bh = 2073 (magic number) function = gfs2_meta_buffer, file = fs/gfs2/meta_io.c, line = 492 gfs2: fsid=syz:syz.s: about to withdraw this file system ------------[ cut here ]------------ kernel BUG at fs/gfs2/util.c:352! Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 8237 Comm: syz.5.945 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : gfs2_withdraw+0x1254/0x13a8 fs/gfs2/util.c:352 lr : gfs2_withdraw+0x1254/0x13a8 fs/gfs2/util.c:352 sp : ffff800021a06fc0 x29: ffff800021a070d0 x28: ffff700004340e04 x27: dfff800000000000 x26: ffff800011eec720 x25: ffff800021a07020 x24: 1fffe0001875f057 x23: 000000000001a687 x22: ffff0000c3af8340 x21: ffff0000c3af80a8 x20: ffff0000c3af82bc x19: ffff0000c3af8000 x18: ffff800011abbcc0 x17: 1fffe00033edbb7e x16: ffff8000082d22e0 x15: 0000000040000000 x14: 0000000000000002 x13: 1ffff00002a180b1 x12: 0000000000080000 x11: 00000000000201d0 x10: ffff8000345f2000 x9 : ffff80000a206894 x8 : 00000000000201d1 x7 : ffff800008251e10 x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : ffff80000852e158 x2 : 0000000000000001 x1 : 0000000000000004 x0 : 0000000000000000 Call trace: gfs2_withdraw+0x1254/0x13a8 fs/gfs2/util.c:352 gfs2_meta_check_ii+0x80/0x9c fs/gfs2/util.c:511 gfs2_metatype_check_i fs/gfs2/util.h:126 [inline] gfs2_meta_buffer+0x228/0x2ec fs/gfs2/meta_io.c:492 gfs2_meta_inode_buffer fs/gfs2/meta_io.h:72 [inline] gfs2_inode_refresh+0xac/0xd54 fs/gfs2/glops.c:480 inode_go_instantiate+0x4c/0x68 fs/gfs2/glops.c:503 gfs2_instantiate+0x17c/0x2c4 fs/gfs2/glock.c:520 gfs2_glock_holder_ready fs/gfs2/glock.c:1333 [inline] gfs2_glock_wait+0x1b4/0x298 fs/gfs2/glock.c:1353 gfs2_glock_nq+0x8bc/0x11d4 fs/gfs2/glock.c:1596 gfs2_glock_nq_init fs/gfs2/glock.h:255 [inline] gfs2_lookupi+0x36c/0x58c fs/gfs2/inode.c:312 gfs2_lookup_simple+0xb0/0x100 fs/gfs2/inode.c:264 init_journal+0x17c/0x1e14 fs/gfs2/ops_fstype.c:745 init_inodes+0xe0/0x2d4 fs/gfs2/ops_fstype.c:889 gfs2_fill_super+0x122c/0x19ec fs/gfs2/ops_fstype.c:1246 get_tree_bdev+0x358/0x544 fs/super.c:1366 gfs2_get_tree+0x54/0x1b4 fs/gfs2/ops_fstype.c:1327 vfs_get_tree+0x90/0x274 fs/super.c:1573 do_new_mount+0x228/0x810 fs/namespace.c:3069 path_mount+0x5b4/0xe78 fs/namespace.c:3399 do_mount fs/namespace.c:3412 [inline] __do_sys_mount fs/namespace.c:3620 [inline] __se_sys_mount fs/namespace.c:3597 [inline] __arm64_sys_mount+0x49c/0x584 fs/namespace.c:3597 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x138 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Code: f9402be0 979b4202 17fffe95 978a6c02 (d4210000) ---[ end trace 0000000000000000 ]---