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authorLinus Torvalds <torvalds@linux-foundation.org>2022-06-17 14:57:42 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2022-06-17 14:57:42 -0500
commit93d17c1c8c1cc987aad378d5266d99e46efca43c (patch)
treea8cffc099e31bbdc254a492df2a3ff18445299de /kernel/panic.c
parentef06e68290b2b1b674950da276d6f7724e0b9874 (diff)
parent38335cc5ffafa111210ad6bbe5a63a87db38ee68 (diff)
Merge tag 'printk-for-5.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux
Pull printk fixes from Petr Mladek: "Make the global console_sem available for CPU that is handling panic() or shutdown. This is an old problem when an existing console lock owner might block console output, but it became more visible with the kthreads" * tag 'printk-for-5.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux: printk: Wait for the global console lock when the system is going down printk: Block console kthreads when direct printing will be required
Diffstat (limited to 'kernel/panic.c')
-rw-r--r--kernel/panic.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/panic.c b/kernel/panic.c
index a3c758dba15a..4cf13c37bd08 100644
--- a/kernel/panic.c
+++ b/kernel/panic.c
@@ -297,6 +297,7 @@ void panic(const char *fmt, ...)
* unfortunately means it may not be hardened to work in a
* panic situation.
*/
+ try_block_console_kthreads(10000);
smp_send_stop();
} else {
/*
@@ -304,6 +305,7 @@ void panic(const char *fmt, ...)
* kmsg_dump, we will need architecture dependent extra
* works in addition to stopping other CPUs.
*/
+ try_block_console_kthreads(10000);
crash_smp_send_stop();
}