watchdog: BUG: soft lockup - CPU#0 stuck for 144s! [kworker/0:1:8] Modules linked in: irq event stamp: 3792614 hardirqs last enabled at (3792613): [] ___slab_alloc+0x833/0x1790 mm/slub.c:3450 hardirqs last disabled at (3792614): [] sysvec_apic_timer_interrupt+0xe/0xb0 arch/x86/kernel/apic/apic.c:1043 softirqs last enabled at (3791908): [] softirq_handle_end kernel/softirq.c:400 [inline] softirqs last enabled at (3791908): [] __do_softirq+0x5bf/0x905 kernel/softirq.c:583 softirqs last disabled at (3791903): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last disabled at (3791903): [] __irq_exit_rcu kernel/softirq.c:633 [inline] softirqs last disabled at (3791903): [] 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:check_kcov_mode kernel/kcov.c:173 [inline] RIP: 0010:write_comp_data+0x18/0x90 kernel/kcov.c:236 Code: 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 49 89 d2 49 89 f8 49 89 f1 65 48 8b 15 ff fb b0 7e 65 8b 05 00 fc b0 7e 00 01 ff 00 74 0f f6 c4 01 74 59 8b 82 4c 15 00 00 85 c0 74 4f RSP: 0018:ffffc9000008e990 EFLAGS: 00000206 RAX: 0000000000000001 RBX: 0000000000000003 RCX: ffffffff8115250e RDX: ffff88810168d700 RSI: 0000000000000004 RDI: 0000000000000001 RBP: ffffffff86c5a880 R08: 0000000000000001 R09: 0000000000000004 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: 0000001b30c21000 CR3: 000000000829e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __sanitizer_cov_trace_switch+0x54/0x90 kernel/kcov.c:341 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: 4813 Comm: kworker/1:4 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: events_power_efficient gc_worker RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:87 [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+0x10e/0x1a0 mm/kasan/generic.c:189 Code: 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 74 f2 eb b2 41 bc 08 00 00 00 45 29 dc 49 8d 14 2c eb 0c RSP: 0018:ffffc9000b14f970 EFLAGS: 00000086 RAX: fffffbfff194f3a4 RBX: fffffbfff194f3a5 RCX: ffffffff8130f4ea RDX: fffffbfff194f3a5 RSI: 0000000000000008 RDI: ffffffff8ca79d20 RBP: fffffbfff194f3a4 R08: 0000000000000000 R09: fffffbfff194f3a4 R10: ffffffff8ca79d27 R11: 0000000000000003 R12: ffffed10232cdc31 R13: ffff88811966e190 R14: ffff88811966e1e0 R15: 0000000000000004 FS: 0000000000000000(0000) GS:ffff8881f6500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f044a2cd6a8 CR3: 0000000135da4000 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] __lock_acquire+0xeba/0x3b30 kernel/locking/lockdep.c:5107 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] gc_worker+0x24d/0x17e0 net/netfilter/nf_conntrack_core.c:1488 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