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drm/amdkfd: Fix NULL pointer dereference in svm_migrate_to_ram()

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[ Upstream commit 5b994354af3cab770bf13386469c5725713679af ]

./drivers/gpu/drm/amd/amdkfd/kfd_migrate.c:985:58-62: ERROR: p is NULL but dereferenced.

Link: https://bugzilla.openanolis.cn/show_bug.cgi?id=2549
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Yang Li 2022-10-26 10:00:54 +08:00 committed by Greg Kroah-Hartman
parent b1f8522771
commit 3c1bb6187e
1 changed files with 1 additions and 3 deletions
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4
drivers/gpu/drm/amd/amdkfd/kfd_migrate.c
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@ -865,12 +865,10 @@ out_unlock_prange:
out_unlock_svms:
mutex_unlock(&p->svms.lock);
out_unref_process:
pr_debug("CPU fault svms 0x%p address 0x%lx done\n", &p->svms, addr);
kfd_unref_process(p);
out_mmput:
mmput(mm);
pr_debug("CPU fault svms 0x%p address 0x%lx done\n", &p->svms, addr);
return r ? VM_FAULT_SIGBUS : 0;
}