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| author | Masami Hiramatsu <[email protected]> | 2020-05-12 08:02:56 +0000 |
|---|---|---|
| committer | Steven Rostedt (VMware) <[email protected]> | 2020-06-17 01:21:01 +0000 |
| commit | 1a0aa991a6274161c95a844c58cfb801d681eb59 (patch) | |
| tree | a90f727b5b0b1406ffbc7ae50cc90ec1c0bb4f2e /samples/ftrace/sample-trace-array.c | |
| parent | kprobes: Use non RCU traversal APIs on kprobe_tables if possible (diff) | |
| download | kernel-1a0aa991a6274161c95a844c58cfb801d681eb59.tar.gz kernel-1a0aa991a6274161c95a844c58cfb801d681eb59.zip | |
kprobes: Fix to protect kick_kprobe_optimizer() by kprobe_mutex
In kprobe_optimizer() kick_kprobe_optimizer() is called
without kprobe_mutex, but this can race with other caller
which is protected by kprobe_mutex.
To fix that, expand kprobe_mutex protected area to protect
kick_kprobe_optimizer() call.
Link: http://lkml.kernel.org/r/158927057586.27680.5036330063955940456.stgit@devnote2
Fixes: cd7ebe2298ff ("kprobes: Use text_poke_smp_batch for optimizing")
Cc: Ingo Molnar <[email protected]>
Cc: "Gustavo A . R . Silva" <[email protected]>
Cc: Anders Roxell <[email protected]>
Cc: "Naveen N . Rao" <[email protected]>
Cc: Anil S Keshavamurthy <[email protected]>
Cc: David Miller <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Ziqian SUN <[email protected]>
Cc: [email protected]
Signed-off-by: Masami Hiramatsu <[email protected]>
Signed-off-by: Steven Rostedt (VMware) <[email protected]>
Diffstat (limited to 'samples/ftrace/sample-trace-array.c')
0 files changed, 0 insertions, 0 deletions