diff mbox series

[30/30] um: Avoid duplicate call to kmsg_dump()

Message ID 20220427224924.592546-31-gpiccoli@igalia.com (mailing list archive)
State Not Applicable
Headers show
Series The panic notifiers refactor | expand

Checks

Context Check Description
netdev/tree_selection success Not a local patch, async

Commit Message

Guilherme G. Piccoli April 27, 2022, 10:49 p.m. UTC 
Currently the panic notifier panic_exit() calls kmsg_dump() and
some console flushing routines - this makes sense since such
panic notifier exits UserMode Linux and never returns.

Happens that after a panic refactor, kmsg_dump() is now always
called *before* the pre_reboot list of panic notifiers, in which
panic_exit() belongs, leading to a double call situation.

This patch changes that by removing such call from the panic
notifier, but leaving the console flushing calls since the
pre_reboot list still runs before console flushing on panic().

Cc: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: Richard Weinberger <richard@nod.at>
Signed-off-by: Guilherme G. Piccoli <gpiccoli@igalia.com>
---
 arch/um/kernel/um_arch.c | 1 -
 1 file changed, 1 deletion(-)
diff mbox series

Patch

diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c
index fc6e443299da..651310e3e86f 100644
--- a/arch/um/kernel/um_arch.c
+++ b/arch/um/kernel/um_arch.c
@@ -241,7 +241,6 @@  static void __init uml_postsetup(void)
 static int panic_exit(struct notifier_block *self, unsigned long unused1,
 		      void *unused2)
 {
-	kmsg_dump(KMSG_DUMP_PANIC);
 	bust_spinlocks(1);
 	bust_spinlocks(0);
 	uml_exitcode = 1;