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authorLinus Torvalds <torvalds@linux-foundation.org>2018-03-01 10:06:39 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2018-03-01 10:06:39 -0800
commit7bec4a96466286b0ad00e6394bbb94c1b3fd98f3 (patch)
tree4f5bc0db50aa0f790157446a944cfb6beba2b662
parent16453c9cf855d088d5598cedb75229e9056b12b3 (diff)
parentc14376de3a1befa70d9811ca2872d47367b48767 (diff)
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printk
Pull printk fix from Petr Mladek: "Make sure that we wake up userspace loggers. This fixes a race introduced by the console waiter logic during this merge window" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printk: printk: Wake klogd when passing console_lock owner
-rw-r--r--kernel/printk/printk.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index fc1123583fa6..f274fbef821d 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -2397,7 +2397,7 @@ skip:
if (console_lock_spinning_disable_and_check()) {
printk_safe_exit_irqrestore(flags);
- return;
+ goto out;
}
printk_safe_exit_irqrestore(flags);
@@ -2430,6 +2430,7 @@ skip:
if (retry && console_trylock())
goto again;
+out:
if (wake_klogd)
wake_up_klogd();
}