The patch titled
Subject: printk-add-kernel-parameter-to-control-writes-to-dev-kmsg-update
has been added to the -mm tree. Its filename is
printk-add-kernel-parameter-to-control-writes-to-dev-kmsg-update.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/printk-add-kernel-parameter-to-control-writes-to-dev-kmsg-update.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/printk-add-kernel-parameter-to-control-writes-to-dev-kmsg-update.patch
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------------------------------------------------------
From: Borislav Petkov <bp@xxxxxxx>
Subject: printk-add-kernel-parameter-to-control-writes-to-dev-kmsg-update
Thanks for catching this, here's an updated 2/2 patch with the above
integrated and the SYSTEM_BOOTING check removed because we set
system_state to SYSTEM_RUNNING before we start init.
Link: http://lkml.kernel.org/r/20160719072344.GC25563@xxxxxxxxxxx
Signed-off-by: Borislav Petkov <bp@xxxxxxx>
Cc: Dave Young <dyoung@xxxxxxxxxx>
Cc: Franck Bui <fbui@xxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
Cc: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/printk/printk.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff -puN kernel/printk/printk.c~printk-add-kernel-parameter-to-control-writes-to-dev-kmsg-update kernel/printk/printk.c
--- a/kernel/printk/printk.c~printk-add-kernel-parameter-to-control-writes-to-dev-kmsg-update
+++ a/kernel/printk/printk.c
@@ -117,8 +117,7 @@ static int __control_devkmsg(char *str)
devkmsg_log = DEVKMSG_LOG_MASK_DEFAULT;
return 9;
}
- else
- return -EINVAL;
+ return -EINVAL;
}
static int __init control_devkmsg(char *str)
@@ -741,8 +740,8 @@ static ssize_t devkmsg_write(struct kioc
if (devkmsg_log & DEVKMSG_LOG_MASK_OFF)
return len;
- /* Ratelimit when not explicitly enabled or when we're not booting. */
- if ((system_state != SYSTEM_BOOTING) && !(devkmsg_log & DEVKMSG_LOG_MASK_ON)) {
+ /* Ratelimit when not explicitly enabled. */
+ if (!(devkmsg_log & DEVKMSG_LOG_MASK_ON)) {
if (!___ratelimit(&user->rs, current->comm))
return ret;
}
_
Patches currently in -mm which might be from bp@xxxxxxx are
ratelimit-extend-to-print-suppressed-messages-on-release.patch
printk-add-kernel-parameter-to-control-writes-to-dev-kmsg.patch
printk-add-kernel-parameter-to-control-writes-to-dev-kmsg-update.patch
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