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| author | Kent Overstreet <kent.overstreet@gmail.com> | 2022-04-10 14:36:10 -0400 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@gmail.com> | 2022-04-10 14:41:48 -0400 |
| commit | ad72553649c848bb907b294429d136f0069282b6 (patch) | |
| tree | 49f92f2c2f53e54603fbba0af507b1081ee42221 | |
| parent | 042e242e6294786bbfe1eaf1340a435b5233eed7 (diff) | |
bcachefs: Fix a null ptr deref
We start doing allocations before the GC thread is created, which means
we need to check for that to avoid a null ptr deref.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
| -rw-r--r-- | fs/bcachefs/btree_gc.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/bcachefs/btree_gc.h b/fs/bcachefs/btree_gc.h index 8de54005e4ea..95d803b5743d 100644 --- a/fs/bcachefs/btree_gc.h +++ b/fs/bcachefs/btree_gc.h @@ -105,7 +105,8 @@ static inline bool gc_visited(struct bch_fs *c, struct gc_pos pos) static inline void bch2_do_gc_gens(struct bch_fs *c) { atomic_inc(&c->kick_gc); - wake_up_process(c->gc_thread); + if (c->gc_thread) + wake_up_process(c->gc_thread); } #endif /* _BCACHEFS_BTREE_GC_H */ |