watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.5:16329] Modules linked in: irq event stamp: 2238175 hardirqs last enabled at (2238174): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (2238175): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (2233074): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2233077): [] __irq_exit_rcu+0xc4/0x100 CPU: 1 UID: 0 PID: 16329 Comm: syz-executor.5 Not tainted 6.12.0-next-20241120 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__kernel_text_address+0xd/0x40 Code: d5 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 53 48 89 fb e8 23 ff ff ff <85> c0 75 1b 48 81 fb 00 a0 d5 86 72 0c 31 c0 48 81 fb 6a 9c eb 86 RSP: 0018:ffff88806cf09690 EFLAGS: 00000292 RAX: 0000000000000001 RBX: ffffffff81405feb RCX: 0000000000000001 RDX: 1ffff1100d9e12e2 RSI: ffff88806cf09e10 RDI: ffffffff81405feb RBP: ffff88806cf09710 R08: 0000000000000001 R09: ffff88806cf096f8 R10: 000000000003c001 R11: 00000000000821a6 R12: ffff88806cf09780 R13: 0000000000000000 R14: ffff8880399b3700 R15: 0000000000000820 FS: 00007f96052b0700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2e627000 CR3: 000000003a6b4000 CR4: 0000000000350ef0 Call Trace: 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/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:srso_safe_ret+0x0/0x20 Code: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc 48 b8 <48> 8d 64 24 08 c3 cc cc 0f ae e8 e8 f0 ff ff ff 0f 0b 66 66 2e 0f RSP: 0018:ffff888039fdfac8 EFLAGS: 00000212 RAX: fffffffffffffff5 RBX: 0000000000000001 RCX: ffffc9000098c000 RDX: 0000000000040000 RSI: ffffffff81fd6893 RDI: 0000000000000007 RBP: ffff8880097ef188 R08: 0000000000000000 R09: ffff8880399b4138 R10: fffffffffffffff5 R11: 0000000000000001 R12: ffff8880097ef180 R13: ffff88800c407900 R14: ffff8880097ef260 R15: ffff88801555ba18 srso_return_thunk+0x5/0x5f proc_keys_show+0x8d7/0xd90 seq_read_iter+0xbdc/0x1300 proc_reg_read_iter+0x20e/0x2e0 vfs_read+0x85a/0xbd0 __x64_sys_pread64+0x1fc/0x250 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f9607d3ab19 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:00007f96052b0188 EFLAGS: 00000246 ORIG_RAX: 0000000000000011 RAX: ffffffffffffffda RBX: 00007f9607e4df60 RCX: 00007f9607d3ab19 RDX: 0000000000001005 RSI: 00000000200022c0 RDI: 0000000000000006 RBP: 00007f9607d94f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc3c90cc2f R14: 00007f96052b0300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at default_idle+0x1e/0x30 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 66 66 2e 0f 1f 84 00 data16 nopw %cs:0x0(%rax,%rax,1) 7: 00 00 00 00 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: 90 nop 18: 90 nop 19: 90 nop 1a: 90 nop 1b: 90 nop 1c: 66 0f 1f 00 nopw (%rax) 20: 53 push %rbx 21: 48 89 fb mov %rdi,%rbx 24: e8 23 ff ff ff callq 0xffffff4c * 29: 85 c0 test %eax,%eax <-- trapping instruction 2b: 75 1b jne 0x48 2d: 48 81 fb 00 a0 d5 86 cmp $0xffffffff86d5a000,%rbx 34: 72 0c jb 0x42 36: 31 c0 xor %eax,%eax 38: 48 81 fb 6a 9c eb 86 cmp $0xffffffff86eb9c6a,%rbx