Warning: Permanently added '10.128.0.44' (ECDSA) to the list of known hosts. 2020/05/24 15:08:01 fuzzer started 2020/05/24 15:08:01 dialing manager at 10.128.0.105:40647 2020/05/24 15:08:01 syscalls: 3055 2020/05/24 15:08:01 code coverage: enabled 2020/05/24 15:08:01 comparison tracing: enabled 2020/05/24 15:08:01 extra coverage: enabled 2020/05/24 15:08:01 setuid sandbox: enabled 2020/05/24 15:08:01 namespace sandbox: enabled 2020/05/24 15:08:01 Android sandbox: /sys/fs/selinux/policy does not exist 2020/05/24 15:08:01 fault injection: enabled 2020/05/24 15:08:01 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/05/24 15:08:01 net packet injection: enabled 2020/05/24 15:08:01 net device setup: enabled 2020/05/24 15:08:01 concurrency sanitizer: enabled 2020/05/24 15:08:01 devlink PCI setup: PCI device 0000:00:10.0 is not available 2020/05/24 15:08:01 USB emulation: enabled syzkaller login: [ 50.420832][ T8916] KCSAN: could not find function: '_find_next_bit' 2020/05/24 15:08:05 adding functions to KCSAN blacklist: 'io_sq_thread' 'blk_mq_get_request' 'install_new_memslots' 'xas_find_marked' '__delete_from_page_cache' '_find_next_bit' '__snd_rawmidi_transmit_ack' 'copy_process' 'blk_mq_dispatch_rq_list' 'echo_char' 'page_counter_charge' 'tick_nohz_idle_stop_tick' 'ext4_mb_find_by_goal' 'blk_mq_sched_dispatch_requests' 'do_nanosleep' '__mark_inode_dirty' 'vm_area_dup' '__mpage_writepage' 'alloc_pid' 'find_get_pages_range_tag' 'generic_write_end' '__add_to_page_cache_locked' '__ext4_new_inode' 'ext4_mark_iloc_dirty' 'mod_timer' 'dd_has_work' 'ep_poll' 'run_timer_softirq' 'do_exit' 'shmem_file_read_iter' 'pcpu_alloc' 'kauditd_thread' 'ext4_free_inodes_count' [ 87.191439][ C0] ================================================================== [ 87.199605][ C0] BUG: KCSAN: data-race in tick_sched_do_timer / tick_sched_do_timer [ 87.207639][ C0] [ 87.209945][ C0] write to 0xffffffff8764e210 of 4 bytes by interrupt on cpu 1: [ 87.217776][ C0] tick_sched_do_timer+0xb4/0xd0 [ 87.222872][ C0] tick_sched_timer+0x3f/0xd0 [ 87.227529][ C0] __hrtimer_run_queues+0x271/0x600 [ 87.232704][ C0] hrtimer_interrupt+0x226/0x490 [ 87.237635][ C0] smp_apic_timer_interrupt+0xd8/0x270 [ 87.243124][ C0] apic_timer_interrupt+0xf/0x20 [ 87.248042][ C0] [ 87.250348][ C0] read to 0xffffffff8764e210 of 4 bytes by interrupt on cpu 0: [ 87.257868][ C0] tick_sched_do_timer+0x2e/0xd0 [ 87.262796][ C0] tick_sched_timer+0x3f/0xd0 [ 87.267459][ C0] __hrtimer_run_queues+0x271/0x600 [ 87.272653][ C0] hrtimer_interrupt+0x226/0x490 [ 87.277674][ C0] smp_apic_timer_interrupt+0xd8/0x270 [ 87.283122][ C0] apic_timer_interrupt+0xf/0x20 [ 87.288027][ C0] [ 87.290345][ C0] Reported by Kernel Concurrency Sanitizer on: [ 87.296489][ C0] CPU: 0 PID: 8907 Comm: syz-fuzzer Not tainted 5.7.0-rc1-syzkaller #0 [ 87.304705][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 87.314749][ C0] ================================================================== [ 87.322800][ C0] Kernel panic - not syncing: panic_on_warn set ... [ 87.329373][ C0] CPU: 0 PID: 8907 Comm: syz-fuzzer Not tainted 5.7.0-rc1-syzkaller #0 [ 87.337756][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 87.347795][ C0] Call Trace: [ 87.351063][ C0] [ 87.353898][ C0] dump_stack+0x11d/0x187 [ 87.358216][ C0] panic+0x210/0x640 [ 87.362102][ C0] ? vprintk_func+0x89/0x13a [ 87.366700][ C0] kcsan_report.cold+0xc/0x1a [ 87.371367][ C0] kcsan_setup_watchpoint+0x3fb/0x440 [ 87.376721][ C0] tick_sched_do_timer+0x2e/0xd0 [ 87.381637][ C0] tick_sched_timer+0x3f/0xd0 [ 87.386303][ C0] __hrtimer_run_queues+0x271/0x600 [ 87.392865][ C0] ? tick_sched_do_timer+0xd0/0xd0 [ 87.397951][ C0] hrtimer_interrupt+0x226/0x490 [ 87.402960][ C0] ? kvm_clock_read+0x14/0x30 [ 87.407620][ C0] smp_apic_timer_interrupt+0xd8/0x270 [ 87.413193][ C0] apic_timer_interrupt+0xf/0x20 [ 87.418194][ C0] [ 87.421110][ C0] RIP: 0033:0x409df9 [ 87.425091][ C0] Code: f6 c1 04 0f 85 46 01 00 00 0f b6 48 09 84 c9 0f 85 86 00 00 00 48 8b 40 10 eb 58 48 ff c2 48 83 c1 04 48 83 fa 08 73 38 8b 19 <8b> 74 24 38 39 f3 75 e9 0f b6 1c 02 84 db 74 e1 48 8b 4c 24 28 0f [ 87.444709][ C0] RSP: 002b:000000c42310d7d0 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 [ 87.453097][ C0] RAX: 000000c42286ba88 RBX: 000000008e90d565 RCX: 000000c42286ba90 [ 87.461153][ C0] RDX: 0000000000000000 RSI: 0000000000869ec0 RDI: 0000000000000038 [ 87.469105][ C0] RBP: 000000c42310d7e8 R08: 0000000000000000 R09: 000000c425d40974 [ 87.477070][ C0] R10: 000000c425d40958 R11: 0000000000000005 R12: 0000000000000002 [ 87.485018][ C0] R13: ffffffffffffffff R14: 0000000000000005 R15: 0000000000000001 [ 87.494521][ C0] Kernel Offset: disabled [ 87.498839][ C0] Rebooting in 86400 seconds..