Greg Kroah-Hartman 0bd665240a debugfs: be more robust at handling improper input in debugfs_lookup() ... commit bc6de804d36b3709d54fa22bd128cbac91c11526 upstream. debugfs_lookup() doesn't like it if it is passed an illegal name pointer, or if the filesystem isn't even initialized yet. If either of these happen, it will crash the system, so fix it up by properly testing for valid input and that we are up and running before trying to find a file in the filesystem. Cc: "Rafael J. Wysocki" <rafael@kernel.org> Cc: stable <stable@vger.kernel.org> Reported-by: Michael Walle <michael@walle.cc> Tested-by: Michael Walle <michael@walle.cc> Tested-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20210218100818.3622317-1-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2021-03-04 11:37:17 +01:00
..
file.c	debugfs: remove return value of debugfs_create_devm_seqfile()	2020-10-30 08:37:39 +01:00
inode.c	debugfs: be more robust at handling improper input in debugfs_lookup()	2021-03-04 11:37:17 +01:00
internal.h	debugfs: Add access restriction option	2020-07-23 17:10:25 +02:00
Makefile	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00