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The `devlink -j port show` command output may not contain the "flavour"
key, an example from Ubuntu 22.10 s390x LPAR(5.19.0-37-generic), with
mlx4 driver and iproute2-5.15.0:
{"port":{"pci/0001:00:00.0/1":{"type":"eth","netdev":"ens301"},
"pci/0001:00:00.0/2":{"type":"eth","netdev":"ens301d1"},
"pci/0002:00:00.0/1":{"type":"eth","netdev":"ens317"},
"pci/0002:00:00.0/2":{"type":"eth","netdev":"ens317d1"}}}
This will cause a KeyError exception.
Create a validate_devlink_output() to check for this "flavour" from
devlink command output to avoid this KeyError exception. Also let
it handle the check for `devlink -j dev show` output in main().
Apart from this, if the test was not started because the max lanes of
the designated device is 0. The script will still return 0 and thus
causing a false-negative test result.
Use a found_max_lanes flag to determine if these tests were skipped
due to this reason and return KSFT_SKIP to make it more clear.
Link: https://bugs.launchpad.net/bugs/1937133
Fixes: f3348a82e727 ("selftests: net: Add port split test")
Signed-off-by: Po-Hsu Lin <po-hsu.lin@canonical.com>
Link: https://lore.kernel.org/r/20230315165353.229590-1-po-hsu.lin@canonical.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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netdev->dev_addr is now const, we can't write to it directly.
Copy scrambled mac address octects into an array then eth_hw_addr_set().
Fixes: adeef3e32146 ("net: constify netdev->dev_addr")
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Reviewed-by: Michal Kubiak <michal.kubiak@intel.com>
Link: https://lore.kernel.org/r/20230315134117.79511-1-tsbogend@alpha.franken.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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iucv_irq_data needs to be 4 bytes larger.
These bytes are not used by the iucv module, but written by
the z/VM hypervisor in case a CPU is deconfigured.
Reported as:
BUG dma-kmalloc-64 (Not tainted): kmalloc Redzone overwritten
-----------------------------------------------------------------------------
0x0000000000400564-0x0000000000400567 @offset=1380. First byte 0x80 instead of 0xcc
Allocated in iucv_cpu_prepare+0x44/0xd0 age=167839 cpu=2 pid=1
__kmem_cache_alloc_node+0x166/0x450
kmalloc_node_trace+0x3a/0x70
iucv_cpu_prepare+0x44/0xd0
cpuhp_invoke_callback+0x156/0x2f0
cpuhp_issue_call+0xf0/0x298
__cpuhp_setup_state_cpuslocked+0x136/0x338
__cpuhp_setup_state+0xf4/0x288
iucv_init+0xf4/0x280
do_one_initcall+0x78/0x390
do_initcalls+0x11a/0x140
kernel_init_freeable+0x25e/0x2a0
kernel_init+0x2e/0x170
__ret_from_fork+0x3c/0x58
ret_from_fork+0xa/0x40
Freed in iucv_init+0x92/0x280 age=167839 cpu=2 pid=1
__kmem_cache_free+0x308/0x358
iucv_init+0x92/0x280
do_one_initcall+0x78/0x390
do_initcalls+0x11a/0x140
kernel_init_freeable+0x25e/0x2a0
kernel_init+0x2e/0x170
__ret_from_fork+0x3c/0x58
ret_from_fork+0xa/0x40
Slab 0x0000037200010000 objects=32 used=30 fp=0x0000000000400640 flags=0x1ffff00000010200(slab|head|node=0|zone=0|
Object 0x0000000000400540 @offset=1344 fp=0x0000000000000000
Redzone 0000000000400500: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc ................
Redzone 0000000000400510: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc ................
Redzone 0000000000400520: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc ................
Redzone 0000000000400530: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc ................
Object 0000000000400540: 00 01 00 03 00 00 00 00 00 00 00 00 00 00 00 00 ................
Object 0000000000400550: f3 86 81 f2 f4 82 f8 82 f0 f0 f0 f0 f0 f0 f0 f2 ................
Object 0000000000400560: 00 00 00 00 80 00 00 00 cc cc cc cc cc cc cc cc ................
Object 0000000000400570: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc ................
Redzone 0000000000400580: cc cc cc cc cc cc cc cc ........
Padding 00000000004005d4: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZZZZZ
Padding 00000000004005e4: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZZZZZ
Padding 00000000004005f4: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZ
CPU: 6 PID: 121030 Comm: 116-pai-crypto. Not tainted 6.3.0-20230221.rc0.git4.99b8246b2d71.300.fc37.s390x+debug #1
Hardware name: IBM 3931 A01 704 (z/VM 7.3.0)
Call Trace:
[<000000032aa034ec>] dump_stack_lvl+0xac/0x100
[<0000000329f5a6cc>] check_bytes_and_report+0x104/0x140
[<0000000329f5aa78>] check_object+0x370/0x3c0
[<0000000329f5ede6>] free_debug_processing+0x15e/0x348
[<0000000329f5f06a>] free_to_partial_list+0x9a/0x2f0
[<0000000329f5f4a4>] __slab_free+0x1e4/0x3a8
[<0000000329f61768>] __kmem_cache_free+0x308/0x358
[<000000032a91465c>] iucv_cpu_dead+0x6c/0x88
[<0000000329c2fc66>] cpuhp_invoke_callback+0x156/0x2f0
[<000000032aa062da>] _cpu_down.constprop.0+0x22a/0x5e0
[<0000000329c3243e>] cpu_device_down+0x4e/0x78
[<000000032a61dee0>] device_offline+0xc8/0x118
[<000000032a61e048>] online_store+0x60/0xe0
[<000000032a08b6b0>] kernfs_fop_write_iter+0x150/0x1e8
[<0000000329fab65c>] vfs_write+0x174/0x360
[<0000000329fab9fc>] ksys_write+0x74/0x100
[<000000032aa03a5a>] __do_syscall+0x1da/0x208
[<000000032aa177b2>] system_call+0x82/0xb0
INFO: lockdep is turned off.
FIX dma-kmalloc-64: Restoring kmalloc Redzone 0x0000000000400564-0x0000000000400567=0xcc
FIX dma-kmalloc-64: Object at 0x0000000000400540 not freed
Fixes: 2356f4cb1911 ("[S390]: Rewrite of the IUCV base code, part 2")
Signed-off-by: Alexandra Winter <wintera@linux.ibm.com>
Link: https://lore.kernel.org/r/20230315131435.4113889-1-wintera@linux.ibm.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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The aq_xdp_run_prog() function falls back to the XDP_ABORTED action
handler (using a goto) if the operations for any of the other actions fail.
The XDP_ABORTED handler in turn calls the bpf_warn_invalid_xdp_action()
tracepoint. However, the function also jumps into the XDP_PASS helper if no
XDP program is loaded on the device, which means the XDP_ABORTED handler
can be run with a NULL program pointer. This results in a NULL pointer
deref because the tracepoint dereferences the 'prog' pointer passed to it.
This situation can happen in multiple ways:
- If a packet arrives between the removal of the program from the interface
and the static_branch_dec() in aq_xdp_setup()
- If there are multiple devices using the same driver in the system and
one of them has an XDP program loaded and the other does not.
Fix this by refactoring the aq_xdp_run_prog() function to remove the 'goto
pass' handling if there is no XDP program loaded. Instead, factor out the
skb building in a separate small helper function.
Fixes: 26efaef759a1 ("net: atlantic: Implement xdp data plane")
Reported-by: Freysteinn Alfredsson <Freysteinn.Alfredsson@kau.se>
Tested-by: Freysteinn Alfredsson <Freysteinn.Alfredsson@kau.se>
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Link: https://lore.kernel.org/r/20230315125539.103319-1-toke@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Packet length check needs to be located after size and align_count
calculation to prevent kernel panic in skb_pull() in case
rx_cmd_a & RX_CMD_A_RED evaluates to true.
Fixes: d8b228318935 ("net: usb: smsc75xx: Limit packet length to skb->len")
Signed-off-by: Szymon Heidrich <szymon.heidrich@gmail.com>
Link: https://lore.kernel.org/r/20230316110540.77531-1-szymon.heidrich@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Commit f96a3d74554d ("ipv4: Fix incorrect route flushing when source
address is deleted") started to take the table ID field in the FIB info
structure into account when determining if two structures are identical
or not. This field is initialized using the 'fc_table' field in the
route configuration structure, which is not set when adding a route via
IOCTL.
The above can result in user space being able to install two identical
routes that only differ in the table ID field of their associated FIB
info.
Fix by initializing the table ID field in the route configuration
structure in the IOCTL path.
Before the fix:
# ip route add default via 192.0.2.2
# route add default gw 192.0.2.2
# ip -4 r show default
# default via 192.0.2.2 dev dummy10
# default via 192.0.2.2 dev dummy10
After the fix:
# ip route add default via 192.0.2.2
# route add default gw 192.0.2.2
SIOCADDRT: File exists
# ip -4 r show default
default via 192.0.2.2 dev dummy10
Audited the code paths to ensure there are no other paths that do not
properly initialize the route configuration structure when installing a
route.
Fixes: 5a56a0b3a45d ("net: Don't delete routes in different VRFs")
Fixes: f96a3d74554d ("ipv4: Fix incorrect route flushing when source address is deleted")
Reported-by: gaoxingwang <gaoxingwang1@huawei.com>
Link: https://lore.kernel.org/netdev/20230314144159.2354729-1-gaoxingwang1@huawei.com/
Tested-by: gaoxingwang <gaoxingwang1@huawei.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/r/20230315124009.4015212-1-idosch@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec
Steffen Klassert says:
====================
pull request (net): ipsec 2023-03-15
1) Fix an information leak when dumping algos and encap.
From Herbert Xu
2) Allow transport-mode states with AF_UNSPEC selector
to allow for nested transport-mode states.
From Herbert Xu.
* tag 'ipsec-2023-03-15' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec:
xfrm: Allow transport-mode states with AF_UNSPEC selector
xfrm: Zero padding when dumping algos and encap
====================
Link: https://lore.kernel.org/r/20230315105623.1396491-1-steffen.klassert@secunet.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Wolfram Sang says:
====================
net: renesas: set 'mac_managed_pm' at probe time
When suspending/resuming an interface which was not up, we saw mdiobus
related PM handling despite 'mac_managed_pm' being set for RAVB/SH_ETH.
Heiner kindly suggested the fix to set this flag at probe time, not at
init/open time. I implemented his suggestion and it works fine on these
two Renesas drivers.
====================
Link: https://lore.kernel.org/r/20230315074115.3008-1-wsa+renesas@sang-engineering.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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SH_ETH doesn't need mdiobus suspend/resume, that's why it sets
'mac_managed_pm'. However, setting it needs to be moved from init to
probe, so mdiobus PM functions will really never be called (e.g. when
the interface is not up yet during suspend/resume).
Fixes: 6a1dbfefdae4 ("net: sh_eth: Fix PHY state warning splat during system resume")
Suggested-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Michal Kubiak <michal.kubiak@intel.com>
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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RAVB doesn't need mdiobus suspend/resume, that's why it sets
'mac_managed_pm'. However, setting it needs to be moved from init to
probe, so mdiobus PM functions will really never be called (e.g. when
the interface is not up yet during suspend/resume).
Fixes: 4924c0cdce75 ("net: ravb: Fix PHY state warning splat during system resume")
Suggested-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Michal Kubiak <michal.kubiak@intel.com>
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Xuan Zhuo says:
====================
virtio_net: fix two bugs related to XDP
This patch set fixes two bugs related to XDP.
These two patch is not associated.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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build_skb_from_xdp_buff() may return NULL, in this case
we need to free the frags of xdp shinfo.
Fixes: fab89bafa95b ("virtio-net: support multi-buffer xdp")
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Because headroom is not passed to page_to_skb(), this causes the shinfo
exceeds the range. Then the frags of shinfo are changed by other process.
[ 157.724634] stack segment: 0000 [#1] PREEMPT SMP NOPTI
[ 157.725358] CPU: 3 PID: 679 Comm: xdp_pass_user_f Tainted: G E 6.2.0+ #150
[ 157.726401] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/4
[ 157.727820] RIP: 0010:skb_release_data+0x11b/0x180
[ 157.728449] Code: 44 24 02 48 83 c3 01 39 d8 7e be 48 89 d8 48 c1 e0 04 41 80 7d 7e 00 49 8b 6c 04 30 79 0c 48 89 ef e8 89 b
[ 157.730751] RSP: 0018:ffffc90000178b48 EFLAGS: 00010202
[ 157.731383] RAX: 0000000000000010 RBX: 0000000000000001 RCX: 0000000000000000
[ 157.732270] RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffff888100dd0b00
[ 157.733117] RBP: 5d5d76010f6e2408 R08: ffff888100dd0b2c R09: 0000000000000000
[ 157.734013] R10: ffffffff82effd30 R11: 000000000000a14e R12: ffff88810981ffc0
[ 157.734904] R13: ffff888100dd0b00 R14: 0000000000000002 R15: 0000000000002310
[ 157.735793] FS: 00007f06121d9740(0000) GS:ffff88842fcc0000(0000) knlGS:0000000000000000
[ 157.736794] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 157.737522] CR2: 00007ffd9a56c084 CR3: 0000000104bda001 CR4: 0000000000770ee0
[ 157.738420] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 157.739283] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 157.740146] PKRU: 55555554
[ 157.740502] Call Trace:
[ 157.740843] <IRQ>
[ 157.741117] kfree_skb_reason+0x50/0x120
[ 157.741613] __udp4_lib_rcv+0x52b/0x5e0
[ 157.742132] ip_protocol_deliver_rcu+0xaf/0x190
[ 157.742715] ip_local_deliver_finish+0x77/0xa0
[ 157.743280] ip_sublist_rcv_finish+0x80/0x90
[ 157.743834] ip_list_rcv_finish.constprop.0+0x16f/0x190
[ 157.744493] ip_list_rcv+0x126/0x140
[ 157.744952] __netif_receive_skb_list_core+0x29b/0x2c0
[ 157.745602] __netif_receive_skb_list+0xed/0x160
[ 157.746190] ? udp4_gro_receive+0x275/0x350
[ 157.746732] netif_receive_skb_list_internal+0xf2/0x1b0
[ 157.747398] napi_gro_receive+0xd1/0x210
[ 157.747911] virtnet_receive+0x75/0x1c0
[ 157.748422] virtnet_poll+0x48/0x1b0
[ 157.748878] __napi_poll+0x29/0x1b0
[ 157.749330] net_rx_action+0x27a/0x340
[ 157.749812] __do_softirq+0xf3/0x2fb
[ 157.750298] do_softirq+0xa2/0xd0
[ 157.750745] </IRQ>
[ 157.751563] <TASK>
[ 157.752329] __local_bh_enable_ip+0x6d/0x80
[ 157.753178] virtnet_xdp_set+0x482/0x860
[ 157.754159] ? __pfx_virtnet_xdp+0x10/0x10
[ 157.755129] dev_xdp_install+0xa4/0xe0
[ 157.756033] dev_xdp_attach+0x20b/0x5e0
[ 157.756933] do_setlink+0x82e/0xc90
[ 157.757777] ? __nla_validate_parse+0x12b/0x1e0
[ 157.758744] rtnl_setlink+0xd8/0x170
[ 157.759549] ? mod_objcg_state+0xcb/0x320
[ 157.760328] ? security_capable+0x37/0x60
[ 157.761209] ? security_capable+0x37/0x60
[ 157.762072] rtnetlink_rcv_msg+0x145/0x3d0
[ 157.762929] ? ___slab_alloc+0x327/0x610
[ 157.763754] ? __alloc_skb+0x141/0x170
[ 157.764533] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 157.765422] netlink_rcv_skb+0x58/0x110
[ 157.766229] netlink_unicast+0x21f/0x330
[ 157.766951] netlink_sendmsg+0x240/0x4a0
[ 157.767654] sock_sendmsg+0x93/0xa0
[ 157.768434] ? sockfd_lookup_light+0x12/0x70
[ 157.769245] __sys_sendto+0xfe/0x170
[ 157.770079] ? handle_mm_fault+0xe9/0x2d0
[ 157.770859] ? preempt_count_add+0x51/0xa0
[ 157.771645] ? up_read+0x3c/0x80
[ 157.772340] ? do_user_addr_fault+0x1e9/0x710
[ 157.773166] ? kvm_read_and_reset_apf_flags+0x49/0x60
[ 157.774087] __x64_sys_sendto+0x29/0x30
[ 157.774856] do_syscall_64+0x3c/0x90
[ 157.775518] entry_SYSCALL_64_after_hwframe+0x72/0xdc
[ 157.776382] RIP: 0033:0x7f06122def70
Fixes: 18117a842ab0 ("virtio-net: remove xdp related info from page_to_skb()")
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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It is preferred to use typed property access functions (i.e.
of_property_read_<type> functions) rather than low-level
of_get_property/of_find_property functions for reading properties.
Convert reading boolean properties to of_property_read_bool().
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de> # for net/can
Acked-by: Kalle Valo <kvalo@kernel.org>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Acked-by: Francois Romieu <romieu@fr.zoreil.com>
Reviewed-by: Wei Fang <wei.fang@nxp.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Vladimir Oltean says:
====================
Fix MTU reporting for Marvell DSA switches where we can't change it
As explained in patch 2, the driver doesn't know how to change the MTU
on MV88E6165, MV88E6191, MV88E6220, MV88E6250 and MV88E6290, and there
is a regression where it actually reports an MTU value below the
Ethernet standard (1500).
Fixing that shows another issue where DSA is unprepared to be told that
a switch supports an MTU of only 1500, and still errors out. That is
addressed by patch 1.
Testing was not done on "real" hardware, but on a different Marvell DSA
switch, with code modified such that the driver doesn't know how to
change the MTU on that, either.
A key assumption is that these switches don't need any MTU configuration
to pass full MTU-sized, DSA-tagged packets, which seems like a
reasonable assumption to make. My 6390 and 6190 switches, with
.port_set_jumbo_size commented out, certainly don't seem to have any
problem passing MTU-sized traffic, as can be seen in this iperf3 session
captured with tcpdump on the DSA master:
$MAC > $MAC, Marvell DSA mode Forward, dev 2, port 8, untagged, VID 1000,
FPri 0, ethertype IPv4 (0x0800), length 1518:
10.0.0.69.49590 > 10.0.0.1.5201: Flags [.], seq 81088:82536,
ack 1, win 502, options [nop,nop,TS val 2221498829 ecr 3012859850],
length 1448
I don't want to go all the way and say that the adjustment made by
commit b9c587fed61c ("dsa: mv88e6xxx: Include tagger overhead when
setting MTU for DSA and CPU ports") is completely unnecessary, just that
there's an equally good chance that the switches with unknown MTU
configuration procedure "just work".
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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There are 3 classes of switch families that the driver is aware of, as
far as mv88e6xxx_change_mtu() is concerned:
- MTU configuration is available per port. Here, the
chip->info->ops->port_set_jumbo_size() method will be present.
- MTU configuration is global to the switch. Here, the
chip->info->ops->set_max_frame_size() method will be present.
- We don't know how to change the MTU. Here, none of the above methods
will be present.
Switch families MV88E6165, MV88E6191, MV88E6220, MV88E6250 and MV88E6290
fall in category 3.
The blamed commit has adjusted the MTU for all 3 categories by EDSA_HLEN
(8 bytes), resulting in a new maximum MTU of 1492 being reported by the
driver for these switches.
I don't have the hardware to test, but I do have a MV88E6390 switch on
which I can simulate this by commenting out its .port_set_jumbo_size
definition from mv88e6390_ops. The result is this set of messages at
probe time:
mv88e6085 d0032004.mdio-mii:10: nonfatal error -34 setting MTU to 1500 on port 1
mv88e6085 d0032004.mdio-mii:10: nonfatal error -34 setting MTU to 1500 on port 2
mv88e6085 d0032004.mdio-mii:10: nonfatal error -34 setting MTU to 1500 on port 3
mv88e6085 d0032004.mdio-mii:10: nonfatal error -34 setting MTU to 1500 on port 4
mv88e6085 d0032004.mdio-mii:10: nonfatal error -34 setting MTU to 1500 on port 5
mv88e6085 d0032004.mdio-mii:10: nonfatal error -34 setting MTU to 1500 on port 6
mv88e6085 d0032004.mdio-mii:10: nonfatal error -34 setting MTU to 1500 on port 7
mv88e6085 d0032004.mdio-mii:10: nonfatal error -34 setting MTU to 1500 on port 8
It is highly implausible that there exist Ethernet switches which don't
support the standard MTU of 1500 octets, and this is what the DSA
framework says as well - the error comes from dsa_slave_create() ->
dsa_slave_change_mtu(slave_dev, ETH_DATA_LEN).
But the error messages are alarming, and it would be good to suppress
them.
As a consequence of this unlikeliness, we reimplement mv88e6xxx_get_max_mtu()
and mv88e6xxx_change_mtu() on switches from the 3rd category as follows:
the maximum supported MTU is 1500, and any request to set the MTU to a
value larger than that fails in dev_validate_mtu().
Fixes: b9c587fed61c ("dsa: mv88e6xxx: Include tagger overhead when setting MTU for DSA and CPU ports")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Currently, when dsa_slave_change_mtu() is called on a user port where
dev->max_mtu is 1500 (as returned by ds->ops->port_max_mtu()), the code
will stumble upon this check:
if (new_master_mtu > mtu_limit)
return -ERANGE;
because new_master_mtu is adjusted for the tagger overhead but mtu_limit
is not.
But it would be good if the logic went through, for example if the DSA
master really depends on an MTU adjustment to accept DSA-tagged frames.
To make the code pass through the check, we need to adjust mtu_limit for
the overhead as well, if the minimum restriction was caused by the DSA
user port's MTU (dev->max_mtu). A DSA user port MTU and a DSA master MTU
are always offset by the protocol overhead.
Currently no drivers return 1500 .port_max_mtu(), but this is only
temporary and a bug in itself - mv88e6xxx should have done that, but
since commit b9c587fed61c ("dsa: mv88e6xxx: Include tagger overhead when
setting MTU for DSA and CPU ports") it no longer does. This is a
preparation for fixing that.
Fixes: bfcb813203e6 ("net: dsa: configure the MTU for switch ports")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
ice_qp_dis() intends to stop a given queue pair that is a target of xsk
pool attach/detach. One of the steps is to disable interrupts on these
queues. It currently is broken in a way that txq irq is turned off
*after* HW flush which in turn takes no effect.
ice_qp_dis():
-> ice_qvec_dis_irq()
--> disable rxq irq
--> flush hw
-> ice_vsi_stop_tx_ring()
-->disable txq irq
Below splat can be triggered by following steps:
- start xdpsock WITHOUT loading xdp prog
- run xdp_rxq_info with XDP_TX action on this interface
- start traffic
- terminate xdpsock
[ 256.312485] BUG: kernel NULL pointer dereference, address: 0000000000000018
[ 256.319560] #PF: supervisor read access in kernel mode
[ 256.324775] #PF: error_code(0x0000) - not-present page
[ 256.329994] PGD 0 P4D 0
[ 256.332574] Oops: 0000 [#1] PREEMPT SMP NOPTI
[ 256.337006] CPU: 3 PID: 32 Comm: ksoftirqd/3 Tainted: G OE 6.2.0-rc5+ #51
[ 256.345218] Hardware name: Intel Corporation S2600WFT/S2600WFT, BIOS SE5C620.86B.02.01.0008.031920191559 03/19/2019
[ 256.355807] RIP: 0010:ice_clean_rx_irq_zc+0x9c/0x7d0 [ice]
[ 256.361423] Code: b7 8f 8a 00 00 00 66 39 ca 0f 84 f1 04 00 00 49 8b 47 40 4c 8b 24 d0 41 0f b7 45 04 66 25 ff 3f 66 89 04 24 0f 84 85 02 00 00 <49> 8b 44 24 18 0f b7 14 24 48 05 00 01 00 00 49 89 04 24 49 89 44
[ 256.380463] RSP: 0018:ffffc900088bfd20 EFLAGS: 00010206
[ 256.385765] RAX: 000000000000003c RBX: 0000000000000035 RCX: 000000000000067f
[ 256.393012] RDX: 0000000000000775 RSI: 0000000000000000 RDI: ffff8881deb3ac80
[ 256.400256] RBP: 000000000000003c R08: ffff889847982710 R09: 0000000000010000
[ 256.407500] R10: ffffffff82c060c0 R11: 0000000000000004 R12: 0000000000000000
[ 256.414746] R13: ffff88811165eea0 R14: ffffc9000d255000 R15: ffff888119b37600
[ 256.421990] FS: 0000000000000000(0000) GS:ffff8897e0cc0000(0000) knlGS:0000000000000000
[ 256.430207] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 256.436036] CR2: 0000000000000018 CR3: 0000000005c0a006 CR4: 00000000007706e0
[ 256.443283] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 256.450527] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 256.457770] PKRU: 55555554
[ 256.460529] Call Trace:
[ 256.463015] <TASK>
[ 256.465157] ? ice_xmit_zc+0x6e/0x150 [ice]
[ 256.469437] ice_napi_poll+0x46d/0x680 [ice]
[ 256.473815] ? _raw_spin_unlock_irqrestore+0x1b/0x40
[ 256.478863] __napi_poll+0x29/0x160
[ 256.482409] net_rx_action+0x136/0x260
[ 256.486222] __do_softirq+0xe8/0x2e5
[ 256.489853] ? smpboot_thread_fn+0x2c/0x270
[ 256.494108] run_ksoftirqd+0x2a/0x50
[ 256.497747] smpboot_thread_fn+0x1c1/0x270
[ 256.501907] ? __pfx_smpboot_thread_fn+0x10/0x10
[ 256.506594] kthread+0xea/0x120
[ 256.509785] ? __pfx_kthread+0x10/0x10
[ 256.513597] ret_from_fork+0x29/0x50
[ 256.517238] </TASK>
In fact, irqs were not disabled and napi managed to be scheduled and run
while xsk_pool pointer was still valid, but SW ring of xdp_buff pointers
was already freed.
To fix this, call ice_qvec_dis_irq() after ice_vsi_stop_tx_ring(). Also
while at it, remove redundant ice_clean_rx_ring() call - this is handled
in ice_qp_clean_rings().
Fixes: 2d4238f55697 ("ice: Add support for AF_XDP")
Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Reviewed-by: Larysa Zaremba <larysa.zaremba@intel.com>
Tested-by: Chandan Kumar Rout <chandanx.rout@intel.com> (A Contingent Worker at Intel)
Acked-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
|
|
This adds SOCK_STREAM and SOCK_SEQPACKET tests for invalid buffer case.
It tries to read data to NULL buffer (data already presents in socket's
queue), then uses valid buffer. For SOCK_STREAM second read must return
data, because skbuff is not dropped, but for SOCK_SEQPACKET skbuff will
be dropped by kernel, and 'recv()' will return EAGAIN.
Signed-off-by: Arseniy Krasnov <AVKrasnov@sberdevices.ru>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
This returns behaviour of SOCK_STREAM read as before skbuff usage. When
copying to user fails current skbuff won't be dropped, but returned to
sockets's queue. Technically instead of 'skb_dequeue()', 'skb_peek()' is
called and when skbuff becomes empty, it is removed from queue by
'__skb_unlink()'.
Fixes: 71dc9ec9ac7d ("virtio/vsock: replace virtio_vsock_pkt with sk_buff")
Signed-off-by: Arseniy Krasnov <AVKrasnov@sberdevices.ru>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Acked-by: Bobby Eshleman <bobby.eshleman@bytedance.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Since we now no longer use 'skb->len' to update credit, there is no sense
to update skbuff state, because it is used only once after dequeue to
copy data and then will be released.
Fixes: 71dc9ec9ac7d ("virtio/vsock: replace virtio_vsock_pkt with sk_buff")
Signed-off-by: Arseniy Krasnov <AVKrasnov@sberdevices.ru>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Acked-by: Bobby Eshleman <bobby.eshleman@bytedance.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
'skb->len' can vary when we partially read the data, this complicates the
calculation of credit to be updated in 'virtio_transport_inc_rx_pkt()/
virtio_transport_dec_rx_pkt()'.
Also in 'virtio_transport_dec_rx_pkt()' we were miscalculating the
credit since 'skb->len' was redundant.
For these reasons, let's replace the use of skbuff state to calculate new
'rx_bytes'/'fwd_cnt' values with explicit value as input argument. This
makes code more simple, because it is not needed to change skbuff state
before each call to update 'rx_bytes'/'fwd_cnt'.
Fixes: 71dc9ec9ac7d ("virtio/vsock: replace virtio_vsock_pkt with sk_buff")
Signed-off-by: Arseniy Krasnov <AVKrasnov@sberdevices.ru>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Acked-by: Bobby Eshleman <bobby.eshleman@bytedance.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Since the blamed commit, phy_ethtool_get_wol() and phy_ethtool_set_wol()
acquire phydev->lock, but the mscc phy driver implementations,
vsc85xx_wol_get() and vsc85xx_wol_set(), acquire the same lock as well,
resulting in a deadlock.
$ ip link set swp3 down
============================================
WARNING: possible recursive locking detected
mscc_felix 0000:00:00.5 swp3: Link is Down
--------------------------------------------
ip/375 is trying to acquire lock:
ffff3d7e82e987a8 (&dev->lock){+.+.}-{4:4}, at: vsc85xx_wol_get+0x2c/0xf4
but task is already holding lock:
ffff3d7e82e987a8 (&dev->lock){+.+.}-{4:4}, at: phy_ethtool_get_wol+0x3c/0x6c
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0
----
lock(&dev->lock);
lock(&dev->lock);
*** DEADLOCK ***
May be due to missing lock nesting notation
2 locks held by ip/375:
#0: ffffd43b2a955788 (rtnl_mutex){+.+.}-{4:4}, at: rtnetlink_rcv_msg+0x144/0x58c
#1: ffff3d7e82e987a8 (&dev->lock){+.+.}-{4:4}, at: phy_ethtool_get_wol+0x3c/0x6c
Call trace:
__mutex_lock+0x98/0x454
mutex_lock_nested+0x2c/0x38
vsc85xx_wol_get+0x2c/0xf4
phy_ethtool_get_wol+0x50/0x6c
phy_suspend+0x84/0xcc
phy_state_machine+0x1b8/0x27c
phy_stop+0x70/0x154
phylink_stop+0x34/0xc0
dsa_port_disable_rt+0x2c/0xa4
dsa_slave_close+0x38/0xec
__dev_close_many+0xc8/0x16c
__dev_change_flags+0xdc/0x218
dev_change_flags+0x24/0x6c
do_setlink+0x234/0xea4
__rtnl_newlink+0x46c/0x878
rtnl_newlink+0x50/0x7c
rtnetlink_rcv_msg+0x16c/0x58c
Removing the mutex_lock(&phydev->lock) calls from the driver restores
the functionality.
Fixes: 2f987d486610 ("net: phy: Add locks to ethtool functions")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20230314153025.2372970-1-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
|
Commit 718a18a0c8a6 ("veth: Rework veth_xdp_rcv_skb in order
to accept non-linear skb") introduced a bug where it tried to
use pskb_expand_head() if the headroom was less than
XDP_PACKET_HEADROOM. This however uses kmalloc to expand the head,
which will later allow consume_skb() to free the skb while is it still
in use by AF_XDP.
Previously if the headroom was less than XDP_PACKET_HEADROOM we
continued on to allocate a new skb from pages so this restores that
behavior.
BUG: KASAN: use-after-free in __xsk_rcv+0x18d/0x2c0
Read of size 78 at addr ffff888976250154 by task napi/iconduit-g/148640
CPU: 5 PID: 148640 Comm: napi/iconduit-g Kdump: loaded Tainted: G O 6.1.4-cloudflare-kasan-2023.1.2 #1
Hardware name: Quanta Computer Inc. QuantaPlex T41S-2U/S2S-MB, BIOS S2S_3B10.03 06/21/2018
Call Trace:
<TASK>
dump_stack_lvl+0x34/0x48
print_report+0x170/0x473
? __xsk_rcv+0x18d/0x2c0
kasan_report+0xad/0x130
? __xsk_rcv+0x18d/0x2c0
kasan_check_range+0x149/0x1a0
memcpy+0x20/0x60
__xsk_rcv+0x18d/0x2c0
__xsk_map_redirect+0x1f3/0x490
? veth_xdp_rcv_skb+0x89c/0x1ba0 [veth]
xdp_do_redirect+0x5ca/0xd60
veth_xdp_rcv_skb+0x935/0x1ba0 [veth]
? __netif_receive_skb_list_core+0x671/0x920
? veth_xdp+0x670/0x670 [veth]
veth_xdp_rcv+0x304/0xa20 [veth]
? do_xdp_generic+0x150/0x150
? veth_xdp_rcv_one+0xde0/0xde0 [veth]
? _raw_spin_lock_bh+0xe0/0xe0
? newidle_balance+0x887/0xe30
? __perf_event_task_sched_in+0xdb/0x800
veth_poll+0x139/0x571 [veth]
? veth_xdp_rcv+0xa20/0xa20 [veth]
? _raw_spin_unlock+0x39/0x70
? finish_task_switch.isra.0+0x17e/0x7d0
? __switch_to+0x5cf/0x1070
? __schedule+0x95b/0x2640
? io_schedule_timeout+0x160/0x160
__napi_poll+0xa1/0x440
napi_threaded_poll+0x3d1/0x460
? __napi_poll+0x440/0x440
? __kthread_parkme+0xc6/0x1f0
? __napi_poll+0x440/0x440
kthread+0x2a2/0x340
? kthread_complete_and_exit+0x20/0x20
ret_from_fork+0x22/0x30
</TASK>
Freed by task 148640:
kasan_save_stack+0x23/0x50
kasan_set_track+0x21/0x30
kasan_save_free_info+0x2a/0x40
____kasan_slab_free+0x169/0x1d0
slab_free_freelist_hook+0xd2/0x190
__kmem_cache_free+0x1a1/0x2f0
skb_release_data+0x449/0x600
consume_skb+0x9f/0x1c0
veth_xdp_rcv_skb+0x89c/0x1ba0 [veth]
veth_xdp_rcv+0x304/0xa20 [veth]
veth_poll+0x139/0x571 [veth]
__napi_poll+0xa1/0x440
napi_threaded_poll+0x3d1/0x460
kthread+0x2a2/0x340
ret_from_fork+0x22/0x30
The buggy address belongs to the object at ffff888976250000
which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 340 bytes inside of
2048-byte region [ffff888976250000, ffff888976250800)
The buggy address belongs to the physical page:
page:00000000ae18262a refcount:2 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x976250
head:00000000ae18262a order:3 compound_mapcount:0 compound_pincount:0
flags: 0x2ffff800010200(slab|head|node=0|zone=2|lastcpupid=0x1ffff)
raw: 002ffff800010200 0000000000000000 dead000000000122 ffff88810004cf00
raw: 0000000000000000 0000000080080008 00000002ffffffff 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff888976250000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888976250080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
> ffff888976250100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888976250180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888976250200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
Fixes: 718a18a0c8a6 ("veth: Rework veth_xdp_rcv_skb in order to accept non-linear skb")
Signed-off-by: Shawn Bohrer <sbohrer@cloudflare.com>
Acked-by: Lorenzo Bianconi <lorenzo@kernel.org>
Acked-by: Toshiaki Makita <toshiaki.makita1@gmail.com>
Acked-by: Toke Høiland-Jørgensen <toke@kernel.org>
Link: https://lore.kernel.org/r/20230314153351.2201328-1-sbohrer@cloudflare.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
|
Daniel Golle says:
====================
net: ethernet: mtk_eth_soc: minor SGMII fixes
This small series brings two minor fixes for the SGMII unit found in
MediaTek's router SoCs.
The first patch resets the PCS internal state machine on major
configuration changes, just like it is also done in MediaTek's SDK.
The second patch makes sure we only write values and restart AN if
actually needed, thus preventing unnesseray loss of an existing link
in some cases.
Both patches have previously been submitted as part of the series
"net: ethernet: mtk_eth_soc: various enhancements" which grew a bit
too big and it has correctly been criticized that some of the patches
should rather go as fixes to net-next.
This new series tries to address this.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Only restart auto-negotiation and write link timer if actually
necessary. This prevents losing the link in case of minor
changes.
Fixes: 7e538372694b ("net: ethernet: mediatek: Re-add support SGMII")
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Tested-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Reset the internal PCS state machine when changing interface mode.
This prevents confusing the state machine when changing interface
modes, e.g. from SGMII to 2500Base-X or vice-versa.
Fixes: 7e538372694b ("net: ethernet: mediatek: Re-add support SGMII")
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Tested-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Packet length retrieved from skb data may be larger than
the actual socket buffer length (up to 9026 bytes). In such
case the cloned skb passed up the network stack will leak
kernel memory contents.
Fixes: d0cad871703b ("smsc75xx: SMSC LAN75xx USB gigabit ethernet adapter driver")
Signed-off-by: Szymon Heidrich <szymon.heidrich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Wenjia Zhang says:
====================
net/smc: Fixes 2023-03-01
The 1st patch solves the problem that CLC message initialization was
not properly reversed in error handling path. And the 2nd one fixes
the possible deadlock triggered by cancel_delayed_work_sync().
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
CLC message initialization was not properly reversed in error handling path.
Reported-and-suggested-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Stefan Raspl <raspl@linux.ibm.com>
Signed-off-by: Wenjia Zhang <wenjia@linux.ibm.com>
Reviewed-by: Tony Lu <tonylu@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
The following LOCKDEP was detected:
Workqueue: events smc_lgr_free_work [smc]
WARNING: possible circular locking dependency detected
6.1.0-20221027.rc2.git8.56bc5b569087.300.fc36.s390x+debug #1 Not tainted
------------------------------------------------------
kworker/3:0/176251 is trying to acquire lock:
00000000f1467148 ((wq_completion)smc_tx_wq-00000000#2){+.+.}-{0:0},
at: __flush_workqueue+0x7a/0x4f0
but task is already holding lock:
0000037fffe97dc8 ((work_completion)(&(&lgr->free_work)->work)){+.+.}-{0:0},
at: process_one_work+0x232/0x730
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #4 ((work_completion)(&(&lgr->free_work)->work)){+.+.}-{0:0}:
__lock_acquire+0x58e/0xbd8
lock_acquire.part.0+0xe2/0x248
lock_acquire+0xac/0x1c8
__flush_work+0x76/0xf0
__cancel_work_timer+0x170/0x220
__smc_lgr_terminate.part.0+0x34/0x1c0 [smc]
smc_connect_rdma+0x15e/0x418 [smc]
__smc_connect+0x234/0x480 [smc]
smc_connect+0x1d6/0x230 [smc]
__sys_connect+0x90/0xc0
__do_sys_socketcall+0x186/0x370
__do_syscall+0x1da/0x208
system_call+0x82/0xb0
-> #3 (smc_client_lgr_pending){+.+.}-{3:3}:
__lock_acquire+0x58e/0xbd8
lock_acquire.part.0+0xe2/0x248
lock_acquire+0xac/0x1c8
__mutex_lock+0x96/0x8e8
mutex_lock_nested+0x32/0x40
smc_connect_rdma+0xa4/0x418 [smc]
__smc_connect+0x234/0x480 [smc]
smc_connect+0x1d6/0x230 [smc]
__sys_connect+0x90/0xc0
__do_sys_socketcall+0x186/0x370
__do_syscall+0x1da/0x208
system_call+0x82/0xb0
-> #2 (sk_lock-AF_SMC){+.+.}-{0:0}:
__lock_acquire+0x58e/0xbd8
lock_acquire.part.0+0xe2/0x248
lock_acquire+0xac/0x1c8
lock_sock_nested+0x46/0xa8
smc_tx_work+0x34/0x50 [smc]
process_one_work+0x30c/0x730
worker_thread+0x62/0x420
kthread+0x138/0x150
__ret_from_fork+0x3c/0x58
ret_from_fork+0xa/0x40
-> #1 ((work_completion)(&(&smc->conn.tx_work)->work)){+.+.}-{0:0}:
__lock_acquire+0x58e/0xbd8
lock_acquire.part.0+0xe2/0x248
lock_acquire+0xac/0x1c8
process_one_work+0x2bc/0x730
worker_thread+0x62/0x420
kthread+0x138/0x150
__ret_from_fork+0x3c/0x58
ret_from_fork+0xa/0x40
-> #0 ((wq_completion)smc_tx_wq-00000000#2){+.+.}-{0:0}:
check_prev_add+0xd8/0xe88
validate_chain+0x70c/0xb20
__lock_acquire+0x58e/0xbd8
lock_acquire.part.0+0xe2/0x248
lock_acquire+0xac/0x1c8
__flush_workqueue+0xaa/0x4f0
drain_workqueue+0xaa/0x158
destroy_workqueue+0x44/0x2d8
smc_lgr_free+0x9e/0xf8 [smc]
process_one_work+0x30c/0x730
worker_thread+0x62/0x420
kthread+0x138/0x150
__ret_from_fork+0x3c/0x58
ret_from_fork+0xa/0x40
other info that might help us debug this:
Chain exists of:
(wq_completion)smc_tx_wq-00000000#2
--> smc_client_lgr_pending
--> (work_completion)(&(&lgr->free_work)->work)
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock((work_completion)(&(&lgr->free_work)->work));
lock(smc_client_lgr_pending);
lock((work_completion)
(&(&lgr->free_work)->work));
lock((wq_completion)smc_tx_wq-00000000#2);
*** DEADLOCK ***
2 locks held by kworker/3:0/176251:
#0: 0000000080183548
((wq_completion)events){+.+.}-{0:0},
at: process_one_work+0x232/0x730
#1: 0000037fffe97dc8
((work_completion)
(&(&lgr->free_work)->work)){+.+.}-{0:0},
at: process_one_work+0x232/0x730
stack backtrace:
CPU: 3 PID: 176251 Comm: kworker/3:0 Not tainted
Hardware name: IBM 8561 T01 701 (z/VM 7.2.0)
Call Trace:
[<000000002983c3e4>] dump_stack_lvl+0xac/0x100
[<0000000028b477ae>] check_noncircular+0x13e/0x160
[<0000000028b48808>] check_prev_add+0xd8/0xe88
[<0000000028b49cc4>] validate_chain+0x70c/0xb20
[<0000000028b4bd26>] __lock_acquire+0x58e/0xbd8
[<0000000028b4cf6a>] lock_acquire.part.0+0xe2/0x248
[<0000000028b4d17c>] lock_acquire+0xac/0x1c8
[<0000000028addaaa>] __flush_workqueue+0xaa/0x4f0
[<0000000028addf9a>] drain_workqueue+0xaa/0x158
[<0000000028ae303c>] destroy_workqueue+0x44/0x2d8
[<000003ff8029af26>] smc_lgr_free+0x9e/0xf8 [smc]
[<0000000028adf3d4>] process_one_work+0x30c/0x730
[<0000000028adf85a>] worker_thread+0x62/0x420
[<0000000028aeac50>] kthread+0x138/0x150
[<0000000028a63914>] __ret_from_fork+0x3c/0x58
[<00000000298503da>] ret_from_fork+0xa/0x40
INFO: lockdep is turned off.
===================================================================
This deadlock occurs because cancel_delayed_work_sync() waits for
the work(&lgr->free_work) to finish, while the &lgr->free_work
waits for the work(lgr->tx_wq), which needs the sk_lock-AF_SMC, that
is already used under the mutex_lock.
The solution is to use cancel_delayed_work() instead, which kills
off a pending work.
Fixes: a52bcc919b14 ("net/smc: improve termination processing")
Signed-off-by: Wenjia Zhang <wenjia@linux.ibm.com>
Reviewed-by: Jan Karcher <jaka@linux.ibm.com>
Reviewed-by: Karsten Graul <kgraul@linux.ibm.com>
Reviewed-by: Tony Lu <tonylu@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Spectrum ASICs have a configurable limit on how deep into the packet
they parse. By default, the limit is 96 bytes.
There are several cases where this parsing depth is not enough and there
is a need to increase it. For example, timestamping of PTP packets and a
FIB multipath hash policy that requires hashing on inner fields. The
driver therefore maintains a reference count that reflects the number of
consumers that require an increased parsing depth.
During reload_down() the parsing depth reference count does not
necessarily drop to zero, but the parsing depth itself is restored to
the default during reload_up() when the firmware is reset. It is
therefore possible to end up in situations where the driver thinks that
the parsing depth was increased (reference count is non-zero), when it
is not.
Fix by making sure that all the consumers that increase the parsing
depth reference count also decrease it during reload_down().
Specifically, make sure that when the routing code is de-initialized it
drops the reference count if it was increased because of a FIB multipath
hash policy that requires hashing on inner fields.
Add a warning if the reference count is not zero after the driver was
de-initialized and explicitly reset it to zero during initialization for
good measures.
Fixes: 2d91f0803b84 ("mlxsw: spectrum: Add infrastructure for parsing configuration")
Reported-by: Maksym Yaremchuk <maksymy@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Petr Machata <petrm@nvidia.com>
Link: https://lore.kernel.org/r/9c35e1b3e6c1d8f319a2449d14e2b86373f3b3ba.1678727526.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
|
veth_set_xdp_features()
Fix the following kernel warning in veth_set_xdp_features routine
relying on rtnl_dereference() instead of on rcu_dereference():
=============================
WARNING: suspicious RCU usage
6.3.0-rc1-00144-g064d70527aaa #149 Not tainted
-----------------------------
drivers/net/veth.c:1265 suspicious rcu_dereference_check() usage!
other info that might help us debug this:
rcu_scheduler_active = 2, debug_locks = 1
1 lock held by ip/135:
(net/core/rtnetlink.c:6172)
stack backtrace:
CPU: 1 PID: 135 Comm: ip Not tainted 6.3.0-rc1-00144-g064d70527aaa #149
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1
04/01/2014
Call Trace:
<TASK>
dump_stack_lvl (lib/dump_stack.c:107)
lockdep_rcu_suspicious (include/linux/context_tracking.h:152)
veth_set_xdp_features (drivers/net/veth.c:1265 (discriminator 9))
veth_newlink (drivers/net/veth.c:1892)
? veth_set_features (drivers/net/veth.c:1774)
? kasan_save_stack (mm/kasan/common.c:47)
? kasan_save_stack (mm/kasan/common.c:46)
? kasan_set_track (mm/kasan/common.c:52)
? alloc_netdev_mqs (include/linux/slab.h:737)
? rcu_read_lock_sched_held (kernel/rcu/update.c:125)
? trace_kmalloc (include/trace/events/kmem.h:54)
? __xdp_rxq_info_reg (net/core/xdp.c:188)
? alloc_netdev_mqs (net/core/dev.c:10657)
? rtnl_create_link (net/core/rtnetlink.c:3312)
rtnl_newlink_create (net/core/rtnetlink.c:3440)
? rtnl_link_get_net_capable.constprop.0 (net/core/rtnetlink.c:3391)
__rtnl_newlink (net/core/rtnetlink.c:3657)
? lock_downgrade (kernel/locking/lockdep.c:5321)
? rtnl_link_unregister (net/core/rtnetlink.c:3487)
rtnl_newlink (net/core/rtnetlink.c:3671)
rtnetlink_rcv_msg (net/core/rtnetlink.c:6174)
? rtnl_link_fill (net/core/rtnetlink.c:6070)
? mark_usage (kernel/locking/lockdep.c:4914)
? mark_usage (kernel/locking/lockdep.c:4914)
netlink_rcv_skb (net/netlink/af_netlink.c:2574)
? rtnl_link_fill (net/core/rtnetlink.c:6070)
? netlink_ack (net/netlink/af_netlink.c:2551)
? lock_acquire (kernel/locking/lockdep.c:467)
? net_generic (include/linux/rcupdate.h:805)
? netlink_deliver_tap (include/linux/rcupdate.h:805)
netlink_unicast (net/netlink/af_netlink.c:1340)
? netlink_attachskb (net/netlink/af_netlink.c:1350)
netlink_sendmsg (net/netlink/af_netlink.c:1942)
? netlink_unicast (net/netlink/af_netlink.c:1861)
? netlink_unicast (net/netlink/af_netlink.c:1861)
sock_sendmsg (net/socket.c:727)
____sys_sendmsg (net/socket.c:2501)
? kernel_sendmsg (net/socket.c:2448)
? __copy_msghdr (net/socket.c:2428)
___sys_sendmsg (net/socket.c:2557)
? mark_usage (kernel/locking/lockdep.c:4914)
? do_recvmmsg (net/socket.c:2544)
? lock_acquire (kernel/locking/lockdep.c:467)
? find_held_lock (kernel/locking/lockdep.c:5159)
? __lock_release (kernel/locking/lockdep.c:5345)
? __might_fault (mm/memory.c:5625)
? lock_downgrade (kernel/locking/lockdep.c:5321)
? __fget_light (include/linux/atomic/atomic-arch-fallback.h:227)
__sys_sendmsg (include/linux/file.h:31)
? __sys_sendmsg_sock (net/socket.c:2572)
? rseq_get_rseq_cs (kernel/rseq.c:275)
? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4263)
do_syscall_64 (arch/x86/entry/common.c:50)
entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:120)
RIP: 0033:0x7f0d1aadeb17
Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e
fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00
f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
Fixes: fccca038f300 ("veth: take into account device reconfiguration for xdp_features flag")
Suggested-by: Eric Dumazet <edumazet@google.com>
Reported-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Link: https://lore.kernel.org/netdev/cover.1678364612.git.lorenzo@kernel.org/T/#me4c9d8e985ec7ebee981cfdb5bc5ec651ef4035d
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Reported-by: syzbot+c3d0d9c42d59ff644ea6@syzkaller.appspotmail.com
Reviewed-by: Eric Dumazet <edumazet@google.com>
Tested-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Link: https://lore.kernel.org/r/dfd6a9a7d85e9113063165e1f47b466b90ad7b8a.1678748579.git.lorenzo@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
|
This bug influences both st_nci_i2c_remove and st_nci_spi_remove.
Take st_nci_i2c_remove as an example.
In st_nci_i2c_probe, it called ndlc_probe and bound &ndlc->sm_work
with llt_ndlc_sm_work.
When it calls ndlc_recv or timeout handler, it will finally call
schedule_work to start the work.
When we call st_nci_i2c_remove to remove the driver, there
may be a sequence as follows:
Fix it by finishing the work before cleanup in ndlc_remove
CPU0 CPU1
|llt_ndlc_sm_work
st_nci_i2c_remove |
ndlc_remove |
st_nci_remove |
nci_free_device|
kfree(ndev) |
//free ndlc->ndev |
|llt_ndlc_rcv_queue
|nci_recv_frame
|//use ndlc->ndev
Fixes: 35630df68d60 ("NFC: st21nfcb: Add driver for STMicroelectronics ST21NFCB NFC chip")
Signed-off-by: Zheng Wang <zyytlz.wz@163.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230312160837.2040857-1-zyytlz.wz@163.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
|
Kuniyuki Iwashima says:
====================
tcp: Fix bind() regression for dual-stack wildcard address.
The first patch fixes the regression reported in [0], and the second
patch adds a test for similar cases to catch future regression.
[0]: https://lore.kernel.org/netdev/e21bf153-80b0-9ec0-15ba-e04a4ad42c34@redhat.com/
====================
Link: https://lore.kernel.org/r/20230312031904.4674-1-kuniyu@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
|
The test checks if (IPv4, IPv6) address pair properly conflict or not.
* IPv4
* 0.0.0.0
* 127.0.0.1
* IPv6
* ::
* ::1
If the IPv6 address is [::], the second bind() always fails.
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
|
Paul Holzinger reported [0] that commit 5456262d2baa ("net: Fix
incorrect address comparison when searching for a bind2 bucket")
introduced a bind() regression. Paul also gave a nice repro that
calls two types of bind() on the same port, both of which now
succeed, but the second call should fail:
bind(fd1, ::, port) + bind(fd2, 127.0.0.1, port)
The cited commit added address family tests in three functions to
fix the uninit-value KMSAN report. [1] However, the test added to
inet_bind2_bucket_match_addr_any() removed a necessary conflict
check; the dual-stack wildcard address no longer conflicts with
an IPv4 non-wildcard address.
If tb->family is AF_INET6 and sk->sk_family is AF_INET in
inet_bind2_bucket_match_addr_any(), we still need to check
if tb has the dual-stack wildcard address.
Note that the IPv4 wildcard address does not conflict with
IPv6 non-wildcard addresses.
[0]: https://lore.kernel.org/netdev/e21bf153-80b0-9ec0-15ba-e04a4ad42c34@redhat.com/
[1]: https://lore.kernel.org/netdev/CAG_fn=Ud3zSW7AZWXc+asfMhZVL5ETnvuY44Pmyv4NPv-ijN-A@mail.gmail.com/
Fixes: 5456262d2baa ("net: Fix incorrect address comparison when searching for a bind2 bucket")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Reported-by: Paul Holzinger <pholzing@redhat.com>
Link: https://lore.kernel.org/netdev/CAG_fn=Ud3zSW7AZWXc+asfMhZVL5ETnvuY44Pmyv4NPv-ijN-A@mail.gmail.com/
Reviewed-by: Eric Dumazet <edumazet@google.com>
Tested-by: Paul Holzinger <pholzing@redhat.com>
Reviewed-by: Martin KaFai Lau <martin.lau@kernel.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
|
If genphy_read_status fails then further access to the PHY may result
in unpredictable behavior. To prevent this bail out immediately if
genphy_read_status fails.
Fixes: 4223dbffed9f ("net: phy: smsc: Re-enable EDPD mode for LAN87xx")
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Link: https://lore.kernel.org/r/026aa4f2-36f5-1c10-ab9f-cdb17dda6ac4@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
|
IP tunnels can apparently update dev->needed_headroom
in their xmit path.
This patch takes care of three tunnels xmit, and also the
core LL_RESERVED_SPACE() and LL_RESERVED_SPACE_EXTRA()
helpers.
More changes might be needed for completeness.
BUG: KCSAN: data-race in ip_tunnel_xmit / ip_tunnel_xmit
read to 0xffff88815b9da0ec of 2 bytes by task 888 on cpu 1:
ip_tunnel_xmit+0x1270/0x1730 net/ipv4/ip_tunnel.c:803
__gre_xmit net/ipv4/ip_gre.c:469 [inline]
ipgre_xmit+0x516/0x570 net/ipv4/ip_gre.c:661
__netdev_start_xmit include/linux/netdevice.h:4881 [inline]
netdev_start_xmit include/linux/netdevice.h:4895 [inline]
xmit_one net/core/dev.c:3580 [inline]
dev_hard_start_xmit+0x127/0x400 net/core/dev.c:3596
__dev_queue_xmit+0x1007/0x1eb0 net/core/dev.c:4246
dev_queue_xmit include/linux/netdevice.h:3051 [inline]
neigh_direct_output+0x17/0x20 net/core/neighbour.c:1623
neigh_output include/net/neighbour.h:546 [inline]
ip_finish_output2+0x740/0x840 net/ipv4/ip_output.c:228
ip_finish_output+0xf4/0x240 net/ipv4/ip_output.c:316
NF_HOOK_COND include/linux/netfilter.h:291 [inline]
ip_output+0xe5/0x1b0 net/ipv4/ip_output.c:430
dst_output include/net/dst.h:444 [inline]
ip_local_out+0x64/0x80 net/ipv4/ip_output.c:126
iptunnel_xmit+0x34a/0x4b0 net/ipv4/ip_tunnel_core.c:82
ip_tunnel_xmit+0x1451/0x1730 net/ipv4/ip_tunnel.c:813
__gre_xmit net/ipv4/ip_gre.c:469 [inline]
ipgre_xmit+0x516/0x570 net/ipv4/ip_gre.c:661
__netdev_start_xmit include/linux/netdevice.h:4881 [inline]
netdev_start_xmit include/linux/netdevice.h:4895 [inline]
xmit_one net/core/dev.c:3580 [inline]
dev_hard_start_xmit+0x127/0x400 net/core/dev.c:3596
__dev_queue_xmit+0x1007/0x1eb0 net/core/dev.c:4246
dev_queue_xmit include/linux/netdevice.h:3051 [inline]
neigh_direct_output+0x17/0x20 net/core/neighbour.c:1623
neigh_output include/net/neighbour.h:546 [inline]
ip_finish_output2+0x740/0x840 net/ipv4/ip_output.c:228
ip_finish_output+0xf4/0x240 net/ipv4/ip_output.c:316
NF_HOOK_COND include/linux/netfilter.h:291 [inline]
ip_output+0xe5/0x1b0 net/ipv4/ip_output.c:430
dst_output include/net/dst.h:444 [inline]
ip_local_out+0x64/0x80 net/ipv4/ip_output.c:126
iptunnel_xmit+0x34a/0x4b0 net/ipv4/ip_tunnel_core.c:82
ip_tunnel_xmit+0x1451/0x1730 net/ipv4/ip_tunnel.c:813
__gre_xmit net/ipv4/ip_gre.c:469 [inline]
ipgre_xmit+0x516/0x570 net/ipv4/ip_gre.c:661
__netdev_start_xmit include/linux/netdevice.h:4881 [inline]
netdev_start_xmit include/linux/netdevice.h:4895 [inline]
xmit_one net/core/dev.c:3580 [inline]
dev_hard_start_xmit+0x127/0x400 net/core/dev.c:3596
__dev_queue_xmit+0x1007/0x1eb0 net/core/dev.c:4246
dev_queue_xmit include/linux/netdevice.h:3051 [inline]
neigh_direct_output+0x17/0x20 net/core/neighbour.c:1623
neigh_output include/net/neighbour.h:546 [inline]
ip_finish_output2+0x740/0x840 net/ipv4/ip_output.c:228
ip_finish_output+0xf4/0x240 net/ipv4/ip_output.c:316
NF_HOOK_COND include/linux/netfilter.h:291 [inline]
ip_output+0xe5/0x1b0 net/ipv4/ip_output.c:430
dst_output include/net/dst.h:444 [inline]
ip_local_out+0x64/0x80 net/ipv4/ip_output.c:126
iptunnel_xmit+0x34a/0x4b0 net/ipv4/ip_tunnel_core.c:82
ip_tunnel_xmit+0x1451/0x1730 net/ipv4/ip_tunnel.c:813
__gre_xmit net/ipv4/ip_gre.c:469 [inline]
ipgre_xmit+0x516/0x570 net/ipv4/ip_gre.c:661
__netdev_start_xmit include/linux/netdevice.h:4881 [inline]
netdev_start_xmit include/linux/netdevice.h:4895 [inline]
xmit_one net/core/dev.c:3580 [inline]
dev_hard_start_xmit+0x127/0x400 net/core/dev.c:3596
__dev_queue_xmit+0x1007/0x1eb0 net/core/dev.c:4246
dev_queue_xmit include/linux/netdevice.h:3051 [inline]
neigh_direct_output+0x17/0x20 net/core/neighbour.c:1623
neigh_output include/net/neighbour.h:546 [inline]
ip_finish_output2+0x740/0x840 net/ipv4/ip_output.c:228
ip_finish_output+0xf4/0x240 net/ipv4/ip_output.c:316
NF_HOOK_COND include/linux/netfilter.h:291 [inline]
ip_output+0xe5/0x1b0 net/ipv4/ip_output.c:430
dst_output include/net/dst.h:444 [inline]
ip_local_out+0x64/0x80 net/ipv4/ip_output.c:126
iptunnel_xmit+0x34a/0x4b0 net/ipv4/ip_tunnel_core.c:82
ip_tunnel_xmit+0x1451/0x1730 net/ipv4/ip_tunnel.c:813
__gre_xmit net/ipv4/ip_gre.c:469 [inline]
ipgre_xmit+0x516/0x570 net/ipv4/ip_gre.c:661
__netdev_start_xmit include/linux/netdevice.h:4881 [inline]
netdev_start_xmit include/linux/netdevice.h:4895 [inline]
xmit_one net/core/dev.c:3580 [inline]
dev_hard_start_xmit+0x127/0x400 net/core/dev.c:3596
__dev_queue_xmit+0x1007/0x1eb0 net/core/dev.c:4246
dev_queue_xmit include/linux/netdevice.h:3051 [inline]
neigh_direct_output+0x17/0x20 net/core/neighbour.c:1623
neigh_output include/net/neighbour.h:546 [inline]
ip_finish_output2+0x740/0x840 net/ipv4/ip_output.c:228
ip_finish_output+0xf4/0x240 net/ipv4/ip_output.c:316
NF_HOOK_COND include/linux/netfilter.h:291 [inline]
ip_output+0xe5/0x1b0 net/ipv4/ip_output.c:430
dst_output include/net/dst.h:444 [inline]
ip_local_out+0x64/0x80 net/ipv4/ip_output.c:126
iptunnel_xmit+0x34a/0x4b0 net/ipv4/ip_tunnel_core.c:82
ip_tunnel_xmit+0x1451/0x1730 net/ipv4/ip_tunnel.c:813
__gre_xmit net/ipv4/ip_gre.c:469 [inline]
ipgre_xmit+0x516/0x570 net/ipv4/ip_gre.c:661
__netdev_start_xmit include/linux/netdevice.h:4881 [inline]
netdev_start_xmit include/linux/netdevice.h:4895 [inline]
xmit_one net/core/dev.c:3580 [inline]
dev_hard_start_xmit+0x127/0x400 net/core/dev.c:3596
__dev_queue_xmit+0x1007/0x1eb0 net/core/dev.c:4246
dev_queue_xmit include/linux/netdevice.h:3051 [inline]
neigh_direct_output+0x17/0x20 net/core/neighbour.c:1623
neigh_output include/net/neighbour.h:546 [inline]
ip_finish_output2+0x740/0x840 net/ipv4/ip_output.c:228
ip_finish_output+0xf4/0x240 net/ipv4/ip_output.c:316
NF_HOOK_COND include/linux/netfilter.h:291 [inline]
ip_output+0xe5/0x1b0 net/ipv4/ip_output.c:430
dst_output include/net/dst.h:444 [inline]
ip_local_out+0x64/0x80 net/ipv4/ip_output.c:126
iptunnel_xmit+0x34a/0x4b0 net/ipv4/ip_tunnel_core.c:82
ip_tunnel_xmit+0x1451/0x1730 net/ipv4/ip_tunnel.c:813
__gre_xmit net/ipv4/ip_gre.c:469 [inline]
ipgre_xmit+0x516/0x570 net/ipv4/ip_gre.c:661
__netdev_start_xmit include/linux/netdevice.h:4881 [inline]
netdev_start_xmit include/linux/netdevice.h:4895 [inline]
xmit_one net/core/dev.c:3580 [inline]
dev_hard_start_xmit+0x127/0x400 net/core/dev.c:3596
__dev_queue_xmit+0x1007/0x1eb0 net/core/dev.c:4246
write to 0xffff88815b9da0ec of 2 bytes by task 2379 on cpu 0:
ip_tunnel_xmit+0x1294/0x1730 net/ipv4/ip_tunnel.c:804
__gre_xmit net/ipv4/ip_gre.c:469 [inline]
ipgre_xmit+0x516/0x570 net/ipv4/ip_gre.c:661
__netdev_start_xmit include/linux/netdevice.h:4881 [inline]
netdev_start_xmit include/linux/netdevice.h:4895 [inline]
xmit_one net/core/dev.c:3580 [inline]
dev_hard_start_xmit+0x127/0x400 net/core/dev.c:3596
__dev_queue_xmit+0x1007/0x1eb0 net/core/dev.c:4246
dev_queue_xmit include/linux/netdevice.h:3051 [inline]
neigh_direct_output+0x17/0x20 net/core/neighbour.c:1623
neigh_output include/net/neighbour.h:546 [inline]
ip6_finish_output2+0x9bc/0xc50 net/ipv6/ip6_output.c:134
__ip6_finish_output net/ipv6/ip6_output.c:195 [inline]
ip6_finish_output+0x39a/0x4e0 net/ipv6/ip6_output.c:206
NF_HOOK_COND include/linux/netfilter.h:291 [inline]
ip6_output+0xeb/0x220 net/ipv6/ip6_output.c:227
dst_output include/net/dst.h:444 [inline]
NF_HOOK include/linux/netfilter.h:302 [inline]
mld_sendpack+0x438/0x6a0 net/ipv6/mcast.c:1820
mld_send_cr net/ipv6/mcast.c:2121 [inline]
mld_ifc_work+0x519/0x7b0 net/ipv6/mcast.c:2653
process_one_work+0x3e6/0x750 kernel/workqueue.c:2390
worker_thread+0x5f2/0xa10 kernel/workqueue.c:2537
kthread+0x1ac/0x1e0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
value changed: 0x0dd4 -> 0x0e14
Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 2379 Comm: kworker/0:0 Not tainted 6.3.0-rc1-syzkaller-00002-g8ca09d5fa354-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Workqueue: mld mld_ifc_work
Fixes: 8eb30be0352d ("ipv6: Create ip6_tnl_xmit")
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20230310191109.2384387-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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RDMA is not supported in ice on a PF that has been added to a bonded
interface. To enforce this, when an interface enters a bond, we unplug
the auxiliary device that supports RDMA functionality. This unplug
currently happens in the context of handling the netdev bonding event.
This event is sent to the ice driver under RTNL context. This is causing
a deadlock where the RDMA driver is waiting for the RTNL lock to complete
the removal.
Defer the unplugging/re-plugging of the auxiliary device to the service
task so that it is not performed under the RTNL lock context.
Cc: stable@vger.kernel.org # 6.1.x
Reported-by: Jaroslav Pulchart <jaroslav.pulchart@gooddata.com>
Link: https://lore.kernel.org/netdev/CAK8fFZ6A_Gphw_3-QMGKEFQk=sfCw1Qmq0TVZK3rtAi7vb621A@mail.gmail.com/
Fixes: 5cb1ebdbc434 ("ice: Fix race condition during interface enslave")
Fixes: 4eace75e0853 ("RDMA/irdma: Report the correct link speed")
Signed-off-by: Dave Ertman <david.m.ertman@intel.com>
Tested-by: Arpana Arland <arpanax.arland@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Link: https://lore.kernel.org/r/20230310194833.3074601-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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If no frames has been exchanged with a node for HSR_NODE_FORGET_TIME, the
node will be deleted from the node_db list. If a frame is sent to the node
after it is deleted, a netdev_err message for each slave interface is
produced. This should not happen with dan nodes because of supervision
frames, but can happen often with san nodes, which clutters the kernel
log. Since the hsr protocol does not support sans, this is only relevant
for the prp protocol.
Signed-off-by: Kristian Overskeid <koverskeid@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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A recent commit eliminated a hack that adjusted the offset used for
many GSI registers. It became possible because we now specify all
GSI register offsets explicitly for every version of IPA.
Unfortunately, a large number of register offsets were *not* updated
as they should have been in that commit. For IPA v4.5+, the offset
for every GSI register *except* the two inter-EE interrupt masking
registers were supposed to have been reduced by 0xd000.
Tested-by: Luca Weiss <luca.weiss@fairphone.com>
Tested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> # SM8350-HDK
Fixes: 59b12b1d27f3 ("net: ipa: kill gsi->virt_raw")
Signed-off-by: Alex Elder <elder@linaro.org>
Link: https://lore.kernel.org/r/20230310193709.1477102-1-elder@linaro.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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As my testing on the MCM MT7530 switch on MT7621 SoC shows, setting the PLL
frequency does not affect MII modes other than trgmii on port 5 and port 6.
So the assumption is that the operation here called "setting the PLL
frequency" actually sets the frequency of the TRGMII TX clock.
Make it so that it and the rest of the trgmii setup run only when the
trgmii mode is used.
Tested rgmii and trgmii modes of port 6 on MCM MT7530 on MT7621AT Unielec
U7621-06 and standalone MT7530 on MT7623NI Bananapi BPI-R2.
Fixes: b8f126a8d543 ("net-next: dsa: add dsa support for Mediatek MT7530 switch")
Tested-by: Arınç ÜNAL <arinc.unal@arinc9.com>
Signed-off-by: Arınç ÜNAL <arinc.unal@arinc9.com>
Link: https://lore.kernel.org/r/20230310073338.5836-2-arinc.unal@arinc9.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Remove now incorrect comment regarding port 5 as GMAC5. This is supposed to
be supported since commit 38f790a80560 ("net: dsa: mt7530: Add support for
port 5") under mt7530_setup_port5().
Fixes: 38f790a80560 ("net: dsa: mt7530: Add support for port 5")
Signed-off-by: Arınç ÜNAL <arinc.unal@arinc9.com>
Link: https://lore.kernel.org/r/20230310073338.5836-1-arinc.unal@arinc9.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Previously we would divide total_left_rate by zero if num_vports
happened to be 1 because non_requested_count is calculated as
num_vports - req_count. Guard against this by validating num_vports at
the beginning and returning an error otherwise.
Found by Linux Verification Center (linuxtesting.org) with the SVACE
static analysis tool.
Fixes: bcd197c81f63 ("qed: Add vport WFQ configuration APIs")
Signed-off-by: Daniil Tatianin <d-tatianin@yandex-team.ru>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Link: https://lore.kernel.org/r/20230309201556.191392-1-d-tatianin@yandex-team.ru
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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When performing a stress test on SMC-R by rmmod mlx5_ib driver
during the wrk/nginx test, we found that there is a probability
of triggering a panic while terminating all link groups.
This issue dues to the race between smc_smcr_terminate_all()
and smc_buf_create().
smc_smcr_terminate_all
smc_buf_create
/* init */
conn->sndbuf_desc = NULL;
...
__smc_lgr_terminate
smc_conn_kill
smc_close_abort
smc_cdc_get_slot_and_msg_send
__softirqentry_text_start
smc_wr_tx_process_cqe
smc_cdc_tx_handler
READ(conn->sndbuf_desc->len);
/* panic dues to NULL sndbuf_desc */
conn->sndbuf_desc = xxx;
This patch tries to fix the issue by always to check the sndbuf_desc
before send any cdc msg, to make sure that no null pointer is
seen during cqe processing.
Fixes: 0b29ec643613 ("net/smc: immediate termination for SMCR link groups")
Signed-off-by: D. Wythe <alibuda@linux.alibaba.com>
Reviewed-by: Tony Lu <tonylu@linux.alibaba.com>
Reviewed-by: Wenjia Zhang <wenjia@linux.ibm.com>
Link: https://lore.kernel.org/r/1678263432-17329-1-git-send-email-alibuda@linux.alibaba.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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When using a PHC in shared between multiple hosts, the previous
frequency value may not be reset and could lead to host being unable to
compensate the offset with timecounter adjustments. To avoid such state
reset the hardware frequency of PHC to zero on init. Some refactoring is
needed to make code readable.
Fixes: 85036aee1938 ("bnxt_en: Add a non-real time mode to access NIC clock")
Signed-off-by: Vadim Fedorenko <vadfed@meta.com>
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Link: https://lore.kernel.org/r/20230310151356.678059-1-vadfed@meta.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Pablo Neira Ayuso says:
====================
Netfilter fixes for net
1) nft_parse_register_load() gets an incorrect datatype size
as input, from Jeremy Sowden.
2) incorrect maximum netlink attribute in nft_redir, also
from Jeremy.
* git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf:
netfilter: nft_redir: correct value of inet type `.maxattrs`
netfilter: nft_redir: correct length for loading protocol registers
netfilter: nft_masq: correct length for loading protocol registers
netfilter: nft_nat: correct length for loading protocol registers
====================
Link: https://lore.kernel.org/r/20230309174655.69816-1-pablo@netfilter.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Matthieu Baerts says:
====================
mptcp: fixes for 6.3
Patch 1 fixes a possible deadlock in subflow_error_report() reported by
lockdep. The report was in fact a false positive but the modification
makes sense and silences lockdep to allow syzkaller to find real issues.
The regression has been introduced in v5.12.
Patch 2 is a refactoring needed to be able to fix the two next issues.
It improves the situation and can be backported up to v6.0.
Patches 3 and 4 fix UaF reported by KASAN. It fixes issues potentially
visible since v5.7 and v5.19 but only reproducible until recently
(v6.0). These two patches depend on patch 2/7.
Patch 5 fixes the order of the printed values: expected vs seen values.
The regression has been introduced recently: v6.3-rc1.
Patch 6 adds missing ro_after_init flags. A previous patch added them
for other functions but these two have been missed. This previous patch
has been backported to stable versions (up to v5.12) so probably better
to do the same here.
Patch 7 fixes tcp_set_state() being called twice in a row since v5.10.
Patch 8 fixes another lockdep false positive issue but this time in
MPTCP PM code. Same here, some modifications in the code has been made
to silence this issue and help finding real ones later. This issue can
be seen since v6.2.
v1: https://lore.kernel.org/r/20230227-upstream-net-20230227-mptcp-fixes-v1-0-070e30ae4a8e@tessares.net
====================
Link: https://lore.kernel.org/r/20230227-upstream-net-20230227-mptcp-fixes-v2-0-47c2e95eada9@tessares.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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