[ 72.446768][ T26] audit: type=1800 audit(1560025087.421:25): pid=8685 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 72.486430][ T26] audit: type=1800 audit(1560025087.421:26): pid=8685 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 72.526149][ T26] audit: type=1800 audit(1560025087.431:27): pid=8685 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] startpar: service(s) returned failure: ssh ...[?25l[?1c7[FAIL8[?25h[?0c failed! Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.18' (ECDSA) to the list of known hosts. syzkaller login: [ 753.435204][ T8860] IPVS: ftp: loaded support on port[0] = 21 [ 753.509096][ T8860] chnl_net:caif_netlink_parms(): no params data found [ 753.540306][ T8860] bridge0: port 1(bridge_slave_0) entered blocking state [ 753.548314][ T8860] bridge0: port 1(bridge_slave_0) entered disabled state [ 753.556411][ T8860] device bridge_slave_0 entered promiscuous mode [ 753.564946][ T8860] bridge0: port 2(bridge_slave_1) entered blocking state [ 753.572450][ T8860] bridge0: port 2(bridge_slave_1) entered disabled state [ 753.580440][ T8860] device bridge_slave_1 entered promiscuous mode [ 753.597989][ T8860] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 753.608037][ T8860] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 753.629329][ T8860] team0: Port device team_slave_0 added [ 753.637444][ T8860] team0: Port device team_slave_1 added [ 753.699202][ T8860] device hsr_slave_0 entered promiscuous mode [ 753.746746][ T8860] device hsr_slave_1 entered promiscuous mode [ 753.794861][ T8860] bridge0: port 2(bridge_slave_1) entered blocking state [ 753.802524][ T8860] bridge0: port 2(bridge_slave_1) entered forwarding state [ 753.811140][ T8860] bridge0: port 1(bridge_slave_0) entered blocking state [ 753.818470][ T8860] bridge0: port 1(bridge_slave_0) entered forwarding state [ 753.855431][ T8860] 8021q: adding VLAN 0 to HW filter on device bond0 [ 753.869649][ T8864] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 753.880605][ T8864] bridge0: port 1(bridge_slave_0) entered disabled state [ 753.889811][ T8864] bridge0: port 2(bridge_slave_1) entered disabled state [ 753.898568][ T8864] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 753.911749][ T8860] 8021q: adding VLAN 0 to HW filter on device team0 [ 753.922801][ T2939] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 753.931985][ T2939] bridge0: port 1(bridge_slave_0) entered blocking state [ 753.939583][ T2939] bridge0: port 1(bridge_slave_0) entered forwarding state [ 753.958255][ T8864] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 753.967451][ T8864] bridge0: port 2(bridge_slave_1) entered blocking state [ 753.974643][ T8864] bridge0: port 2(bridge_slave_1) entered forwarding state [ 753.983463][ T8864] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 753.994061][ T8864] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 754.004573][ T2939] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 754.023441][ T8860] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 754.034961][ T8860] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 754.049289][ T8865] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready executing program [ 754.058589][ T8865] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 754.067964][ T8865] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 754.085230][ T8860] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 907.536570][ T1043] INFO: task syz-executor243:8860 blocked for more than 143 seconds. [ 907.544845][ T1043] Not tainted 5.2.0-rc3+ #23 [ 907.552109][ T1043] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 907.561058][ T1043] syz-executor243 D24096 8860 8859 0x00000000 [ 907.568819][ T1043] Call Trace: [ 907.572314][ T1043] __schedule+0x7cb/0x1560 [ 907.576990][ T1043] ? __sched_text_start+0x8/0x8 [ 907.581864][ T1043] ? _raw_spin_unlock_irq+0x28/0x90 [ 907.588309][ T1043] ? _raw_spin_unlock_irq+0x28/0x90 [ 907.593614][ T1043] ? lockdep_hardirqs_on+0x418/0x5d0 [ 907.599197][ T1043] schedule+0xa8/0x260 [ 907.603385][ T1043] rwsem_down_read_failed+0x213/0x460 [ 907.610069][ T1043] ? rwsem_down_write_failed+0xc60/0xc60 [ 907.615767][ T1043] ? __do_page_fault+0x9e9/0xda0 [ 907.621059][ T1043] down_read+0xa5/0x1e0 [ 907.625336][ T1043] __do_page_fault+0x9e9/0xda0 [ 907.631403][ T1043] ? trace_hardirqs_off_caller+0x65/0x220 [ 907.637501][ T1043] do_page_fault+0x71/0x57d [ 907.642126][ T1043] ? page_fault+0x8/0x30 [ 907.647556][ T1043] page_fault+0x1e/0x30 [ 907.651755][ T1043] RIP: 0033:0x4aebf0 [ 907.655692][ T1043] Code: Bad RIP value. [ 907.660048][ T1043] RSP: 002b:00007fffc96b6fd8 EFLAGS: 00010206 [ 907.666159][ T1043] RAX: 00000000004aebf0 RBX: 0000000000000001 RCX: 00000000006e47b0 [ 907.675411][ T1043] RDX: 0000000000409ec0 RSI: 0000000000000001 RDI: 00000000004d0510 [ 907.684688][ T1043] RBP: 00007fffc96b6fe0 R08: 00007fffc96b74d9 R09: 00007fffc96b74d9 [ 907.693920][ T1043] R10: 00007fffc96b7060 R11: 0000000000000000 R12: 0000000000000001 [ 907.702323][ T1043] R13: 00000000006e47a0 R14: 000000000000002d R15: 0000000000000007 [ 907.711584][ T1043] [ 907.711584][ T1043] Showing all locks held in the system: [ 907.719668][ T1043] 1 lock held by khungtaskd/1043: [ 907.724792][ T1043] #0: 0000000081bddb8c (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e [ 907.735515][ T1043] 1 lock held by rsyslogd/8723: [ 907.740657][ T1043] #0: 00000000508deb1e (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 [ 907.750712][ T1043] 2 locks held by getty/8835: [ 907.755404][ T1043] #0: 000000003797730f (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 907.764936][ T1043] #1: 00000000d9eae8ff (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 907.775798][ T1043] 2 locks held by getty/8836: [ 907.780743][ T1043] #0: 000000006859be97 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 907.790933][ T1043] #1: 00000000679200e4 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 907.800789][ T1043] 2 locks held by getty/8837: [ 907.805573][ T1043] #0: 00000000ba8a62e4 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 907.816687][ T1043] #1: 0000000047ce23ad (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 907.827653][ T1043] 2 locks held by getty/8838: [ 907.832573][ T1043] #0: 0000000097efaad4 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 907.841823][ T1043] #1: 000000006b1d8d65 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 907.852631][ T1043] 2 locks held by getty/8839: [ 907.857563][ T1043] #0: 0000000006bf5b57 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 907.867742][ T1043] #1: 00000000d91d1547 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 907.877674][ T1043] 2 locks held by getty/8840: [ 907.882369][ T1043] #0: 00000000a215cbd7 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 907.892785][ T1043] #1: 0000000026b56cef (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 907.902678][ T1043] 2 locks held by getty/8841: [ 907.908576][ T1043] #0: 0000000039b777ca (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 907.917989][ T1043] #1: 00000000f6be7a8f (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 907.928810][ T1043] 1 lock held by syz-executor243/8860: [ 907.934308][ T1043] #0: 00000000e5481b08 (&mm->mmap_sem#2){++++}, at: __do_page_fault+0x9e9/0xda0 [ 907.943854][ T1043] 2 locks held by syz-executor243/8872: [ 907.951502][ T1043] [ 907.953873][ T1043] ============================================= [ 907.953873][ T1043] [ 907.962700][ T1043] NMI backtrace for cpu 1 [ 907.967187][ T1043] CPU: 1 PID: 1043 Comm: khungtaskd Not tainted 5.2.0-rc3+ #23 [ 907.974925][ T1043] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 907.984997][ T1043] Call Trace: [ 907.988321][ T1043] dump_stack+0x172/0x1f0 [ 907.992686][ T1043] nmi_cpu_backtrace.cold+0x63/0xa4 [ 907.997948][ T1043] ? lapic_can_unplug_cpu.cold+0x38/0x38 [ 908.003626][ T1043] nmi_trigger_cpumask_backtrace+0x1be/0x236 [ 908.009644][ T1043] arch_trigger_cpumask_backtrace+0x14/0x20 [ 908.015585][ T1043] watchdog+0x9b7/0xec0 [ 908.019799][ T1043] kthread+0x354/0x420 [ 908.023927][ T1043] ? reset_hung_task_detector+0x30/0x30 [ 908.029679][ T1043] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 908.035960][ T1043] ret_from_fork+0x24/0x30 [ 908.040541][ T1043] Sending NMI from CPU 1 to CPUs 0: [ 908.046633][ C0] NMI backtrace for cpu 0 [ 908.046641][ C0] CPU: 0 PID: 8872 Comm: syz-executor243 Not tainted 5.2.0-rc3+ #23 [ 908.046647][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 908.046660][ C0] RIP: 0010:__mutex_lock+0x369/0x1310 [ 908.046672][ C0] Code: 00 4c 89 ef e8 c8 44 8d fa 4d 09 f4 48 89 d8 f0 4d 0f b1 65 00 48 39 c3 74 5e 48 89 c3 eb 99 41 0f b6 0c 24 48 89 d0 83 e0 07 <83> c0 03 38 c8 7c 08 84 c9 0f 85 f5 0b 00 00 8b 35 c2 d2 49 03 85 [ 908.046677][ C0] RSP: 0018:ffff88808bdc7910 EFLAGS: 00000246 [ 908.046685][ C0] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000004 [ 908.046690][ C0] RDX: ffffffff8a65ad40 RSI: 0000000000000008 RDI: ffffffff8187fab6 [ 908.046700][ C0] RBP: ffff88808bdc7a80 R08: 1ffff1101357e8e6 R09: ffffed101357e8e7 [ 908.046706][ C0] R10: ffffed101357e8e6 R11: ffff88809abf4737 R12: fffffbfff14cb5a8 [ 908.046711][ C0] R13: ffff88809abf4730 R14: ffff8880904ba240 R15: 0000000000000000 [ 908.046717][ C0] FS: 00007f1e313e0700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 908.046722][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 908.046727][ C0] CR2: ffffffffff600400 CR3: 00000000a3894000 CR4: 00000000001406f0 [ 908.046733][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 908.046738][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 908.046741][ C0] Call Trace: [ 908.046745][ C0] ? perf_mmap+0x746/0x17f0 [ 908.046748][ C0] ? lock_downgrade+0x880/0x880 [ 908.046752][ C0] ? mutex_trylock+0x1e0/0x1e0 [ 908.046756][ C0] ? check_memory_region+0x1f/0x190 [ 908.046760][ C0] ? kasan_check_write+0x14/0x20 [ 908.046764][ C0] ? __mutex_unlock_slowpath+0xf8/0x6b0 [ 908.046768][ C0] ? wait_for_completion+0x440/0x440 [ 908.046771][ C0] ? perf_mmap+0x746/0x17f0 [ 908.046775][ C0] mutex_lock_nested+0x16/0x20 [ 908.046778][ C0] ? mutex_lock_nested+0x16/0x20 [ 908.046782][ C0] perf_mmap+0x746/0x17f0 [ 908.046786][ C0] ? perf_release+0x50/0x50 [ 908.046789][ C0] ? memset+0x32/0x40 [ 908.046792][ C0] mmap_region+0xc35/0x1760 [ 908.046796][ C0] ? __x64_sys_brk+0x760/0x760 [ 908.046801][ C0] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 908.046804][ C0] ? get_unmapped_area+0x293/0x3b0 [ 908.046808][ C0] do_mmap+0x8e2/0x1080 [ 908.046811][ C0] vm_mmap_pgoff+0x1c5/0x230 [ 908.046815][ C0] ? vma_is_stack_for_current+0xd0/0xd0 [ 908.046819][ C0] ? ksys_dup3+0x3e0/0x3e0 [ 908.046823][ C0] ksys_mmap_pgoff+0x4aa/0x630 [ 908.046827][ C0] ? find_mergeable_anon_vma+0x2e0/0x2e0 [ 908.046831][ C0] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 908.046835][ C0] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 908.046838][ C0] ? do_syscall_64+0x26/0x680 [ 908.046843][ C0] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 908.046846][ C0] __x64_sys_mmap+0xe9/0x1b0 [ 908.046850][ C0] do_syscall_64+0xfd/0x680 [ 908.046854][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 908.046857][ C0] RIP: 0033:0x448d29 [ 908.046869][ C0] Code: e8 7c 1a 03 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b 0c fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 908.046873][ C0] RSP: 002b:00007f1e313dfcd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 [ 908.046882][ C0] RAX: ffffffffffffffda RBX: 00000000006dfc48 RCX: 0000000000448d29 [ 908.046888][ C0] RDX: 0000000000000000 RSI: 0000000000001000 RDI: 0000000020fff000 [ 908.046893][ C0] RBP: 00000000006dfc40 R08: 0000000000000003 R09: 0000000000000000 [ 908.046898][ C0] R10: 0002000000001011 R11: 0000000000000246 R12: 00000000006dfc4c [ 908.046904][ C0] R13: 00007fffc96b6fbf R14: 00007f1e313e09c0 R15: 0000000000000000 [ 908.048893][ T1043] Kernel panic - not syncing: hung_task: blocked tasks [ 908.417019][ T1043] CPU: 1 PID: 1043 Comm: khungtaskd Not tainted 5.2.0-rc3+ #23 [ 908.424570][ T1043] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 908.434816][ T1043] Call Trace: [ 908.438132][ T1043] dump_stack+0x172/0x1f0 [ 908.442590][ T1043] panic+0x2cb/0x744 [ 908.446495][ T1043] ? __warn_printk+0xf3/0xf3 [ 908.451185][ T1043] ? lapic_can_unplug_cpu.cold+0x38/0x38 [ 908.456835][ T1043] ? ___preempt_schedule+0x16/0x18 [ 908.462013][ T1043] ? nmi_trigger_cpumask_backtrace+0x19e/0x236 [ 908.468209][ T1043] ? nmi_trigger_cpumask_backtrace+0x1fa/0x236 [ 908.474380][ T1043] ? nmi_trigger_cpumask_backtrace+0x204/0x236 [ 908.480730][ T1043] ? nmi_trigger_cpumask_backtrace+0x19e/0x236 [ 908.486907][ T1043] watchdog+0x9c8/0xec0 [ 908.491099][ T1043] kthread+0x354/0x420 [ 908.495186][ T1043] ? reset_hung_task_detector+0x30/0x30 [ 908.500742][ T1043] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 908.507010][ T1043] ret_from_fork+0x24/0x30 [ 908.513351][ T1043] Kernel Offset: disabled [ 908.517800][ T1043] Rebooting in 86400 seconds..