watchdog: BUG: soft lockup - CPU#0 stuck for 143s! [kworker/0:4:4835] Modules linked in: irq event stamp: 4090325 hardirqs last enabled at (4090324): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (4090324): [] _raw_spin_unlock_irqrestore+0x52/0x80 kernel/locking/spinlock.c:194 hardirqs last disabled at (4090325): [] sysvec_apic_timer_interrupt+0xe/0xb0 arch/x86/kernel/apic/apic.c:1043 softirqs last enabled at (4090154): [] softirq_handle_end kernel/softirq.c:400 [inline] softirqs last enabled at (4090154): [] __do_softirq+0x5bf/0x905 kernel/softirq.c:583 softirqs last disabled at (4090317): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last disabled at (4090317): [] __irq_exit_rcu kernel/softirq.c:633 [inline] softirqs last disabled at (4090317): [] irq_exit_rcu+0xaa/0x110 kernel/softirq.c:645 CPU: 0 PID: 4835 Comm: kworker/0:4 Not tainted 6.9.0-rc5-syzkaller-00104-ga160e1202ca3 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Workqueue: usb_hub_wq hub_event RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x23/0x60 kernel/kcov.c:207 Code: 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 35 <8b> 82 4c 15 00 00 85 c0 74 2b 8b 82 28 15 00 00 83 f8 02 75 20 48 RSP: 0018:ffffc90000007470 EFLAGS: 00000202 RAX: 0000000000000101 RBX: 0000000000000001 RCX: ffffffff810dc1ff RDX: ffff88811b5c5700 RSI: ffffffff810dc208 RDI: 0000000000000001 RBP: ffffc90000007510 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000005 R12: ffffc90000007480 R13: ffffffff813ec8d0 R14: ffffc90000007540 R15: ffff88811b5c5700 FS: 0000000000000000(0000) GS:ffff8881f6400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3b94f3e440 CR3: 000000000829e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: arch_stack_walk+0xf8/0x170 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_mempool_unpoison_object+0x106/0x180 mm/kasan/common.c:535 kasan_mempool_unpoison_object include/linux/kasan.h:339 [inline] napi_skb_cache_get+0x103/0x210 net/core/skbuff.c:357 __napi_build_skb+0x14/0x50 net/core/skbuff.c:527 __napi_alloc_skb+0x3ab/0x6f0 net/core/skbuff.c:846 napi_alloc_skb include/linux/skbuff.h:3358 [inline] page_to_skb+0x150/0xce0 drivers/net/virtio_net.c:619 receive_mergeable drivers/net/virtio_net.c:1699 [inline] receive_buf+0x113f/0x65b0 drivers/net/virtio_net.c:1820 virtnet_receive drivers/net/virtio_net.c:2126 [inline] virtnet_poll+0xa9b/0x18c0 drivers/net/virtio_net.c:2219 __napi_poll.constprop.0+0xb7/0x550 net/core/dev.c:6638 napi_poll net/core/dev.c:6707 [inline] net_rx_action+0x9ad/0xf10 net/core/dev.c:6822 __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 common_interrupt+0xab/0xd0 arch/x86/kernel/irq.c:247 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693 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: 0018:ffffc9000405ea90 EFLAGS: 00000246 RAX: 0000000000000002 RBX: ffffffff89c55254 RCX: ffffc9000b416000 RDX: ffff88811b5c5700 RSI: ffffffff81150b2a RDI: 0000000000000006 RBP: ffffffff89c55274 R08: 0000000000000006 R09: ffffffff8398d3e3 R10: ffffffff8398d33d R11: 0000000000000005 R12: ffffffff8398d3e3 R13: ffffffff8398d33d R14: dffffc0000000000 R15: ffffffff89c55250 __orc_find+0x7a/0x130 arch/x86/kernel/unwind_orc.c:100 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 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+0x1f4/0x400 mm/slub.c:3979 kmalloc include/linux/slab.h:632 [inline] usb_alloc_urb+0x69/0xa0 drivers/usb/core/urb.c:75 ath6kl_usb_post_recv_transfers.constprop.0+0x84/0x400 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+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: 6682 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:__sanitizer_cov_trace_switch+0x3b/0x90 kernel/kcov.c:341 Code: 53 48 8b 46 08 48 83 f8 20 74 6b 77 48 48 83 f8 08 74 5b 48 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 e8 8c RSP: 0018:ffffc900000af690 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 0000000000000006 RCX: ffffffff81151d11 RDX: ffff88811c0bba00 RSI: 0000000000000007 RDI: 0000000000000001 RBP: ffffffff86c5a940 R08: 0000000000000001 R09: 0000000000000007 R10: 0000000000000005 R11: 0000000000000001 R12: 0000000000000005 R13: 0000000000000001 R14: 0000000000000008 R15: ffffc900000af775 FS: 00007ffbe8137380(0000) GS:ffff8881f6500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffbe81b219c CR3: 000000011ddd8000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: unwind_next_frame+0x6c1/0x23a0 arch/x86/kernel/unwind_orc.c:515 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 mt_free_one lib/maple_tree.c:172 [inline] mas_destroy+0x1e2/0x960 lib/maple_tree.c:5612 mas_nomem+0x47/0x230 lib/maple_tree.c:6284 mas_store_gfp+0xc5/0x1e0 lib/maple_tree.c:5463 vma_iter_store_gfp mm/internal.h:1303 [inline] do_brk_flags+0x97e/0x1d60 mm/mmap.c:3170 __do_sys_brk+0x6c6/0xb10 mm/mmap.c:259 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: 0033:0x7ffbe828fc7c Code: 1a 64 c7 03 01 00 00 00 eb 11 64 44 89 23 31 f6 5b 31 ff 5d 41 5c e9 41 ff ff ff 5b 83 c8 ff 5d 41 5c c3 b8 0c 00 00 00 0f 05 <48> 8b 15 d5 61 0d 00 45 31 c0 48 89 02 48 39 c7 76 12 48 8b 05 73 RSP: 002b:00007ffcc2ce0d48 EFLAGS: 00000206 ORIG_RAX: 000000000000000c RAX: ffffffffffffffda RBX: 0000000000021000 RCX: 00007ffbe828fc7c RDX: 00007ffbe836e1b8 RSI: 00007ffbe8366b00 RDI: 0000559e09111000 RBP: 00007ffbe8366aa0 R08: 0000000000000000 R09: 00007ffbe8366d80 R10: 0000000000000037 R11: 0000000000000206 R12: 0000559e090f0000 R13: 0000000000000290 R14: 0000000000001000 R15: 0000000000000000