watchdog: BUG: soft lockup - CPU#0 stuck for 26s! [syz-executor.6:12281] Modules linked in: irq event stamp: 2594459 hardirqs last enabled at (2594458): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (2594459): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (2575386): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2575399): [] __irq_exit_rcu+0xc4/0x100 CPU: 0 UID: 0 PID: 12281 Comm: syz-executor.6 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:__asan_memset+0x1f/0x50 Code: 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 41 55 41 89 f5 41 54 49 89 d4 ba 01 00 00 00 55 48 8b 4c 24 18 4c 89 e6 48 89 fd 4c f0 ff ff 84 c0 74 13 4c 89 e2 44 89 ee 48 89 ef 5d 41 5c 41 RSP: 0018:ffff88806ce094c8 EFLAGS: 00000296 RAX: ffff88800d361bc0 RBX: ffff88806ce095d0 RCX: ffffffff8134c08e RDX: 0000000000000001 RSI: 0000000000000070 RDI: ffff88806ce09538 RBP: ffff88806ce09538 R08: 0000000000000005 R09: 0000000000000000 R10: ffff888014c19900 R11: 0000000000000000 R12: 0000000000000070 R13: 0000000000000000 R14: ffff88800d361bc0 R15: ffff88806ce09538 FS: 00007f53cbfbc700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f53cbfbbfe8 CR3: 0000000014a1e000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: __unwind_start+0x2e/0x7c0 arch_stack_walk+0x63/0xf0 stack_trace_save+0x8f/0xc0 kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 __kasan_slab_alloc+0x59/0x70 kmem_cache_alloc_noprof+0x13d/0x3d0 __alloc_object+0x2f/0x270 __create_object+0x1d/0x80 kmem_cache_alloc_node_noprof+0x311/0x3e0 kmalloc_reserve+0x189/0x2b0 __alloc_skb+0x162/0x370 skb_copy+0x1d5/0x3b0 mac80211_hwsim_tx_frame_no_nl.isra.0+0xafb/0x1320 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:rcu_is_watching+0x62/0x70 Code: 03 38 d0 7c 04 84 d2 75 26 8b 83 d0 65 03 00 c1 e8 02 83 e0 01 65 ff 0d 04 72 aa 7e 74 06 5b e9 d4 21 4e 03 0f 1f 44 00 00 5b c9 21 4e 03 e8 e4 a0 52 00 eb d3 66 90 90 90 90 90 90 90 90 90 RSP: 0018:ffff888038ae76e0 EFLAGS: 00000246 RAX: 0000000000000001 RBX: 1ffff1100715cedf RCX: ffffffff815023fe RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88806ce365d0 RBP: 0000000000000000 R08: 0000000000000000 R09: fffffbfff0c7f6d2 R10: ffffffff863fb697 R11: 0000000000000003 R12: ffffffff85c16280 R13: ffffffff81726096 R14: 000000000003a70c R15: ffff888034d0da00 lock_release+0x4f8/0x6f0 __is_insn_slot_addr+0x13b/0x290 kernel_text_address+0x48/0xc0 __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_record_aux_stack+0x89/0xa0 __call_rcu_common.constprop.0+0x6a/0xaa0 kfree+0x28e/0x480 __free_slab+0x10d/0x130 qlist_free_all+0x50/0x160 kasan_quarantine_reduce+0x19f/0x240 __kasan_slab_alloc+0x49/0x70 kmem_cache_alloc_noprof+0x13d/0x3d0 getname_flags.part.0+0x48/0x550 getname+0x8f/0xd0 do_sys_openat2+0xec/0x1d0 __x64_sys_openat+0x143/0x200 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f53ce9f9a04 Code: 84 00 00 00 00 00 44 89 54 24 0c e8 96 f9 ff ff 44 8b 54 24 0c 44 89 e2 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 89 44 24 0c e8 c8 f9 ff ff 8b 44 RSP: 002b:00007f53cbfbbed0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f53cea90970 RCX: 00007f53ce9f9a04 RDX: 0000000000000002 RSI: 00007f53cbfbc000 RDI: 00000000ffffff9c RBP: 00007f53cbfbc000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000002 R13: 0000000000000003 R14: 0000000020000248 R15: 0000000000000003 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 0 Comm: swapper/1 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:queued_spin_lock_slowpath+0xb3/0xb60 Code: 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 be 04 00 00 00 48 89 ef e8 f1 9c 04 fd 41 0f b6 06 <41> 38 c5 7c 08 84 c0 0f 85 48 09 00 00 8b 45 00 89 44 24 38 85 c0 RSP: 0018:ffff88806cf099e0 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff84a7409f RDX: fffffbfff0c1b97d RSI: 0000000000000004 RDI: ffffffff860dcbe0 RBP: ffffffff860dcbe0 R08: 0000000000000000 R09: fffffbfff0c1b97c R10: ffffffff860dcbe3 R11: 0000000000000001 R12: 1ffff1100d9e133d R13: 0000000000000003 R14: fffffbfff0c1b97c R15: ffff88806cf09a18 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8e38024300 CR3: 0000000014d86000 CR4: 0000000000350ef0 Call Trace: do_raw_spin_lock+0x1de/0x270 mac80211_hwsim_tx_frame_no_nl.isra.0+0x6d1/0x1320 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: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:ffff8880096cfe68 EFLAGS: 00000206 RAX: 000000000015285f RBX: 0000000000000001 RCX: ffffffff84a51847 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff814b16aa RBP: dffffc0000000000 R08: 0000000000000001 R09: ffffed100d9e6cba R10: ffff88806cf365d3 R11: 0000000000000000 R12: ffffffff863fb690 R13: 1ffff110012d9fd2 R14: 0000000000000000 R15: 0000000000000000 default_idle_call+0x6d/0xb0 do_idle+0x2fa/0x3b0 cpu_startup_entry+0x4f/0x60 start_secondary+0x1c1/0x220 common_startup_64+0x12c/0x138 loop1: detected capacity change from 0 to 512 ---------------- Code disassembly (best guess): 0: 90 nop 1: 90 nop 2: 90 nop 3: 90 nop 4: 90 nop 5: 90 nop 6: 90 nop 7: 90 nop 8: 90 nop 9: 90 nop a: 90 nop b: f3 0f 1e fa endbr64 f: 41 55 push %r13 11: 41 89 f5 mov %esi,%r13d 14: 41 54 push %r12 16: 49 89 d4 mov %rdx,%r12 19: ba 01 00 00 00 mov $0x1,%edx 1e: 55 push %rbp 1f: 48 8b 4c 24 18 mov 0x18(%rsp),%rcx 24: 4c 89 e6 mov %r12,%rsi 27: 48 89 fd mov %rdi,%rbp * 2a: e8 4c f0 ff ff callq 0xfffff07b <-- trapping instruction 2f: 84 c0 test %al,%al 31: 74 13 je 0x46 33: 4c 89 e2 mov %r12,%rdx 36: 44 89 ee mov %r13d,%esi 39: 48 89 ef mov %rbp,%rdi 3c: 5d pop %rbp 3d: 41 5c pop %r12 3f: 41 rex.B