Merge tag 'net-6.5-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Paolo Abeni:
 "Including fixes from wifi, can and netfilter.

  Fixes to fixes:

   - nf_tables:
       - GC transaction race with abort path
       - defer gc run if previous batch is still pending

  Previous releases - regressions:

   - ipv4: fix data-races around inet->inet_id

   - phy: fix deadlocking in phy_error() invocation

   - mdio: fix C45 read/write protocol

   - ipvlan: fix a reference count leak warning in ipvlan_ns_exit()

   - ice: fix NULL pointer deref during VF reset

   - i40e: fix potential NULL pointer dereferencing of pf->vf in
     i40e_sync_vsi_filters()

   - tg3: use slab_build_skb() when needed

   - mtk_eth_soc: fix NULL pointer on hw reset

  Previous releases - always broken:

   - core: validate veth and vxcan peer ifindexes

   - sched: fix a qdisc modification with ambiguous command request

   - devlink: add missing unregister linecard notification

   - wifi: mac80211: limit reorder_buf_filtered to avoid UBSAN warning

   - batman:
      - do not get eth header before batadv_check_management_packet
      - fix batadv_v_ogm_aggr_send memory leak

   - bonding: fix macvlan over alb bond support

   - mlxsw: set time stamp fields also when its type is MIRROR_UTC"

* tag 'net-6.5-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (54 commits)
  selftests: bonding: add macvlan over bond testing
  selftest: bond: add new topo bond_topo_2d1c.sh
  bonding: fix macvlan over alb bond support
  rtnetlink: Reject negative ifindexes in RTM_NEWLINK
  netfilter: nf_tables: defer gc run if previous batch is still pending
  netfilter: nf_tables: fix out of memory error handling
  netfilter: nf_tables: use correct lock to protect gc_list
  netfilter: nf_tables: GC transaction race with abort path
  netfilter: nf_tables: flush pending destroy work before netlink notifier
  netfilter: nf_tables: validate all pending tables
  ibmveth: Use dcbf rather than dcbfl
  i40e: fix potential NULL pointer dereferencing of pf->vf i40e_sync_vsi_filters()
  net/sched: fix a qdisc modification with ambiguous command request
  igc: Fix the typo in the PTM Control macro
  batman-adv: Hold rtnl lock during MTU update via netlink
  igb: Avoid starting unnecessary workqueues
  can: raw: add missing refcount for memory leak fix
  can: isotp: fix support for transmission of SF without flow control
  bnx2x: new flag for track HW resource allocation
  sfc: allocate a big enough SKB for loopback selftest packet
  ...

1 files changed, 7 insertions, 4 deletions

diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
index bdf00b2b2c1d..a9ecfdd19624 100644
--- a/drivers/net/phy/phy.c
+++ b/drivers/net/phy/phy.c
@@ -1184,9 +1184,11 @@ void phy_stop_machine(struct phy_device *phydev)
 
 static void phy_process_error(struct phy_device *phydev)
 {
-	mutex_lock(&phydev->lock);
+	/* phydev->lock must be held for the state change to be safe */
+	if (!mutex_is_locked(&phydev->lock))
+		phydev_err(phydev, "PHY-device data unsafe context\n");
+
 	phydev->state = PHY_ERROR;
-	mutex_unlock(&phydev->lock);
 
 	phy_trigger_machine(phydev);
 }
@@ -1195,7 +1197,9 @@ static void phy_error_precise(struct phy_device *phydev,
 			      const void *func, int err)
 {
 	WARN(1, "%pS: returned: %d\n", func, err);
+	mutex_lock(&phydev->lock);
 	phy_process_error(phydev);
+	mutex_unlock(&phydev->lock);
 }
 
 /**
@@ -1204,8 +1208,7 @@ static void phy_error_precise(struct phy_device *phydev,
  *
  * Moves the PHY to the ERROR state in response to a read
  * or write error, and tells the controller the link is down.
- * Must not be called from interrupt context, or while the
- * phydev->lock is held.
+ * Must be called with phydev->lock held.
  */
 void phy_error(struct phy_device *phydev)
 {