watchdog: BUG: soft lockup - CPU#0 stuck for 144s! [kworker/0:1:8] Modules linked in: irq event stamp: 6638462 hardirqs last enabled at (6638461): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (6638461): [] _raw_spin_unlock_irqrestore+0x52/0x80 kernel/locking/spinlock.c:194 hardirqs last disabled at (6638462): [] sysvec_apic_timer_interrupt+0xe/0xb0 arch/x86/kernel/apic/apic.c:1043 softirqs last enabled at (6637144): [] softirq_handle_end kernel/softirq.c:400 [inline] softirqs last enabled at (6637144): [] __do_softirq+0x5bf/0x905 kernel/softirq.c:583 softirqs last disabled at (6637139): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last disabled at (6637139): [] __irq_exit_rcu kernel/softirq.c:633 [inline] softirqs last disabled at (6637139): [] irq_exit_rcu+0xaa/0x110 kernel/softirq.c:645 CPU: 0 PID: 8 Comm: kworker/0:1 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+0x58/0x60 kernel/kcov.c:225 Code: 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 83 c0 01 48 39 d0 73 07 48 89 01 48 89 34 c1 cc cc cc cc 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc9000008ea00 EFLAGS: 00000246 RAX: 0000000000040000 RBX: ffffc9000008f5c8 RCX: ffffc9000a962000 RDX: 0000000000040000 RSI: ffffffff81150a89 RDI: ffffc9000008f5c8 RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000005 R12: ffffc9000008f5c8 R13: 0000000000000001 R14: 0000000000000001 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8881f6400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f84e9f2c988 CR3: 000000000829e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __read_once_word_nocheck+0x9/0x20 include/asm-generic/rwonce.h:67 deref_stack_reg arch/x86/kernel/unwind_orc.c:406 [inline] unwind_next_frame+0x1bba/0x23a0 arch/x86/kernel/unwind_orc.c:648 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: 5892 Comm: kworker/u8:3 Not tainted 6.9.0-rc5-syzkaller-00104-ga160e1202ca3 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:86 [inline] RIP: 0010:memory_is_nonzero mm/kasan/generic.c:104 [inline] RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:129 [inline] RIP: 0010:memory_is_poisoned mm/kasan/generic.c:161 [inline] RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline] RIP: 0010:kasan_check_range+0xfb/0x1a0 mm/kasan/generic.c:189 Code: d2 74 1e 41 83 e2 07 49 39 d1 75 0a 45 3a 11 b8 01 00 00 00 7c 0b 44 89 c2 e8 01 eb ff ff 83 f0 01 5b 5d 41 5c c3 cc cc cc cc <48> 85 d2 74 4f 48 01 ea eb 09 48 83 c0 01 48 39 d0 74 41 80 38 00 RSP: 0018:ffffc9000ba97560 EFLAGS: 00000083 RAX: fffffbfff194f3a6 RBX: fffffbfff194f3a7 RCX: ffffffff813040fe RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffffff8ca79d30 RBP: fffffbfff194f3a6 R08: 0000000000000000 R09: fffffbfff194f3a6 R10: ffffffff8ca79d37 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000000 R14: ffff888189d727e0 R15: 0000000000000083 FS: 0000000000000000(0000) GS:ffff8881f6500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffb456600d0 CR3: 000000013468c000 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 check_wait_context kernel/locking/lockdep.c:4773 [inline] __lock_acquire+0x3f2/0x3b30 kernel/locking/lockdep.c:5087 lock_acquire kernel/locking/lockdep.c:5754 [inline] lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5719 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:351 [inline] fast_dput fs/dcache.c:761 [inline] dput.part.0+0x766/0x9b0 fs/dcache.c:839 dput+0x1f/0x30 fs/dcache.c:835 path_put fs/namei.c:561 [inline] terminate_walk+0x1a8/0x680 fs/namei.c:685 path_openat+0x1de4/0x2990 fs/namei.c:3800 do_filp_open+0x1dc/0x430 fs/namei.c:3826 do_open_execat+0xfa/0x3f0 fs/exec.c:930 open_exec+0x45/0x80 fs/exec.c:973 load_elf_binary+0x4df/0x4e10 fs/binfmt_elf.c:893 search_binary_handler fs/exec.c:1778 [inline] exec_binprm fs/exec.c:1820 [inline] bprm_execve fs/exec.c:1872 [inline] bprm_execve+0x703/0x19a0 fs/exec.c:1848 kernel_execve+0x3cf/0x4e0 fs/exec.c:2039 call_usermodehelper_exec_async+0x255/0x4c0 kernel/umh.c:110 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244