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 'ci-upstream-kasan-gce-3,10.128.15.205' (ECDSA) to the list of known hosts. executing program unlink(./0/file0/fb) failed (errno 1) executing program unlink(./0/file0/fb) failed (errno 1) executing program unlink(./0/file0/fb) failed (errno 1) executing program unlink(./0/file0/fb) failed (errno 1) executing program unlink(./0/file0/fb) failed (errno 1) executing program unlink(./0/file0/fb) failed (errno 1) executing program unlink(./0/file0/fb) failed (errno 1) executing program unlink(./0/file0/fb) failed (errno 1) syzkaller login: [ 26.105280] WARNING: CPU: 0 PID: 63 at net/xfrm/xfrm_state.c:2322 xfrm_state_fini+0x46a/0x620 [ 26.106696] Kernel panic - not syncing: panic_on_warn set ... [ 26.106696] [ 26.107686] CPU: 0 PID: 63 Comm: kworker/u4:2 Not tainted 4.15.0-rc2+ #206 [ 26.108683] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 26.109908] Workqueue: netns cleanup_net [ 26.110453] Call Trace: [ 26.110811] dump_stack+0x194/0x257 [ 26.111325] ? arch_local_irq_restore+0x53/0x53 [ 26.111963] ? vsnprintf+0x1ed/0x1900 [ 26.112481] panic+0x1e4/0x41c [ 26.112914] ? refcount_error_report+0x214/0x214 [ 26.113548] ? show_regs_print_info+0x65/0x65 [ 26.114154] ? __warn+0x1c1/0x200 [ 26.114627] ? xfrm_state_fini+0x46a/0x620 [ 26.115193] __warn+0x1dc/0x200 [ 26.115638] ? xfrm_state_fini+0x46a/0x620 [ 26.116233] report_bug+0x211/0x2d0 [ 26.116730] fixup_bug.part.11+0x37/0x80 [ 26.117275] do_error_trap+0x2d7/0x3e0 [ 26.117803] ? math_error+0x400/0x400 [ 26.118316] ? __local_bh_enable_ip+0x121/0x230 [ 26.118960] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 26.119627] ? xfrm_state_flush+0x557/0x630 [ 26.120206] ? trace_hardirqs_on+0xd/0x10 [ 26.120767] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 26.121419] do_invalid_op+0x1b/0x20 [ 26.121918] invalid_op+0x18/0x20 [ 26.122386] RIP: 0010:xfrm_state_fini+0x46a/0x620 [ 26.123027] RSP: 0018:ffff8801d98170f0 EFLAGS: 00010293 [ 26.123738] RAX: ffff8801d980a4c0 RBX: ffff8801cbdf8040 RCX: ffffffff8463700a [ 26.124692] RDX: 0000000000000000 RSI: 1ffff1003b3015b9 RDI: ffffed003b302e10 [ 26.127029] RBP: ffff8801d9817248 R08: 1ffff1003b302da4 R09: 0000000000000000 [ 26.134268] R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff1003b302e20 [ 26.141505] R13: ffff8801d9817220 R14: 1ffff1003b302e24 R15: ffff8801cbdf9500 [ 26.148756] ? xfrm_state_fini+0x46a/0x620 [ 26.152968] ? xfrm_state_init+0x4a0/0x4a0 [ 26.157182] ? mark_held_locks+0xb2/0x100 [ 26.161301] ? kfree+0xe4/0x250 [ 26.164551] ? xfrm_sysctl_fini+0x63/0x80 [ 26.168669] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 26.173655] ? trace_hardirqs_on+0xd/0x10 [ 26.177776] ? xfrm_policy_fini+0x550/0x550 [ 26.182068] xfrm_net_exit+0x25/0x30 [ 26.185751] ops_exit_list.isra.6+0xae/0x150 [ 26.190130] cleanup_net+0x5c7/0xb60 [ 26.193817] ? unregister_pernet_device+0x80/0x80 [ 26.198636] ? find_held_lock+0x39/0x1d0 [ 26.202670] ? check_noncircular+0x20/0x20 [ 26.206884] ? process_one_work+0xb2f/0x1be0 [ 26.211271] ? __lock_is_held+0xbc/0x140 [ 26.215312] process_one_work+0xbfd/0x1be0 [ 26.219528] ? pwq_dec_nr_in_flight+0x450/0x450 [ 26.224166] ? finish_task_switch+0x1d3/0x740 [ 26.228628] ? finish_task_switch+0x1aa/0x740 [ 26.233117] ? __sched_text_start+0x8/0x8 [ 26.237236] ? debug_check_no_locks_freed+0x3d0/0x3d0 [ 26.242397] ? select_task_rq_fair+0x2770/0x2770 [ 26.247118] ? check_noncircular+0x20/0x20 [ 26.251327] ? find_held_lock+0x39/0x1d0 [ 26.255367] ? lock_acquire+0x1d5/0x580 [ 26.259306] ? worker_thread+0x4a3/0x1990 [ 26.263430] ? lock_release+0xda0/0xda0 [ 26.267372] ? worker_pool_assign_id+0x1b0/0x1b0 [ 26.272116] ? do_raw_spin_trylock+0x190/0x190 [ 26.276679] worker_thread+0x223/0x1990 [ 26.280641] ? process_one_work+0x1be0/0x1be0 [ 26.285105] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 26.290094] ? account_kernel_stack+0x155/0x1f0 [ 26.294736] ? put_task_stack+0x116/0x270 [ 26.298855] ? finish_task_switch+0x4cc/0x740 [ 26.303320] ? copy_overflow+0x20/0x20 [ 26.307188] ? __schedule+0x8f3/0x2060 [ 26.311051] ? check_noncircular+0x20/0x20 [ 26.315268] ? find_held_lock+0x39/0x1d0 [ 26.319304] ? find_held_lock+0x39/0x1d0 [ 26.323343] ? lock_downgrade+0x980/0x980 [ 26.327460] ? default_wake_function+0x30/0x50 [ 26.332017] ? __schedule+0x2060/0x2060 [ 26.335966] ? do_wait_intr+0x3e0/0x3e0 [ 26.339910] ? do_raw_spin_trylock+0x190/0x190 [ 26.344464] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 26.349536] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 26.354519] ? trace_hardirqs_on+0xd/0x10 [ 26.358632] ? __kthread_parkme+0x175/0x240 [ 26.362922] kthread+0x37a/0x440 [ 26.366258] ? process_one_work+0x1be0/0x1be0 [ 26.370718] ? kthread_stop+0x7b0/0x7b0 [ 26.374660] ret_from_fork+0x24/0x30 [ 26.379033] Dumping ftrace buffer: [ 26.382623] (ftrace buffer empty) [ 26.386302] Kernel Offset: disabled [ 26.389901] Rebooting in 86400 seconds..