Warning: Permanently added '10.128.0.218' (ECDSA) to the list of known hosts.
2020/06/30 12:02:25 fuzzer started
2020/06/30 12:02:26 dialing manager at 10.128.0.105:42491
2020/06/30 12:02:28 syscalls: 3106
2020/06/30 12:02:28 code coverage: enabled
2020/06/30 12:02:28 comparison tracing: enabled
2020/06/30 12:02:28 extra coverage: enabled
2020/06/30 12:02:28 setuid sandbox: enabled
2020/06/30 12:02:28 namespace sandbox: enabled
2020/06/30 12:02:28 Android sandbox: /sys/fs/selinux/policy does not exist
2020/06/30 12:02:28 fault injection: enabled
2020/06/30 12:02:28 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/06/30 12:02:28 net packet injection: enabled
2020/06/30 12:02:28 net device setup: enabled
2020/06/30 12:02:28 concurrency sanitizer: enabled
2020/06/30 12:02:28 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/06/30 12:02:28 USB emulation: enabled
2020/06/30 12:02:30 suppressing KCSAN reports in functions: 'ext4_mark_iloc_dirty' '__xa_clear_mark' 'find_get_pages_range_tag' 'alloc_pid' 'ext4_free_inodes_count' 'page_counter_charge' 'ext4_writepages' 'snd_rawmidi_transmit' 'iptunnel_xmit' 'blk_mq_rq_ctx_init' '__ext4_new_inode' 'pcpu_alloc' 'do_nanosleep' 'ext4_free_inode' 'futex_wait_queue_me' 'do_epoll_wait' 
12:02:54 executing program 0:
perf_event_open(&(0x7f0000000040)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x50d, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_config_ext}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet(0x2, 0x4000000000000001, 0x0)
setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f00000000c0)=0x2000000000000074, 0x25d)
bind$inet(r0, &(0x7f0000000280)={0x2, 0x4e23, @multicast1}, 0x10)
perf_event_open(&(0x7f0000000580)={0x2, 0x70, 0x7e, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x400000, 0x4, @perf_bp={0x0}, 0x0, 0x8, 0x0, 0x1}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x8)
getdents64(0xffffffffffffffff, 0x0, 0x0)
sendto$inet(r0, 0x0, 0x0, 0x220007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10)
recvmmsg(r0, &(0x7f0000005540)=[{{0x0, 0x28000000, &(0x7f0000000240)=[{&(0x7f0000001340)=""/4067, 0x20002323}], 0x1, 0x0, 0x983a0000, 0x103}}], 0x1, 0x100, 0x0)
setsockopt$sock_int(r0, 0x1, 0x8, &(0x7f0000000600), 0x4)
setsockopt$inet6_MRT6_ADD_MIF(0xffffffffffffffff, 0x29, 0xca, &(0x7f0000000180)={0x0, 0x0, 0x0, 0x20}, 0xc)
rt_sigaction(0x1f, &(0x7f00000001c0)={&(0x7f0000000140)="f2ab40de9200c00000f30fa7c0f28d07f24c0f2d47d6c4e2b3f710f3f3406804000000430f0f47998e66f3430f1efe8f4978c1c7", 0x0, 0x0, {[0x1000]}}, &(0x7f0000000340)={0x0, 0x0, 0x0}, 0x8, &(0x7f0000000380))
sendto$inet(r0, &(0x7f00000012c0)="0c268a927f1f6588b967480a41ba7860f46ef65ac618ded8974895abeaf4b4834ff922b3f1e0b02bd67aa03059bcecc7a95c25a3a07e758044ab4ea6f7ae55d88fecf90b1a7511bf746bec66ba", 0xfe6a, 0x11, 0x0, 0x170)

syzkaller login: [   59.841981][ T8676] IPVS: ftp: loaded support on port[0] = 21
[   59.889573][   T24] ==================================================================
[   59.897694][   T24] BUG: KCSAN: data-race in copy_process / release_task
[   59.904526][   T24] 
[   59.906843][   T24] write to 0xffffffff8927a410 of 4 bytes by task 8748 on cpu 1:
[   59.914500][   T24]  release_task+0x6c8/0xb90
[   59.919600][   T24]  do_exit+0x1140/0x16e0
[   59.923924][   T24]  call_usermodehelper_exec_async+0x2da/0x2e0
[   59.930090][   T24]  ret_from_fork+0x1f/0x30
[   59.934673][   T24] 
[   59.937176][   T24] read to 0xffffffff8927a410 of 4 bytes by task 24 on cpu 0:
[   59.944824][   T24]  copy_process+0xac4/0x3300
[   59.949414][   T24]  _do_fork+0xf1/0x660
[   59.953471][   T24]  kernel_thread+0x85/0xb0
[   59.957883][   T24]  call_usermodehelper_exec_work+0x4f/0x1b0
[   59.963765][   T24]  process_one_work+0x3e1/0x9a0
[   59.968609][   T24]  worker_thread+0x665/0xbe0
[   59.973189][   T24]  kthread+0x20d/0x230
[   59.977243][   T24]  ret_from_fork+0x1f/0x30
[   59.982987][   T24] 
[   59.985308][   T24] Reported by Kernel Concurrency Sanitizer on:
[   59.991452][   T24] CPU: 0 PID: 24 Comm: kworker/u4:2 Not tainted 5.8.0-rc3-syzkaller #0
[   59.999667][   T24] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   60.009722][   T24] Workqueue: events_unbound call_usermodehelper_exec_work
[   60.016904][   T24] ==================================================================
[   60.025478][   T24] Kernel panic - not syncing: panic_on_warn set ...
[   60.032080][   T24] CPU: 0 PID: 24 Comm: kworker/u4:2 Not tainted 5.8.0-rc3-syzkaller #0
[   60.040297][   T24] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   60.050622][   T24] Workqueue: events_unbound call_usermodehelper_exec_work
[   60.051273][ T8676] chnl_net:caif_netlink_parms(): no params data found
[   60.057723][   T24] Call Trace:
[   60.057737][   T24]  dump_stack+0x10f/0x19d
[   60.057752][   T24]  panic+0x207/0x64a
[   60.076372][   T24]  ? vprintk_emit+0x44a/0x4f0
[   60.081126][   T24]  kcsan_report+0x684/0x690
12:02:55 executing program 1:
prlimit64(0x0, 0xe, &(0x7f0000000280)={0x9, 0x1ff}, 0x0)
sched_setattr(0x0, &(0x7f0000000080)={0x30, 0x2, 0x0, 0x0, 0x3}, 0x0)
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x20, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x3, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_config_ext}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x2)
r0 = open(&(0x7f0000000000)='./bus\x00', 0x141042, 0x0)
mmap(&(0x7f0000003000/0x2000)=nil, 0x2000, 0x0, 0x1012, r0, 0x0)
write$P9_RWALK(r0, &(0x7f00000003c0)=ANY=[@ANYRES64], 0x8)
r1 = perf_event_open(&(0x7f0000000180)={0x6, 0x70, 0x0, 0x0, 0x0, 0x0, 0xfffffff6}, 0x0, 0x0, 0xffffffffffffffff, 0x0)
dup2(r0, r1)
clock_gettime(0x0, 0x0)
seccomp$SECCOMP_GET_ACTION_AVAIL(0x2, 0x0, &(0x7f0000000100)=0x3)
dup3(0xffffffffffffffff, 0xffffffffffffffff, 0x0)
ioctl$sock_SIOCGIFINDEX(0xffffffffffffffff, 0x8933, &(0x7f0000000140)={'virt_wifi0\x00'})
syz_genetlink_get_family_id$nl80211(&(0x7f00000000c0)='nl80211\x00')
sendmsg$NL80211_CMD_REQ_SET_REG(0xffffffffffffffff, 0x0, 0x0)

[   60.085629][   T24]  ? kcsan_setup_watchpoint+0x453/0x4d0
[   60.091253][   T24]  ? copy_process+0xac4/0x3300
[   60.096000][   T24]  ? _do_fork+0xf1/0x660
[   60.100227][   T24]  ? kernel_thread+0x85/0xb0
[   60.105492][   T24]  ? call_usermodehelper_exec_work+0x4f/0x1b0
[   60.111554][   T24]  ? process_one_work+0x3e1/0x9a0
[   60.116576][   T24]  ? worker_thread+0x665/0xbe0
[   60.121331][   T24]  ? kthread+0x20d/0x230
[   60.125555][   T24]  ? ret_from_fork+0x1f/0x30
[   60.130156][   T24]  ? debug_smp_processor_id+0x18/0x20
[   60.135696][   T24]  ? copy_creds+0x280/0x350
[   60.140188][   T24]  ? copy_creds+0x280/0x350
[   60.145335][   T24]  kcsan_setup_watchpoint+0x453/0x4d0
[   60.150701][   T24]  ? copy_creds+0x280/0x350
[   60.155221][   T24]  copy_process+0xac4/0x3300
[   60.159897][   T24]  ? check_preempt_wakeup+0x1cb/0x370
[   60.165258][   T24]  ? proc_cap_handler+0x280/0x280
[   60.170273][   T24]  _do_fork+0xf1/0x660
[   60.174329][   T24]  ? proc_cap_handler+0x280/0x280
[   60.179341][   T24]  kernel_thread+0x85/0xb0
[   60.183748][   T24]  ? proc_cap_handler+0x280/0x280
[   60.188768][   T24]  call_usermodehelper_exec_work+0x4f/0x1b0
[   60.195383][   T24]  ? __list_del_entry_valid+0x54/0xc0
[   60.201082][   T24]  process_one_work+0x3e1/0x9a0
[   60.206181][   T24]  worker_thread+0x665/0xbe0
[   60.210958][   T24]  ? finish_task_switch+0x8b/0x270
[   60.216144][   T24]  ? process_one_work+0x9a0/0x9a0
[   60.221152][   T24]  kthread+0x20d/0x230
[   60.225210][   T24]  ? process_one_work+0x9a0/0x9a0
[   60.230223][   T24]  ? kthread_blkcg+0x80/0x80
[   60.234994][   T24]  ret_from_fork+0x1f/0x30
[   60.241508][   T24] Kernel Offset: disabled
[   60.245923][   T24] Rebooting in 86400 seconds..