INFO: task syz-executor.1:5109 blocked for more than 143 seconds. Not tainted 6.9.0-rc5-next-20240426-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:19576 pid:5109 tgid:5109 ppid:1 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5408 [inline] __schedule+0x17e8/0x4a50 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6837 jbd2_log_wait_commit+0x29f/0x4a0 fs/jbd2/journal.c:697 ext4_sync_fs+0x45c/0x710 fs/ext4/super.c:6320 sync_filesystem+0x1c8/0x230 fs/sync.c:66 ovl_sync_fs+0x123/0x180 fs/overlayfs/super.c:232 sync_filesystem+0x1c8/0x230 fs/sync.c:66 generic_shutdown_super+0x72/0x2d0 fs/super.c:621 kill_anon_super+0x3b/0x70 fs/super.c:1226 deactivate_locked_super+0xc4/0x130 fs/super.c:473 cleanup_mnt+0x426/0x4c0 fs/namespace.c:1267 task_work_run+0x24f/0x310 kernel/task_work.c:180 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x168/0x370 kernel/entry/common.c:218 do_syscall_64+0x102/0x240 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fad13c7f1d7 RSP: 002b:00007fffbb889e78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fad13c7f1d7 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffbb889f30 RBP: 00007fffbb889f30 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fffbb88aff0 R13: 00007fad13cc93b9 R14: 000000000001ddb8 R15: 0000000000000010 Showing all locks held in the system: 3 locks held by kworker/0:1/9: #0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3197 [inline] #0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3303 #1: ffffc900000e7d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3198 [inline] ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3303 #2: ffffffff8f5dd948 ( rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:276 2 locks held by kworker/1:0/25: 1 lock held by khungtaskd/30: #0: ffffffff8e333ba0 ( rcu_read_lock ){....}-{1:2} , at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline] , at: rcu_read_lock include/linux/rcupdate.h:841 [inline] , at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614 2 locks held by kworker/1:1/45: 5 locks held by kworker/u8:4/61: #0: ffff888015ed5948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3197 [inline] #0: ffff888015ed5948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3303 #1: ffffc900015c7d00 ( net_cleanup_work ){+.+.}-{0:0} , at: process_one_work kernel/workqueue.c:3198 [inline] , at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3303 #2: ffffffff8f5d11d0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0 net/core/net_namespace.c:591 #3: ffffffff8f5dd948 (rtnl_mutex){+.+.}-{3:3}, at: default_device_exit_batch+0xe9/0xa90 net/core/dev.c:11728 #4: ffffffff8e1ce1d0 ( cpu_hotplug_lock ){++++}-{0:0}, at: flush_all_backlogs net/core/dev.c:5970 [inline] ){++++}-{0:0}, at: unregister_netdevice_many_notify+0x607/0x16e0 net/core/dev.c:11187 3 locks held by kworker/u8:5/1044: #0: ffff88802a264948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3197 [inline] #0: ffff88802a264948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3303 #1: ffffc9000473fd00 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3198 [inline] ffffc9000473fd00 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3303 #2: ffffffff8f5dd948 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x19/0x30 net/ipv6/addrconf.c:4733 12 locks held by kworker/1:2/1793: 2 locks held by dhcpcd/4762: #0: ffff888062ead678 ( nlk_cb_mutex-ROUTE ){+.+.}-{3:3}, at: __netlink_dump_start+0x119/0x780 net/netlink/af_netlink.c:2418 #1: ffffffff8f5dd948 ( rtnl_mutex ){+.+.}-{3:3}, at: netlink_dump+0x5d3/0xe50 net/netlink/af_netlink.c:2336 2 locks held by getty/4849: #0: ffff88802b2360a0 (&tty->ldisc_sem){++++}-{0:0} , at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc90002f0e2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2201 4 locks held by udevd/5097: #0: ffff8880297b8790 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xb7/0xd60 fs/seq_file.c:182 #1: ffff88802d3ee488 (&of->mutex#2){+.+.}-{3:3}, at: kernfs_seq_start+0x53/0x3b0 fs/kernfs/file.c:154 #2: ffff888048729d28 (kn->active#24){.+.+}-{0:0}, at: kernfs_seq_start+0x72/0x3b0 fs/kernfs/file.c:155 #3: ffff88807cbee190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:995 [inline] #3: ffff88807cbee190 (&dev->mutex){....}-{3:3}, at: manufacturer_show+0x26/0xa0 drivers/usb/core/sysfs.c:142 2 locks held by syz-executor.1/5109: #0: ffff88807f1120e0 (&type->s_umount_key#71){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline] ffff88807f1120e0 (&type->s_umount_key#71){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] ffff88807f1120e0 (&type->s_umount_key#71){+.+.}-{3:3}, at: deactivate_super+0xb5/0xf0 fs/super.c:505 #1: ffff8880305880e0 (&type->s_umount_key#33){++++}-{3:3}, at: ovl_sync_fs+0x11b/0x180 fs/overlayfs/super.c:231 2 locks held by kworker/1:3/5160: 2 locks held by kworker/1:5/5162: 3 locks held by kworker/0:6/5164: #0: ffff888015081948 ((wq_completion)events_power_efficient ){+.+.}-{0:0} , at: process_one_work kernel/workqueue.c:3197 [inline] , at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3303 #1: ffffc900038d7d00 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3198 [inline] ((reg_check_chans).work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3303 #2: ffffffff8f5dd948 (rtnl_mutex){+.+.}-{3:3} , at: reg_check_chans_work+0x91/0xea0 net/wireless/reg.c:2478 2 locks held by kworker/1:6/5165: 7 locks held by syz-executor.0/5970: #0: ffff88801dcd2420 (sb_writers#8){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2853 [inline] #0: ffff88801dcd2420 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x227/0xc90 fs/read_write.c:586 #1: ffff88801ed59888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1eb/0x500 fs/kernfs/file.c:325 #2: ffff8880234803c8 (kn->active #50 ){.+.+}-{0:0} , at: kernfs_fop_write_iter+0x20f/0x500 fs/kernfs/file.c:326 #3: ffffffff8eef0c68 ( nsim_bus_dev_list_lock ){+.+.}-{3:3} , at: del_device_store+0xfc/0x480 drivers/net/netdevsim/bus.c:216 #4: ffff88804a9810e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline] #4: ffff88804a9810e8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1093 [inline] #4: ffff88804a9810e8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xce/0x7c0 drivers/base/dd.c:1290 #5: ffff88804a982250 (&devlink->lock_key){+.+.}-{3:3}, at: nsim_drv_remove+0x50/0x160 drivers/net/netdevsim/dev.c:1672 #6: ffffffff8f5dd948 (rtnl_mutex){+.+.}-{3:3}, at: nsim_destroy+0x69/0x400 drivers/net/netdevsim/netdev.c:586 1 lock held by syz-executor.0/6090: #0: ffffffff8f5dd948 ( rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x10d0 net/core/rtnetlink.c:6591 1 lock held by syz-executor.0/6093: #0: ffffffff8f5dd948 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffffffff8f5dd948 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x10d0 net/core/rtnetlink.c:6591 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 30 Comm: khungtaskd Not tainted 6.9.0-rc5-next-20240426-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114 nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline] watchdog+0xfde/0x1020 kernel/hung_task.c:379 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Sending NMI from CPU 0 to CPUs 1: yealink 4-1:36.0: urb_ctl_callback - urb status -71 NMI backtrace for cpu 1 CPU: 1 PID: 5216 Comm: kworker/1:8 Not tainted 6.9.0-rc5-next-20240426-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Workqueue: wg-kex-wg1 wg_packet_handshake_receive_worker RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70 kernel/kcov.c:200 Code: 89 fb e8 23 00 00 00 48 8b 3d 9c 1d 44 0c 48 89 de 5b e9 f3 36 5a 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 48 8b 04 24 65 48 8b 0c 25 00 d5 03 00 65 8b 15 c0 7f RSP: 0018:ffffc90000a17518 EFLAGS: 00000046 RAX: 0000000000000002 RBX: ffffffff8bcb7866 RCX: 0000000000040000 RDX: 0000000000000002 RSI: ffffffff8f944aa0 RDI: 0000000000000025 RBP: ffffc90000a17610 R08: 0000000000000001 R09: ffffffff8b80a32a R10: 0000000000000002 R11: ffff888047870000 R12: ffffffff8bcb7865 R13: ffffffff8bcb7866 R14: dffffc0000000000 R15: 0000000000000025 FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000002d8a2000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: format_decode+0x4e5/0x1bb0 lib/vsprintf.c:2558 vsnprintf+0x14f/0x1da0 lib/vsprintf.c:2776 sprintf+0xda/0x120 lib/vsprintf.c:3028 print_time kernel/printk/printk.c:1327 [inline] info_print_prefix+0x16b/0x310 kernel/printk/printk.c:1353 record_print_text kernel/printk/printk.c:1402 [inline] printk_get_next_message+0x6da/0xbe0 kernel/printk/printk.c:2855 console_emit_next_record kernel/printk/printk.c:2895 [inline] console_flush_all+0x410/0xfd0 kernel/printk/printk.c:2994 console_unlock+0x13b/0x4d0 kernel/printk/printk.c:3063 vprintk_emit+0x5a6/0x770 kernel/printk/printk.c:2345 dev_vprintk_emit+0x2ae/0x330 drivers/base/core.c:4942 dev_printk_emit+0xdd/0x120 drivers/base/core.c:4953 _dev_err+0x122/0x170 drivers/base/core.c:5008 urb_ctl_callback+0x1d3/0x290 drivers/input/misc/yealink.c:454 __usb_hcd_giveback_urb+0x373/0x530 drivers/usb/core/hcd.c:1648 dummy_timer+0x830/0x45d0 drivers/usb/gadget/udc/dummy_hcd.c:1987 __run_hrtimer kernel/time/hrtimer.c:1687 [inline] __hrtimer_run_queues+0x5a5/0xd50 kernel/time/hrtimer.c:1751 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1813 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline] __sysvec_apic_timer_interrupt+0x110/0x3f0 arch/x86/kernel/apic/apic.c:1049 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:26 [inline] RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x11/0x70 kernel/kcov.c:207 Code: 5b e9 f3 36 5a 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 04 24 65 48 8b 0c 25 00 d5 03 00 <65> 8b 15 c0 7f 6d 7e f7 c2 00 01 ff 00 74 11 f7 c2 00 01 00 00 74 RSP: 0018:ffffc90000a18958 EFLAGS: 00000297 RAX: ffffffff8b037406 RBX: 0000000000000000 RCX: ffff888047870000 RDX: ffff888047870000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000a18a80 R08: ffffffff8b0373a8 R09: 0000000000000000 R10: ffffc90000a189e0 R11: fffff52000143140 R12: ffff8880613f0700 R13: ffff88802bf29280 R14: ffff88807cdf18f0 R15: ffff88807cdf0ca0 ieee80211_beacon_get_finish+0x416/0x870 net/mac80211/tx.c:5252 __ieee80211_beacon_get+0xf7e/0x15c0 ieee80211_beacon_get_tim+0xb4/0x320 net/mac80211/tx.c:5593 ieee80211_beacon_get include/net/mac80211.h:5562 [inline] mac80211_hwsim_beacon_tx+0x398/0x7e0 drivers/net/wireless/virtual/mac80211_hwsim.c:2302 __iterate_interfaces+0x223/0x4c0 net/mac80211/util.c:772 ieee80211_iterate_active_interfaces_atomic+0xd8/0x170 net/mac80211/util.c:808 mac80211_hwsim_beacon+0xd4/0x1f0 drivers/net/wireless/virtual/mac80211_hwsim.c:2332 __run_hrtimer kernel/time/hrtimer.c:1687 [inline] __hrtimer_run_queues+0x5a5/0xd50 kernel/time/hrtimer.c:1751 hrtimer_run_softirq+0x19a/0x2c0 kernel/time/hrtimer.c:1768 __do_softirq+0x2c6/0x980 kernel/softirq.c:554 do_softirq+0x11b/0x1e0 kernel/softirq.c:455 __local_bh_enable_ip+0x1bb/0x200 kernel/softirq.c:382 spin_unlock_bh include/linux/spinlock.h:396 [inline] ptr_ring_consume_bh include/linux/ptr_ring.h:367 [inline] wg_packet_handshake_receive_worker+0xeb2/0xf50 drivers/net/wireguard/receive.c:212 process_one_work kernel/workqueue.c:3222 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3303 worker_thread+0x86d/0xd70 kernel/workqueue.c:3384 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 yealink 4-1:36.0: urb_irq_callback - urb status -71 yealink 4-1:36.0: unexpected response 0 yealink 4-1:36.0: urb_ctl_callback - urb status -71 yealink 4-1:36.0: urb_irq_callback - urb status -71 yealink 4-1:36.0: unexpected response 0 yealink 4-1:36.0: urb_ctl_callback - urb status -71 yealink 4-1:36.0: urb_irq_callback - urb status -71 yealink 4-1:36.0: unexpected response 0 yealink 4-1:36.0: urb_ctl_callback - urb status -71 yealink 4-1:36.0: urb_irq_callback - urb status -71 yealink 4-1:36.0: unexpected response 0 yealink 4-1:36.0: urb_ctl_callback - urb status -71 yealink 4-1:36.0: urb_irq_callback - urb status -71 yealink 4-1:36.0: unexpected response 0 yealink 4-1:36.0: urb_ctl_callback - urb status -71