watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.5:35832] Modules linked in: irq event stamp: 7426485 hardirqs last enabled at (7426484): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (7426485): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (7413732): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (7413735): [] __irq_exit_rcu+0x11b/0x180 CPU: 1 PID: 35832 Comm: syz-executor.5 Not tainted 6.1.0-rc7-next-20221130 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:stack_trace_consume_entry+0x0/0x170 Code: 8b 44 24 10 e9 22 fe ff ff e8 fc 16 45 00 e9 52 fd ff ff e8 c2 22 07 03 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 48 b8 00 00 00 00 00 fc ff df 55 53 48 89 fb 48 83 c7 RSP: 0018:ffff88806cf09898 EFLAGS: 00000286 RAX: ffffffff81397636 RBX: ffffffff81381b60 RCX: 0000000000000000 RDX: 1ffff1100d9e131f RSI: ffffffff81397636 RDI: ffff88806cf09968 RBP: ffff88806cf09938 R08: ffffffff8608e7f0 R09: ffffffff8608e7f4 R10: ffffed100d9e1321 R11: ffff88806cf098e0 R12: ffff88806cf09968 R13: 0000000000000000 R14: ffff888049ab0000 R15: ffff888008c9adc0 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc6f3a03718 CR3: 0000000005426000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: arch_stack_walk+0x77/0xf0 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 __kasan_record_aux_stack+0x95/0xb0 __call_rcu_common.constprop.0+0x6a/0xa40 kmem_cache_free+0xc1/0x610 kfree_skbmem+0xef/0x1b0 consume_skb+0xd8/0x170 mac80211_hwsim_tx_frame+0x1f6/0x2a0 mac80211_hwsim_beacon_tx+0x566/0xab0 __iterate_interfaces+0x2d3/0x560 ieee80211_iterate_active_interfaces_atomic+0x74/0x180 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x54b/0xba0 hrtimer_run_softirq+0x176/0x350 __do_softirq+0x1c7/0x8f9 __irq_exit_rcu+0x11b/0x180 irq_exit_rcu+0x9/0x30 sysvec_apic_timer_interrupt+0x92/0xc0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:__sanitizer_cov_trace_pc+0x11/0x70 Code: 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 65 8b 05 0d 70 ba 7e 89 c1 48 8b 34 24 <81> e1 00 01 00 00 65 48 8b 14 25 00 89 03 00 a9 00 01 ff 00 74 0e RSP: 0018:ffff888030fc76c0 EFLAGS: 00000293 RAX: 0000000080000001 RBX: ffff888030fc7ad8 RCX: 0000000080000001 RDX: ffff888049ab0000 RSI: ffffffff8170c053 RDI: 0000000000000004 RBP: 00000000000001fe R08: 0000000000000004 R09: 000000000000006c R10: 00000000000001fe R11: 0000000000000001 R12: 000000000000006b R13: ffffea000087b5c0 R14: ffff888030fc7b00 R15: 000000000000006c __tlb_remove_page_size+0x113/0x470 unmap_page_range+0x1c3e/0x2c10 unmap_single_vma+0x190/0x2a0 unmap_vmas+0x226/0x380 exit_mmap+0x158/0x680 mmput+0xd5/0x390 do_exit+0x99b/0x2720 do_group_exit+0xd4/0x2a0 get_signal+0x21a5/0x22e0 arch_do_signal_or_restart+0x79/0x5a0 exit_to_user_mode_prepare+0x131/0x1a0 syscall_exit_to_user_mode+0x1d/0x50 do_syscall_64+0x4c/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7fc6f64cfb19 Code: Unable to access opcode bytes at 0x7fc6f64cfaef. RSP: 002b:00007fc6f3a45188 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: 0000000000000007 RBX: 00007fc6f65e2f60 RCX: 00007fc6f64cfb19 RDX: 0000000000004042 RSI: 0000000020000100 RDI: ffffffffffffff9c RBP: 00007fc6f6529f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffef398248f R14: 00007fc6f3a45300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at default_idle+0xf/0x20 ---------------- Code disassembly (best guess): 0: 8b 44 24 10 mov 0x10(%rsp),%eax 4: e9 22 fe ff ff jmpq 0xfffffe2b 9: e8 fc 16 45 00 callq 0x45170a e: e9 52 fd ff ff jmpq 0xfffffd65 13: e8 c2 22 07 03 callq 0x30722da 18: 66 90 xchg %ax,%ax 1a: 90 nop 1b: 90 nop 1c: 90 nop 1d: 90 nop 1e: 90 nop 1f: 90 nop 20: 90 nop 21: 90 nop 22: 90 nop 23: 90 nop 24: 90 nop 25: 90 nop 26: 90 nop 27: 90 nop 28: 90 nop 29: 90 nop * 2a: f3 0f 1e fa endbr64 <-- trapping instruction 2e: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 35: fc ff df 38: 55 push %rbp 39: 53 push %rbx 3a: 48 89 fb mov %rdi,%rbx 3d: 48 rex.W 3e: 83 .byte 0x83 3f: c7 .byte 0xc7