INFO: task hwrng:754 blocked for more than 149 seconds. Not tainted 6.10.0-syzkaller-01193-g408323581b72 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:hwrng state:D stack:27568 pid:754 tgid:754 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5407 [inline] __schedule+0x1800/0x4a60 kernel/sched/core.c:6748 __schedule_loop kernel/sched/core.c:6825 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6840 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6897 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 hwrng_fillfn+0xf0/0x3c0 drivers/char/hw_random/core.c:495 kthread+0x2f2/0x390 kernel/kthread.c:389 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Showing all locks held in the system: 1 lock held by pool_workqueue_/3: #0: ffffffff8e3393b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:296 [inline] (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 kernel/rcu/tree_exp.h:958 1 lock held by khungtaskd/30: #0: ffffffff8e333fe0 (rcu_read_lock ){....}-{1:2} , at: rcu_lock_acquire include/linux/rcupdate.h:327 [inline] , at: rcu_read_lock include/linux/rcupdate.h:839 [inline] , at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614 3 locks held by kworker/1:1/46: #0: ffff888015078948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline] #0: ffff888015078948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312 #1: ffffc90000b67d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline] #1: ffffc90000b67d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312 #2: ffffffff8f5ec488 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:276 1 lock held by hwrng/754: #0: ffffffff8eb38148 ( reading_mutex){+.+.}-{3:3} , at: hwrng_fillfn+0xf0/0x3c0 drivers/char/hw_random/core.c:495 3 locks held by kworker/0:3/928: 2 locks held by getty/4852: #0: ffff88802b8010a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3} , at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2211 13 locks held by kworker/0:7/5220: 3 locks held by kworker/0:1/8774: 5 locks held by kworker/u8:21/13489: 3 locks held by kworker/1:5/26989: #0: ffff888015078948 ( (wq_completion)events ){+.+.}-{0:0} , at: process_one_work kernel/workqueue.c:3206 [inline] , at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312 #1: ffffc900036dfd00 (deferred_process_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline] #1: ffffc900036dfd00 (deferred_process_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312 #2: ffffffff8f5ec488 (rtnl_mutex){+.+.}-{3:3}, at: switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:104 1 lock held by syz-executor/29033: #0: ffffffff8f5ec488 (rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:698 [inline] (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3e/0x1b0 drivers/net/tun.c:3500 1 lock held by syz-executor/29635: #0: ffffffff8f5ec488 (rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:698 [inline] #0: ffffffff8f5ec488 (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3e/0x1b0 drivers/net/tun.c:3500 1 lock held by syz-executor/29706: #0: ffffffff8f5ec488 (rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:698 [inline] (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3e/0x1b0 drivers/net/tun.c:3500 2 locks held by syz-executor/29816: #0: ffffffff8f5ec488 (rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:698 [inline] (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3e/0x1b0 drivers/net/tun.c:3500 #1: ffffffff8f680268 (flowtable_lock){+.+.}-{3:3}, at: nf_flow_table_cleanup+0x23/0xb0 net/netfilter/nf_flow_table_core.c:593 1 lock held by syz.1.5199/30691: #0: ffffffff8f5ec488 ( rtnl_mutex ){+.+.}-{3:3} , at: tun_detach drivers/net/tun.c:698 [inline] , at: tun_chr_close+0x3e/0x1b0 drivers/net/tun.c:3500 1 lock held by syz.0.5204/30709: 1 lock held by syz-executor/30749: #0: ffffffff8f5ec488 (rtnl_mutex ){+.+.}-{3:3} , at: rtnl_lock net/core/rtnetlink.c:79 [inline] , at: rtnetlink_rcv_msg+0x842/0x1180 net/core/rtnetlink.c:6632 1 lock held by syz-executor/30751: #0: ffffffff8f5ec488 ( rtnl_mutex ){+.+.}-{3:3} , at: rtnl_lock net/core/rtnetlink.c:79 [inline] , at: rtnetlink_rcv_msg+0x842/0x1180 net/core/rtnetlink.c:6632 1 lock held by syz-executor/30753: #0: ffffffff8f5ec488 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffffffff8f5ec488 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x1180 net/core/rtnetlink.c:6632 1 lock held by syz-executor/30757: #0: ffffffff8f5ec488 (rtnl_mutex ){+.+.}-{3:3} , at: rtnl_lock net/core/rtnetlink.c:79 [inline] , at: rtnetlink_rcv_msg+0x842/0x1180 net/core/rtnetlink.c:6632 1 lock held by syz-executor/30759: #0: ffffffff8f5ec488 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffffffff8f5ec488 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x1180 net/core/rtnetlink.c:6632 1 lock held by syz-executor/30763: #0: ffffffff8f5ec488 (rtnl_mutex ){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] ){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x1180 net/core/rtnetlink.c:6632 1 lock held by syz-executor/30790: #0: ffffffff8f5ec488 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffffffff8f5ec488 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x1180 net/core/rtnetlink.c:6632 1 lock held by syz-executor/30792: #0: ffffffff8f5ec488 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] ffffffff8f5ec488 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x1180 net/core/rtnetlink.c:6632 1 lock held by syz-executor/30796: #0: ffffffff8f5ec488 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x1180 net/core/rtnetlink.c:6632 1 lock held by syz-executor/30798: #0: ffffffff8f5ec488 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffffffff8f5ec488 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x1180 net/core/rtnetlink.c:6632 1 lock held by syz-executor/30808: #0: ffffffff8f5ec488 ( rtnl_mutex ){+.+.}-{3:3} , at: rtnl_lock net/core/rtnetlink.c:79 [inline] , at: rtnetlink_rcv_msg+0x842/0x1180 net/core/rtnetlink.c:6632 1 lock held by syz-executor/30810: #0: ffffffff8f5ec488 ( rtnl_mutex ){+.+.}-{3:3} , at: rtnl_lock net/core/rtnetlink.c:79 [inline] , at: rtnetlink_rcv_msg+0x842/0x1180 net/core/rtnetlink.c:6632 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 30 Comm: khungtaskd Not tainted 6.10.0-syzkaller-01193-g408323581b72 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 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:162 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline] watchdog+0xfde/0x1020 kernel/hung_task.c:379 kthread+0x2f2/0x390 kernel/kthread.c:389 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Sending NMI from CPU 1 to CPUs 0: yealink 6-1:36.0: urb_irq_callback - urb status -71 NMI backtrace for cpu 0 CPU: 0 PID: 5220 Comm: kworker/0:7 Not tainted 6.10.0-syzkaller-01193-g408323581b72 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 Workqueue: usb_hub_wq hub_event RIP: 0010:skip_atoi+0x1/0xd0 lib/vsprintf.c:165 Code: 8c f8 d9 ff ff 4c 89 f7 e8 7c 1f 7b f6 e9 eb d9 ff ff e8 52 22 06 00 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 <41> 57 41 56 41 55 41 54 53 49 89 fe 49 bd 00 00 00 00 00 fc ff df RSP: 0018:ffffc900000062b0 EFLAGS: 00000046 RAX: ffffffff8b807525 RBX: 00000000fffffffb RCX: ffff8880288fda00 RDX: 0000000000010101 RSI: 00000000fffffffb RDI: ffffc90000006340 RBP: ffffc900000063b0 R08: ffffffff8b807162 R09: ffffffff8b806fda R10: 0000000000000005 R11: ffff8880288fda00 R12: ffffffff8bcb8142 R13: ffffc90000006340 R14: dffffc0000000000 R15: 0000000000000035 FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000006e610000 CR4: 0000000000350ef0 Call Trace: format_decode+0xb15/0x1bb0 lib/vsprintf.c:2592 vsnprintf+0x14f/0x1da0 lib/vsprintf.c:2776 sprintf+0xda/0x120 lib/vsprintf.c:3028 print_time kernel/printk/printk.c:1330 [inline] info_print_prefix+0x16b/0x310 kernel/printk/printk.c:1356 record_print_text kernel/printk/printk.c:1405 [inline] printk_get_next_message+0x6da/0xbe0 kernel/printk/printk.c:2840 console_emit_next_record kernel/printk/printk.c:2880 [inline] console_flush_all+0x410/0xfd0 kernel/printk/printk.c:2979 console_unlock+0x13b/0x4d0 kernel/printk/printk.c:3048 vprintk_emit+0x5a6/0x770 kernel/printk/printk.c:2348 dev_vprintk_emit+0x2ae/0x330 drivers/base/core.c:4909 dev_printk_emit+0xdd/0x120 drivers/base/core.c:4920 _dev_err+0x122/0x170 drivers/base/core.c:4975 urb_irq_callback+0x37e/0x5b0 drivers/input/misc/yealink.c:416 __usb_hcd_giveback_urb+0x42e/0x6e0 drivers/usb/core/hcd.c:1650 dummy_timer+0x830/0x45d0 drivers/usb/gadget/udc/dummy_hcd.c:1987 __run_hrtimer kernel/time/hrtimer.c:1689 [inline] __hrtimer_run_queues+0x59d/0xd50 kernel/time/hrtimer.c:1753 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1815 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline] __sysvec_apic_timer_interrupt+0x112/0x3f0 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:lock_acquire+0x264/0x550 kernel/locking/lockdep.c:5758 Code: 2b 00 74 08 4c 89 f7 e8 8a 93 89 00 f6 44 24 61 02 0f 85 85 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25 RSP: 0018:ffffc90000007780 EFLAGS: 00000206 RAX: 0000000000000001 RBX: 1ffff92000000efc RCX: 0000000000000001 RDX: dffffc0000000000 RSI: ffffffff8bcacdc0 RDI: ffffffff8c202920 RBP: ffffc900000078e0 R08: ffffffff92fb35c7 R09: 1ffffffff25f66b8 R10: dffffc0000000000 R11: fffffbfff25f66b9 R12: 1ffff92000000ef8 R13: dffffc0000000000 R14: ffffc900000077e0 R15: 0000000000000246 rcu_lock_acquire include/linux/rcupdate.h:327 [inline] rcu_read_lock include/linux/rcupdate.h:839 [inline] sta_info_get_bss+0x6c/0x320 net/mac80211/sta_info.c:236 ieee80211_rx_for_interface+0x102/0x3d0 net/mac80211/rx.c:5160 __ieee80211_rx_handle_packet net/mac80211/rx.c:5324 [inline] ieee80211_rx_list+0x2cde/0x3780 net/mac80211/rx.c:5459 ieee80211_rx_napi+0x18a/0x3c0 net/mac80211/rx.c:5482 ieee80211_rx include/net/mac80211.h:5093 [inline] ieee80211_handle_queued_frames+0xe7/0x1e0 net/mac80211/main.c:438 tasklet_action_common+0x323/0x4d0 kernel/softirq.c:785 handle_softirqs+0x2c6/0x970 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:phys_addr_valid arch/x86/mm/physaddr.h:7 [inline] RIP: 0010:__phys_addr+0x6d/0x170 arch/x86/mm/physaddr.c:28 Code: 48 89 de e8 f5 f0 53 00 49 39 de 0f 87 00 01 00 00 48 c7 c0 a1 9a ad 8f 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 <84> c0 0f 85 a0 00 00 00 44 0f b6 3d e4 2a 6b 0e bf 40 00 00 00 44 RSP: 0018:ffffc900030de660 EFLAGS: 00000212 RAX: 0000000000000000 RBX: ffff8880e9eda000 RCX: dffffc0000000000 RDX: ffffc90014058000 RSI: ffff8880e9eda000 RDI: 0000000069eda000 RBP: ffff888069eda000 R08: ffffffff81426f8b R09: 1ffffffff25f66bd R10: dffffc0000000000 R11: fffffbfff25f66be R12: ffff888069eda000 R13: ffffea0000000000 R14: 0000000069eda000 R15: 0000000000000000 virt_to_folio include/linux/mm.h:1318 [inline] virt_to_slab mm/kasan/../slab.h:204 [inline] qlink_to_cache mm/kasan/quarantine.c:131 [inline] qlist_free_all+0x3e/0x140 mm/kasan/quarantine.c:176 kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:322 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slub.c:3940 [inline] slab_alloc_node mm/slub.c:4002 [inline] __do_kmalloc_node mm/slub.c:4122 [inline] kmalloc_node_track_caller_noprof+0x1cd/0x440 mm/slub.c:4143 kstrdup+0x3a/0x80 mm/util.c:62 __kernfs_new_node+0x9d/0x870 fs/kernfs/dir.c:620 kernfs_new_node+0x137/0x240 fs/kernfs/dir.c:700 kernfs_create_dir_ns+0x43/0x120 fs/kernfs/dir.c:1061 sysfs_create_dir_ns+0x189/0x3a0 fs/sysfs/dir.c:59 create_dir lib/kobject.c:73 [inline] kobject_add_internal+0x435/0x8d0 lib/kobject.c:240 kobject_add_varg lib/kobject.c:374 [inline] kobject_add+0x152/0x220 lib/kobject.c:426 device_add+0x4e5/0xbf0 drivers/base/core.c:3617 cdev_device_add+0x1ec/0x3a0 fs/char_dev.c:556 evdev_connect+0x349/0x3f0 drivers/input/evdev.c:1386 input_attach_handler drivers/input/input.c:1064 [inline] input_register_device+0xcf5/0x1090 drivers/input/input.c:2470 usb_probe+0xe83/0x1340 drivers/input/misc/yealink.c:964 usb_probe_interface+0x647/0xbb0 drivers/usb/core/driver.c:399 really_probe+0x2ba/0xad0 drivers/base/dd.c:656 __driver_probe_device+0x1a2/0x390 drivers/base/dd.c:798 driver_probe_device+0x50/0x430 drivers/base/dd.c:828 __device_attach_driver+0x2d6/0x530 drivers/base/dd.c:956 bus_for_each_drv+0x250/0x2e0 drivers/base/bus.c:457 __device_attach+0x333/0x520 drivers/base/dd.c:1028 bus_probe_device+0x189/0x260 drivers/base/bus.c:532 device_add+0x856/0xbf0 drivers/base/core.c:3679 usb_set_configuration+0x1976/0x1fb0 drivers/usb/core/message.c:2210 usb_generic_driver_probe+0x88/0x140 drivers/usb/core/generic.c:254 usb_probe_device+0x1ba/0x380 drivers/usb/core/driver.c:294 really_probe+0x2ba/0xad0 drivers/base/dd.c:656 __driver_probe_device+0x1a2/0x390 drivers/base/dd.c:798 driver_probe_device+0x50/0x430 drivers/base/dd.c:828 __device_attach_driver+0x2d6/0x530 drivers/base/dd.c:956 bus_for_each_drv+0x250/0x2e0 drivers/base/bus.c:457 __device_attach+0x333/0x520 drivers/base/dd.c:1028 bus_probe_device+0x189/0x260 drivers/base/bus.c:532 device_add+0x856/0xbf0 drivers/base/core.c:3679 usb_new_device+0x104a/0x19a0 drivers/usb/core/hub.c:2651 hub_port_connect drivers/usb/core/hub.c:5521 [inline] hub_port_connect_change drivers/usb/core/hub.c:5661 [inline] port_event drivers/usb/core/hub.c:5821 [inline] hub_event+0x2d6a/0x5150 drivers/usb/core/hub.c:5903 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0xa2e/0x1830 kernel/workqueue.c:3312 worker_thread+0x86d/0xd40 kernel/workqueue.c:3390 kthread+0x2f2/0x390 kernel/kthread.c:389 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 yealink 6-1:36.0: unexpected response 0 yealink 6-1:36.0: urb_ctl_callback - urb status -71 yealink 6-1:36.0: urb_irq_callback - urb status -71 yealink 6-1:36.0: unexpected response 0 yealink 6-1:36.0: urb_ctl_callback - urb status -71 yealink 6-1:36.0: urb_irq_callback - urb status -71 yealink 6-1:36.0: unexpected response 0 yealink 6-1:36.0: urb_ctl_callback - urb status -71 yealink 6-1:36.0: urb_irq_callback - urb status -71 yealink 6-1:36.0: unexpected response 0 yealink 6-1:36.0: urb_ctl_callback - urb status -71 yealink 6-1:36.0: urb_irq_callback - urb status -71 yealink 6-1:36.0: unexpected response 0 yealink 6-1:36.0: urb_ctl_callback - urb status -71 yealink 6-1:36.0: urb_irq_callback - urb status -71 yealink 6-1:36.0: unexpected response 0 yealink 6-1:36.0: urb_ctl_callback - urb status -71 yealink 6-1:36.0: urb_irq_callback - urb status -71 yealink 6-1:36.0: unexpected response 0 yealink 6-1:36.0: urb_ctl_callback - urb status -71 yealink 6-1:36.0: urb_irq_callback - urb status -71 yealink 6-1:36.0: unexpected response 0 yealink 6-1:36.0: urb_ctl_callback - urb status -71