watchdog: BUG: soft lockup - CPU#0 stuck for 21s! [syz-executor.4:8457] Modules linked in: irq event stamp: 5569217 hardirqs last enabled at (5569216): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (5569217): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (5536946): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (5536949): [] irq_exit_rcu+0x94/0xc0 CPU: 0 UID: 0 PID: 8457 Comm: syz-executor.4 Not tainted 6.12.0-rc3-next-20241016 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_next_frame+0xb02/0x2490 Code: fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 bb 14 00 00 4c 89 e2 4d 89 77 48 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 <0f> 85 7b 14 00 00 49 8d 7f 68 49 c7 47 60 00 00 00 00 48 b8 00 00 RSP: 0018:ffff88806ce09778 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: 0000000000000002 RCX: ffffffff86773e4a RDX: 1ffff1100d9c1313 RSI: 1ffff1100d9c1312 RDI: 1ffff1100d9c1312 RBP: ffff88806ce09890 R08: ffffffff86773e4e R09: ffff88806ce09878 R10: 000000000003c001 R11: 0000000000003f0d R12: ffff88806ce09898 R13: ffff88806ce09880 R14: ffff88806ce098e0 R15: ffff88806ce09838 FS: 00007effb3bff700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555590f85c98 CR3: 0000000042366000 CR4: 0000000000350ef0 Call Trace: __unwind_start+0x517/0x7c0 arch_stack_walk+0x63/0xf0 stack_trace_save+0x8f/0xc0 set_track_prepare+0x36/0x70 __alloc_object+0xf4/0x270 __create_object+0x1d/0x80 kmem_cache_alloc_node_noprof+0x311/0x3e0 __alloc_skb+0x2ad/0x370 __netdev_alloc_skb+0x7a/0x7a0 __ieee80211_beacon_get+0x3f4/0xfc0 ieee80211_beacon_get_tim+0xa6/0x280 mac80211_hwsim_beacon_tx+0x49b/0x950 __iterate_interfaces+0x2cb/0x5d0 ieee80211_iterate_active_interfaces_atomic+0x71/0x1b0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x1ab/0xa70 hrtimer_run_softirq+0x14c/0x310 handle_softirqs+0x1b1/0x770 irq_exit_rcu+0x94/0xc0 sysvec_apic_timer_interrupt+0x70/0x80 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:put_cpu_partial+0x10a/0x1b0 Code: 24 28 75 5b 49 c7 44 24 28 00 00 00 00 4c 89 e7 48 8d 35 00 00 00 00 e8 b4 ff ab ff 4d 85 ed 74 06 e8 ca 7f d5 ff fb 4d 85 f6 <74> 1c 5b 4c 89 f6 48 89 ef 5d 41 5c 41 5d 41 5e e9 c1 fa ff ff 44 RSP: 0018:ffff8880377efbf0 EFLAGS: 00000246 RAX: 0000000000501445 RBX: ffffea0000573000 RCX: 1ffffffff0fdca6c RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8183f876 RBP: ffff888008c4f780 R08: 0000000000000001 R09: fffffbfff0fda9d9 R10: ffffffff87ed4ecf R11: 0000000000000000 R12: ffff88806ce40350 R13: 0000000000000200 R14: 0000000000000000 R15: ffff888015cc0250 qlist_free_all+0x50/0x160 kasan_quarantine_reduce+0x19c/0x230 __kasan_slab_alloc+0x49/0x70 __kmalloc_cache_noprof+0x149/0x3e0 find_get_pmu_context+0x86/0x970 __do_sys_perf_event_open+0x13e4/0x2b60 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7effb6689b19 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:00007effb3bff188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007effb679cf60 RCX: 00007effb6689b19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000080 RBP: 00007effb66e3f6d R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdb4193eaf R14: 00007effb3bff300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at default_idle+0x1e/0x30 hpet: Lost 2 RTC interrupts loop5: detected capacity change from 0 to 6 loop3: detected capacity change from 0 to 10 loop3: detected capacity change from 0 to 10 loop3: detected capacity change from 0 to 10 loop3: detected capacity change from 0 to 10 loop3: detected capacity change from 0 to 10 loop4: detected capacity change from 0 to 10 loop4: detected capacity change from 0 to 10 ---------------- Code disassembly (best guess), 3 bytes skipped: 0: 48 c1 ea 03 shr $0x3,%rdx 4: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 8: 0f 85 bb 14 00 00 jne 0x14c9 e: 4c 89 e2 mov %r12,%rdx 11: 4d 89 77 48 mov %r14,0x48(%r15) 15: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 1c: fc ff df 1f: 48 c1 ea 03 shr $0x3,%rdx 23: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) * 27: 0f 85 7b 14 00 00 jne 0x14a8 <-- trapping instruction 2d: 49 8d 7f 68 lea 0x68(%r15),%rdi 31: 49 c7 47 60 00 00 00 movq $0x0,0x60(%r15) 38: 00 39: 48 rex.W 3a: b8 .byte 0xb8