Warning: Permanently added '10.128.0.166' (ECDSA) to the list of known hosts. 2021/02/01 02:54:51 fuzzer started 2021/02/01 02:54:51 dialing manager at 10.128.0.105:46629 2021/02/01 02:54:56 syscalls: 3466 2021/02/01 02:54:56 code coverage: enabled 2021/02/01 02:54:56 comparison tracing: enabled 2021/02/01 02:54:56 extra coverage: enabled 2021/02/01 02:54:56 setuid sandbox: enabled 2021/02/01 02:54:56 namespace sandbox: enabled 2021/02/01 02:54:56 Android sandbox: /sys/fs/selinux/policy does not exist 2021/02/01 02:54:56 fault injection: enabled 2021/02/01 02:54:56 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2021/02/01 02:54:56 net packet injection: enabled 2021/02/01 02:54:56 net device setup: enabled 2021/02/01 02:54:56 concurrency sanitizer: enabled 2021/02/01 02:54:56 devlink PCI setup: PCI device 0000:00:10.0 is not available 2021/02/01 02:54:56 USB emulation: enabled 2021/02/01 02:54:56 hci packet injection: enabled 2021/02/01 02:54:56 wifi device emulation: enabled 2021/02/01 02:54:59 suppressing KCSAN reports in functions: 'ext4_ext_insert_extent' 'complete_signal' 'ext4_sync_file' 'dev_uevent' 'blk_mq_rq_ctx_init' 'ext4_mb_good_group' 'do_select' 'xas_find_marked' 'step_into' 'ext4_set_iomap' 'ext4_ext_try_to_merge_right' 'blk_mq_dispatch_rq_list' 'n_tty_receive_buf_common' '__io_cqring_overflow_flush' 'expire_timers' 'futex_wait_queue_me' 'alloc_pid' '__ext4_new_inode' 'ext4_mb_regular_allocator' 'exit_mm' 'pcpu_alloc' 'generic_write_end' 'blk_mq_sched_dispatch_requests' 'filemap_map_pages' 'shmem_unlink' 'ext4_free_inodes_count' 'dd_has_work' '_prb_read_valid' 'wbt_issue' 'ext4_free_inode' 'xas_clear_mark' 'ext4_writepages' '__writeback_single_inode' 'do_sys_poll' 'generic_file_buffered_read' 'ext4_mark_iloc_dirty' 'isolate_migratepages_block' '__add_to_page_cache_locked' 'do_nanosleep' 'shmem_add_to_page_cache' '__xa_clear_mark' 'wbt_done' 2021/02/01 02:54:59 fetching corpus: 0, signal 0/2000 (executing program) 2021/02/01 02:54:59 fetching 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2021/02/01 02:55:19 fetching corpus: 16596, signal 334171/434599 (executing program) 2021/02/01 02:55:19 fetching corpus: 16646, signal 334502/434599 (executing program) syzkaller login: [ 57.553993][ T0] ================================================================== [ 57.562186][ T0] BUG: KCSAN: data-race in tick_nohz_next_event / tick_sched_timer [ 57.570087][ T0] [ 57.572402][ T0] write to 0xffffffff86fc1060 of 4 bytes by interrupt on cpu 0: [ 57.580019][ T0] tick_sched_timer+0x1f5/0x210 [ 57.584864][ T0] __run_hrtimer+0x163/0x460 [ 57.589429][ T0] hrtimer_interrupt+0x36e/0xa30 [ 57.594360][ T0] __sysvec_apic_timer_interrupt+0x6f/0x200 [ 57.600228][ T0] sysvec_apic_timer_interrupt+0x6f/0x90 [ 57.605838][ T0] asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 57.611793][ T0] [ 57.614089][ T0] read to 0xffffffff86fc1060 of 4 bytes by task 0 on cpu 1: [ 57.621345][ T0] tick_nohz_next_event+0x217/0x300 [ 57.626531][ T0] tick_nohz_get_sleep_length+0x121/0x280 [ 57.632277][ T0] menu_select+0x2f6/0x1000 [ 57.636750][ T0] cpuidle_select+0x3d/0x50 [ 57.641244][ T0] do_idle+0x15f/0x230 [ 57.645290][ T0] cpu_startup_entry+0x15/0x20 [ 57.650038][ T0] secondary_startup_64_no_verify+0xb0/0xbb [ 57.655923][ T0] [ 57.658228][ T0] Reported by Kernel Concurrency Sanitizer on: [ 57.664352][ T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.11.0-rc6-syzkaller #0 [ 57.672314][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.682354][ T0] ================================================================== [ 57.690390][ T0] Kernel panic - not syncing: panic_on_warn set ... [ 57.696999][ T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.11.0-rc6-syzkaller #0 [ 57.704955][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.714998][ T0] Call Trace: [ 57.718263][ T0] dump_stack+0x116/0x15d [ 57.722583][ T0] panic+0x1e7/0x5fa [ 57.726460][ T0] ? vprintk_emit+0x2e2/0x360 [ 57.731115][ T0] kcsan_report+0x67b/0x680 [ 57.735606][ T0] ? kcsan_setup_watchpoint+0x472/0x4d0 [ 57.741123][ T0] ? tick_nohz_next_event+0x217/0x300 [ 57.746586][ T0] ? tick_nohz_get_sleep_length+0x121/0x280 [ 57.752470][ T0] ? menu_select+0x2f6/0x1000 [ 57.757127][ T0] ? cpuidle_select+0x3d/0x50 [ 57.761795][ T0] ? do_idle+0x15f/0x230 [ 57.766021][ T0] ? cpu_startup_entry+0x15/0x20 [ 57.770946][ T0] ? secondary_startup_64_no_verify+0xb0/0xbb [ 57.777016][ T0] ? ktime_get+0x1b0/0x1e0 [ 57.781413][ T0] kcsan_setup_watchpoint+0x472/0x4d0 [ 57.786778][ T0] tick_nohz_next_event+0x217/0x300 [ 57.791961][ T0] tick_nohz_get_sleep_length+0x121/0x280 [ 57.797718][ T0] menu_select+0x2f6/0x1000 [ 57.802211][ T0] ? _raw_spin_unlock_irq+0x22/0x40 [ 57.807386][ T0] cpuidle_select+0x3d/0x50 [ 57.811878][ T0] do_idle+0x15f/0x230 [ 57.815930][ T0] cpu_startup_entry+0x15/0x20 [ 57.820667][ T0] secondary_startup_64_no_verify+0xb0/0xbb [ 57.827059][ T0] Kernel Offset: disabled [ 57.831363][ T0] Rebooting in 86400 seconds..