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 '10.128.0.55' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 34.796690] F2FS-fs (loop0): Magic Mismatch, valid(0xf2f52010) - read(0x0) [ 34.804040] F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock [ 34.812624] F2FS-fs (loop0): invalid crc value [ 34.842082] ------------[ cut here ]------------ [ 34.846925] kernel BUG at fs/f2fs/node.c:1185! [ 34.851556] invalid opcode: 0000 [#1] SMP KASAN [ 34.856215] Dumping ftrace buffer: [ 34.859731] (ftrace buffer empty) [ 34.863418] Modules linked in: [ 34.866593] CPU: 1 PID: 4549 Comm: syzkaller704305 Not tainted 4.17.0-rc1+ #10 [ 34.873925] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.883266] RIP: 0010:__get_node_page+0xb68/0x16e0 [ 34.888170] RSP: 0018:ffff8801d960e820 EFLAGS: 00010293 [ 34.893513] RAX: ffff8801d88205c0 RBX: 0000000000000003 RCX: ffffffff82f6cc06 [ 34.900761] RDX: 0000000000000000 RSI: ffffffff82f6d5e8 RDI: 0000000000000004 [ 34.908018] RBP: ffff8801d960ec30 R08: ffff8801d88205c0 R09: ffffed003b5e46c2 [ 34.915276] R10: 0000000000000003 R11: 0000000000000003 R12: ffff8801a86e00c0 [ 34.922524] R13: 0000000000000001 R14: ffff8801a86e0530 R15: ffff8801d9745240 [ 34.929776] FS: 000000000072c880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 34.937978] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.943837] CR2: 00007f3d403209b8 CR3: 00000001d8f3f000 CR4: 00000000001406e0 [ 34.951102] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.958355] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.965605] Call Trace: [ 34.968183] ? kernel_text_address+0x79/0xf0 [ 34.972574] ? ra_node_pages+0x240/0x240 [ 34.976615] ? __save_stack_trace+0x7e/0xd0 [ 34.980917] ? add_lock_to_list.isra.29+0x1e4/0x490 [ 34.985912] ? trace_hardirqs_off+0x10/0x10 [ 34.990216] ? save_stack_trace+0x1a/0x20 [ 34.994342] ? save_trace+0xe0/0x290 [ 34.998045] ? kasan_check_read+0x11/0x20 [ 35.002176] ? __lock_acquire+0x28fb/0x5140 [ 35.006477] ? trace_hardirqs_off+0x10/0x10 [ 35.010780] ? debug_check_no_locks_freed+0x310/0x310 [ 35.015950] ? lockdep_on+0x50/0x50 [ 35.019561] ? print_usage_bug+0xc0/0xc0 [ 35.023605] ? lock_pin_lock+0x350/0x350 [ 35.027649] ? graph_lock+0x170/0x170 [ 35.031428] ? debug_check_no_locks_freed+0x310/0x310 [ 35.036598] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 35.041601] ? __radix_tree_lookup+0x3d4/0x6b0 [ 35.046166] truncate_xattr_node+0x152/0x2e0 [ 35.050559] ? truncate_dnode+0x1e0/0x1e0 [ 35.054686] ? find_held_lock+0x36/0x1c0 [ 35.058729] remove_inode_page+0x200/0xaf0 [ 35.062942] ? lock_acquire+0x1dc/0x520 [ 35.066896] ? f2fs_evict_inode+0xe7e/0x1710 [ 35.071290] ? get_dnode_of_data+0x24c0/0x24c0 [ 35.075857] ? lock_release+0xa10/0xa10 [ 35.079813] ? check_same_owner+0x320/0x320 [ 35.084119] ? rcu_note_context_switch+0x710/0x710 [ 35.089035] ? f2fs_evict_inode+0xa58/0x1710 [ 35.093431] ? __might_sleep+0x95/0x190 [ 35.097391] ? down_read+0xaf/0x1b0 [ 35.101005] ? f2fs_evict_inode+0xe7e/0x1710 [ 35.105407] ? __down_interruptible+0x6e0/0x6e0 [ 35.110064] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 35.115584] ? __sb_start_write+0x17f/0x300 [ 35.119887] f2fs_evict_inode+0xe86/0x1710 [ 35.124106] ? f2fs_write_inode+0x210/0x210 [ 35.128409] ? lock_downgrade+0x8e0/0x8e0 [ 35.132548] ? kasan_check_read+0x11/0x20 [ 35.136679] ? do_raw_spin_unlock+0x9e/0x2e0 [ 35.141069] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 35.145636] ? init_wait_var_entry+0x1a0/0x1a0 [ 35.150212] ? _raw_spin_unlock+0x22/0x30 [ 35.154342] ? f2fs_write_inode+0x210/0x210 [ 35.158650] evict+0x4a6/0x960 [ 35.161827] ? destroy_inode+0x1f0/0x1f0 [ 35.165871] ? lock_downgrade+0x8e0/0x8e0 [ 35.169998] ? do_raw_spin_lock+0xc1/0x200 [ 35.174222] ? kasan_check_read+0x11/0x20 [ 35.178349] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 35.182911] ? cpumask_local_spread+0x2e0/0x2e0 [ 35.187561] iput+0x62d/0xa80 [ 35.190647] ? inode_add_lru+0x290/0x290 [ 35.194686] ? lockdep_init_map+0x9/0x10 [ 35.198731] ? __raw_spin_lock_init+0x2d/0x100 [ 35.203302] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 35.208298] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 35.213812] ? build_gc_manager+0x2a1/0x5b0 [ 35.218124] f2fs_fill_super+0x5f4e/0x7bf0 [ 35.222339] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 35.227340] ? f2fs_commit_super+0x400/0x400 [ 35.231726] ? lock_downgrade+0x8e0/0x8e0 [ 35.235854] ? lock_release+0xa10/0xa10 [ 35.239809] ? check_same_owner+0x320/0x320 [ 35.244111] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 35.249111] ? widen_string+0xd8/0x2d0 [ 35.252980] ? rcu_note_context_switch+0x710/0x710 [ 35.257887] ? format_decode+0xae0/0xae0 [ 35.261926] ? graph_lock+0x170/0x170 [ 35.265711] ? widen_string+0x2d0/0x2d0 [ 35.269667] ? sget_userns+0x2dd/0xf00 [ 35.273538] ? find_held_lock+0x13f/0x1c0 [ 35.277669] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 35.283187] ? bdev_name.isra.7+0x1a1/0x1f0 [ 35.287498] ? pointer+0x1b0/0xa20 [ 35.291030] ? netdev_bits+0xb0/0xb0 [ 35.294726] ? format_decode+0x1a9/0xae0 [ 35.298768] ? set_precision+0xe0/0xe0 [ 35.302649] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 35.307820] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 35.313339] ? vsnprintf+0x242/0x1b40 [ 35.317120] ? pointer+0xa20/0xa20 [ 35.320641] ? snprintf+0xa5/0xd0 [ 35.324074] ? vsprintf+0x40/0x40 [ 35.327513] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 35.332513] ? set_blocksize+0x2c4/0x350 [ 35.336570] mount_bdev+0x30c/0x3e0 [ 35.340182] ? f2fs_commit_super+0x400/0x400 [ 35.344573] ? mount_bdev+0x30c/0x3e0 [ 35.348353] ? f2fs_commit_super+0x400/0x400 [ 35.352739] f2fs_mount+0x34/0x40 [ 35.356183] mount_fs+0xae/0x328 [ 35.359530] vfs_kern_mount.part.34+0xd4/0x4d0 [ 35.364090] ? may_umount+0xb0/0xb0 [ 35.367698] ? _raw_read_unlock+0x22/0x30 [ 35.371833] ? __get_fs_type+0x97/0xc0 [ 35.375701] do_mount+0x564/0x3070 [ 35.379223] ? copy_mount_string+0x40/0x40 [ 35.383442] ? rcu_pm_notify+0xc0/0xc0 [ 35.387312] ? copy_mount_options+0x5f/0x380 [ 35.391700] ? rcu_read_lock_sched_held+0x108/0x120 [ 35.396708] ? kmem_cache_alloc_trace+0x616/0x780 [ 35.401543] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 35.407060] ? _copy_from_user+0xdf/0x150 [ 35.411194] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 35.416712] ? copy_mount_options+0x285/0x380 [ 35.421198] ksys_mount+0x12d/0x140 [ 35.424805] __x64_sys_mount+0xbe/0x150 [ 35.428758] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 35.433842] do_syscall_64+0x1b1/0x800 [ 35.437724] ? syscall_slow_exit_work+0x4f0/0x4f0 [ 35.442554] ? syscall_return_slowpath+0x5c0/0x5c0 [ 35.447469] ? syscall_return_slowpath+0x30f/0x5c0 [ 35.452381] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 35.457733] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 35.462567] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 35.467747] RIP: 0033:0x443dea [ 35.470915] RSP: 002b:00007ffcc7882368 EFLAGS: 00000297 ORIG_RAX: 00000000000000a5 [ 35.478601] RAX: ffffffffffffffda RBX: 0000000020000c00 RCX: 0000000000443dea [ 35.485848] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffcc7882370 [ 35.493095] RBP: 0000000000000003 R08: 0000000020016a00 R09: 000000000000000a [ 35.500344] R10: 0000000000000000 R11: 0000000000000297 R12: 0000000000000004 [ 35.508122] R13: 0000000000402ce0 R14: 0000000000000000 R15: 0000000000000000 [ 35.515373] Code: ff e9 4f fa ff ff e8 58 5a 82 fe 48 89 df e8 70 ee 9d fe e9 73 f8 ff ff e8 46 5a 82 fe 4d 8d 66 ff e9 5a f9 ff ff e8 38 5a 82 fe <0f> 0b 41 bc b6 ff ff ff e9 e2 fc ff ff 48 89 95 08 fc ff ff e8 [ 35.534519] RIP: __get_node_page+0xb68/0x16e0 RSP: ffff8801d960e820 [ 35.540970] ---[ end trace 4edbeb71f002bb76 ]--- [ 35.545749] Kernel panic - not syncing: Fatal exception [ 35.551627] Dumping ftrace buffer: [ 35.555149] (ftrace buffer empty) [ 35.558846] Kernel Offset: disabled [ 35.562452] Rebooting in 86400 seconds..