Chris Wilson 188c1ab776 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		2016-04-03 15:10:07 +01:00
..
drm	drm/i915: Add struct_mutex locking for debugs/i915_gem_framebuffer	2016-04-03 15:10:07 +01:00
host1x	gpu: host1x: Set DMA ops on device creation	2016-03-04 16:24:57 +01:00
ipu-v3	Merge drm-fixes into drm-next.	2016-03-14 09:46:02 +10:00
vga	vga_switcheroo: Add support for switching only the DDC	2016-02-09 11:21:07 +01:00
Makefile