Warning: Permanently added '10.128.0.71' (ECDSA) to the list of known hosts. 2020/07/04 00:02:49 fuzzer started 2020/07/04 00:02:49 dialing manager at 10.128.0.105:45001 2020/07/04 00:02:49 checking machine... 2020/07/04 00:02:49 checking revisions... 2020/07/04 00:02:49 testing simple program... 2020/07/04 00:02:49 building call list... syzkaller login: [ 31.556492][ T8646] IPVS: ftp: loaded support on port[0] = 21 [ 31.822627][ T7] tipc: TX() has been purged, node left! [ 33.915542][ T8631] can: request_module (can-proto-0) failed. [ 33.924994][ T8631] can: request_module (can-proto-0) failed. [ 33.934886][ T8631] can: request_module (can-proto-0) failed. 2020/07/04 00:02:56 syscalls: 3108 2020/07/04 00:02:56 code coverage: enabled 2020/07/04 00:02:56 comparison tracing: enabled 2020/07/04 00:02:56 extra coverage: enabled 2020/07/04 00:02:56 setuid sandbox: enabled 2020/07/04 00:02:56 namespace sandbox: enabled 2020/07/04 00:02:56 Android sandbox: /sys/fs/selinux/policy does not exist 2020/07/04 00:02:56 fault injection: enabled 2020/07/04 00:02:56 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/07/04 00:02:56 net packet injection: enabled 2020/07/04 00:02:56 net device setup: enabled 2020/07/04 00:02:56 concurrency sanitizer: enabled 2020/07/04 00:02:56 devlink PCI setup: PCI device 0000:00:10.0 is not available 2020/07/04 00:02:56 USB emulation: enabled [ 37.940290][ T8632] ================================================================== [ 37.948357][ T8632] BUG: KCSAN: data-race in __send_signal / futex_wait_queue_me [ 37.955864][ T8632] [ 37.958163][ T8632] write to 0xffff88812a8580a4 of 4 bytes by task 8629 on cpu 1: [ 37.965760][ T8632] futex_wait_queue_me+0x186/0x250 [ 37.970838][ T8632] futex_wait+0x145/0x390 [ 37.975133][ T8632] do_futex+0x144a/0x21c0 [ 37.979473][ T8632] __se_sys_futex+0x26d/0x330 [ 37.984116][ T8632] __x64_sys_futex+0x74/0x80 [ 37.988672][ T8632] do_syscall_64+0x51/0xb0 [ 37.993059][ T8632] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 37.998912][ T8632] [ 38.001208][ T8632] read to 0xffff88812a8580a4 of 4 bytes by task 8632 on cpu 0: [ 38.008713][ T8632] __send_signal+0x26d/0x7d0 [ 38.013266][ T8632] send_signal+0x398/0x3e0 [ 38.017645][ T8632] do_send_sig_info+0x9b/0xe0 [ 38.022294][ T8632] do_send_specific+0xc7/0x100 [ 38.027024][ T8632] __x64_sys_tgkill+0x108/0x140 [ 38.031854][ T8632] do_syscall_64+0x51/0xb0 [ 38.036237][ T8632] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 38.042088][ T8632] [ 38.044382][ T8632] Reported by Kernel Concurrency Sanitizer on: [ 38.050501][ T8632] CPU: 0 PID: 8632 Comm: syz-fuzzer Not tainted 5.8.0-rc3-syzkaller #0 [ 38.058699][ T8632] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 38.068721][ T8632] ================================================================== [ 38.076746][ T8632] Kernel panic - not syncing: panic_on_warn set ... [ 38.083298][ T8632] CPU: 0 PID: 8632 Comm: syz-fuzzer Not tainted 5.8.0-rc3-syzkaller #0 [ 38.091495][ T8632] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 38.102124][ T8632] Call Trace: [ 38.105381][ T8632] dump_stack+0x10f/0x19d [ 38.109703][ T8632] panic+0x207/0x64a [ 38.113590][ T8632] ? vprintk_emit+0x44a/0x4f0 [ 38.118233][ T8632] kcsan_report+0x684/0x690 [ 38.122716][ T8632] ? kcsan_setup_watchpoint+0x453/0x4d0 [ 38.128231][ T8632] ? __send_signal+0x26d/0x7d0 [ 38.133047][ T8632] ? send_signal+0x398/0x3e0 [ 38.137605][ T8632] ? do_send_sig_info+0x9b/0xe0 [ 38.142440][ T8632] ? do_send_specific+0xc7/0x100 [ 38.147344][ T8632] ? __x64_sys_tgkill+0x108/0x140 [ 38.152448][ T8632] ? do_syscall_64+0x51/0xb0 [ 38.157006][ T8632] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 38.163046][ T8632] kcsan_setup_watchpoint+0x453/0x4d0 [ 38.168392][ T8632] __send_signal+0x26d/0x7d0 [ 38.172947][ T8632] send_signal+0x398/0x3e0 [ 38.177330][ T8632] do_send_sig_info+0x9b/0xe0 [ 38.181976][ T8632] do_send_specific+0xc7/0x100 [ 38.186717][ T8632] __x64_sys_tgkill+0x108/0x140 [ 38.191534][ T8632] do_syscall_64+0x51/0xb0 [ 38.195917][ T8632] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 38.201775][ T8632] RIP: 0033:0x468b26 [ 38.205632][ T8632] Code: Bad RIP value. [ 38.209678][ T8632] RSP: 002b:000000c000049eb0 EFLAGS: 00000246 ORIG_RAX: 00000000000000ea [ 38.218054][ T8632] RAX: ffffffffffffffda RBX: 000000c000000180 RCX: 0000000000468b26 [ 38.225991][ T8632] RDX: 0000000000000017 RSI: 00000000000021b5 RDI: 00000000000021b5 [ 38.233930][ T8632] RBP: 000000c000049ed0 R08: 0000000000000000 R09: 0000000000000000 [ 38.241869][ T8632] R10: 000000c000049ec0 R11: 0000000000000246 R12: 00000000000000ff [ 38.249808][ T8632] R13: 0000000000e66020 R14: 0000000000000000 R15: 0000000000000000 [ 39.385025][ T8632] Shutting down cpus with NMI [ 39.390888][ T8632] Kernel Offset: disabled [ 39.395193][ T8632] Rebooting in 86400 seconds..