rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 2687 jiffies s: 15241 root: 0x2/. rcu: blocking rcu_node structures (internal RCU debug): Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 4555 Comm: udevd Not tainted 6.10.0-next-20240718-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 RIP: 0010:preempt_count_sub+0x66/0x170 kernel/sched/core.c:5746 Code: c1 81 e1 ff ff ff 7f 39 d9 7c 27 81 fb fe 00 00 00 77 07 0f b6 c0 85 c0 74 5f 65 8b 05 eb f4 a0 7e f7 db 65 01 1d e2 f4 a0 7e <5b> 41 5e c3 cc cc cc cc 90 e8 dc 6d 4a 03 85 c0 74 3a 48 c7 c0 10 RSP: 0018:ffffc90000a18360 EFLAGS: 00000017 RAX: 0000000000000104 RBX: 00000000ffffffff RCX: 0000000000000104 RDX: 0000000000000097 RSI: ffffffff8c20a740 RDI: 0000000000000001 RBP: 000000000000056e R08: ffffffff8540bf44 R09: 1ffff11003eed046 R10: dffffc0000000000 R11: ffffffff8b90aab0 R12: dffffc0000000000 R13: ffffffff94847f50 R14: dffffc0000000000 R15: 0000000000000001 FS: 00007ff722b44c80(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f80e29b7494 CR3: 000000007aab8000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: delay_tsc+0x4f/0xe0 arch/x86/lib/delay.c:77 wait_for_lsr drivers/tty/serial/8250/8250_port.c:2074 [inline] serial8250_console_fifo_write drivers/tty/serial/8250/8250_port.c:3315 [inline] serial8250_console_write+0x1328/0x1ed0 drivers/tty/serial/8250/8250_port.c:3393 console_emit_next_record kernel/printk/printk.c:3030 [inline] console_flush_all+0x880/0xf50 kernel/printk/printk.c:3102 console_unlock+0x13b/0x4d0 kernel/printk/printk.c:3173 vprintk_emit+0x7a1/0x900 kernel/printk/printk.c:2423 _printk+0xd5/0x120 kernel/printk/printk.c:2450 sched_show_task+0x4d7/0x6d0 kernel/sched/core.c:7505 report_rtnl_holders+0x327/0x400 net/core/rtnetlink.c:110 call_timer_fn+0x18e/0x650 kernel/time/timer.c:1792 expire_timers kernel/time/timer.c:1843 [inline] __run_timers kernel/time/timer.c:2417 [inline] __run_timer_base+0x66a/0x8e0 kernel/time/timer.c:2428 run_timer_base kernel/time/timer.c:2437 [inline] run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2447 handle_softirqs+0x2c4/0x970 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:console_flush_all+0x9f7/0xf50 kernel/printk/printk.c:3103 Code: 20 00 90 0f 0b 90 e9 f3 f9 ff ff e8 63 2a 20 00 e8 4e d6 20 0a 4d 85 f6 74 c0 e8 54 2a 20 00 fb 49 bd 00 00 00 00 00 fc ff df <43> 80 3c 2f 00 48 8b 5c 24 30 74 08 48 89 df e8 e5 97 87 00 4c 8b RSP: 0018:ffffc9000313f400 EFLAGS: 00000293 RAX: ffffffff8173afec RBX: 0000000000000000 RCX: ffff88807a220000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc9000313f590 R08: ffffffff8173af93 R09: 1ffffffff2601f0b R10: dffffc0000000000 R11: fffffbfff2601f0c R12: ffffffff8eb314a0 R13: dffffc0000000000 R14: 0000000000000200 R15: 1ffffffff1d6629f console_unlock+0x13b/0x4d0 kernel/printk/printk.c:3173 vprintk_emit+0x7a1/0x900 kernel/printk/printk.c:2423 _printk+0xd5/0x120 kernel/printk/printk.c:2450 disk_unlock_native_capacity block/partitions/core.c:512 [inline] blk_add_partition block/partitions/core.c:535 [inline] blk_add_partitions block/partitions/core.c:623 [inline] bdev_disk_changed+0xdc1/0x13d0 block/partitions/core.c:683 blkdev_get_whole+0x2d2/0x450 block/bdev.c:700 bdev_open+0x2d4/0xc60 block/bdev.c:909 bdev_file_open_by_dev+0x1b0/0x230 block/bdev.c:1011 disk_scan_partitions+0x1be/0x2b0 block/genhd.c:367 blkdev_common_ioctl+0x14e2/0x2410 block/ioctl.c:600 blkdev_ioctl+0x4cd/0x6b0 block/ioctl.c:670 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7ff72271ad49 Code: 5c c3 48 8d 44 24 08 48 89 54 24 e0 48 89 44 24 c0 48 8d 44 24 d0 48 89 44 24 c8 b8 10 00 00 00 c7 44 24 b8 10 00 00 00 0f 05 <41> 89 c0 3d 00 f0 ff ff 76 10 48 8b 15 ae 60 0d 00 f7 d8 41 83 c8 RSP: 002b:00007ffef83cb7c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007ff72271ad49 RDX: 0000000000000000 RSI: 000000000000125f RDI: 000000000000000c RBP: 000055c7febc8ed0 R08: 0000000000000008 R09: 5161b7139b667df0 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffef83cba88 R13: 000000000000000c R14: 000055c7e917dfee R15: 0000000000000000 Workqueue: netns cleanup_net Call Trace: context_switch kernel/sched/core.c:5239 [inline] __schedule+0x1800/0x4a60 kernel/sched/core.c:6603 __schedule_loop kernel/sched/core.c:6680 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6695 synchronize_rcu_expedited+0x684/0x830 kernel/rcu/tree_exp.h:982 synchronize_rcu+0x11b/0x360 kernel/rcu/tree.c:4020 lockdep_unregister_key+0x4b7/0x540 kernel/locking/lockdep.c:6548 __qdisc_destroy+0x165/0x410 net/sched/sch_generic.c:1079 netdev_for_each_tx_queue include/linux/netdevice.h:2513 [inline] dev_shutdown+0x9b/0x450 net/sched/sch_generic.c:1490 unregister_netdevice_many_notify+0x97b/0x1c40 net/core/dev.c:11333 unregister_netdevice_many net/core/dev.c:11405 [inline] default_device_exit_batch+0xa0f/0xa90 net/core/dev.c:11888 ops_exit_list net/core/net_namespace.c:178 [inline] cleanup_net+0x89d/0xcc0 net/core/net_namespace.c:640 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312 worker_thread+0x86d/0xd40 kernel/workqueue.c:3390 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 DEBUG: waiting rtnl_mutex for 6794 jiffies. task:kworker/1:7 state:D stack:25360 pid:6598 tgid:6598 ppid:2 flags:0x00004000 Workqueue: events linkwatch_event Call Trace: context_switch kernel/sched/core.c:5239 [inline] __schedule+0x1800/0x4a60 kernel/sched/core.c:6603 __schedule_loop kernel/sched/core.c:6680 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6695 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6752 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 linkwatch_event+0xe/0x60 net/core/link_watch.c:276 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312 worker_thread+0x86d/0xd40 kernel/workqueue.c:3390 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Showing all locks held in the system: 5 locks held by kworker/u8:0/11: #0: ffff888015edd948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline] #0: ffff888015edd948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312 #1: ffffc90000107d00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline] #1: ffffc90000107d00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312 #2: ffffffff8f5fced0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0 net/core/net_namespace.c:594 #3: ffffffff8f609a48 (rtnl_mutex){+.+.}-{3:3}, at: default_device_exit_batch+0xe9/0xa90 net/core/dev.c:11874 #4: ffffffff8e33ce78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline] #4: ffffffff8e33ce78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 kernel/rcu/tree_exp.h:967 4 locks held by kworker/u8:1/12: #0: ffff888018aac948 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline] #0: ffff888018aac948 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312 #1: ffffc90000117d00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline] #1: ffffc90000117d00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312 #2: ffff88802efdc0e0 (&type->s_umount_key#33){++++}-{3:3}, at: super_trylock_shared+0x22/0xf0 fs/super.c:562 #3: ffff88802efdeb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_writepages_down_read fs/ext4/ext4.h:1772 [inline] #3: ffff88802efdeb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_writepages+0x1bf/0x3c0 fs/ext4/inode.c:2841 3 locks held by kworker/u8:9/2815: #0: ffff888029b57148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline] #0: ffff888029b57148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312 #1: ffffc90009b0fd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline] #1: ffffc90009b0fd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312 #2: ffffffff8f609a48 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4194 3 locks held by udevd/4555: #0: ffff88801fcda4c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open+0xf0/0xc60 block/bdev.c:897 #1: ffffc90000a18c00 (net/core/rtnetlink.c:83){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650 kernel/time/timer.c:1789 #2: ffffffff8e337aa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline] #2: ffffffff8e337aa0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline] #2: ffffffff8e337aa0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6695 2 locks held by getty/4852: #0: ffff88802eb920a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc900031232f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2211 3 locks held by kworker/0:5/5158: #0: ffff888015081948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline] #0: ffff888015081948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312 #1: ffffc9000406fd00 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline] #1: ffffc9000406fd00 ((reg_check_chans).work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312 #2: ffffffff8f609a48 (rtnl_mutex){+.+.}-{3:3}, at: reg_check_chans_work+0x99/0xfd0 net/wireless/reg.c:2480 3 locks held by kworker/1:7/6598: #0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline] #0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312 #1: ffffc9000913fd00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline] #1: ffffc9000913fd00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312 #2: ffffffff8f609a48 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:276 1 lock held by syz-executor/7644: #0: ffffffff8f609a48 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:149 [inline] #0: ffffffff8f609a48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6eb/0xd00 net/core/rtnetlink.c:6731 3 locks held by syz-executor/7682: #0: ffffffff8f66f490 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff8f66f348 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff8f66f348 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff8f66f348 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1209 #2: ffffffff8f609a48 (rtnl_mutex){+.+.}-{3:3}, at: wg_set_device+0x102/0x2160 drivers/net/wireguard/netlink.c:504 1 lock held by syz-executor/7696: #0: ffffffff8f609a48 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:149 [inline] #0: ffffffff8f609a48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6eb/0xd00 net/core/rtnetlink.c:6731 7 locks held by syz-executor/7712: #0: ffff88802a124420 (sb_writers#8){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2876 [inline] #0: ffff88802a124420 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x227/0xc90 fs/read_write.c:586 #1: ffff888061a99888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1eb/0x500 fs/kernfs/file.c:325 #2: ffff888022f61968 (kn->active#50){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x20f/0x500 fs/kernfs/file.c:326 #3: ffffffff8ef0b548 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: new_device_store+0x1b4/0x890 drivers/net/netdevsim/bus.c:166 #4: ffff888069e3b0e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline] #4: ffff888069e3b0e8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x8e/0x520 drivers/base/dd.c:1004 #5: ffff888069e3c250 (&devlink->lock_key#15){+.+.}-{3:3}, at: nsim_drv_probe+0xcb/0xb80 drivers/net/netdevsim/dev.c:1534 #6: ffffffff8f609a48 (rtnl_mutex){+.+.}-{3:3}, at: nsim_init_netdevsim drivers/net/netdevsim/netdev.c:678 [inline] #6: ffffffff8f609a48 (rtnl_mutex){+.+.}-{3:3}, at: nsim_create+0x408/0x890 drivers/net/netdevsim/netdev.c:750 2 locks held by syz.3.692/7867: #0: ffffffff8f66f490 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff8f66f348 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff8f66f348 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff8f66f348 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1209 1 lock held by syz-executor/7870: #0: ffffffff8f609a48 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:149 [inline] #0: ffffffff8f609a48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6eb/0xd00 net/core/rtnetlink.c:6731 1 lock held by syz-executor/7873: #0: ffffffff8f609a48 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:149 [inline] #0: ffffffff8f609a48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6eb/0xd00 net/core/rtnetlink.c:6731 1 lock held by syz-executor/7876: #0: ffffffff8f609a48 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:149 [inline] #0: ffffffff8f609a48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6eb/0xd00 net/core/rtnetlink.c:6731 1 lock held by syz-executor/7879: #0: ffffffff8f609a48 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:149 [inline] #0: ffffffff8f609a48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6eb/0xd00 net/core/rtnetlink.c:6731 1 lock held by syz-executor/7882: #0: ffffffff8f609a48 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:149 [inline] #0: ffffffff8f609a48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6eb/0xd00 net/core/rtnetlink.c:6731 ============================================= DEBUG: waiting rtnl_mutex for 5774 jiffies. task:syz-executor state:D stack:24992 pid:7870 tgid:7870 ppid:1 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5239 [inline] __schedule+0x1800/0x4a60 kernel/sched/core.c:6603 __schedule_loop kernel/sched/core.c:6680 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6695 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6752 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 rtnl_lock net/core/rtnetlink.c:149 [inline] rtnetlink_rcv_msg+0x6eb/0xd00 net/core/rtnetlink.c:6731 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2550 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline] netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1357 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:745 __sys_sendto+0x3a4/0x4f0 net/socket.c:2204 __do_sys_sendto net/socket.c:2216 [inline] __se_sys_sendto net/socket.c:2212 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2212 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fdad33778ec RSP: 002b:00007ffe27b63df0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007fdad4034620 RCX: 00007fdad33778ec RDX: 0000000000000028 RSI: 00007fdad4034670 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007ffe27b63e44 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003 R13: 0000000000000000 R14: 00007fdad4034670 R15: 0000000000000000 DEBUG: waiting rtnl_mutex for 3354 jiffies. task:kworker/0:5 state:D stack:22584 pid:5158 tgid:5158 ppid:2 flags:0x00004000 Workqueue: events_power_efficient reg_check_chans_work Call Trace: context_switch kernel/sched/core.c:5239 [inline] __schedule+0x1800/0x4a60 kernel/sched/core.c:6603 __schedule_loop kernel/sched/core.c:6680 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6695 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6752 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 reg_check_chans_work+0x99/0xfd0 net/wireless/reg.c:2480 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312 worker_thread+0x86d/0xd40 kernel/workqueue.c:3390 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 DEBUG: waiting rtnl_mutex for 3234 jiffies. task:syz-executor state:D stack:24992 pid:7873 tgid:7873 ppid:1 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5239 [inline] __schedule+0x1800/0x4a60 kernel/sched/core.c:6603 __schedule_loop kernel/sched/core.c:6680 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6695 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6752 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 rtnl_lock net/core/rtnetlink.c:149 [inline] rtnetlink_rcv_msg+0x6eb/0xd00 net/core/rtnetlink.c:6731 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2550 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline] netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1357 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:745 __sys_sendto+0x3a4/0x4f0 net/socket.c:2204 __do_sys_sendto net/socket.c:2216 [inline] __se_sys_sendto net/socket.c:2212 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2212 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f13a13778ec RSP: 002b:00007ffdae5248b0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f13a2034620 RCX: 00007f13a13778ec RDX: 0000000000000028 RSI: 00007f13a2034670 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007ffdae524904 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003 R13: 0000000000000000 R14: 00007f13a2034670 R15: 0000000000000000 DEBUG: waiting rtnl_mutex for 3085 jiffies. task:syz-executor state:D stack:24992 pid:7876 tgid:7876 ppid:1 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5239 [inline] __schedule+0x1800/0x4a60 kernel/sched/core.c:6603 __schedule_loop kernel/sched/core.c:6680 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6695 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6752 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 rtnl_lock net/core/rtnetlink.c:149 [inline] rtnetlink_rcv_msg+0x6eb/0xd00 net/core/rtnetlink.c:6731 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2550 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline] netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1357 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:745 __sys_sendto+0x3a4/0x4f0 net/socket.c:2204 __do_sys_sendto net/socket.c:2216 [inline] __se_sys_sendto net/socket.c:2212 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2212 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb3f45778ec RSP: 002b:00007ffcbace38a0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007fb3f5234620 RCX: 00007fb3f45778ec RDX: 0000000000000028 RSI: 00007fb3f5234670 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007ffcbace38f4 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003 R13: 0000000000000000 R14: 00007fb3f5234670 R15: 0000000000000000 DEBUG: waiting rtnl_mutex for 3044 jiffies. task:syz-executor state:D stack:24992 pid:7879 tgid:7879 ppid:1 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5239 [inline] __schedule+0x1800/0x4a60 kernel/sched/core.c:6603 __schedule_loop kernel/sched/core.c:6680 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6695 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6752 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 rtnl_lock net/core/rtnetlink.c:149 [inline] rtnetlink_rcv_msg+0x6eb/0xd00 net/core/rtnetlink.c:6731 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2550 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline] netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1357 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:745 __sys_sendto+0x3a4/0x4f0 net/socket.c:2204 __do_sys_sendto net/socket.c:2216 [inline] __se_sys_sendto net/socket.c:2212 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2212 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7efee5b778ec RSP: 002b:00007ffc1a172970 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007efee6834620 RCX: 00007efee5b778ec RDX: 0000000000000028 RSI: 00007efee6834670 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007ffc1a1729c4 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003 R13: 0000000000000000 R14: 00007efee6834670 R15: 0000000000000000 DEBUG: waiting rtnl_mutex for 2877 jiffies. task:syz-executor state:D stack:24992 pid:7882 tgid:7882 ppid:1 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5239 [inline] __schedule+0x1800/0x4a60 kernel/sched/core.c:6603 __schedule_loop kernel/sched/core.c:6680 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6695 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6752 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 rtnl_lock net/core/rtnetlink.c:149 [inline] rtnetlink_rcv_msg+0x6eb/0xd00 net/core/rtnetlink.c:6731 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2550 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline] netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1357 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:745 __sys_sendto+0x3a4/0x4f0 net/socket.c:2204 __do_sys_sendto net/socket.c:2216 [inline] __se_sys_sendto net/socket.c:2212 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2212 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f76f1b778ec RSP: 002b:00007ffe693aa6b0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f76f2834620 RCX: 00007f76f1b778ec RDX: 0000000000000028 RSI: 00007f76f2834670 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007ffe693aa704 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003 R13: 0000000000000000 R14: 00007f76f2834670 R15: 0000000000000000 DEBUG: waiting rtnl_mutex for 7206 jiffies. task:syz-executor state:D stack:21728 pid:7644 tgid:7644 ppid:1 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5239 [inline] __schedule+0x1800/0x4a60 kernel/sched/core.c:6603 __schedule_loop kernel/sched/core.c:6680 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6695 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6752 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 rtnl_lock net/core/rtnetlink.c:149 [inline] rtnetlink_rcv_msg+0x6eb/0xd00 net/core/rtnetlink.c:6731 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2550 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline] netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1357 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:745 __sys_sendto+0x3a4/0x4f0 net/socket.c:2204 __do_sys_sendto net/socket.c:2216 [inline] __se_sys_sendto net/socket.c:2212 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2212 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb3147778ec RSP: 002b:00007ffec6e3bf90 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007fb315434620 RCX: 00007fb3147778ec RDX: 0000000000000020 RSI: 00007fb315434670 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007ffec6e3bfe4 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003 R13: 0000000000000000 R14: 00007fb315434670 R15: 0000000000000000 DEBUG: waiting rtnl_mutex for 7227 jiffies. task:syz-executor state:D stack:21360 pid:7682 tgid:7682 ppid:1 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5239 [inline] __schedule+0x1800/0x4a60 kernel/sched/core.c:6603 __schedule_loop kernel/sched/core.c:6680 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6695 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6752 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 wg_set_device+0x102/0x2160 drivers/net/wireguard/netlink.c:504 genl_family_rcv_msg_doit net/netlink/genetlink.c:1115 [inline] genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline] genl_rcv_msg+0xb14/0xec0 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2550 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline] netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1357 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:745 __sys_sendto+0x3a4/0x4f0 net/socket.c:2204 __do_sys_sendto net/socket.c:2216 [inline] __se_sys_sendto net/socket.c:2212 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2212 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fc498d778ec RSP: 002b:00007ffdbb4c7aa0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007fc499a34620 RCX: 00007fc498d778ec RDX: 0000000000000170 RSI: 00007fc499a34670 RDI: 0000000000000005 RBP: 0000000000000000 R08: 00007ffdbb4c7af4 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000005 R13: 0000000000000000 R14: 00007fc499a34670 R15: 0000000000000000 DEBUG: waiting rtnl_mutex for 7260 jiffies. task:syz-executor state:D stack:21728 pid:7712 tgid:7712 ppid:1 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5239 [inline] __schedule+0x1800/0x4a60 kernel/sched/core.c:6603 __schedule_loop kernel/sched/core.c:6680 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6695 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6752 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 nsim_init_netdevsim drivers/net/netdevsim/netdev.c:678 [inline] nsim_create+0x408/0x890 drivers/net/netdevsim/netdev.c:750 __nsim_dev_port_add+0x6c0/0xae0 drivers/net/netdevsim/dev.c:1390 nsim_dev_port_add_all+0x33/0xf0 drivers/net/netdevsim/dev.c:1446 nsim_drv_probe+0x85f/0xb80 drivers/net/netdevsim/dev.c:1604 really_probe+0x2b8/0xad0 drivers/base/dd.c:657 __driver_probe_device+0x1a2/0x390 drivers/base/dd.c:799 driver_probe_device+0x50/0x430 drivers/base/dd.c:829 __device_attach_driver+0x2d6/0x530 drivers/base/dd.c:957 bus_for_each_drv+0x24e/0x2e0 drivers/base/bus.c:457 __device_attach+0x333/0x520 drivers/base/dd.c:1029 bus_probe_device+0x189/0x260 drivers/base/bus.c:532 device_add+0x856/0xbf0 drivers/base/core.c:3679 nsim_bus_dev_new drivers/net/netdevsim/bus.c:442 [inline] new_device_store+0x3f3/0x890 drivers/net/netdevsim/bus.c:173 kernfs_fop_write_iter+0x3a1/0x500 fs/kernfs/file.c:334 new_sync_write fs/read_write.c:497 [inline] vfs_write+0xa72/0xc90 fs/read_write.c:590 ksys_write+0x1a0/0x2c0 fs/read_write.c:643 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fbae19746df RSP: 002b:00007fffe76f9370 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007fbae19746df RDX: 0000000000000003 RSI: 00007fffe76f93c0 RDI: 0000000000000005 RBP: 00007fbae19e45d6 R08: 0000000000000000 R09: 00007fffe76f91c7 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003 R13: 00007fffe76f93c0 R14: 00007fbae2634620 R15: 0000000000000003 DEBUG: waiting rtnl_mutex for 7301 jiffies. task:kworker/u8:9 state:D stack:18544 pid:2815 tgid:2815 ppid:2 flags:0x00004000 Workqueue: ipv6_addrconf addrconf_dad_work Call Trace: context_switch kernel/sched/core.c:5239 [inline] __schedule+0x1800/0x4a60 kernel/sched/core.c:6603 __schedule_loop kernel/sched/core.c:6680 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6695 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6752 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4194 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312 worker_thread+0x86d/0xd40 kernel/workqueue.c:3390 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 DEBUG: waiting rtnl_mutex for 7322 jiffies. task:syz-executor state:D stack:21728 pid:7696 tgid:7696 ppid:1 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5239 [inline] __schedule+0x1800/0x4a60 kernel/sched/core.c:6603 __schedule_loop kernel/sched/core.c:6680 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6695 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6752 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 rtnl_lock net/core/rtnetlink.c:149 [inline] rtnetlink_rcv_msg+0x6eb/0xd00 net/core/rtnetlink.c:6731 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2550 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline] netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1357 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:745 __sys_sendto+0x3a4/0x4f0 net/socket.c:2204 __do_sys_sendto net/socket.c:2216 [inline] __se_sys_sendto net/socket.c:2212 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2212 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f442a9778ec RSP: 002b:00007ffe740afeb0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f442b634620 RCX: 00007f442a9778ec RDX: 0000000000000028 RSI: 00007f442b634670 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007ffe740aff04 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003 R13: 0000000000000000 R14: 00007f442b634670 R15: 0000000000000000 DEBUG: holding rtnl_mutex for 7350 jiffies. task:kworker/u8:0 state:D stack:22656 pid:11 tgid:11 ppid:2 flags:0x00004000 Workqueue: netns cleanup_net Call Trace: context_switch kernel/sched/core.c:5239 [inline] __schedule+0x1800/0x4a60 kernel/sched/core.c:6603 __schedule_loop kernel/sched/core.c:6680 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6695 synchronize_rcu_expedited+0x684/0x830 kernel/rcu/tree_exp.h:982 synchronize_rcu+0x11b/0x360 kernel/rcu/tree.c:4020 lockdep_unregister_key+0x4b7/0x540 kernel/locking/lockdep.c:6548 __qdisc_destroy+0x165/0x410 net/sched/sch_generic.c:1079 qdisc_put net/sched/sch_generic.c:1105 [inline] dev_shutdown+0x357/0x450 net/sched/sch_generic.c:1493 unregister_netdevice_many_notify+0x97b/0x1c40 net/core/dev.c:11333 unregister_netdevice_many net/core/dev.c:11405 [inline] default_device_exit_batch+0xa0f/0xa90 net/core/dev.c:11888 ops_exit_list net/core/net_namespace.c:178 [inline] cleanup_net+0x89d/0xcc0 net/core/net_namespace.c:640 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312 worker_thread+0x86d/0xd40 kernel/workqueue.c:3390 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 DEBUG: waiting rtnl_mutex for 7376 jiffies. task:kworker/1:7 state:D stack:25360 pid:6598 tgid:6598 ppid:2 flags:0x00004000 Workqueue: events linkwatch_event Call Trace: context_switch kernel/sched/core.c:5239 [inline] __schedule+0x1800/0x4a60 kernel/sched/core.c:6603 __schedule_loop kernel/sched/core.c:6680 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6695 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6752 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 linkwatch_event+0xe/0x60 net/core/link_watch.c:276 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312 worker_thread+0x86d/0xd40 kernel/workqueue.c:3390 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Showing all locks held in the system: 5 locks held by kworker/u8:0/11: #0: ffff888015edd948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline] ffff888015edd948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312 #1: ffffc90000107d00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline] (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312 #2: ffffffff8f5fced0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0 net/core/net_namespace.c:594 #3: ffffffff8f609a48 (rtnl_mutex){+.+.}-{3:3}, at: default_device_exit_batch+0xe9/0xa90 net/core/dev.c:11874 #4: ffffffff8e33ce78 ( rcu_state.exp_mutex ){+.+.}-{3:3} , at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline] , at: synchronize_rcu_expedited+0x381/0x830 kernel/rcu/tree_exp.h:967 4 locks held by kworker/u8:4/61: #0: ffff88802a364148 ((wq_completion)bat_events ){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline] ){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312 #1: ffffc900015cfd00 ((work_completion)(&(&bat_priv->dat.work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline] #1: ffffc900015cfd00 ((work_completion)(&(&bat_priv->dat.work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312 #2: ffffc90000a18c00 (net/core/rtnetlink.c:83){+.-.}-{0:0} , at: call_timer_fn+0xc0/0x650 kernel/time/timer.c:1789 #3: ffffffff8e337aa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline] ffffffff8e337aa0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline] ffffffff8e337aa0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6695 3 locks held by kworker/u8:9/2815: #0: ffff888029b57148 ( (wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline] (wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312 #1: ffffc90009b0fd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline] #1: ffffc90009b0fd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312 #2: ffffffff8f609a48 (rtnl_mutex ){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4194 4 locks held by udevd/4555: 2 locks held by getty/4852: #0: ffff88802eb920a0 (&tty->ldisc_sem ){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc900031232f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2211 3 locks held by kworker/0:5/5158: #0: ffff888015081948 ((wq_completion)events_power_efficient ){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline] ){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312 #1: ffffc9000406fd00 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline] ffffc9000406fd00 ((reg_check_chans).work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312 #2: ffffffff8f609a48 (rtnl_mutex){+.+.}-{3:3}, at: reg_check_chans_work+0x99/0xfd0 net/wireless/reg.c:2480 3 locks held by kworker/1:7/6598: #0: ffff888015080948 ( (wq_completion)events ){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline] ){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312 #1: ffffc9000913fd00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline] #1: ffffc9000913fd00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312 #2: ffffffff8f609a48 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:276 1 lock held by syz-executor/7644: #0: ffffffff8f609a48 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:149 [inline] #0: ffffffff8f609a48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6eb/0xd00 net/core/rtnetlink.c:6731 3 locks held by syz-executor/7682: #0: ffffffff8f66f490 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff8f66f348 ( genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:35 [inline] genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1209 #2: ffffffff8f609a48 (rtnl_mutex ){+.+.}-{3:3} , at: wg_set_device+0x102/0x2160 drivers/net/wireguard/netlink.c:504 1 lock held by syz-executor/7696: #0: ffffffff8f609a48 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:149 [inline] #0: ffffffff8f609a48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6eb/0xd00 net/core/rtnetlink.c:6731 7 locks held by syz-executor/7712: #0: ffff88802a124420 (sb_writers#8){.+.+}-{0:0} , at: file_start_write include/linux/fs.h:2876 [inline] , at: vfs_write+0x227/0xc90 fs/read_write.c:586 #1: ffff888061a99888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1eb/0x500 fs/kernfs/file.c:325 #2: ffff888022f61968 (kn->active#50){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x20f/0x500 fs/kernfs/file.c:326 #3: ffffffff8ef0b548 (nsim_bus_dev_list_lock){+.+.}-{3:3} , at: new_device_store+0x1b4/0x890 drivers/net/netdevsim/bus.c:166 #4: ffff888069e3b0e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline] #4: ffff888069e3b0e8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x8e/0x520 drivers/base/dd.c:1004 #5: ffff888069e3c250 ( &devlink->lock_key #15){+.+.}-{3:3}, at: nsim_drv_probe+0xcb/0xb80 drivers/net/netdevsim/dev.c:1534 #6: ffffffff8f609a48 (rtnl_mutex ){+.+.}-{3:3} , at: nsim_init_netdevsim drivers/net/netdevsim/netdev.c:678 [inline] , at: nsim_create+0x408/0x890 drivers/net/netdevsim/netdev.c:750 2 locks held by syz.3.692/7867: #0: ffffffff8f66f490 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff8f66f348 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff8f66f348 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff8f66f348 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1209 1 lock held by syz-executor/7870: #0: ffffffff8f609a48 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:149 [inline] #0: ffffffff8f609a48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6eb/0xd00 net/core/rtnetlink.c:6731 1 lock held by syz-executor/7873: #0: ffffffff8f609a48 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:149 [inline] #0: ffffffff8f609a48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6eb/0xd00 net/core/rtnetlink.c:6731 1 lock held by syz-executor/7876: #0: ffffffff8f609a48 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:149 [inline] #0: ffffffff8f609a48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6eb/0xd00 net/core/rtnetlink.c:6731 1 lock held by syz-executor/7879: #0: ffffffff8f609a48 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:149 [inline] #0: ffffffff8f609a48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6eb/0xd00 net/core/rtnetlink.c:6731 1 lock held by syz-executor/7882: #0: ffffffff8f609a48 (rtnl_mutex){+.+.}-{3:3} , at: rtnl_lock net/core/rtnetlink.c:149 [inline] , at: rtnetlink_rcv_msg+0x6eb/0xd00 net/core/rtnetlink.c:6731 ============================================= DEBUG: waiting rtnl_mutex for 6350 jiffies. task:syz-executor state:D stack:24992 pid:7870 tgid:7870 ppid:1 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5239 [inline] __schedule+0x1800/0x4a60 kernel/sched/core.c:6603 __schedule_loop kernel/sched/core.c:6680 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6695 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6752 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 rtnl_lock net/core/rtnetlink.c:149 [inline] rtnetlink_rcv_msg+0x6eb/0xd00 net/core/rtnetlink.c:6731 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2550 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline] netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1357 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:745 __sys_sendto+0x3a4/0x4f0 net/socket.c:2204 __do_sys_sendto net/socket.c:2216 [inline] __se_sys_sendto net/socket.c:2212 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2212 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fdad33778ec RSP: 002b:00007ffe27b63df0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007fdad4034620 RCX: 00007fdad33778ec RDX: 0000000000000028 RSI: 00007fdad4034670 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007ffe27b63e44 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003 R13: 0000000000000000 R14: 00007fdad4034670 R15: 0000000000000000 DEBUG: waiting rtnl_mutex for 3949 jiffies. task:kworker/0:5 state:D stack:22584 pid:5158 tgid:5158 ppid:2 flags:0x00004000 Workqueue: events_power_efficient reg_check_chans_work Call Trace: context_switch kernel/sched/core.c:5239 [inline] __schedule+0x1800/0x4a60 kernel/sched/core.c:6603 __schedule_loop kernel/sched/core.c:6680 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6695 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6752 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 reg_check_chans_work+0x99/0xfd0 net/wireless/reg.c:2480 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312