[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 100.698871][ T30] audit: type=1800 audit(1565554771.755:25): pid=11677 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 100.723858][ T30] audit: type=1800 audit(1565554771.785:26): pid=11677 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 100.762201][ T30] audit: type=1800 audit(1565554771.805:27): pid=11677 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 '10.128.0.129' (ECDSA) to the list of known hosts. 2019/08/11 20:19:48 fuzzer started 2019/08/11 20:19:54 dialing manager at 10.128.0.26:37941 2019/08/11 20:19:55 syscalls: 2374 2019/08/11 20:19:55 code coverage: enabled 2019/08/11 20:19:55 comparison tracing: CONFIG_KCOV_ENABLE_COMPARISONS is not enabled 2019/08/11 20:19:55 extra coverage: enabled 2019/08/11 20:19:55 setuid sandbox: enabled 2019/08/11 20:19:55 namespace sandbox: enabled 2019/08/11 20:19:55 Android sandbox: /sys/fs/selinux/policy does not exist 2019/08/11 20:19:55 fault injection: enabled 2019/08/11 20:19:55 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/08/11 20:19:55 net packet injection: enabled 2019/08/11 20:19:55 net device setup: enabled syzkaller login: [ 136.094281][ C0] ================================================================== [ 136.102422][ C0] BUG: KMSAN: uninit-value in kmem_cache_alloc_node+0x5d0/0xe70 [ 136.110065][ C0] CPU: 0 PID: 11834 Comm: syz-fuzzer Not tainted 5.3.0-rc3+ #17 [ 136.117693][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 136.127754][ C0] Call Trace: [ 136.131055][ C0] [ 136.133928][ C0] dump_stack+0x191/0x1f0 [ 136.138293][ C0] kmsan_report+0x162/0x2d0 [ 136.142826][ C0] __msan_warning+0x75/0xe0 [ 136.147359][ C0] kmem_cache_alloc_node+0x5d0/0xe70 [ 136.152663][ C0] ? __alloc_skb+0x215/0xa10 [ 136.157302][ C0] __alloc_skb+0x215/0xa10 [ 136.161752][ C0] aoecmd_cfg+0x205/0xa80 [ 136.166119][ C0] discover_timer+0x86/0xa0 [ 136.170643][ C0] call_timer_fn+0x232/0x530 [ 136.175234][ C0] ? skbfree+0x4a0/0x4a0 [ 136.179467][ C0] __run_timers+0xcdc/0x11a0 [ 136.184040][ C0] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 136.190112][ C0] ? skbfree+0x4a0/0x4a0 [ 136.194356][ C0] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 136.200318][ C0] run_timer_softirq+0x2d/0x50 [ 136.205062][ C0] ? timers_dead_cpu+0x9d0/0x9d0 [ 136.209989][ C0] __do_softirq+0x4a1/0x83a [ 136.214490][ C0] do_softirq_own_stack+0x49/0x80 [ 136.219492][ C0] [ 136.222434][ C0] __local_bh_enable_ip+0x184/0x1d0 [ 136.227624][ C0] local_bh_enable+0x36/0x40 [ 136.232198][ C0] ip_finish_output2+0x20dc/0x25d0 [ 136.237297][ C0] ? __msan_metadata_ptr_for_load_2+0x10/0x20 [ 136.243351][ C0] ? nf_ct_deliver_cached_events+0x4d5/0x6e0 [ 136.249351][ C0] __ip_finish_output+0xaf8/0xda0 [ 136.254401][ C0] ip_finish_output+0x2db/0x420 [ 136.259247][ C0] ip_output+0x541/0x610 [ 136.263495][ C0] ? ip_mc_finish_output+0x6d0/0x6d0 [ 136.268765][ C0] ? ip_finish_output+0x420/0x420 [ 136.273792][ C0] __ip_queue_xmit+0x1caf/0x21f0 [ 136.278722][ C0] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 136.284688][ C0] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 136.290758][ C0] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 136.296837][ C0] ip_queue_xmit+0xcc/0xf0 [ 136.301243][ C0] ? tcp_v4_inbound_md5_hash+0xd10/0xd10 [ 136.306859][ C0] __tcp_transmit_skb+0x409e/0x5c60 [ 136.312081][ C0] __tcp_send_ack+0x701/0x840 [ 136.316862][ C0] tcp_send_ack+0x68/0x90 [ 136.321176][ C0] tcp_cleanup_rbuf+0x764/0x800 [ 136.326024][ C0] tcp_recvmsg+0x334d/0x4ff0 [ 136.330649][ C0] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 136.336615][ C0] ? tcp_mmap+0x150/0x150 [ 136.340924][ C0] ? tcp_mmap+0x150/0x150 [ 136.345238][ C0] inet_recvmsg+0x237/0x7d0 [ 136.349733][ C0] ? inet_sendpage+0x2c0/0x2c0 [ 136.354481][ C0] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 136.360443][ C0] ? inet_sendpage+0x2c0/0x2c0 [ 136.365186][ C0] ? inet_sendpage+0x2c0/0x2c0 [ 136.369946][ C0] sock_read_iter+0x5be/0x660 [ 136.374626][ C0] ? kernel_sock_ip_overhead+0x340/0x340 [ 136.380436][ C0] __vfs_read+0xa67/0xc90 [ 136.384780][ C0] vfs_read+0x359/0x6f0 [ 136.388936][ C0] ksys_read+0x265/0x430 [ 136.393181][ C0] __se_sys_read+0x92/0xb0 [ 136.397587][ C0] __x64_sys_read+0x4a/0x70 [ 136.402079][ C0] do_syscall_64+0xbc/0xf0 [ 136.406484][ C0] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 136.412363][ C0] RIP: 0033:0x47fcb4 [ 136.416238][ C0] Code: ff ff cc cc cc cc e8 2b 41 fb ff 48 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 45 31 d2 45 31 c0 45 31 c9 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 28 ff ff ff ff 48 c7 44 24 30 [ 136.435826][ C0] RSP: 002b:000000c4202d5710 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 136.444220][ C0] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047fcb4 [ 136.452174][ C0] RDX: 0000000000001000 RSI: 000000c4202da000 RDI: 0000000000000003 [ 136.460126][ C0] RBP: 000000c4202d5760 R08: 0000000000000000 R09: 0000000000000000 [ 136.468077][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 136.476070][ C0] R13: 0000000000000004 R14: 0000000000000002 R15: ffffffffffffffff [ 136.484040][ C0] [ 136.486346][ C0] Uninit was stored to memory at: [ 136.491353][ C0] kmsan_internal_chain_origin+0xcc/0x150 [ 136.497052][ C0] __msan_chain_origin+0x6b/0xe0 [ 136.501969][ C0] ___slab_alloc+0x1dbc/0x1fb0 [ 136.506714][ C0] kmem_cache_alloc_node+0x769/0xe70 [ 136.511981][ C0] __alloc_skb+0x215/0xa10 [ 136.516376][ C0] aoecmd_cfg+0x205/0xa80 [ 136.520681][ C0] discover_timer+0x86/0xa0 [ 136.525202][ C0] call_timer_fn+0x232/0x530 [ 136.532572][ C0] __run_timers+0xcdc/0x11a0 [ 136.537235][ C0] run_timer_softirq+0x2d/0x50 [ 136.541981][ C0] __do_softirq+0x4a1/0x83a [ 136.546462][ C0] do_softirq_own_stack+0x49/0x80 [ 136.552602][ C0] __local_bh_enable_ip+0x184/0x1d0 [ 136.557802][ C0] local_bh_enable+0x36/0x40 [ 136.562372][ C0] ip_finish_output2+0x20dc/0x25d0 [ 136.567461][ C0] __ip_finish_output+0xaf8/0xda0 [ 136.572492][ C0] ip_finish_output+0x2db/0x420 [ 136.577322][ C0] ip_output+0x541/0x610 [ 136.581543][ C0] __ip_queue_xmit+0x1caf/0x21f0 [ 136.586460][ C0] ip_queue_xmit+0xcc/0xf0 [ 136.590857][ C0] __tcp_transmit_skb+0x409e/0x5c60 [ 136.596035][ C0] __tcp_send_ack+0x701/0x840 [ 136.600694][ C0] tcp_send_ack+0x68/0x90 [ 136.605090][ C0] tcp_cleanup_rbuf+0x764/0x800 [ 136.609918][ C0] tcp_recvmsg+0x334d/0x4ff0 [ 136.614511][ C0] inet_recvmsg+0x237/0x7d0 [ 136.619010][ C0] sock_read_iter+0x5be/0x660 [ 136.623666][ C0] __vfs_read+0xa67/0xc90 [ 136.627975][ C0] vfs_read+0x359/0x6f0 [ 136.632114][ C0] ksys_read+0x265/0x430 [ 136.636359][ C0] __se_sys_read+0x92/0xb0 [ 136.640779][ C0] __x64_sys_read+0x4a/0x70 [ 136.645330][ C0] do_syscall_64+0xbc/0xf0 [ 136.649730][ C0] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 136.655599][ C0] [ 136.657903][ C0] Uninit was created at: [ 136.662132][ C0] kmsan_internal_poison_shadow+0x53/0xa0 [ 136.667834][ C0] kmsan_slab_free+0x8d/0x100 [ 136.672501][ C0] kmem_cache_free_bulk+0x3ad9/0x3f50 [ 136.677853][ C0] __kfree_skb_flush+0xb0/0x100 [ 136.682685][ C0] net_rx_action+0x1908/0x1950 [ 136.687432][ C0] __do_softirq+0x4a1/0x83a [ 136.691917][ C0] irq_exit+0x230/0x280 [ 136.696056][ C0] do_IRQ+0x20d/0x3a0 [ 136.700017][ C0] ret_from_intr+0x0/0x33 [ 136.704331][ C0] __msan_memset+0xab/0x100 [ 136.708819][ C0] __alloc_skb+0x597/0xa10 [ 136.713216][ C0] __tcp_send_ack+0xfb/0x840 [ 136.717785][ C0] tcp_send_ack+0x68/0x90 [ 136.722096][ C0] tcp_cleanup_rbuf+0x764/0x800 [ 136.726926][ C0] tcp_recvmsg+0x334d/0x4ff0 [ 136.731498][ C0] inet_recvmsg+0x237/0x7d0 [ 136.735994][ C0] sock_read_iter+0x5be/0x660 [ 136.740657][ C0] __vfs_read+0xa67/0xc90 [ 136.744971][ C0] vfs_read+0x359/0x6f0 [ 136.749108][ C0] ksys_read+0x265/0x430 [ 136.753347][ C0] __se_sys_read+0x92/0xb0 [ 136.757744][ C0] __x64_sys_read+0x4a/0x70 [ 136.762230][ C0] do_syscall_64+0xbc/0xf0 [ 136.766641][ C0] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 136.772510][ C0] ================================================================== [ 136.780551][ C0] Disabling lock debugging due to kernel taint [ 136.786689][ C0] Kernel panic - not syncing: panic_on_warn set ... [ 136.793266][ C0] CPU: 0 PID: 11834 Comm: syz-fuzzer Tainted: G B 5.3.0-rc3+ #17 [ 136.802298][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 136.812336][ C0] Call Trace: [ 136.815605][ C0] [ 136.818452][ C0] dump_stack+0x191/0x1f0 [ 136.822775][ C0] panic+0x3c9/0xc1e [ 136.826687][ C0] kmsan_report+0x2ca/0x2d0 [ 136.831184][ C0] __msan_warning+0x75/0xe0 [ 136.835681][ C0] kmem_cache_alloc_node+0x5d0/0xe70 [ 136.840977][ C0] ? __alloc_skb+0x215/0xa10 [ 136.845579][ C0] __alloc_skb+0x215/0xa10 [ 136.850016][ C0] aoecmd_cfg+0x205/0xa80 [ 136.854368][ C0] discover_timer+0x86/0xa0 [ 136.858861][ C0] call_timer_fn+0x232/0x530 [ 136.863455][ C0] ? skbfree+0x4a0/0x4a0 [ 136.867691][ C0] __run_timers+0xcdc/0x11a0 [ 136.872269][ C0] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 136.878414][ C0] ? skbfree+0x4a0/0x4a0 [ 136.882658][ C0] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 136.888625][ C0] run_timer_softirq+0x2d/0x50 [ 136.893368][ C0] ? timers_dead_cpu+0x9d0/0x9d0 [ 136.898300][ C0] __do_softirq+0x4a1/0x83a [ 136.902805][ C0] do_softirq_own_stack+0x49/0x80 [ 136.907820][ C0] [ 136.910744][ C0] __local_bh_enable_ip+0x184/0x1d0 [ 136.915947][ C0] local_bh_enable+0x36/0x40 [ 136.920525][ C0] ip_finish_output2+0x20dc/0x25d0 [ 136.925622][ C0] ? __msan_metadata_ptr_for_load_2+0x10/0x20 [ 136.931671][ C0] ? nf_ct_deliver_cached_events+0x4d5/0x6e0 [ 136.937663][ C0] __ip_finish_output+0xaf8/0xda0 [ 136.942689][ C0] ip_finish_output+0x2db/0x420 [ 136.947536][ C0] ip_output+0x541/0x610 [ 136.951799][ C0] ? ip_mc_finish_output+0x6d0/0x6d0 [ 136.957205][ C0] ? ip_finish_output+0x420/0x420 [ 136.962231][ C0] __ip_queue_xmit+0x1caf/0x21f0 [ 136.967180][ C0] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 136.973176][ C0] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 136.979228][ C0] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 136.985306][ C0] ip_queue_xmit+0xcc/0xf0 [ 136.989724][ C0] ? tcp_v4_inbound_md5_hash+0xd10/0xd10 [ 136.995340][ C0] __tcp_transmit_skb+0x409e/0x5c60 [ 137.000574][ C0] __tcp_send_ack+0x701/0x840 [ 137.005257][ C0] tcp_send_ack+0x68/0x90 [ 137.009575][ C0] tcp_cleanup_rbuf+0x764/0x800 [ 137.014435][ C0] tcp_recvmsg+0x334d/0x4ff0 [ 137.019064][ C0] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 137.025031][ C0] ? tcp_mmap+0x150/0x150 [ 137.029354][ C0] ? tcp_mmap+0x150/0x150 [ 137.033667][ C0] inet_recvmsg+0x237/0x7d0 [ 137.038159][ C0] ? inet_sendpage+0x2c0/0x2c0 [ 137.042911][ C0] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 137.048878][ C0] ? inet_sendpage+0x2c0/0x2c0 [ 137.053638][ C0] ? inet_sendpage+0x2c0/0x2c0 [ 137.058386][ C0] sock_read_iter+0x5be/0x660 [ 137.063069][ C0] ? kernel_sock_ip_overhead+0x340/0x340 [ 137.068685][ C0] __vfs_read+0xa67/0xc90 [ 137.073028][ C0] vfs_read+0x359/0x6f0 [ 137.077180][ C0] ksys_read+0x265/0x430 [ 137.081419][ C0] __se_sys_read+0x92/0xb0 [ 137.085827][ C0] __x64_sys_read+0x4a/0x70 [ 137.090320][ C0] do_syscall_64+0xbc/0xf0 [ 137.094726][ C0] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 137.100596][ C0] RIP: 0033:0x47fcb4 [ 137.104476][ C0] Code: ff ff cc cc cc cc e8 2b 41 fb ff 48 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 45 31 d2 45 31 c0 45 31 c9 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 28 ff ff ff ff 48 c7 44 24 30 [ 137.124066][ C0] RSP: 002b:000000c4202d5710 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 137.132485][ C0] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047fcb4 [ 137.140441][ C0] RDX: 0000000000001000 RSI: 000000c4202da000 RDI: 0000000000000003 [ 137.148399][ C0] RBP: 000000c4202d5760 R08: 0000000000000000 R09: 0000000000000000 [ 137.156366][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 137.164322][ C0] R13: 0000000000000004 R14: 0000000000000002 R15: ffffffffffffffff [ 137.173256][ C0] Kernel Offset: disabled [ 137.177609][ C0] Rebooting in 86400 seconds..