INIT: Entering runlevel: 2 [info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added 'ci-upstream-kasan-gce-386-0,10.128.15.194' (ECDSA) to the list of known hosts. 2017/10/01 04:02:35 parsed 1 programs 2017/10/01 04:02:35 executed programs: 0 syzkaller login: [ 164.075029] watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor6:3008] [ 164.076187] Modules linked in: [ 164.076630] irq event stamp: 281182 [ 164.077146] hardirqs last enabled at (281181): [] restore_regs_and_iret+0x0/0x1d [ 164.078351] hardirqs last disabled at (281182): [] apic_timer_interrupt+0x98/0xb0 [ 164.079590] softirqs last enabled at (281180): [] __do_softirq+0x733/0xbb2 [ 164.080745] softirqs last disabled at (281173): [] irq_exit+0x1d3/0x210 [ 164.081867] CPU: 1 PID: 3008 Comm: syz-executor6 Not tainted 4.14.0-rc2+ #20 [ 164.082858] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 164.084096] task: ffff8801d32541c0 task.stack: ffff8801d3258000 [ 164.084900] RIP: 0010:validate_nla+0x42b/0x5a0 [ 164.085512] RSP: 0018:ffff8801d325eb10 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff10 [ 164.086541] RAX: 0000000000000003 RBX: ffffffff85485d60 RCX: 0000000000000002 [ 164.087498] RDX: 0000000000000000 RSI: 000000000000000a RDI: ffff8801d2c1cb96 [ 164.088473] RBP: ffff8801d325eb40 R08: ffffed003a77525b R09: ffff8801d3ba9280 [ 164.089429] R10: 000000000000000b R11: ffffed003a77525a R12: 0000000000000008 [ 164.090404] R13: ffff8801d2c1cb94 R14: 000000000000000c R15: 0000000000000008 [ 164.091364] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:00000000f7f91b40 [ 164.092454] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 164.093235] CR2: 0000000020689000 CR3: 00000001ce8d9000 CR4: 00000000001406e0 [ 164.094192] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 164.095172] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 164.102409] Call Trace: [ 164.104972] nla_parse+0x22e/0x3d0 [ 164.108491] ? nla_validate+0x1c0/0x1c0 [ 164.112448] tipc_nlmsg_parse+0xa7/0xe0 [ 164.116659] tipc_nl_publ_dump+0x7f4/0xef0 [ 164.120878] ? tipc_nl_sk_dump+0x1990/0x1990 [ 164.125267] ? mark_held_locks+0xb2/0x100 [ 164.129739] ? retint_kernel+0x10/0x10 [ 164.133599] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 164.138590] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 164.143324] ? retint_kernel+0x10/0x10 [ 164.147207] ? __sanitizer_cov_trace_pc+0x10/0x60 [ 164.152043] __tipc_nl_compat_dumpit.isra.10+0x20c/0xa10 [ 164.157480] ? __tipc_add_link_prop.isra.8+0x2d0/0x2d0 [ 164.162725] ? skb_put+0x149/0x1c0 [ 164.166240] ? skb_put+0x149/0x1c0 [ 164.169767] ? nla_put+0xf9/0x130 [ 164.173196] tipc_nl_compat_sk_dump+0x834/0xbb0 [ 164.177835] ? check_noncircular+0x20/0x20 [ 164.182054] ? __tipc_nl_compat_dumpit.isra.10+0xa10/0xa10 [ 164.187647] ? __alloc_skb+0x548/0x740 [ 164.191510] ? skb_copy_and_csum_dev+0x360/0x360 [ 164.196236] ? validate_nla+0x1a7/0x5a0 [ 164.200181] ? tipc_nl_sk_dump+0x1990/0x1990 [ 164.204561] ? tipc_tlv_sprintf+0x2d0/0x2d0 [ 164.208864] ? nla_validate+0x1c0/0x1c0 [ 164.212822] ? __tipc_nl_compat_dumpit.isra.10+0xa10/0xa10 [ 164.218418] __tipc_nl_compat_dumpit.isra.10+0x30d/0xa10 [ 164.223849] ? __tipc_add_link_prop.isra.8+0x2d0/0x2d0 [ 164.229105] ? __might_sleep+0x95/0x190 [ 164.233066] ? skb_put+0x149/0x1c0 [ 164.236581] tipc_nl_compat_dumpit+0x1d2/0x410 [ 164.241141] tipc_nl_compat_recv+0x419/0x18f0 [ 164.245609] ? tipc_nl_compat_doit+0x660/0x660 [ 164.250171] ? tipc_socket_stop+0x30/0x30 [ 164.254287] ? __tipc_nl_compat_dumpit.isra.10+0xa10/0xa10 [ 164.259889] ? find_held_lock+0x39/0x1d0 [ 164.263931] genl_family_rcv_msg+0x7b7/0xfc0 [ 164.268318] ? genl_rcv+0x40/0x40 [ 164.271745] ? netlink_getname+0x3c0/0x3c0 [ 164.275958] ? lock_release+0xd70/0xd70 [ 164.279903] ? netlink_lookup+0x620/0xa90 [ 164.284053] genl_rcv_msg+0xb2/0x140 [ 164.287748] netlink_rcv_skb+0x216/0x440 [ 164.291780] ? genl_family_rcv_msg+0xfc0/0xfc0 [ 164.296333] ? netlink_ack+0xab0/0xab0 [ 164.300189] ? genl_rcv+0x19/0x40 [ 164.303616] ? netlink_skb_destructor+0x1d0/0x1d0 [ 164.308430] ? selinux_nlmsg_lookup+0x32b/0x430 [ 164.313076] genl_rcv+0x28/0x40 [ 164.316328] netlink_unicast+0x4e8/0x6f0 [ 164.320366] ? netlink_attachskb+0x8a0/0x8a0 [ 164.324752] ? security_netlink_send+0x81/0xb0 [ 164.329308] netlink_sendmsg+0xa4a/0xe70 [ 164.333347] ? netlink_unicast+0x6f0/0x6f0 [ 164.337557] ? security_socket_sendmsg+0x89/0xb0 [ 164.342285] ? netlink_unicast+0x6f0/0x6f0 [ 164.346493] sock_sendmsg+0xca/0x110 [ 164.350183] sock_write_iter+0x320/0x5e0 [ 164.354217] ? sock_sendmsg+0x110/0x110 [ 164.358175] ? iov_iter_init+0xaf/0x1d0 [ 164.362128] __vfs_write+0x68a/0x970 [ 164.365817] ? kernel_read+0x120/0x120 [ 164.369672] ? selinux_capset+0x100/0x100 [ 164.373801] ? selinux_file_permission+0x82/0x460 [ 164.378624] ? rw_verify_area+0xe5/0x2b0 [ 164.382654] ? __fdget_raw+0x20/0x20 [ 164.386341] vfs_write+0x18f/0x510 [ 164.389857] SyS_write+0xef/0x220 [ 164.393281] ? exit_to_usermode_loop+0x198/0x310 [ 164.398015] ? SyS_read+0x220/0x220 [ 164.401619] ? lock_acquire+0x1d5/0x580 [ 164.405565] ? do_fast_syscall_32+0x158/0xf05 [ 164.410041] ? SyS_read+0x220/0x220 [ 164.413643] do_fast_syscall_32+0x3f2/0xf05 [ 164.417937] ? compat_start_thread+0x80/0x80 [ 164.422319] ? do_int80_syscall_32+0x940/0x940 [ 164.426876] ? lockdep_sys_exit+0x47/0xf0 [ 164.430998] ? syscall_return_slowpath+0x2b3/0x510 [ 164.435903] ? finish_task_switch+0x1aa/0x740 [ 164.440369] ? prepare_exit_to_usermode+0x2d0/0x2d0 [ 164.445358] ? sysret32_from_system_call+0x5/0x3b [ 164.450176] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 164.454998] entry_SYSENTER_compat+0x51/0x60 [ 164.459382] RIP: 0023:0xf7f95c79 [ 164.462715] RSP: 002b:00000000f7f9105c EFLAGS: 00000296 ORIG_RAX: 0000000000000004 [ 164.470395] RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 0000000020689000 [ 164.477636] RDX: 0000000000000020 RSI: 0000000000000000 RDI: 0000000000000000 [ 164.484877] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 164.492123] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 164.499362] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 164.506618] Code: b6 14 02 48 89 f8 83 e0 07 83 c0 01 38 d0 7c 09 84 d2 74 05 e8 c7 3e 5e ff 0f b7 5b 02 66 85 db 0f 85 ac fe ff ff e9 75 fd ff ff 70 80 29 ff 45 85 e4 0f 84 67 fd ff ff e8 62 80 29 ff 48 8d [ 164.525931] Kernel panic - not syncing: softlockup: hung tasks [ 164.531875] CPU: 1 PID: 3008 Comm: syz-executor6 Tainted: G L 4.14.0-rc2+ #20 [ 164.540246] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 164.549568] Call Trace: [ 164.552121] [ 164.554246] dump_stack+0x194/0x257 [ 164.557849] ? arch_local_irq_restore+0x53/0x53 [ 164.562496] ? vprintk_default+0x28/0x30 [ 164.566533] ? vprintk_func+0x5e/0xc0 [ 164.570311] panic+0x1e4/0x417 [ 164.573473] ? __warn+0x1d9/0x1d9 [ 164.576920] watchdog_timer_fn+0x401/0x410 [ 164.581127] ? watchdog_park_threads+0x240/0x240 [ 164.585866] __hrtimer_run_queues+0x349/0xe10 [ 164.590335] ? watchdog_park_threads+0x240/0x240 [ 164.595066] ? hrtimer_cancel+0x40/0x40 [ 164.599033] ? pvclock_read_flags+0x160/0x160 [ 164.603509] ? kvm_clock_get_cycles+0x25/0x30 [ 164.607978] ? ktime_get_update_offsets_now+0x34a/0x520 [ 164.613318] ? do_timer+0x50/0x50 [ 164.616744] ? native_apic_msr_write+0x5c/0x80 [ 164.621301] ? lapic_next_event+0x5a/0x90 [ 164.625431] ? clockevents_program_event+0x108/0x2e0 [ 164.630510] hrtimer_interrupt+0x1d4/0x5f0 [ 164.634734] smp_apic_timer_interrupt+0x156/0x710 [ 164.639544] ? smp_call_function_single_interrupt+0x130/0x650 [ 164.645399] ? smp_call_function_single_interrupt+0x650/0x650 [ 164.651255] ? _raw_spin_lock+0x32/0x40 [ 164.655203] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 164.660106] ? rcu_idle_enter+0xf0/0xf0 [ 164.664062] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 164.668880] apic_timer_interrupt+0x9d/0xb0 [ 164.673170] [ 164.675380] RIP: 0010:validate_nla+0x42b/0x5a0 [ 164.679927] RSP: 0018:ffff8801d325eb10 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff10 [ 164.687606] RAX: 0000000000000003 RBX: ffffffff85485d60 RCX: 0000000000000002 [ 164.694848] RDX: 0000000000000000 RSI: 000000000000000a RDI: ffff8801d2c1cb96 [ 164.702089] RBP: ffff8801d325eb40 R08: ffffed003a77525b R09: ffff8801d3ba9280 [ 164.709328] R10: 000000000000000b R11: ffffed003a77525a R12: 0000000000000008 [ 164.716569] R13: ffff8801d2c1cb94 R14: 000000000000000c R15: 0000000000000008 [ 164.723834] nla_parse+0x22e/0x3d0 [ 164.727348] ? nla_validate+0x1c0/0x1c0 [ 164.731305] tipc_nlmsg_parse+0xa7/0xe0 [ 164.735262] tipc_nl_publ_dump+0x7f4/0xef0 [ 164.739480] ? tipc_nl_sk_dump+0x1990/0x1990 [ 164.743867] ? mark_held_locks+0xb2/0x100 [ 164.747992] ? retint_kernel+0x10/0x10 [ 164.751856] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 164.756846] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 164.761579] ? retint_kernel+0x10/0x10 [ 164.765448] ? __sanitizer_cov_trace_pc+0x10/0x60 [ 164.770273] __tipc_nl_compat_dumpit.isra.10+0x20c/0xa10 [ 164.775704] ? __tipc_add_link_prop.isra.8+0x2d0/0x2d0 [ 164.780951] ? skb_put+0x149/0x1c0 [ 164.784472] ? skb_put+0x149/0x1c0 [ 164.787998] ? nla_put+0xf9/0x130 [ 164.791436] tipc_nl_compat_sk_dump+0x834/0xbb0 [ 164.796076] ? check_noncircular+0x20/0x20 [ 164.800287] ? __tipc_nl_compat_dumpit.isra.10+0xa10/0xa10 [ 164.805879] ? __alloc_skb+0x548/0x740 [ 164.809739] ? skb_copy_and_csum_dev+0x360/0x360 [ 164.814470] ? validate_nla+0x1a7/0x5a0 [ 164.818415] ? tipc_nl_sk_dump+0x1990/0x1990 [ 164.822790] ? tipc_tlv_sprintf+0x2d0/0x2d0 [ 164.827092] ? nla_validate+0x1c0/0x1c0 [ 164.831048] ? __tipc_nl_compat_dumpit.isra.10+0xa10/0xa10 [ 164.836642] __tipc_nl_compat_dumpit.isra.10+0x30d/0xa10 [ 164.842074] ? __tipc_add_link_prop.isra.8+0x2d0/0x2d0 [ 164.847327] ? __might_sleep+0x95/0x190 [ 164.851287] ? skb_put+0x149/0x1c0 [ 164.854803] tipc_nl_compat_dumpit+0x1d2/0x410 [ 164.859360] tipc_nl_compat_recv+0x419/0x18f0 [ 164.863833] ? tipc_nl_compat_doit+0x660/0x660 [ 164.868391] ? tipc_socket_stop+0x30/0x30 [ 164.872507] ? __tipc_nl_compat_dumpit.isra.10+0xa10/0xa10 [ 164.878109] ? find_held_lock+0x39/0x1d0 [ 164.882150] genl_family_rcv_msg+0x7b7/0xfc0 [ 164.886535] ? genl_rcv+0x40/0x40 [ 164.889963] ? netlink_getname+0x3c0/0x3c0 [ 164.894174] ? lock_release+0xd70/0xd70 [ 164.898119] ? netlink_lookup+0x620/0xa90 [ 164.902258] genl_rcv_msg+0xb2/0x140 [ 164.905945] netlink_rcv_skb+0x216/0x440 [ 164.909988] ? genl_family_rcv_msg+0xfc0/0xfc0 [ 164.914635] ? netlink_ack+0xab0/0xab0 [ 164.918491] ? genl_rcv+0x19/0x40 [ 164.921918] ? netlink_skb_destructor+0x1d0/0x1d0 [ 164.926738] ? selinux_nlmsg_lookup+0x32b/0x430 [ 164.931382] genl_rcv+0x28/0x40 [ 164.934633] netlink_unicast+0x4e8/0x6f0 [ 164.938672] ? netlink_attachskb+0x8a0/0x8a0 [ 164.943058] ? security_netlink_send+0x81/0xb0 [ 164.947614] netlink_sendmsg+0xa4a/0xe70 [ 164.951654] ? netlink_unicast+0x6f0/0x6f0 [ 164.955867] ? security_socket_sendmsg+0x89/0xb0 [ 164.960593] ? netlink_unicast+0x6f0/0x6f0 [ 164.964801] sock_sendmsg+0xca/0x110 [ 164.968488] sock_write_iter+0x320/0x5e0 [ 164.972524] ? sock_sendmsg+0x110/0x110 [ 164.976482] ? iov_iter_init+0xaf/0x1d0 [ 164.980431] __vfs_write+0x68a/0x970 [ 164.984121] ? kernel_read+0x120/0x120 [ 164.987980] ? selinux_capset+0x100/0x100 [ 164.992109] ? selinux_file_permission+0x82/0x460 [ 164.996941] ? rw_verify_area+0xe5/0x2b0 [ 165.000972] ? __fdget_raw+0x20/0x20 [ 165.004662] vfs_write+0x18f/0x510 [ 165.008190] SyS_write+0xef/0x220 [ 165.011618] ? exit_to_usermode_loop+0x198/0x310 [ 165.016348] ? SyS_read+0x220/0x220 [ 165.019954] ? lock_acquire+0x1d5/0x580 [ 165.023901] ? do_fast_syscall_32+0x158/0xf05 [ 165.028371] ? SyS_read+0x220/0x220 [ 165.031972] do_fast_syscall_32+0x3f2/0xf05 [ 165.036265] ? compat_start_thread+0x80/0x80 [ 165.040648] ? do_int80_syscall_32+0x940/0x940 [ 165.045206] ? lockdep_sys_exit+0x47/0xf0 [ 165.049325] ? syscall_return_slowpath+0x2b3/0x510 [ 165.054222] ? finish_task_switch+0x1aa/0x740 [ 165.058690] ? prepare_exit_to_usermode+0x2d0/0x2d0 [ 165.063678] ? sysret32_from_system_call+0x5/0x3b [ 165.068498] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 165.073319] entry_SYSENTER_compat+0x51/0x60