damon/sysfs: fix possible memleak on damon_sysfs_add_target
authorLevi Yun <ppbuk5246@gmail.com>
Mon, 26 Sep 2022 16:06:11 +0000 (16:06 +0000)
committerAndrew Morton <akpm@linux-foundation.org>
Sat, 1 Oct 2022 01:46:31 +0000 (18:46 -0700)
commit1c8e2349f2d033f634d046063b704b2ca6c46972
tree4ff15dfb902bdb4bd054daa918396fcf0ba326a7
parent30c19366636f72515679aa10dad61a4d988d4c9a
damon/sysfs: fix possible memleak on damon_sysfs_add_target

When damon_sysfs_add_target couldn't find proper task, New allocated
damon_target structure isn't registered yet, So, it's impossible to free
new allocated one by damon_sysfs_destroy_targets.

By calling damon_add_target as soon as allocating new target, Fix this
possible memory leak.

Link: https://lkml.kernel.org/r/20220926160611.48536-1-sj@kernel.org
Fixes: a61ea561c871 ("mm/damon/sysfs: link DAMON for virtual address spaces monitoring")
Signed-off-by: Levi Yun <ppbuk5246@gmail.com>
Signed-off-by: SeongJae Park <sj@kernel.org>
Reviewed-by: SeongJae Park <sj@kernel.org>
Cc: <stable@vger.kernel.org> [5.17.x]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
mm/damon/sysfs.c