[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 100.205698][ T30] audit: type=1800 audit(1565171137.266:25): pid=11612 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 100.229620][ T30] audit: type=1800 audit(1565171137.286:26): pid=11612 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 100.268688][ T30] audit: type=1800 audit(1565171137.316:27): pid=11612 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 '10.128.0.2' (ECDSA) to the list of known hosts. 2019/08/07 09:45:51 fuzzer started 2019/08/07 09:45:57 dialing manager at 10.128.0.26:37019 2019/08/07 09:45:58 syscalls: 2369 2019/08/07 09:45:58 code coverage: enabled 2019/08/07 09:45:58 comparison tracing: CONFIG_KCOV_ENABLE_COMPARISONS is not enabled 2019/08/07 09:45:58 extra coverage: enabled 2019/08/07 09:45:58 setuid sandbox: enabled 2019/08/07 09:45:58 namespace sandbox: enabled 2019/08/07 09:45:58 Android sandbox: /sys/fs/selinux/policy does not exist 2019/08/07 09:45:58 fault injection: enabled 2019/08/07 09:45:58 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/08/07 09:45:58 net packet injection: enabled 2019/08/07 09:45:58 net device setup: enabled syzkaller login: [ 258.976094][ C0] ================================================================== [ 258.984229][ C0] BUG: KMSAN: uninit-value in kmem_cache_alloc_node+0x5d0/0xe70 [ 258.991936][ C0] CPU: 0 PID: 11774 Comm: syz-fuzzer Not tainted 5.3.0-rc3+ #16 [ 258.999566][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 259.009638][ C0] Call Trace: [ 259.012990][ C0] [ 259.015967][ C0] dump_stack+0x191/0x1f0 [ 259.020448][ C0] kmsan_report+0x162/0x2d0 [ 259.025259][ C0] __msan_warning+0x75/0xe0 [ 259.031050][ C0] kmem_cache_alloc_node+0x5d0/0xe70 [ 259.037342][ C0] ? __alloc_skb+0x215/0xa10 [ 259.041987][ C0] __alloc_skb+0x215/0xa10 [ 259.046415][ C0] aoecmd_cfg+0x205/0xa80 [ 259.050751][ C0] discover_timer+0x86/0xa0 [ 259.055243][ C0] call_timer_fn+0x232/0x530 [ 259.059823][ C0] ? skbfree+0x4a0/0x4a0 [ 259.064060][ C0] __run_timers+0xcdc/0x11a0 [ 259.068644][ C0] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 259.074722][ C0] ? skbfree+0x4a0/0x4a0 [ 259.078967][ C0] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 259.084946][ C0] run_timer_softirq+0x2d/0x50 [ 259.089692][ C0] ? timers_dead_cpu+0x9d0/0x9d0 [ 259.094678][ C0] __do_softirq+0x4a1/0x83a [ 259.099201][ C0] do_softirq_own_stack+0x49/0x80 [ 259.104204][ C0] [ 259.107138][ C0] __local_bh_enable_ip+0x184/0x1d0 [ 259.112369][ C0] local_bh_enable+0x36/0x40 [ 259.116952][ C0] ip_finish_output2+0x20dc/0x25d0 [ 259.122051][ C0] ? __msan_metadata_ptr_for_load_2+0x10/0x20 [ 259.128144][ C0] ? nf_ct_deliver_cached_events+0x4d5/0x6e0 [ 259.134141][ C0] __ip_finish_output+0xaf8/0xda0 [ 259.139254][ C0] ip_finish_output+0x2db/0x420 [ 259.144102][ C0] ip_output+0x541/0x610 [ 259.148345][ C0] ? ip_mc_finish_output+0x6d0/0x6d0 [ 259.153617][ C0] ? ip_finish_output+0x420/0x420 [ 259.158628][ C0] __ip_queue_xmit+0x1caf/0x21f0 [ 259.163552][ C0] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 259.169641][ C0] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 259.175704][ C0] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 259.181780][ C0] ip_queue_xmit+0xcc/0xf0 [ 259.186289][ C0] ? tcp_v4_inbound_md5_hash+0xd10/0xd10 [ 259.191910][ C0] __tcp_transmit_skb+0x409e/0x5c60 [ 259.197134][ C0] __tcp_send_ack+0x701/0x840 [ 259.201813][ C0] tcp_send_ack+0x68/0x90 [ 259.206132][ C0] tcp_cleanup_rbuf+0x764/0x800 [ 259.210994][ C0] tcp_recvmsg+0x334d/0x4ff0 [ 259.215621][ C0] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 259.221600][ C0] ? tcp_mmap+0x150/0x150 [ 259.226213][ C0] ? tcp_mmap+0x150/0x150 [ 259.230578][ C0] inet_recvmsg+0x237/0x7d0 [ 259.235082][ C0] ? inet_sendpage+0x2c0/0x2c0 [ 259.239837][ C0] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 259.245816][ C0] ? inet_sendpage+0x2c0/0x2c0 [ 259.250563][ C0] ? inet_sendpage+0x2c0/0x2c0 [ 259.255321][ C0] sock_read_iter+0x5be/0x660 [ 259.260004][ C0] ? kernel_sock_ip_overhead+0x340/0x340 [ 259.265619][ C0] __vfs_read+0xa67/0xc90 [ 259.269964][ C0] vfs_read+0x359/0x6f0 [ 259.274125][ C0] ksys_read+0x265/0x430 [ 259.278368][ C0] __se_sys_read+0x92/0xb0 [ 259.282782][ C0] __x64_sys_read+0x4a/0x70 [ 259.287275][ C0] do_syscall_64+0xbc/0xf0 [ 259.291684][ C0] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 259.297559][ C0] RIP: 0033:0x47fcb4 [ 259.301448][ 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 [ 259.321048][ C0] RSP: 002b:000000c4202ad750 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 259.329444][ C0] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047fcb4 [ 259.337402][ C0] RDX: 0000000000001000 RSI: 000000c42035c000 RDI: 0000000000000003 [ 259.345358][ C0] RBP: 000000c4202ad7a0 R08: 0000000000000000 R09: 0000000000000000 [ 259.353310][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000008 [ 259.361264][ C0] R13: 0000000000000008 R14: 0000000000000020 R15: ffffffffffffffff [ 259.369234][ C0] [ 259.371542][ C0] Uninit was stored to memory at: [ 259.376724][ C0] kmsan_internal_chain_origin+0xcc/0x150 [ 259.382423][ C0] __msan_chain_origin+0x6b/0xe0 [ 259.387341][ C0] ___slab_alloc+0x1dbc/0x1fb0 [ 259.392087][ C0] kmem_cache_alloc_node+0x769/0xe70 [ 259.397353][ C0] __alloc_skb+0x215/0xa10 [ 259.401755][ C0] aoecmd_cfg+0x205/0xa80 [ 259.406069][ C0] discover_timer+0x86/0xa0 [ 259.410552][ C0] call_timer_fn+0x232/0x530 [ 259.415123][ C0] __run_timers+0xcdc/0x11a0 [ 259.419696][ C0] run_timer_softirq+0x2d/0x50 [ 259.424455][ C0] __do_softirq+0x4a1/0x83a [ 259.428941][ C0] do_softirq_own_stack+0x49/0x80 [ 259.433944][ C0] __local_bh_enable_ip+0x184/0x1d0 [ 259.439139][ C0] local_bh_enable+0x36/0x40 [ 259.443739][ C0] ip_finish_output2+0x20dc/0x25d0 [ 259.448838][ C0] __ip_finish_output+0xaf8/0xda0 [ 259.453858][ C0] ip_finish_output+0x2db/0x420 [ 259.458698][ C0] ip_output+0x541/0x610 [ 259.462927][ C0] __ip_queue_xmit+0x1caf/0x21f0 [ 259.467851][ C0] ip_queue_xmit+0xcc/0xf0 [ 259.472250][ C0] __tcp_transmit_skb+0x409e/0x5c60 [ 259.477431][ C0] __tcp_send_ack+0x701/0x840 [ 259.482102][ C0] tcp_send_ack+0x68/0x90 [ 259.486413][ C0] tcp_cleanup_rbuf+0x764/0x800 [ 259.491245][ C0] tcp_recvmsg+0x334d/0x4ff0 [ 259.495818][ C0] inet_recvmsg+0x237/0x7d0 [ 259.500309][ C0] sock_read_iter+0x5be/0x660 [ 259.505010][ C0] __vfs_read+0xa67/0xc90 [ 259.509507][ C0] vfs_read+0x359/0x6f0 [ 259.513642][ C0] ksys_read+0x265/0x430 [ 259.517897][ C0] __se_sys_read+0x92/0xb0 [ 259.522298][ C0] __x64_sys_read+0x4a/0x70 [ 259.526778][ C0] do_syscall_64+0xbc/0xf0 [ 259.531189][ C0] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 259.537062][ C0] [ 259.539369][ C0] Uninit was created at: [ 259.543597][ C0] kmsan_internal_poison_shadow+0x53/0xa0 [ 259.549301][ C0] kmsan_slab_free+0x8d/0x100 [ 259.553985][ C0] kmem_cache_free_bulk+0x3ad9/0x3f50 [ 259.559341][ C0] __kfree_skb_flush+0xb0/0x100 [ 259.564194][ C0] net_rx_action+0x1908/0x1950 [ 259.568954][ C0] __do_softirq+0x4a1/0x83a [ 259.573439][ C0] irq_exit+0x230/0x280 [ 259.577593][ C0] do_IRQ+0x20d/0x3a0 [ 259.581558][ C0] ret_from_intr+0x0/0x33 [ 259.585868][ C0] __msan_poison_alloca+0x155/0x270 [ 259.591113][ C0] nf_ct_get_tuple+0xa4a/0x15f0 [ 259.595953][ C0] nf_conntrack_in+0x711/0x2664 [ 259.600785][ C0] ipv4_conntrack_local+0x1b7/0x300 [ 259.605965][ C0] nf_hook_slow+0x18b/0x3f0 [ 259.610449][ C0] __ip_local_out+0x69b/0x800 [ 259.615104][ C0] __ip_queue_xmit+0x1bdc/0x21f0 [ 259.620035][ C0] ip_queue_xmit+0xcc/0xf0 [ 259.624448][ C0] __tcp_transmit_skb+0x409e/0x5c60 [ 259.629629][ C0] __tcp_send_ack+0x701/0x840 [ 259.634295][ C0] tcp_send_ack+0x68/0x90 [ 259.638606][ C0] tcp_cleanup_rbuf+0x764/0x800 [ 259.643438][ C0] tcp_recvmsg+0x334d/0x4ff0 [ 259.648032][ C0] inet_recvmsg+0x237/0x7d0 [ 259.652513][ C0] sock_read_iter+0x5be/0x660 [ 259.657171][ C0] __vfs_read+0xa67/0xc90 [ 259.661499][ C0] vfs_read+0x359/0x6f0 [ 259.665640][ C0] ksys_read+0x265/0x430 [ 259.669862][ C0] __se_sys_read+0x92/0xb0 [ 259.674286][ C0] __x64_sys_read+0x4a/0x70 [ 259.678773][ C0] do_syscall_64+0xbc/0xf0 [ 259.683177][ C0] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 259.689065][ C0] ================================================================== [ 259.697108][ C0] Disabling lock debugging due to kernel taint [ 259.703356][ C0] Kernel panic - not syncing: panic_on_warn set ... [ 259.709931][ C0] CPU: 0 PID: 11774 Comm: syz-fuzzer Tainted: G B 5.3.0-rc3+ #16 [ 259.718928][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 259.728971][ C0] Call Trace: [ 259.732249][ C0] [ 259.735092][ C0] dump_stack+0x191/0x1f0 [ 259.739418][ C0] panic+0x3c9/0xc1e [ 259.743348][ C0] kmsan_report+0x2ca/0x2d0 [ 259.747863][ C0] __msan_warning+0x75/0xe0 [ 259.752373][ C0] kmem_cache_alloc_node+0x5d0/0xe70 [ 259.757667][ C0] ? __alloc_skb+0x215/0xa10 [ 259.762278][ C0] __alloc_skb+0x215/0xa10 [ 259.766703][ C0] aoecmd_cfg+0x205/0xa80 [ 259.771039][ C0] discover_timer+0x86/0xa0 [ 259.775530][ C0] call_timer_fn+0x232/0x530 [ 259.780111][ C0] ? skbfree+0x4a0/0x4a0 [ 259.784362][ C0] __run_timers+0xcdc/0x11a0 [ 259.788939][ C0] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 259.794992][ C0] ? skbfree+0x4a0/0x4a0 [ 259.799234][ C0] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 259.805205][ C0] run_timer_softirq+0x2d/0x50 [ 259.809957][ C0] ? timers_dead_cpu+0x9d0/0x9d0 [ 259.814877][ C0] __do_softirq+0x4a1/0x83a [ 259.819383][ C0] do_softirq_own_stack+0x49/0x80 [ 259.824405][ C0] [ 259.827332][ C0] __local_bh_enable_ip+0x184/0x1d0 [ 259.832526][ C0] local_bh_enable+0x36/0x40 [ 259.837105][ C0] ip_finish_output2+0x20dc/0x25d0 [ 259.842203][ C0] ? __msan_metadata_ptr_for_load_2+0x10/0x20 [ 259.848255][ C0] ? nf_ct_deliver_cached_events+0x4d5/0x6e0 [ 259.854266][ C0] __ip_finish_output+0xaf8/0xda0 [ 259.859297][ C0] ip_finish_output+0x2db/0x420 [ 259.864321][ C0] ip_output+0x541/0x610 [ 259.868559][ C0] ? ip_mc_finish_output+0x6d0/0x6d0 [ 259.873927][ C0] ? ip_finish_output+0x420/0x420 [ 259.878952][ C0] __ip_queue_xmit+0x1caf/0x21f0 [ 259.883877][ C0] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 259.889871][ C0] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 259.895942][ C0] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 259.902542][ C0] ip_queue_xmit+0xcc/0xf0 [ 259.906951][ C0] ? tcp_v4_inbound_md5_hash+0xd10/0xd10 [ 259.912582][ C0] __tcp_transmit_skb+0x409e/0x5c60 [ 259.917806][ C0] __tcp_send_ack+0x701/0x840 [ 259.922493][ C0] tcp_send_ack+0x68/0x90 [ 259.926809][ C0] tcp_cleanup_rbuf+0x764/0x800 [ 259.931655][ C0] tcp_recvmsg+0x334d/0x4ff0 [ 259.936285][ C0] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 259.942262][ C0] ? tcp_mmap+0x150/0x150 [ 259.946572][ C0] ? tcp_mmap+0x150/0x150 [ 259.950890][ C0] inet_recvmsg+0x237/0x7d0 [ 259.955383][ C0] ? inet_sendpage+0x2c0/0x2c0 [ 259.960134][ C0] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 259.966099][ C0] ? inet_sendpage+0x2c0/0x2c0 [ 259.970846][ C0] ? inet_sendpage+0x2c0/0x2c0 [ 259.975596][ C0] sock_read_iter+0x5be/0x660 [ 259.980274][ C0] ? kernel_sock_ip_overhead+0x340/0x340 [ 259.985906][ C0] __vfs_read+0xa67/0xc90 [ 259.990248][ C0] vfs_read+0x359/0x6f0 [ 259.994408][ C0] ksys_read+0x265/0x430 [ 259.998651][ C0] __se_sys_read+0x92/0xb0 [ 260.003061][ C0] __x64_sys_read+0x4a/0x70 [ 260.007652][ C0] do_syscall_64+0xbc/0xf0 [ 260.012083][ C0] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 260.019646][ C0] RIP: 0033:0x47fcb4 [ 260.023529][ 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 [ 260.043133][ C0] RSP: 002b:000000c4202ad750 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 260.051536][ C0] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047fcb4 [ 260.059493][ C0] RDX: 0000000000001000 RSI: 000000c42035c000 RDI: 0000000000000003 [ 260.067447][ C0] RBP: 000000c4202ad7a0 R08: 0000000000000000 R09: 0000000000000000 [ 260.075421][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000008 [ 260.083392][ C0] R13: 0000000000000008 R14: 0000000000000020 R15: ffffffffffffffff [ 260.092373][ C0] Kernel Offset: disabled [ 260.096706][ C0] Rebooting in 86400 seconds..