[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 16.501990] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 18.481235] random: sshd: uninitialized urandom read (32 bytes read) [ 18.806350] random: sshd: uninitialized urandom read (32 bytes read) [ 19.581571] random: sshd: uninitialized urandom read (32 bytes read) [ 19.717460] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.51' (ECDSA) to the list of known hosts. [ 25.451536] random: sshd: uninitialized urandom read (32 bytes read) executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 25.537057] nf_conntrack: default automatic helper assignment has been turned off for security reasons and CT-based firewall rule not found. Use the iptables CT target to attach helpers instead. [ 25.539628] nf_conntrack: default automatic helper assignment has been turned off for security reasons and CT-based firewall rule not found. Use the iptables CT target to attach helpers instead. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 33.877048] ================================================================== [ 33.885045] BUG: KASAN: use-after-free in work_is_static_object+0x39/0x40 [ 33.892031] Read of size 8 at addr ffff8801becb0660 by task kworker/1:1/40 [ 33.899255] [ 33.900907] CPU: 1 PID: 40 Comm: kworker/1:1 Not tainted 4.18.0-rc4-next-20180712+ #5 [ 33.908892] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.918300] Workqueue: events p9_poll_workfn [ 33.922735] Call Trace: executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 33.925351] dump_stack+0x1c9/0x2b4 [ 33.929100] ? dump_stack_print_info.cold.2+0x52/0x52 [ 33.935000] ? printk+0xa7/0xcf [ 33.938304] ? kmsg_dump_rewind_nolock+0xe4/0xe4 [ 33.943084] ? work_is_static_object+0x39/0x40 [ 33.947846] print_address_description+0x6c/0x20b [ 33.952712] ? work_is_static_object+0x39/0x40 [ 33.957322] kasan_report.cold.7+0x242/0x30d [ 33.961743] __asan_report_load8_noabort+0x14/0x20 [ 33.966682] work_is_static_object+0x39/0x40 [ 33.971105] debug_object_activate+0x2fc/0x690 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 33.975690] ? __wake_up_common+0x740/0x740 [ 33.980018] ? debug_object_assert_init+0x4b0/0x4b0 [ 33.985046] __queue_work+0x1ca/0x1410 [ 33.988940] ? __wake_up+0xe/0x10 [ 33.992592] ? p9_client_cb+0x62/0x80 [ 33.996422] ? flush_rcu_work+0x90/0x90 [ 34.000413] ? p9_fd_cancelled+0x2f0/0x2f0 [ 34.004669] ? lock_acquire+0x1e4/0x540 [ 34.008647] ? p9_poll_workfn+0x3ec/0x6d0 [ 34.012805] ? lock_downgrade+0x8f0/0x8f0 [ 34.016968] ? sock_poll+0x274/0x4b0 [ 34.020898] ? do_raw_spin_trylock+0x1c0/0x1c0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 34.025827] queue_work_on+0x19a/0x1e0 [ 34.029770] p9_poll_workfn+0x55e/0x6d0 [ 34.034096] ? p9_read_work+0x1060/0x1060 [ 34.038386] ? lock_acquire+0x1e4/0x540 [ 34.042402] ? process_one_work+0xb9b/0x1ba0 [ 34.046955] ? kasan_check_read+0x11/0x20 [ 34.051118] ? lock_release+0xa30/0xa30 [ 34.055120] ? kasan_check_read+0x11/0x20 [ 34.059297] ? do_raw_spin_unlock+0xa7/0x2f0 [ 34.063720] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 34.068315] ? read_word_at_a_time+0x20/0x20 [ 34.072754] ? compat_start_thread+0x80/0x80 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 34.077181] ? dequeue_entity+0x15e0/0x15e0 [ 34.081519] process_one_work+0xc73/0x1ba0 [ 34.085762] ? trace_hardirqs_on+0x10/0x10 [ 34.090012] ? pwq_dec_nr_in_flight+0x4a0/0x4a0 [ 34.094686] ? lock_repin_lock+0x430/0x430 [ 34.098967] ? __sched_text_start+0x8/0x8 [ 34.103135] ? lock_downgrade+0x8f0/0x8f0 [ 34.107287] ? graph_lock+0x170/0x170 [ 34.111202] ? lock_acquire+0x1e4/0x540 [ 34.115187] ? worker_thread+0x3dc/0x13c0 [ 34.119339] ? lock_downgrade+0x8f0/0x8f0 [ 34.123493] ? lock_release+0xa30/0xa30 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 34.127486] ? kasan_check_read+0x11/0x20 [ 34.131635] ? do_raw_spin_unlock+0xa7/0x2f0 [ 34.136067] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 34.140659] ? kasan_check_write+0x14/0x20 [ 34.144926] ? do_raw_spin_lock+0xc1/0x200 [ 34.149173] worker_thread+0x189/0x13c0 [ 34.153262] ? process_one_work+0x1ba0/0x1ba0 [ 34.157804] ? graph_lock+0x170/0x170 [ 34.161635] ? graph_lock+0x170/0x170 [ 34.165465] ? find_held_lock+0x36/0x1c0 [ 34.169546] ? kasan_check_read+0x11/0x20 [ 34.173726] ? do_raw_spin_unlock+0xa7/0x2f0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 34.178166] ? _raw_spin_unlock_irqrestore+0x74/0xc0 [ 34.183302] ? __kthread_parkme+0x58/0x1b0 [ 34.187581] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 34.192626] ? trace_hardirqs_on+0xd/0x10 [ 34.196814] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 34.202366] ? __kthread_parkme+0x106/0x1b0 [ 34.206690] kthread+0x345/0x410 [ 34.210056] ? process_one_work+0x1ba0/0x1ba0 [ 34.214541] ? kthread_bind+0x40/0x40 [ 34.219286] ret_from_fork+0x3a/0x50 [ 34.223287] [ 34.224930] Allocated by task 4429: executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 34.228571] save_stack+0x43/0xd0 [ 34.232142] kasan_kmalloc+0xc4/0xe0 [ 34.235879] kmem_cache_alloc_trace+0x152/0x780 [ 34.240571] p9_fd_create+0x1a7/0x3f0 [ 34.244389] p9_client_create+0x8ed/0x1770 [ 34.248629] v9fs_session_init+0x21a/0x1a80 [ 34.252982] v9fs_mount+0x7c/0x900 [ 34.256528] legacy_get_tree+0x118/0x440 [ 34.260657] vfs_get_tree+0x1cb/0x5c0 [ 34.264463] do_mount+0x6c1/0x1fb0 [ 34.268016] ksys_mount+0x12d/0x140 [ 34.271650] __x64_sys_mount+0xbe/0x150 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 34.275733] do_syscall_64+0x1b9/0x820 [ 34.279625] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 34.284868] [ 34.286503] Freed by task 4429: [ 34.289796] save_stack+0x43/0xd0 [ 34.293348] __kasan_slab_free+0x11a/0x170 [ 34.297939] kasan_slab_free+0xe/0x10 [ 34.302058] kfree+0xd9/0x260 [ 34.305315] p9_fd_close+0x416/0x5b0 [ 34.309139] p9_client_create+0xa9a/0x1770 [ 34.313367] v9fs_session_init+0x21a/0x1a80 [ 34.317680] v9fs_mount+0x7c/0x900 [ 34.321492] legacy_get_tree+0x118/0x440 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 34.325841] vfs_get_tree+0x1cb/0x5c0 [ 34.329657] do_mount+0x6c1/0x1fb0 [ 34.333756] ksys_mount+0x12d/0x140 [ 34.337407] __x64_sys_mount+0xbe/0x150 [ 34.341382] do_syscall_64+0x1b9/0x820 [ 34.345535] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 34.350718] [ 34.352350] The buggy address belongs to the object at ffff8801becb0540 [ 34.352350] which belongs to the cache kmalloc-512 of size 512 [ 34.365213] The buggy address is located 288 bytes inside of [ 34.365213] 512-byte region [ffff8801becb0540, ffff8801becb0740) executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 34.377086] The buggy address belongs to the page: [ 34.382000] page:ffffea0006fb2c00 count:1 mapcount:0 mapping:ffff8801da800940 index:0x0 [ 34.390121] flags: 0x2fffc0000000100(slab) [ 34.394510] raw: 02fffc0000000100 ffffea00071378c8 ffffea0006e78908 ffff8801da800940 [ 34.402374] raw: 0000000000000000 ffff8801becb0040 0000000100000006 0000000000000000 [ 34.410231] page dumped because: kasan: bad access detected [ 34.416785] [ 34.418410] Memory state around the buggy address: executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 34.423328] ffff8801becb0500: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb [ 34.431451] ffff8801becb0580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 34.441217] >ffff8801becb0600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 34.449293] ^ [ 34.455775] ffff8801becb0680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 34.463198] ffff8801becb0700: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 34.470564] ================================================================== executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 34.477916] Kernel panic - not syncing: panic_on_warn set ... [ 34.477916] [ 34.485309] CPU: 1 PID: 40 Comm: kworker/1:1 Tainted: G B 4.18.0-rc4-next-20180712+ #5 [ 34.495401] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.505190] Workqueue: events p9_poll_workfn [ 34.511926] Call Trace: [ 34.515690] dump_stack+0x1c9/0x2b4 [ 34.519329] ? dump_stack_print_info.cold.2+0x52/0x52 [ 34.525291] ? lock_downgrade+0x8f0/0x8f0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 34.529782] ? work_is_static_object+0x39/0x40 [ 34.534485] panic+0x238/0x4e7 [ 34.537913] ? add_taint.cold.5+0x16/0x16 [ 34.542418] ? print_shadow_for_address+0xba/0x116 [ 34.547468] ? do_raw_spin_unlock+0xa7/0x2f0 [ 34.551900] ? work_is_static_object+0x39/0x40 [ 34.557061] kasan_end_report+0x47/0x4f [ 34.561241] kasan_report.cold.7+0x76/0x30d [ 34.565600] __asan_report_load8_noabort+0x14/0x20 [ 34.571384] work_is_static_object+0x39/0x40 [ 34.575820] debug_object_activate+0x2fc/0x690 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 34.580389] ? __wake_up_common+0x740/0x740 [ 34.584697] ? debug_object_assert_init+0x4b0/0x4b0 [ 34.589703] __queue_work+0x1ca/0x1410 [ 34.593588] ? __wake_up+0xe/0x10 [ 34.597233] ? p9_client_cb+0x62/0x80 [ 34.601301] ? flush_rcu_work+0x90/0x90 [ 34.606475] ? p9_fd_cancelled+0x2f0/0x2f0 [ 34.611854] ? lock_acquire+0x1e4/0x540 [ 34.615848] ? p9_poll_workfn+0x3ec/0x6d0 [ 34.620568] ? lock_downgrade+0x8f0/0x8f0 [ 34.625399] ? sock_poll+0x274/0x4b0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 34.629274] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 34.634307] queue_work_on+0x19a/0x1e0 [ 34.638286] p9_poll_workfn+0x55e/0x6d0 [ 34.642649] ? p9_read_work+0x1060/0x1060 [ 34.646922] ? lock_acquire+0x1e4/0x540 [ 34.650908] ? process_one_work+0xb9b/0x1ba0 [ 34.655328] ? kasan_check_read+0x11/0x20 [ 34.659896] ? lock_release+0xa30/0xa30 [ 34.663866] ? kasan_check_read+0x11/0x20 [ 34.668103] ? do_raw_spin_unlock+0xa7/0x2f0 [ 34.672491] ? do_raw_spin_trylock+0x1c0/0x1c0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 34.677149] ? read_word_at_a_time+0x20/0x20 [ 34.681718] ? compat_start_thread+0x80/0x80 [ 34.686118] ? dequeue_entity+0x15e0/0x15e0 [ 34.690945] process_one_work+0xc73/0x1ba0 [ 34.695206] ? trace_hardirqs_on+0x10/0x10 [ 34.699472] ? pwq_dec_nr_in_flight+0x4a0/0x4a0 [ 34.704174] ? lock_repin_lock+0x430/0x430 [ 34.708444] ? __sched_text_start+0x8/0x8 [ 34.712984] ? lock_downgrade+0x8f0/0x8f0 [ 34.717191] ? graph_lock+0x170/0x170 [ 34.721028] ? lock_acquire+0x1e4/0x540 [ 34.725010] ? worker_thread+0x3dc/0x13c0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 34.729215] ? lock_downgrade+0x8f0/0x8f0 [ 34.733357] ? lock_release+0xa30/0xa30 [ 34.737329] ? kasan_check_read+0x11/0x20 [ 34.741475] ? do_raw_spin_unlock+0xa7/0x2f0 [ 34.745908] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 34.750528] ? kasan_check_write+0x14/0x20 [ 34.755206] ? do_raw_spin_lock+0xc1/0x200 [ 34.760111] worker_thread+0x189/0x13c0 [ 34.764221] ? process_one_work+0x1ba0/0x1ba0 [ 34.768754] ? graph_lock+0x170/0x170 [ 34.772597] ? graph_lock+0x170/0x170 [ 34.776402] ? find_held_lock+0x36/0x1c0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 34.780472] ? kasan_check_read+0x11/0x20 [ 34.784628] ? do_raw_spin_unlock+0xa7/0x2f0 [ 34.789059] ? _raw_spin_unlock_irqrestore+0x74/0xc0 [ 34.794187] ? __kthread_parkme+0x58/0x1b0 [ 34.798444] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 34.803550] ? trace_hardirqs_on+0xd/0x10 [ 34.807710] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 34.813261] ? __kthread_parkme+0x106/0x1b0 [ 34.817667] kthread+0x345/0x410 [ 34.821049] ? process_one_work+0x1ba0/0x1ba0 [ 34.825562] ? kthread_bind+0x40/0x40 [ 34.829359] ret_from_fork+0x3a/0x50 [ 34.833598] Dumping ftrace buffer: [ 34.837121] (ftrace buffer empty) [ 34.841121] Kernel Offset: disabled [ 34.844729] Rebooting in 86400 seconds..