Warning: Permanently added '10.128.0.253' (ECDSA) to the list of known hosts. 2020/06/07 21:35:26 fuzzer started 2020/06/07 21:35:26 dialing manager at 10.128.0.105:40519 2020/06/07 21:35:29 syscalls: 3055 2020/06/07 21:35:29 code coverage: enabled 2020/06/07 21:35:29 comparison tracing: enabled 2020/06/07 21:35:29 extra coverage: enabled 2020/06/07 21:35:29 setuid sandbox: enabled 2020/06/07 21:35:29 namespace sandbox: enabled 2020/06/07 21:35:29 Android sandbox: /sys/fs/selinux/policy does not exist 2020/06/07 21:35:29 fault injection: enabled 2020/06/07 21:35:29 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/06/07 21:35:29 net packet injection: enabled 2020/06/07 21:35:29 net device setup: enabled 2020/06/07 21:35:29 concurrency sanitizer: enabled 2020/06/07 21:35:29 devlink PCI setup: PCI device 0000:00:10.0 is not available 2020/06/07 21:35:29 USB emulation: enabled [ 56.278210][ T8919] KCSAN: could not find function: '_find_next_bit' 2020/06/07 21:35:32 adding functions to KCSAN blacklist: 'find_get_pages_range_tag' 'run_timer_softirq' '_find_next_bit' 'copy_process' 'ext4_mark_iloc_dirty' 'exit_signals' 'dd_has_work' 'ext4_free_inodes_count' '__mark_inode_dirty' '__mpage_writepage' 'tick_nohz_idle_stop_tick' 'futex_wait_queue_me' 'ktime_get_real_seconds' 'do_signal_stop' 'tick_sched_do_timer' 'ep_poll' '__send_signal' 'do_nanosleep' 'generic_fillattr' 'generic_write_end' 'page_counter_charge' 'do_syslog' 'xas_clear_mark' '__ext4_new_inode' [ 92.774966][ T8904] ================================================================== [ 92.783242][ T8904] BUG: KCSAN: data-race in mod_timer / timer_clear_idle [ 92.790260][ T8904] [ 92.792723][ T8904] write to 0xffff88812c01dca4 of 1 bytes by task 0 on cpu 0: [ 92.800325][ T8904] timer_clear_idle+0x3d/0x50 [ 92.804987][ T8904] __tick_nohz_idle_restart_tick+0x32/0x1a0 [ 92.810872][ T8904] tick_nohz_idle_exit+0x19c/0x1d0 [ 92.815979][ T8904] do_idle+0xac/0x290 [ 92.819979][ T8904] cpu_startup_entry+0x14/0x20 [ 92.824742][ T8904] rest_init+0xe4/0xeb [ 92.828795][ T8904] arch_call_rest_init+0x13/0x2b [ 92.833716][ T8904] start_kernel+0x7fe/0x823 [ 92.838224][ T8904] secondary_startup_64+0xa4/0xb0 [ 92.843219][ T8904] [ 92.845535][ T8904] read to 0xffff88812c01dca4 of 1 bytes by task 8904 on cpu 1: [ 92.853305][ T8904] mod_timer+0x631/0x830 [ 92.857542][ T8904] sk_reset_timer+0x29/0xc0 [ 92.862028][ T8904] tcp_rearm_rto+0x1ce/0x280 [ 92.866724][ T8904] tcp_event_new_data_sent+0x23f/0x260 [ 92.872307][ T8904] tcp_write_xmit+0x5c6/0x31e0 [ 92.877074][ T8904] __tcp_push_pending_frames+0x72/0x1b0 [ 92.882671][ T8904] tcp_push+0x1ec/0x3e0 [ 92.886831][ T8904] tcp_sendmsg_locked+0x1de3/0x20f0 [ 92.892026][ T8904] tcp_sendmsg+0x35/0x50 [ 92.896335][ T8904] inet_sendmsg+0x69/0x90 [ 92.900658][ T8904] sock_sendmsg+0x98/0xc0 [ 92.904970][ T8904] sock_write_iter+0x186/0x240 [ 92.909725][ T8904] new_sync_write+0x303/0x400 [ 92.914571][ T8904] __vfs_write+0x9e/0xb0 [ 92.918800][ T8904] vfs_write+0x189/0x380 [ 92.923047][ T8904] ksys_write+0x16a/0x1a0 [ 92.927362][ T8904] __x64_sys_write+0x49/0x60 [ 92.931936][ T8904] do_syscall_64+0xc7/0x3b0 [ 92.937004][ T8904] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 92.942872][ T8904] [ 92.945181][ T8904] Reported by Kernel Concurrency Sanitizer on: [ 92.951328][ T8904] CPU: 1 PID: 8904 Comm: syz-fuzzer Not tainted 5.7.0-rc1-syzkaller #0 [ 92.959575][ T8904] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 92.969606][ T8904] ================================================================== [ 92.977660][ T8904] Kernel panic - not syncing: panic_on_warn set ... [ 92.984487][ T8904] CPU: 1 PID: 8904 Comm: syz-fuzzer Not tainted 5.7.0-rc1-syzkaller #0 [ 92.992888][ T8904] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 93.003062][ T8904] Call Trace: [ 93.006478][ T8904] dump_stack+0x11d/0x187 [ 93.010829][ T8904] panic+0x210/0x640 [ 93.014886][ T8904] ? vprintk_func+0x89/0x13a [ 93.019609][ T8904] kcsan_report.cold+0xc/0x1a [ 93.024302][ T8904] kcsan_setup_watchpoint+0x3fb/0x440 [ 93.029847][ T8904] mod_timer+0x631/0x830 [ 93.034630][ T8904] sk_reset_timer+0x29/0xc0 [ 93.039400][ T8904] tcp_rearm_rto+0x1ce/0x280 [ 93.043981][ T8904] tcp_event_new_data_sent+0x23f/0x260 [ 93.049620][ T8904] tcp_write_xmit+0x5c6/0x31e0 [ 93.054382][ T8904] ? iov_iter_advance+0x21c/0x900 [ 93.059409][ T8904] __tcp_push_pending_frames+0x72/0x1b0 [ 93.065085][ T8904] tcp_push+0x1ec/0x3e0 [ 93.069345][ T8904] tcp_sendmsg_locked+0x1de3/0x20f0 [ 93.076702][ T8904] ? aa_label_sk_perm.part.0+0x220/0x290 [ 93.082400][ T8904] tcp_sendmsg+0x35/0x50 [ 93.086688][ T8904] inet_sendmsg+0x69/0x90 [ 93.091248][ T8904] ? inet_send_prepare+0x1f0/0x1f0 [ 93.096947][ T8904] sock_sendmsg+0x98/0xc0 [ 93.101885][ T8904] sock_write_iter+0x186/0x240 [ 93.106981][ T8904] new_sync_write+0x303/0x400 [ 93.111858][ T8904] __vfs_write+0x9e/0xb0 [ 93.116206][ T8904] vfs_write+0x189/0x380 [ 93.121041][ T8904] ksys_write+0x16a/0x1a0 [ 93.125935][ T8904] __x64_sys_write+0x49/0x60 [ 93.130544][ T8904] do_syscall_64+0xc7/0x3b0 [ 93.135300][ T8904] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 93.141353][ T8904] RIP: 0033:0x4b3cdb [ 93.145235][ T8904] Code: ff e9 69 ff ff ff cc cc cc cc cc cc cc cc cc e8 bb a1 f8 ff 48 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 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 [ 93.164948][ T8904] RSP: 002b:000000c0040b9540 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 [ 93.173339][ T8904] RAX: ffffffffffffffda RBX: 000000c00002c000 RCX: 00000000004b3cdb [ 93.181501][ T8904] RDX: 0000000000000007 RSI: 000000c00000a200 RDI: 0000000000000006 [ 93.189457][ T8904] RBP: 000000c0040b9590 R08: 000000c00000a201 R09: 0000000000000007 [ 93.197495][ T8904] R10: 000000c0000ac000 R11: 0000000000000202 R12: 000000000000011e [ 93.205641][ T8904] R13: 000000c0004a2000 R14: 0000000000000007 R15: 0000000000000b80 [ 94.308073][ T8904] Shutting down cpus with NMI [ 94.314469][ T8904] Kernel Offset: disabled [ 94.318812][ T8904] Rebooting in 86400 seconds..