Warning: Permanently added '10.128.0.211' (ECDSA) to the list of known hosts. 2020/05/10 02:00:35 fuzzer started 2020/05/10 02:00:35 dialing manager at 10.128.0.105:46779 2020/05/10 02:00:35 checking machine... 2020/05/10 02:00:35 checking revisions... 2020/05/10 02:00:35 testing simple program... syzkaller login: [ 48.119975][ T8921] ================================================================== [ 48.128193][ T8921] BUG: KCSAN: data-race in ep_insert / ep_poll [ 48.134327][ T8921] [ 48.136653][ T8921] write to 0xffff88812412dd18 of 8 bytes by task 8909 on cpu 1: [ 48.144276][ T8921] ep_insert+0xb7d/0xcf0 [ 48.148516][ T8921] do_epoll_ctl+0x72c/0xf90 [ 48.153021][ T8921] __x64_sys_epoll_ctl+0xb4/0x100 [ 48.158037][ T8921] do_syscall_64+0xc7/0x3b0 [ 48.162540][ T8921] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 48.168496][ T8921] [ 48.170822][ T8921] read to 0xffff88812412dd18 of 8 bytes by task 8921 on cpu 0: [ 48.178451][ T8921] ep_poll+0x74b/0x910 [ 48.182534][ T8921] do_epoll_wait+0x15a/0x180 [ 48.187118][ T8921] __x64_sys_epoll_pwait+0xc6/0x170 [ 48.192316][ T8921] do_syscall_64+0xc7/0x3b0 [ 48.196819][ T8921] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 48.197343][ T8925] IPVS: ftp: loaded support on port[0] = 21 [ 48.202728][ T8921] [ 48.210928][ T8921] Reported by Kernel Concurrency Sanitizer on: [ 48.217077][ T8921] CPU: 0 PID: 8921 Comm: syz-fuzzer Not tainted 5.7.0-rc1-syzkaller #0 [ 48.225306][ T8921] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.235352][ T8921] ================================================================== [ 48.243402][ T8921] Kernel panic - not syncing: panic_on_warn set ... [ 48.249985][ T8921] CPU: 0 PID: 8921 Comm: syz-fuzzer Not tainted 5.7.0-rc1-syzkaller #0 [ 48.258233][ T8921] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.268279][ T8921] Call Trace: [ 48.271566][ T8921] dump_stack+0x11d/0x187 [ 48.275894][ T8921] panic+0x210/0x640 [ 48.279786][ T8921] ? vprintk_func+0x89/0x13a [ 48.284377][ T8921] kcsan_report.cold+0xc/0x1a [ 48.289076][ T8921] kcsan_setup_watchpoint+0x3fb/0x440 [ 48.294448][ T8921] ep_poll+0x74b/0x910 [ 48.298541][ T8921] ? wake_up_q+0x90/0x90 [ 48.302789][ T8921] do_epoll_wait+0x15a/0x180 [ 48.307379][ T8921] __x64_sys_epoll_pwait+0xc6/0x170 [ 48.312591][ T8921] do_syscall_64+0xc7/0x3b0 [ 48.317100][ T8921] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 48.323042][ T8921] RIP: 0033:0x45b300 [ 48.326950][ T8921] Code: 0f 05 89 44 24 20 c3 cc cc cc 8b 7c 24 08 48 8b 74 24 10 8b 54 24 18 44 8b 54 24 1c 49 c7 c0 00 00 00 00 b8 19 01 00 00 0f 05 <89> 44 24 20 c3 cc cc cc cc cc cc cc cc cc cc cc 8b 7c 24 08 48 c7 [ 48.346549][ T8921] RSP: 002b:000000c420351858 EFLAGS: 00000246 ORIG_RAX: 0000000000000119 [ 48.355110][ T8921] RAX: ffffffffffffffda RBX: 00000000ffffffff RCX: 000000000045b300 [ 48.363258][ T8921] RDX: 0000000000000080 RSI: 000000c420351898 RDI: 0000000000000004 [ 48.371588][ T8921] RBP: 000000c420351e98 R08: 0000000000000000 R09: 000000c4201c2600 [ 48.379812][ T8921] R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000040 [ 48.388047][ T8921] R13: 0000000000000040 R14: 0000000000000011 R15: 0000000000000000 [ 48.397721][ T8921] Kernel Offset: disabled [ 48.402049][ T8921] Rebooting in 86400 seconds..