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| author | Jiang Biao | 2018-07-20 02:06:32 +0200 |
|---|---|---|
| committer | Thomas Gleixner | 2018-07-20 07:07:39 +0200 |
| commit | 8c934e01a7ce685d98e970880f5941d79272c654 (patch) | |
| tree | 31d28a6c15860b60aecd2c30d1c0098c3b98ff13 /arch/h8300/kernel/ptrace.c | |
| parent | x86/pti: Check the return value of pti_user_pagetable_walk_p4d() (diff) | |
| download | kernel-qcow2-linux-8c934e01a7ce685d98e970880f5941d79272c654.tar.gz kernel-qcow2-linux-8c934e01a7ce685d98e970880f5941d79272c654.tar.xz kernel-qcow2-linux-8c934e01a7ce685d98e970880f5941d79272c654.zip | |
x86/pti: Check the return value of pti_user_pagetable_walk_pmd()
pti_user_pagetable_walk_pmd() can return NULL, so the return value should
be checked to prevent a NULL pointer dereference.
Add the check and a warning when the PMD allocation fails.
Signed-off-by: Jiang Biao <jiang.biao2@zte.com.cn>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: dave.hansen@linux.intel.com
Cc: luto@kernel.org
Cc: hpa@zytor.com
Cc: albcamus@gmail.com
Cc: zhong.weidong@zte.com.cn
Link: https://lkml.kernel.org/r/1532045192-49622-2-git-send-email-jiang.biao2@zte.com.cn
Diffstat (limited to 'arch/h8300/kernel/ptrace.c')
0 files changed, 0 insertions, 0 deletions