gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
gfs2: fsid=syz:syz: Now mounting FS...
gfs2: fsid=syz:syz.0: fatal: invalid metadata block
  bh = 2075 (magic number)
  function = gfs2_meta_indirect_buffer, file = fs/gfs2/meta_io.c, line = 417
gfs2: fsid=syz:syz.0: about to withdraw this file system
general protection fault, probably for non-canonical address 0xdffffc000000000d: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000068-0x000000000000006f]
CPU: 0 PID: 8743 Comm: syz-executor.0 Not tainted 5.5.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:signal_our_withdraw fs/gfs2/util.c:87 [inline]
RIP: 0010:gfs2_withdraw.cold.9+0xe6/0xa95 fs/gfs2/util.c:282
Code: 00 48 c1 e0 2a 80 3c 02 00 0f 85 e2 01 00 00 4d 8b ae 28 08 00 00 b8 ff ff 37 00 48 c1 e0 2a 49 8d 7d 68 48 89 fa 48 c1 ea 03 <80> 3c 02 00 74 05 e8 f3 04 93 fe 4d 8b 6d 68 b8 ff ff 37 00 48 c1
RSP: 0018:ffffc90004b77450 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff88808d1e8050 RCX: 0000000000000000
RDX: 000000000000000d RSI: ffffffff88f831c0 RDI: 0000000000000068
RBP: ffff88808d1e82e8 R08: ffffed1015cc6661 R09: ffffed1015cc6661
R10: ffffed1015cc6660 R11: ffff8880ae633307 R12: ffffffff8808a500
R13: 0000000000000000 R14: ffff88808d1e8000 R15: ffff88808d1e826d
FS:  00007f0fb70a5700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff4a1b49e0 CR3: 0000000094f18000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 gfs2_meta_check_ii+0x4d/0xa0 fs/gfs2/util.c:423
 gfs2_metatype_check_i fs/gfs2/util.h:116 [inline]
 gfs2_meta_indirect_buffer+0x31d/0x3a0 fs/gfs2/meta_io.c:417
 gfs2_meta_inode_buffer fs/gfs2/meta_io.h:70 [inline]
 gfs2_inode_refresh+0x8e/0xd70 fs/gfs2/glops.c:405
 inode_go_lock+0x25c/0x3cc fs/gfs2/glops.c:435
 do_promote+0x382/0xb80 fs/gfs2/glock.c:391
 finish_xmote+0x4e9/0xce0 fs/gfs2/glock.c:552
 do_xmote+0x3fd/0x570 fs/gfs2/glock.c:626
 gfs2_glock_nq+0x754/0x12a0 fs/gfs2/glock.c:1240
 gfs2_glock_nq_init fs/gfs2/glock.h:229 [inline]
 gfs2_lookupi+0x291/0x4e0 fs/gfs2/inode.c:298
 gfs2_lookup_simple+0x92/0xd0 fs/gfs2/inode.c:249
 init_journal fs/gfs2/ops_fstype.c:620 [inline]
 init_inodes+0x310/0x1d20 fs/gfs2/ops_fstype.c:756
 gfs2_fill_super+0x1749/0x2356 fs/gfs2/ops_fstype.c:1125
 get_tree_bdev+0x3a1/0x560 fs/super.c:1342
 gfs2_get_tree+0x45/0x240 fs/gfs2/ops_fstype.c:1190
 vfs_get_tree+0x7e/0x330 fs/super.c:1547
 do_new_mount fs/namespace.c:2822 [inline]
 do_mount+0x102b/0x16b0 fs/namespace.c:3142
 __do_sys_mount fs/namespace.c:3351 [inline]
 __se_sys_mount fs/namespace.c:3328 [inline]
 __x64_sys_mount+0x15d/0x1b0 fs/namespace.c:3328
 do_syscall_64+0xc6/0x620 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x460bca
Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 dd 87 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ba 87 fb ff c3 66 0f 1f 84 00 00 00 00 00
RSP: 002b:00007f0fb70a4a88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f0fb70a4b20 RCX: 0000000000460bca
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f0fb70a4ae0
RBP: 00007f0fb70a4ae0 R08: 00007f0fb70a4b20 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000020000000
R13: 0000000020000100 R14: 0000000020000200 R15: 00000000200a6800
Modules linked in:
---[ end trace 215a82b3517d5577 ]---
RIP: 0010:signal_our_withdraw fs/gfs2/util.c:87 [inline]
RIP: 0010:gfs2_withdraw.cold.9+0xe6/0xa95 fs/gfs2/util.c:282
Code: 00 48 c1 e0 2a 80 3c 02 00 0f 85 e2 01 00 00 4d 8b ae 28 08 00 00 b8 ff ff 37 00 48 c1 e0 2a 49 8d 7d 68 48 89 fa 48 c1 ea 03 <80> 3c 02 00 74 05 e8 f3 04 93 fe 4d 8b 6d 68 b8 ff ff 37 00 48 c1
RSP: 0018:ffffc90004b77450 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff88808d1e8050 RCX: 0000000000000000
RDX: 000000000000000d RSI: ffffffff88f831c0 RDI: 0000000000000068
RBP: ffff88808d1e82e8 R08: ffffed1015cc6661 R09: ffffed1015cc6661
R10: ffffed1015cc6660 R11: ffff8880ae633307 R12: ffffffff8808a500
R13: 0000000000000000 R14: ffff88808d1e8000 R15: ffff88808d1e826d
FS:  00007f0fb70a5700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0ed8eccdb8 CR3: 0000000094f18000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400