linux-stable/fs/efivarfs
Ard Biesheuvel 2f195f0ecb efivarfs: revert "fix memory leak in efivarfs_create()"
[ Upstream commit ff04f3b6f2 ]

The memory leak addressed by commit fe5186cf12 is a false positive:
all allocations are recorded in a linked list, and freed when the
filesystem is unmounted. This leads to double frees, and as reported
by David, leads to crashes if SLUB is configured to self destruct when
double frees occur.

So drop the redundant kfree() again, and instead, mark the offending
pointer variable so the allocation is ignored by kmemleak.

Cc: Vamshi K Sthambamkadi <vamshi.k.sthambamkadi@gmail.com>
Fixes: fe5186cf12 ("efivarfs: fix memory leak in efivarfs_create()")
Reported-by: David Laight <David.Laight@aculab.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-12-02 08:34:44 +01:00
..
file.c efivarfs: Make efivarfs_file_ioctl() static 2016-05-07 07:06:13 +02:00
inode.c efivarfs: revert "fix memory leak in efivarfs_create()" 2020-12-02 08:34:44 +01:00
internal.h efi: Make efivarfs entries immutable by default 2016-02-10 16:25:52 +00:00
Kconfig fs: Make efivarfs a pseudo filesystem, built by default with EFI 2015-01-05 14:15:58 +00:00
Makefile
super.c efivarfs: revert "fix memory leak in efivarfs_create()" 2020-12-02 08:34:44 +01:00