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| author | Thomas Gleixner <[email protected]> | 2025-08-02 10:49:48 +0000 |
|---|---|---|
| committer | Thomas Gleixner <[email protected]> | 2025-08-05 19:55:29 +0000 |
| commit | 07091aade394f690e7b655578140ef84d0e8d7b0 (patch) | |
| tree | 1914fdc110633c8247a3f0c2dcaeb29a8076bef1 /drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c | |
| parent | perf/core: Don't leak AUX buffer refcount on allocation failure (diff) | |
| download | kernel-07091aade394f690e7b655578140ef84d0e8d7b0.tar.gz kernel-07091aade394f690e7b655578140ef84d0e8d7b0.zip | |
perf/core: Exit early on perf_mmap() fail
When perf_mmap() fails to allocate a buffer, it still invokes the
event_mapped() callback of the related event. On X86 this might increase
the perf_rdpmc_allowed reference counter. But nothing undoes this as
perf_mmap_close() is never called in this case, which causes another
reference count leak.
Return early on failure to prevent that.
Fixes: 1e0fb9ec679c ("perf: Add pmu callbacks to track event mapping and unmapping")
Signed-off-by: Thomas Gleixner <[email protected]>
Reviewed-by: Lorenzo Stoakes <[email protected]>
Cc: [email protected]
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c')
0 files changed, 0 insertions, 0 deletions