RBP: 00000000200000c0 R08: 00007f4c40b3db30 R09: 00007f4c40b3dad0
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000014
R13: 0000000000000000 R14: 00000000004d3fb8 R15: 0000000000000045
REISERFS warning (device loop4):  reiserfs_fill_super: Cannot allocate memory for journal device name
------------[ cut here ]------------
kernel BUG at fs/reiserfs/lock.c:44!
invalid opcode: 0000 [#1] SMP KASAN
CPU: 0 PID: 5467 Comm: syz-executor4 Not tainted 4.18.0-rc4-next-20180711+ #4
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:reiserfs_write_unlock+0xeb/0x110 fs/reiserfs/lock.c:44
Code: 5d c3 e8 78 3d 76 ff 48 8d 7b 28 48 c7 83 a8 00 00 00 00 00 00 00 e8 a4 0a 97 05 e8 5f 3d 76 ff 5b 41 5c 5d c3 e8 55 3d 76 ff <0f> 0b e8 9e c1 b4 ff eb a1 e8 b7 c1 b4 ff e9 33 ff ff ff e8 ad c1 
RSP: 0018:ffff880166d1f7e0 EFLAGS: 00010246
RAX: 0000000000040000 RBX: ffff88019d9f0000 RCX: ffffc90012642000
RDX: 0000000000040000 RSI: ffffffff82063b1b RDI: ffff88019d9f00a8
RBP: ffff880166d1f7f0 R08: ffffed002cda3f25 R09: 0000000000000000
R10: ffffed003b5c4fc0 R11: ffff8801dae27e07 R12: ffff880166d1fac8
R13: ffffed002cda3f3d R14: ffffed002cda3f2d R15: ffff8801b030cd40
FS:  00007f4c40b3e700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004c2643 CR3: 000000017a504000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 reiserfs_fill_super+0xfac/0x3930 fs/reiserfs/super.c:2222
 mount_bdev+0x314/0x3e0 fs/super.c:1344
 get_super_block+0x3c/0x50 fs/reiserfs/super.c:2608
 legacy_get_tree+0x118/0x440 fs/fs_context.c:659
 vfs_get_tree+0x1cb/0x5c0 fs/super.c:1743
 do_new_mount fs/namespace.c:2567 [inline]
 do_mount+0x6c1/0x1fb0 fs/namespace.c:2889
 ksys_mount+0x12d/0x140 fs/namespace.c:3105
 __do_sys_mount fs/namespace.c:3119 [inline]
 __se_sys_mount fs/namespace.c:3116 [inline]
 __x64_sys_mount+0xbe/0x150 fs/namespace.c:3116
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45885a
Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 dd 8f 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 8f fb ff c3 66 0f 1f 84 00 00 00 00 00 
RSP: 002b:00007f4c40b3da88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f4c40b3db30 RCX: 000000000045885a
RDX: 00007f4c40b3dad0 RSI: 00000000200000c0 RDI: 00007f4c40b3daf0
RBP: 00000000200000c0 R08: 00007f4c40b3db30 R09: 00007f4c40b3dad0
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000014
R13: 0000000000000000 R14: 00000000004d3fb8 R15: 0000000000000045
Modules linked in:
Dumping ftrace buffer:
   (ftrace buffer empty)
---[ end trace 9f496c9035eafa53 ]---
RIP: 0010:reiserfs_write_unlock+0xeb/0x110 fs/reiserfs/lock.c:44
Code: 5d c3 e8 78 3d 76 ff 48 8d 7b 28 48 c7 83 a8 00 00 00 00 00 00 00 e8 a4 0a 97 05 e8 5f 3d 76 ff 5b 41 5c 5d c3 e8 55 3d 76 ff <0f> 0b e8 9e c1 b4 ff eb a1 e8 b7 c1 b4 ff e9 33 ff ff ff e8 ad c1 
RSP: 0018:ffff880166d1f7e0 EFLAGS: 00010246
RAX: 0000000000040000 RBX: ffff88019d9f0000 RCX: ffffc90012642000
RDX: 0000000000040000 RSI: ffffffff82063b1b RDI: ffff88019d9f00a8
RBP: ffff880166d1f7f0 R08: ffffed002cda3f25 R09: 0000000000000000
R10: ffffed003b5c4fc0 R11: ffff8801dae27e07 R12: ffff880166d1fac8
R13: ffffed002cda3f3d R14: ffffed002cda3f2d R15: ffff8801b030cd40
FS:  00007f4c40b3e700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004c2643 CR3: 000000017a504000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400