Warning: Permanently added '10.128.0.86' (ECDSA) to the list of known hosts. executing program [ 849.435302][ T8485] netlink: 32 bytes leftover after parsing attributes in process `syz-executor814'. [ 1008.131094][ T1648] INFO: task syz-executor814:8485 blocked for more than 143 seconds. [ 1008.139340][ T1648] Not tainted 5.11.0-rc6-syzkaller #0 [ 1008.147599][ T1648] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1008.157202][ T1648] task:syz-executor814 state:D stack:26104 pid: 8485 ppid: 8483 flags:0x00004004 [ 1008.167219][ T1648] Call Trace: [ 1008.170520][ T1648] __schedule+0x999/0xe70 [ 1008.176404][ T1648] schedule+0x14b/0x200 [ 1008.180588][ T1648] schedule_preempt_disabled+0xf/0x20 [ 1008.187460][ T1648] __mutex_lock_common+0x124f/0x2f00 [ 1008.194839][ T1648] ? tcf_action_init_1+0x4c2/0xa80 [ 1008.200147][ T1648] mutex_lock_nested+0x1a/0x20 [ 1008.206415][ T1648] tcf_action_init_1+0x4c2/0xa80 [ 1008.212419][ T1648] tcf_action_init+0x12f/0x4d0 [ 1008.217266][ T1648] tc_ctl_action+0x2c7/0x7d0 [ 1008.223786][ T1648] ? tcf_free_cookie_rcu+0x40/0x40 [ 1008.229369][ T1648] rtnetlink_rcv_msg+0x887/0xd60 [ 1008.236201][ T1648] ? rcu_read_lock_sched_held+0x41/0xb0 [ 1008.242696][ T1648] netlink_rcv_skb+0x190/0x3a0 [ 1008.247897][ T1648] ? rtnetlink_bind+0x80/0x80 [ 1008.253990][ T1648] netlink_unicast+0x786/0x940 [ 1008.258818][ T1648] netlink_sendmsg+0x9ae/0xd50 [ 1008.264989][ T1648] ? netlink_getsockopt+0xa50/0xa50 [ 1008.270221][ T1648] ____sys_sendmsg+0x519/0x800 [ 1008.277002][ T1648] ? import_iovec+0xe6/0x120 [ 1008.282666][ T1648] __sys_sendmsg+0x2bf/0x370 [ 1008.287411][ T1648] ? syscall_enter_from_user_mode+0x24/0x190 [ 1008.294928][ T1648] ? lockdep_hardirqs_on+0x8d/0x130 [ 1008.300165][ T1648] ? syscall_enter_from_user_mode+0x24/0x190 [ 1008.307553][ T1648] do_syscall_64+0x2d/0x70 [ 1008.312911][ T1648] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1008.318845][ T1648] RIP: 0033:0x446259 [ 1008.325277][ T1648] RSP: 002b:00007f4efff53318 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 1008.334678][ T1648] RAX: ffffffffffffffda RBX: 00000000004cb4e8 RCX: 0000000000446259 [ 1008.344265][ T1648] RDX: 0000000000000000 RSI: 0000000020002980 RDI: 0000000000000003 [ 1008.353343][ T1648] RBP: 00000000004cb4e0 R08: 0000000000000009 R09: 0000000000000000 [ 1008.362277][ T1648] R10: 0000000000000000 R11: 0000000000000246 R12: 6b72616d6e6e6f63 [ 1008.370536][ T1648] R13: 00007ffdad9cd19f R14: 00007f4efff53400 R15: 0000000000022000 [ 1008.381070][ T1648] [ 1008.381070][ T1648] Showing all locks held in the system: [ 1008.388920][ T1648] 3 locks held by kworker/1:0/19: [ 1008.395601][ T1648] #0: ffff888022612938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x6f4/0xfc0 [ 1008.408773][ T1648] #1: ffffc90000d97d78 ((addr_chk_work).work){+.+.}-{0:0}, at: process_one_work+0x733/0xfc0 [ 1008.419873][ T1648] #2: ffffffff8d6eeb88 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xa/0x20 [ 1008.430676][ T1648] 1 lock held by khungtaskd/1648: [ 1008.436537][ T1648] #0: ffffffff8c711740 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 [ 1008.446902][ T1648] 1 lock held by in:imklog/8131: [ 1008.453885][ T1648] #0: ffff888019740af0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x24e/0x2f0 [ 1008.464081][ T1648] 1 lock held by syz-executor814/8485: [ 1008.469556][ T1648] #0: ffffffff8d6eeb88 (rtnl_mutex){+.+.}-{3:3}, at: tcf_action_init_1+0x4c2/0xa80 [ 1008.480704][ T1648] 2 locks held by syz-executor814/8487: [ 1008.487388][ T1648] [ 1008.489756][ T1648] ============================================= [ 1008.489756][ T1648] [ 1008.499568][ T1648] NMI backtrace for cpu 0 [ 1008.504018][ T1648] CPU: 0 PID: 1648 Comm: khungtaskd Not tainted 5.11.0-rc6-syzkaller #0 [ 1008.512356][ T1648] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1008.522700][ T1648] Call Trace: [ 1008.525992][ T1648] dump_stack+0x137/0x1be [ 1008.530551][ T1648] ? nmi_cpu_backtrace+0x94/0x190 [ 1008.535596][ T1648] ? asan.module_dtor+0x20/0x20 [ 1008.540555][ T1648] nmi_cpu_backtrace+0x16c/0x190 [ 1008.545514][ T1648] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 1008.551593][ T1648] nmi_trigger_cpumask_backtrace+0x191/0x2f0 [ 1008.558198][ T1648] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 1008.564286][ T1648] watchdog+0xce9/0xd30 [ 1008.568567][ T1648] ? hungtask_pm_notify+0x50/0x50 [ 1008.573637][ T1648] kthread+0x39a/0x3c0 [ 1008.577813][ T1648] ? hungtask_pm_notify+0x50/0x50 [ 1008.582850][ T1648] ? kthread_blkcg+0xd0/0xd0 [ 1008.587454][ T1648] ret_from_fork+0x1f/0x30 [ 1008.593241][ T1648] Sending NMI from CPU 0 to CPUs 1: [ 1008.599112][ C1] NMI backtrace for cpu 1 [ 1008.599119][ C1] CPU: 1 PID: 8487 Comm: syz-executor814 Not tainted 5.11.0-rc6-syzkaller #0 [ 1008.599125][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1008.599131][ C1] RIP: 0010:preempt_count_sub+0x0/0x160 [ 1008.599137][ C1] Code: 25 ff ff ff 48 c7 c1 88 c8 b3 8d 80 e1 07 80 c1 03 38 c1 7c a4 48 c7 c7 88 c8 b3 8d e8 39 49 69 00 eb 96 0f 1f 80 00 00 00 00 <41> 56 53 89 fb 48 c7 c0 80 da f5 8f 48 c1 e8 03 49 be 00 00 00 00 [ 1008.599145][ C1] RSP: 0018:ffffc9000112f160 EFLAGS: 00000202 [ 1008.599155][ C1] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff894a43b6 [ 1008.599160][ C1] RDX: 0000000000000001 RSI: 0000000000000008 RDI: 0000000000000001 [ 1008.599165][ C1] RBP: dffffc0000000000 R08: dffffc0000000000 R09: ffffed100442d641 [ 1008.599170][ C1] R10: ffffed100442d641 R11: 0000000000000000 R12: ffff88802216b200 [ 1008.599175][ C1] R13: 1ffffffff1febb50 R14: 1ffffffff1b67911 R15: 0000000000000000 [ 1008.599180][ C1] FS: 00007f4efff32700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 1008.599185][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1008.599190][ C1] CR2: 00007f0a3715c000 CR3: 00000000197a2000 CR4: 00000000001506e0 [ 1008.599195][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1008.599200][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1008.599204][ C1] Call Trace: [ 1008.599207][ C1] __mutex_lock_common+0x536/0x2f00 [ 1008.599211][ C1] ? tcf_idr_check_alloc+0x9a/0x380 [ 1008.599215][ C1] ? tcf_idr_check_alloc+0xa4/0x380 [ 1008.599218][ C1] ? __mutex_unlock_slowpath+0x12d/0x520 [ 1008.599222][ C1] mutex_lock_nested+0x1a/0x20 [ 1008.599226][ C1] tcf_idr_check_alloc+0xa4/0x380 [ 1008.599230][ C1] tcf_connmark_init+0x165/0x7b0 [ 1008.599233][ C1] ? tcf_connmark_search+0x40/0x40 [ 1008.599237][ C1] tcf_action_init_1+0x7e8/0xa80 [ 1008.599240][ C1] ? __nla_parse+0x3c/0x50 [ 1008.599244][ C1] tcf_action_init+0x12f/0x4d0 [ 1008.599247][ C1] tc_ctl_action+0x2c7/0x7d0 [ 1008.599257][ C1] ? tcf_free_cookie_rcu+0x40/0x40 [ 1008.599261][ C1] rtnetlink_rcv_msg+0x887/0xd60 [ 1008.599265][ C1] ? rcu_read_lock_sched_held+0x41/0xb0 [ 1008.599269][ C1] netlink_rcv_skb+0x190/0x3a0 [ 1008.599272][ C1] ? rtnetlink_bind+0x80/0x80 [ 1008.599276][ C1] netlink_unicast+0x786/0x940 [ 1008.599279][ C1] netlink_sendmsg+0x9ae/0xd50 [ 1008.599283][ C1] ? netlink_getsockopt+0xa50/0xa50 [ 1008.599287][ C1] ____sys_sendmsg+0x519/0x800 [ 1008.599290][ C1] ? import_iovec+0xe6/0x120 [ 1008.599294][ C1] __sys_sendmsg+0x2bf/0x370 [ 1008.599297][ C1] ? rcu_lock_release+0x9/0x20 [ 1008.599301][ C1] ? syscall_enter_from_user_mode+0x24/0x190 [ 1008.599305][ C1] ? lockdep_hardirqs_on+0x8d/0x130 [ 1008.599309][ C1] ? syscall_enter_from_user_mode+0x24/0x190 [ 1008.599313][ C1] do_syscall_64+0x2d/0x70 [ 1008.599316][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1008.599320][ C1] RIP: 0033:0x446259 [ 1008.599326][ C1] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 00 00 90 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 1008.599334][ C1] RSP: 002b:00007f4efff32318 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 1008.599343][ C1] RAX: ffffffffffffffda RBX: 00000000004cb4f8 RCX: 0000000000446259 [ 1008.599348][ C1] RDX: 0000000000000000 RSI: 0000000020002980 RDI: 0000000000000004 [ 1008.599353][ C1] RBP: 00000000004cb4f0 R08: 0000000000000050 R09: 0000000000000000 [ 1008.599358][ C1] R10: 0000000000000008 R11: 0000000000000246 R12: 6b72616d6e6e6f63 [ 1008.599363][ C1] R13: 00007ffdad9cd19f R14: 00007f4efff32400 R15: 0000000000022000 [ 1008.600669][ T1648] Kernel panic - not syncing: hung_task: blocked tasks [ 1008.964864][ T1648] CPU: 0 PID: 1648 Comm: khungtaskd Not tainted 5.11.0-rc6-syzkaller #0 [ 1008.973196][ T1648] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1008.983254][ T1648] Call Trace: [ 1008.986554][ T1648] dump_stack+0x137/0x1be [ 1008.990893][ T1648] ? panic+0x1f3/0x800 [ 1008.995075][ T1648] panic+0x291/0x800 [ 1008.998977][ T1648] ? nmi_trigger_cpumask_backtrace+0x236/0x2f0 [ 1009.005147][ T1648] ? nmi_trigger_cpumask_backtrace+0x29b/0x2f0 [ 1009.011344][ T1648] ? nmi_trigger_cpumask_backtrace+0x236/0x2f0 [ 1009.017512][ T1648] ? nmi_trigger_cpumask_backtrace+0x2a0/0x2f0 [ 1009.023761][ T1648] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 1009.029850][ T1648] watchdog+0xd29/0xd30 [ 1009.034125][ T1648] ? hungtask_pm_notify+0x50/0x50 [ 1009.039159][ T1648] kthread+0x39a/0x3c0 [ 1009.043238][ T1648] ? hungtask_pm_notify+0x50/0x50 [ 1009.048273][ T1648] ? kthread_blkcg+0xd0/0xd0 [ 1009.052876][ T1648] ret_from_fork+0x1f/0x30 [ 1009.057920][ T1648] Kernel Offset: disabled [ 1009.062411][ T1648] Rebooting in 86400 seconds..