watchdog: BUG: soft lockup - CPU#0 stuck for 26s! [syz-executor.2:20972] Modules linked in: irq event stamp: 2169631 hardirqs last enabled at (2169630): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (2169631): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (2156000): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2156023): [] __irq_exit_rcu+0xc4/0x100 CPU: 0 UID: 0 PID: 20972 Comm: syz-executor.2 Not tainted 6.12.0-next-20241126 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:kernel_text_address+0x13/0xc0 Code: bb 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 55 48 89 fd 48 83 ec 08 e8 3f ff ff ff 85 c0 <74> 0f b8 01 00 00 00 48 83 c4 08 5d e9 6c 2c 65 03 e8 e7 32 17 00 RSP: 0018:ffff88806ce09638 EFLAGS: 00000202 RAX: 0000000000000001 RBX: ffffffff818bc474 RCX: ffffffff867d3c01 RDX: 1ffff1100d9c12da RSI: 0000000000000000 RDI: ffffffff818bc474 RBP: ffffffff818bc474 R08: ffffffff867d3c9a R09: ffff88806ce096b8 R10: 000000000003c001 R11: 000000000001234a R12: ffff88806ce09740 R13: 0000000000000000 R14: ffff888042d65280 R15: 0000000000082820 FS: 00007fda561fe700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b32c24000 CR3: 000000002fbc2000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: __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 kmalloc_reserve+0x189/0x2b0 __alloc_skb+0x162/0x370 __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/0xa70 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:_raw_spin_unlock_irqrestore+0x34/0x50 Code: c7 18 53 48 89 f3 48 8b 74 24 10 e8 66 0e a9 fc 48 89 ef e8 6e 81 a9 fc 80 e7 02 74 06 e8 e4 da d2 fc fb 65 ff 0d 54 7c 7c 7b <74> 07 5b 5d e9 a3 1e 00 00 0f 1f 44 00 00 5b 5d e9 97 1e 00 00 0f RSP: 0018:ffff88804216f730 EFLAGS: 00000246 RAX: 000000000020e5f5 RBX: 0000000000000246 RCX: 1ffffffff0fe00cf RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff84872a6c RBP: ffff888008c4e900 R08: 0000000000000001 R09: fffffbfff0fddff1 R10: ffffffff87eeff8f R11: 00000000000007e0 R12: 0000000000000000 R13: 0000000000000000 R14: ffff888008c4f780 R15: 0000000000000246 __put_partials+0xc4/0x110 qlist_free_all+0x50/0x160 kasan_quarantine_reduce+0x19f/0x240 __kasan_slab_alloc+0x49/0x70 kmem_cache_alloc_noprof+0x13d/0x3d0 ptlock_alloc+0x21/0x70 pte_alloc_one+0x78/0x340 __pte_alloc+0x6d/0x350 __handle_mm_fault+0x2480/0x2f50 handle_mm_fault+0x2b4/0x6a0 __get_user_pages+0x59d/0x3820 populate_vma_page_range+0x287/0x3b0 __mm_populate+0x101/0x3a0 do_mlock+0x447/0x800 __x64_sys_mlock2+0xc1/0x100 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fda58c88b19 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:00007fda561fe188 EFLAGS: 00000246 ORIG_RAX: 0000000000000145 RAX: ffffffffffffffda RBX: 00007fda58d9bf60 RCX: 00007fda58c88b19 RDX: 0000000000000000 RSI: 0000000000004000 RDI: 0000000020ff7000 RBP: 00007fda58ce2f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe03345d0f R14: 00007fda561fe300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at default_idle+0x1e/0x30 ---------------- Code disassembly (best guess): 0: bb 66 0f 1f 44 mov $0x441f0f66,%ebx 5: 00 00 add %al,(%rax) 7: 90 nop 8: 90 nop 9: 90 nop a: 90 nop b: 90 nop c: 90 nop d: 90 nop e: 90 nop f: 90 nop 10: 90 nop 11: 90 nop 12: 90 nop 13: 90 nop 14: 90 nop 15: 90 nop 16: 90 nop 17: 66 0f 1f 00 nopw (%rax) 1b: 55 push %rbp 1c: 48 89 fd mov %rdi,%rbp 1f: 48 83 ec 08 sub $0x8,%rsp 23: e8 3f ff ff ff callq 0xffffff67 28: 85 c0 test %eax,%eax * 2a: 74 0f je 0x3b <-- trapping instruction 2c: b8 01 00 00 00 mov $0x1,%eax 31: 48 83 c4 08 add $0x8,%rsp 35: 5d pop %rbp 36: e9 6c 2c 65 03 jmpq 0x3652ca7 3b: e8 e7 32 17 00 callq 0x173327