[ 28.654057] kauditd_printk_skb: 7 callbacks suppressed [ 28.654071] audit: type=1800 audit(1542388890.585:28): pid=5902 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 29.387257] audit: type=1800 audit(1542388891.315:29): pid=5902 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 29.406657] audit: type=1800 audit(1542388891.315:30): pid=5902 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 33.380004] sshd (6043) used greatest stack depth: 15744 bytes left Warning: Permanently added '10.128.0.50' (ECDSA) to the list of known hosts. executing program [ 40.126289] IPVS: ftp: loaded support on port[0] = 21 [ 40.331196] WARNING: CPU: 0 PID: 6062 at fs/fuse/inode.c:119 fuse_destroy_inode+0x251/0x2c0 [ 40.339810] Kernel panic - not syncing: panic_on_warn set ... [ 40.345698] CPU: 0 PID: 6062 Comm: syz-executor067 Not tainted 4.20.0-rc2+ #337 [ 40.353127] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.362462] Call Trace: [ 40.365037] dump_stack+0x244/0x39d [ 40.368663] ? dump_stack_print_info.cold.1+0x20/0x20 [ 40.373850] panic+0x2ad/0x55c [ 40.377057] ? add_taint.cold.5+0x16/0x16 [ 40.381204] ? __warn.cold.8+0x5/0x45 [ 40.385009] ? __warn+0xe8/0x1d0 [ 40.388360] ? fuse_destroy_inode+0x251/0x2c0 [ 40.392839] __warn.cold.8+0x20/0x45 [ 40.396539] ? rcu_softirq_qs+0x20/0x20 [ 40.400498] ? fuse_destroy_inode+0x251/0x2c0 [ 40.404977] report_bug+0x254/0x2d0 [ 40.408592] do_error_trap+0x11b/0x200 [ 40.412467] do_invalid_op+0x36/0x40 [ 40.416163] ? fuse_destroy_inode+0x251/0x2c0 [ 40.420653] invalid_op+0x14/0x20 [ 40.424123] RIP: 0010:fuse_destroy_inode+0x251/0x2c0 [ 40.429243] Code: 41 c6 44 15 00 f8 0f 84 8c fe ff ff e8 c8 f2 f2 fe 0f 0b e9 80 fe ff ff 48 89 df e8 b9 3f 36 ff e9 50 fe ff ff e8 af f2 f2 fe <0f> 0b e9 6a ff ff ff e8 e3 3f 36 ff e9 90 fe ff ff e8 29 5a bc fe [ 40.448128] RSP: 0018:ffff8881c12fe818 EFLAGS: 00010293 [ 40.453477] RAX: ffff8881d82b22c0 RBX: ffff8881b21855c0 RCX: 1ffff1103825fd08 [ 40.460735] RDX: 0000000000000000 RSI: ffffffff828c9531 RDI: 0000000000000003 [ 40.467994] RBP: ffff8881c12fe8e8 R08: ffff8881d82b22c0 R09: 0000000000000008 [ 40.475250] R10: 0000000000000002 R11: ffff8881d82b22c0 R12: 1ffff1103825fd04 [ 40.482508] R13: 1ffff1103825fd08 R14: ffff8881c12fe8c0 R15: ffff8881b2185998 [ 40.489795] ? fuse_destroy_inode+0x251/0x2c0 [ 40.494282] ? fuse_destroy_inode+0x251/0x2c0 [ 40.498765] ? fuse_evict_inode+0x1e0/0x1e0 [ 40.503073] ? evict+0x5d8/0x980 [ 40.506426] ? lock_downgrade+0x900/0x900 [ 40.510564] ? fuse_evict_inode+0x1e0/0x1e0 [ 40.514870] destroy_inode+0x159/0x200 [ 40.518743] ? __destroy_inode+0x820/0x820 [ 40.522966] ? fuse_queue_forget+0x138/0x190 [ 40.527365] evict+0x5e0/0x980 [ 40.530545] ? destroy_inode+0x200/0x200 [ 40.534591] ? iput+0x671/0xa90 [ 40.537860] ? lock_downgrade+0x900/0x900 [ 40.541997] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 40.547526] ? kasan_check_read+0x11/0x20 [ 40.551660] ? do_raw_spin_trylock+0x270/0x270 [ 40.556235] ? find_held_lock+0x36/0x1c0 [ 40.560286] iput+0x679/0xa90 [ 40.563400] ? inode_add_lru+0x2a0/0x2a0 [ 40.567455] ? d_walk+0x797/0xc70 [ 40.570895] ? kasan_check_read+0x11/0x20 [ 40.575030] ? do_raw_spin_unlock+0xa7/0x330 [ 40.579421] ? do_raw_spin_trylock+0x270/0x270 [ 40.583991] ? print_usage_bug+0xc0/0xc0 [ 40.588039] ? do_raw_spin_unlock+0xa7/0x330 [ 40.592441] dentry_unlink_inode+0x461/0x5e0 [ 40.596844] ? d_lru_del+0x130/0x130 [ 40.600548] ? zap_class+0x640/0x640 [ 40.604249] ? d_walk+0x797/0xc70 [ 40.607695] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 40.613222] ? lockref_mark_dead+0xef/0x170 [ 40.617528] ? lockref_get_not_dead+0x90/0x90 [ 40.622019] ? lock_acquire+0x1ed/0x520 [ 40.625982] __dentry_kill+0x44c/0x7a0 [ 40.629857] ? d_drop+0x70/0x70 [ 40.633123] ? lock_downgrade+0x900/0x900 [ 40.637272] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 40.642201] ? kasan_check_read+0x11/0x20 [ 40.646355] dentry_kill+0xc9/0x680 [ 40.649985] dput.part.25+0x660/0x860 [ 40.653776] ? shrink_dcache_sb+0x350/0x350 [ 40.658088] do_one_tree+0x37/0x40 [ 40.661615] shrink_dcache_for_umount+0xc7/0x2b0 [ 40.666357] ? lock_downgrade+0x900/0x900 [ 40.670493] ? d_set_mounted+0x2e0/0x2e0 [ 40.674538] ? lock_release+0xa00/0xa00 [ 40.678498] ? perf_trace_sched_process_exec+0x860/0x860 [ 40.683933] ? unregister_shrinker+0x270/0x460 [ 40.688613] generic_shutdown_super+0xd5/0x530 [ 40.693192] ? destroy_super_rcu+0x210/0x210 [ 40.697586] ? up_write+0x7b/0x220 [ 40.701111] ? down_write_nested+0x130/0x130 [ 40.705511] ? down_read+0x120/0x120 [ 40.709273] ? prepare_kswapd_sleep+0x220/0x220 [ 40.714095] kill_anon_super+0x3e/0x60 [ 40.717971] fuse_kill_sb_anon+0x1d/0x20 [ 40.722019] deactivate_locked_super+0x97/0x100 [ 40.726786] deactivate_super+0x2bb/0x320 [ 40.730926] ? get_super_exclusive_thawed+0x20/0x20 [ 40.735935] ? fsnotify_destroy_marks+0x1d2/0x270 [ 40.740770] ? shrink_dcache_sb+0x350/0x350 [ 40.745100] ? cpumask_next+0x41/0x50 [ 40.749004] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 40.754148] ? mnt_get_writers.isra.26+0xf8/0x150 [ 40.758987] cleanup_mnt+0xbf/0x160 [ 40.762604] __cleanup_mnt+0x16/0x20 [ 40.766307] task_work_run+0x1e8/0x2a0 [ 40.770194] ? task_work_cancel+0x240/0x240 [ 40.774626] ? switch_task_namespaces+0xb8/0xd0 [ 40.779340] do_exit+0x1ad6/0x26d0 [ 40.782878] ? do_raw_spin_trylock+0x251/0x270 [ 40.787478] ? mm_update_next_owner+0x990/0x990 [ 40.792237] ? print_usage_bug+0xc0/0xc0 [ 40.796296] ? zap_class+0x640/0x640 [ 40.800002] ? find_held_lock+0x36/0x1c0 [ 40.804157] ? __lock_acquire+0x62f/0x4c20 [ 40.808385] ? lock_downgrade+0x900/0x900 [ 40.812527] ? mark_held_locks+0x130/0x130 [ 40.816855] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 40.822038] ? drop_futex_key_refs.isra.14+0x6d/0xe0 [ 40.827123] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 40.832644] ? futex_wait+0x5ec/0xa50 [ 40.836432] ? futex_wait_setup+0x3e0/0x3e0 [ 40.840743] ? drop_futex_key_refs.isra.14+0x6d/0xe0 [ 40.845948] ? futex_wake+0x304/0x760 [ 40.849744] ? zap_class+0x640/0x640 [ 40.853449] ? memset+0x31/0x40 [ 40.856722] ? find_held_lock+0x36/0x1c0 [ 40.860780] ? get_signal+0x95b/0x1980 [ 40.864663] ? _raw_spin_unlock_irq+0x27/0x80 [ 40.869150] ? _raw_spin_unlock_irq+0x27/0x80 [ 40.873654] do_group_exit+0x177/0x440 [ 40.877539] ? trace_hardirqs_off_caller+0x310/0x310 [ 40.882637] ? __ia32_sys_exit+0x50/0x50 [ 40.886699] get_signal+0x8b0/0x1980 [ 40.890404] ? ptrace_notify+0x130/0x130 [ 40.894461] ? filename_lookup+0x39f/0x520 [ 40.898758] ? filename_parentat.isra.56+0x570/0x570 [ 40.903854] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 40.909385] ? digsig_verify+0x1530/0x1530 [ 40.913620] do_signal+0x9c/0x21c0 [ 40.917154] ? getname_flags+0x26e/0x590 [ 40.921216] ? user_path_at_empty+0x40/0x50 [ 40.925524] ? setup_sigcontext+0x7d0/0x7d0 [ 40.929869] ? vfs_statx+0x17a/0x210 [ 40.933692] ? exit_to_usermode_loop+0x8c/0x380 [ 40.938352] ? exit_to_usermode_loop+0x8c/0x380 [ 40.943079] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 40.947655] ? trace_hardirqs_on+0xbd/0x310 [ 40.952075] ? do_syscall_64+0x6be/0x820 [ 40.956131] ? __x64_sys_futex+0x47f/0x6a0 [ 40.960644] exit_to_usermode_loop+0x2e5/0x380 [ 40.965220] ? __bpf_trace_sys_exit+0x30/0x30 [ 40.969704] ? trace_hardirqs_off+0xb8/0x310 [ 40.974124] do_syscall_64+0x6be/0x820 [ 40.978005] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 40.983470] ? syscall_return_slowpath+0x5e0/0x5e0 [ 40.988435] ? trace_hardirqs_on_caller+0x310/0x310 [ 40.993443] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 40.998448] ? post_copy_siginfo_from_user.isra.25.part.26+0x250/0x250 [ 41.005098] ? __switch_to_asm+0x40/0x70 [ 41.009263] ? __switch_to_asm+0x34/0x70 [ 41.013426] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 41.018286] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 41.023466] RIP: 0033:0x445f79 [ 41.026660] Code: Bad RIP value. [ 41.030013] RSP: 002b:00007fe86699cda8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 41.037711] RAX: fffffffffffffe00 RBX: 00000000006dbc38 RCX: 0000000000445f79 [ 41.044969] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00000000006dbc38 [ 41.052225] RBP: 00000000006dbc30 R08: 0000000000000000 R09: 0000000000000000 [ 41.059485] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc3c [ 41.066745] R13: 2f30656c69662f2e R14: 0000000100000001 R15: 0000000000000001 [ 41.075216] Kernel Offset: disabled [ 41.078910] Rebooting in 86400 seconds..