INIT: Entering runlevel: 2 [info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.32' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 30.606616] F2FS-fs (loop0): Magic Mismatch, valid(0xf2f52010) - read(0x0) [ 30.613972] F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock [ 30.623088] F2FS-fs (loop0): invalid crc value [ 30.630682] BUG: unable to handle kernel paging request at ffffed006b2a50c0 [ 30.637801] PGD 21ffee067 P4D 21ffee067 PUD 21fbeb067 PMD 0 [ 30.643591] Oops: 0000 [#1] SMP KASAN [ 30.647368] Dumping ftrace buffer: [ 30.650882] (ftrace buffer empty) [ 30.654569] Modules linked in: [ 30.657747] CPU: 0 PID: 4514 Comm: syzkaller989480 Not tainted 4.17.0-rc1+ #8 [ 30.665004] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.674366] RIP: 0010:build_segment_manager+0x7ef7/0xbf70 [ 30.679880] RSP: 0018:ffff8801b102e5b0 EFLAGS: 00010a06 [ 30.685225] RAX: 1ffff1006b2a50c0 RBX: 0000000000000004 RCX: 0000000000000001 [ 30.692487] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8801ac74243e [ 30.699732] RBP: ffff8801b102f410 R08: ffff8801acbd46c0 R09: fffffbfff14d9af8 [ 30.706979] R10: fffffbfff14d9af8 R11: ffff8801acbd46c0 R12: ffff8801ac742a80 [ 30.714234] R13: ffff8801d9519100 R14: dffffc0000000000 R15: ffff880359528600 [ 30.721483] FS: 0000000001e04880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 30.729686] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 30.735547] CR2: ffffed006b2a50c0 CR3: 00000001ac6ac000 CR4: 00000000001406f0 [ 30.742808] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 30.750057] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 30.757302] Call Trace: [ 30.759877] ? flush_sit_entries+0x2c40/0x2c40 [ 30.764450] ? vprintk_emit+0x3e5/0xdd0 [ 30.768409] ? __lock_acquire+0x7f5/0x5140 [ 30.772635] ? lock_downgrade+0x8e0/0x8e0 [ 30.776768] ? debug_check_no_locks_freed+0x310/0x310 [ 30.781938] ? mark_held_locks+0xc9/0x160 [ 30.786072] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 30.790636] ? vprintk_default+0x28/0x30 [ 30.794677] ? printk+0x9e/0xba [ 30.797936] ? kmsg_dump_rewind_nolock+0xe4/0xe4 [ 30.802673] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 30.808192] ? f2fs_msg+0x11e/0x170 [ 30.811801] ? f2fs_quota_read+0x1030/0x1030 [ 30.816192] ? crc32_pclmul_le+0x49/0x120 [ 30.820324] ? graph_lock+0x170/0x170 [ 30.824105] ? __asan_allocas_unpoison+0x16/0x20 [ 30.828838] ? crypto_shash_update+0x10b/0x2a0 [ 30.833399] ? get_checkpoint_version+0x351/0x5d0 [ 30.838225] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 30.843741] ? unlock_page+0x1d0/0x2b0 [ 30.847611] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 30.853135] ? bpf_prog_kallsyms_find+0xd6/0x4a0 [ 30.857877] ? modules_open+0xa0/0xa0 [ 30.861659] ? __bpf_trace_bpf_map_next_key+0x40/0x40 [ 30.866828] ? lock_downgrade+0x8e0/0x8e0 [ 30.870955] ? noop_count+0x40/0x40 [ 30.874564] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 30.880077] ? bpf_prog_kallsyms_find+0xd6/0x4a0 [ 30.884812] ? modules_open+0xa0/0xa0 [ 30.888591] ? __bpf_trace_bpf_map_next_key+0x40/0x40 [ 30.893758] ? kernel_text_address+0x79/0xf0 [ 30.898156] ? is_bpf_text_address+0xae/0x170 [ 30.902629] ? lock_downgrade+0x8e0/0x8e0 [ 30.906764] ? lock_release+0xa10/0xa10 [ 30.910723] ? kasan_check_read+0x11/0x20 [ 30.914858] ? rcu_is_watching+0x85/0x140 [ 30.918993] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 30.924169] ? is_bpf_text_address+0xd7/0x170 [ 30.928651] ? kernel_text_address+0x79/0xf0 [ 30.933058] ? __unwind_start+0x166/0x330 [ 30.937199] ? __kernel_text_address+0xd/0x40 [ 30.941685] ? unwind_get_return_address+0x61/0xa0 [ 30.946596] ? __save_stack_trace+0x7e/0xd0 [ 30.950899] ? add_lock_to_list.isra.29+0x1e4/0x490 [ 30.955910] ? trace_hardirqs_off+0x10/0x10 [ 30.960212] ? save_stack_trace+0x1a/0x20 [ 30.964338] ? save_trace+0xe0/0x290 [ 30.968040] ? kasan_check_read+0x11/0x20 [ 30.972171] ? __lock_acquire+0x28fb/0x5140 [ 30.976483] ? debug_check_no_locks_freed+0x310/0x310 [ 30.981651] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 30.986215] ? kasan_check_read+0x11/0x20 [ 30.990343] ? mark_held_locks+0xc9/0x160 [ 30.994471] ? print_usage_bug+0xc0/0xc0 [ 30.998517] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 31.003513] ? __lockdep_init_map+0x105/0x590 [ 31.007995] ? lockdep_init_map+0x9/0x10 [ 31.012047] ? __mutex_init+0x1ef/0x280 [ 31.016014] ? print_usage_bug+0xc0/0xc0 [ 31.020065] ? mark_held_locks+0xc9/0x160 [ 31.024216] ? __raw_spin_lock_init+0x1c/0x100 [ 31.028786] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 31.033789] ? __lockdep_init_map+0x105/0x590 [ 31.038262] ? lockdep_init_map+0x9/0x10 [ 31.042305] ? mark_held_locks+0xc9/0x160 [ 31.046446] ? f2fs_update_extent_cache_range+0x1d0/0x1d0 [ 31.051971] ? __raw_spin_lock_init+0x1c/0x100 [ 31.056541] ? __lockdep_init_map+0x105/0x590 [ 31.061027] ? lockdep_init_map+0x9/0x10 [ 31.065093] ? __raw_spin_lock_init+0x2d/0x100 [ 31.069661] f2fs_fill_super+0x4095/0x7bf0 [ 31.073892] ? f2fs_commit_super+0x400/0x400 [ 31.078290] ? lock_downgrade+0x8e0/0x8e0 [ 31.082416] ? lock_release+0xa10/0xa10 [ 31.086369] ? check_same_owner+0x320/0x320 [ 31.090670] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 31.095674] ? widen_string+0xd8/0x2d0 [ 31.099561] ? rcu_note_context_switch+0x710/0x710 [ 31.104474] ? format_decode+0xae0/0xae0 [ 31.108521] ? graph_lock+0x170/0x170 [ 31.112309] ? widen_string+0x2d0/0x2d0 [ 31.116261] ? sget_userns+0x2dd/0xf20 [ 31.120131] ? find_held_lock+0x13f/0x1c0 [ 31.124259] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 31.129783] ? bdev_name.isra.7+0x1a1/0x1f0 [ 31.134083] ? pointer+0x1b0/0xa20 [ 31.137600] ? netdev_bits+0xb0/0xb0 [ 31.141291] ? format_decode+0x1a9/0xae0 [ 31.145331] ? set_precision+0xe0/0xe0 [ 31.149208] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 31.154378] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 31.159893] ? vsnprintf+0x242/0x1b40 [ 31.163675] ? pointer+0xa20/0xa20 [ 31.167203] ? snprintf+0xa5/0xd0 [ 31.170633] ? vsprintf+0x40/0x40 [ 31.174067] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 31.179068] ? set_blocksize+0x2c4/0x350 [ 31.183112] mount_bdev+0x30c/0x3e0 [ 31.186718] ? f2fs_commit_super+0x400/0x400 [ 31.191105] ? mount_bdev+0x30c/0x3e0 [ 31.194885] ? f2fs_commit_super+0x400/0x400 [ 31.199292] f2fs_mount+0x34/0x40 [ 31.202726] mount_fs+0xae/0x328 [ 31.206077] vfs_kern_mount.part.34+0xd4/0x4d0 [ 31.210645] ? may_umount+0xb0/0xb0 [ 31.214254] ? _raw_read_unlock+0x22/0x30 [ 31.218381] ? __get_fs_type+0x97/0xc0 [ 31.222257] do_mount+0x564/0x3070 [ 31.225778] ? copy_mount_string+0x40/0x40 [ 31.229996] ? rcu_pm_notify+0xc0/0xc0 [ 31.233869] ? copy_mount_options+0x5f/0x380 [ 31.238258] ? rcu_read_lock_sched_held+0x108/0x120 [ 31.243266] ? kmem_cache_alloc_trace+0x616/0x780 [ 31.248097] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 31.253621] ? _copy_from_user+0xdf/0x150 [ 31.257758] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 31.263276] ? copy_mount_options+0x285/0x380 [ 31.267756] ksys_mount+0x12d/0x140 [ 31.271374] __x64_sys_mount+0xbe/0x150 [ 31.275328] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 31.280329] do_syscall_64+0x1b1/0x800 [ 31.284198] ? syscall_return_slowpath+0x5c0/0x5c0 [ 31.289107] ? syscall_return_slowpath+0x30f/0x5c0 [ 31.294031] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 31.299383] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 31.304207] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 31.309375] RIP: 0033:0x443d6a [ 31.312716] RSP: 002b:00007ffd312813c8 EFLAGS: 00000297 ORIG_RAX: 00000000000000a5 [ 31.320838] RAX: ffffffffffffffda RBX: 0000000020000c00 RCX: 0000000000443d6a [ 31.328088] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffd312813d0 [ 31.335336] RBP: 0000000000000003 R08: 0000000020016a00 R09: 000000000000000a [ 31.342585] R10: 0000000000000000 R11: 0000000000000297 R12: 0000000000000004 [ 31.349834] R13: 0000000000402c60 R14: 0000000000000000 R15: 0000000000000000 [ 31.357087] Code: 48 89 55 80 48 8b 50 36 48 89 55 88 48 8b 50 3e 48 89 55 90 48 8b 50 46 48 89 55 98 0f b7 40 4e 66 89 45 a0 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 30 84 c0 74 08 3c 03 0f 8e 1d 3a 00 00 41 0f b7 07 [ 31.376251] RIP: build_segment_manager+0x7ef7/0xbf70 RSP: ffff8801b102e5b0 [ 31.383244] CR2: ffffed006b2a50c0 [ 31.386679] ---[ end trace a2034989e196ff17 ]--- [ 31.391413] Kernel panic - not syncing: Fatal exception [ 31.397307] Dumping ftrace buffer: [ 31.400832] (ftrace buffer empty) [ 31.404518] Kernel Offset: disabled [ 31.408138] Rebooting in 86400 seconds..