Warning: Permanently added '10.128.0.154' (ECDSA) to the list of known hosts. 2021/01/26 21:15:55 fuzzer started 2021/01/26 21:15:55 dialing manager at 10.128.0.105:43031 2021/01/26 21:16:13 syscalls: 3466 2021/01/26 21:16:13 code coverage: enabled 2021/01/26 21:16:13 comparison tracing: enabled 2021/01/26 21:16:13 extra coverage: enabled 2021/01/26 21:16:13 setuid sandbox: enabled 2021/01/26 21:16:13 namespace sandbox: enabled 2021/01/26 21:16:13 Android sandbox: /sys/fs/selinux/policy does not exist 2021/01/26 21:16:13 fault injection: enabled 2021/01/26 21:16:13 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2021/01/26 21:16:13 net packet injection: enabled 2021/01/26 21:16:13 net device setup: enabled 2021/01/26 21:16:13 concurrency sanitizer: enabled 2021/01/26 21:16:13 devlink PCI setup: PCI device 0000:00:10.0 is not available 2021/01/26 21:16:13 USB emulation: enabled 2021/01/26 21:16:13 hci packet injection: enabled 2021/01/26 21:16:13 wifi device emulation: enabled 2021/01/26 21:16:17 suppressing KCSAN reports in functions: 'alloc_pid' 'futex_wait_queue_me' '__add_to_page_cache_locked' '__find_get_block' 'ext4_write_end' 'blk_mq_rq_ctx_init' 'ext4_free_inode' 'blk_mq_dispatch_rq_list' 'blk_mq_sched_dispatch_requests' '__mark_inode_dirty' 'wbt_done' 'fuse_set_nowrite' 'do_select' '__ext4_new_inode' 'pcpu_alloc' 'lru_add_drain_all' 'atime_needs_update' 'exit_mm' 'ext4_writepages' '__xa_clear_mark' 'expire_timers' 'generic_write_end' '_prb_read_valid' 'wbt_issue' 'ext4_mb_good_group' 'xas_find_marked' 'shmem_mknod' 'ext4_set_iomap' '__writeback_single_inode' 'do_signal_stop' 'do_sys_poll' 'blk_mq_request_bypass_insert' 'do_readlinkat' 'find_get_pages_range_tag' 'ext4_free_inodes_count' 'complete_signal' '__io_cqring_fill_event' '__delete_from_page_cache' 'ext4_mb_regular_allocator' 'kauditd_thread' 'bpf_lru_pop_free' 'ext4_mark_iloc_dirty' 'shmem_add_to_page_cache' 'shmem_symlink' 'do_nanosleep' 'n_tty_receive_buf_common' 'xas_clear_mark' '__ext4_update_other_inode_time' 'audit_log_start' 'shmem_unlink' 'dd_has_work' 2021/01/26 21:16:17 fetching corpus: 0, signal 0/2000 (executing program) 2021/01/26 21:16:17 fetching corpus: 43, signal 21869/25759 (executing program) 2021/01/26 21:16:17 fetching corpus: 93, signal 31010/36760 (executing program) 2021/01/26 21:16:17 fetching corpus: 143, signal 48468/55938 (executing program) 2021/01/26 21:16:17 fetching corpus: 193, signal 59514/68709 (executing program) 2021/01/26 21:16:17 fetching corpus: 243, signal 67143/78068 (executing program) 2021/01/26 21:16:17 fetching corpus: 293, signal 75492/88093 (executing program) 2021/01/26 21:16:17 fetching corpus: 343, signal 80003/94351 (executing program) 2021/01/26 21:16:18 fetching corpus: 393, signal 86178/102184 (executing program) 2021/01/26 21:16:18 fetching corpus: 443, signal 92492/110102 (executing program) 2021/01/26 21:16:18 fetching corpus: 493, signal 98210/117372 (executing program) 2021/01/26 21:16:18 fetching 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(executing program) 2021/01/26 21:16:34 fetching corpus: 8885, signal 347591/544599 (executing program) 2021/01/26 21:16:34 fetching corpus: 8935, signal 348302/546038 (executing program) 2021/01/26 21:16:34 fetching corpus: 8985, signal 348832/547419 (executing program) 2021/01/26 21:16:34 fetching corpus: 9035, signal 349505/548902 (executing program) syzkaller login: [ 69.159099][ T0] ================================================================== [ 69.167245][ T0] BUG: KCSAN: data-race in tick_nohz_next_event / tick_sched_timer [ 69.175270][ T0] [ 69.177590][ T0] write to 0xffffffff86fc24e0 of 4 bytes by interrupt on cpu 1: [ 69.185223][ T0] tick_sched_timer+0x1e7/0x200 [ 69.190081][ T0] __run_hrtimer+0x133/0x420 [ 69.194673][ T0] hrtimer_interrupt+0x36e/0xa10 [ 69.199611][ T0] __sysvec_apic_timer_interrupt+0x6f/0x200 2021/01/26 21:16:35 fetching corpus: 9085, signal 350129/550318 (executing program) [ 69.205514][ T0] sysvec_apic_timer_interrupt+0x6f/0x90 [ 69.211153][ T0] asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 69.217153][ T0] [ 69.219470][ T0] read to 0xffffffff86fc24e0 of 4 bytes by task 0 on cpu 0: [ 69.227189][ T0] tick_nohz_next_event+0x217/0x300 [ 69.232502][ T0] tick_nohz_get_sleep_length+0x121/0x270 [ 69.238226][ T0] menu_select+0x2fa/0xf40 [ 69.242637][ T0] cpuidle_select+0x3d/0x50 [ 69.247131][ T0] do_idle+0x15f/0x230 [ 69.251285][ T0] cpu_startup_entry+0x15/0x20 [ 69.256043][ T0] rest_init+0xd7/0xe0 [ 69.260104][ T0] arch_call_rest_init+0xa/0xb [ 69.264846][ T0] start_kernel+0x59b/0x620 [ 69.269340][ T0] secondary_startup_64_no_verify+0xb0/0xbb [ 69.275222][ T0] [ 69.277520][ T0] Reported by Kernel Concurrency Sanitizer on: [ 69.283639][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.11.0-rc5-syzkaller #0 [ 69.291691][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 69.302006][ T0] ================================================================== [ 69.310057][ T0] Kernel panic - not syncing: panic_on_warn set ... [ 69.316643][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.11.0-rc5-syzkaller #0 [ 69.324617][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 69.334661][ T0] Call Trace: [ 69.337925][ T0] dump_stack+0x116/0x15d [ 69.342234][ T0] panic+0x1e7/0x5fa [ 69.346107][ T0] ? vprintk_emit+0x2e2/0x360 [ 69.350762][ T0] kcsan_report+0x67b/0x680 [ 69.355256][ T0] ? kcsan_setup_watchpoint+0x47b/0x4e0 [ 69.360792][ T0] ? tick_nohz_next_event+0x217/0x300 [ 69.366157][ T0] ? tick_nohz_get_sleep_length+0x121/0x270 [ 69.372126][ T0] ? menu_select+0x2fa/0xf40 [ 69.376755][ T0] ? cpuidle_select+0x3d/0x50 [ 69.381424][ T0] ? do_idle+0x15f/0x230 [ 69.385656][ T0] ? cpu_startup_entry+0x15/0x20 [ 69.390579][ T0] ? rest_init+0xd7/0xe0 [ 69.394811][ T0] ? arch_call_rest_init+0xa/0xb [ 69.399742][ T0] ? start_kernel+0x59b/0x620 [ 69.404406][ T0] ? secondary_startup_64_no_verify+0xb0/0xbb [ 69.410540][ T0] ? ktime_get+0x1b0/0x1e0 [ 69.414938][ T0] ? _raw_spin_lock_irqsave+0x25/0x90 [ 69.420291][ T0] kcsan_setup_watchpoint+0x47b/0x4e0 [ 69.425642][ T0] tick_nohz_next_event+0x217/0x300 [ 69.430822][ T0] tick_nohz_get_sleep_length+0x121/0x270 [ 69.436533][ T0] menu_select+0x2fa/0xf40 [ 69.440930][ T0] ? _raw_spin_unlock_irq+0x22/0x40 [ 69.446128][ T0] ? finish_task_switch+0xc0/0x2a0 [ 69.451218][ T0] cpuidle_select+0x3d/0x50 [ 69.455703][ T0] do_idle+0x15f/0x230 [ 69.459747][ T0] cpu_startup_entry+0x15/0x20 [ 69.464485][ T0] rest_init+0xd7/0xe0 [ 69.468529][ T0] ? time_init+0xc/0xc [ 69.472574][ T0] arch_call_rest_init+0xa/0xb [ 69.477343][ T0] start_kernel+0x59b/0x620 [ 69.481837][ T0] secondary_startup_64_no_verify+0xb0/0xbb [ 69.488195][ T0] Kernel Offset: disabled [ 69.492515][ T0] Rebooting in 86400 seconds..