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| author | Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | 2023-01-02 10:12:16 -0500 |
|---|---|---|
| committer | Borislav Petkov (AMD) <bp@alien8.de> | 2023-01-02 16:34:12 +0100 |
| commit | bbd0b031509b880b4e9a880bb27ca2a30ad081ab (patch) | |
| tree | 3c16b06a9c0bc653348674cbc9dd5b743897f660 /tools/perf/scripts/python/stackcollapse.py | |
| parent | cputime: remove cputime_to_nsecs fallback (diff) | |
| download | linux-bbd0b031509b880b4e9a880bb27ca2a30ad081ab.tar.gz linux-bbd0b031509b880b4e9a880bb27ca2a30ad081ab.zip | |
sched/rseq: Fix concurrency ID handling of usermodehelper kthreads
sched_mm_cid_after_execve() does not expect NULL t->mm, but it may happen
if a usermodehelper kthread fails when attempting to execute a binary.
sched_mm_cid_fork() can be issued from a usermodehelper kthread, which
has t->flags PF_KTHREAD set.
Fixes: af7f588d8f73 ("sched: Introduce per-memory-map concurrency ID")
Reported-by: kernel test robot <yujie.liu@intel.com>
Reported-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/oe-lkp/202212301353.5c959d72-yujie.liu@intel.com
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions