[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 86.558554][ T31] audit: type=1800 audit(1568259482.608:25): pid=12788 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 86.593232][ T31] audit: type=1800 audit(1568259482.628:26): pid=12788 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 86.613690][ T31] audit: type=1800 audit(1568259482.638:27): pid=12788 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 '10.128.15.200' (ECDSA) to the list of known hosts. 2019/09/12 03:38:15 fuzzer started 2019/09/12 03:38:19 dialing manager at 10.128.0.26:44845 2019/09/12 03:38:19 syscalls: 2376 2019/09/12 03:38:19 code coverage: enabled 2019/09/12 03:38:19 comparison tracing: CONFIG_KCOV_ENABLE_COMPARISONS is not enabled 2019/09/12 03:38:19 extra coverage: enabled 2019/09/12 03:38:19 setuid sandbox: enabled 2019/09/12 03:38:19 namespace sandbox: enabled 2019/09/12 03:38:19 Android sandbox: /sys/fs/selinux/policy does not exist 2019/09/12 03:38:19 fault injection: enabled 2019/09/12 03:38:19 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/09/12 03:38:19 net packet injection: enabled 2019/09/12 03:38:19 net device setup: enabled syzkaller login: [ 136.096811][ C1] ================================================================== [ 136.105241][ C1] BUG: KMSAN: uninit-value in kmem_cache_alloc_node+0x5d0/0xe70 [ 136.112860][ C1] CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.3.0-rc7+ #0 [ 136.120210][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 136.130377][ C1] Call Trace: [ 136.133656][ C1] dump_stack+0x191/0x1f0 [ 136.137968][ C1] kmsan_report+0x162/0x2d0 [ 136.142450][ C1] __msan_warning+0x75/0xe0 [ 136.146939][ C1] kmem_cache_alloc_node+0x5d0/0xe70 [ 136.152211][ C1] ? __alloc_skb+0x215/0xa10 [ 136.156794][ C1] __alloc_skb+0x215/0xa10 [ 136.161207][ C1] aoecmd_cfg+0x205/0xa80 [ 136.165527][ C1] discover_timer+0x86/0xa0 [ 136.170011][ C1] call_timer_fn+0x232/0x530 [ 136.174591][ C1] ? skbfree+0x4a0/0x4a0 [ 136.178819][ C1] __run_timers+0xcdc/0x11a0 [ 136.183394][ C1] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 136.190046][ C1] ? skbfree+0x4a0/0x4a0 [ 136.194273][ C1] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 136.200242][ C1] run_timer_softirq+0x2d/0x50 [ 136.204982][ C1] ? timers_dead_cpu+0x9d0/0x9d0 [ 136.209983][ C1] __do_softirq+0x4a1/0x83a [ 136.214470][ C1] ? ksoftirqd_should_run+0x30/0x30 [ 136.219643][ C1] ? takeover_tasklets+0x900/0x900 [ 136.224747][ C1] run_ksoftirqd+0x25/0x40 [ 136.229144][ C1] smpboot_thread_fn+0x4a3/0x990 [ 136.234076][ C1] kthread+0x4b5/0x4f0 [ 136.238137][ C1] ? cpu_report_death+0x190/0x190 [ 136.243156][ C1] ? kthread_blkcg+0xf0/0xf0 [ 136.247826][ C1] ret_from_fork+0x35/0x40 [ 136.252225][ C1] [ 136.254544][ C1] Uninit was stored to memory at: [ 136.259550][ C1] kmsan_internal_chain_origin+0xcc/0x150 [ 136.265332][ C1] __msan_chain_origin+0x6b/0xe0 [ 136.270246][ C1] ___slab_alloc+0x1dbc/0x1fb0 [ 136.275110][ C1] kmem_cache_alloc_node+0x769/0xe70 [ 136.280492][ C1] __alloc_skb+0x215/0xa10 [ 136.284904][ C1] aoecmd_cfg+0x205/0xa80 [ 136.289214][ C1] discover_timer+0x86/0xa0 [ 136.293698][ C1] call_timer_fn+0x232/0x530 [ 136.298264][ C1] __run_timers+0xcdc/0x11a0 [ 136.302832][ C1] run_timer_softirq+0x2d/0x50 [ 136.307582][ C1] __do_softirq+0x4a1/0x83a [ 136.312148][ C1] run_ksoftirqd+0x25/0x40 [ 136.316546][ C1] smpboot_thread_fn+0x4a3/0x990 [ 136.321457][ C1] kthread+0x4b5/0x4f0 [ 136.325510][ C1] ret_from_fork+0x35/0x40 [ 136.329894][ C1] [ 136.332209][ C1] Uninit was created at: [ 136.336432][ C1] kmsan_internal_poison_shadow+0x58/0xb0 [ 136.342151][ C1] kmsan_slab_free+0x8d/0x100 [ 136.346814][ C1] kmem_cache_free_bulk+0x3ad9/0x3f50 [ 136.352161][ C1] __kfree_skb_flush+0xb0/0x100 [ 136.356987][ C1] net_rx_action+0x1908/0x1950 [ 136.361725][ C1] __do_softirq+0x4a1/0x83a [ 136.366211][ C1] run_ksoftirqd+0x25/0x40 [ 136.370601][ C1] smpboot_thread_fn+0x4a3/0x990 [ 136.375517][ C1] kthread+0x4b5/0x4f0 [ 136.379569][ C1] ret_from_fork+0x35/0x40 [ 136.383966][ C1] ================================================================== [ 136.391998][ C1] Disabling lock debugging due to kernel taint [ 136.398132][ C1] Kernel panic - not syncing: panic_on_warn set ... [ 136.404708][ C1] CPU: 1 PID: 16 Comm: ksoftirqd/1 Tainted: G B 5.3.0-rc7+ #0 [ 136.413465][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 136.423592][ C1] Call Trace: [ 136.426867][ C1] dump_stack+0x191/0x1f0 [ 136.431179][ C1] panic+0x3c9/0xc1e [ 136.435151][ C1] kmsan_report+0x2ca/0x2d0 [ 136.439632][ C1] __msan_warning+0x75/0xe0 [ 136.444117][ C1] kmem_cache_alloc_node+0x5d0/0xe70 [ 136.449381][ C1] ? __alloc_skb+0x215/0xa10 [ 136.453968][ C1] __alloc_skb+0x215/0xa10 [ 136.458372][ C1] aoecmd_cfg+0x205/0xa80 [ 136.462686][ C1] discover_timer+0x86/0xa0 [ 136.467170][ C1] call_timer_fn+0x232/0x530 [ 136.471737][ C1] ? skbfree+0x4a0/0x4a0 [ 136.476055][ C1] __run_timers+0xcdc/0x11a0 [ 136.480632][ C1] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 136.486691][ C1] ? skbfree+0x4a0/0x4a0 [ 136.490920][ C1] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 136.496878][ C1] run_timer_softirq+0x2d/0x50 [ 136.501617][ C1] ? timers_dead_cpu+0x9d0/0x9d0 [ 136.506547][ C1] __do_softirq+0x4a1/0x83a [ 136.511035][ C1] ? ksoftirqd_should_run+0x30/0x30 [ 136.516215][ C1] ? takeover_tasklets+0x900/0x900 [ 136.521312][ C1] run_ksoftirqd+0x25/0x40 [ 136.525719][ C1] smpboot_thread_fn+0x4a3/0x990 [ 136.530647][ C1] kthread+0x4b5/0x4f0 [ 136.534691][ C1] ? cpu_report_death+0x190/0x190 [ 136.539696][ C1] ? kthread_blkcg+0xf0/0xf0 [ 136.544267][ C1] ret_from_fork+0x35/0x40 [ 136.550499][ C1] Kernel Offset: disabled [ 136.554837][ C1] Rebooting in 86400 seconds..