wlan1: No active IBSS STAs - trying to scan for other IBSS networks with same SSID (merge) watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.0:2488] Modules linked in: irq event stamp: 2913457 hardirqs last enabled at (2913456): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (2913457): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (2910374): [] __do_softirq+0x678/0x980 kernel/softirq.c:318 softirqs last disabled at (2910377): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (2910377): [] irq_exit+0x215/0x260 kernel/softirq.c:412 CPU: 1 PID: 2488 Comm: syz-executor.0 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 RIP: 0010:mac80211_hwsim_tx_frame_no_nl.isra.0+0xbe8/0x1330 drivers/net/wireless/mac80211_hwsim.c:1361 Code: 44 24 1f 45 84 ff 41 0f 45 c7 88 44 24 1f e8 7f 61 bb fc 48 8d bb 08 14 00 00 4c 8b 54 24 08 48 89 f8 48 c1 e8 03 80 3c 28 00 <0f> 85 fc 06 00 00 48 8b 44 24 38 49 8d 7a 28 ba 30 00 00 00 4c 89 RSP: 0018:ffff8880ba107c38 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 1ffff1100a3d2905 RBX: ffff888051e93420 RCX: ffffffff84a723dc RDX: 0000000000000100 RSI: ffffffff84a723f1 RDI: ffff888051e94828 RBP: dffffc0000000000 R08: 0000000000000000 R09: 0000000000000000 R10: ffff888095783200 R11: 0000000000000000 R12: ffff888095783340 R13: ffff888052063360 R14: ffff888052063478 R15: 0000000000000000 FS: 00007fb1d6fba700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555555ec6708 CR3: 0000000009e6d000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: mac80211_hwsim_tx_frame+0x12b/0x210 drivers/net/wireless/mac80211_hwsim.c:1556 mac80211_hwsim_beacon_tx+0x3f8/0x680 drivers/net/wireless/mac80211_hwsim.c:1595 __iterate_interfaces+0x2e1/0x4a0 net/mac80211/util.c:614 ieee80211_iterate_active_interfaces_atomic+0x8d/0x170 net/mac80211/util.c:650 mac80211_hwsim_beacon+0xc9/0x190 drivers/net/wireless/mac80211_hwsim.c:1615 __tasklet_hrtimer_trampoline+0x29/0xa0 kernel/softirq.c:601 tasklet_action_common.constprop.0+0x265/0x360 kernel/softirq.c:522 __do_softirq+0x265/0x980 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x215/0x260 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1098 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894 RIP: 0010:__tlb_remove_page_size+0xf8/0x470 mm/memory.c:316 Code: 28 48 8d 7d 08 48 89 fa 48 c1 ea 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e e0 02 00 00 48 b8 00 00 00 00 00 fc ff df 44 8b 65 08 <4a> 8d 7c e5 10 45 8d 6c 24 01 48 89 fa 48 c1 ea 03 44 89 6d 08 80 RSP: 0018:ffff88809559f738 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: dffffc0000000000 RBX: ffff88809559f9b0 RCX: ffffffff818b3334 RDX: 1ffff11008b63a01 RSI: ffffffff818b3342 RDI: ffff888045b1d008 RBP: ffff888045b1d000 R08: 0000000000000000 R09: 0000000000001000 R10: 0000000000000004 R11: 0000000000000000 R12: 0000000000000011 R13: ffffea00025a0cc0 R14: ffffea00025a0cc0 R15: ffff88809559f9d8 __tlb_remove_page include/asm-generic/tlb.h:161 [inline] zap_pte_range mm/memory.c:1353 [inline] zap_pmd_range mm/memory.c:1463 [inline] zap_pud_range mm/memory.c:1492 [inline] zap_p4d_range mm/memory.c:1513 [inline] unmap_page_range+0x14e7/0x2c50 mm/memory.c:1534 unmap_single_vma+0x198/0x300 mm/memory.c:1579 unmap_vmas+0xa9/0x180 mm/memory.c:1609 exit_mmap+0x2b9/0x530 mm/mmap.c:3093 __mmput kernel/fork.c:1016 [inline] mmput+0x14e/0x4a0 kernel/fork.c:1037 exit_mm kernel/exit.c:549 [inline] do_exit+0xaec/0x2be0 kernel/exit.c:857 do_group_exit+0x125/0x310 kernel/exit.c:967 get_signal+0x3f2/0x1f70 kernel/signal.c:2589 do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fb1d86475a9 Code: Bad RIP value. RSP: 002b:00007fb1d6fba168 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 00007fb1d8767f80 RCX: 00007fb1d86475a9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000006 RBP: 00007fb1d86a2580 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd0b2213df R14: 00007fb1d6fba300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60