watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [syz-executor.3:7297] Modules linked in: irq event stamp: 3985459 hardirqs last enabled at (3985458): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (3985459): [] sysvec_apic_timer_interrupt+0xf/0x90 softirqs last enabled at (3771330): [] __irq_exit_rcu+0xcc/0x110 softirqs last disabled at (3771333): [] __irq_exit_rcu+0xcc/0x110 CPU: 0 PID: 7297 Comm: syz-executor.3 Not tainted 6.2.0-rc8-next-20230214 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_next_frame+0x110/0x22d0 Code: b2 19 00 00 f6 83 88 00 00 00 03 0f 85 10 03 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8d 75 41 4c 89 f2 48 c1 ea 03 0f b6 04 02 <4c> 89 f2 83 e2 07 38 d0 7f 08 84 c0 0f 85 3c 0b 00 00 48 89 e9 41 RSP: 0018:ffff88806ce09638 EFLAGS: 00000216 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff8607d401 RDX: 1ffff1100d9c12dd RSI: ffffffff8446d37e RDI: ffff88806ce096a8 RBP: ffff88806ce09700 R08: ffffffff8607d426 R09: ffff88806ce096e8 R10: 0000000000038001 R11: 0000000000000000 R12: ffff88806ce09708 R13: ffff88806ce096a8 R14: ffff88806ce096e9 R15: 0000000000000002 FS: 00007f476d2a0700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb1fe849b58 CR3: 000000000689a000 CR4: 0000000000350ef0 Call Trace: arch_stack_walk+0x87/0xf0 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 __kasan_slab_alloc+0x59/0x70 kmem_cache_alloc_node+0x187/0x330 __alloc_skb+0x28c/0x330 skb_copy+0x13d/0x3f0 mac80211_hwsim_tx_frame_no_nl.isra.0+0xb08/0x1330 mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x567/0xb10 __iterate_interfaces+0x2d3/0x580 ieee80211_iterate_active_interfaces_atomic+0x73/0x1c0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x54b/0xcb0 hrtimer_run_softirq+0x14c/0x310 __do_softirq+0x258/0x8a2 __irq_exit_rcu+0xcc/0x110 irq_exit_rcu+0x9/0x20 sysvec_apic_timer_interrupt+0x6e/0x90 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:_raw_spin_unlock_irqrestore+0x34/0x50 Code: c7 18 53 48 89 f3 48 8b 74 24 10 e8 c6 6f e4 fc 48 89 ef e8 4e ec e4 fc 80 e7 02 74 06 e8 94 b6 09 fd fb 65 ff 0d 24 a5 ba 7b <74> 07 5b 5d e9 17 28 00 00 0f 1f 44 00 00 5b 5d e9 0b 28 00 00 0f RSP: 0018:ffff8880458f7b78 EFLAGS: 00000246 RAX: 000000000036a6d1 RBX: 0000000000000246 RCX: ffffffff812cb13f RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8448e45c RBP: ffff88800844e900 R08: 0000000000000001 R09: ffffffff8777496f R10: fffffbfff0eee92d R11: 0000000000000001 R12: ffff88800844e900 R13: 0000000000000246 R14: 0000000000000000 R15: ffffea0000255bc0 __unfreeze_partials+0x11c/0x150 qlist_free_all+0x6d/0x1a0 kasan_quarantine_reduce+0x199/0x230 __kasan_kmalloc+0x6f/0x90 io_uring_alloc_task_context+0x457/0x620 __io_uring_add_tctx_node+0x296/0x4c0 io_uring_setup+0x1893/0x21e0 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f476fd2ab19 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:00007f476d2a0108 EFLAGS: 00000202 ORIG_RAX: 00000000000001a9 RAX: ffffffffffffffda RBX: 00007f476fe3df60 RCX: 00007f476fd2ab19 RDX: 0000000020ffd000 RSI: 0000000020000100 RDI: 00000000000038e7 RBP: 0000000020000100 R08: 0000000020000200 R09: 0000000020000200 R10: 00000000200001c0 R11: 0000000000000202 R12: 0000000020000200 R13: 0000000020ffd000 R14: 00000000200001c0 R15: 0000000020ffd000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.2.0-rc8-next-20230214 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:queued_spin_lock_slowpath+0x128/0xc50 Code: 00 00 00 65 48 2b 04 25 28 00 00 00 0f 85 d5 09 00 00 48 81 c4 88 00 00 00 5b 5d 41 5c 41 5d 41 5e 41 5f e9 5e 1f 00 00 f3 90 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e4 00 00 RSP: 0018:ffff88806cf09a28 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff8448ecab RDX: fffffbfff0b4abd5 RSI: 0000000000000004 RDI: ffffffff85a55ea0 RBP: ffffffff85a55ea0 R08: 0000000000000000 R09: ffffffff85a55ea3 R10: fffffbfff0b4abd4 R11: 0000000000000001 R12: 0000000000000003 R13: fffffbfff0b4abd4 R14: 0000000000000001 R15: 1ffff1100d9e1346 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000557268fe6648 CR3: 000000000fdd6000 CR4: 0000000000350ee0 Call Trace: do_raw_spin_lock+0x1e0/0x270 mac80211_hwsim_tx_frame_no_nl.isra.0+0x6de/0x1330 mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x567/0xb10 __iterate_interfaces+0x2d3/0x580 ieee80211_iterate_active_interfaces_atomic+0x73/0x1c0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x54b/0xcb0 hrtimer_run_softirq+0x14c/0x310 __do_softirq+0x258/0x8a2 __irq_exit_rcu+0xcc/0x110 irq_exit_rcu+0x9/0x20 sysvec_apic_timer_interrupt+0x6e/0x90 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:default_idle+0xf/0x20 Code: 4c 01 c7 4c 29 c2 e9 72 ff ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa eb 07 0f 00 2d a3 89 3b 00 fb f4 e9 df 13 02 00 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 RSP: 0018:ffff888008e1fe70 EFLAGS: 00000206 RAX: 000000000044cdb7 RBX: ffff888008da5040 RCX: ffffffff8446e87e RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff81284600 RBP: 0000000000000001 R08: 0000000000000001 R09: ffff88806cf34f83 R10: ffffed100d9e69f0 R11: 0000000000000001 R12: ffffed10011b4a08 R13: ffffffff85d24410 R14: 0000000000000000 R15: 0000000000000000 default_idle_call+0x67/0xa0 do_idle+0x300/0x3d0 cpu_startup_entry+0x18/0x20 start_secondary+0x1ca/0x220 secondary_startup_64_no_verify+0xe0/0xeb ---------------- Code disassembly (best guess): 0: b2 19 mov $0x19,%dl 2: 00 00 add %al,(%rax) 4: f6 83 88 00 00 00 03 testb $0x3,0x88(%rbx) b: 0f 85 10 03 00 00 jne 0x321 11: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 18: fc ff df 1b: 4d 8d 75 41 lea 0x41(%r13),%r14 1f: 4c 89 f2 mov %r14,%rdx 22: 48 c1 ea 03 shr $0x3,%rdx 26: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax * 2a: 4c 89 f2 mov %r14,%rdx <-- trapping instruction 2d: 83 e2 07 and $0x7,%edx 30: 38 d0 cmp %dl,%al 32: 7f 08 jg 0x3c 34: 84 c0 test %al,%al 36: 0f 85 3c 0b 00 00 jne 0xb78 3c: 48 89 e9 mov %rbp,%rcx 3f: 41 rex.B