Warning: Permanently added '10.128.0.130' (ECDSA) to the list of known hosts. 2020/05/29 14:53:27 fuzzer started 2020/05/29 14:53:27 dialing manager at 10.128.0.105:37521 2020/05/29 14:53:33 syscalls: 3055 2020/05/29 14:53:33 code coverage: enabled 2020/05/29 14:53:33 comparison tracing: enabled 2020/05/29 14:53:33 extra coverage: enabled 2020/05/29 14:53:33 setuid sandbox: enabled 2020/05/29 14:53:33 namespace sandbox: enabled 2020/05/29 14:53:33 Android sandbox: /sys/fs/selinux/policy does not exist 2020/05/29 14:53:33 fault injection: enabled 2020/05/29 14:53:33 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/05/29 14:53:33 net packet injection: enabled 2020/05/29 14:53:33 net device setup: enabled 2020/05/29 14:53:33 concurrency sanitizer: enabled 2020/05/29 14:53:33 devlink PCI setup: PCI device 0000:00:10.0 is not available 2020/05/29 14:53:33 USB emulation: enabled syzkaller login: [ 58.487949][ T8917] KCSAN: could not find function: '_find_next_bit' 2020/05/29 14:53:35 adding functions to KCSAN blacklist: 'ext4_free_inodes_count' 'ext4_mb_good_group' 'file_update_time' 'tick_nohz_next_event' 'add_timer' '_find_next_bit' 'generic_fillattr' 'ep_poll' 'generic_write_end' 'kauditd_thread' 'n_tty_receive_buf_common' 'tick_nohz_idle_stop_tick' 'futex_wait_queue_me' 'page_counter_charge' 'find_get_pages_range_tag' 'xas_clear_mark' '__ext4_new_inode' 'copy_process' 'blk_mq_dispatch_rq_list' 'do_nanosleep' 'pcpu_alloc' [ 126.293357][ T8906] ================================================================== [ 126.301649][ T8906] BUG: KCSAN: data-race in mod_timer / timer_clear_idle [ 126.308721][ T8906] [ 126.311035][ T8906] write to 0xffff88812c11dca4 of 1 bytes by task 0 on cpu 1: [ 126.318387][ T8906] timer_clear_idle+0x3d/0x50 [ 126.323044][ T8906] __tick_nohz_idle_restart_tick+0x32/0x1a0 [ 126.328915][ T8906] tick_nohz_idle_exit+0x19c/0x1d0 [ 126.334002][ T8906] do_idle+0xac/0x290 [ 126.337962][ T8906] cpu_startup_entry+0x14/0x20 [ 126.342703][ T8906] start_secondary+0x169/0x1b0 [ 126.347465][ T8906] secondary_startup_64+0xa4/0xb0 [ 126.352490][ T8906] [ 126.354827][ T8906] read to 0xffff88812c11dca4 of 1 bytes by task 8906 on cpu 0: [ 126.362374][ T8906] mod_timer+0x631/0x830 [ 126.366794][ T8906] sk_reset_timer+0x29/0xc0 [ 126.371272][ T8906] tcp_rearm_rto+0x1ce/0x280 [ 126.375856][ T8906] tcp_event_new_data_sent+0x23f/0x260 [ 126.381290][ T8906] tcp_write_xmit+0x5c6/0x31e0 [ 126.386036][ T8906] __tcp_push_pending_frames+0x72/0x1b0 [ 126.391553][ T8906] tcp_push+0x1ec/0x3e0 [ 126.395683][ T8906] tcp_sendmsg_locked+0x1de3/0x20f0 [ 126.400853][ T8906] tcp_sendmsg+0x35/0x50 [ 126.405089][ T8906] inet_sendmsg+0x69/0x90 [ 126.409431][ T8906] sock_sendmsg+0x98/0xc0 [ 126.413758][ T8906] sock_write_iter+0x186/0x240 [ 126.418501][ T8906] new_sync_write+0x303/0x400 [ 126.423170][ T8906] __vfs_write+0x9e/0xb0 [ 126.427423][ T8906] vfs_write+0x189/0x380 [ 126.431655][ T8906] ksys_write+0x16a/0x1a0 [ 126.435976][ T8906] __x64_sys_write+0x49/0x60 [ 126.440542][ T8906] do_syscall_64+0xc7/0x3b0 [ 126.445029][ T8906] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 126.450887][ T8906] [ 126.453187][ T8906] Reported by Kernel Concurrency Sanitizer on: [ 126.463762][ T8906] CPU: 0 PID: 8906 Comm: syz-fuzzer Not tainted 5.7.0-rc1-syzkaller #0 [ 126.471968][ T8906] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 126.481996][ T8906] ================================================================== [ 126.490036][ T8906] Kernel panic - not syncing: panic_on_warn set ... [ 126.496597][ T8906] CPU: 0 PID: 8906 Comm: syz-fuzzer Not tainted 5.7.0-rc1-syzkaller #0 [ 126.504819][ T8906] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 126.514861][ T8906] Call Trace: [ 126.518131][ T8906] dump_stack+0x11d/0x187 [ 126.522460][ T8906] panic+0x210/0x640 [ 126.526353][ T8906] ? vprintk_func+0x89/0x13a [ 126.530921][ T8906] kcsan_report.cold+0xc/0x1a [ 126.535584][ T8906] kcsan_setup_watchpoint+0x3fb/0x440 [ 126.540940][ T8906] mod_timer+0x631/0x830 [ 126.545165][ T8906] sk_reset_timer+0x29/0xc0 [ 126.549661][ T8906] tcp_rearm_rto+0x1ce/0x280 [ 126.554230][ T8906] tcp_event_new_data_sent+0x23f/0x260 [ 126.559682][ T8906] tcp_write_xmit+0x5c6/0x31e0 [ 126.564431][ T8906] ? iov_iter_advance+0x21c/0x900 [ 126.569463][ T8906] __tcp_push_pending_frames+0x72/0x1b0 [ 126.574990][ T8906] tcp_push+0x1ec/0x3e0 [ 126.579138][ T8906] tcp_sendmsg_locked+0x1de3/0x20f0 [ 126.584332][ T8906] ? aa_label_sk_perm.part.0+0x220/0x290 [ 126.589998][ T8906] tcp_sendmsg+0x35/0x50 [ 126.594243][ T8906] inet_sendmsg+0x69/0x90 [ 126.598556][ T8906] ? inet_send_prepare+0x1f0/0x1f0 [ 126.603648][ T8906] sock_sendmsg+0x98/0xc0 [ 126.607961][ T8906] sock_write_iter+0x186/0x240 [ 126.612709][ T8906] new_sync_write+0x303/0x400 [ 126.617370][ T8906] __vfs_write+0x9e/0xb0 [ 126.621623][ T8906] vfs_write+0x189/0x380 [ 126.625859][ T8906] ksys_write+0x16a/0x1a0 [ 126.630172][ T8906] __x64_sys_write+0x49/0x60 [ 126.634746][ T8906] do_syscall_64+0xc7/0x3b0 [ 126.639249][ T8906] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 126.645239][ T8906] RIP: 0033:0x4b3cdb [ 126.649134][ T8906] 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 [ 126.669842][ T8906] RSP: 002b:000000c006683540 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 [ 126.678264][ T8906] RAX: ffffffffffffffda RBX: 000000c00002c000 RCX: 00000000004b3cdb [ 126.686320][ T8906] RDX: 0000000000000007 RSI: 000000c00000a3e0 RDI: 0000000000000006 [ 126.694288][ T8906] RBP: 000000c006683590 R08: 000000c00000a301 R09: 0000000000000007 [ 126.702237][ T8906] R10: 000000c0000ae000 R11: 0000000000000202 R12: 000000000000011e [ 126.710201][ T8906] R13: 000000c000250000 R14: 0000000000000007 R15: 0000000000005b00 [ 127.793061][ T8906] Shutting down cpus with NMI [ 127.799224][ T8906] Kernel Offset: disabled [ 127.803741][ T8906] Rebooting in 86400 seconds..