Messages in this thread Patch in this message | | | From | Yang Li <> | Subject | [PATCH -next] drm/amdkfd: Fix NULL pointer dereference in svm_migrate_to_ram() | Date | Tue, 25 Oct 2022 15:28:22 +0800 |
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./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> --- drivers/gpu/drm/amd/amdkfd/kfd_migrate.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c b/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c index cddf259875c0..405dd51521dc 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c @@ -981,7 +981,8 @@ static vm_fault_t svm_migrate_to_ram(struct vm_fault *vmf) out_mmput: mmput(mm); - pr_debug("CPU fault svms 0x%p address 0x%lx done\n", &p->svms, addr); + if (p) + pr_debug("CPU fault svms 0x%p address 0x%lx done\n", &p->svms, addr); return r ? VM_FAULT_SIGBUS : 0; } -- 2.20.1.7.g153144c
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