kworker/dying (323) used greatest stack depth: 23728 bytes left watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.3:5148] Modules linked in: irq event stamp: 5366745 hardirqs last enabled at (5366744): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (5366745): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1094 softirqs last enabled at (5280210): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (5280213): [] asm_call_irq_on_stack+0x12/0x20 CPU: 0 PID: 5148 Comm: syz-executor.3 Not tainted 5.10.224 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__orc_find+0x89/0xf0 arch/x86/kernel/unwind_orc.c:52 Code: 8d 5c 85 00 48 89 d8 48 c1 e8 03 42 0f b6 14 38 48 89 d8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 50 48 63 03 48 01 d8 48 39 c1 <73> b0 4c 8d 63 fc 49 39 ec 73 b3 4d 29 ee 49 c1 fe 02 4b 8d 04 76 RSP: 0018:ffff88806ce09830 EFLAGS: 00000216 RAX: ffffffff83c315d5 RBX: ffffffff85924040 RCX: ffffffff83c315f0 RDX: 0000000000000000 RSI: ffffffff85d1473e RDI: ffffffff85924004 RBP: ffffffff85924040 R08: ffffffff85d1473e R09: ffffffff85d1479e R10: 0000000000032042 R11: 1ffff1100d9c1317 R12: ffffffff85924040 R13: ffffffff85924004 R14: ffffffff8592403c R15: dffffc0000000000 FS: 00007f647448c700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555555997c58 CR3: 00000000197f4000 CR4: 0000000000350ef0 Call Trace: orc_find arch/x86/kernel/unwind_orc.c:178 [inline] unwind_next_frame+0x2b3/0x1a90 arch/x86/kernel/unwind_orc.c:448 arch_stack_walk+0x83/0xf0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:121 __save_stack_trace mm/kmemleak.c:563 [inline] create_object.isra.0+0x372/0xa20 mm/kmemleak.c:618 kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline] slab_post_alloc_hook mm/slab.h:534 [inline] slab_alloc_node mm/slub.c:2896 [inline] kmem_cache_alloc_node+0x169/0x330 mm/slub.c:2932 __alloc_skb+0x6d/0x5b0 net/core/skbuff.c:199 skb_copy+0x183/0x350 net/core/skbuff.c:1529 mac80211_hwsim_tx_frame_no_nl.isra.0+0xb1d/0x13d0 drivers/net/wireless/mac80211_hwsim.c:1499 mac80211_hwsim_tx_frame+0x152/0x1e0 drivers/net/wireless/mac80211_hwsim.c:1716 mac80211_hwsim_beacon_tx+0x494/0x940 drivers/net/wireless/mac80211_hwsim.c:1770 __iterate_interfaces+0x1f0/0x550 net/mac80211/util.c:792 ieee80211_iterate_active_interfaces_atomic+0x71/0x1c0 net/mac80211/util.c:828 mac80211_hwsim_beacon+0xd1/0x1d0 drivers/net/wireless/mac80211_hwsim.c:1793 __run_hrtimer kernel/time/hrtimer.c:1584 [inline] __hrtimer_run_queues+0x632/0xb40 kernel/time/hrtimer.c:1648 hrtimer_run_softirq+0x148/0x310 kernel/time/hrtimer.c:1665 __do_softirq+0x1b8/0x7c9 kernel/softirq.c:298 asm_call_irq_on_stack+0x12/0x20 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline] do_softirq_own_stack+0x80/0xa0 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:393 [inline] __irq_exit_rcu kernel/softirq.c:423 [inline] irq_exit_rcu+0x114/0x1b0 kernel/softirq.c:435 sysvec_apic_timer_interrupt+0x43/0xa0 arch/x86/kernel/apic/apic.c:1094 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:__sanitizer_cov_trace_switch+0x4b/0x80 kernel/kcov.c:321 Code: 28 bf 03 00 00 00 4c 8b 65 00 31 db 4d 85 e4 74 18 48 8b 74 dd 10 48 8b 4c 24 18 48 83 c3 01 e8 3b fe ff ff 49 39 dc 75 e8 5b <5d> 41 5c e9 7d a0 df 02 bf 07 00 00 00 48 83 f8 40 74 c9 5b 5d 41 RSP: 0018:ffff8880471178b8 EFLAGS: 00000246 RAX: 0000000000000002 RBX: 0000000000000002 RCX: ffffffff81ec8c69 RDX: 0000000000000002 RSI: ffff888046041a40 RDI: 0000000000000005 RBP: ffffffff845b9680 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000001 R12: 0000000000000002 R13: ffff888045714000 R14: ffff88801cf0d900 R15: 0000000000000000 io_async_cancel_one io_uring/io_uring.c:6351 [inline] io_try_cancel_userdata+0x1f9/0x6d0 io_uring/io_uring.c:6373 io_async_cancel io_uring/io_uring.c:6411 [inline] io_issue_sqe+0x29d7/0x77b0 io_uring/io_uring.c:6790 __io_queue_sqe+0x90/0x9d0 io_uring/io_uring.c:7059 io_queue_sqe io_uring/io_uring.c:7110 [inline] io_submit_sqe io_uring/io_uring.c:7287 [inline] io_submit_sqes+0x44aa/0x8610 io_uring/io_uring.c:7393 __do_sys_io_uring_enter+0x6b5/0x18c0 io_uring/io_uring.c:9920 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7f6476f37b19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f647448c188 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa RAX: ffffffffffffffda RBX: 00007f647704b020 RCX: 00007f6476f37b19 RDX: 0000000000000000 RSI: 00000000000058af RDI: 0000000000000003 RBP: 00007f6476f91f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff0b79c8bf R14: 00007f647448c300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 5129 Comm: syz-executor.0 Not tainted 5.10.224 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:hash_64_generic include/linux/hash.h:81 [inline] RIP: 0010:lookup_chain_cache kernel/locking/lockdep.c:3619 [inline] RIP: 0010:lookup_chain_cache_add kernel/locking/lockdep.c:3642 [inline] RIP: 0010:validate_chain kernel/locking/lockdep.c:3697 [inline] RIP: 0010:__lock_acquire+0x165f/0x5b00 kernel/locking/lockdep.c:4955 Code: 20 66 81 e3 ff 1f 0f b7 db be 08 00 00 00 48 89 d8 48 c1 f8 06 48 8d 3c c5 e0 86 86 86 e8 89 8e 45 00 48 0f a3 1d b1 a4 5f 05 <48> bb eb 83 b5 80 46 86 c8 61 0f 92 c0 48 0f af 5c 24 08 48 c1 eb RSP: 0018:ffff88806cf09638 EFLAGS: 00000047 RAX: 0000000000000001 RBX: 0000000000000056 RCX: ffffffff8126e227 RDX: fffffbfff0d0d0de RSI: 0000000000000008 RDI: ffffffff868686e8 RBP: 0000000000000040 R08: 0000000000000000 R09: ffffffff868686ef R10: fffffbfff0d0d0dd R11: 0000000000000001 R12: ffff8880202d9a40 R13: ffff8880202da3d8 R14: 0000000000000002 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055e36b258678 CR3: 000000001cab6000 CR4: 0000000000350ee0 Call Trace: lock_acquire kernel/locking/lockdep.c:5566 [inline] lock_acquire+0x197/0x470 kernel/locking/lockdep.c:5531 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x36/0x60 kernel/locking/spinlock.c:159 hrtimer_interrupt+0xcf/0x9b0 kernel/time/hrtimer.c:1691 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1083 [inline] __sysvec_apic_timer_interrupt+0xfb/0x310 arch/x86/kernel/apic/apic.c:1100 run_sysvec_on_irqstack_cond arch/x86/include/asm/irq_stack.h:91 [inline] sysvec_apic_timer_interrupt+0x3e/0xa0 arch/x86/kernel/apic/apic.c:1094 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:cpu_relax arch/x86/include/asm/vdso/processor.h:19 [inline] RIP: 0010:virt_spin_lock arch/x86/include/asm/qspinlock.h:100 [inline] RIP: 0010:queued_spin_lock_slowpath+0x122/0x8c0 kernel/locking/qspinlock.c:326 Code: 00 00 00 65 48 2b 04 25 28 00 00 00 0f 85 09 07 00 00 48 81 c4 88 00 00 00 5b 5d 41 5c 41 5d 41 5e 41 5f e9 10 a4 f8 02 f3 90 73 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e1 00 00 RSP: 0018:ffff88806cf09a38 EFLAGS: 00000202 RAX: 0000000000000000 RBX: ffffffff87a04180 RCX: ffffffff81279b37 RDX: fffffbfff0f40831 RSI: 0000000000000004 RDI: ffffffff87a04180 RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff87a04183 R10: fffffbfff0f40830 R11: 0000000000000001 R12: 0000000000000003 R13: fffffbfff0f40830 R14: 0000000000000001 R15: 1ffff1100d9e1348 queued_spin_lock include/asm-generic/qspinlock.h:85 [inline] do_raw_spin_lock+0x1dc/0x260 kernel/locking/spinlock_debug.c:113 spin_lock include/linux/spinlock.h:354 [inline] mac80211_hwsim_tx_frame_no_nl.isra.0+0x695/0x13d0 drivers/net/wireless/mac80211_hwsim.c:1450 mac80211_hwsim_tx_frame+0x152/0x1e0 drivers/net/wireless/mac80211_hwsim.c:1716 mac80211_hwsim_beacon_tx+0x494/0x940 drivers/net/wireless/mac80211_hwsim.c:1770 __iterate_interfaces+0x1f0/0x550 net/mac80211/util.c:792 ieee80211_iterate_active_interfaces_atomic+0x71/0x1c0 net/mac80211/util.c:828 mac80211_hwsim_beacon+0xd1/0x1d0 drivers/net/wireless/mac80211_hwsim.c:1793 __run_hrtimer kernel/time/hrtimer.c:1584 [inline] __hrtimer_run_queues+0x632/0xb40 kernel/time/hrtimer.c:1648 hrtimer_run_softirq+0x148/0x310 kernel/time/hrtimer.c:1665 __do_softirq+0x1b8/0x7c9 kernel/softirq.c:298 asm_call_irq_on_stack+0x12/0x20 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline] do_softirq_own_stack+0x80/0xa0 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:393 [inline] __irq_exit_rcu kernel/softirq.c:423 [inline] irq_exit_rcu+0x114/0x1b0 kernel/softirq.c:435 sysvec_apic_timer_interrupt+0x43/0xa0 arch/x86/kernel/apic/apic.c:1094 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:arch_atomic_dec_and_test arch/x86/include/asm/atomic.h:123 [inline] RIP: 0010:atomic_dec_and_test include/asm-generic/atomic-instrumented.h:749 [inline] RIP: 0010:page_ref_dec_and_test include/linux/page_ref.h:148 [inline] RIP: 0010:put_page_testzero include/linux/mm.h:708 [inline] RIP: 0010:release_pages+0x162/0xc20 mm/swap.c:914 Code: 5f 34 31 ff 89 de e8 bd cb e9 ff 85 db 0f 84 50 07 00 00 e8 60 d2 e9 ff be 04 00 00 00 4c 89 e7 e8 b3 9d 15 00 f0 41 ff 0c 24 <41> 0f 94 c4 31 ff 44 89 e6 e8 50 cb e9 ff 45 84 e4 0f 84 b2 05 00 RSP: 0018:ffff88804592f630 EFLAGS: 00000206 RAX: 0000000000000001 RBX: 0000000000000004 RCX: ffffffff8156d30d RDX: fffff940001b20b7 RSI: 0000000000000004 RDI: ffffea0000d905b4 RBP: 00000000000001f7 R08: 0000000000000001 R09: ffffea0000d905b7 R10: fffff940001b20b6 R11: 0000000000000001 R12: ffffea0000d905b4 R13: dffffc0000000000 R14: ffff888008be0fd0 R15: ffffea0000d90580 tlb_batch_pages_flush mm/mmu_gather.c:49 [inline] tlb_flush_mmu_free mm/mmu_gather.c:240 [inline] tlb_flush_mmu+0xe9/0x6e0 mm/mmu_gather.c:247 zap_pte_range mm/memory.c:1355 [inline] zap_pmd_range mm/memory.c:1404 [inline] zap_pud_range mm/memory.c:1433 [inline] zap_p4d_range mm/memory.c:1454 [inline] unmap_page_range+0x17d9/0x1fe0 mm/memory.c:1475 unmap_single_vma+0x198/0x300 mm/memory.c:1520 unmap_vmas+0x16d/0x300 mm/memory.c:1552 exit_mmap+0x27f/0x4f0 mm/mmap.c:3235 __mmput kernel/fork.c:1101 [inline] mmput+0xca/0x340 kernel/fork.c:1122 exit_mm kernel/exit.c:536 [inline] do_exit+0xa96/0x2600 kernel/exit.c:847 do_group_exit+0x125/0x310 kernel/exit.c:982 get_signal+0x4bc/0x2350 kernel/signal.c:2759 arch_do_signal_or_restart+0x2b7/0x1990 arch/x86/kernel/signal.c:805 handle_signal_work kernel/entry/common.c:145 [inline] exit_to_user_mode_loop kernel/entry/common.c:169 [inline] exit_to_user_mode_prepare+0x10f/0x190 kernel/entry/common.c:199 syscall_exit_to_user_mode+0x38/0x1d0 kernel/entry/common.c:274 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7f5dea396b19 Code: Unable to access opcode bytes at RIP 0x7f5dea396aef. RSP: 002b:00007f5de78eb188 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa RAX: 000000000000030e RBX: 00007f5dea4aa020 RCX: 00007f5dea396b19 RDX: 0000000000000000 RSI: 00000000000058af RDI: 0000000000000003 RBP: 00007f5dea3f0f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdfeb70a8f R14: 00007f5de78eb300 R15: 0000000000022000 Bluetooth: hci0: command 0x0409 tx timeout ---------------- Code disassembly (best guess): 0: 8d 5c 85 00 lea 0x0(%rbp,%rax,4),%ebx 4: 48 89 d8 mov %rbx,%rax 7: 48 c1 e8 03 shr $0x3,%rax b: 42 0f b6 14 38 movzbl (%rax,%r15,1),%edx 10: 48 89 d8 mov %rbx,%rax 13: 83 e0 07 and $0x7,%eax 16: 83 c0 03 add $0x3,%eax 19: 38 d0 cmp %dl,%al 1b: 7c 04 jl 0x21 1d: 84 d2 test %dl,%dl 1f: 75 50 jne 0x71 21: 48 63 03 movslq (%rbx),%rax 24: 48 01 d8 add %rbx,%rax 27: 48 39 c1 cmp %rax,%rcx * 2a: 73 b0 jae 0xffffffdc <-- trapping instruction 2c: 4c 8d 63 fc lea -0x4(%rbx),%r12 30: 49 39 ec cmp %rbp,%r12 33: 73 b3 jae 0xffffffe8 35: 4d 29 ee sub %r13,%r14 38: 49 c1 fe 02 sar $0x2,%r14 3c: 4b 8d 04 76 lea (%r14,%r14,2),%rax