mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium 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.1:12672] Modules linked in: irq event stamp: 3480549 hardirqs last enabled at (3480548): [] slab_alloc_node mm/slab.c:3334 [inline] hardirqs last enabled at (3480548): [] kmem_cache_alloc_node_trace+0x2da/0x3b0 mm/slab.c:3666 hardirqs last disabled at (3480549): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (3477194): [] __do_softirq+0x678/0x980 kernel/softirq.c:318 softirqs last disabled at (3477199): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (3477199): [] irq_exit+0x215/0x260 kernel/softirq.c:412 CPU: 1 PID: 12672 Comm: syz-executor.1 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 RIP: 0010:unwind_get_return_address arch/x86/kernel/unwind_orc.c:297 [inline] RIP: 0010:unwind_get_return_address+0x66/0x90 arch/x86/kernel/unwind_orc.c:292 Code: 89 ea 48 c1 ea 03 80 3c 02 00 75 32 48 8b 7b 48 e8 9f a0 15 00 85 c0 74 d3 48 b8 00 00 00 00 00 fc ff df 48 89 ea 48 c1 ea 03 <80> 3c 02 00 75 18 48 8b 43 48 5b 5d c3 e8 c8 e4 6e 00 eb a8 48 89 RSP: 0018:ffff8880ba107838 EFLAGS: 00000a02 ORIG_RAX: ffffffffffffff13 RAX: dffffc0000000000 RBX: ffff8880ba107860 RCX: 0000000000000000 RDX: 1ffff11017420f15 RSI: ffff8880ba1076c0 RDI: ffffffff81905e14 RBP: ffff8880ba1078a8 R08: 0000000000000001 R09: 0000000000000001 R10: ffff8880ba1078bf R11: 0000000000074071 R12: ffff8880ba1078f8 R13: 0000000000000000 R14: ffff88813bff0940 R15: 0000000000000200 FS: 00007f4351fba700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30f24000 CR3: 000000009b4c5000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __save_stack_trace+0xaf/0x190 arch/x86/kernel/stacktrace.c:45 save_stack mm/kasan/kasan.c:448 [inline] set_track mm/kasan/kasan.c:460 [inline] kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:553 slab_post_alloc_hook mm/slab.h:445 [inline] slab_alloc_node mm/slab.c:3340 [inline] kmem_cache_alloc_node_trace+0x13c/0x3b0 mm/slab.c:3666 __do_kmalloc_node mm/slab.c:3688 [inline] __kmalloc_node_track_caller+0x38/0x70 mm/slab.c:3703 __kmalloc_reserve net/core/skbuff.c:137 [inline] __alloc_skb+0xae/0x560 net/core/skbuff.c:205 skb_copy+0x139/0x2f0 net/core/skbuff.c:1358 mac80211_hwsim_tx_frame_no_nl.isra.0+0xb8a/0x1330 drivers/net/wireless/mac80211_hwsim.c:1353 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:arch_local_irq_enable arch/x86/include/asm/paravirt.h:800 [inline] RIP: 0010:flush_tlb_mm_range+0x2ad/0x320 arch/x86/mm/tlb.c:724 Code: c0 98 82 f1 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 4f 48 83 3d 24 f4 c5 08 00 74 2d fb 66 0f 1f 44 00 00 43 fe ff ff e8 93 ae d4 ff e9 d8 fe ff ff 0f 0b 48 c7 c7 34 e1 RSP: 0018:ffff88804840f780 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff13e3053 RBX: ffff8880506a8100 RCX: 1ffff110168bf9a7 RDX: dffffc0000000000 RSI: ffff8880b45fcd18 RDI: ffff8880b45fccc4 RBP: 0000000020097000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff11009081ef0 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000020096000 flush_tlb_page arch/x86/include/asm/tlbflush.h:576 [inline] ptep_clear_flush+0x123/0x160 mm/pgtable-generic.c:87 try_to_unmap_one+0x10f9/0x2ce0 mm/rmap.c:1513 rmap_walk_anon+0x472/0xa80 mm/rmap.c:1842 rmap_walk+0x124/0x190 mm/rmap.c:1913 try_to_unmap+0x308/0x380 mm/rmap.c:1731 __unmap_and_move mm/migrate.c:1102 [inline] unmap_and_move mm/migrate.c:1189 [inline] migrate_pages+0xd9e/0x2fe0 mm/migrate.c:1419 do_mbind+0xaaf/0xd60 mm/mempolicy.c:1289 kernel_mbind mm/mempolicy.c:1409 [inline] __do_sys_mbind mm/mempolicy.c:1416 [inline] __se_sys_mbind mm/mempolicy.c:1412 [inline] __x64_sys_mbind+0x235/0x290 mm/mempolicy.c:1412 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f4353646669 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f4351fba168 EFLAGS: 00000246 ORIG_RAX: 00000000000000ed RAX: ffffffffffffffda RBX: 00007f4353767f80 RCX: 00007f4353646669 RDX: 0000000000000004 RSI: 0000000000800000 RDI: 0000000020001000 RBP: 00007f43536a1560 R08: 0000000000000013 R09: 0000000000000002 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe9e55621f R14: 00007f4351fba300 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