Warning: Permanently added '10.128.0.113' (ECDSA) to the list of known hosts. 2019/12/12 05:17:59 fuzzer started 2019/12/12 05:18:01 dialing manager at 10.128.0.105:39821 2019/12/12 05:18:01 syscalls: 2689 2019/12/12 05:18:01 code coverage: enabled 2019/12/12 05:18:01 comparison tracing: enabled 2019/12/12 05:18:01 extra coverage: extra coverage is not supported by the kernel 2019/12/12 05:18:01 setuid sandbox: enabled 2019/12/12 05:18:01 namespace sandbox: enabled 2019/12/12 05:18:01 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/12 05:18:01 fault injection: enabled 2019/12/12 05:18:01 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/12 05:18:01 net packet injection: enabled 2019/12/12 05:18:01 net device setup: enabled 2019/12/12 05:18:01 concurrency sanitizer: enabled 2019/12/12 05:18:01 devlink PCI setup: PCI device 0000:00:10.0 is not available 2019/12/12 05:18:01 adding functions to KCSAN blacklist: '__hrtimer_run_queues' 'ext4_free_inode' 'xas_clear_mark' [ 59.415325][ T7602] ================================================================== [ 59.423486][ T7602] BUG: KCSAN: data-race in tcp_add_backlog / tcp_recvmsg [ 59.430497][ T7602] [ 59.432810][ T7602] write to 0xffff88812186a138 of 8 bytes by interrupt on cpu 0: [ 59.440476][ T7602] tcp_add_backlog+0x476/0xce0 [ 59.445225][ T7602] tcp_v4_rcv+0x1a70/0x1bd0 [ 59.449732][ T7602] ip_protocol_deliver_rcu+0x4d/0x420 [ 59.455090][ T7602] ip_local_deliver_finish+0x110/0x140 [ 59.460552][ T7602] ip_local_deliver+0x133/0x210 [ 59.465416][ T7602] ip_rcv_finish+0x121/0x160 [ 59.469984][ T7602] ip_rcv+0x18f/0x1a0 [ 59.473955][ T7602] __netif_receive_skb_one_core+0xa7/0xe0 [ 59.479652][ T7602] __netif_receive_skb+0x37/0xf0 [ 59.484570][ T7602] netif_receive_skb_internal+0x59/0x190 [ 59.490191][ T7602] napi_gro_receive+0x28f/0x330 [ 59.495029][ T7602] receive_buf+0x284/0x30b0 [ 59.499520][ T7602] virtnet_poll+0x436/0x7d0 [ 59.504011][ T7602] net_rx_action+0x3ae/0xa90 [ 59.508592][ T7602] __do_softirq+0x115/0x33f [ 59.513078][ T7602] irq_exit+0xbb/0xe0 [ 59.517049][ T7602] do_IRQ+0x81/0x130 [ 59.520926][ T7602] ret_from_intr+0x0/0x19 [ 59.525234][ T7602] native_safe_halt+0xe/0x10 [ 59.529814][ T7602] arch_cpu_idle+0xa/0x10 [ 59.534247][ T7602] default_idle_call+0x1e/0x40 [ 59.539109][ T7602] do_idle+0x1af/0x280 [ 59.543168][ T7602] cpu_startup_entry+0x1b/0x20 [ 59.547924][ T7602] rest_init+0xec/0xf6 [ 59.551977][ T7602] arch_call_rest_init+0x17/0x37 [ 59.556892][ T7602] start_kernel+0x838/0x85e [ 59.561412][ T7602] x86_64_start_reservations+0x29/0x2b [ 59.566866][ T7602] x86_64_start_kernel+0x72/0x76 [ 59.571838][ T7602] secondary_startup_64+0xa4/0xb0 [ 59.576839][ T7602] [ 59.579202][ T7602] read to 0xffff88812186a138 of 8 bytes by task 7602 on cpu 1: [ 59.587253][ T7602] tcp_recvmsg+0x46e/0x1b40 [ 59.591745][ T7602] inet_recvmsg+0xbb/0x250 [ 59.596148][ T7602] sock_recvmsg+0x92/0xb0 [ 59.600462][ T7602] sock_read_iter+0x15f/0x1e0 [ 59.605119][ T7602] new_sync_read+0x389/0x4f0 [ 59.609706][ T7602] __vfs_read+0xb1/0xc0 [ 59.613887][ T7602] vfs_read+0x143/0x2c0 [ 59.618029][ T7602] ksys_read+0xd5/0x1b0 [ 59.622200][ T7602] __x64_sys_read+0x4c/0x60 [ 59.626706][ T7602] do_syscall_64+0xcc/0x370 [ 59.631198][ T7602] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 59.637104][ T7602] [ 59.639411][ T7602] Reported by Kernel Concurrency Sanitizer on: [ 59.645555][ T7602] CPU: 1 PID: 7602 Comm: syz-fuzzer Not tainted 5.4.0-syzkaller #0 [ 59.653540][ T7602] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.663685][ T7602] ================================================================== [ 59.671731][ T7602] Kernel panic - not syncing: panic_on_warn set ... [ 59.678309][ T7602] CPU: 1 PID: 7602 Comm: syz-fuzzer Not tainted 5.4.0-syzkaller #0 [ 59.686174][ T7602] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.696216][ T7602] Call Trace: [ 59.699498][ T7602] dump_stack+0x11d/0x181 [ 59.703823][ T7602] panic+0x210/0x640 [ 59.707706][ T7602] ? vprintk_func+0x8d/0x140 [ 59.712411][ T7602] kcsan_report.cold+0xc/0xd [ 59.716997][ T7602] kcsan_setup_watchpoint+0x3fe/0x460 [ 59.722357][ T7602] __tsan_read8+0xc6/0x100 [ 59.726757][ T7602] tcp_recvmsg+0x46e/0x1b40 [ 59.731307][ T7602] inet_recvmsg+0xbb/0x250 [ 59.735708][ T7602] ? apparmor_socket_recvmsg+0x3b/0x50 [ 59.741150][ T7602] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 59.747372][ T7602] ? security_socket_recvmsg+0x92/0xb0 [ 59.752816][ T7602] ? inet_sendpage+0x100/0x100 [ 59.757563][ T7602] sock_recvmsg+0x92/0xb0 [ 59.761870][ T7602] sock_read_iter+0x15f/0x1e0 [ 59.766533][ T7602] new_sync_read+0x389/0x4f0 [ 59.771216][ T7602] __vfs_read+0xb1/0xc0 [ 59.775352][ T7602] vfs_read+0x143/0x2c0 [ 59.779487][ T7602] ksys_read+0xd5/0x1b0 [ 59.783629][ T7602] __x64_sys_read+0x4c/0x60 [ 59.788120][ T7602] do_syscall_64+0xcc/0x370 [ 59.792606][ T7602] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 59.798539][ T7602] RIP: 0033:0x47c530 [ 59.802428][ T7602] Code: 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 49 c7 c2 00 00 00 00 49 c7 c0 00 00 00 00 49 c7 c1 00 00 00 00 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 [ 59.822021][ T7602] RSP: 002b:000000c4203d37d0 EFLAGS: 00000202 ORIG_RAX: 0000000000000000 [ 59.830413][ T7602] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530 [ 59.838362][ T7602] RDX: 0000000000001000 RSI: 000000c4201f4000 RDI: 0000000000000003 [ 59.846347][ T7602] RBP: 000000c4203d3828 R08: 0000000000000000 R09: 0000000000000000 [ 59.854302][ T7602] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000010 [ 59.862279][ T7602] R13: ffffffffffffffff R14: 0000000000000002 R15: ffffffffffffffff [ 59.871456][ T7602] Kernel Offset: disabled [ 59.875777][ T7602] Rebooting in 86400 seconds..