bh = 19 (type: exp=4, found=1) function = gfs2_meta_buffer, file = fs/gfs2/meta_io.c, line = 493 gfs2: fsid=syz:syz.s: about to withdraw this file system ------------[ cut here ]------------ kernel BUG at fs/gfs2/util.c:333! Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 4701 Comm: syz.0.16 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : gfs2_withdraw+0x1074/0x1188 fs/gfs2/util.c:333 lr : gfs2_withdraw+0x1074/0x1188 fs/gfs2/util.c:333 sp : ffff800020016f20 x29: ffff800020017020 x28: 1fffe0001a27d857 x27: ffff0000d13ec2bc x26: dfff800000000000 x25: ffff700004002df0 x24: ffff0000d13ec0a8 x23: 1fffe0001a27d868 x22: ffff800020016f80 x21: ffff8000118b88e0 x20: 000000000000e74f x19: ffff0000d13ec000 x18: 0000000000000001 x17: 0000000000000000 x16: ffff80001135f958 x15: 0000000000000012 x14: 0000000000000001 x13: 1fffe000341d09ab x12: 0000000000000000 x11: ff8080000a175804 x10: 0000000000000000 x9 : ffff80000a175804 x8 : ffff0000d11ab680 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff800020016838 x4 : ffff80001447f520 x3 : ffff80000850fcd0 x2 : 0000000000000001 x1 : 0000000000000004 x0 : 0000000000000000 Call trace: gfs2_withdraw+0x1074/0x1188 fs/gfs2/util.c:333 gfs2_metatype_check_ii+0x8c/0xac fs/gfs2/util.c:512 gfs2_metatype_check_i fs/gfs2/util.h:129 [inline] gfs2_meta_buffer+0x25c/0x2f0 fs/gfs2/meta_io.c:493 gfs2_meta_inode_buffer fs/gfs2/meta_io.h:70 [inline] gfs2_inode_refresh+0xb0/0xeb0 fs/gfs2/glops.c:493 inode_go_lock+0x100/0x390 fs/gfs2/glops.c:522 do_promote+0x660/0xa54 fs/gfs2/glock.c:507 finish_xmote+0x45c/0xb3c fs/gfs2/glock.c:678 do_xmote+0x668/0xf64 fs/gfs2/glock.c:824 run_queue+0x400/0x694 fs/gfs2/glock.c:872 gfs2_glock_nq+0x80c/0x13d0 fs/gfs2/glock.c:1534 gfs2_glock_nq_init fs/gfs2/glock.h:246 [inline] check_journal_clean+0x12c/0x2f8 fs/gfs2/util.c:60 init_journal+0x1344/0x1dfc fs/gfs2/ops_fstype.c:832 init_inodes+0xe0/0x2e0 fs/gfs2/ops_fstype.c:891 gfs2_fill_super+0x129c/0x1a9c fs/gfs2/ops_fstype.c:1249 get_tree_bdev+0x35c/0x54c fs/super.c:1325 gfs2_get_tree+0x58/0x1b8 fs/gfs2/ops_fstype.c:1332 vfs_get_tree+0x90/0x278 fs/super.c:1530 do_new_mount+0x228/0x804 fs/namespace.c:3034 path_mount+0x57c/0xfe8 fs/namespace.c:3364 do_mount fs/namespace.c:3377 [inline] __do_sys_mount fs/namespace.c:3585 [inline] __se_sys_mount fs/namespace.c:3562 [inline] __arm64_sys_mount+0x488/0x5f8 fs/namespace.c:3562 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x28c arch/arm64/kernel/syscall.c:52 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x5c/0x140 arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1d0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Code: 910ce260 979b6a5a 17fffef1 978c3990 (d4210000) ---[ end trace 59c5ee1de5e4f135 ]---