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 = 488 gfs2: fsid=syz:syz.0: about to withdraw this file system general protection fault, probably for non-canonical address 0xdffffc000000000e: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000070-0x0000000000000077] CPU: 1 PID: 8472 Comm: syz-executor938 Not tainted 5.10.0-rc6-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:97 [inline] RIP: 0010:gfs2_withdraw+0x2d6/0x13c0 fs/gfs2/util.c:294 Code: c1 e8 03 48 89 44 24 28 80 3c 18 00 74 08 48 89 ef e8 6e 34 5d fe 48 89 6c 24 20 48 8b 6d 00 48 83 c5 70 48 89 e8 48 c1 e8 03 <80> 3c 18 00 74 08 48 89 ef e8 4c 34 5d fe 48 8b 45 00 48 89 44 24 RSP: 0018:ffffc9000d91f488 EFLAGS: 00010202 RAX: 000000000000000e RBX: dffffc0000000000 RCX: 71fd05a8cb77d900 RDX: ffff8880204e9a40 RSI: 0000000000000000 RDI: ffff88802ad78488 RBP: 0000000000000070 R08: ffffffff8359e9e3 R09: ffffed10173a3ffc R10: ffffed10173a3ffc R11: 0000000000000000 R12: ffffffff89fde320 R13: ffff88802ad780a8 R14: 1ffff110055af058 R15: ffff88802ad78000 FS: 0000000001da6880(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055fd5d05f160 CR3: 00000000147e8000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: gfs2_meta_check_ii+0x70/0x80 fs/gfs2/util.c:450 gfs2_metatype_check_i fs/gfs2/util.h:126 [inline] gfs2_meta_indirect_buffer+0x29a/0x370 fs/gfs2/meta_io.c:488 gfs2_meta_inode_buffer fs/gfs2/meta_io.h:70 [inline] gfs2_inode_refresh+0x65/0xc30 fs/gfs2/glops.c:478 inode_go_lock+0x12c/0x480 fs/gfs2/glops.c:508 do_promote+0x4db/0xcb0 fs/gfs2/glock.c:395 finish_xmote+0x88d/0x12d0 fs/gfs2/glock.c:562 do_xmote+0xad9/0x14c0 fs/gfs2/glock.c:688 gfs2_glock_nq+0xbd3/0x16a0 fs/gfs2/glock.c:1414 gfs2_glock_nq_init fs/gfs2/glock.h:238 [inline] gfs2_lookupi+0x36f/0x4f0 fs/gfs2/inode.c:318 gfs2_lookup_simple+0xa4/0x100 fs/gfs2/inode.c:269 init_journal+0xff/0x2110 fs/gfs2/ops_fstype.c:714 init_inodes fs/gfs2/ops_fstype.c:857 [inline] gfs2_fill_super+0x2725/0x3db0 fs/gfs2/ops_fstype.c:1184 get_tree_bdev+0x3e9/0x5f0 fs/super.c:1344 gfs2_get_tree+0x4c/0x1f0 fs/gfs2/ops_fstype.c:1260 vfs_get_tree+0x88/0x270 fs/super.c:1549 do_new_mount fs/namespace.c:2875 [inline] path_mount+0x17b4/0x2a20 fs/namespace.c:3205 do_mount fs/namespace.c:3218 [inline] __do_sys_mount fs/namespace.c:3426 [inline] __se_sys_mount+0x28c/0x320 fs/namespace.c:3403 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45b45a Code: b8 08 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 fd ad 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 da ad fb ff c3 66 0f 1f 84 00 00 00 00 00 RSP: 002b:00007ffce7778578 EFLAGS: 00000293 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007ffce77785d0 RCX: 000000000045b45a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffce7778590 RBP: 00007ffce7778590 R08: 00007ffce77785d0 R09: 00007ffc00000015 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000919 R13: 0000000000000004 R14: 0000000000000003 R15: 0000000000000003 Modules linked in: ---[ end trace 9bf7d70ece13650a ]--- RIP: 0010:signal_our_withdraw fs/gfs2/util.c:97 [inline] RIP: 0010:gfs2_withdraw+0x2d6/0x13c0 fs/gfs2/util.c:294 Code: c1 e8 03 48 89 44 24 28 80 3c 18 00 74 08 48 89 ef e8 6e 34 5d fe 48 89 6c 24 20 48 8b 6d 00 48 83 c5 70 48 89 e8 48 c1 e8 03 <80> 3c 18 00 74 08 48 89 ef e8 4c 34 5d fe 48 8b 45 00 48 89 44 24 RSP: 0018:ffffc9000d91f488 EFLAGS: 00010202 RAX: 000000000000000e RBX: dffffc0000000000 RCX: 71fd05a8cb77d900 RDX: ffff8880204e9a40 RSI: 0000000000000000 RDI: ffff88802ad78488 RBP: 0000000000000070 R08: ffffffff8359e9e3 R09: ffffed10173a3ffc R10: ffffed10173a3ffc R11: 0000000000000000 R12: ffffffff89fde320 R13: ffff88802ad780a8 R14: 1ffff110055af058 R15: ffff88802ad78000 FS: 0000000001da6880(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055fd5d05f160 CR3: 00000000147e8000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400