[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 105.871608][ T30] audit: type=1800 audit(1565857109.912:25): pid=11619 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 105.904871][ T30] audit: type=1800 audit(1565857109.942:26): pid=11619 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 105.925656][ T30] audit: type=1800 audit(1565857109.952:27): pid=11619 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 '10.128.0.250' (ECDSA) to the list of known hosts. 2019/08/15 08:18:44 fuzzer started 2019/08/15 08:18:51 dialing manager at 10.128.0.26:38375 2019/08/15 08:18:51 syscalls: 2376 2019/08/15 08:18:51 code coverage: enabled 2019/08/15 08:18:51 comparison tracing: CONFIG_KCOV_ENABLE_COMPARISONS is not enabled 2019/08/15 08:18:51 extra coverage: enabled 2019/08/15 08:18:51 setuid sandbox: enabled 2019/08/15 08:18:51 namespace sandbox: enabled 2019/08/15 08:18:51 Android sandbox: /sys/fs/selinux/policy does not exist 2019/08/15 08:18:51 fault injection: enabled 2019/08/15 08:18:51 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/08/15 08:18:51 net packet injection: enabled 2019/08/15 08:18:51 net device setup: enabled syzkaller login: [ 320.423836][ C0] ================================================================== [ 320.432284][ C0] BUG: KMSAN: uninit-value in kmem_cache_alloc_node+0x5d0/0xe70 [ 320.440199][ C0] CPU: 0 PID: 11782 Comm: syz-fuzzer Not tainted 5.3.0-rc3+ #17 [ 320.449937][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 320.460535][ C0] Call Trace: [ 320.463894][ C0] [ 320.466810][ C0] dump_stack+0x191/0x1f0 [ 320.471149][ C0] kmsan_report+0x162/0x2d0 [ 320.475656][ C0] __msan_warning+0x75/0xe0 [ 320.480165][ C0] kmem_cache_alloc_node+0x5d0/0xe70 [ 320.485522][ C0] ? __alloc_skb+0x215/0xa10 [ 320.490135][ C0] __alloc_skb+0x215/0xa10 [ 320.494654][ C0] aoecmd_cfg+0x205/0xa80 [ 320.499011][ C0] discover_timer+0x86/0xa0 [ 320.503599][ C0] call_timer_fn+0x232/0x530 [ 320.508289][ C0] ? skbfree+0x4a0/0x4a0 [ 320.512558][ C0] __run_timers+0xcdc/0x11a0 [ 320.517182][ C0] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 320.523264][ C0] ? skbfree+0x4a0/0x4a0 [ 320.527723][ C0] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 320.533710][ C0] run_timer_softirq+0x2d/0x50 [ 320.538650][ C0] ? timers_dead_cpu+0x9d0/0x9d0 [ 320.543653][ C0] __do_softirq+0x4a1/0x83a [ 320.548206][ C0] irq_exit+0x230/0x280 [ 320.552395][ C0] exiting_irq+0xe/0x10 [ 320.556553][ C0] smp_apic_timer_interrupt+0x48/0x70 [ 320.561961][ C0] apic_timer_interrupt+0x2e/0x40 [ 320.567001][ C0] [ 320.569954][ C0] RIP: 0010:kmsan_get_shadow_origin_ptr+0x60/0x3a0 [ 320.576448][ C0] Code: 3d 64 b3 26 0e 00 74 0b 65 8b 05 5f d7 fe 7d 85 c0 74 18 49 89 dc 4c 89 e0 48 89 da 48 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d 4c 89 f7 4c 89 fe 31 d2 e8 12 d6 ff ff 84 c0 0f 84 17 03 00 00 [ 320.598971][ C0] RSP: 0018:ffff8880ba30f6b0 EFLAGS: 00000292 ORIG_RAX: ffffffffffffff13 [ 320.607505][ C0] RAX: ffff8880b643f738 RBX: 0000000000000001 RCX: ccccccccccccd000 [ 320.616170][ C0] RDX: ffff8880b323f738 RSI: ffffea00038f53b0 RDI: ffff8880ba30f738 [ 320.624139][ C0] RBP: ffff8880ba30f6b8 R08: ffffea000000000f R09: ffff88812fffb000 [ 320.632126][ C0] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 320.640238][ C0] R13: ffff88811376c620 R14: ffff8880ba30f738 R15: 0000000000000000 [ 320.648343][ C0] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 320.654481][ C0] unwind_get_return_address+0x36/0x130 [ 320.660072][ C0] ? __se_sys_read+0x92/0xb0 [ 320.664678][ C0] arch_stack_walk+0x29a/0x3e0 [ 320.669502][ C0] ? stack_trace_save+0x1b0/0x1b0 [ 320.674537][ C0] ? __x64_sys_read+0x4a/0x70 [ 320.679208][ C0] stack_trace_save+0x11c/0x1b0 [ 320.684080][ C0] kmsan_internal_chain_origin+0xcc/0x150 [ 320.690001][ C0] ? kmsan_internal_chain_origin+0xcc/0x150 [ 320.695906][ C0] ? kmsan_memcpy_memmove_metadata+0x819/0xa80 [ 320.702055][ C0] ? kmsan_memcpy_metadata+0xb/0x10 [ 320.707274][ C0] ? __msan_memcpy+0x56/0x70 [ 320.711865][ C0] ? sock_read_iter+0x47c/0x660 [ 320.716752][ C0] ? __vfs_read+0xa67/0xc90 [ 320.721269][ C0] ? vfs_read+0x359/0x6f0 [ 320.725596][ C0] ? ksys_read+0x265/0x430 [ 320.730022][ C0] ? __se_sys_read+0x92/0xb0 [ 320.734665][ C0] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 320.740916][ C0] kmsan_memcpy_memmove_metadata+0x819/0xa80 [ 320.747369][ C0] kmsan_memcpy_metadata+0xb/0x10 [ 320.754729][ C0] __msan_memcpy+0x56/0x70 [ 320.761103][ C0] sock_read_iter+0x47c/0x660 [ 320.766165][ C0] ? kernel_sock_ip_overhead+0x340/0x340 [ 320.773382][ C0] __vfs_read+0xa67/0xc90 [ 320.777769][ C0] vfs_read+0x359/0x6f0 [ 320.782141][ C0] ksys_read+0x265/0x430 [ 320.786802][ C0] __se_sys_read+0x92/0xb0 [ 320.791981][ C0] __x64_sys_read+0x4a/0x70 [ 320.796924][ C0] do_syscall_64+0xbc/0xf0 [ 320.801366][ C0] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 320.807391][ C0] RIP: 0033:0x47fcb4 [ 320.811749][ 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 [ 320.835394][ C0] RSP: 002b:000000c420393760 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 320.843889][ C0] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047fcb4 [ 320.852634][ C0] RDX: 0000000000001000 RSI: 000000c4202f0000 RDI: 0000000000000003 [ 320.860599][ C0] RBP: 000000c4203937b0 R08: 0000000000000000 R09: 0000000000000000 [ 320.868564][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000008 [ 320.876611][ C0] R13: 0000000000000008 R14: 0000000000000002 R15: ffffffffffffffff [ 320.884591][ C0] [ 320.886989][ C0] Uninit was stored to memory at: [ 320.892062][ C0] kmsan_internal_chain_origin+0xcc/0x150 [ 320.897896][ C0] __msan_chain_origin+0x6b/0xe0 [ 320.902828][ C0] ___slab_alloc+0x1dbc/0x1fb0 [ 320.907575][ C0] kmem_cache_alloc_node+0x769/0xe70 [ 320.912850][ C0] __alloc_skb+0x215/0xa10 [ 320.917260][ C0] aoecmd_cfg+0x205/0xa80 [ 320.921771][ C0] discover_timer+0x86/0xa0 [ 320.926267][ C0] call_timer_fn+0x232/0x530 [ 320.930845][ C0] __run_timers+0xcdc/0x11a0 [ 320.935420][ C0] run_timer_softirq+0x2d/0x50 [ 320.940194][ C0] __do_softirq+0x4a1/0x83a [ 320.944707][ C0] irq_exit+0x230/0x280 [ 320.948851][ C0] exiting_irq+0xe/0x10 [ 320.953001][ C0] smp_apic_timer_interrupt+0x48/0x70 [ 320.958377][ C0] apic_timer_interrupt+0x2e/0x40 [ 320.963394][ C0] kmsan_get_shadow_origin_ptr+0x60/0x3a0 [ 320.969101][ C0] unwind_get_return_address+0x36/0x130 [ 320.974650][ C0] arch_stack_walk+0x29a/0x3e0 [ 320.985113][ C0] stack_trace_save+0x11c/0x1b0 [ 320.989986][ C0] kmsan_internal_chain_origin+0xcc/0x150 [ 320.995699][ C0] kmsan_memcpy_memmove_metadata+0x819/0xa80 [ 321.008381][ C0] kmsan_memcpy_metadata+0xb/0x10 [ 321.013420][ C0] __msan_memcpy+0x56/0x70 [ 321.018004][ C0] sock_read_iter+0x47c/0x660 [ 321.022893][ C0] __vfs_read+0xa67/0xc90 [ 321.027258][ C0] vfs_read+0x359/0x6f0 [ 321.031416][ C0] ksys_read+0x265/0x430 [ 321.035642][ C0] __se_sys_read+0x92/0xb0 [ 321.040047][ C0] __x64_sys_read+0x4a/0x70 [ 321.044539][ C0] do_syscall_64+0xbc/0xf0 [ 321.048949][ C0] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 321.055257][ C0] [ 321.057570][ C0] Uninit was created at: [ 321.061803][ C0] kmsan_internal_poison_shadow+0x53/0xa0 [ 321.067711][ C0] kmsan_slab_free+0x8d/0x100 [ 321.073744][ C0] kmem_cache_free_bulk+0x3ad9/0x3f50 [ 321.080136][ C0] __kfree_skb_flush+0xb0/0x100 [ 321.086711][ C0] net_rx_action+0x1908/0x1950 [ 321.091472][ C0] __do_softirq+0x4a1/0x83a [ 321.096037][ C0] irq_exit+0x230/0x280 [ 321.100282][ C0] do_IRQ+0x20d/0x3a0 [ 321.104259][ C0] ret_from_intr+0x0/0x33 [ 321.108589][ C0] default_idle+0x53/0x90 [ 321.112949][ C0] arch_cpu_idle+0x25/0x30 [ 321.117403][ C0] do_idle+0x1d7/0x790 [ 321.121463][ C0] cpu_startup_entry+0x45/0x50 [ 321.126217][ C0] rest_init+0x1be/0x1f0 [ 321.130497][ C0] arch_call_rest_init+0x13/0x15 [ 321.135447][ C0] start_kernel+0x991/0xb61 [ 321.147044][ C0] x86_64_start_reservations+0x18/0x2e [ 321.152506][ C0] x86_64_start_kernel+0x81/0x84 [ 321.157514][ C0] secondary_startup_64+0xa4/0xb0 [ 321.162553][ C0] ================================================================== [ 321.170604][ C0] Disabling lock debugging due to kernel taint [ 321.177755][ C0] Kernel panic - not syncing: panic_on_warn set ... [ 321.185603][ C0] CPU: 0 PID: 11782 Comm: syz-fuzzer Tainted: G B 5.3.0-rc3+ #17 [ 321.195046][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 321.205182][ C0] Call Trace: [ 321.208810][ C0] [ 321.211863][ C0] dump_stack+0x191/0x1f0 [ 321.216248][ C0] panic+0x3c9/0xc1e [ 321.220379][ C0] kmsan_report+0x2ca/0x2d0 [ 321.224941][ C0] __msan_warning+0x75/0xe0 [ 321.230063][ C0] kmem_cache_alloc_node+0x5d0/0xe70 [ 321.235399][ C0] ? __alloc_skb+0x215/0xa10 [ 321.240209][ C0] __alloc_skb+0x215/0xa10 [ 321.244765][ C0] aoecmd_cfg+0x205/0xa80 [ 321.249146][ C0] discover_timer+0x86/0xa0 [ 321.253836][ C0] call_timer_fn+0x232/0x530 [ 321.258441][ C0] ? skbfree+0x4a0/0x4a0 [ 321.262718][ C0] __run_timers+0xcdc/0x11a0 [ 321.267608][ C0] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 321.273700][ C0] ? skbfree+0x4a0/0x4a0 [ 321.277982][ C0] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 321.283991][ C0] run_timer_softirq+0x2d/0x50 [ 321.288791][ C0] ? timers_dead_cpu+0x9d0/0x9d0 [ 321.293743][ C0] __do_softirq+0x4a1/0x83a [ 321.298264][ C0] irq_exit+0x230/0x280 [ 321.302428][ C0] exiting_irq+0xe/0x10 [ 321.306593][ C0] smp_apic_timer_interrupt+0x48/0x70 [ 321.311970][ C0] apic_timer_interrupt+0x2e/0x40 [ 321.317095][ C0] [ 321.320040][ C0] RIP: 0010:kmsan_get_shadow_origin_ptr+0x60/0x3a0 [ 321.326645][ C0] Code: 3d 64 b3 26 0e 00 74 0b 65 8b 05 5f d7 fe 7d 85 c0 74 18 49 89 dc 4c 89 e0 48 89 da 48 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d 4c 89 f7 4c 89 fe 31 d2 e8 12 d6 ff ff 84 c0 0f 84 17 03 00 00 [ 321.346264][ C0] RSP: 0018:ffff8880ba30f6b0 EFLAGS: 00000292 ORIG_RAX: ffffffffffffff13 [ 321.354691][ C0] RAX: ffff8880b643f738 RBX: 0000000000000001 RCX: ccccccccccccd000 [ 321.362665][ C0] RDX: ffff8880b323f738 RSI: ffffea00038f53b0 RDI: ffff8880ba30f738 [ 321.370652][ C0] RBP: ffff8880ba30f6b8 R08: ffffea000000000f R09: ffff88812fffb000 [ 321.378724][ C0] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 321.386694][ C0] R13: ffff88811376c620 R14: ffff8880ba30f738 R15: 0000000000000000 [ 321.397695][ C0] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 321.404468][ C0] unwind_get_return_address+0x36/0x130 [ 321.411459][ C0] ? __se_sys_read+0x92/0xb0 [ 321.417632][ C0] arch_stack_walk+0x29a/0x3e0 [ 321.422514][ C0] ? stack_trace_save+0x1b0/0x1b0 [ 321.427696][ C0] ? __x64_sys_read+0x4a/0x70 [ 321.432403][ C0] stack_trace_save+0x11c/0x1b0 [ 321.438236][ C0] kmsan_internal_chain_origin+0xcc/0x150 [ 321.444188][ C0] ? kmsan_internal_chain_origin+0xcc/0x150 [ 321.453435][ C0] ? kmsan_memcpy_memmove_metadata+0x819/0xa80 [ 321.460737][ C0] ? kmsan_memcpy_metadata+0xb/0x10 [ 321.466746][ C0] ? __msan_memcpy+0x56/0x70 [ 321.481671][ C0] ? sock_read_iter+0x47c/0x660 [ 321.491066][ C0] ? __vfs_read+0xa67/0xc90 [ 321.495935][ C0] ? vfs_read+0x359/0x6f0 [ 321.500355][ C0] ? ksys_read+0x265/0x430 [ 321.504806][ C0] ? __se_sys_read+0x92/0xb0 [ 321.509545][ C0] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 321.515649][ C0] kmsan_memcpy_memmove_metadata+0x819/0xa80 [ 321.521644][ C0] kmsan_memcpy_metadata+0xb/0x10 [ 321.526689][ C0] __msan_memcpy+0x56/0x70 [ 321.531116][ C0] sock_read_iter+0x47c/0x660 [ 321.535829][ C0] ? kernel_sock_ip_overhead+0x340/0x340 [ 321.541467][ C0] __vfs_read+0xa67/0xc90 [ 321.545834][ C0] vfs_read+0x359/0x6f0 [ 321.550010][ C0] ksys_read+0x265/0x430 [ 321.554510][ C0] __se_sys_read+0x92/0xb0 [ 321.568387][ C0] __x64_sys_read+0x4a/0x70 [ 321.577110][ C0] do_syscall_64+0xbc/0xf0 [ 321.584083][ C0] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 321.592017][ C0] RIP: 0033:0x47fcb4 [ 321.600880][ 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 [ 321.625870][ C0] RSP: 002b:000000c420393760 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 321.634281][ C0] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047fcb4 [ 321.643231][ C0] RDX: 0000000000001000 RSI: 000000c4202f0000 RDI: 0000000000000003 [ 321.651642][ C0] RBP: 000000c4203937b0 R08: 0000000000000000 R09: 0000000000000000 [ 321.659811][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000008 [ 321.668564][ C0] R13: 0000000000000008 R14: 0000000000000002 R15: ffffffffffffffff [ 321.679112][ C0] Kernel Offset: disabled [ 321.683468][ C0] Rebooting in 86400 seconds..