[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 75.629071][ T30] audit: type=1800 audit(1565031239.673:25): pid=11165 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 75.652622][ T30] audit: type=1800 audit(1565031239.703:26): pid=11165 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 75.697217][ T30] audit: type=1800 audit(1565031239.723:27): pid=11165 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 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. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.15.215' (ECDSA) to the list of known hosts. 2019/08/05 18:54:12 fuzzer started 2019/08/05 18:54:17 dialing manager at 10.128.0.26:46627 2019/08/05 18:54:18 syscalls: 2367 2019/08/05 18:54:18 code coverage: enabled 2019/08/05 18:54:18 comparison tracing: CONFIG_KCOV_ENABLE_COMPARISONS is not enabled 2019/08/05 18:54:18 extra coverage: enabled 2019/08/05 18:54:18 setuid sandbox: enabled 2019/08/05 18:54:18 namespace sandbox: enabled 2019/08/05 18:54:18 Android sandbox: /sys/fs/selinux/policy does not exist 2019/08/05 18:54:18 fault injection: enabled 2019/08/05 18:54:18 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/08/05 18:54:18 net packet injection: enabled 2019/08/05 18:54:18 net device setup: enabled syzkaller login: [ 197.537901][ C0] ================================================================== [ 197.545995][ C0] BUG: KMSAN: uninit-value in kmem_cache_alloc_node+0x5d0/0xe70 [ 197.553606][ C0] CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 5.3.0-rc3+ #16 [ 197.560947][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 197.570976][ C0] Call Trace: [ 197.574248][ C0] dump_stack+0x191/0x1f0 [ 197.578555][ C0] kmsan_report+0x162/0x2d0 [ 197.583042][ C0] __msan_warning+0x75/0xe0 [ 197.587524][ C0] kmem_cache_alloc_node+0x5d0/0xe70 [ 197.592789][ C0] ? __alloc_skb+0x215/0xa10 [ 197.597364][ C0] __alloc_skb+0x215/0xa10 [ 197.601762][ C0] aoecmd_cfg+0x205/0xa80 [ 197.606094][ C0] discover_timer+0x86/0xa0 [ 197.610575][ C0] call_timer_fn+0x232/0x530 [ 197.615143][ C0] ? skbfree+0x4a0/0x4a0 [ 197.619366][ C0] __run_timers+0xcdc/0x11a0 [ 197.623946][ C0] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 197.629990][ C0] ? skbfree+0x4a0/0x4a0 [ 197.634216][ C0] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 197.640168][ C0] run_timer_softirq+0x2d/0x50 [ 197.644910][ C0] ? timers_dead_cpu+0x9d0/0x9d0 [ 197.649826][ C0] __do_softirq+0x4a1/0x83a [ 197.654313][ C0] ? ksoftirqd_should_run+0x30/0x30 [ 197.659485][ C0] ? takeover_tasklets+0x900/0x900 [ 197.664575][ C0] run_ksoftirqd+0x25/0x40 [ 197.668969][ C0] smpboot_thread_fn+0x4a3/0x990 [ 197.673890][ C0] kthread+0x4b5/0x4f0 [ 197.677935][ C0] ? cpu_report_death+0x190/0x190 [ 197.682936][ C0] ? kthread_blkcg+0xf0/0xf0 [ 197.687503][ C0] ret_from_fork+0x35/0x40 [ 197.691901][ C0] [ 197.694204][ C0] Uninit was stored to memory at: [ 197.699202][ C0] kmsan_internal_chain_origin+0xcc/0x150 [ 197.704894][ C0] __msan_chain_origin+0x6b/0xe0 [ 197.709806][ C0] ___slab_alloc+0x1dbc/0x1fb0 [ 197.714543][ C0] kmem_cache_alloc_node+0x769/0xe70 [ 197.719804][ C0] __alloc_skb+0x215/0xa10 [ 197.724196][ C0] aoecmd_cfg+0x205/0xa80 [ 197.728499][ C0] discover_timer+0x86/0xa0 [ 197.732974][ C0] call_timer_fn+0x232/0x530 [ 197.737535][ C0] __run_timers+0xcdc/0x11a0 [ 197.742097][ C0] run_timer_softirq+0x2d/0x50 [ 197.746850][ C0] __do_softirq+0x4a1/0x83a [ 197.751330][ C0] run_ksoftirqd+0x25/0x40 [ 197.755729][ C0] smpboot_thread_fn+0x4a3/0x990 [ 197.760643][ C0] kthread+0x4b5/0x4f0 [ 197.764683][ C0] ret_from_fork+0x35/0x40 [ 197.769066][ C0] [ 197.771366][ C0] Uninit was created at: [ 197.775581][ C0] kmsan_internal_poison_shadow+0x53/0xa0 [ 197.781273][ C0] kmsan_slab_free+0x8d/0x100 [ 197.785941][ C0] kmem_cache_free_bulk+0x3ad9/0x3f50 [ 197.791289][ C0] __kfree_skb_flush+0xb0/0x100 [ 197.796115][ C0] net_rx_action+0x1908/0x1950 [ 197.800853][ C0] __do_softirq+0x4a1/0x83a [ 197.805331][ C0] irq_exit+0x230/0x280 [ 197.809463][ C0] do_IRQ+0x20d/0x3a0 [ 197.813418][ C0] ret_from_intr+0x0/0x33 [ 197.817723][ C0] __msan_metadata_ptr_for_load_8+0x10/0x20 [ 197.823595][ C0] ipv4_conntrack_defrag+0x24a/0x7d0 [ 197.828860][ C0] nf_hook_slow+0x18b/0x3f0 [ 197.833341][ C0] __ip_local_out+0x69b/0x800 [ 197.838002][ C0] __ip_queue_xmit+0x1bdc/0x21f0 [ 197.842912][ C0] ip_queue_xmit+0xcc/0xf0 [ 197.847302][ C0] __tcp_transmit_skb+0x409e/0x5c60 [ 197.852475][ C0] __tcp_send_ack+0x701/0x840 [ 197.857125][ C0] tcp_send_ack+0x68/0x90 [ 197.861426][ C0] tcp_cleanup_rbuf+0x764/0x800 [ 197.866248][ C0] tcp_recvmsg+0x334d/0x4ff0 [ 197.870811][ C0] inet_recvmsg+0x237/0x7d0 [ 197.875291][ C0] sock_read_iter+0x5be/0x660 [ 197.879941][ C0] __vfs_read+0xa67/0xc90 [ 197.884240][ C0] vfs_read+0x359/0x6f0 [ 197.888366][ C0] ksys_read+0x265/0x430 [ 197.892766][ C0] __se_sys_read+0x92/0xb0 [ 197.897176][ C0] __x64_sys_read+0x4a/0x70 [ 197.901654][ C0] do_syscall_64+0xbc/0xf0 [ 197.906043][ C0] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 197.911903][ C0] ================================================================== [ 197.919934][ C0] Disabling lock debugging due to kernel taint [ 197.926057][ C0] Kernel panic - not syncing: panic_on_warn set ... [ 197.932621][ C0] CPU: 0 PID: 9 Comm: ksoftirqd/0 Tainted: G B 5.3.0-rc3+ #16 [ 197.941384][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 197.951412][ C0] Call Trace: [ 197.954691][ C0] dump_stack+0x191/0x1f0 [ 197.959001][ C0] panic+0x3c9/0xc1e [ 197.962886][ C0] kmsan_report+0x2ca/0x2d0 [ 197.967367][ C0] __msan_warning+0x75/0xe0 [ 197.971855][ C0] kmem_cache_alloc_node+0x5d0/0xe70 [ 197.977115][ C0] ? __alloc_skb+0x215/0xa10 [ 197.981694][ C0] __alloc_skb+0x215/0xa10 [ 197.986096][ C0] aoecmd_cfg+0x205/0xa80 [ 197.990440][ C0] discover_timer+0x86/0xa0 [ 197.994924][ C0] call_timer_fn+0x232/0x530 [ 197.999492][ C0] ? skbfree+0x4a0/0x4a0 [ 198.003715][ C0] __run_timers+0xcdc/0x11a0 [ 198.008283][ C0] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 198.014352][ C0] ? skbfree+0x4a0/0x4a0 [ 198.018582][ C0] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 198.024538][ C0] run_timer_softirq+0x2d/0x50 [ 198.029272][ C0] ? timers_dead_cpu+0x9d0/0x9d0 [ 198.034190][ C0] __do_softirq+0x4a1/0x83a [ 198.038676][ C0] ? ksoftirqd_should_run+0x30/0x30 [ 198.043852][ C0] ? takeover_tasklets+0x900/0x900 [ 198.048961][ C0] run_ksoftirqd+0x25/0x40 [ 198.053366][ C0] smpboot_thread_fn+0x4a3/0x990 [ 198.058286][ C0] kthread+0x4b5/0x4f0 [ 198.062332][ C0] ? cpu_report_death+0x190/0x190 [ 198.067335][ C0] ? kthread_blkcg+0xf0/0xf0 [ 198.071918][ C0] ret_from_fork+0x35/0x40 [ 198.077405][ C0] Kernel Offset: disabled [ 198.081726][ C0] Rebooting in 86400 seconds..