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linux-stable/mm/damon
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SeongJae Park 8468b48661 mm/damon/sysfs-schemes: skip stats update if the scheme directory is removed 
A DAMON sysfs interface user can start DAMON with a scheme, remove the
sysfs directory for the scheme, and then ask update of the scheme's stats.
Because the schemes stats update logic isn't aware of the situation, it
results in an invalid memory access.  Fix the bug by checking if the
scheme sysfs directory exists.

Link: https://lkml.kernel.org/r/20221114175552.1951-1-sj@kernel.org
Fixes: 0ac32b8aff ("mm/damon/sysfs: support DAMOS stats")
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: <stable@vger.kernel.org>	[v5.18]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-11-22 18:50:42 -08:00
..
core-test.h mm/damon/core-test: test damon_set_regions 2022-10-03 14:03:06 -07:00
core.c - Alistair Popple has a series which addresses a race which causes page 2022-10-14 12:28:43 -07:00
dbgfs-test.h mm/damon/dbgfs-test: fix is_target_id() change 2022-03-22 15:57:12 -07:00
dbgfs.c mm/damon/dbgfs: check if rm_contexts input is for a real context 2022-11-08 15:57:25 -08:00
Kconfig mm/damon/Kconfig: notify debugfs deprecation plan 2022-10-03 14:03:06 -07:00
lru_sort.c mm/damon: deduplicate damon_{reclaim,lru_sort}_apply_parameters() 2022-10-03 14:03:31 -07:00
Makefile mm/damon: introduce DAMON-based LRU-lists Sorting 2022-07-03 18:08:43 -07:00
modules-common.h mm/damon/modules-common: implement damos time quota params generator 2022-10-03 14:03:13 -07:00
ops-common.c mm/damon: rename damon_pageout_score() to damon_cold_score() 2022-10-03 14:03:31 -07:00
ops-common.h mm/damon: rename damon_pageout_score() to damon_cold_score() 2022-10-03 14:03:31 -07:00
paddr.c mm/damon: rename damon_pageout_score() to damon_cold_score() 2022-10-03 14:03:31 -07:00
reclaim.c mm/damon: deduplicate damon_{reclaim,lru_sort}_apply_parameters() 2022-10-03 14:03:31 -07:00
sysfs.c mm/damon/sysfs-schemes: skip stats update if the scheme directory is removed 2022-11-22 18:50:42 -08:00
vaddr-test.h damon: convert __damon_va_three_regions to use the VMA iterator 2022-09-26 19:46:16 -07:00
vaddr.c mm/damon: use damon_sz_region() in appropriate place 2022-10-12 18:51:49 -07:00