Petr Mladek d551afc258 printk: Use scnprintf() to print the message about the dropped messages on a console ... Use scnprintf() for printing the message about dropped messages on a console. It returns the really written length of the message. It prevents potential buffer overflow when the returned length is later used to copy the buffer content. Note that the previous code was safe because the scratch buffer was big enough and the message always fit in. But scnprintf() makes it more safe, definitely. Reported-by: coverity-bot <keescook+coverity-bot@chromium.org> Addresses-Coverity-ID: 1530570 ("Memory - corruptions") Fixes: c4fcc617e1 ("printk: introduce console_prepend_dropped() for dropped messages") Link: https://lore.kernel.org/r/202301131544.D9E804CCD@keescook Reviewed-by: John Ogness <john.ogness@linutronix.de> Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org> Signed-off-by: Petr Mladek <pmladek@suse.com> Link: https://lore.kernel.org/r/20230117161031.15499-1-pmladek@suse.com		2023-01-18 10:13:50 +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
index.c	printk: avoid -Wsometimes-uninitialized warning	2021-10-04 10:28:43 +02:00
internal.h	printk: adjust string limit macros	2023-01-11 15:35:12 +01:00
Makefile	printk: move printk sysctl to printk/sysctl.c	2022-01-22 08:33:35 +02:00
printk_ringbuffer.c	printk: fix a typo of comment	2022-11-22 12:10:15 +01:00
printk_ringbuffer.h	printk: ringbuffer: Improve prb_next_seq() performance	2022-01-26 16:00:32 +01:00
printk_safe.c	Revert "printk: Wait for the global console lock when the system is going down"	2022-06-23 18:41:40 +02:00
printk.c	printk: Use scnprintf() to print the message about the dropped messages on a console	2023-01-18 10:13:50 +01:00
sysctl.c	printk: Fix incorrect __user type in proc_dointvec_minmax_sysadmin()	2022-02-03 11:27:38 -08:00