bond146 (unregistering): Released all slaves bond145 (unregistering): Released all slaves bond144 (unregistering): Released all slaves bond143 (unregistering): Released all slaves bond142 (unregistering): Released all slaves INFO: task kworker/1:0:19 blocked for more than 140 seconds. Not tainted 4.19.211-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. bond141 (unregistering): Released all slaves kworker/1:0 D24456 19 2 0x80000000 Workqueue: events switchdev_deferred_process_work bond140 (unregistering): Released all slaves Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 bond139 (unregistering): Released all slaves schedule+0x8d/0x1b0 kernel/sched/core.c:3561 bond138 (unregistering): Released all slaves schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619 __mutex_lock_common kernel/locking/mutex.c:1016 [inline] __mutex_lock+0x5f0/0x1190 kernel/locking/mutex.c:1078 bond137 (unregistering): Released all slaves bond136 (unregistering): Released all slaves switchdev_deferred_process_work+0xa/0x20 net/switchdev/switchdev.c:150 bond135 (unregistering): Released all slaves process_one_work+0x864/0x1570 kernel/workqueue.c:2153 bond134 (unregistering): Released all slaves worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 bond133 (unregistering): Released all slaves ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 INFO: task kworker/0:3:1689 blocked for more than 140 seconds. bond132 (unregistering): Released all slaves Not tainted 4.19.211-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. bond131 (unregistering): Released all slaves kworker/0:3 D26208 1689 2 0x80000000 bond130 (unregistering): Released all slaves Workqueue: ipv6_addrconf addrconf_dad_work Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 bond129 (unregistering): Released all slaves bond128 (unregistering): Released all slaves bond127 (unregistering): Released all slaves schedule+0x8d/0x1b0 kernel/sched/core.c:3561 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619 bond126 (unregistering): Released all slaves __mutex_lock_common kernel/locking/mutex.c:1016 [inline] __mutex_lock+0x5f0/0x1190 kernel/locking/mutex.c:1078 bond125 (unregistering): Released all slaves bond124 (unregistering): Released all slaves bond123 (unregistering): Released all slaves addrconf_dad_work+0x9c/0x10a0 net/ipv6/addrconf.c:3989 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 bond122 (unregistering): Released all slaves worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 bond121 (unregistering): Released all slaves bond120 (unregistering): Released all slaves ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 INFO: task kworker/1:3:12902 blocked for more than 140 seconds. bond119 (unregistering): Released all slaves Not tainted 4.19.211-syzkaller #0 bond118 (unregistering): Released all slaves "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. bond117 (unregistering): Released all slaves kworker/1:3 D27248 12902 2 0x80000000 bond116 (unregistering): Released all slaves Workqueue: events linkwatch_event bond115 (unregistering): Released all slaves Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 bond114 (unregistering): Released all slaves bond113 (unregistering): Released all slaves bond112 (unregistering): Released all slaves schedule+0x8d/0x1b0 kernel/sched/core.c:3561 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619 bond111 (unregistering): Released all slaves __mutex_lock_common kernel/locking/mutex.c:1016 [inline] __mutex_lock+0x5f0/0x1190 kernel/locking/mutex.c:1078 bond110 (unregistering): Released all slaves bond109 (unregistering): Released all slaves bond108 (unregistering): Released all slaves linkwatch_event+0xb/0x60 net/core/link_watch.c:236 bond107 (unregistering): Released all slaves process_one_work+0x864/0x1570 kernel/workqueue.c:2153 bond106 (unregistering): Released all slaves worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 bond105 (unregistering): Released all slaves kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 INFO: task kworker/1:2:910 blocked for more than 140 seconds. bond104 (unregistering): Released all slaves Not tainted 4.19.211-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/1:2 D27960 910 2 0x80000000 Workqueue: ipv6_addrconf addrconf_dad_work bond103 (unregistering): Released all slaves Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 bond102 (unregistering): Released all slaves schedule+0x8d/0x1b0 kernel/sched/core.c:3561 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619 __mutex_lock_common kernel/locking/mutex.c:1016 [inline] __mutex_lock+0x5f0/0x1190 kernel/locking/mutex.c:1078 bond101 (unregistering): Released all slaves bond100 (unregistering): Released all slaves bond99 (unregistering): Released all slaves addrconf_dad_work+0x9c/0x10a0 net/ipv6/addrconf.c:3989 bond98 (unregistering): Released all slaves process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 bond97 (unregistering): Released all slaves kthread+0x33f/0x460 kernel/kthread.c:259 bond96 (unregistering): Released all slaves ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 INFO: task syz-executor.4:1551 blocked for more than 140 seconds. Not tainted 4.19.211-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. bond95 (unregistering): Released all slaves syz-executor.4 D24616 1551 1 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 bond94 (unregistering): Released all slaves bond93 (unregistering): Released all slaves schedule+0x8d/0x1b0 kernel/sched/core.c:3561 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619 __mutex_lock_common kernel/locking/mutex.c:1016 [inline] __mutex_lock+0x5f0/0x1190 kernel/locking/mutex.c:1078 bond92 (unregistering): Released all slaves bond91 (unregistering): Released all slaves bond90 (unregistering): Released all slaves bond89 (unregistering): Released all slaves rtnl_lock net/core/rtnetlink.c:77 [inline] rtnetlink_rcv_msg+0x3fe/0xb80 net/core/rtnetlink.c:4779 bond88 (unregistering): Released all slaves bond87 (unregistering): Released all slaves netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2463 bond86 (unregistering): Released all slaves bond85 (unregistering): Released all slaves netlink_unicast_kernel net/netlink/af_netlink.c:1325 [inline] netlink_unicast+0x4d5/0x690 net/netlink/af_netlink.c:1351 bond84 (unregistering): Released all slaves bond83 (unregistering): Released all slaves netlink_sendmsg+0x6c3/0xc50 net/netlink/af_netlink.c:1917 bond82 (unregistering): Released all slaves bond81 (unregistering): Released all slaves sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0xc3/0x120 net/socket.c:661 __sys_sendto+0x21a/0x320 net/socket.c:1899 bond80 (unregistering): Released all slaves bond79 (unregistering): Released all slaves bond78 (unregistering): Released all slaves bond77 (unregistering): Released all slaves __do_sys_sendto net/socket.c:1911 [inline] __se_sys_sendto net/socket.c:1907 [inline] __x64_sys_sendto+0xdd/0x1b0 net/socket.c:1907 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 bond76 (unregistering): Released all slaves entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f79290e70fc Code: Bad RIP value. bond75 (unregistering): Released all slaves RSP: 002b:00007ffefdf23470 EFLAGS: 00000293 ORIG_RAX: 000000000000002c bond74 (unregistering): Released all slaves RAX: ffffffffffffffda RBX: 00007f7929d7d620 RCX: 00007f79290e70fc RDX: 000000000000002c RSI: 00007f7929d7d670 RDI: 0000000000000003 bond73 (unregistering): Released all slaves RBP: 0000000000000000 R08: 00007ffefdf234c4 R09: 000000000000000c bond72 (unregistering): Released all slaves R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 bond71 (unregistering): Released all slaves R13: 00007f7929d7d670 R14: 0000000000000003 R15: 0000000000000000 bond70 (unregistering): Released all slaves Showing all locks held in the system: 3 locks held by kworker/1:0/19: #0: 00000000173a382b ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 bond69 (unregistering): Released all slaves #1: 000000007117379e (deferred_process_work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 00000000c487054c (rtnl_mutex){+.+.}, at: switchdev_deferred_process_work+0xa/0x20 net/switchdev/switchdev.c:150 1 lock held by khungtaskd/1570: bond68 (unregistering): Released all slaves #0: 0000000022e0efb8 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 1 lock held by in:imklog/7794: bond67 (unregistering): Released all slaves #0: 000000004527ab77 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 5 locks held by kworker/u4:8/13351: bond66 (unregistering): Released all slaves 3 locks held by kworker/0:3/1689: #0: 00000000a5fb68b8 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 bond65 (unregistering): Released all slaves #1: 00000000bb9379ce ((work_completion)(&(&ifa->dad_work)->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 bond64 (unregistering): Released all slaves #2: 00000000c487054c (rtnl_mutex){+.+.}, at: addrconf_dad_work+0x9c/0x10a0 net/ipv6/addrconf.c:3989 3 locks held by kworker/1:3/12902: bond63 (unregistering): Released all slaves #0: 00000000173a382b ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 000000008daa8ba1 ((linkwatch_work).work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 bond62 (unregistering): Released all slaves #2: 00000000c487054c (rtnl_mutex){+.+.}, at: linkwatch_event+0xb/0x60 net/core/link_watch.c:236 bond61 (unregistering): Released all slaves 3 locks held by kworker/1:2/910: #0: 00000000a5fb68b8 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 bond60 (unregistering): Released all slaves #1: 0000000015c01430 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 bond59 (unregistering): Released all slaves #2: 00000000c487054c (rtnl_mutex){+.+.}, at: addrconf_dad_work+0x9c/0x10a0 net/ipv6/addrconf.c:3989 1 lock held by syz-executor.4/1551: bond58 (unregistering): Released all slaves #0: 00000000c487054c (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline] #0: 00000000c487054c (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 net/core/rtnetlink.c:4779 1 lock held by syz-executor.4/1788: bond57 (unregistering): Released all slaves #0: 00000000c487054c (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline] #0: 00000000c487054c (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 net/core/rtnetlink.c:4779 1 lock held by syz-executor.4/1802: bond56 (unregistering): Released all slaves #0: 00000000c487054c (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline] #0: 00000000c487054c (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 net/core/rtnetlink.c:4779 bond55 (unregistering): Released all slaves ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1570 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 bond54 (unregistering): Released all slaves Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline] watchdog+0x991/0xe60 kernel/hung_task.c:287 bond53 (unregistering): Released all slaves bond52 (unregistering): Released all slaves kthread+0x33f/0x460 kernel/kthread.c:259 bond51 (unregistering): Released all slaves ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Sending NMI from CPU 1 to CPUs 0: bond50 (unregistering): Released all slaves NMI backtrace for cpu 0 CPU: 0 PID: 13351 Comm: kworker/u4:8 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 Workqueue: netns cleanup_net RIP: 0010:check_kcov_mode kernel/kcov.c:67 [inline] RIP: 0010:write_comp_data+0x16/0x70 kernel/kcov.c:122 Code: 39 d0 76 07 48 89 34 d1 48 89 11 c3 0f 1f 84 00 00 00 00 00 49 89 f1 49 89 fa 65 48 8b 34 25 c0 df 01 00 65 8b 05 7a 59 9f 7e 00 01 1f 00 75 4f 8b 86 60 13 00 00 83 f8 03 75 44 48 8b 86 68 RSP: 0018:ffff88805246f228 EFLAGS: 00000086 RAX: 0000000080000002 RBX: 00000000fffffffe RCX: ffffffff87f0074e RDX: 0000000000000001 RSI: ffff88809adf6300 RDI: 0000000000000005 RBP: 0000000000000001 R08: 0000000000000009 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: ffffffff8d20232b R13: ffff88805246f2c9 R14: ffffffffffffffff R15: ffffffff8d202327 FS: 0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff212bdd000 CR3: 00000000aef91000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: number+0x73e/0xa90 lib/vsprintf.c:544 vsnprintf+0xf07/0x14f0 lib/vsprintf.c:2385 sprintf+0xc0/0x100 lib/vsprintf.c:2521 print_time kernel/printk/printk.c:1264 [inline] print_prefix+0x265/0x3f0 kernel/printk/printk.c:1287 msg_print_text+0xcd/0x1c0 kernel/printk/printk.c:1314 console_unlock+0x321/0x1110 kernel/printk/printk.c:2434 vprintk_emit+0x2d1/0x740 kernel/printk/printk.c:1965 vprintk_func+0x79/0x180 kernel/printk/printk_safe.c:405 printk+0xba/0xed kernel/printk/printk.c:2040 __netdev_printk.cold+0x5f/0xbe net/core/dev.c:9640 netdev_info+0xd8/0x110 net/core/dev.c:9687 bond_uninit+0x14e/0x420 drivers/net/bonding/bond_main.c:4408 rollback_registered_many+0x927/0xe70 net/core/dev.c:8210 unregister_netdevice_many.part.0+0x1a/0x300 net/core/dev.c:9324 unregister_netdevice_many net/core/dev.c:9323 [inline] default_device_exit_batch+0x2fa/0x3c0 net/core/dev.c:9795 ops_exit_list+0xf9/0x150 net/core/net_namespace.c:156 cleanup_net+0x3b4/0x8b0 net/core/net_namespace.c:554 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415