From: Yang Li <yang.lee@linux.alibaba.com>
To: alexander.deucher@amd.com
Cc: Felix.Kuehling@amd.com, christian.koenig@amd.com,
Xinhui.Pan@amd.com, airlied@gmail.com, daniel@ffwll.ch,
amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
linux-kernel@vger.kernel.org,
Yang Li <yang.lee@linux.alibaba.com>,
Abaci Robot <abaci@linux.alibaba.com>
Subject: [PATCH -next] drm/amdkfd: Fix NULL pointer dereference in svm_migrate_to_ram()
Date: Tue, 25 Oct 2022 15:28:22 +0800 [thread overview]
Message-ID: <20221025072822.129940-1-yang.lee@linux.alibaba.com> (raw)
./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
next reply other threads:[~2022-10-25 7:28 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-25 7:28 Yang Li [this message]
2022-10-25 19:39 ` [PATCH -next] drm/amdkfd: Fix NULL pointer dereference in svm_migrate_to_ram() Felix Kuehling
2022-10-26 2:00 Yang Li
2022-10-26 20:37 ` Felix Kuehling
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