diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2016-04-03 14:14:20 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2016-04-03 15:10:07 +0100 |
| commit | 188c1ab7769dd7c092f9b1be5f69aa34d4a6f9d6 (patch) | |
| tree | 8a7c76dc7a8967a82d2a43ffba7a0d0c79f92096 /tools/perf/scripts/python/futex-contention.py | |
| parent | fca0ce2a5caf6ae7d9d8510fb87ae6195b40057a (diff) | |
drm/i915: Add struct_mutex locking for debugs/i915_gem_framebuffer
Since describe_obj() looks at state guarded by the struct_mutex, we need
to be holding it.
[ 580.201054] drv_suspend: starting subtest debugfs-reader
[ 580.239652] ------------[ cut here ]------------
[ 580.239696] WARNING: CPU: 0 PID: 920 at include/linux/list_check.h:25 describe_obj+0x419/0x440()
[ 580.239725] CPU: 0 PID: 920 Comm: cat Not tainted 4.5.0-rc6+ #835
[ 580.239745] Hardware name: /NUC5CPYB, BIOS PYBSWCEL.86A.0027.2015.0507.1758 05/07/2015
[ 580.239767] 0000000000000000 ffff88027554fcf8 ffffffff812c1135 0000000000000000
[ 580.239815] ffffffff8193dc42 ffff88027554fd30 ffffffff8107419d ffff880071727c00
[ 580.239858] ffff8802757d8000 ffffffff818f693c ffffffff818f693c ffff8802757b9048
[ 580.239896] Call Trace:
[ 580.239917] [<ffffffff812c1135>] dump_stack+0x67/0x92
[ 580.239939] [<ffffffff8107419d>] warn_slowpath_common+0x7d/0xb0
[ 580.239959] [<ffffffff810742ba>] warn_slowpath_null+0x1a/0x20
[ 580.239981] [<ffffffff813ce579>] describe_obj+0x419/0x440
[ 580.240006] [<ffffffff813ced22>] i915_gem_framebuffer_info+0xa2/0x100
[ 580.240033] [<ffffffff811a9286>] seq_read+0xe6/0x3b0
[ 580.240059] [<ffffffff81182288>] __vfs_read+0x28/0xd0
[ 580.240085] [<ffffffff81173378>] ? SyS_fadvise64+0x228/0x2c0
[ 580.240112] [<ffffffff811823b2>] vfs_read+0x82/0x110
[ 580.240137] [<ffffffff811827d9>] SyS_read+0x49/0xa0
[ 580.240162] [<ffffffff815bac57>] entry_SYSCALL_64_fastpath+0x12/0x6b
[ 580.240187] ---[ end trace 3e2cbf34576c9878 ]---
[ 580.281900] ------------[ cut here ]------------
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1459689261-7920-1-git-send-email-chris@chris-wilson.co.uk
Diffstat (limited to 'tools/perf/scripts/python/futex-contention.py')
0 files changed, 0 insertions, 0 deletions