From: Kent Overstreet <kent.overstreet@linux.dev>
Date: Sun, 23 Jun 2024 16:07:07 +0000 (-0400)
Subject: bcachefs: Fix null ptr deref in journal_pins_to_text()
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=d6b52f6828e6d9bb1fe35f889e1a9d0dcff0e21d;p=users%2Fwilly%2Fxarray.git

bcachefs: Fix null ptr deref in journal_pins_to_text()

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
---

diff --git a/fs/bcachefs/journal.c b/fs/bcachefs/journal.c
index dac2f498ae8b..13669dd0e375 100644
--- a/fs/bcachefs/journal.c
+++ b/fs/bcachefs/journal.c
@@ -1521,6 +1521,11 @@ bool bch2_journal_seq_pins_to_text(struct printbuf *out, struct journal *j, u64
 	struct journal_entry_pin *pin;
 
 	spin_lock(&j->lock);
+	if (!test_bit(JOURNAL_running, &j->flags)) {
+		spin_unlock(&j->lock);
+		return true;
+	}
+
 	*seq = max(*seq, j->pin.front);
 
 	if (*seq >= j->pin.back) {