From: Qing Wang <wangqing7171@gmail.com>
To: syzbot+cff8e1b82d7911dd051c@syzkaller.appspotmail.com
Cc: agruenba@redhat.com, gfs2@lists.linux.dev,
linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] [gfs2?] general protection fault in gfs2_remove_from_journal (2)
Date: Fri, 13 Feb 2026 15:41:35 +0800 [thread overview]
Message-ID: <20260213074135.2389369-1-wangqing7171@gmail.com> (raw)
In-Reply-To: <6978bb60.050a0220.c9109.001c.GAE@google.com>
#syz test
diff --git a/fs/gfs2/meta_io.c b/fs/gfs2/meta_io.c
index e4356198d8d8..8c3d0a83cb98 100644
--- a/fs/gfs2/meta_io.c
+++ b/fs/gfs2/meta_io.c
@@ -346,16 +346,16 @@ void gfs2_remove_from_journal(struct buffer_head *bh, int meta)
struct gfs2_trans *tr = current->journal_info;
int was_pinned = 0;
- if (test_clear_buffer_pinned(bh)) {
- trace_gfs2_pin(bd, 0);
- atomic_dec(&sdp->sd_log_pinned);
- list_del_init(&bd->bd_list);
- if (meta == REMOVE_META)
- tr->tr_num_buf_rm++;
- else
- tr->tr_num_databuf_rm++;
- set_bit(TR_TOUCHED, &tr->tr_flags);
- was_pinned = 1;
+ if (test_clear_buffer_pinned(bh) && bd) {
+ trace_gfs2_pin(bd, 0);
+ atomic_dec(&sdp->sd_log_pinned);
+ list_del_init(&bd->bd_list);
+ if (meta == REMOVE_META)
+ tr->tr_num_buf_rm++;
+ else
+ tr->tr_num_databuf_rm++;
+ set_bit(TR_TOUCHED, &tr->tr_flags);
+ was_pinned = 1;
brelse(bh);
}
if (bd) {
next prev parent reply other threads:[~2026-02-13 7:41 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-12-12 1:45 [syzbot] [gfs2?] general protection fault in gfs2_remove_from_journal (2) syzbot
2026-01-27 13:19 ` syzbot
2026-02-13 7:41 ` Qing Wang [this message]
2026-02-13 7:58 ` syzbot
2026-02-13 10:00 ` Qing Wang
2026-02-13 10:18 ` syzbot
2026-02-13 9:21 ` Qing Wang
2026-02-13 9:38 ` syzbot
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