INFO: task kworker/1:9:5210 blocked for more than 143 seconds. Not tainted 6.1.0-rc3-syzkaller-00706-gfbeb229a6622 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:9 state:D stack:24472 pid:5210 ppid:2 flags:0x00004000 Workqueue: ipv6_addrconf addrconf_verify_work Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0xae9/0x53f0 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6638 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0xa44/0x1350 kernel/locking/mutex.c:747 addrconf_verify_work+0xe/0x20 net/ipv6/addrconf.c:4624 process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2e4/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 INFO: task kworker/0:0:10112 blocked for more than 143 seconds. Not tainted 6.1.0-rc3-syzkaller-00706-gfbeb229a6622 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:0 state:D stack:24856 pid:10112 ppid:2 flags:0x00004000 Workqueue: ipv6_addrconf addrconf_verify_work Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0xae9/0x53f0 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6638 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0xa44/0x1350 kernel/locking/mutex.c:747 addrconf_verify_work+0xe/0x20 net/ipv6/addrconf.c:4624 process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2e4/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 INFO: task kworker/1:1:13755 blocked for more than 143 seconds. Not tainted 6.1.0-rc3-syzkaller-00706-gfbeb229a6622 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:1 state:D stack:28288 pid:13755 ppid:2 flags:0x00004000 Workqueue: events linkwatch_event Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0xae9/0x53f0 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6638 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0xa44/0x1350 kernel/locking/mutex.c:747 linkwatch_event+0xb/0x60 net/core/link_watch.c:263 process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2e4/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 INFO: task kworker/1:4:13756 blocked for more than 144 seconds. Not tainted 6.1.0-rc3-syzkaller-00706-gfbeb229a6622 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:4 state:D stack:28288 pid:13756 ppid:2 flags:0x00004000 Workqueue: events switchdev_deferred_process_work Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0xae9/0x53f0 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6638 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0xa44/0x1350 kernel/locking/mutex.c:747 switchdev_deferred_process_work+0xa/0x20 net/switchdev/switchdev.c:75 process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2e4/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 INFO: task syz-executor.4:13834 blocked for more than 144 seconds. Not tainted 6.1.0-rc3-syzkaller-00706-gfbeb229a6622 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:27224 pid:13834 ppid:3632 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0xae9/0x53f0 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6638 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0xa44/0x1350 kernel/locking/mutex.c:747 smc_pnet_create_pnetids_list net/smc/smc_pnet.c:805 [inline] smc_pnet_net_init+0x214/0x460 net/smc/smc_pnet.c:874 smc_net_init+0x31/0x40 net/smc/af_smc.c:3342 ops_init+0xb9/0x680 net/core/net_namespace.c:135 setup_net+0x793/0xe60 net/core/net_namespace.c:333 copy_net_ns+0x317/0x6a0 net/core/net_namespace.c:483 create_new_namespaces+0x3f6/0xb20 kernel/nsproxy.c:110 unshare_nsproxy_namespaces+0xc1/0x1f0 kernel/nsproxy.c:226 ksys_unshare+0x445/0x920 kernel/fork.c:3188 __do_sys_unshare kernel/fork.c:3259 [inline] __se_sys_unshare kernel/fork.c:3257 [inline] __x64_sys_unshare+0x2d/0x40 kernel/fork.c:3257 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f49a728b5a9 RSP: 002b:00007f49a80d1168 EFLAGS: 00000246 ORIG_RAX: 0000000000000110 RAX: ffffffffffffffda RBX: 00007f49a73abf80 RCX: 00007f49a728b5a9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000006c060000 RBP: 00007f49a72e67b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdb80b03ff R14: 00007f49a80d1300 R15: 0000000000022000 INFO: task syz-executor.4:13857 blocked for more than 144 seconds. Not tainted 6.1.0-rc3-syzkaller-00706-gfbeb229a6622 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:25504 pid:13857 ppid:3632 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0xae9/0x53f0 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6638 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0xa44/0x1350 kernel/locking/mutex.c:747 nl80211_pre_doit+0xb0/0xab0 net/wireless/nl80211.c:16157 genl_family_rcv_msg_doit+0x1ee/0x320 net/netlink/genetlink.c:751 genl_family_rcv_msg net/netlink/genetlink.c:833 [inline] genl_rcv_msg+0x441/0x780 net/netlink/genetlink.c:850 netlink_rcv_skb+0x161/0x440 net/netlink/af_netlink.c:2562 genl_rcv+0x24/0x40 net/netlink/genetlink.c:861 netlink_unicast_kernel net/netlink/af_netlink.c:1330 [inline] netlink_unicast+0x543/0x7f0 net/netlink/af_netlink.c:1356 netlink_sendmsg+0x917/0xe10 net/netlink/af_netlink.c:1932 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:734 sock_no_sendpage+0x108/0x150 net/core/sock.c:3233 kernel_sendpage.part.0+0x1d5/0x700 net/socket.c:3555 kernel_sendpage net/socket.c:3552 [inline] sock_sendpage+0xdf/0x140 net/socket.c:1054 pipe_to_sendpage+0x2ad/0x380 fs/splice.c:361 splice_from_pipe_feed fs/splice.c:415 [inline] __splice_from_pipe+0x445/0x8a0 fs/splice.c:559 splice_from_pipe fs/splice.c:594 [inline] generic_splice_sendpage+0xd4/0x140 fs/splice.c:743 do_splice_from fs/splice.c:764 [inline] direct_splice_actor+0x110/0x180 fs/splice.c:931 splice_direct_to_actor+0x331/0x8a0 fs/splice.c:886 do_splice_direct+0x1a7/0x270 fs/splice.c:974 do_sendfile+0xb19/0x1270 fs/read_write.c:1255 __do_sys_sendfile64 fs/read_write.c:1323 [inline] __se_sys_sendfile64 fs/read_write.c:1309 [inline] __x64_sys_sendfile64+0x1cc/0x210 fs/read_write.c:1309 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f49a728b5a9 RSP: 002b:00007f49a808f168 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f49a73ac120 RCX: 00007f49a728b5a9 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000005 RBP: 00007f49a72e67b0 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdb80b03ff R14: 00007f49a808f300 R15: 0000000000022000 INFO: task syz-executor.2:13849 blocked for more than 144 seconds. Not tainted 6.1.0-rc3-syzkaller-00706-gfbeb229a6622 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:26528 pid:13849 ppid:3637 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0xae9/0x53f0 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6638 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0xa44/0x1350 kernel/locking/mutex.c:747 rtnl_lock net/core/rtnetlink.c:74 [inline] rtnetlink_rcv_msg+0x3e5/0xca0 net/core/rtnetlink.c:6094 netlink_rcv_skb+0x161/0x440 net/netlink/af_netlink.c:2562 netlink_unicast_kernel net/netlink/af_netlink.c:1330 [inline] netlink_unicast+0x543/0x7f0 net/netlink/af_netlink.c:1356 netlink_sendmsg+0x917/0xe10 net/netlink/af_netlink.c:1932 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:734 ____sys_sendmsg+0x712/0x8c0 net/socket.c:2476 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2530 __sys_sendmsg+0xf3/0x1c0 net/socket.c:2559 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7feb3de8b5a9 RSP: 002b:00007feb3ec23168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007feb3dfabf80 RCX: 00007feb3de8b5a9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000008 RBP: 00007feb3dee67b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc695aaf7f R14: 00007feb3ec23300 R15: 0000000000022000 INFO: task syz-executor.0:13854 blocked for more than 145 seconds. Not tainted 6.1.0-rc3-syzkaller-00706-gfbeb229a6622 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:27920 pid:13854 ppid:4658 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0xae9/0x53f0 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6638 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0xa44/0x1350 kernel/locking/mutex.c:747 tun_detach drivers/net/tun.c:698 [inline] tun_chr_close+0x3a/0x180 drivers/net/tun.c:3459 __fput+0x27c/0xa90 fs/file_table.c:320 task_work_run+0x16b/0x270 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop kernel/entry/common.c:171 [inline] exit_to_user_mode_prepare+0x23c/0x250 kernel/entry/common.c:203 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:296 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fe65728b5a9 RSP: 002b:00007fe657f58168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffea RBX: 00007fe6573ac050 RCX: 00007fe65728b5a9 RDX: 0000000000105000 RSI: 0000000020000080 RDI: ffffffffffffff9c RBP: 00007fe6572e67b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffcc49476af R14: 00007fe657f58300 R15: 0000000000022000 INFO: task syz-executor.3:13866 blocked for more than 145 seconds. Not tainted 6.1.0-rc3-syzkaller-00706-gfbeb229a6622 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:29248 pid:13866 ppid:3636 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0xae9/0x53f0 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6638 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0xa44/0x1350 kernel/locking/mutex.c:747 addrconf_add_ifaddr+0x131/0x1c0 net/ipv6/addrconf.c:3064 inet6_ioctl+0xf3/0x280 net/ipv6/af_inet6.c:581 sock_do_ioctl+0xcc/0x230 net/socket.c:1169 sock_ioctl+0x2f1/0x640 net/socket.c:1286 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fe993a8b5a9 RSP: 002b:00007fe99486f168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fe993babf80 RCX: 00007fe993a8b5a9 RDX: 0000000020000040 RSI: 0000000000008916 RDI: 0000000000000003 RBP: 00007fe993ae67b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe3ecbbbbf R14: 00007fe99486f300 R15: 0000000000022000 INFO: task syz-executor.3:13867 blocked for more than 145 seconds. Not tainted 6.1.0-rc3-syzkaller-00706-gfbeb229a6622 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:28824 pid:13867 ppid:3636 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0xae9/0x53f0 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6638 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0xa44/0x1350 kernel/locking/mutex.c:747 dev_ioctl+0x1a7/0xed0 net/core/dev_ioctl.c:587 sock_do_ioctl+0x15a/0x230 net/socket.c:1183 sock_ioctl+0x2f1/0x640 net/socket.c:1286 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fe993a8b5a9 RSP: 002b:00007fe99484e168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fe993bac050 RCX: 00007fe993a8b5a9 RDX: 0000000020000000 RSI: 0000000000008931 RDI: 0000000000000003 RBP: 00007fe993ae67b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe3ecbbbbf R14: 00007fe99484e300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/12: #0: ffffffff8bf87fb0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507 1 lock held by rcu_tasks_trace/13: #0: ffffffff8bf87cb0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507 1 lock held by khungtaskd/28: #0: ffffffff8bf88b00 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6494 4 locks held by kworker/u4:6/2453: 2 locks held by getty/3286: #0: ffff88814aea9098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244 #1: ffffc900031262f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef0/0x13e0 drivers/tty/n_tty.c:2177 3 locks held by kworker/1:9/5210: #0: ffff88802706c138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff88802706c138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff88802706c138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff88802706c138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff88802706c138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff88802706c138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260 #1: ffffc900045efda8 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264 #2: ffffffff8d7b8b28 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xe/0x20 net/ipv6/addrconf.c:4624 3 locks held by kworker/0:0/10112: #0: ffff88802706c138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff88802706c138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff88802706c138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff88802706c138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff88802706c138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff88802706c138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260 #1: ffffc900032bfda8 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264 #2: ffffffff8d7b8b28 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xe/0x20 net/ipv6/addrconf.c:4624 3 locks held by kworker/1:1/13755: #0: ffff888011864d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888011864d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888011864d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888011864d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888011864d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888011864d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260 #1: ffffc90003e77da8 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264 #2: ffffffff8d7b8b28 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xb/0x60 net/core/link_watch.c:263 3 locks held by kworker/1:4/13756: #0: ffff888011864d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888011864d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888011864d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888011864d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888011864d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888011864d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260 #1: ffffc90004c1fda8 (deferred_process_work){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264 #2: ffffffff8d7b8b28 (rtnl_mutex){+.+.}-{3:3}, at: switchdev_deferred_process_work+0xa/0x20 net/switchdev/switchdev.c:75 1 lock held by syz-executor.5/13847: #0: ffffffff8d7b8b28 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffffffff8d7b8b28 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e5/0xca0 net/core/rtnetlink.c:6094 2 locks held by syz-executor.4/13834: #0: ffffffff8d7a4f10 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x2f4/0x6a0 net/core/net_namespace.c:479 #1: ffffffff8d7b8b28 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_create_pnetids_list net/smc/smc_pnet.c:805 [inline] #1: ffffffff8d7b8b28 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_net_init+0x214/0x460 net/smc/smc_pnet.c:874 2 locks held by syz-executor.4/13857: #0: ffffffff8d8547b0 (cb_lock){++++}-{3:3}, at: genl_rcv+0x15/0x40 net/netlink/genetlink.c:860 #1: ffffffff8d7b8b28 (rtnl_mutex){+.+.}-{3:3}, at: nl80211_pre_doit+0xb0/0xab0 net/wireless/nl80211.c:16157 1 lock held by syz-executor.2/13849: #0: ffffffff8d7b8b28 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffffffff8d7b8b28 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e5/0xca0 net/core/rtnetlink.c:6094 1 lock held by syz-executor.0/13854: #0: ffffffff8d7b8b28 (rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:698 [inline] #0: ffffffff8d7b8b28 (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3a/0x180 drivers/net/tun.c:3459 1 lock held by syz-executor.3/13866: #0: ffffffff8d7b8b28 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_add_ifaddr+0x131/0x1c0 net/ipv6/addrconf.c:3064 1 lock held by syz-executor.3/13867: #0: ffffffff8d7b8b28 (rtnl_mutex){+.+.}-{3:3}, at: dev_ioctl+0x1a7/0xed0 net/core/dev_ioctl.c:587 1 lock held by syz-executor.5/13894: #0: ffffffff8d7b8b28 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffffffff8d7b8b28 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e5/0xca0 net/core/rtnetlink.c:6094 1 lock held by syz-executor.4/13899: #0: ffffffff8d7b8b28 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffffffff8d7b8b28 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e5/0xca0 net/core/rtnetlink.c:6094 1 lock held by syz-executor.2/13900: #0: ffffffff8d7b8b28 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffffffff8d7b8b28 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e5/0xca0 net/core/rtnetlink.c:6094 1 lock held by syz-executor.0/13901: #0: ffffffff8d7b8b28 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffffffff8d7b8b28 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e5/0xca0 net/core/rtnetlink.c:6094 1 lock held by syz-executor.3/13902: #0: ffffffff8d7b8b28 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffffffff8d7b8b28 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e5/0xca0 net/core/rtnetlink.c:6094 1 lock held by syz-executor.1/13924: #0: ffffffff8d7b8b28 (rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:698 [inline] #0: ffffffff8d7b8b28 (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3a/0x180 drivers/net/tun.c:3459 1 lock held by syz-executor.1/13927: #0: ffffffff8d7b8b28 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffffffff8d7b8b28 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e5/0xca0 net/core/rtnetlink.c:6094 1 lock held by syz-executor.5/13931: #0: ffffffff8d7b8b28 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffffffff8d7b8b28 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e5/0xca0 net/core/rtnetlink.c:6094 1 lock held by syz-executor.4/13934: #0: ffffffff8d7b8b28 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffffffff8d7b8b28 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e5/0xca0 net/core/rtnetlink.c:6094 1 lock held by syz-executor.3/13938: #0: ffffffff8d7b8b28 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffffffff8d7b8b28 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e5/0xca0 net/core/rtnetlink.c:6094 1 lock held by syz-executor.0/13940: #0: ffffffff8d7b8b28 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffffffff8d7b8b28 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e5/0xca0 net/core/rtnetlink.c:6094 1 lock held by syz-executor.2/13954: #0: ffffffff8d7b8b28 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffffffff8d7b8b28 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e5/0xca0 net/core/rtnetlink.c:6094 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.1.0-rc3-syzkaller-00706-gfbeb229a6622 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x24/0x18a lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x32f/0x3c0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline] watchdog+0xc71/0xfc0 kernel/hung_task.c:377 kthread+0x2e4/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 1170 Comm: kworker/u4:5 Not tainted 6.1.0-rc3-syzkaller-00706-gfbeb229a6622 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Workqueue: bat_events batadv_purge_orig RIP: 0010:check_preemption_disabled+0xe/0x170 lib/smp_processor_id.c:14 Code: 44 00 00 85 db 74 07 0f 1f 44 00 00 0f 0b 0f 1f 44 00 00 5b e9 93 fb ff ff cc cc cc 41 56 41 55 49 89 f5 41 54 55 48 89 fd 53 <0f> 1f 44 00 00 65 44 8b 25 ad 59 72 76 65 8b 1d 0e af 72 76 81 e3 RSP: 0018:ffffc900001e0be8 EFLAGS: 00000206 RAX: 0000000000000001 RBX: 1ffff9200003c18b RCX: ffffffff815fcb8c RDX: 0000000000000001 RSI: ffffffff8a49a520 RDI: ffffffff8a49a560 RBP: ffffffff8a49a560 R08: 0000000000000000 R09: ffffffff8de24b57 R10: fffffbfff1bc496a R11: 0000000000000001 R12: 0000000000000001 R13: ffffffff8a49a520 R14: ffffc900001e0d80 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c000835000 CR3: 000000000bc8e000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_lockdep_current_cpu_online kernel/rcu/tree.c:766 [inline] rcu_lockdep_current_cpu_online+0x2d/0x140 kernel/rcu/tree.c:758 rcu_read_lock_held_common kernel/rcu/update.c:112 [inline] rcu_read_lock_held_common kernel/rcu/update.c:102 [inline] rcu_read_lock_sched_held+0x25/0x70 kernel/rcu/update.c:123 trace_lock_acquire include/trace/events/lock.h:24 [inline] lock_acquire+0x4fc/0x630 kernel/locking/lockdep.c:5639 call_timer_fn+0x127/0x7c0 kernel/time/timer.c:1471 expire_timers kernel/time/timer.c:1519 [inline] __run_timers.part.0+0x6a2/0xaf0 kernel/time/timer.c:1790 __run_timers kernel/time/timer.c:1768 [inline] run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1803 __do_softirq+0x1f7/0xad8 kernel/softirq.c:571 do_softirq.part.0+0xde/0x130 kernel/softirq.c:472 do_softirq kernel/softirq.c:464 [inline] __local_bh_enable_ip+0x102/0x120 kernel/softirq.c:396 spin_unlock_bh include/linux/spinlock.h:395 [inline] batadv_purge_orig_ref+0xeb7/0x1550 net/batman-adv/originator.c:1259 batadv_purge_orig+0x17/0x60 net/batman-adv/originator.c:1272 process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2e4/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306