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bcachefs: Add missing synchronize_srcu_expedited() call when shutting down

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We use the polling interface to srcu for tracking pending frees; when
shutting down we don't need to wait for an srcu barrier to free them,
but SRCU still gets confused if we shutdown with an outstanding grace
period.

Reported-by: syzbot+6a038377f0a594d7d44e@syzkaller.appspotmail.com
Reported-by: syzbot+0ece6edfd05ed20e32d9@syzkaller.appspotmail.com
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2024-06-08 17:36:24 -04:00
parent 9432e90df1
commit b799220092
1 changed files with 3 additions and 1 deletions
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4
fs/bcachefs/btree_iter.c
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@ -3401,8 +3401,10 @@ void bch2_fs_btree_iter_exit(struct bch_fs *c)
bch2_time_stats_exit(&s->lock_hold_times);
}
if (c->btree_trans_barrier_initialized)
if (c->btree_trans_barrier_initialized) {
synchronize_srcu_expedited(&c->btree_trans_barrier);
cleanup_srcu_struct(&c->btree_trans_barrier);
}
mempool_exit(&c->btree_trans_mem_pool);
mempool_exit(&c->btree_trans_pool);
}