Commit 9682069a authored by Yang Li's avatar Yang Li Committed by Alex Deucher
Browse files

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

./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: default avatarAbaci Robot <abaci@linux.alibaba.com>
Signed-off-by: default avatarYang Li <yang.lee@linux.alibaba.com>
Reviewed-by: default avatarFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: default avatarFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent d232afb1

drivers/gpu/drm/amd/amdkfd/kfd_migrate.c

+1 −3
Original line number Diff line number Diff line
@@ -973,12 +973,10 @@ static vm_fault_t svm_migrate_to_ram(struct vm_fault *vmf) 
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;

}