[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 82.410056][ T31] audit: type=1800 audit(1567116521.473:25): pid=11820 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 82.434399][ T31] audit: type=1800 audit(1567116521.503:26): pid=11820 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 82.479116][ T31] audit: type=1800 audit(1567116521.523:27): pid=11820 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 '10.128.1.13' (ECDSA) to the list of known hosts. 2019/08/29 22:08:54 fuzzer started 2019/08/29 22:08:59 dialing manager at 10.128.0.26:40947 2019/08/29 22:09:00 syscalls: 2376 2019/08/29 22:09:00 code coverage: enabled 2019/08/29 22:09:00 comparison tracing: CONFIG_KCOV_ENABLE_COMPARISONS is not enabled 2019/08/29 22:09:00 extra coverage: enabled 2019/08/29 22:09:00 setuid sandbox: enabled 2019/08/29 22:09:00 namespace sandbox: enabled 2019/08/29 22:09:00 Android sandbox: /sys/fs/selinux/policy does not exist 2019/08/29 22:09:00 fault injection: enabled 2019/08/29 22:09:00 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/08/29 22:09:00 net packet injection: enabled 2019/08/29 22:09:00 net device setup: enabled syzkaller login: [ 197.534824][ C0] ================================================================== [ 197.543296][ C0] BUG: KMSAN: uninit-value in kmem_cache_alloc_node+0x5d0/0xe70 [ 197.551529][ C0] CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 5.3.0-rc6+ #18 [ 197.559295][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 197.569523][ C0] Call Trace: [ 197.572905][ C0] dump_stack+0x191/0x1f0 [ 197.577228][ C0] kmsan_report+0x162/0x2d0 [ 197.582071][ C0] __msan_warning+0x75/0xe0 [ 197.586679][ C0] kmem_cache_alloc_node+0x5d0/0xe70 [ 197.592055][ C0] ? __alloc_skb+0x215/0xa10 [ 197.596917][ C0] __alloc_skb+0x215/0xa10 [ 197.602938][ C0] aoecmd_cfg+0x205/0xa80 [ 197.607394][ C0] discover_timer+0x86/0xa0 [ 197.612448][ C0] call_timer_fn+0x232/0x530 [ 197.617426][ C0] ? skbfree+0x4a0/0x4a0 [ 197.621778][ C0] __run_timers+0xcdc/0x11a0 [ 197.626462][ C0] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 197.632621][ C0] ? skbfree+0x4a0/0x4a0 [ 197.636863][ C0] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 197.642834][ C0] run_timer_softirq+0x2d/0x50 [ 197.648120][ C0] ? timers_dead_cpu+0x9d0/0x9d0 [ 197.653059][ C0] __do_softirq+0x4a1/0x83a [ 197.657687][ C0] ? ksoftirqd_should_run+0x30/0x30 [ 197.662917][ C0] ? takeover_tasklets+0x900/0x900 [ 197.668032][ C0] run_ksoftirqd+0x25/0x40 [ 197.672462][ C0] smpboot_thread_fn+0x4a3/0x990 [ 197.677402][ C0] kthread+0x4b5/0x4f0 [ 197.681457][ C0] ? cpu_report_death+0x190/0x190 [ 197.686472][ C0] ? kthread_blkcg+0xf0/0xf0 [ 197.691063][ C0] ret_from_fork+0x35/0x40 [ 197.695556][ C0] [ 197.697950][ C0] Uninit was stored to memory at: [ 197.702987][ C0] kmsan_internal_chain_origin+0xcc/0x150 [ 197.708916][ C0] __msan_chain_origin+0x6b/0xe0 [ 197.714028][ C0] ___slab_alloc+0x1dbc/0x1fb0 [ 197.718803][ C0] kmem_cache_alloc_node+0x769/0xe70 [ 197.724258][ C0] __alloc_skb+0x215/0xa10 [ 197.728665][ C0] aoecmd_cfg+0x205/0xa80 [ 197.733155][ C0] discover_timer+0x86/0xa0 [ 197.737743][ C0] call_timer_fn+0x232/0x530 [ 197.742702][ C0] __run_timers+0xcdc/0x11a0 [ 197.747281][ C0] run_timer_softirq+0x2d/0x50 [ 197.752025][ C0] __do_softirq+0x4a1/0x83a [ 197.756511][ C0] run_ksoftirqd+0x25/0x40 [ 197.761000][ C0] smpboot_thread_fn+0x4a3/0x990 [ 197.766005][ C0] kthread+0x4b5/0x4f0 [ 197.770082][ C0] ret_from_fork+0x35/0x40 [ 197.774485][ C0] [ 197.776802][ C0] Uninit was created at: [ 197.781026][ C0] kmsan_internal_poison_shadow+0x53/0xa0 [ 197.786731][ C0] kmsan_slab_free+0x8d/0x100 [ 197.791406][ C0] kmem_cache_free_bulk+0x3ad9/0x3f50 [ 197.796890][ C0] __kfree_skb_flush+0xb0/0x100 [ 197.801752][ C0] net_rx_action+0x1908/0x1950 [ 197.806679][ C0] __do_softirq+0x4a1/0x83a [ 197.811193][ C0] run_ksoftirqd+0x25/0x40 [ 197.815777][ C0] smpboot_thread_fn+0x4a3/0x990 [ 197.820797][ C0] kthread+0x4b5/0x4f0 [ 197.824885][ C0] ret_from_fork+0x35/0x40 [ 197.829387][ C0] ================================================================== [ 197.837698][ C0] Disabling lock debugging due to kernel taint [ 197.844102][ C0] Kernel panic - not syncing: panic_on_warn set ... [ 197.851507][ C0] CPU: 0 PID: 9 Comm: ksoftirqd/0 Tainted: G B 5.3.0-rc6+ #18 [ 197.860334][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 197.870769][ C0] Call Trace: [ 197.874066][ C0] dump_stack+0x191/0x1f0 [ 197.878491][ C0] panic+0x3c9/0xc1e [ 197.882570][ C0] kmsan_report+0x2ca/0x2d0 [ 197.887154][ C0] __msan_warning+0x75/0xe0 [ 197.892425][ C0] kmem_cache_alloc_node+0x5d0/0xe70 [ 197.897701][ C0] ? __alloc_skb+0x215/0xa10 [ 197.902409][ C0] __alloc_skb+0x215/0xa10 [ 197.906957][ C0] aoecmd_cfg+0x205/0xa80 [ 197.911502][ C0] discover_timer+0x86/0xa0 [ 197.916338][ C0] call_timer_fn+0x232/0x530 [ 197.921478][ C0] ? skbfree+0x4a0/0x4a0 [ 197.925984][ C0] __run_timers+0xcdc/0x11a0 [ 197.930661][ C0] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 197.936929][ C0] ? skbfree+0x4a0/0x4a0 [ 197.941609][ C0] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 197.947748][ C0] run_timer_softirq+0x2d/0x50 [ 197.952842][ C0] ? timers_dead_cpu+0x9d0/0x9d0 [ 197.958062][ C0] __do_softirq+0x4a1/0x83a [ 197.962665][ C0] ? ksoftirqd_should_run+0x30/0x30 [ 197.967955][ C0] ? takeover_tasklets+0x900/0x900 [ 197.973427][ C0] run_ksoftirqd+0x25/0x40 [ 197.978217][ C0] smpboot_thread_fn+0x4a3/0x990 [ 197.983359][ C0] kthread+0x4b5/0x4f0 [ 197.987669][ C0] ? cpu_report_death+0x190/0x190 [ 197.992959][ C0] ? kthread_blkcg+0xf0/0xf0 [ 197.998210][ C0] ret_from_fork+0x35/0x40 [ 198.004829][ C0] Kernel Offset: disabled [ 198.009264][ C0] Rebooting in 86400 seconds..