Warning: Permanently added '10.128.0.94' (ECDSA) to the list of known hosts. 2020/06/24 11:50:34 fuzzer started 2020/06/24 11:50:34 dialing manager at 10.128.0.105:45045 2020/06/24 11:50:35 syscalls: 3103 2020/06/24 11:50:35 code coverage: enabled 2020/06/24 11:50:35 comparison tracing: enabled 2020/06/24 11:50:35 extra coverage: enabled 2020/06/24 11:50:35 setuid sandbox: enabled 2020/06/24 11:50:35 namespace sandbox: enabled 2020/06/24 11:50:35 Android sandbox: /sys/fs/selinux/policy does not exist 2020/06/24 11:50:35 fault injection: enabled 2020/06/24 11:50:35 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/06/24 11:50:35 net packet injection: enabled 2020/06/24 11:50:35 net device setup: enabled 2020/06/24 11:50:35 concurrency sanitizer: enabled 2020/06/24 11:50:35 devlink PCI setup: PCI device 0000:00:10.0 is not available 2020/06/24 11:50:35 USB emulation: enabled 2020/06/24 11:50:35 suppressing KCSAN reports in functions: 'do_epoll_wait' 'blk_mq_rq_ctx_init' 'complete_signal' 'generic_file_buffered_read' 'generic_write_end' '__xa_clear_mark' 'copy_process' 'ext4_free_inode' 'expire_timers' 'padata_reorder' 'find_get_pages_range_tag' [ 45.121609][ T8657] ================================================================== [ 45.129700][ T8657] BUG: KCSAN: data-race in __mod_timer / timer_clear_idle [ 45.137056][ T8657] [ 45.139377][ T8657] write to 0xffff88812c01cb24 of 1 bytes by task 0 on cpu 0: [ 45.146743][ T8657] timer_clear_idle+0x2e/0x40 [ 45.151390][ T8657] tick_nohz_idle_retain_tick+0x3e/0x40 [ 45.156925][ T8657] do_idle+0x290/0x320 [ 45.160963][ T8657] cpu_startup_entry+0x15/0x20 [ 45.165801][ T8657] rest_init+0xd8/0xe0 [ 45.169843][ T8657] arch_call_rest_init+0xa/0xb [ 45.174586][ T8657] start_kernel+0x608/0x6d0 [ 45.179076][ T8657] secondary_startup_64+0xa4/0xb0 [ 45.184068][ T8657] [ 45.186482][ T8657] read to 0xffff88812c01cb24 of 1 bytes by task 8657 on cpu 1: [ 45.194429][ T8657] __mod_timer+0xb87/0xf00 [ 45.198830][ T8657] mod_timer+0x1b/0x20 [ 45.202868][ T8657] sk_reset_timer+0x1f/0xa0 [ 45.207355][ T8657] tcp_rearm_rto+0x204/0x210 [ 45.211912][ T8657] tcp_write_xmit+0x1bee/0x3f30 [ 45.216732][ T8657] __tcp_push_pending_frames+0x68/0x1c0 [ 45.222259][ T8657] tcp_push+0x2c4/0x2e0 [ 45.226394][ T8657] tcp_sendmsg_locked+0x1b90/0x2180 [ 45.231591][ T8657] tcp_sendmsg+0x2c/0x40 [ 45.235837][ T8657] inet_sendmsg+0x5f/0x80 [ 45.240745][ T8657] sock_write_iter+0x1a1/0x200 [ 45.245487][ T8657] __vfs_write+0x2d8/0x340 [ 45.249904][ T8657] vfs_write+0x19b/0x350 [ 45.254119][ T8657] ksys_write+0xce/0x180 [ 45.258333][ T8657] __x64_sys_write+0x3e/0x50 [ 45.262894][ T8657] do_syscall_64+0x71/0x120 [ 45.267381][ T8657] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 45.273237][ T8657] [ 45.275608][ T8657] Reported by Kernel Concurrency Sanitizer on: [ 45.281742][ T8657] CPU: 1 PID: 8657 Comm: syz-fuzzer Not tainted 5.8.0-rc2-syzkaller #0 [ 45.290032][ T8657] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 45.300069][ T8657] ================================================================== [ 45.308096][ T8657] Kernel panic - not syncing: panic_on_warn set ... [ 45.314654][ T8657] CPU: 1 PID: 8657 Comm: syz-fuzzer Not tainted 5.8.0-rc2-syzkaller #0 [ 45.322854][ T8657] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 45.332876][ T8657] Call Trace: [ 45.336141][ T8657] dump_stack+0x10f/0x19d [ 45.340440][ T8657] panic+0x1f8/0x63a [ 45.344305][ T8657] ? vprintk_emit+0x44a/0x4f0 [ 45.348955][ T8657] kcsan_report+0x684/0x690 [ 45.353429][ T8657] ? kcsan_setup_watchpoint+0x453/0x4d0 [ 45.358942][ T8657] ? __mod_timer+0xb87/0xf00 [ 45.363498][ T8657] ? mod_timer+0x1b/0x20 [ 45.367716][ T8657] ? sk_reset_timer+0x1f/0xa0 [ 45.372361][ T8657] ? tcp_rearm_rto+0x204/0x210 [ 45.377096][ T8657] ? tcp_write_xmit+0x1bee/0x3f30 [ 45.382105][ T8657] ? __tcp_push_pending_frames+0x68/0x1c0 [ 45.387854][ T8657] ? tcp_push+0x2c4/0x2e0 [ 45.392264][ T8657] ? tcp_sendmsg_locked+0x1b90/0x2180 [ 45.397609][ T8657] ? tcp_sendmsg+0x2c/0x40 [ 45.402028][ T8657] ? inet_sendmsg+0x5f/0x80 [ 45.406532][ T8657] ? sock_write_iter+0x1a1/0x200 [ 45.411439][ T8657] ? __vfs_write+0x2d8/0x340 [ 45.415996][ T8657] ? vfs_write+0x19b/0x350 [ 45.420380][ T8657] ? ksys_write+0xce/0x180 [ 45.424763][ T8657] ? __x64_sys_write+0x3e/0x50 [ 45.429513][ T8657] ? do_syscall_64+0x71/0x120 [ 45.434160][ T8657] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 45.440214][ T8657] ? __ip_queue_xmit+0x99e/0x9c0 [ 45.445127][ T8657] ? check_preemption_disabled+0x3f/0x1a0 [ 45.450817][ T8657] kcsan_setup_watchpoint+0x453/0x4d0 [ 45.456175][ T8657] __mod_timer+0xb87/0xf00 [ 45.460571][ T8657] mod_timer+0x1b/0x20 [ 45.464616][ T8657] sk_reset_timer+0x1f/0xa0 [ 45.469104][ T8657] tcp_rearm_rto+0x204/0x210 [ 45.473668][ T8657] tcp_write_xmit+0x1bee/0x3f30 [ 45.478518][ T8657] ? check_preemption_disabled+0x8f/0x1a0 [ 45.484269][ T8657] ? iov_iter_advance+0x1e0/0x890 [ 45.489272][ T8657] ? _copy_from_iter_full+0x1d9/0x6d0 [ 45.494616][ T8657] ? __virt_addr_valid+0x15a/0x1a0 [ 45.499815][ T8657] __tcp_push_pending_frames+0x68/0x1c0 [ 45.505362][ T8657] tcp_push+0x2c4/0x2e0 [ 45.509505][ T8657] tcp_sendmsg_locked+0x1b90/0x2180 [ 45.514681][ T8657] tcp_sendmsg+0x2c/0x40 [ 45.518896][ T8657] inet_sendmsg+0x5f/0x80 [ 45.523202][ T8657] sock_write_iter+0x1a1/0x200 [ 45.527962][ T8657] __vfs_write+0x2d8/0x340 [ 45.532366][ T8657] vfs_write+0x19b/0x350 [ 45.536598][ T8657] ksys_write+0xce/0x180 [ 45.540824][ T8657] __x64_sys_write+0x3e/0x50 [ 45.545418][ T8657] do_syscall_64+0x71/0x120 [ 45.549900][ T8657] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 45.555766][ T8657] RIP: 0033:0x4b3cdb [ 45.559644][ T8657] Code: Bad RIP value. [ 45.563681][ T8657] RSP: 002b:000000c00074f540 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 [ 45.572061][ T8657] RAX: ffffffffffffffda RBX: 000000c00002c000 RCX: 00000000004b3cdb [ 45.580016][ T8657] RDX: 0000000000000007 RSI: 000000c00000a200 RDI: 0000000000000006 [ 45.587975][ T8657] RBP: 000000c00074f590 R08: 000000c00000a201 R09: 0000000000000007 [ 45.595931][ T8657] R10: 000000c000092000 R11: 0000000000000202 R12: 000000000000011e [ 45.603987][ T8657] R13: 000000c0003e6000 R14: 0000000000000007 R15: 00000000000003a0 [ 46.714125][ T8657] Shutting down cpus with NMI [ 46.720371][ T8657] Kernel Offset: disabled [ 46.724689][ T8657] Rebooting in 86400 seconds..