[Intel-gfx] [PATCH v3] drm/i915: Fix use after free in lpe_audio_platdev_destroy()

2017-04-12 Thread Chris Wilson
[31908.547136] BUG: KASAN: use-after-free in intel_lpe_audio_teardown+0x78/0xb0 [i915] at addr 8801f7788358 [31908.547297] Read of size 8 by task drv_selftest/3781 [31908.547405] CPU: 0 PID: 3781 Comm: drv_selftest Tainted: GBU W 4.10.0+ #451 [31908.547553] Hardware name:

Re: [Intel-gfx] [PATCH v3] drm/i915: Fix use after free in lpe_audio_platdev_destroy()

2017-04-12 Thread Ville Syrjälä
On Wed, Apr 12, 2017 at 09:31:39AM +0100, Chris Wilson wrote: > [31908.547136] BUG: KASAN: use-after-free in > intel_lpe_audio_teardown+0x78/0xb0 [i915] at addr 8801f7788358 > [31908.547297] Read of size 8 by task drv_selftest/3781 > [31908.547405] CPU: 0 PID: 3781 Comm: drv_selftest Tainted:

Re: [Intel-gfx] [PATCH v3] drm/i915: Fix use after free in lpe_audio_platdev_destroy()

2017-04-12 Thread Chris Wilson
On Wed, Apr 12, 2017 at 11:52:54AM +0300, Ville Syrjälä wrote: > On Wed, Apr 12, 2017 at 09:31:39AM +0100, Chris Wilson wrote: > > drivers/gpu/drm/i915/intel_lpe_audio.c | 4 ++-- > > 1 file changed, 2 insertions(+), 2 deletions(-) > > > > diff --git a/drivers/gpu/drm/i915/intel_lpe_audio.c > >

Re: [Intel-gfx] [PATCH v3] drm/i915: Fix use after free in lpe_audio_platdev_destroy()

2017-04-12 Thread Takashi Iwai
On Wed, 12 Apr 2017 10:52:54 +0200, Ville Syrjälä wrote: > > On Wed, Apr 12, 2017 at 09:31:39AM +0100, Chris Wilson wrote: > > [31908.547136] BUG: KASAN: use-after-free in > > intel_lpe_audio_teardown+0x78/0xb0 [i915] at addr 8801f7788358 > > [31908.547297] Read of size 8 by task drv_selftest

Re: [Intel-gfx] [PATCH v3] drm/i915: Fix use after free in lpe_audio_platdev_destroy()

2017-04-12 Thread Ville Syrjälä
On Wed, Apr 12, 2017 at 01:41:05PM +0200, Takashi Iwai wrote: > On Wed, 12 Apr 2017 10:52:54 +0200, > Ville Syrjälä wrote: > > > > On Wed, Apr 12, 2017 at 09:31:39AM +0100, Chris Wilson wrote: > > > [31908.547136] BUG: KASAN: use-after-free in > > > intel_lpe_audio_teardown+0x78/0xb0 [i915] at ad