watchdog: BUG: soft lockup - CPU#1 stuck for 144s! [kworker/1:3:4812] Modules linked in: irq event stamp: 3473012 hardirqs last enabled at (3473011): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (3473011): [] _raw_spin_unlock_irqrestore+0x52/0x80 kernel/locking/spinlock.c:194 hardirqs last disabled at (3473012): [] sysvec_apic_timer_interrupt+0xe/0xb0 arch/x86/kernel/apic/apic.c:1043 softirqs last enabled at (3472100): [] softirq_handle_end kernel/softirq.c:400 [inline] softirqs last enabled at (3472100): [] __do_softirq+0x5bf/0x905 kernel/softirq.c:583 softirqs last disabled at (3472087): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last disabled at (3472087): [] __irq_exit_rcu kernel/softirq.c:633 [inline] softirqs last disabled at (3472087): [] irq_exit_rcu+0xaa/0x110 kernel/softirq.c:645 CPU: 1 PID: 4812 Comm: kworker/1:3 Not tainted 6.9.0-rc5-syzkaller-00104-ga160e1202ca3 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Workqueue: usb_hub_wq hub_event RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:200 Code: be b0 01 00 00 e8 a0 ff ff ff 31 c0 c3 cc cc cc cc 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 65 48 8b 15 24 f5 b0 7e 65 8b 05 25 f5 b0 7e a9 00 01 RSP: 0018:ffffc900022de420 EFLAGS: 00000287 RAX: 0000000000040000 RBX: ffffc900022de4a8 RCX: ffffc9000a8f1000 RDX: ffffffff89f96f0e RSI: ffffffff81151946 RDI: ffffffff8a5debe8 RBP: 0000000000000001 R08: 0000000000000004 R09: 0000000000009c7e R10: 000000000005c000 R11: 0000000000000005 R12: ffffffff819c7e7d R13: ffffffff89f96f08 R14: 00000000000257ee R15: ffffc900022de4dd FS: 0000000000000000(0000) GS:ffff8881f6500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb3b5c385e4 CR3: 000000000829e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: orc_find arch/x86/kernel/unwind_orc.c:227 [inline] unwind_next_frame+0x318/0x23a0 arch/x86/kernel/unwind_orc.c:494 arch_stack_walk+0x100/0x170 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122 save_stack+0x162/0x1f0 mm/page_owner.c:156 __set_page_owner+0x8a/0x560 mm/page_owner.c:325 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x2d4/0x350 mm/page_alloc.c:1534 prep_new_page mm/page_alloc.c:1541 [inline] get_page_from_freelist+0x139c/0x3470 mm/page_alloc.c:3317 __alloc_pages+0x21e/0x2290 mm/page_alloc.c:4575 __alloc_pages_node include/linux/gfp.h:238 [inline] alloc_pages_node include/linux/gfp.h:261 [inline] alloc_slab_page mm/slub.c:2175 [inline] allocate_slab mm/slub.c:2338 [inline] new_slab+0xcc/0x3a0 mm/slub.c:2391 ___slab_alloc+0x66d/0x1790 mm/slub.c:3525 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3610 __slab_alloc_node mm/slub.c:3663 [inline] slab_alloc_node mm/slub.c:3835 [inline] kmalloc_trace+0x2ca/0x300 mm/slub.c:3992 kmalloc include/linux/slab.h:628 [inline] dummy_urb_enqueue+0x8d/0x8a0 drivers/usb/gadget/udc/dummy_hcd.c:1271 usb_hcd_submit_urb+0x2d1/0x2090 drivers/usb/core/hcd.c:1533 usb_submit_urb+0x87c/0x1730 drivers/usb/core/urb.c:581 ath6kl_usb_post_recv_transfers.constprop.0+0x201/0x400 drivers/net/wireless/ath/ath6kl/usb.c:450 ath6kl_usb_start_recv_pipes drivers/net/wireless/ath/ath6kl/usb.c:498 [inline] hif_start drivers/net/wireless/ath/ath6kl/usb.c:703 [inline] ath6kl_usb_power_on+0x8e/0x160 drivers/net/wireless/ath/ath6kl/usb.c:1062 ath6kl_hif_power_on drivers/net/wireless/ath/ath6kl/hif-ops.h:136 [inline] ath6kl_core_init+0x17c/0x11a0 drivers/net/wireless/ath/ath6kl/core.c:97 ath6kl_usb_probe+0xcd2/0x1450 drivers/net/wireless/ath/ath6kl/usb.c:1168 usb_probe_interface+0x309/0x9d0 drivers/usb/core/driver.c:399 call_driver_probe drivers/base/dd.c:578 [inline] really_probe+0x23e/0xa90 drivers/base/dd.c:656 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:798 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:828 __device_attach_driver+0x1df/0x310 drivers/base/dd.c:956 bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:457 __device_attach+0x1e8/0x4b0 drivers/base/dd.c:1028 bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:532 device_add+0x1188/0x1ab0 drivers/base/core.c:3720 usb_set_configuration+0x10cb/0x1c50 drivers/usb/core/message.c:2210 usb_generic_driver_probe+0xb1/0x110 drivers/usb/core/generic.c:254 usb_probe_device+0xec/0x3e0 drivers/usb/core/driver.c:294 call_driver_probe drivers/base/dd.c:578 [inline] really_probe+0x23e/0xa90 drivers/base/dd.c:656 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:798 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:828 __device_attach_driver+0x1df/0x310 drivers/base/dd.c:956 bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:457 __device_attach+0x1e8/0x4b0 drivers/base/dd.c:1028 bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:532 device_add+0x1188/0x1ab0 drivers/base/core.c:3720 usb_new_device+0xd90/0x1a10 drivers/usb/core/hub.c:2652 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+0x2e66/0x4f50 drivers/usb/core/hub.c:5903 process_one_work+0x9a9/0x1ac0 kernel/workqueue.c:3254 process_scheduled_works kernel/workqueue.c:3335 [inline] worker_thread+0x6c8/0xf70 kernel/workqueue.c:3416 kthread+0x2c1/0x3a0 kernel/kthread.c:388 ret_from_fork+0x45/0x80 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: cdc_wdm 2-1:1.0: Stall on int endpoint NMI backtrace for cpu 0 CPU: 0 PID: 2519 Comm: syz-executor.2 Not tainted 6.9.0-rc5-syzkaller-00104-ga160e1202ca3 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 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+0xc/0x60 kernel/kcov.c:207 Code: c3 cc cc cc cc 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 65 48 8b 15 24 f5 b0 7e <65> 8b 05 25 f5 b0 7e a9 00 01 ff 00 48 8b 34 24 74 0f f6 c4 01 74 RSP: 0000:ffffc90000006148 EFLAGS: 00000097 RAX: 0000000000000002 RBX: 0000000000003433 RCX: ffffffff8685ee8d RDX: ffff8881346b3a00 RSI: 0000000000000063 RDI: 0000000000000007 RBP: ffffc90000006208 R08: 0000000000000007 R09: 0000000000000063 R10: 0000000000000002 R11: 00000000000d4fd0 R12: 0000000000000002 R13: 000000000000000a R14: ffffc9008000654f R15: 0000000000000000 FS: 0000555588564480(0000) GS:ffff8881f6400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020001180 CR3: 0000000109760000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: put_dec_trunc8+0x2a7/0x370 lib/vsprintf.c:233 number+0x9ac/0xb80 lib/vsprintf.c:511 vsnprintf+0x92a/0x1880 lib/vsprintf.c:2890 sprintf+0xcd/0x110 lib/vsprintf.c:3028 print_time kernel/printk/printk.c:1330 [inline] info_print_prefix+0x25c/0x350 kernel/printk/printk.c:1356 record_print_text+0x141/0x400 kernel/printk/printk.c:1405 printk_get_next_message+0x2a6/0x670 kernel/printk/printk.c:2840 console_emit_next_record kernel/printk/printk.c:2880 [inline] console_flush_all+0x3b2/0xd70 kernel/printk/printk.c:2979 console_unlock+0xae/0x290 kernel/printk/printk.c:3048 vprintk_emit kernel/printk/printk.c:2348 [inline] vprintk_emit+0x11a/0x5a0 kernel/printk/printk.c:2303 dev_vprintk_emit drivers/base/core.c:4950 [inline] dev_printk_emit+0xfb/0x140 drivers/base/core.c:4961 __dev_printk+0xf5/0x270 drivers/base/core.c:4973 _dev_err+0xe5/0x120 drivers/base/core.c:5016 wdm_int_callback+0x3eb/0xaa0 drivers/usb/class/cdc-wdm.c:266 __usb_hcd_giveback_urb+0x364/0x5c0 drivers/usb/core/hcd.c:1648 usb_hcd_giveback_urb+0x396/0x450 drivers/usb/core/hcd.c:1732 dummy_timer+0x17f6/0x3900 drivers/usb/gadget/udc/dummy_hcd.c:1987 __run_hrtimer kernel/time/hrtimer.c:1692 [inline] __hrtimer_run_queues+0x20c/0xcc0 kernel/time/hrtimer.c:1756 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1818 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline] __sysvec_apic_timer_interrupt+0x10f/0x450 arch/x86/kernel/apic/apic.c:1049 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0x3e/0xb0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:__orc_find+0x4/0x130 arch/x86/kernel/unwind_orc.c:85 Code: 8b 03 5b c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 41 57 41 56 <49> 89 fe 41 55 41 54 49 89 cc 55 53 89 d3 48 83 ec 18 48 89 7c 24 RSP: 0000:ffffc90000007178 EFLAGS: 00000202 RAX: 0000000000028d69 RBX: ffffc90000007210 RCX: ffffffff81aa19d4 RDX: 0000000000000001 RSI: ffffffff89faafea RDI: ffffffff89aad8c8 RBP: 0000000000000001 R08: 0000000000000004 R09: 000000000000aa19 R10: 000000000005c000 R11: 0000000000000007 R12: ffffffff81aa19d4 R13: ffffffff89faafea R14: 0000000000028d69 R15: ffffc90000007245 orc_find arch/x86/kernel/unwind_orc.c:227 [inline] unwind_next_frame+0x335/0x23a0 arch/x86/kernel/unwind_orc.c:494 arch_stack_walk+0x100/0x170 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:579 poison_slab_object mm/kasan/common.c:240 [inline] __kasan_slab_free+0xfe/0x190 mm/kasan/common.c:256 kasan_slab_free include/linux/kasan.h:184 [inline] slab_free_hook mm/slub.c:2106 [inline] slab_free mm/slub.c:4280 [inline] kmem_cache_free+0x10f/0x360 mm/slub.c:4344 kfree_skbmem+0x10e/0x200 net/core/skbuff.c:1159 __kfree_skb net/core/skbuff.c:1217 [inline] kfree_skb_reason+0x13a/0x210 net/core/skbuff.c:1252 packet_rcv+0x166/0x1520 net/packet/af_packet.c:2230 dev_queue_xmit_nit+0x851/0xbb0 net/core/dev.c:2296 xmit_one net/core/dev.c:3527 [inline] dev_hard_start_xmit+0x56/0x790 net/core/dev.c:3547 sch_direct_xmit+0x18e/0x840 net/sched/sch_generic.c:343 __dev_xmit_skb net/core/dev.c:3760 [inline] __dev_queue_xmit+0x12b9/0x40f0 net/core/dev.c:4307 arp_send_dst net/ipv4/arp.c:320 [inline] arp_send_dst+0x1a6/0x200 net/ipv4/arp.c:301 arp_solicit+0x697/0x1080 net/ipv4/arp.c:392 neigh_probe+0xc2/0x110 net/core/neighbour.c:1075 neigh_timer_handler+0x409/0xf90 net/core/neighbour.c:1157 call_timer_fn+0x1a0/0x610 kernel/time/timer.c:1793 expire_timers kernel/time/timer.c:1844 [inline] __run_timers+0x74b/0xaf0 kernel/time/timer.c:2418 __run_timer_base kernel/time/timer.c:2429 [inline] __run_timer_base kernel/time/timer.c:2422 [inline] run_timer_base+0x111/0x190 kernel/time/timer.c:2438 run_timer_softirq+0x1a/0x40 kernel/time/timer.c:2448 __do_softirq+0x208/0x905 kernel/softirq.c:554 invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu kernel/softirq.c:633 [inline] irq_exit_rcu+0xaa/0x110 kernel/softirq.c:645 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:__sanitizer_cov_trace_pc+0x33/0x60 kernel/kcov.c:207 Code: f5 b0 7e 65 8b 05 25 f5 b0 7e a9 00 01 ff 00 48 8b 34 24 74 0f f6 c4 01 74 35 8b 82 4c 15 00 00 85 c0 74 2b 8b 82 28 15 00 00 <83> f8 02 75 20 48 8b 8a 30 15 00 00 8b 92 2c 15 00 00 48 8b 01 48 RSP: 0000:ffffc9000154f540 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffffffff89aaf144 RCX: ffffffff81150b74 RDX: ffff8881346b3a00 RSI: ffffffff81150b13 RDI: 0000000000000006 RBP: ffffffff89aaf154 R08: 0000000000000006 R09: ffffffff81ab7ae2 R10: ffffffff81ab7a78 R11: 0000000000000001 R12: ffffffff81ab7ae2 R13: ffffffff81ab7a78 R14: dffffc0000000000 R15: ffffffff89aaf14c __orc_find+0x63/0x130 arch/x86/kernel/unwind_orc.c:104 orc_find arch/x86/kernel/unwind_orc.c:227 [inline] unwind_next_frame+0x335/0x23a0 arch/x86/kernel/unwind_orc.c:494 arch_stack_walk+0x100/0x170 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122 save_stack+0x162/0x1f0 mm/page_owner.c:156 __reset_page_owner+0x8d/0x400 mm/page_owner.c:302 reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1141 [inline] free_unref_page_prepare+0x50c/0xae0 mm/page_alloc.c:2347 free_unref_page+0x33/0x2d0 mm/page_alloc.c:2487 __put_partials+0x14c/0x170 mm/slub.c:2906 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x4e/0x140 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x192/0x1e0 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x4e/0x70 mm/kasan/common.c:322 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slub.c:3798 [inline] slab_alloc_node mm/slub.c:3845 [inline] kmem_cache_alloc+0x131/0x2e0 mm/slub.c:3852 kmem_cache_zalloc include/linux/slab.h:739 [inline] alloc_empty_file+0x73/0x1e0 fs/file_table.c:202 path_openat+0xdb/0x2990 fs/namei.c:3785 do_filp_open+0x1dc/0x430 fs/namei.c:3826 do_sys_openat2+0x17a/0x1e0 fs/open.c:1406 do_sys_open fs/open.c:1421 [inline] __do_sys_openat fs/open.c:1437 [inline] __se_sys_openat fs/open.c:1432 [inline] __x64_sys_openat+0x175/0x210 fs/open.c:1432 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f706d718901 Code: 44 24 18 31 c0 41 83 e2 40 75 3e 89 f0 25 00 00 41 00 3d 00 00 41 00 74 30 89 f2 b8 01 01 00 00 48 89 fe bf 9c ff ff ff 0f 05 <48> 3d 00 f0 ff ff 77 3f 48 8b 54 24 18 64 48 2b 14 25 28 00 00 00 RSP: 002b:00007ffe3ebafc80 EFLAGS: 00000287 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000018 RCX: 00007f706d718901 RDX: 0000000000090800 RSI: 00007f706d76445d RDI: 00000000ffffff9c RBP: 00007ffe3ebafd4c R08: 000000000000007b R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000287 R12: 0000000000000000 R13: 000000000001d717 R14: 000000000001d717 R15: 0000000000000000