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| author | Jiang Biao <[email protected]> | 2018-07-20 00:06:31 +0000 |
|---|---|---|
| committer | Thomas Gleixner <[email protected]> | 2018-07-20 05:07:39 +0000 |
| commit | b2b7d986a89b6c94b1331a909de1217214fb08c1 (patch) | |
| tree | 9cce6d8e6a0860e7476f3b57172ded3e8159826b /tools/perf/scripts/python/syscall-counts-by-pid.py | |
| parent | x86/entry/32: Add debug code to check entry/exit CR3 (diff) | |
| download | kernel-b2b7d986a89b6c94b1331a909de1217214fb08c1.tar.gz kernel-b2b7d986a89b6c94b1331a909de1217214fb08c1.zip | |
x86/pti: Check the return value of pti_user_pagetable_walk_p4d()
pti_user_pagetable_walk_p4d() can return NULL, so the return value should
be checked to prevent a NULL pointer dereference.
Add the check and a warning when the P4D allocation fails.
Signed-off-by: Jiang Biao <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Link: https://lkml.kernel.org/r/[email protected]
Diffstat (limited to 'tools/perf/scripts/python/syscall-counts-by-pid.py')
0 files changed, 0 insertions, 0 deletions