watchdog: BUG: soft lockup - CPU#0 stuck for 143s! [kworker/0:5:4800] Modules linked in: irq event stamp: 3153544 hardirqs last enabled at (3153543): [] ___slab_alloc+0x833/0x1790 mm/slub.c:3450 hardirqs last disabled at (3153544): [] sysvec_apic_timer_interrupt+0xe/0xb0 arch/x86/kernel/apic/apic.c:1043 softirqs last enabled at (3153208): [] softirq_handle_end kernel/softirq.c:400 [inline] softirqs last enabled at (3153208): [] __do_softirq+0x5bf/0x905 kernel/softirq.c:583 softirqs last disabled at (3153203): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last disabled at (3153203): [] __irq_exit_rcu kernel/softirq.c:633 [inline] softirqs last disabled at (3153203): [] irq_exit_rcu+0xaa/0x110 kernel/softirq.c:645 CPU: 0 PID: 4800 Comm: kworker/0:5 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_switch+0x4f/0x90 kernel/kcov.c:341 Code: 83 f8 10 75 2f 41 bd 03 00 00 00 4c 8b 75 00 31 db 4d 85 f6 74 1e 48 8b 74 dd 10 4c 89 e2 4c 89 ef 48 83 c3 01 48 8b 4c 24 28 8c fd ff ff 49 39 de 75 e2 5b 5d 41 5c 41 5d 41 5e c3 cc cc cc RSP: 0018:ffffc9000ad5e998 EFLAGS: 00000202 RAX: 0000000000000002 RBX: 0000000000000002 RCX: ffffffff8115250e RDX: 0000000000000001 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffffffff86c5a880 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000005 R12: 0000000000000001 R13: 0000000000000001 R14: 0000000000000003 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8881f6400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb0a15a4070 CR3: 000000000829e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: unwind_next_frame+0xebe/0x23a0 arch/x86/kernel/unwind_orc.c:641 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 poison_kmalloc_redzone mm/kasan/common.c:370 [inline] __kasan_kmalloc+0x8f/0xa0 mm/kasan/common.c:387 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slub.c:3966 [inline] __kmalloc_node_track_caller+0x216/0x430 mm/slub.c:3986 kmalloc_reserve+0xef/0x2c0 net/core/skbuff.c:599 __alloc_skb+0x164/0x380 net/core/skbuff.c:668 __netdev_alloc_skb+0x72/0x3f0 net/core/skbuff.c:732 netdev_alloc_skb include/linux/skbuff.h:3301 [inline] dev_alloc_skb include/linux/skbuff.h:3314 [inline] ath6kl_usb_post_recv_transfers.constprop.0+0x55/0x400 drivers/net/wireless/ath/ath6kl/usb.c:428 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 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 5249 Comm: syz-executor.4 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:lockdep_recursion_finish kernel/locking/lockdep.c:467 [inline] RIP: 0010:lock_acquire kernel/locking/lockdep.c:5756 [inline] RIP: 0010:lock_acquire+0x1b8/0x560 kernel/locking/lockdep.c:5719 Code: 41 0f 94 c1 48 89 c5 6a 00 45 0f b6 c9 ff b4 24 00 01 00 00 41 57 8b 4c 24 2c 8b 74 24 28 e8 ef ae ff ff 48 c7 c7 20 d2 c7 86 <48> 83 c4 28 e8 4f ac 5c 05 b8 ff ff ff ff 65 0f c1 05 ea 51 d1 7e RSP: 0018:ffffc9000153fcc0 EFLAGS: 00000086 RAX: 0000000000000001 RBX: 1ffff920002a7f9f RCX: ffffffff813040fe RDX: 0000000000000001 RSI: 0000000000000001 RDI: ffffffff86c7d220 RBP: 0000000000000200 R08: 0000000000000000 R09: fffffbfff194f3aa R10: ffffffff8ca79d57 R11: 0000000000000000 R12: 0000000000000001 R13: 0000000000000000 R14: ffff88811a6a1d60 R15: 0000000000000000 FS: 000055558f0a8480(0000) GS:ffff8881f6500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fff5d94cff8 CR3: 0000000135628000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __might_fault mm/memory.c:6220 [inline] __might_fault+0x11b/0x190 mm/memory.c:6213 rseq_get_rseq_cs kernel/rseq.c:161 [inline] rseq_ip_fixup kernel/rseq.c:281 [inline] __rseq_handle_notify_resume+0x14a/0x1090 kernel/rseq.c:329 rseq_handle_notify_resume include/linux/rseq.h:38 [inline] resume_user_mode_work include/linux/resume_user_mode.h:62 [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+0x181/0x250 kernel/entry/common.c:218 do_syscall_64+0xdc/0x260 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fdba1e62ee3 Code: f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 41 89 ca 41 f7 c1 ff 0f 00 00 75 14 b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 25 c3 0f 1f 40 00 48 c7 c0 b0 ff ff ff 64 c7 RSP: 002b:00007fffed4592e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: 00007fdba13e0000 RBX: 00007fdba1f911b8 RCX: 00007fdba1e62ee3 RDX: 0000000000000003 RSI: 0000000000200000 RDI: 00007fdba13e0000 RBP: 00007fdba13df000 R08: 00000000000000da R09: 0000000000000000 R10: 0000000000000011 R11: 0000000000000246 R12: 00007fffed4599c8 R13: 0000000000000003 R14: 00007fdba1f911b8 R15: 0000000000000002