Re: [syzbot] [gfs2?] general protection fault in gfs2_remove_from_journal (2)

[Qing Wang]

#syz test

diff --git a/fs/gfs2/meta_io.c b/fs/gfs2/meta_io.c
index e4356198d8d8..3a60a8bd80f7 100644
--- a/fs/gfs2/meta_io.c
+++ b/fs/gfs2/meta_io.c
@@ -349,7 +349,8 @@ void gfs2_remove_from_journal(struct buffer_head *bh, int meta)
 	if (test_clear_buffer_pinned(bh)) {
 		trace_gfs2_pin(bd, 0);
 		atomic_dec(&sdp->sd_log_pinned);
-		list_del_init(&bd->bd_list);
+		if (bd)
+			list_del_init(&bd->bd_list);
 		if (meta == REMOVE_META)
 			tr->tr_num_buf_rm++;
 		else