watchdog: BUG: soft lockup - CPU#0 stuck for 144s! [kworker/0:6:5314] Modules linked in: irq event stamp: 14479786 hardirqs last enabled at (14479785): [] __local_bh_enable_ip+0x9e/0x120 kernel/softirq.c:455 hardirqs last disabled at (14479786): [] sysvec_apic_timer_interrupt+0xe/0xb0 arch/x86/kernel/apic/apic.c:1056 softirqs last enabled at (14479784): [] local_bh_disable include/linux/bottom_half.h:20 [inline] softirqs last enabled at (14479784): [] __alloc_skb+0x35d/0x410 net/core/skbuff.c:672 softirqs last disabled at (14479782): [] local_bh_disable include/linux/bottom_half.h:20 [inline] softirqs last disabled at (14479782): [] __alloc_skb+0x35d/0x410 net/core/skbuff.c:672 CPU: 0 UID: 0 PID: 5314 Comm: kworker/0:6 Not tainted syzkaller #0 PREEMPT(voluntary) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 Workqueue: usb_hub_wq hub_event RIP: 0010:unwind_next_frame+0xbf1/0x1ea0 arch/x86/kernel/unwind_orc.c:656 Code: 40 01 48 89 c7 48 c1 ef 03 0f b6 14 17 4c 89 c7 83 e7 07 40 38 fe 40 0f 9e c7 40 84 f6 40 0f 95 c6 40 84 f7 0f 85 0a 0d 00 00 <83> e0 07 38 c2 40 0f 9e c6 84 d2 0f 95 c0 40 84 c6 0f 85 f3 0c 00 RSP: 0018:ffffc900029b6998 EFLAGS: 00000246 RAX: ffffffff8b5684df RBX: 0000000000000001 RCX: ffffffff8b5684da RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: ffffc900029b6a50 R08: ffffffff8b5684de R09: 0000000000000001 R10: 0000000000000200 R11: 000000000002b05f R12: ffffc900029b6a58 R13: ffffc900029b6a08 R14: ffffc900029b7148 R15: ffffc900029b6a3c FS: 0000000000000000(0000) GS:ffff8882689d8000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe5120f8400 CR3: 00000000092a6000 CR4: 00000000003506f0 Call Trace: arch_stack_walk+0x94/0xf0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122 kasan_save_stack+0x30/0x50 mm/kasan/common.c:57 kasan_save_track+0x14/0x30 mm/kasan/common.c:78 poison_kmalloc_redzone mm/kasan/common.c:398 [inline] __kasan_kmalloc+0x8f/0xa0 mm/kasan/common.c:415 kasan_kmalloc include/linux/kasan.h:263 [inline] __do_kmalloc_node mm/slub.c:5657 [inline] __kmalloc_noprof+0x33e/0x990 mm/slub.c:5669 kmalloc_noprof include/linux/slab.h:961 [inline] usb_alloc_urb+0x66/0xa0 drivers/usb/core/urb.c:75 ath6kl_usb_post_recv_transfers.constprop.0+0x87/0x3d0 drivers/net/wireless/ath/ath6kl/usb.c:432 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+0x173/0x11b0 drivers/net/wireless/ath/ath6kl/core.c:97 ath6kl_usb_probe+0xcd0/0x13e0 drivers/net/wireless/ath/ath6kl/usb.c:1168 usb_probe_interface+0x303/0x8f0 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:581 [inline] really_probe+0x241/0xa60 drivers/base/dd.c:659 __driver_probe_device+0x1de/0x400 drivers/base/dd.c:801 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:831 __device_attach_driver+0x1df/0x340 drivers/base/dd.c:959 bus_for_each_drv+0x159/0x1e0 drivers/base/bus.c:500 __device_attach+0x1e4/0x4d0 drivers/base/dd.c:1031 device_initial_probe+0xaf/0xd0 drivers/base/dd.c:1086 bus_probe_device+0x64/0x160 drivers/base/bus.c:574 device_add+0x11d9/0x1950 drivers/base/core.c:3689 usb_set_configuration+0xd97/0x1c60 drivers/usb/core/message.c:2210 usb_generic_driver_probe+0xa1/0xe0 drivers/usb/core/generic.c:250 usb_probe_device+0xef/0x400 drivers/usb/core/driver.c:291 call_driver_probe drivers/base/dd.c:581 [inline] really_probe+0x241/0xa60 drivers/base/dd.c:659 __driver_probe_device+0x1de/0x400 drivers/base/dd.c:801 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:831 __device_attach_driver+0x1df/0x340 drivers/base/dd.c:959 bus_for_each_drv+0x159/0x1e0 drivers/base/bus.c:500 __device_attach+0x1e4/0x4d0 drivers/base/dd.c:1031 device_initial_probe+0xaf/0xd0 drivers/base/dd.c:1086 bus_probe_device+0x64/0x160 drivers/base/bus.c:574 device_add+0x11d9/0x1950 drivers/base/core.c:3689 usb_new_device.cold+0x685/0x115c drivers/usb/core/hub.c:2695 hub_port_connect drivers/usb/core/hub.c:5567 [inline] hub_port_connect_change drivers/usb/core/hub.c:5707 [inline] port_event drivers/usb/core/hub.c:5871 [inline] hub_event+0x314d/0x4af0 drivers/usb/core/hub.c:5953 process_one_work+0x9c2/0x1840 kernel/workqueue.c:3257 process_scheduled_works kernel/workqueue.c:3340 [inline] worker_thread+0x5da/0xe40 kernel/workqueue.c:3421 kthread+0x3b3/0x730 kernel/kthread.c:463 ret_from_fork+0x6c3/0xa20 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 10494 Comm: syz.3.1454 Not tainted syzkaller #0 PREEMPT(voluntary) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:lookup_object lib/debugobjects.c:423 [inline] RIP: 0010:debug_object_deactivate+0x1a0/0x3b0 lib/debugobjects.c:875 Code: 80 3c 28 00 0f 85 8e 01 00 00 48 8b 1b 48 85 db 0f 84 32 01 00 00 48 8d 7b 18 41 83 c4 01 48 89 f8 48 c1 e8 03 42 80 3c 28 00 <0f> 85 4c 01 00 00 4c 3b 73 18 75 c2 48 b8 00 00 00 00 00 fc ff df RSP: 0018:ffffc900001a8d60 EFLAGS: 00000046 RAX: 1ffff110268f78f8 RBX: ffff8881347bc7a8 RCX: 0000000000000006 RDX: ffffffff93d8c7b8 RSI: 0000000000000004 RDI: ffff8881347bc7c0 RBP: ffffc900001a8e40 R08: 0000000000000001 R09: fffff5200003519a R10: 0000000000000003 R11: 0000000000000000 R12: 0000000000000001 R13: dffffc0000000000 R14: ffffc9000147fd70 R15: 1ffff920000351ae FS: 00007f27d1c776c0(0000) GS:ffff888268ad8000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f27d35c1000 CR3: 000000013b09c000 CR4: 00000000003506f0 Call Trace: debug_hrtimer_deactivate kernel/time/hrtimer.c:443 [inline] debug_deactivate kernel/time/hrtimer.c:483 [inline] __run_hrtimer kernel/time/hrtimer.c:1745 [inline] __hrtimer_run_queues+0x395/0x990 kernel/time/hrtimer.c:1841 hrtimer_interrupt+0x397/0x8c0 kernel/time/hrtimer.c:1903 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1045 [inline] __sysvec_apic_timer_interrupt+0x109/0x3c0 arch/x86/kernel/apic/apic.c:1062 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline] sysvec_apic_timer_interrupt+0x8a/0xb0 arch/x86/kernel/apic/apic.c:1056 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:console_trylock_spinning kernel/printk/printk.c:2037 [inline] RIP: 0010:vprintk_emit+0x553/0x6b0 kernel/printk/printk.c:2425 Code: 00 4d 85 ed 0f 85 1b 01 00 00 e8 98 56 20 00 9c 5d 81 e5 00 02 00 00 31 ff 48 89 ee e8 66 51 20 00 48 85 ed 0f 85 27 01 00 00 78 56 20 00 45 31 c9 41 b8 01 00 00 00 31 c9 48 8d 05 00 00 00 RSP: 0018:ffffc90016a3fc50 EFLAGS: 00000287 RAX: 000000000003a68e RBX: 0000000000000045 RCX: ffffc90004741000 RDX: 0000000000080000 RSI: ffffffff8190eca4 RDI: ffff8881132457c0 RBP: 0000000000000000 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff92002d47f8c R13: 0000000000000200 R14: ffff88810dfb57c0 R15: ffffc90016a3fd18 _printk+0xcf/0x110 kernel/printk/printk.c:2451 usb_gadget_register_driver_owner.cold+0x58/0xd0 drivers/usb/gadget/udc/core.c:1729 raw_ioctl_run drivers/usb/gadget/legacy/raw_gadget.c:596 [inline] raw_ioctl+0x1a85/0x2b80 drivers/usb/gadget/legacy/raw_gadget.c:1307 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl fs/ioctl.c:583 [inline] __x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:583 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xc9/0x570 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f27d321a94b Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00 RSP: 002b:00007f27d1c74f00 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f27d321a94b RDX: 0000000000000000 RSI: 0000000000005501 RDI: 0000000000000004 RBP: 00007f27d1c75fd0 R08: 0000000000000001 R09: 00000000ffffffff R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000200000000000 R14: 0000000000000005 R15: 0000000000000868