Jeffy Chen 7827912725 drm/atomic: Unref duplicated drm_atomic_state in drm_atomic_helper_resume() ... Kmemleak reported memory leak after suspend and resume: unreferenced object 0xffffffc0e31d8880 (size 128): comm "bash", pid 181, jiffies 4294763583 (age 24.694s) hex dump (first 32 bytes): 01 00 00 00 00 00 00 00 00 20 a2 eb c0 ff ff ff ......... ...... 01 00 00 00 00 00 00 00 80 87 1d e3 c0 ff ff ff ................ backtrace: [<ffffffc00034bb64>] __save_stack_trace+0x48/0x6c [<ffffffc00034c244>] create_object+0x138/0x254 [<ffffffc0009dd218>] kmemleak_alloc+0x58/0x8c [<ffffffc000346de4>] kmem_cache_alloc_trace+0x188/0x254 [<ffffffc0005af4c0>] drm_atomic_state_alloc+0x3c/0x88 [<ffffffc000591f0c>] drm_atomic_helper_duplicate_state+0x28/0x158 [<ffffffc000592098>] drm_atomic_helper_suspend+0x5c/0xf0 Problem here is that we are duplicating the drm_atomic_state in drm_atomic_helper_suspend(), but not unreference it in the resume path. Fixes: 1494276000 ("drm/atomic-helper: Implement subsystem-level suspend/resume") Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com> Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20171009064641.15174-1-jeffy.chen@rock-chips.com Fixes: 0853695c3b ("drm: Add reference counting to drm_atomic_state") Cc: <stable@vger.kernel.org> # v4.10+ (cherry picked from commit 6d281b1f79)		2017-10-09 14:26:45 +02:00
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drm	drm/atomic: Unref duplicated drm_atomic_state in drm_atomic_helper_resume()	2017-10-09 14:26:45 +02:00
host1x	drm/tegra: Changes for v4.14-rc1	2017-08-21 17:37:33 +10:00
ipu-v3	main drm pull request for 4.14 merge window	2017-09-03 17:02:26 -07:00
vga	sched/wait: Rename wait_queue_t => wait_queue_entry_t	2017-06-20 12:18:27 +02:00
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