[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 100.851340][ T31] audit: type=1800 audit(1565118916.901:25): pid=11475 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 100.876886][ T31] audit: type=1800 audit(1565118916.931:26): pid=11475 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 100.915848][ T31] audit: type=1800 audit(1565118916.961:27): pid=11475 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 '10.128.0.187' (ECDSA) to the list of known hosts. 2019/08/06 19:15:30 fuzzer started 2019/08/06 19:15:36 dialing manager at 10.128.0.26:44947 2019/08/06 19:15:36 syscalls: 2367 2019/08/06 19:15:36 code coverage: enabled 2019/08/06 19:15:36 comparison tracing: CONFIG_KCOV_ENABLE_COMPARISONS is not enabled 2019/08/06 19:15:36 extra coverage: enabled 2019/08/06 19:15:36 setuid sandbox: enabled 2019/08/06 19:15:36 namespace sandbox: enabled 2019/08/06 19:15:36 Android sandbox: /sys/fs/selinux/policy does not exist 2019/08/06 19:15:36 fault injection: enabled 2019/08/06 19:15:36 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/08/06 19:15:36 net packet injection: enabled 2019/08/06 19:15:36 net device setup: enabled syzkaller login: [ 197.524538][ C0] ================================================================== [ 197.532701][ C0] BUG: KMSAN: uninit-value in kmem_cache_alloc_node+0x5d0/0xe70 [ 197.540354][ C0] CPU: 0 PID: 11637 Comm: syz-fuzzer Not tainted 5.3.0-rc3+ #16 [ 197.547991][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 197.558058][ C0] Call Trace: [ 197.561365][ C0] [ 197.564257][ C0] dump_stack+0x191/0x1f0 [ 197.568623][ C0] kmsan_report+0x162/0x2d0 [ 197.573162][ C0] __msan_warning+0x75/0xe0 [ 197.577698][ C0] kmem_cache_alloc_node+0x5d0/0xe70 [ 197.583009][ C0] ? __alloc_skb+0x215/0xa10 [ 197.587647][ C0] __alloc_skb+0x215/0xa10 [ 197.592125][ C0] aoecmd_cfg+0x205/0xa80 [ 197.596515][ C0] discover_timer+0x86/0xa0 [ 197.601044][ C0] call_timer_fn+0x232/0x530 [ 197.605679][ C0] ? skbfree+0x4a0/0x4a0 [ 197.609989][ C0] __run_timers+0xcdc/0x11a0 [ 197.614586][ C0] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 197.620683][ C0] ? skbfree+0x4a0/0x4a0 [ 197.624932][ C0] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 197.630902][ C0] run_timer_softirq+0x2d/0x50 [ 197.635688][ C0] ? timers_dead_cpu+0x9d0/0x9d0 [ 197.640618][ C0] __do_softirq+0x4a1/0x83a [ 197.645134][ C0] irq_exit+0x230/0x280 [ 197.649286][ C0] exiting_irq+0xe/0x10 [ 197.653431][ C0] smp_apic_timer_interrupt+0x48/0x70 [ 197.658801][ C0] apic_timer_interrupt+0x2e/0x40 [ 197.663806][ C0] [ 197.666748][ C0] RIP: 0010:kmsan_get_shadow_origin_ptr+0x336/0x3a0 [ 197.673320][ C0] Code: 00 d0 cc cc cc cc cc cc 4c 0f af e1 4d 09 ec 48 ba 00 00 00 00 80 88 ff ff 49 01 d4 48 01 c3 48 c1 eb 04 48 0f af d9 4c 09 f3 <48> 01 d3 e9 0e fd ff ff 49 63 ce 48 8b 0c cd 50 7e 4e 8f 48 8d 9c [ 197.692930][ C0] RSP: 0018:ffff8880ab81f620 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 [ 197.701322][ C0] RAX: 0000160000000000 RBX: 00000000ad7bf804 RCX: ccccccccccccd000 [ 197.709277][ C0] RDX: ffff888000000000 RSI: ffffea00036de8b0 RDI: ffff8880ab81f804 [ 197.717230][ C0] RBP: ffff8880ab81f650 R08: ffffea000000000f R09: ffff88812fffb000 [ 197.725189][ C0] R10: 0000000000000000 R11: ffffffff8182bd40 R12: ffff8880af94f804 [ 197.733168][ C0] R13: 0000000000000804 R14: 0000000000000804 R15: 0000000000000004 [ 197.741245][ C0] ? stack_trace_save+0x1b0/0x1b0 [ 197.746272][ C0] __msan_metadata_ptr_for_load_4+0x10/0x20 [ 197.752149][ C0] stack_trace_consume_entry+0xc6/0x320 [ 197.757676][ C0] ? stack_trace_save+0x11c/0x1b0 [ 197.762721][ C0] ? stack_trace_save+0x11c/0x1b0 [ 197.767756][ C0] arch_stack_walk+0x30f/0x3e0 [ 197.772530][ C0] ? stack_trace_save+0x1b0/0x1b0 [ 197.777566][ C0] ? stack_trace_save+0x11c/0x1b0 [ 197.782676][ C0] stack_trace_save+0x11c/0x1b0 [ 197.787519][ C0] kmsan_internal_chain_origin+0xcc/0x150 [ 197.793276][ C0] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 197.799258][ C0] kmsan_memcpy_memmove_metadata+0x819/0xa80 [ 197.805232][ C0] kmsan_memcpy_metadata+0xb/0x10 [ 197.810237][ C0] __msan_memcpy+0x56/0x70 [ 197.814645][ C0] sock_read_iter+0x47c/0x660 [ 197.819328][ C0] ? kernel_sock_ip_overhead+0x340/0x340 [ 197.824948][ C0] __vfs_read+0xa67/0xc90 [ 197.829293][ C0] vfs_read+0x359/0x6f0 [ 197.833454][ C0] ksys_read+0x265/0x430 [ 197.837814][ C0] __se_sys_read+0x92/0xb0 [ 197.842229][ C0] __x64_sys_read+0x4a/0x70 [ 197.846748][ C0] do_syscall_64+0xbc/0xf0 [ 197.851247][ C0] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 197.857141][ C0] RIP: 0033:0x47fcb4 [ 197.861131][ 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 [ 197.880812][ C0] RSP: 002b:000000c420391700 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 197.889209][ C0] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047fcb4 [ 197.897164][ C0] RDX: 0000000000001000 RSI: 000000c4202b6000 RDI: 0000000000000003 [ 197.905148][ C0] RBP: 000000c420391750 R08: 0000000000000000 R09: 0000000000000000 [ 197.913133][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000008 [ 197.921092][ C0] R13: 0000000000000008 R14: 0000000000000008 R15: ffffffffffffffff [ 197.929094][ C0] [ 197.931428][ C0] Uninit was stored to memory at: [ 197.936454][ C0] kmsan_internal_chain_origin+0xcc/0x150 [ 197.942176][ C0] __msan_chain_origin+0x6b/0xe0 [ 197.947112][ C0] ___slab_alloc+0x1dbc/0x1fb0 [ 197.951863][ C0] kmem_cache_alloc_node+0x769/0xe70 [ 197.957133][ C0] __alloc_skb+0x215/0xa10 [ 197.961546][ C0] aoecmd_cfg+0x205/0xa80 [ 197.965859][ C0] discover_timer+0x86/0xa0 [ 197.970346][ C0] call_timer_fn+0x232/0x530 [ 197.974917][ C0] __run_timers+0xcdc/0x11a0 [ 197.979492][ C0] run_timer_softirq+0x2d/0x50 [ 197.984252][ C0] __do_softirq+0x4a1/0x83a [ 197.988741][ C0] irq_exit+0x230/0x280 [ 197.992877][ C0] exiting_irq+0xe/0x10 [ 197.997138][ C0] smp_apic_timer_interrupt+0x48/0x70 [ 198.002512][ C0] apic_timer_interrupt+0x2e/0x40 [ 198.007570][ C0] kmsan_get_shadow_origin_ptr+0x336/0x3a0 [ 198.013364][ C0] __msan_metadata_ptr_for_load_4+0x10/0x20 [ 198.019254][ C0] stack_trace_consume_entry+0xc6/0x320 [ 198.024794][ C0] arch_stack_walk+0x30f/0x3e0 [ 198.029541][ C0] stack_trace_save+0x11c/0x1b0 [ 198.034379][ C0] kmsan_internal_chain_origin+0xcc/0x150 [ 198.040080][ C0] kmsan_memcpy_memmove_metadata+0x819/0xa80 [ 198.046047][ C0] kmsan_memcpy_metadata+0xb/0x10 [ 198.051051][ C0] __msan_memcpy+0x56/0x70 [ 198.055451][ C0] sock_read_iter+0x47c/0x660 [ 198.060113][ C0] __vfs_read+0xa67/0xc90 [ 198.064423][ C0] vfs_read+0x359/0x6f0 [ 198.068558][ C0] ksys_read+0x265/0x430 [ 198.072780][ C0] __se_sys_read+0x92/0xb0 [ 198.077174][ C0] __x64_sys_read+0x4a/0x70 [ 198.081654][ C0] do_syscall_64+0xbc/0xf0 [ 198.086051][ C0] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 198.091917][ C0] [ 198.094227][ C0] Uninit was created at: [ 198.098456][ C0] kmsan_internal_poison_shadow+0x53/0xa0 [ 198.104156][ C0] kmsan_slab_free+0x8d/0x100 [ 198.108812][ C0] kmem_cache_free_bulk+0x3ad9/0x3f50 [ 198.114173][ C0] __kfree_skb_flush+0xb0/0x100 [ 198.119013][ C0] net_rx_action+0x1908/0x1950 [ 198.123760][ C0] __do_softirq+0x4a1/0x83a [ 198.128245][ C0] irq_exit+0x230/0x280 [ 198.132411][ C0] do_IRQ+0x20d/0x3a0 [ 198.136378][ C0] ret_from_intr+0x0/0x33 [ 198.140689][ C0] kmsan_slab_free+0xac/0x100 [ 198.145370][ C0] kmem_cache_free+0x2d1/0x2b70 [ 198.150229][ C0] __kfree_skb+0x1dd/0x210 [ 198.154630][ C0] tcp_recvmsg+0x27a6/0x4ff0 [ 198.159224][ C0] inet_recvmsg+0x237/0x7d0 [ 198.163714][ C0] sock_read_iter+0x5be/0x660 [ 198.168375][ C0] __vfs_read+0xa67/0xc90 [ 198.172711][ C0] vfs_read+0x359/0x6f0 [ 198.176848][ C0] ksys_read+0x265/0x430 [ 198.181093][ C0] __se_sys_read+0x92/0xb0 [ 198.185507][ C0] __x64_sys_read+0x4a/0x70 [ 198.190013][ C0] do_syscall_64+0xbc/0xf0 [ 198.194414][ C0] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 198.200284][ C0] ================================================================== [ 198.208323][ C0] Disabling lock debugging due to kernel taint [ 198.214542][ C0] Kernel panic - not syncing: panic_on_warn set ... [ 198.221118][ C0] CPU: 0 PID: 11637 Comm: syz-fuzzer Tainted: G B 5.3.0-rc3+ #16 [ 198.230123][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 198.240160][ C0] Call Trace: [ 198.243446][ C0] [ 198.246295][ C0] dump_stack+0x191/0x1f0 [ 198.250625][ C0] panic+0x3c9/0xc1e [ 198.254555][ C0] kmsan_report+0x2ca/0x2d0 [ 198.259049][ C0] __msan_warning+0x75/0xe0 [ 198.263549][ C0] kmem_cache_alloc_node+0x5d0/0xe70 [ 198.268826][ C0] ? __alloc_skb+0x215/0xa10 [ 198.273423][ C0] __alloc_skb+0x215/0xa10 [ 198.277844][ C0] aoecmd_cfg+0x205/0xa80 [ 198.282192][ C0] discover_timer+0x86/0xa0 [ 198.286690][ C0] call_timer_fn+0x232/0x530 [ 198.291270][ C0] ? skbfree+0x4a0/0x4a0 [ 198.295508][ C0] __run_timers+0xcdc/0x11a0 [ 198.300092][ C0] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 198.306150][ C0] ? skbfree+0x4a0/0x4a0 [ 198.310395][ C0] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 198.316365][ C0] run_timer_softirq+0x2d/0x50 [ 198.321115][ C0] ? timers_dead_cpu+0x9d0/0x9d0 [ 198.326056][ C0] __do_softirq+0x4a1/0x83a [ 198.330577][ C0] irq_exit+0x230/0x280 [ 198.334725][ C0] exiting_irq+0xe/0x10 [ 198.338866][ C0] smp_apic_timer_interrupt+0x48/0x70 [ 198.344225][ C0] apic_timer_interrupt+0x2e/0x40 [ 198.349227][ C0] [ 198.352155][ C0] RIP: 0010:kmsan_get_shadow_origin_ptr+0x336/0x3a0 [ 198.358727][ C0] Code: 00 d0 cc cc cc cc cc cc 4c 0f af e1 4d 09 ec 48 ba 00 00 00 00 80 88 ff ff 49 01 d4 48 01 c3 48 c1 eb 04 48 0f af d9 4c 09 f3 <48> 01 d3 e9 0e fd ff ff 49 63 ce 48 8b 0c cd 50 7e 4e 8f 48 8d 9c [ 198.378409][ C0] RSP: 0018:ffff8880ab81f620 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 [ 198.386807][ C0] RAX: 0000160000000000 RBX: 00000000ad7bf804 RCX: ccccccccccccd000 [ 198.394768][ C0] RDX: ffff888000000000 RSI: ffffea00036de8b0 RDI: ffff8880ab81f804 [ 198.402741][ C0] RBP: ffff8880ab81f650 R08: ffffea000000000f R09: ffff88812fffb000 [ 198.410719][ C0] R10: 0000000000000000 R11: ffffffff8182bd40 R12: ffff8880af94f804 [ 198.418689][ C0] R13: 0000000000000804 R14: 0000000000000804 R15: 0000000000000004 [ 198.426665][ C0] ? stack_trace_save+0x1b0/0x1b0 [ 198.431807][ C0] __msan_metadata_ptr_for_load_4+0x10/0x20 [ 198.437705][ C0] stack_trace_consume_entry+0xc6/0x320 [ 198.443250][ C0] ? stack_trace_save+0x11c/0x1b0 [ 198.448269][ C0] ? stack_trace_save+0x11c/0x1b0 [ 198.453280][ C0] arch_stack_walk+0x30f/0x3e0 [ 198.458034][ C0] ? stack_trace_save+0x1b0/0x1b0 [ 198.463055][ C0] ? stack_trace_save+0x11c/0x1b0 [ 198.468083][ C0] stack_trace_save+0x11c/0x1b0 [ 198.472952][ C0] kmsan_internal_chain_origin+0xcc/0x150 [ 198.478749][ C0] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 198.484752][ C0] kmsan_memcpy_memmove_metadata+0x819/0xa80 [ 198.490736][ C0] kmsan_memcpy_metadata+0xb/0x10 [ 198.495752][ C0] __msan_memcpy+0x56/0x70 [ 198.500159][ C0] sock_read_iter+0x47c/0x660 [ 198.504840][ C0] ? kernel_sock_ip_overhead+0x340/0x340 [ 198.510478][ C0] __vfs_read+0xa67/0xc90 [ 198.514827][ C0] vfs_read+0x359/0x6f0 [ 198.518982][ C0] ksys_read+0x265/0x430 [ 198.523226][ C0] __se_sys_read+0x92/0xb0 [ 198.527637][ C0] __x64_sys_read+0x4a/0x70 [ 198.532132][ C0] do_syscall_64+0xbc/0xf0 [ 198.536551][ C0] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 198.542452][ C0] RIP: 0033:0x47fcb4 [ 198.546332][ 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 [ 198.565927][ C0] RSP: 002b:000000c420391700 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 198.574330][ C0] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047fcb4 [ 198.582311][ C0] RDX: 0000000000001000 RSI: 000000c4202b6000 RDI: 0000000000000003 [ 198.590364][ C0] RBP: 000000c420391750 R08: 0000000000000000 R09: 0000000000000000 [ 198.598324][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000008 [ 198.606282][ C0] R13: 0000000000000008 R14: 0000000000000008 R15: ffffffffffffffff [ 198.615410][ C0] Kernel Offset: disabled [ 198.619741][ C0] Rebooting in 86400 seconds..