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![]() DAMON debugfs interface iterates current monitoring targets in
'dbgfs_target_ids_read()' while holding the corresponding
'kdamond_lock'. However, it also destructs the monitoring targets in
'dbgfs_before_terminate()' without holding the lock. This can result in
a use_after_free bug. This commit avoids the race by protecting the
destruction with the corresponding 'kdamond_lock'.
Link: https://lkml.kernel.org/r/20211221094447.2241-1-sj@kernel.org
Reported-by: Sangwoo Bae <sangwoob@amazon.com>
Fixes:
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.. | ||
core-test.h | ||
core.c | ||
dbgfs-test.h | ||
dbgfs.c | ||
Kconfig | ||
Makefile | ||
paddr.c | ||
prmtv-common.c | ||
prmtv-common.h | ||
reclaim.c | ||
vaddr-test.h | ||
vaddr.c |