Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.0.229' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   34.938526] REISERFS (device loop0): found reiserfs format "3.6" with non-standard journal
[   34.947407] REISERFS (device loop0): using ordered data mode
[   34.953692] reiserfs: using flush barriers
[   34.962215] REISERFS (device loop0): journal params: device loop0, size 8192, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
[   34.979549] REISERFS (device loop0): checking transaction log (loop0)
[   35.784740] REISERFS (device loop0): Using rupasov hash to sort names
[   35.792165] BUG: unable to handle kernel NULL pointer dereference at 0000000000000000
[   35.800136] PGD 96e65067 P4D 96e65067 PUD a9dc7067 PMD 0 
[   35.805666] Oops: 0010 [#1] PREEMPT SMP KASAN
[   35.810158] CPU: 0 PID: 8106 Comm: syz-executor839 Not tainted 4.19.186-syzkaller #0
[   35.818022] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   35.827363] RIP: 0010:          (null)
[   35.831260] Code: Bad RIP value.
[   35.834601] RSP: 0018:ffff88809d6af8a8 EFLAGS: 00010246
[   35.840000] RAX: dffffc0000000000 RBX: 1ffff11013ad5f18 RCX: ffffffff81a4f39b
[   35.847347] RDX: 0000000000000000 RSI: ffff88809a1f3e40 RDI: ffff88808948d740
[   35.854600] RBP: ffffffff8878d400 R08: 0000000000000000 R09: 0000000000000000
[   35.861851] R10: 0000000000000005 R11: 0000000000000000 R12: ffff88809a1f3e40
[   35.869127] R13: ffff88808948d740 R14: ffff88809d6afa38 R15: ffff88809d6af8e0
[   35.876402] FS:  0000000000c24300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
[   35.884614] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   35.890489] CR2: ffffffffffffffd6 CR3: 0000000098035000 CR4: 00000000001406f0
[   35.897746] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   35.905005] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   35.912287] Call Trace:
[   35.914886]  __lookup_slow+0x246/0x4a0
[   35.918762]  ? follow_dotdot_rcu+0x1040/0x1040
[   35.923335]  ? __d_lookup+0x411/0x710
[   35.927215]  ? d_lookup+0x18e/0x250
[   35.930935]  lookup_one_len+0x163/0x190
[   35.934912]  ? try_lookup_one_len+0x180/0x180
[   35.939409]  reiserfs_lookup_privroot+0x92/0x280
[   35.944156]  reiserfs_fill_super+0x202c/0x2cf0
[   35.948754]  ? reiserfs_remount+0x1540/0x1540
[   35.953249]  ? lock_downgrade+0x720/0x720
[   35.957381]  ? snprintf+0xbb/0xf0
[   35.961105]  ? wait_for_completion_io+0x10/0x10
[   35.965959]  mount_bdev+0x2fc/0x3b0
[   35.969586]  ? reiserfs_remount+0x1540/0x1540
[   35.974176]  mount_fs+0xa3/0x310
[   35.977666]  vfs_kern_mount.part.0+0x68/0x470
[   35.982160]  do_mount+0x113c/0x2f10
[   35.985791]  ? lock_acquire+0x170/0x3c0
[   35.989769]  ? check_preemption_disabled+0x41/0x280
[   35.994795]  ? copy_mount_string+0x40/0x40
[   35.999015]  ? copy_mount_options+0x59/0x380
[   36.003429]  ? rcu_read_lock_sched_held+0x16c/0x1d0
[   36.008458]  ? kmem_cache_alloc_trace+0x323/0x380
[   36.013308]  ? copy_mount_options+0x26f/0x380
[   36.017803]  ksys_mount+0xcf/0x130
[   36.021332]  __x64_sys_mount+0xba/0x150
[   36.025305]  ? lockdep_hardirqs_on+0x3a8/0x5c0
[   36.029882]  do_syscall_64+0xf9/0x620
[   36.033666]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   36.038854] RIP: 0033:0x4451ea
[   36.042028] Code: 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48
[   36.060929] RSP: 002b:00007ffe34c0dd28 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5
[   36.069759] RAX: ffffffffffffffda RBX: 00007ffe34c0dd80 RCX: 00000000004451ea
[   36.077204] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffe34c0dd40
[   36.084461] RBP: 00007ffe34c0dd40 R08: 00007ffe34c0dd80 R09: 0000000000000000
[   36.091753] R10: 0000000000000000 R11: 0000000000000286 R12: 00000000200002a8
[   36.099027] R13: 0000000000000003 R14: 0000000000000004 R15: 0000000000000007
[   36.106322] Modules linked in:
[   36.109505] CR2: 0000000000000000
[   36.114208] ---[ end trace e1709dbdba48f960 ]---
[   36.119030] RIP: 0010:          (null)
[   36.122937] Code: Bad RIP value.
[   36.126302] RSP: 0018:ffff88809d6af8a8 EFLAGS: 00010246
[   36.131754] RAX: dffffc0000000000 RBX: 1ffff11013ad5f18 RCX: ffffffff81a4f39b
[   36.139203] RDX: 0000000000000000 RSI: ffff88809a1f3e40 RDI: ffff88808948d740
[   36.146528] RBP: ffffffff8878d400 R08: 0000000000000000 R09: 0000000000000000
[   36.153885] R10: 0000000000000005 R11: 0000000000000000 R12: ffff88809a1f3e40
[   36.161260] R13: ffff88808948d740 R14: ffff88809d6afa38 R15: ffff88809d6af8e0
[   36.168694] FS:  0000000000c24300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
[   36.176924] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   36.182874] CR2: ffffffffffffffd6 CR3: 0000000098035000 CR4: 00000000001406f0
[   36.190397] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   36.197760] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   36.205834] Kernel panic - not syncing: Fatal exception
[   36.211804] Kernel Offset: disabled
[   36.215427] Rebooting in 86400 seconds..