diff options
| author | Yu Zhao <yuzhao@google.com> | 2023-06-19 13:38:21 -0600 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-06-23 16:10:12 -0700 |
| commit | 814bc1de03ea4361101408e63a68e4b82aef22cb (patch) | |
| tree | b98bd538c2a32c7de46bf744c2ef7a07e453bae9 /mm/filemap.c | |
| parent | 0518dbe97fe629fea255318841cf3ef1b4532d66 (diff) | |
mm/mglru: make memcg_lru->lock irq safe
lru_gen_rotate_memcg() can happen in softirq if memory.soft_limit_in_bytes
is set. This requires memcg_lru->lock to be irq safe. Lockdep warns on
this.
This problem only affects memcg v1.
Link: https://lkml.kernel.org/r/20230619193821.2710944-1-yuzhao@google.com
Fixes: e4dde56cd208 ("mm: multi-gen LRU: per-node lru_gen_folio lists")
Signed-off-by: Yu Zhao <yuzhao@google.com>
Reported-by: syzbot+87c490fd2be656269b6a@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=87c490fd2be656269b6a
Reviewed-by: Yosry Ahmed <yosryahmed@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/filemap.c')
0 files changed, 0 insertions, 0 deletions