bond983 (unregistering): Released all slaves bond982 (unregistering): Released all slaves bond981 (unregistering): Released all slaves bond980 (unregistering): Released all slaves bond979 (unregistering): Released all slaves INFO: task syz-executor.4:9547 blocked for more than 140 seconds. bond978 (unregistering): Released all slaves Not tainted 4.19.191-syzkaller #0 bond977 (unregistering): Released all slaves "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. bond976 (unregistering): Released all slaves syz-executor.4 D29192 9547 8134 0x00000004 bond975 (unregistering): Released all slaves Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 bond974 (unregistering): Released all slaves bond973 (unregistering): Released all slaves schedule+0x8d/0x1b0 kernel/sched/core.c:3561 bond972 (unregistering): Released all slaves __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:589 [inline] rwsem_down_write_failed+0x3aa/0x760 kernel/locking/rwsem-xadd.c:618 bond971 (unregistering): Released all slaves bond970 (unregistering): Released all slaves call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:117 bond969 (unregistering): Released all slaves __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x4f/0x90 kernel/locking/rwsem.c:72 bond968 (unregistering): Released all slaves register_netdevice_notifier+0x7b/0x5b0 net/core/dev.c:1639 bond967 (unregistering): Released all slaves bond966 (unregistering): Released all slaves bcm_init+0x1a3/0x210 net/can/bcm.c:1502 bond965 (unregistering): Released all slaves can_create+0x27c/0x470 net/can/af_can.c:184 bond964 (unregistering): Released all slaves __sock_create+0x3d8/0x740 net/socket.c:1276 sock_create net/socket.c:1316 [inline] __sys_socket+0xef/0x200 net/socket.c:1346 bond963 (unregistering): Released all slaves __do_sys_socket net/socket.c:1355 [inline] __se_sys_socket net/socket.c:1353 [inline] __x64_sys_socket+0x6f/0xb0 net/socket.c:1353 bond962 (unregistering): Released all slaves do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe bond961 (unregistering): Released all slaves RIP: 0033:0x4665d9 Code: Bad RIP value. RSP: 002b:00007f0dce8cf188 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 bond960 (unregistering): Released all slaves RAX: ffffffffffffffda RBX: 000000000056c0f0 RCX: 00000000004665d9 RDX: 0000000000000002 RSI: 0000000000000002 RDI: 000000000000001d bond959 (unregistering): Released all slaves RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c0f0 bond958 (unregistering): Released all slaves R13: 00007ffcd10806df R14: 00007f0dce8cf300 R15: 0000000000022000 bond957 (unregistering): Released all slaves INFO: task syz-executor.4:9553 blocked for more than 140 seconds. bond956 (unregistering): Released all slaves Not tainted 4.19.191-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. bond955 (unregistering): Released all slaves syz-executor.4 D30280 9553 8134 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 bond954 (unregistering): Released all slaves bond953 (unregistering): Released all slaves schedule+0x8d/0x1b0 kernel/sched/core.c:3561 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:589 [inline] rwsem_down_write_failed+0x3aa/0x760 kernel/locking/rwsem-xadd.c:618 bond952 (unregistering): Released all slaves bond951 (unregistering): Released all slaves call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:117 bond950 (unregistering): Released all slaves __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x4f/0x90 kernel/locking/rwsem.c:72 bond949 (unregistering): Released all slaves register_netdevice_notifier+0x7b/0x5b0 net/core/dev.c:1639 bond948 (unregistering): Released all slaves bond947 (unregistering): Released all slaves bcm_init+0x1a3/0x210 net/can/bcm.c:1502 bond946 (unregistering): Released all slaves can_create+0x27c/0x470 net/can/af_can.c:184 __sock_create+0x3d8/0x740 net/socket.c:1276 sock_create net/socket.c:1316 [inline] __sys_socket+0xef/0x200 net/socket.c:1346 bond945 (unregistering): Released all slaves bond944 (unregistering): Released all slaves bond943 (unregistering): Released all slaves __do_sys_socket net/socket.c:1355 [inline] __se_sys_socket net/socket.c:1353 [inline] __x64_sys_socket+0x6f/0xb0 net/socket.c:1353 bond942 (unregistering): Released all slaves do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 bond941 (unregistering): Released all slaves entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4665d9 Code: Bad RIP value. bond940 (unregistering): Released all slaves RSP: 002b:00007f0dce8ae188 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 bond939 (unregistering): Released all slaves RAX: ffffffffffffffda RBX: 000000000056c1a8 RCX: 00000000004665d9 RDX: 0000000000000002 RSI: 0000000000000002 RDI: 000000000000001d bond938 (unregistering): Released all slaves RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 bond937 (unregistering): Released all slaves R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c1a8 R13: 00007ffcd10806df R14: 00007f0dce8ae300 R15: 0000000000022000 bond936 (unregistering): Released all slaves Showing all locks held in the system: 1 lock held by khungtaskd/1569: #0: 00000000d78eb0f5 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 bond935 (unregistering): Released all slaves 1 lock held by in:imklog/7761: #0: 000000003fcf1995 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 bond934 (unregistering): Released all slaves 3 locks held by kworker/0:5/5635: #0: 0000000006076502 ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2123 #1: 00000000d66df15c (deferred_process_work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2127 bond933 (unregistering): Released all slaves #2: 00000000f18f4734 (rtnl_mutex){+.+.}, at: switchdev_deferred_process_work+0xa/0x20 net/switchdev/switchdev.c:150 bond932 (unregistering): Released all slaves 2 locks held by agetty/12276: #0: 00000000d31f7c38 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272 bond931 (unregistering): Released all slaves #1: 000000002cc7de2d (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1950 drivers/tty/n_tty.c:2154 bond930 (unregistering): Released all slaves 7 locks held by kworker/u4:2/5357: 3 locks held by kworker/1:2/7863: bond929 (unregistering): Released all slaves #0: 0000000006076502 ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2123 bond928 (unregistering): Released all slaves #1: 00000000d21c37dd ((linkwatch_work).work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2127 bond927 (unregistering): Released all slaves #2: 00000000f18f4734 (rtnl_mutex){+.+.}, at: linkwatch_event+0xb/0x60 net/core/link_watch.c:236 bond926 (unregistering): Released all slaves 1 lock held by syz-executor.4/9547: bond925 (unregistering): Released all slaves #0: 0000000070e247b6 (pernet_ops_rwsem){++++}, at: register_netdevice_notifier+0x7b/0x5b0 net/core/dev.c:1639 1 lock held by syz-executor.4/9553: bond924 (unregistering): Released all slaves #0: 0000000070e247b6 (pernet_ops_rwsem){++++}, at: register_netdevice_notifier+0x7b/0x5b0 net/core/dev.c:1639 bond923 (unregistering): Released all slaves 1 lock held by syz-executor.5/9605: #0: 00000000f18f4734 (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline] #0: 00000000f18f4734 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 net/core/rtnetlink.c:4775 bond922 (unregistering): Released all slaves 3 locks held by kworker/0:2/9625: #0: 000000007a002443 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2123 bond921 (unregistering): Released all slaves #1: 00000000b9f7871d ((addr_chk_work).work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2127 #2: 00000000f18f4734 (rtnl_mutex){+.+.}, at: addrconf_verify_work+0xa/0x20 net/ipv6/addrconf.c:4476 bond920 (unregistering): Released all slaves ============================================= bond919 (unregistering): Released all slaves NMI backtrace for cpu 1 CPU: 1 PID: 1569 Comm: khungtaskd Not tainted 4.19.191-syzkaller #0 bond918 (unregistering): Released all slaves Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: bond917 (unregistering): Released all slaves __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 bond916 (unregistering): Released all slaves kthread+0x33f/0x460 kernel/kthread.c:259 bond915 (unregistering): Released all slaves ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Sending NMI from CPU 1 to CPUs 0: bond914 (unregistering): Released all slaves NMI backtrace for cpu 0 CPU: 0 PID: 5357 Comm: kworker/u4:2 Not tainted 4.19.191-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: netns cleanup_net RIP: 0010:io_serial_out+0x68/0x80 drivers/tty/serial/8250/8250_port.c:456 Code: e1 00 00 00 48 8d 7d 38 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 d3 e3 80 3c 02 00 75 15 03 5d 38 44 89 e0 89 da ee <5b> 5d 41 5c c3 e8 ce 87 d7 fd eb c7 e8 17 8a d7 fd eb e4 0f 1f 44 RSP: 0018:ffff888228057438 EFLAGS: 00000002 RAX: 000000000000005b RBX: 00000000000003f8 RCX: 0000000000000000 RDX: 00000000000003f8 RSI: ffffffff83c0b081 RDI: ffffffff8dc8c218 RBP: ffffffff8dc8c1e0 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: 000000000000005b R13: 000000000000005b R14: ffffffff8dc8c1e0 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff0b863a010 CR3: 00000000b3b42000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: uart_console_write+0x59/0x100 drivers/tty/serial/serial_core.c:1888 serial8250_console_write+0x637/0xad0 drivers/tty/serial/8250/8250_port.c:3288 call_console_drivers kernel/printk/printk.c:1764 [inline] console_unlock+0xbb6/0x1110 kernel/printk/printk.c:2460 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:9632 netdev_info+0xd8/0x110 net/core/dev.c:9679 bond_uninit+0x14e/0x420 drivers/net/bonding/bond_main.c:4407 rollback_registered_many+0x927/0xe70 net/core/dev.c:8202 unregister_netdevice_many.part.0+0x1a/0x300 net/core/dev.c:9316 unregister_netdevice_many net/core/dev.c:9315 [inline] default_device_exit_batch+0x2fa/0x3c0 net/core/dev.c:9787 ops_exit_list+0xf9/0x150 net/core/net_namespace.c:156 cleanup_net+0x3b4/0x8b0 net/core/net_namespace.c:553 process_one_work+0x864/0x1570 kernel/workqueue.c:2152 worker_thread+0x64c/0x1130 kernel/workqueue.c:2295 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415