linux-stable/kernel/printk
Greg Kroah-Hartman 2e07fa2e30 kernel/printk/index.c: fix memory leak with using debugfs_lookup()
[ Upstream commit 55bf243c51 ]

When calling debugfs_lookup() the result must have dput() called on it,
otherwise the memory will leak over time.  To make things simpler, just
call debugfs_lookup_and_remove() instead which handles all of the logic
at once.

Cc: Chris Down <chris@chrisdown.name>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: John Ogness <john.ogness@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Reviewed-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/20230202151411.2308576-1-gregkh@linuxfoundation.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-03-11 13:57:32 +01:00
..
braille.c printk: Replace strncmp() with str_has_prefix() 2019-08-16 09:54:08 +02:00
braille.h
console_cmdline.h printk: Fix preferred console selection with multiple matches 2020-02-18 09:34:42 +01:00
index.c kernel/printk/index.c: fix memory leak with using debugfs_lookup() 2023-03-11 13:57:32 +01:00
internal.h Merge branch 'rework/printk_safe-removal' into for-linus 2021-08-30 16:36:10 +02:00
Makefile printk: Userspace format indexing support 2021-07-19 11:57:48 +02:00
printk.c printk: wake waiters for safe and NMI contexts 2022-06-09 10:22:49 +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: remove NMI tracking 2021-07-26 15:09:44 +02:00