[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 82.092772][ T32] audit: type=1800 audit(1573581075.148:25): pid=11778 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 82.115533][ T32] audit: type=1800 audit(1573581075.168:26): pid=11778 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 82.139984][ T32] audit: type=1800 audit(1573581075.188:27): pid=11778 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 '10.128.10.45' (ECDSA) to the list of known hosts. 2019/11/12 17:51:28 fuzzer started 2019/11/12 17:51:33 dialing manager at 10.128.0.26:44229 2019/11/12 17:51:33 syscalls: 2397 2019/11/12 17:51:33 code coverage: enabled 2019/11/12 17:51:33 comparison tracing: CONFIG_KCOV_ENABLE_COMPARISONS is not enabled 2019/11/12 17:51:33 extra coverage: enabled 2019/11/12 17:51:33 setuid sandbox: enabled 2019/11/12 17:51:33 namespace sandbox: enabled 2019/11/12 17:51:33 Android sandbox: /sys/fs/selinux/policy does not exist 2019/11/12 17:51:33 fault injection: enabled 2019/11/12 17:51:33 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/11/12 17:51:33 net packet injection: enabled 2019/11/12 17:51:33 net device setup: enabled 2019/11/12 17:51:33 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/11/12 17:51:33 devlink PCI setup: PCI device 0000:00:10.0 is not available syzkaller login: [ 136.093066][ C0] ===================================================== [ 136.100528][ C0] BUG: KMSAN: use-after-free in kmem_cache_alloc_node+0x5a9/0xe60 [ 136.109313][ C0] CPU: 0 PID: 11930 Comm: syz-fuzzer Not tainted 5.4.0-rc5+ #0 [ 136.117003][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 136.127687][ C0] Call Trace: [ 136.131072][ C0] [ 136.134165][ C0] dump_stack+0x191/0x1f0 [ 136.138699][ C0] kmsan_report+0x128/0x220 [ 136.143736][ C0] __msan_warning+0x73/0xe0 [ 136.148644][ C0] kmem_cache_alloc_node+0x5a9/0xe60 [ 136.154399][ C0] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 136.163736][ C0] ? __alloc_skb+0x215/0xa10 [ 136.169200][ C0] __alloc_skb+0x215/0xa10 [ 136.174427][ C0] aoecmd_cfg+0x205/0xa80 [ 136.179376][ C0] discover_timer+0x86/0xa0 [ 136.184893][ C0] call_timer_fn+0x232/0x530 [ 136.190700][ C0] ? skbfree+0x4a0/0x4a0 [ 136.195777][ C0] __run_timers+0xd60/0x1270 [ 136.201043][ C0] ? skbfree+0x4a0/0x4a0 [ 136.205491][ C0] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 136.211390][ C0] run_timer_softirq+0x2d/0x50 [ 136.216333][ C0] ? timers_dead_cpu+0x9d0/0x9d0 [ 136.221279][ C0] __do_softirq+0x4a1/0x83a [ 136.226053][ C0] irq_exit+0x230/0x280 [ 136.230523][ C0] exiting_irq+0xe/0x10 [ 136.234678][ C0] smp_apic_timer_interrupt+0x48/0x70 [ 136.240323][ C0] apic_timer_interrupt+0x2e/0x40 [ 136.245347][ C0] [ 136.248279][ C0] RIP: 0010:metadata_is_contiguous+0x262/0x270 [ 136.254449][ C0] Code: 08 73 ff 48 c7 c7 94 05 2a 90 4c 89 f6 e8 76 8d 4d 0c 8b 3b e8 5f 27 00 00 44 89 e0 48 83 c4 28 5b 41 5c 41 5d 41 5e 41 5f 5d 0f 1f 00 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 57 41 56 [ 136.275225][ C0] RSP: 0018:ffff8880b7f9f288 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 [ 136.283823][ C0] RAX: 00000000058a5e01 RBX: ffffffff902a2000 RCX: ccccccccccccd000 [ 136.291950][ C0] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8881058a5e40 [ 136.300174][ C0] RBP: ffff8880b7f9f2c0 R08: ffff888113f8f0f0 R09: ffff88810a916128 [ 136.308335][ C0] R10: 0000000000000000 R11: ffffffff8c63ab20 R12: ffff8881058a5e40 [ 136.316558][ C0] R13: ffff88811f07f4e8 R14: ffff8881058a5e40 R15: 0000000000000008 [ 136.324671][ C0] ? local_bh_enable+0x40/0x40 [ 136.329452][ C0] ? kmsan_get_shadow_origin_ptr+0x6e/0x4b0 [ 136.335567][ C0] __msan_metadata_ptr_for_load_8+0x10/0x20 [ 136.341456][ C0] ipv4_dst_check+0xdd/0x1b0 [ 136.346049][ C0] ? local_bh_enable+0x40/0x40 [ 136.351287][ C0] __sk_dst_check+0x13b/0x2d0 [ 136.355980][ C0] __ip_queue_xmit+0x1a7/0x21f0 [ 136.360981][ C0] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 136.367310][ C0] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 136.373459][ C0] ip_queue_xmit+0xcc/0xf0 [ 136.377869][ C0] ? tcp_v4_inbound_md5_hash+0xd10/0xd10 [ 136.384100][ C0] __tcp_transmit_skb+0x40e3/0x5d90 [ 136.389460][ C0] __tcp_send_ack+0x701/0x840 [ 136.394351][ C0] tcp_send_ack+0x68/0x90 [ 136.398695][ C0] tcp_cleanup_rbuf+0x764/0x800 [ 136.403549][ C0] tcp_recvmsg+0x334d/0x4ff0 [ 136.408289][ C0] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 136.414258][ C0] ? tcp_mmap+0x150/0x150 [ 136.418689][ C0] ? tcp_mmap+0x150/0x150 [ 136.423017][ C0] inet_recvmsg+0x237/0x7d0 [ 136.427511][ C0] ? inet_sendpage+0x2c0/0x2c0 [ 136.432263][ C0] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 136.438144][ C0] ? inet_sendpage+0x2c0/0x2c0 [ 136.443017][ C0] ? inet_sendpage+0x2c0/0x2c0 [ 136.448264][ C0] sock_read_iter+0x5be/0x660 [ 136.453054][ C0] ? kernel_sock_ip_overhead+0x340/0x340 [ 136.459395][ C0] __vfs_read+0xa67/0xc90 [ 136.463887][ C0] vfs_read+0x359/0x6f0 [ 136.468256][ C0] ksys_read+0x265/0x430 [ 136.473107][ C0] __se_sys_read+0x92/0xb0 [ 136.477728][ C0] __x64_sys_read+0x4a/0x70 [ 136.482315][ C0] do_syscall_64+0xb6/0x160 [ 136.486878][ C0] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 136.494012][ C0] RIP: 0033:0x47fd44 [ 136.498177][ C0] Code: ff ff cc cc cc cc e8 9b 40 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 [ 136.517983][ C0] RSP: 002b:000000c4202b5760 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 136.527088][ C0] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047fd44 [ 136.536213][ C0] RDX: 0000000000001000 RSI: 000000c42034c000 RDI: 0000000000000003 [ 136.544863][ C0] RBP: 000000c4202b57b0 R08: 0000000000000000 R09: 0000000000000000 [ 136.557697][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000010 [ 136.566563][ C0] R13: 0000000000000010 R14: 0000000000000002 R15: ffffffffffffffff [ 136.575486][ C0] [ 136.577943][ C0] Uninit was stored to memory at: [ 136.583345][ C0] kmsan_internal_chain_origin+0xbd/0x180 [ 136.589422][ C0] __msan_chain_origin+0x6b/0xd0 [ 136.594829][ C0] ___slab_alloc+0x1dbc/0x1fb0 [ 136.600157][ C0] kmem_cache_alloc_node+0xaf4/0xe60 [ 136.605732][ C0] __alloc_skb+0x215/0xa10 [ 136.610201][ C0] aoecmd_cfg+0x205/0xa80 [ 136.615414][ C0] discover_timer+0x86/0xa0 [ 136.620092][ C0] call_timer_fn+0x232/0x530 [ 136.625388][ C0] __run_timers+0xd60/0x1270 [ 136.630184][ C0] run_timer_softirq+0x2d/0x50 [ 136.635432][ C0] __do_softirq+0x4a1/0x83a [ 136.639928][ C0] irq_exit+0x230/0x280 [ 136.644082][ C0] exiting_irq+0xe/0x10 [ 136.648615][ C0] smp_apic_timer_interrupt+0x48/0x70 [ 136.655568][ C0] apic_timer_interrupt+0x2e/0x40 [ 136.663150][ C0] metadata_is_contiguous+0x262/0x270 [ 136.670251][ C0] __msan_metadata_ptr_for_load_8+0x10/0x20 [ 136.677638][ C0] ipv4_dst_check+0xdd/0x1b0 [ 136.684382][ C0] __sk_dst_check+0x13b/0x2d0 [ 136.689838][ C0] __ip_queue_xmit+0x1a7/0x21f0 [ 136.694869][ C0] ip_queue_xmit+0xcc/0xf0 [ 136.699833][ C0] __tcp_transmit_skb+0x40e3/0x5d90 [ 136.705932][ C0] __tcp_send_ack+0x701/0x840 [ 136.711206][ C0] tcp_send_ack+0x68/0x90 [ 136.716245][ C0] tcp_cleanup_rbuf+0x764/0x800 [ 136.722151][ C0] tcp_recvmsg+0x334d/0x4ff0 [ 136.727032][ C0] inet_recvmsg+0x237/0x7d0 [ 136.731842][ C0] sock_read_iter+0x5be/0x660 [ 136.737981][ C0] __vfs_read+0xa67/0xc90 [ 136.743549][ C0] vfs_read+0x359/0x6f0 [ 136.749970][ C0] ksys_read+0x265/0x430 [ 136.755435][ C0] __se_sys_read+0x92/0xb0 [ 136.760680][ C0] __x64_sys_read+0x4a/0x70 [ 136.766096][ C0] do_syscall_64+0xb6/0x160 [ 136.771488][ C0] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 136.778782][ C0] [ 136.781484][ C0] Uninit was created at: [ 136.786778][ C0] kmsan_internal_poison_shadow+0x60/0x120 [ 136.793759][ C0] kmsan_slab_free+0x8d/0xf0 [ 136.799778][ C0] kmem_cache_free_bulk+0x3ad9/0x3f10 [ 136.805454][ C0] __kfree_skb_flush+0xb0/0x100 [ 136.810628][ C0] net_rx_action+0x1a5e/0x1aa0 [ 136.816294][ C0] __do_softirq+0x4a1/0x83a [ 136.821631][ C0] irq_exit+0x230/0x280 [ 136.825865][ C0] do_IRQ+0x123/0x360 [ 136.830632][ C0] ret_from_intr+0x0/0x33 [ 136.835850][ C0] default_idle+0x53/0x90 [ 136.840769][ C0] arch_cpu_idle+0x25/0x30 [ 136.845784][ C0] do_idle+0x1d5/0x780 [ 136.850731][ C0] cpu_startup_entry+0x45/0x50 [ 136.856552][ C0] rest_init+0x1be/0x1f0 [ 136.861808][ C0] arch_call_rest_init+0x13/0x15 [ 136.867359][ C0] start_kernel+0x987/0xb57 [ 136.872826][ C0] x86_64_start_reservations+0x18/0x2e [ 136.878795][ C0] x86_64_start_kernel+0x81/0x84 [ 136.884533][ C0] secondary_startup_64+0xa4/0xb0 [ 136.890017][ C0] ===================================================== [ 136.897226][ C0] Disabling lock debugging due to kernel taint [ 136.904719][ C0] Kernel panic - not syncing: panic_on_warn set ... [ 136.913592][ C0] CPU: 0 PID: 11930 Comm: syz-fuzzer Tainted: G B 5.4.0-rc5+ #0 [ 136.925943][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 136.936225][ C0] Call Trace: [ 136.940456][ C0] [ 136.943823][ C0] dump_stack+0x191/0x1f0 [ 136.948843][ C0] panic+0x3c9/0xc1e [ 136.952934][ C0] kmsan_report+0x215/0x220 [ 136.959279][ C0] __msan_warning+0x73/0xe0 [ 136.964325][ C0] kmem_cache_alloc_node+0x5a9/0xe60 [ 136.970039][ C0] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 136.976810][ C0] ? __alloc_skb+0x215/0xa10 [ 136.982743][ C0] __alloc_skb+0x215/0xa10 [ 136.988056][ C0] aoecmd_cfg+0x205/0xa80 [ 136.993270][ C0] discover_timer+0x86/0xa0 [ 136.997883][ C0] call_timer_fn+0x232/0x530 [ 137.003365][ C0] ? skbfree+0x4a0/0x4a0 [ 137.007915][ C0] __run_timers+0xd60/0x1270 [ 137.012816][ C0] ? skbfree+0x4a0/0x4a0 [ 137.017213][ C0] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 137.025528][ C0] run_timer_softirq+0x2d/0x50 [ 137.032330][ C0] ? timers_dead_cpu+0x9d0/0x9d0 [ 137.038454][ C0] __do_softirq+0x4a1/0x83a [ 137.043981][ C0] irq_exit+0x230/0x280 [ 137.048231][ C0] exiting_irq+0xe/0x10 [ 137.053240][ C0] smp_apic_timer_interrupt+0x48/0x70 [ 137.059912][ C0] apic_timer_interrupt+0x2e/0x40 [ 137.068848][ C0] [ 137.072363][ C0] RIP: 0010:metadata_is_contiguous+0x262/0x270 [ 137.078765][ C0] Code: 08 73 ff 48 c7 c7 94 05 2a 90 4c 89 f6 e8 76 8d 4d 0c 8b 3b e8 5f 27 00 00 44 89 e0 48 83 c4 28 5b 41 5c 41 5d 41 5e 41 5f 5d 0f 1f 00 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 57 41 56 [ 137.100100][ C0] RSP: 0018:ffff8880b7f9f288 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 [ 137.108808][ C0] RAX: 00000000058a5e01 RBX: ffffffff902a2000 RCX: ccccccccccccd000 [ 137.116769][ C0] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8881058a5e40 [ 137.124765][ C0] RBP: ffff8880b7f9f2c0 R08: ffff888113f8f0f0 R09: ffff88810a916128 [ 137.132930][ C0] R10: 0000000000000000 R11: ffffffff8c63ab20 R12: ffff8881058a5e40 [ 137.141183][ C0] R13: ffff88811f07f4e8 R14: ffff8881058a5e40 R15: 0000000000000008 [ 137.149642][ C0] ? local_bh_enable+0x40/0x40 [ 137.154733][ C0] ? kmsan_get_shadow_origin_ptr+0x6e/0x4b0 [ 137.160791][ C0] __msan_metadata_ptr_for_load_8+0x10/0x20 [ 137.167322][ C0] ipv4_dst_check+0xdd/0x1b0 [ 137.172896][ C0] ? local_bh_enable+0x40/0x40 [ 137.177940][ C0] __sk_dst_check+0x13b/0x2d0 [ 137.183078][ C0] __ip_queue_xmit+0x1a7/0x21f0 [ 137.188768][ C0] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 137.195607][ C0] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 137.203297][ C0] ip_queue_xmit+0xcc/0xf0 [ 137.207916][ C0] ? tcp_v4_inbound_md5_hash+0xd10/0xd10 [ 137.213836][ C0] __tcp_transmit_skb+0x40e3/0x5d90 [ 137.219618][ C0] __tcp_send_ack+0x701/0x840 [ 137.224779][ C0] tcp_send_ack+0x68/0x90 [ 137.230519][ C0] tcp_cleanup_rbuf+0x764/0x800 [ 137.236224][ C0] tcp_recvmsg+0x334d/0x4ff0 [ 137.242108][ C0] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 137.248300][ C0] ? tcp_mmap+0x150/0x150 [ 137.253463][ C0] ? tcp_mmap+0x150/0x150 [ 137.257782][ C0] inet_recvmsg+0x237/0x7d0 [ 137.262458][ C0] ? inet_sendpage+0x2c0/0x2c0 [ 137.267450][ C0] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 137.275686][ C0] ? inet_sendpage+0x2c0/0x2c0 [ 137.281252][ C0] ? inet_sendpage+0x2c0/0x2c0 [ 137.286281][ C0] sock_read_iter+0x5be/0x660 [ 137.291228][ C0] ? kernel_sock_ip_overhead+0x340/0x340 [ 137.296873][ C0] __vfs_read+0xa67/0xc90 [ 137.302845][ C0] vfs_read+0x359/0x6f0 [ 137.307530][ C0] ksys_read+0x265/0x430 [ 137.313519][ C0] __se_sys_read+0x92/0xb0 [ 137.318406][ C0] __x64_sys_read+0x4a/0x70 [ 137.323621][ C0] do_syscall_64+0xb6/0x160 [ 137.328556][ C0] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 137.335051][ C0] RIP: 0033:0x47fd44 [ 137.339115][ C0] Code: ff ff cc cc cc cc e8 9b 40 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 [ 137.360555][ C0] RSP: 002b:000000c4202b5760 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 137.371632][ C0] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047fd44 [ 137.380500][ C0] RDX: 0000000000001000 RSI: 000000c42034c000 RDI: 0000000000000003 [ 137.388733][ C0] RBP: 000000c4202b57b0 R08: 0000000000000000 R09: 0000000000000000 [ 137.402009][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000010 [ 137.410947][ C0] R13: 0000000000000010 R14: 0000000000000002 R15: ffffffffffffffff [ 137.421331][ C0] Kernel Offset: disabled [ 137.430483][ C0] Rebooting in 86400 seconds..