Warning: Permanently added '10.128.0.216' (ECDSA) to the list of known hosts. 2020/06/04 01:13:51 fuzzer started 2020/06/04 01:13:52 dialing manager at 10.128.0.105:35977 2020/06/04 01:13:52 syscalls: 3055 2020/06/04 01:13:52 code coverage: enabled 2020/06/04 01:13:52 comparison tracing: enabled 2020/06/04 01:13:52 extra coverage: enabled 2020/06/04 01:13:52 setuid sandbox: enabled 2020/06/04 01:13:52 namespace sandbox: enabled 2020/06/04 01:13:52 Android sandbox: /sys/fs/selinux/policy does not exist 2020/06/04 01:13:52 fault injection: enabled 2020/06/04 01:13:52 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/06/04 01:13:52 net packet injection: enabled 2020/06/04 01:13:52 net device setup: enabled 2020/06/04 01:13:52 concurrency sanitizer: enabled 2020/06/04 01:13:52 devlink PCI setup: PCI device 0000:00:10.0 is not available 2020/06/04 01:13:52 USB emulation: enabled 2020/06/04 01:13:52 adding functions to KCSAN blacklist: 'pcpu_alloc' 'ep_poll' 'find_get_pages_range_tag' 'generic_fillattr' 'generic_file_read_iter' '__ext4_new_inode' 'futex_wait_queue_me' 'run_timer_softirq' 'ext4_free_inodes_count' 'tick_sched_do_timer' 'page_counter_charge' 'complete_signal' 'alloc_pid' [ 59.539140][ T8919] ================================================================== [ 59.547265][ T8919] BUG: KCSAN: data-race in mod_timer / timer_clear_idle [ 59.554204][ T8919] [ 59.556539][ T8919] write to 0xffff88812c11dca4 of 1 bytes by task 0 on cpu 1: [ 59.563899][ T8919] timer_clear_idle+0x3d/0x50 [ 59.568553][ T8919] __tick_nohz_idle_restart_tick+0x32/0x1a0 [ 59.574426][ T8919] tick_nohz_idle_exit+0x19c/0x1d0 [ 59.579516][ T8919] do_idle+0xac/0x290 [ 59.583473][ T8919] cpu_startup_entry+0x14/0x20 [ 59.588384][ T8919] start_secondary+0x169/0x1b0 [ 59.593123][ T8919] secondary_startup_64+0xa4/0xb0 [ 59.598114][ T8919] [ 59.600423][ T8919] read to 0xffff88812c11dca4 of 1 bytes by task 8919 on cpu 0: [ 59.607958][ T8919] mod_timer+0x631/0x830 [ 59.612194][ T8919] sk_reset_timer+0x29/0xc0 [ 59.616688][ T8919] tcp_rearm_rto+0x1ce/0x280 [ 59.621257][ T8919] tcp_event_new_data_sent+0x23f/0x260 [ 59.626693][ T8919] tcp_write_xmit+0x5c6/0x31e0 [ 59.631459][ T8919] __tcp_push_pending_frames+0x72/0x1b0 [ 59.636976][ T8919] tcp_push+0x1ec/0x3e0 [ 59.641991][ T8919] tcp_sendmsg_locked+0x1de3/0x20f0 [ 59.647178][ T8919] tcp_sendmsg+0x35/0x50 [ 59.651570][ T8919] inet_sendmsg+0x69/0x90 [ 59.655876][ T8919] sock_sendmsg+0x98/0xc0 [ 59.660198][ T8919] sock_write_iter+0x186/0x240 [ 59.664952][ T8919] new_sync_write+0x303/0x400 [ 59.669617][ T8919] __vfs_write+0x9e/0xb0 [ 59.673856][ T8919] vfs_write+0x189/0x380 [ 59.678070][ T8919] ksys_write+0x16a/0x1a0 [ 59.682397][ T8919] __x64_sys_write+0x49/0x60 [ 59.689046][ T8919] do_syscall_64+0xc7/0x3b0 [ 59.693525][ T8919] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 59.699403][ T8919] [ 59.701703][ T8919] Reported by Kernel Concurrency Sanitizer on: [ 59.707832][ T8919] CPU: 0 PID: 8919 Comm: syz-fuzzer Not tainted 5.7.0-rc1-syzkaller #0 [ 59.716215][ T8919] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.728339][ T8919] ================================================================== [ 59.736746][ T8919] Kernel panic - not syncing: panic_on_warn set ... [ 59.743345][ T8919] CPU: 0 PID: 8919 Comm: syz-fuzzer Not tainted 5.7.0-rc1-syzkaller #0 [ 59.751612][ T8919] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.761667][ T8919] Call Trace: [ 59.764945][ T8919] dump_stack+0x11d/0x187 [ 59.769260][ T8919] panic+0x210/0x640 [ 59.773233][ T8919] ? vprintk_func+0x89/0x13a [ 59.777804][ T8919] kcsan_report.cold+0xc/0x1a [ 59.782469][ T8919] kcsan_setup_watchpoint+0x3fb/0x440 [ 59.787837][ T8919] mod_timer+0x631/0x830 [ 59.792064][ T8919] sk_reset_timer+0x29/0xc0 [ 59.796553][ T8919] tcp_rearm_rto+0x1ce/0x280 [ 59.801389][ T8919] tcp_event_new_data_sent+0x23f/0x260 [ 59.806840][ T8919] tcp_write_xmit+0x5c6/0x31e0 [ 59.811612][ T8919] ? iov_iter_advance+0x21c/0x900 [ 59.816618][ T8919] __tcp_push_pending_frames+0x72/0x1b0 [ 59.822139][ T8919] tcp_push+0x1ec/0x3e0 [ 59.826709][ T8919] tcp_sendmsg_locked+0x1de3/0x20f0 [ 59.831977][ T8919] ? aa_label_sk_perm.part.0+0x220/0x290 [ 59.837608][ T8919] tcp_sendmsg+0x35/0x50 [ 59.841851][ T8919] inet_sendmsg+0x69/0x90 [ 59.846156][ T8919] ? inet_send_prepare+0x1f0/0x1f0 [ 59.851342][ T8919] sock_sendmsg+0x98/0xc0 [ 59.856171][ T8919] sock_write_iter+0x186/0x240 [ 59.861018][ T8919] new_sync_write+0x303/0x400 [ 59.865693][ T8919] __vfs_write+0x9e/0xb0 [ 59.869914][ T8919] vfs_write+0x189/0x380 [ 59.874228][ T8919] ksys_write+0x16a/0x1a0 [ 59.878549][ T8919] __x64_sys_write+0x49/0x60 [ 59.883119][ T8919] do_syscall_64+0xc7/0x3b0 [ 59.887788][ T8919] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 59.893681][ T8919] RIP: 0033:0x4b3cdb [ 59.897653][ T8919] Code: ff e9 69 ff ff ff cc cc cc cc cc cc cc cc cc e8 bb a1 f8 ff 48 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 28 ff ff ff ff 48 c7 44 24 30 [ 59.917251][ T8919] RSP: 002b:000000c0001db540 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 [ 59.925729][ T8919] RAX: ffffffffffffffda RBX: 000000c00002c000 RCX: 00000000004b3cdb [ 59.933759][ T8919] RDX: 0000000000000007 RSI: 000000c000266020 RDI: 0000000000000006 [ 59.941730][ T8919] RBP: 000000c0001db590 R08: 000000c000266001 R09: 0000000000000007 [ 59.949680][ T8919] R10: 000000c000112000 R11: 0000000000000202 R12: 000000000000011e [ 59.957643][ T8919] R13: 000000c0001ae000 R14: 0000000000000007 R15: 00000000000005c0 [ 61.042386][ T8919] Shutting down cpus with NMI [ 61.048680][ T8919] Kernel Offset: disabled [ 61.053015][ T8919] Rebooting in 86400 seconds..