mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.0:21670] Modules linked in: irq event stamp: 3112889 hardirqs last enabled at (3112888): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (3112889): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (3098496): [] __do_softirq+0x678/0x980 kernel/softirq.c:318 softirqs last disabled at (3098499): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (3098499): [] irq_exit+0x215/0x260 kernel/softirq.c:412 CPU: 0 PID: 21670 Comm: syz-executor.0 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 RIP: 0010:unwind_next_frame+0xa24/0x1400 arch/x86/kernel/unwind_orc.c:508 Code: ff ff 84 c0 0f 84 72 fa ff ff 48 b8 00 00 00 00 00 fc ff df 48 8b 14 24 4c 8b 64 24 68 4c 8b 44 24 30 48 c1 ea 03 80 3c 02 00 <0f> 85 8c 09 00 00 48 8b 54 24 08 4d 89 66 38 48 b8 00 00 00 00 00 RSP: 0018:ffff8880ba007758 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: dffffc0000000000 RBX: 1ffff11017400ef4 RCX: 0000000000000000 RDX: 1ffff11017400f18 RSI: ffff8880ba0076e8 RDI: ffff88801cb3f738 RBP: 0000000000000001 R08: ffffffff8b992330 R09: ffffffff8b9922f6 R10: ffff8880ba0078e7 R11: 0000000000074071 R12: ffff88801cb3f740 R13: ffff8880ba0078bd R14: ffff8880ba007888 R15: ffffffff8b99232c FS: 00007f3537d36700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055555585d708 CR3: 0000000009e6d000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __save_stack_trace+0x9f/0x190 arch/x86/kernel/stacktrace.c:44 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 kmem_cache_alloc_node+0x146/0x3b0 mm/slab.c:3649 __alloc_skb+0x71/0x560 net/core/skbuff.c:193 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:rcu_read_lock include/linux/rcupdate.h:628 [inline] RIP: 0010:lock_page_memcg+0x47/0x220 mm/memcontrol.c:1908 Code: c0 31 f6 68 b0 59 9d 81 b9 02 00 00 00 48 c7 c7 a0 5f f8 89 e8 ba f8 ad ff e8 05 44 b3 ff 5a 85 c0 74 0d 80 3d 1d 33 71 09 00 <0f> 84 e0 00 00 00 0f 1f 44 00 00 4c 8d 7b 38 48 b8 00 00 00 00 00 RSP: 0018:ffff88801cb3f6c0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000001 RBX: ffffea00025f1580 RCX: 0000000000000001 RDX: ffffffff819d59b0 RSI: 0000000000000002 RDI: ffff888018954e84 RBP: ffffea00025f1580 R08: 00000000c985a8da R09: 0000000000000001 R10: ffff888018954eb0 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffffea00025f1580 R15: 00007f3539235000 page_remove_file_rmap+0x36/0xa30 mm/rmap.c:1212 page_remove_rmap+0xe5/0x120 mm/rmap.c:1297 zap_pte_range mm/memory.c:1350 [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+0x147d/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: 0033:0x7f35393c35f9 Code: Bad RIP value. RSP: 002b:00007f3537d36168 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: 000000000000000a RBX: 00007f35394e3f80 RCX: 00007f35393c35f9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000200 RBP: 00007f353941e7b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffef48b1f1f R14: 00007f3537d36300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60