gfs2: fsid=syz:syz.0: fatal: invalid metadata block bh = 2072 (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 0xdffffc000000000e: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000070-0x0000000000000077] CPU: 0 PID: 27118 Comm: syz-executor.0 Not tainted 5.9.0-rc6-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 RIP: 0010:signal_our_withdraw fs/gfs2/util.c:97 [inline] RIP: 0010:gfs2_withdraw.cold+0xff/0xc0e fs/gfs2/util.c:294 Code: 00 48 c1 e0 2a 80 3c 02 00 0f 85 19 02 00 00 4c 8b bb a0 08 00 00 b8 ff ff 37 00 48 c1 e0 2a 49 8d 7f 70 48 89 fa 48 c1 ea 03 <80> 3c 02 00 74 05 e8 67 6d 68 fe 4d 8b 7f 70 b8 ff ff 37 00 48 c1 RSP: 0018:ffffc900018b73b8 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff888059d70000 RCX: ffffc90002639000 RDX: 000000000000000e RSI: ffffffff834e9fdf RDI: 0000000000000070 RBP: ffff888059d7026d R08: 0000000000000038 R09: ffff88802ce318e7 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888059d70050 R13: ffff888059d702f0 R14: ffffffff88cc1320 R15: 0000000000000000 FS: 00007f348fd73700(0000) GS:ffff88802ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000b60004 CR3: 000000004a089000 CR4: 0000000000350ef0 DR0: 0000000020000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: gfs2_meta_check_ii+0x68/0xa0 fs/gfs2/util.c:450 gfs2_metatype_check_i fs/gfs2/util.h:126 [inline] gfs2_meta_indirect_buffer+0x3a3/0x3f0 fs/gfs2/meta_io.c:417 gfs2_meta_inode_buffer fs/gfs2/meta_io.h:70 [inline] gfs2_inode_refresh+0x95/0xdf0 fs/gfs2/glops.c:438 inode_go_lock+0x309/0x49f fs/gfs2/glops.c:468 do_promote+0x4a0/0xc10 fs/gfs2/glock.c:390 finish_xmote+0x4ed/0xf40 fs/gfs2/glock.c:560 do_xmote+0x812/0xba0 fs/gfs2/glock.c:686 run_queue+0x323/0x680 fs/gfs2/glock.c:751 gfs2_glock_nq+0x716/0x11b0 fs/gfs2/glock.c:1410 gfs2_glock_nq_init fs/gfs2/glock.h:238 [inline] gfs2_lookupi+0x314/0x630 fs/gfs2/inode.c:317 gfs2_lookup_simple+0x99/0xe0 fs/gfs2/inode.c:268 init_journal fs/gfs2/ops_fstype.c:620 [inline] init_inodes+0x367/0x1f40 fs/gfs2/ops_fstype.c:756 gfs2_fill_super+0x195e/0x254a fs/gfs2/ops_fstype.c:1125 get_tree_bdev+0x421/0x740 fs/super.c:1342 gfs2_get_tree+0x4a/0x270 fs/gfs2/ops_fstype.c:1201 vfs_get_tree+0x89/0x2f0 fs/super.c:1547 do_new_mount fs/namespace.c:2875 [inline] path_mount+0x1387/0x20a0 fs/namespace.c:3192 do_mount fs/namespace.c:3205 [inline] __do_sys_mount fs/namespace.c:3413 [inline] __se_sys_mount fs/namespace.c:3390 [inline] __x64_sys_mount+0x27f/0x300 fs/namespace.c:3390 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45e5ea Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 6d 9e 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 4a 9e fb ff c3 66 0f 1f 84 00 00 00 00 00 RSP: 002b:00007f348fd72aa8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f348fd72b40 RCX: 000000000045e5ea RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f348fd72b00 RBP: 00007f348fd72b00 R08: 00007f348fd72b40 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000 R13: 0000000020000100 R14: 0000000020000200 R15: 0000000020047a20 Modules linked in: ---[ end trace a1967e7d2c26629b ]--- RIP: 0010:signal_our_withdraw fs/gfs2/util.c:97 [inline] RIP: 0010:gfs2_withdraw.cold+0xff/0xc0e fs/gfs2/util.c:294 Code: 00 48 c1 e0 2a 80 3c 02 00 0f 85 19 02 00 00 4c 8b bb a0 08 00 00 b8 ff ff 37 00 48 c1 e0 2a 49 8d 7f 70 48 89 fa 48 c1 ea 03 <80> 3c 02 00 74 05 e8 67 6d 68 fe 4d 8b 7f 70 b8 ff ff 37 00 48 c1 RSP: 0018:ffffc900018b73b8 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff888059d70000 RCX: ffffc90002639000 RDX: 000000000000000e RSI: ffffffff834e9fdf RDI: 0000000000000070 RBP: ffff888059d7026d R08: 0000000000000038 R09: ffff88802ce318e7 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888059d70050 R13: ffff888059d702f0 R14: ffffffff88cc1320 R15: 0000000000000000 FS: 00007f348fd73700(0000) GS:ffff88802cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000256f020 CR3: 000000004a089000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400