watchdog: BUG: soft lockup - CPU#0 stuck for 143s! [kworker/0:2:728] Modules linked in: irq event stamp: 3608210 hardirqs last enabled at (3608209): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (3608209): [] _raw_spin_unlock_irqrestore+0x52/0x80 kernel/locking/spinlock.c:194 hardirqs last disabled at (3608210): [] sysvec_apic_timer_interrupt+0xe/0xb0 arch/x86/kernel/apic/apic.c:1043 softirqs last enabled at (3608140): [] softirq_handle_end kernel/softirq.c:400 [inline] softirqs last enabled at (3608140): [] __do_softirq+0x5bf/0x905 kernel/softirq.c:583 softirqs last disabled at (3608135): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last disabled at (3608135): [] __irq_exit_rcu kernel/softirq.c:633 [inline] softirqs last disabled at (3608135): [] irq_exit_rcu+0xaa/0x110 kernel/softirq.c:645 CPU: 0 PID: 728 Comm: kworker/0:2 Not tainted 6.9.0-rc5-syzkaller-00104-ga160e1202ca3 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Workqueue: usb_hub_wq hub_event RIP: 0010:unwind_next_frame+0x1b1c/0x23a0 arch/x86/kernel/unwind_orc.c:648 Code: 89 ea 49 89 c4 48 c1 ea 03 48 b8 00 00 00 00 00 fc ff df 80 3c 02 00 0f 84 e0 f5 ff ff 4c 89 ef e8 c9 81 8f 00 e9 d3 f5 ff ff 1f 9f 3d 00 49 8d 7c 24 02 48 ba 00 00 00 00 00 fc ff df 48 89 RSP: 0018:ffffc90001e8ea18 EFLAGS: 00000246 RAX: 0000000000000002 RBX: ffffc90001e8ea98 RCX: ffffffff8115250e RDX: ffff88810af3ba00 RSI: 0000000000000004 RDI: 0000000000000001 RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000004 R10: 0000000000000001 R11: 0000000000000005 R12: ffffffff89ef3024 R13: ffffc90001e8ff30 R14: 0000000000000001 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8881f6400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffc17a53da8 CR3: 0000000115cde000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: 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 unpoison_slab_object mm/kasan/common.c:312 [inline] __kasan_slab_alloc+0x6e/0x70 mm/kasan/common.c:338 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_node+0x159/0x310 mm/slub.c:3888 __alloc_skb+0x2b1/0x380 net/core/skbuff.c:658 __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: 6011 Comm: modprobe 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:__kasan_check_read+0x8/0x20 mm/kasan/shadow.c:31 Code: 60 48 c7 c7 60 a7 f6 87 5b 5d 41 5c e9 91 f6 8e ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 0c 24 <89> f6 31 d2 e9 2f f1 ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f RSP: 0018:ffffc90004cb7568 EFLAGS: 00000047 RAX: 0000000000000000 RBX: 0000000000000020 RCX: ffffffff813040fe RDX: 1ffff11020ee3165 RSI: 0000000000000008 RDI: ffffffff8ca79d20 RBP: ffffffff8ca7cc38 R08: 0000000000000000 R09: fffffbfff194f3a4 R10: ffffffff8ca79d27 R11: 0000000000000003 R12: ffffed1020ee3151 R13: 0000000000000020 R14: ffff888107718b08 R15: 0000000000000002 FS: 0000000000000000(0000) GS:ffff8881f6500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc6ec65f440 CR3: 0000000107292000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: instrument_atomic_read include/linux/instrumented.h:68 [inline] _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline] hlock_class+0x4e/0x130 kernel/locking/lockdep.c:228 __lock_acquire+0xc5d/0x3b30 kernel/locking/lockdep.c:5134 lock_acquire kernel/locking/lockdep.c:5754 [inline] lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5719 rcu_lock_acquire include/linux/rcupdate.h:329 [inline] rcu_read_lock include/linux/rcupdate.h:781 [inline] page_ext_get+0x3a/0x310 mm/page_ext.c:508 page_table_check_clear.part.0+0x36/0x7f0 mm/page_table_check.c:72 page_table_check_clear mm/page_table_check.c:68 [inline] __page_table_check_pte_clear+0x31c/0x570 mm/page_table_check.c:158 page_table_check_pte_clear include/linux/page_table_check.h:49 [inline] ptep_get_and_clear_full arch/x86/include/asm/pgtable.h:1295 [inline] get_and_clear_full_ptes include/linux/pgtable.h:634 [inline] zap_present_folio_ptes mm/memory.c:1479 [inline] zap_present_ptes mm/memory.c:1563 [inline] zap_pte_range mm/memory.c:1605 [inline] zap_pmd_range mm/memory.c:1722 [inline] zap_pud_range mm/memory.c:1751 [inline] zap_p4d_range mm/memory.c:1772 [inline] unmap_page_range+0x1b3b/0x30b0 mm/memory.c:1793 unmap_single_vma+0x194/0x2b0 mm/memory.c:1839 unmap_vmas+0x22f/0x490 mm/memory.c:1883 exit_mmap+0x1c1/0xb90 mm/mmap.c:3267 __mmput kernel/fork.c:1346 [inline] mmput+0xdb/0x420 kernel/fork.c:1368 exit_mm kernel/exit.c:569 [inline] do_exit+0x999/0x2b80 kernel/exit.c:865 do_group_exit+0xd3/0x2a0 kernel/exit.c:1027 __do_sys_exit_group kernel/exit.c:1038 [inline] __se_sys_exit_group kernel/exit.c:1036 [inline] __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1036 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: 0033:0x7fc6ec71da90 Code: Unable to access opcode bytes at 0x7fc6ec71da66. RSP: 002b:00007fffc17d8028 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007fc6ec80e860 RCX: 00007fc6ec71da90 RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001 RBP: 00007fc6ec80e860 R08: 00007fffc17d7ea0 R09: 00007fffc17d7f80 R10: 00007fffc17d7ee0 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007fc6ec812658 R15: 0000000000000001