bh = 19 (type: exp=4, found=256) function = gfs2_meta_buffer, file = fs/gfs2/meta_io.c, line = 493 gfs2: fsid=syz:syz.0: about to withdraw this file system ------------[ cut here ]------------ kernel BUG at fs/gfs2/util.c:341! Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 4636 Comm: syz.0.103 Not tainted 5.15.184-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : gfs2_withdraw+0x118c/0x129c fs/gfs2/util.c:341 lr : gfs2_withdraw+0x118c/0x129c fs/gfs2/util.c:341 sp : ffff80001fa46fc0 x29: ffff80001fa470e0 x28: 1fffe0001ba7c057 x27: dfff800000000000 x26: ffff700003f48e08 x25: ffff80001fa47040 x24: ffff8000116f45e0 x23: 000000000000c10e x22: ffff0000dd3e0340 x21: ffff0000dd3e00a8 x20: ffff0000dd3e02bc x19: ffff0000dd3e0000 x18: 0000000000000001 x17: 0000000000000000 x16: ffff8000111a5644 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000000 x10: 0000000000000000 x9 : ffff80000a11543c x8 : ffff0000cdaa1b40 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001fa468b8 x4 : ffff80001422f280 x3 : ffff80000850383c x2 : 0000000000000001 x1 : 0000000000000004 x0 : 0000000000000000 Call trace: gfs2_withdraw+0x118c/0x129c fs/gfs2/util.c:341 gfs2_metatype_check_ii+0x8c/0xac fs/gfs2/util.c:520 gfs2_metatype_check_i fs/gfs2/util.h:129 [inline] gfs2_meta_buffer+0x258/0x2ec fs/gfs2/meta_io.c:493 gfs2_meta_inode_buffer fs/gfs2/meta_io.h:70 [inline] gfs2_inode_refresh+0xac/0xda8 fs/gfs2/glops.c:481 inode_go_lock+0xfc/0x38c fs/gfs2/glops.c:510 do_promote+0x678/0xa70 fs/gfs2/glock.c:507 finish_xmote+0x450/0xb2c fs/gfs2/glock.c:678 do_xmote+0x674/0xf90 fs/gfs2/glock.c:824 run_queue+0x3fc/0x6c0 fs/gfs2/glock.c:872 gfs2_glock_nq+0x828/0x141c fs/gfs2/glock.c:1534 gfs2_glock_nq_init fs/gfs2/glock.h:246 [inline] init_journal+0xa30/0x1d7c fs/gfs2/ops_fstype.c:797 init_inodes+0xe0/0x2d4 fs/gfs2/ops_fstype.c:891 gfs2_fill_super+0x121c/0x19e0 fs/gfs2/ops_fstype.c:1249 get_tree_bdev+0x358/0x544 fs/super.c:1325 gfs2_get_tree+0x54/0x1b4 fs/gfs2/ops_fstype.c:1332 vfs_get_tree+0x90/0x274 fs/super.c:1530 do_new_mount+0x228/0x810 fs/namespace.c:3014 path_mount+0x5b4/0x1000 fs/namespace.c:3344 do_mount fs/namespace.c:3357 [inline] __do_sys_mount fs/namespace.c:3565 [inline] __se_sys_mount fs/namespace.c:3542 [inline] __arm64_sys_mount+0x514/0x5e4 fs/namespace.c:3542 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1e0 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: f94013e0 979cdb68 17fffeec 978d8d32 (d4210000) ---[ end trace 55072998ea54e2b7 ]---