| commit | 9e4ad971bf0a551b3922c94eda1f361be04dcde2 | [log] [tgz] |
|---|---|---|
| author | Paul E. McKenney <paulmck@kernel.org> | Sat Jul 04 09:37:55 2020 -0700 |
| committer | Paul E. McKenney <paulmck@kernel.org> | Sat Jul 04 09:37:55 2020 -0700 |
| tree | 1be01f486944952530a2c7f1732f3741833650a5 | |
| parent | 450adea4d4bf39c82eb3707e57750685f632d783 [diff] |
squash! kernel/smp: Provide CSD lock timeout diagnostics [ paulmck: Fix for syzbot+0f719294463916a3fc0e@syzkaller.appspotmail.com ] Link: https://lore.kernel.org/lkml/00000000000042f21905a991ecea@google.com Link: https://lore.kernel.org/lkml/0000000000002ef21705a9933cf3@google.com Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
diff --git a/kernel/smp.c b/kernel/smp.c index bde4c15..78b602c 100644 --- a/kernel/smp.c +++ b/kernel/smp.c
@@ -285,9 +285,9 @@ static int generic_exec_single(int cpu, call_single_data_t *csd) * We can unlock early even for the synchronous on-stack case, * since we're doing this from the same CPU.. */ + csd_lock_record(csd); csd_unlock(csd); local_irq_save(flags); - csd_lock_record(csd); func(info); csd_lock_record(NULL); local_irq_restore(flags);