watchdog: BUG: soft lockup - CPU#0 stuck for 21s! [syz-executor.3:29652] Modules linked in: irq event stamp: 3153687 hardirqs last enabled at (3153686): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (3153687): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (3139898): [] __do_softirq+0x678/0x980 kernel/softirq.c:318 softirqs last disabled at (3139901): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (3139901): [] irq_exit+0x215/0x260 kernel/softirq.c:412 CPU: 0 PID: 29652 Comm: syz-executor.3 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 RIP: 0010:deref_stack_reg+0xa/0x1d0 arch/x86/kernel/unwind_orc.c:330 Code: 6e 00 e9 6e ff ff ff 4c 89 ef e8 21 e6 6e 00 0f b6 44 24 04 eb a0 66 2e 0f 1f 84 00 00 00 00 00 48 b8 00 00 00 00 00 fc ff df <41> 56 41 55 49 89 d5 41 54 49 89 fc 55 48 89 f5 53 48 83 ec 68 48 RSP: 0018:ffff8880ba007700 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: dffffc0000000000 RBX: 1ffff11017400eea RCX: ffff8880ba007ec0 RDX: ffff8880ba007880 RSI: ffff8880ba007ed0 RDI: ffff8880ba007838 RBP: 0000000000000002 R08: ffffffff8b91226c R09: ffffffff8b912262 R10: ffff8880ba007897 R11: 0000000000074071 R12: ffff8880ba007880 R13: ffff8880ba00786d R14: ffff8880ba007838 R15: ffffffff8b912268 FS: 00007ff3949fc700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c022193000 CR3: 0000000009e6d000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: unwind_next_frame+0x9fc/0x1400 arch/x86/kernel/unwind_orc.c:502 __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_trace+0x151/0x3b0 mm/slab.c:3668 __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 __netdev_alloc_skb+0x76/0x460 net/core/skbuff.c:407 netdev_alloc_skb include/linux/skbuff.h:2680 [inline] dev_alloc_skb include/linux/skbuff.h:2693 [inline] __ieee80211_beacon_get+0xc7d/0x1a30 net/mac80211/tx.c:4352 ieee80211_beacon_get_tim+0x88/0x890 net/mac80211/tx.c:4463 ieee80211_beacon_get include/net/mac80211.h:4484 [inline] mac80211_hwsim_beacon_tx+0xff/0x680 drivers/net/wireless/mac80211_hwsim.c:1577 __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:lock_page_memcg+0x6b/0x220 mm/memcontrol.c:1913 Code: 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 fc ff df 4c 89 fa 48 c1 ea 03 80 3c 02 00 <0f> 85 78 01 00 00 4c 8b 63 38 4d 89 fd 49 be 00 00 00 00 00 fc ff RSP: 0018:ffff888022b8f6c0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: dffffc0000000000 RBX: ffffea00009059c0 RCX: ffffffff81518c83 RDX: 1ffffd4000120b3f RSI: 0000000000000004 RDI: ffff8880ba022ad0 RBP: ffffea00009059c0 R08: 0000000000000000 R09: ffffed101740455a R10: ffff8880ba022ad3 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffffea00009059c0 R15: ffffea00009059f8 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: 0033:0x7ff396489639 Code: Bad RIP value. RSP: 002b:00007ff3949fc168 EFLAGS: 00000246 ORIG_RAX: 0000000000000097 RAX: 0000000000000000 RBX: 00007ff3965a9f80 RCX: 00007ff396489639 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 00007ff3964e47e1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe4e6caa3f R14: 00007ff3949fc300 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