ldm_validate_privheads(): Cannot find PRIVHEAD 1.
reiserfs: using flush barriers
 loop2: p1 p2 p3 p4
REISERFS warning (device loop3): sh-459 journal_init: unable to read journal header
------------[ cut here ]------------
kernel BUG at fs/block_dev.c:1627!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
kobject: 'loop4p2' (00000000b211c4ac): calling ktype release
CPU: 0 PID: 22552 Comm: syz-executor0 Not tainted 4.19.0-rc8+ #73
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:blkdev_get+0x65f/0xb50 fs/block_dev.c:1627
kobject: 'loop4p2': free name
Code: ff ff ff 0f 84 4d 03 00 00 48 89 85 f0 fe ff ff e8 16 ff 9d ff 48 8b 85 f0 fe ff ff 48 85 c0 0f 84 9b 00 00 00 e8 01 ff 9d ff <0f> 0b e8 fa fe 9d ff 4c 89 e2 48 b8 00 00 00 00 00 fc ff df 48 c1
RSP: 0018:ffff880181c7f128 EFLAGS: 00010212
kobject: 'loop4p4' (0000000006361479): kobject_uevent_env
RAX: 0000000000040000 RBX: 0000000000000000 RCX: ffffc90001ee0000
RDX: 00000000000219a3 RSI: ffffffff81e0accf RDI: 0000000000000005
RBP: ffff880181c7f258 R08: ffff8801bec52540 R09: fffffbfff12424f0
R10: fffffbfff12424f0 R11: ffffffff89212783 R12: ffff8801bad15458
R13: ffff8801bad78298 R14: ffff8801bad78280 R15: ffff8801bad153c0
FS:  00007fab5e947700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8f9d78e9a0 CR3: 00000001b4541000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 blkdev_get_by_dev+0x3f/0x80 fs/block_dev.c:1739
 journal_init_dev fs/reiserfs/journal.c:2628 [inline]
 journal_init+0xc96/0x6a10 fs/reiserfs/journal.c:2775
 reiserfs_fill_super+0xd6d/0x3b90 fs/reiserfs/super.c:2034
 mount_bdev+0x30c/0x3e0 fs/super.c:1158
 get_super_block+0x34/0x40 fs/reiserfs/super.c:2605
 mount_fs+0xae/0x31d fs/super.c:1261
 vfs_kern_mount.part.35+0xdc/0x4f0 fs/namespace.c:961
 vfs_kern_mount fs/namespace.c:951 [inline]
 do_new_mount fs/namespace.c:2457 [inline]
 do_mount+0x581/0x31f0 fs/namespace.c:2787
 ksys_mount+0x12d/0x140 fs/namespace.c:3003
 __do_sys_mount fs/namespace.c:3017 [inline]
 __se_sys_mount fs/namespace.c:3014 [inline]
 __x64_sys_mount+0xbe/0x150 fs/namespace.c:3014
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459fda
Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 7d 89 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 5a 89 fb ff c3 66 0f 1f 84 00 00 00 00 00
RSP: 002b:00007fab5e946a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fab5e946b30 RCX: 0000000000459fda
RDX: 00007fab5e946ad0 RSI: 0000000020000100 RDI: 00007fab5e946af0
RBP: 0000000020000100 R08: 00007fab5e946b30 R09: 00007fab5e946ad0
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003
R13: 0000000000000000 R14: 00000000004d7ec0 R15: 00000000ffffffff
Modules linked in:
---[ end trace 6e9108c3dd12cdab ]---
RIP: 0010:blkdev_get+0x65f/0xb50 fs/block_dev.c:1627
Code: ff ff ff 0f 84 4d 03 00 00 48 89 85 f0 fe ff ff e8 16 ff 9d ff 48 8b 85 f0 fe ff ff 48 85 c0 0f 84 9b 00 00 00 e8 01 ff 9d ff <0f> 0b e8 fa fe 9d ff 4c 89 e2 48 b8 00 00 00 00 00 fc ff df 48 c1
RSP: 0018:ffff880181c7f128 EFLAGS: 00010212
RAX: 0000000000040000 RBX: 0000000000000000 RCX: ffffc90001ee0000
RDX: 00000000000219a3 RSI: ffffffff81e0accf RDI: 0000000000000005
RBP: ffff880181c7f258 R08: ffff8801bec52540 R09: fffffbfff12424f0
R10: fffffbfff12424f0 R11: ffffffff89212783 R12: ffff8801bad15458
R13: ffff8801bad78298 R14: ffff8801bad78280 R15: ffff8801bad153c0
FS:  00007fab5e947700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8f9d78e9a0 CR3: 00000001b4541000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400