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ba1dd7ac73
damon_sysfs_scheme_rm_dirs() puts dests directory kobject before removing
its internal files. Sincee putting the kobject frees its container
struct, and the internal files removal accesses the container,
use-after-free happens. Fix it by putting the reference _after_ removing
the files.
Link: https://lkml.kernel.org/r/20250816165559.2601-1-sj@kernel.org
Fixes: 2cd0bf85a2 ("mm/damon/sysfs-schemes: implement DAMOS action destinations directory")
Signed-off-by: SeongJae Park <sj@kernel.org>
Reported-by: Alexandre Ghiti <alex@ghiti.fr>
Closes: https://lore.kernel.org/2d39a734-320d-4341-8f8a-4019eec2dbf2@ghiti.fr
Tested-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>