[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.240' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 28.573220] IPVS: ftp: loaded support on port[0] = 21 [ 28.617701] REISERFS (device loop0): found reiserfs format "3.5" with standard journal [ 28.626317] REISERFS (device loop0): using ordered data mode [ 28.632205] reiserfs: using flush barriers [ 28.639595] REISERFS (device loop0): journal params: device loop0, size 8192, journal first block 10, max trans len 1024, max batch 900, max commit age 30, max trans age 30 [ 28.656713] REISERFS (device loop0): checking transaction log (loop0) [ 29.183519] REISERFS (device loop0): Using tea hash to sort names [ 29.190112] REISERFS (device loop0): using 3.5.x disk format [ 29.196679] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage. [ 29.218618] divide error: 0000 [#1] PREEMPT SMP KASAN [ 29.223836] Modules linked in: [ 29.227024] CPU: 0 PID: 7972 Comm: syz-executor660 Not tainted 4.14.204-syzkaller #0 [ 29.234894] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.244236] task: ffff888098d641c0 task.stack: ffff8880b31a0000 [ 29.250364] RIP: 0010:do_journal_end+0x212e/0x4260 [ 29.255872] RSP: 0018:ffff8880b31a7ab8 EFLAGS: 00010246 [ 29.261209] RAX: 0000000000000005 RBX: dffffc0000000000 RCX: ffff8880b3654e00 [ 29.268456] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 29.275703] RBP: ffffc90005af1048 R08: ffffffff8b9a44c8 R09: 0000000000000000 [ 29.282946] R10: 0000000000000000 R11: 0000000000000001 R12: ffff8880a256f000 [ 29.290190] R13: 0000000000000001 R14: ffff888095b42ac0 R15: 0000000000001000 [ 29.297466] FS: 0000000001a54880(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 29.305682] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 29.311537] CR2: 00000000006d00a0 CR3: 0000000008e6a000 CR4: 00000000001406f0 [ 29.318799] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.326045] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.333291] Call Trace: [ 29.335867] reiserfs_sync_fs+0xbb/0xd0 [ 29.339816] ? handle_quota_files+0x3a0/0x3a0 [ 29.344287] ? handle_quota_files+0x3a0/0x3a0 [ 29.348758] sync_filesystem+0x185/0x230 [ 29.352806] generic_shutdown_super+0x70/0x370 [ 29.357364] kill_block_super+0x95/0xe0 [ 29.361323] deactivate_locked_super+0x6c/0xd0 [ 29.365895] deactivate_super+0x7f/0xa0 [ 29.369846] cleanup_mnt+0x186/0x2c0 [ 29.373549] task_work_run+0x11f/0x190 [ 29.377412] do_exit+0xa08/0x27f0 [ 29.380847] ? __do_page_fault+0x571/0xad0 [ 29.385056] ? mm_update_next_owner+0x5b0/0x5b0 [ 29.389710] ? lock_downgrade+0x740/0x740 [ 29.393832] do_group_exit+0x100/0x2e0 [ 29.397708] SyS_exit_group+0x19/0x20 [ 29.401483] ? do_group_exit+0x2e0/0x2e0 [ 29.405518] do_syscall_64+0x1d5/0x640 [ 29.409393] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 29.414560] RIP: 0033:0x4437a8 [ 29.417737] RSP: 002b:00007ffc84d2fa88 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 29.425440] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00000000004437a8 [ 29.432689] RDX: 0000000000000001 RSI: 000000000000003c RDI: 0000000000000001 [ 29.439936] RBP: 00000000004c3c30 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 29.447182] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 29.454430] R13: 00000000006d6180 R14: 0000000000000000 R15: 0000000000000000 [ 29.461679] Code: 95 c2 45 84 d3 0f 85 6a 15 00 00 83 e2 07 40 38 d6 0f 9e c2 40 84 f6 40 0f 95 c6 40 84 f2 0f 85 51 15 00 00 41 8b 7c 24 14 31 d2 <48> f7 f7 48 8d 79 18 4a 8d 34 0a 48 89 f8 48 c1 e8 03 80 3c 18 [ 29.480866] RIP: do_journal_end+0x212e/0x4260 RSP: ffff8880b31a7ab8 [ 29.487987] ---[ end trace e1d67c30bf08b1c0 ]--- [ 29.492738] Kernel panic - not syncing: Fatal exception [ 29.498749] Kernel Offset: disabled [ 29.502370] Rebooting in 86400 seconds..