John Ogness cf3cca5f15 printk: ringbuffer: fix line counting ... [ Upstream commit 668af87f995b6d6d09595c088ad1fb5dd9ff25d2 ] Counting text lines in a record simply involves counting the number of newline characters (+1). However, it is searching the full data block for newline characters, even though the text data can be (and often is) a subset of that area. Since the extra area in the data block was never initialized, the result is that extra newlines may be seen and counted. Restrict newline searching to the text data length. Fixes: b6cf8b3f33 ("printk: add lockless ringbuffer") Signed-off-by: John Ogness <john.ogness@linutronix.de> Reviewed-by: Petr Mladek <pmladek@suse.com> Acked-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Signed-off-by: Petr Mladek <pmladek@suse.com> Link: https://lore.kernel.org/r/20210113144234.6545-1-john.ogness@linutronix.de Signed-off-by: Sasha Levin <sashal@kernel.org>		2021-01-27 11:55:08 +01:00
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braille.c	printk: Replace strncmp() with str_has_prefix()	2019-08-16 09:54:08 +02:00
braille.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
console_cmdline.h	printk: Fix preferred console selection with multiple matches	2020-02-18 09:34:42 +01:00
internal.h	printk: move dictionary keys to dev_printk_info	2020-09-22 11:27:48 +02:00
Makefile	printk: add lockless ringbuffer	2020-07-10 08:48:19 +02:00
printk_ringbuffer.c	printk: ringbuffer: fix line counting	2021-01-27 11:55:08 +01:00
printk_ringbuffer.h	printk: avoid and/or handle record truncation	2020-09-30 13:30:28 +02:00
printk_safe.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2020-10-15 15:11:56 -07:00
printk.c	printk: finalize records with trailing newlines	2020-11-27 11:58:54 +01:00