drm/omap: fix race condition with dev->obj_list

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omap_gem_objects are added to dev->obj_list in omap_gem_new, and removed
in omap_gem_free_object. Unfortunately there's no locking for
dev->obj_list, which eventually leads to a crash:

WARNING: CPU: 1 PID: 1123 at lib/list_debug.c:59 __list_del_entry+0xa4/0xe0()
list_del corruption. prev->next should be e9281344, but was ea722b84

Add a spinlock to protect dev->obj_list.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

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This commit is contained in:

Tomi Valkeinen 2014-12-17 14:34:22 +02:00

parent 8519c62ce6

commit 76c4055f2c

3 changed files with 9 additions and 0 deletions

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1

drivers/gpu/drm/omapdrm/omap_drv.c

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3

drivers/gpu/drm/omapdrm/omap_drv.h

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5

drivers/gpu/drm/omapdrm/omap_gem.c

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