John Ogness bb07b16c44 printk: limit second loop of syslog_print_all ... The second loop of syslog_print_all() subtracts lengths that were added in the first loop. With commit b031a684bf ("printk: remove logbuf_lock writer-protection of ringbuffer") it is possible that records are (over)written during syslog_print_all(). This allows the possibility of the second loop subtracting lengths that were never added in the first loop. This situation can result in syslog_print_all() filling the buffer starting from a later record, even though there may have been room to fit the earlier record(s) as well. Fixes: b031a684bf ("printk: remove logbuf_lock writer-protection of ringbuffer") Signed-off-by: John Ogness <john.ogness@linutronix.de> Reviewed-by: Petr Mladek <pmladek@suse.com> Signed-off-by: Petr Mladek <pmladek@suse.com> Link: https://lore.kernel.org/r/20210303101528.29901-4-john.ogness@linutronix.de		2021-03-08 11:42:50 +01:00
..
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	Merge branch 'printk-rework' into for-linus	2021-01-21 16:06:21 +01:00
printk_ringbuffer.h	printk: rectify kernel-doc for prb_rec_init_wr()	2021-01-26 11:17:51 +01:00
printk_safe.c	printk: fix deadlock when kernel panic	2021-02-10 13:57:06 +01:00
printk.c	printk: limit second loop of syslog_print_all	2021-03-08 11:42:50 +01:00