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| author | Kent Overstreet <kent.overstreet@linux.dev> | 2025-04-17 22:38:14 -0400 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@linux.dev> | 2025-04-20 19:41:38 -0400 |
| commit | aa6a591f0fd740e27c54110f8425b53133ad4165 (patch) | |
| tree | dacf5fba06ba554015c301948be669df101d2f4c /fs/bcachefs/snapshot.c | |
| parent | bcachefs: Fix early startup error path (diff) | |
| download | linux-aa6a591f0fd740e27c54110f8425b53133ad4165.tar.gz linux-aa6a591f0fd740e27c54110f8425b53133ad4165.zip | |
bcachefs: Fix null ptr deref in bch2_snapshot_tree_oldest_subvol()
Reported-by: syzbot+baee8591f336cab0958b@syzkaller.appspotmail.com
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Diffstat (limited to 'fs/bcachefs/snapshot.c')
| -rw-r--r-- | fs/bcachefs/snapshot.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/bcachefs/snapshot.c b/fs/bcachefs/snapshot.c index b7de29aed839..fec569c7deb1 100644 --- a/fs/bcachefs/snapshot.c +++ b/fs/bcachefs/snapshot.c @@ -396,7 +396,7 @@ u32 bch2_snapshot_tree_oldest_subvol(struct bch_fs *c, u32 snapshot_root) u32 subvol = 0, s; rcu_read_lock(); - while (id) { + while (id && bch2_snapshot_exists(c, id)) { s = snapshot_t(c, id)->subvol; if (s && (!subvol || s < subvol)) |