watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.7:8554] Modules linked in: irq event stamp: 1900587 hardirqs last enabled at (1900586): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (1900587): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (1882966): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (1882969): [] __irq_exit_rcu+0xc4/0x100 CPU: 1 UID: 0 PID: 8554 Comm: syz-executor.7 Not tainted 6.13.0-rc1-next-20241206 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:mac80211_hwsim_tx_frame_no_nl.isra.0+0xd99/0x1320 Code: cf f7 53 e3 a5 9b c4 20 48 89 c1 48 f7 ea 48 c1 f9 3f 48 c1 fa 07 48 29 ca 48 89 54 24 38 e9 2e f9 ff ff e8 d9 4c 16 fe 89 dd <31> ff 66 81 e5 00 04 89 ee e8 c9 4f 16 fe 66 85 ed 0f 84 d4 01 00 RSP: 0018:ffff88806cf09b38 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000070000 RCX: ffffffff835b9329 RDX: ffff88803e243780 RSI: ffffffff835b93f7 RDI: 0000000000000003 RBP: 0000000000070000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 5050505001000011 R12: ffff88803db0b080 R13: ffff8880152c4780 R14: 0000000000112a7c R15: ffff88803db0b318 FS: 00007f5519e7f700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2d621000 CR3: 000000001a3bc000 CR4: 0000000000350ef0 Call Trace: mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x546/0x950 __iterate_interfaces+0x2e0/0x650 ieee80211_iterate_active_interfaces_atomic+0x71/0x1b0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x1ab/0xa80 hrtimer_run_softirq+0x14c/0x310 handle_softirqs+0x1b1/0x770 __irq_exit_rcu+0xc4/0x100 irq_exit_rcu+0x9/0x20 sysvec_apic_timer_interrupt+0x70/0x80 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:qlist_free_all+0x96/0x160 Code: 0f 82 e0 00 00 00 48 c7 c2 00 00 00 80 48 2b 15 b0 8f d2 03 48 01 ca 48 c1 ea 0c 48 c1 e2 06 48 03 15 8e 8f d2 03 48 8b 72 08 <48> 89 d1 40 f6 c6 01 0f 85 a1 00 00 00 66 90 80 79 33 f5 ba 00 00 RSP: 0018:ffff888032b576a0 EFLAGS: 00000282 RAX: ffff88800a6b5000 RBX: ffff88800a6b5000 RCX: ffff88808a6b5000 RDX: ffffea000029ad40 RSI: ffffea000029ac01 RDI: ffffffff84a7384c RBP: 0000000000000000 R08: 0000000000000001 R09: fffffbfff0fddbe9 R10: ffffffff87eedf4f R11: 0000000000000000 R12: 0000000000000000 R13: ffff888032b576d8 R14: ffff88800e4ead60 R15: ffff88800e4ead60 kasan_quarantine_reduce+0x19f/0x240 __kasan_slab_alloc+0x49/0x70 kmem_cache_alloc_noprof+0x13d/0x3d0 vm_area_dup+0x52/0x160 __split_vma+0x16c/0xfc0 vms_gather_munmap_vmas+0x16b/0x10c0 __mmap_region+0x30e/0x22b0 mmap_region+0x248/0x300 do_mmap+0xa26/0x1070 do_shmat+0xfa6/0x1300 __x64_sys_shmat+0xd0/0x170 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f551c909b19 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:00007f5519e7f188 EFLAGS: 00000246 ORIG_RAX: 000000000000001e RAX: ffffffffffffffda RBX: 00007f551ca1cf60 RCX: 00007f551c909b19 RDX: cf3caed3d8c7cb92 RSI: 0000000020ffc000 RDI: 000000000000804b RBP: 00007f551c963f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe6e29327f R14: 00007f5519e7f300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.13.0-rc1-next-20241206 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__is_insn_slot_addr+0x144/0x290 Code: ff 85 db 0f 85 af 00 00 00 e8 48 80 ff ff 48 c7 c7 80 62 c1 85 48 8d 35 00 00 00 00 e8 c5 c2 dd ff e8 c0 6a e8 ff 44 89 e0 5b <5d> 41 5c 41 5d 41 5e e9 30 f6 34 03 e8 1b 80 ff ff e8 f6 d3 e6 ff RSP: 0018:ffff88806ce09650 EFLAGS: 00000297 RAX: 0000000000000000 RBX: ffffffff86d7792b RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff85c16280 RDI: ffffffff85a2ac3c RBP: 0000000000000001 R08: 0000000000000001 R09: ffffffff85a2b280 R10: ffffffff863fb697 R11: 00000000000c2519 R12: 0000000000000000 R13: 0000000000000000 R14: ffffffff85c6de88 R15: 0000000000000820 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000562af0501810 CR3: 000000001870c000 CR4: 0000000000350ef0 Call Trace: kernel_text_address+0x5b/0xc0 __kernel_text_address+0xd/0x40 unwind_get_return_address+0x59/0xa0 arch_stack_walk+0x9d/0xf0 stack_trace_save+0x8f/0xc0 kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 __kasan_slab_alloc+0x59/0x70 kmem_cache_alloc_node_noprof+0x14c/0x3e0 __alloc_skb+0x2ad/0x370 __netdev_alloc_skb+0x7a/0x7c0 __ieee80211_beacon_get+0x3f4/0xfc0 ieee80211_beacon_get_tim+0xa6/0x280 mac80211_hwsim_beacon_tx+0x49b/0x950 __iterate_interfaces+0x2e0/0x650 ieee80211_iterate_active_interfaces_atomic+0x71/0x1b0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x1ab/0xa80 hrtimer_run_softirq+0x14c/0x310 handle_softirqs+0x1b1/0x770 __irq_exit_rcu+0xc4/0x100 irq_exit_rcu+0x9/0x20 sysvec_apic_timer_interrupt+0x70/0x80 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:default_idle+0x1e/0x30 Code: 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 0f 1f 44 00 00 eb 0c 0f 1f 44 00 00 0f 00 2d 79 67 1d 00 0f 1f 44 00 00 fb f4 e9 ec 2e 02 00 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 RSP: 0018:ffffffff85a07e10 EFLAGS: 00000206 RAX: 0000000000653d17 RBX: 0000000000000000 RCX: ffffffff84a51847 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff814b16aa RBP: dffffc0000000000 R08: 0000000000000001 R09: ffffed100d9c6cba R10: ffff88806ce365d3 R11: 0000000000000000 R12: ffffffff863fb690 R13: 1ffffffff0b40fc7 R14: 0000000000000000 R15: 0000000000000000 default_idle_call+0x6d/0xb0 do_idle+0x2fa/0x3b0 cpu_startup_entry+0x4f/0x60 rest_init+0x164/0x290 start_kernel+0x40d/0x530 x86_64_start_reservations+0x18/0x30 x86_64_start_kernel+0xcb/0xe0 common_startup_64+0x12c/0x138 hpet: Lost 8 RTC interrupts ---------------- Code disassembly (best guess), 7 bytes skipped: 0: 20 48 89 and %cl,-0x77(%rax) 3: c1 48 f7 ea rorl $0xea,-0x9(%rax) 7: 48 c1 f9 3f sar $0x3f,%rcx b: 48 c1 fa 07 sar $0x7,%rdx f: 48 29 ca sub %rcx,%rdx 12: 48 89 54 24 38 mov %rdx,0x38(%rsp) 17: e9 2e f9 ff ff jmpq 0xfffff94a 1c: e8 d9 4c 16 fe callq 0xfe164cfa 21: 89 dd mov %ebx,%ebp * 23: 31 ff xor %edi,%edi <-- trapping instruction 25: 66 81 e5 00 04 and $0x400,%bp 2a: 89 ee mov %ebp,%esi 2c: e8 c9 4f 16 fe callq 0xfe164ffa 31: 66 85 ed test %bp,%bp 34: 0f .byte 0xf 35: 84 d4 test %dl,%ah 37: 01 00 add %eax,(%rax)