watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [syz-executor.0:96230] Modules linked in: irq event stamp: 4269899 hardirqs last enabled at (4269898): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (4269899): [] sysvec_apic_timer_interrupt+0xf/0x90 softirqs last enabled at (4262514): [] irq_exit_rcu+0x93/0xc0 softirqs last disabled at (4262517): [] irq_exit_rcu+0x93/0xc0 CPU: 0 PID: 96230 Comm: syz-executor.0 Not tainted 6.5.0-rc6-next-20230816 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__sanitizer_cov_trace_switch+0x40/0x90 Code: 48 83 f8 20 74 6b 77 48 48 83 f8 08 74 5b 48 83 f8 10 75 2f 41 bd 03 00 00 00 4c 8b 75 00 31 db 4d 85 f6 74 1e 48 8b 74 dd 10 <48> 8b 4c 24 28 4c 89 e2 4c 89 ef 48 83 c3 01 e8 8c fd ff ff 49 39 RSP: 0018:ffff88806ce09808 EFLAGS: 00000206 RAX: 0000000000000008 RBX: 0000000000000000 RCX: 0000000000000001 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: ffffffff84854380 R08: 0000000000000006 R09: ffffffff81121a10 R10: ffffffff813a424b R11: 0000000000000001 R12: 0000000000000001 R13: 0000000000000001 R14: 0000000000000003 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe23871fa8 CR3: 000000000d7d6000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: unwind_next_frame+0xe7a/0x25d0 arch_stack_walk+0xe6/0x160 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 __kasan_record_aux_stack+0x8e/0xa0 __call_rcu_common.constprop.0+0x6a/0xbd0 kmem_cache_free+0xc1/0x4d0 kfree_skbmem+0xef/0x1b0 consume_skb+0x126/0x2e0 mac80211_hwsim_tx_frame+0x1f6/0x2a0 mac80211_hwsim_beacon_tx+0x427/0x730 __iterate_interfaces+0x2d3/0x580 ieee80211_iterate_active_interfaces_atomic+0x73/0x1c0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x59d/0xb60 hrtimer_run_softirq+0x14c/0x310 __do_softirq+0x1b7/0x7d4 irq_exit_rcu+0x93/0xc0 sysvec_apic_timer_interrupt+0x6e/0x90 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:unwind_next_frame+0xced/0x25d0 Code: 00 0f 1f 44 00 00 e9 07 f7 ff ff 48 89 df e8 9a 8d 6f 00 e9 60 f3 ff ff 4c 89 f7 e8 2d 8d 6f 00 e9 72 f4 ff ff e8 33 d9 39 00 <4d> 8d 75 f8 ba 08 00 00 00 48 89 df 4c 89 f6 e8 8f f0 ff ff 31 ff RSP: 0018:ffff8880455ff578 EFLAGS: 00000293 RAX: 0000000000000000 RBX: ffff8880455ff5f8 RCX: 0000000000000000 RDX: ffff8880426151c0 RSI: ffffffff8113c34d RDI: 0000000000000001 RBP: ffffffff860c300e R08: 0000000000000001 R09: 0000000000000004 R10: 0000000000000002 R11: 0000000000000001 R12: 0000000000000001 R13: ffff8880455ffd08 R14: 0000000000000002 R15: ffffffff860c3012 arch_stack_walk+0xe6/0x160 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 __kasan_record_aux_stack+0x8e/0xa0 __call_rcu_common.constprop.0+0x6a/0xbd0 kmem_cache_free+0xc1/0x4d0 __vm_area_free+0x38/0x50 remove_vma+0x123/0x170 exit_mmap+0x407/0x9b0 mmput+0xd5/0x390 do_exit+0x99f/0x2740 do_group_exit+0xd4/0x2a0 get_signal+0x2693/0x2720 arch_do_signal_or_restart+0x81/0x790 exit_to_user_mode_prepare+0xeb/0x180 syscall_exit_to_user_mode+0x1d/0x50 do_syscall_64+0x4c/0x90 entry_SYSCALL_64_after_hwframe+0x73/0xdd RIP: 0033:0x7f2deb026b19 Code: Unable to access opcode bytes at 0x7f2deb026aef. RSP: 002b:00007f2de859c188 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: 0000000000000009 RBX: 00007f2deb139f60 RCX: 00007f2deb026b19 RDX: 0000000000101042 RSI: 0000000020000100 RDI: ffffffffffffff9c RBP: 00007f2deb080f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff82e8f8af R14: 00007f2de859c300 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: 48 83 f8 20 cmp $0x20,%rax 4: 74 6b je 0x71 6: 77 48 ja 0x50 8: 48 83 f8 08 cmp $0x8,%rax c: 74 5b je 0x69 e: 48 83 f8 10 cmp $0x10,%rax 12: 75 2f jne 0x43 14: 41 bd 03 00 00 00 mov $0x3,%r13d 1a: 4c 8b 75 00 mov 0x0(%rbp),%r14 1e: 31 db xor %ebx,%ebx 20: 4d 85 f6 test %r14,%r14 23: 74 1e je 0x43 25: 48 8b 74 dd 10 mov 0x10(%rbp,%rbx,8),%rsi * 2a: 48 8b 4c 24 28 mov 0x28(%rsp),%rcx <-- trapping instruction 2f: 4c 89 e2 mov %r12,%rdx 32: 4c 89 ef mov %r13,%rdi 35: 48 83 c3 01 add $0x1,%rbx 39: e8 8c fd ff ff callq 0xfffffdca 3e: 49 rex.WB 3f: 39 .byte 0x39