Warning: Permanently added '10.128.1.25' (ECDSA) to the list of known hosts. 2020/06/10 13:49:10 fuzzer started 2020/06/10 13:49:10 dialing manager at 10.128.0.105:34607 2020/06/10 13:49:10 syscalls: 3076 2020/06/10 13:49:10 code coverage: enabled 2020/06/10 13:49:10 comparison tracing: enabled 2020/06/10 13:49:10 extra coverage: enabled 2020/06/10 13:49:10 setuid sandbox: enabled 2020/06/10 13:49:10 namespace sandbox: enabled 2020/06/10 13:49:10 Android sandbox: /sys/fs/selinux/policy does not exist 2020/06/10 13:49:10 fault injection: enabled 2020/06/10 13:49:10 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/06/10 13:49:10 net packet injection: enabled 2020/06/10 13:49:10 net device setup: enabled 2020/06/10 13:49:10 concurrency sanitizer: enabled 2020/06/10 13:49:10 devlink PCI setup: PCI device 0000:00:10.0 is not available 2020/06/10 13:49:10 USB emulation: enabled syzkaller login: [ 53.023821][ T8900] KCSAN: could not find function: '_find_next_bit' 2020/06/10 13:49:14 adding functions to KCSAN blacklist: 'blk_mq_dispatch_rq_list' 'ext4_da_write_end' 'futex_wait_queue_me' 'ep_poll' 'copy_process' '__ext4_new_inode' 'ktime_get_real_seconds' 'blk_mq_sched_dispatch_requests' 'page_counter_charge' 'pcpu_alloc' 'find_get_pages_range_tag' 'generic_write_end' 'blk_mq_get_request' '_find_next_bit' 'do_nanosleep' 'run_timer_softirq' 'echo_char' 'tick_nohz_next_event' 'commit_echoes' 'ext4_handle_inode_extension' 'ext4_free_inodes_count' 'ext4_mark_iloc_dirty' 'dd_has_work' 'xas_clear_mark' 'mod_timer' 'generic_fillattr' [ 90.265602][ C1] ================================================================== [ 90.273756][ C1] BUG: KCSAN: data-race in tick_sched_do_timer / tick_sched_do_timer [ 90.281812][ C1] [ 90.284153][ C1] write to 0xffffffff8764e210 of 4 bytes by interrupt on cpu 0: [ 90.291795][ C1] tick_sched_do_timer+0xb4/0xd0 [ 90.296769][ C1] tick_sched_timer+0x3f/0xd0 [ 90.302222][ C1] __hrtimer_run_queues+0x271/0x600 [ 90.307399][ C1] hrtimer_interrupt+0x226/0x490 [ 90.312369][ C1] smp_apic_timer_interrupt+0xd8/0x270 [ 90.317857][ C1] apic_timer_interrupt+0xf/0x20 [ 90.322773][ C1] write_comp_data+0x1e/0x70 [ 90.327340][ C1] iov_iter_init+0x38/0x110 [ 90.331925][ C1] new_sync_read+0x3f3/0x450 [ 90.336492][ C1] __vfs_read+0x9e/0xb0 [ 90.340623][ C1] vfs_read+0x13e/0x2b0 [ 90.344750][ C1] ksys_read+0x16a/0x1a0 [ 90.348965][ C1] __x64_sys_read+0x49/0x60 [ 90.353446][ C1] do_syscall_64+0xc7/0x3b0 [ 90.357926][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 90.363784][ C1] [ 90.366107][ C1] read to 0xffffffff8764e210 of 4 bytes by interrupt on cpu 1: [ 90.373625][ C1] tick_sched_do_timer+0x2e/0xd0 [ 90.378552][ C1] tick_sched_timer+0x3f/0xd0 [ 90.383218][ C1] __hrtimer_run_queues+0x271/0x600 [ 90.388395][ C1] hrtimer_interrupt+0x226/0x490 [ 90.393310][ C1] smp_apic_timer_interrupt+0xd8/0x270 [ 90.398743][ C1] apic_timer_interrupt+0xf/0x20 [ 90.403664][ C1] __tsan_unaligned_write8+0x33/0x110 [ 90.409008][ C1] hrtimer_nanosleep+0xd6/0x230 [ 90.413831][ C1] __x64_sys_nanosleep+0x14b/0x190 [ 90.418919][ C1] do_syscall_64+0xc7/0x3b0 [ 90.423403][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 90.429261][ C1] [ 90.431561][ C1] Reported by Kernel Concurrency Sanitizer on: [ 90.437710][ C1] CPU: 1 PID: 8887 Comm: syz-fuzzer Not tainted 5.7.0-rc1-syzkaller #0 [ 90.445931][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 90.455957][ C1] ================================================================== [ 90.464007][ C1] Kernel panic - not syncing: panic_on_warn set ... [ 90.470566][ C1] CPU: 1 PID: 8887 Comm: syz-fuzzer Not tainted 5.7.0-rc1-syzkaller #0 [ 90.478775][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 90.488816][ C1] Call Trace: [ 90.492074][ C1] [ 90.494923][ C1] dump_stack+0x11d/0x187 [ 90.499231][ C1] panic+0x210/0x640 [ 90.503149][ C1] ? vprintk_func+0x89/0x13a [ 90.507739][ C1] kcsan_report.cold+0xc/0x1a [ 90.512518][ C1] kcsan_setup_watchpoint+0x3fb/0x440 [ 90.517887][ C1] tick_sched_do_timer+0x2e/0xd0 [ 90.522826][ C1] tick_sched_timer+0x3f/0xd0 [ 90.527485][ C1] __hrtimer_run_queues+0x271/0x600 [ 90.532682][ C1] ? tick_sched_do_timer+0xd0/0xd0 [ 90.537773][ C1] hrtimer_interrupt+0x226/0x490 [ 90.542705][ C1] ? kvm_clock_read+0x14/0x30 [ 90.547361][ C1] smp_apic_timer_interrupt+0xd8/0x270 [ 90.552794][ C1] apic_timer_interrupt+0xf/0x20 [ 90.557702][ C1] [ 90.560647][ C1] RIP: 0010:__tsan_unaligned_write8+0x33/0x110 [ 90.566779][ C1] Code: 00 48 89 f8 49 89 fa 48 c1 e8 09 49 21 d2 48 89 d6 4d 8d 5a 07 25 f8 01 00 00 48 8d 88 40 03 af 88 48 05 58 03 af 88 4c 8b 01 <49> 83 f8 01 76 26 4c 89 c2 4d 89 c1 48 c1 ea 31 49 21 f1 81 e2 ff [ 90.586358][ C1] RSP: 0018:ffffc90001e0fe48 EFLAGS: 00000292 ORIG_RAX: ffffffffffffff13 [ 90.594759][ C1] RAX: ffffffff88af03d0 RBX: 0000000000011170 RCX: ffffffff88af03b8 [ 90.602723][ C1] RDX: 0000ffffffffffff RSI: 0000ffffffffffff RDI: ffffc90001e0fe78 [ 90.610687][ C1] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000888128c720e4 [ 90.618659][ C1] R10: 0000c90001e0fe78 R11: 0000c90001e0fe7f R12: 0000000000004e20 [ 90.626723][ C1] R13: 7fffffffffffffff R14: 000000000000c350 R15: 0000000000000001 [ 90.634703][ C1] hrtimer_nanosleep+0xd6/0x230 [ 90.639542][ C1] ? hrtimer_active+0x1b0/0x1b0 [ 90.644369][ C1] __x64_sys_nanosleep+0x14b/0x190 [ 90.649472][ C1] do_syscall_64+0xc7/0x3b0 [ 90.653953][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 90.659822][ C1] RIP: 0033:0x468a8d [ 90.663695][ C1] Code: 8b 44 24 20 b9 40 42 0f 00 f7 f1 48 89 04 24 b8 e8 03 00 00 f7 e2 48 89 44 24 08 48 89 e7 be 00 00 00 00 b8 23 00 00 00 0f 05 <48> 8b 6c 24 10 48 83 c4 18 c3 cc cc cc cc cc cc cc cc cc b8 ba 00 [ 90.683272][ C1] RSP: 002b:000000c00004df18 EFLAGS: 00000202 ORIG_RAX: 0000000000000023 [ 90.691682][ C1] RAX: ffffffffffffffda RBX: 0000000000000014 RCX: 0000000000468a8d [ 90.699640][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000c00004df18 [ 90.709776][ C1] RBP: 000000c00004df28 R08: 0000000000017fc5 R09: 000000000000005a [ 90.717747][ C1] R10: 000000c00004deb8 R11: 0000000000000202 R12: 0000000000439470 [ 90.725704][ C1] R13: 0000000000000000 R14: 0000000000aba0e0 R15: 0000000000000000 [ 90.735201][ C1] Kernel Offset: disabled [ 90.739531][ C1] Rebooting in 86400 seconds..