Warning: Permanently added '10.128.0.197' (ECDSA) to the list of known hosts. 2020/09/26 06:04:47 fuzzer started 2020/09/26 06:04:47 dialing manager at 10.128.0.105:46601 2020/09/26 06:04:47 syscalls: 3358 2020/09/26 06:04:47 code coverage: enabled 2020/09/26 06:04:47 comparison tracing: enabled 2020/09/26 06:04:47 extra coverage: enabled 2020/09/26 06:04:47 setuid sandbox: enabled 2020/09/26 06:04:47 namespace sandbox: enabled 2020/09/26 06:04:47 Android sandbox: /sys/fs/selinux/policy does not exist 2020/09/26 06:04:47 fault injection: enabled 2020/09/26 06:04:47 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/09/26 06:04:47 net packet injection: enabled 2020/09/26 06:04:47 net device setup: enabled 2020/09/26 06:04:47 concurrency sanitizer: enabled 2020/09/26 06:04:47 devlink PCI setup: PCI device 0000:00:10.0 is not available 2020/09/26 06:04:47 USB emulation: enabled 2020/09/26 06:04:47 hci packet injection: enabled 2020/09/26 06:04:47 wifi device emulation: enabled 2020/09/26 06:04:51 suppressing KCSAN reports in functions: '__xa_clear_mark' 'ext4_free_inodes_count' '__delayacct_blkio_end' 'ext4_mark_iloc_dirty' 'shmem_mknod' '__process_echoes' '__ext4_new_inode' 'blk_mq_dispatch_rq_list' 'blk_mq_sched_dispatch_requests' 'alloc_pid' 'ext4_ext_insert_extent' 'dd_has_work' '__add_to_page_cache_locked' 'ext4_writepages' '__writeback_single_inode' '__send_signal' 'generic_write_end' 'n_tty_receive_buf_common' 'kauditd_thread' 'do_signal_stop' 'lookup_fast' 'exit_mm' 'xas_find_marked' 'expire_timers' 'wbt_done' 'find_get_pages_range_tag' 'pcpu_alloc' 'fifo_open' 'blk_mq_rq_ctx_init' '__delete_from_page_cache' 'do_sys_poll' '__mark_inode_dirty' 'futex_wait_queue_me' 'complete_signal' 'ext4_free_inode' 'do_select' 'blk_mq_do_dispatch_sched' 'do_nanosleep' 'ext4_mb_find_by_goal' 'snd_rawmidi_poll' 'ext4_setattr' 'ext4_mb_regular_allocator' 'audit_log_start' 'n_tty_receive_char_inline' 'ext4_mb_good_group' '__io_cqring_fill_event' 'do_syslog' 'blk_mq_request_bypass_insert' 'io_sq_thread' syzkaller login: [ 62.748573][ T0] ================================================================== [ 62.757140][ T0] BUG: KCSAN: data-race in tick_nohz_next_event / tick_sched_timer [ 62.765114][ T0] [ 62.767422][ T0] write to 0xffffffff88164bd0 of 4 bytes by interrupt on cpu 0: [ 62.775150][ T0] tick_sched_timer+0x214/0x230 [ 62.779999][ T0] __run_hrtimer+0x154/0x4b0 [ 62.784697][ T0] hrtimer_interrupt+0x37c/0xa40 [ 62.789632][ T0] __sysvec_apic_timer_interrupt+0xa3/0x280 [ 62.795643][ T0] sysvec_apic_timer_interrupt+0xb5/0xd0 [ 62.801518][ T0] asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 62.807649][ T0] [ 62.809970][ T0] read to 0xffffffff88164bd0 of 4 bytes by task 0 on cpu 1: [ 62.817240][ T0] tick_nohz_next_event+0x21d/0x310 [ 62.822451][ T0] tick_nohz_get_sleep_length+0xca/0x140 [ 62.828069][ T0] menu_select+0x328/0x1030 [ 62.832577][ T0] cpuidle_select+0x3d/0x50 [ 62.837083][ T0] do_idle+0x1ae/0x2c0 [ 62.841146][ T0] cpu_startup_entry+0x15/0x20 [ 62.845894][ T0] secondary_startup_64+0xa4/0xb0 [ 62.850920][ T0] [ 62.853250][ T0] Reported by Kernel Concurrency Sanitizer on: [ 62.859412][ T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.9.0-rc6-syzkaller #0 [ 62.867280][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.877502][ T0] ================================================================== [ 62.885532][ T0] Kernel panic - not syncing: panic_on_warn set ... [ 62.892093][ T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.9.0-rc6-syzkaller #0 [ 62.899971][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.910012][ T0] Call Trace: [ 62.913314][ T0] dump_stack+0x10f/0x19d [ 62.917645][ T0] panic+0x207/0x64a [ 62.921529][ T0] ? vprintk_emit+0x44a/0x4f0 [ 62.926203][ T0] kcsan_report+0x684/0x690 [ 62.930703][ T0] ? kcsan_setup_watchpoint+0x41e/0x4a0 [ 62.936242][ T0] ? tick_nohz_next_event+0x21d/0x310 [ 62.941600][ T0] ? tick_nohz_get_sleep_length+0xca/0x140 [ 62.947391][ T0] ? menu_select+0x328/0x1030 [ 62.952097][ T0] ? cpuidle_select+0x3d/0x50 [ 62.956773][ T0] ? do_idle+0x1ae/0x2c0 [ 62.961000][ T0] ? cpu_startup_entry+0x15/0x20 [ 62.965923][ T0] ? secondary_startup_64+0xa4/0xb0 [ 62.971135][ T0] kcsan_setup_watchpoint+0x41e/0x4a0 [ 62.976506][ T0] tick_nohz_next_event+0x21d/0x310 [ 62.981692][ T0] tick_nohz_get_sleep_length+0xca/0x140 [ 62.987327][ T0] menu_select+0x328/0x1030 [ 62.991823][ T0] ? _raw_spin_unlock_irq+0x4b/0x70 [ 62.997023][ T0] cpuidle_select+0x3d/0x50 [ 63.001520][ T0] do_idle+0x1ae/0x2c0 [ 63.005576][ T0] cpu_startup_entry+0x15/0x20 [ 63.010332][ T0] secondary_startup_64+0xa4/0xb0 [ 63.016607][ T0] Kernel Offset: disabled [ 63.020923][ T0] Rebooting in 86400 seconds..