watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz-executor1:14137] Modules linked in: irq event stamp: 70240 hardirqs last enabled at (70239): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (70240): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (17270): [] __do_softirq+0x7ba/0xad8 kernel/softirq.c:318 softirqs last disabled at (17205): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (17205): [] irq_exit+0x17f/0x1c0 kernel/softirq.c:412 CPU: 0 PID: 14137 Comm: syz-executor1 Not tainted 4.19.0-rc3+ #142 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:rep_nop arch/x86/include/asm/processor.h:665 [inline] RIP: 0010:cpu_relax arch/x86/include/asm/processor.h:670 [inline] RIP: 0010:csd_lock_wait kernel/smp.c:108 [inline] RIP: 0010:smp_call_function_single+0x25a/0x660 kernel/smp.c:302 Code: e8 03 4c 01 f0 c6 00 f8 48 89 44 24 28 e8 8e 4d 0c 00 45 85 e4 74 67 48 8b 44 24 28 48 83 c3 18 49 89 c4 e8 68 4c 0c 00 f3 90 <48> 89 d8 41 c6 04 24 04 48 c1 e8 03 42 0f b6 04 30 84 c0 74 08 3c RSP: 0018:ffff88019117f420 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 RAX: ffff88019112c080 RBX: ffff88019117f498 RCX: ffffffff81728839 RDX: 0000000000000000 RSI: ffffffff817287e8 RDI: 0000000000000005 RBP: ffff88019117f570 R08: ffff88019112c080 R09: ffffed003b5e5ba0 R10: ffffed003b5e5ba0 R11: ffff8801daf2dd07 R12: ffffed003222fea0 R13: 1ffff1003222fe8c R14: dffffc0000000000 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8801dae00000(0063) knlGS:0000000008be8900 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000f5ebedb0 CR3: 00000001d929b000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: task_function_call+0x189/0x280 kernel/events/core.c:115 event_function_call+0x305/0x600 kernel/events/core.c:277 perf_remove_from_context+0xa3/0x1d0 kernel/events/core.c:2105 perf_event_release_kernel+0x295/0xfa0 kernel/events/core.c:4555 perf_release+0x37/0x50 kernel/events/core.c:4642 __fput+0x385/0xa30 fs/file_table.c:278 ____fput+0x15/0x20 fs/file_table.c:309 task_work_run+0x1e8/0x2a0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:193 [inline] exit_to_usermode_loop+0x318/0x380 arch/x86/entry/common.c:166 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_32_irqs_on arch/x86/entry/common.c:341 [inline] do_fast_syscall_32+0xcd5/0xfb2 arch/x86/entry/common.c:397 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 RIP: 0023:0xf7f25ca9 Code: 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 0c 24 c3 8b 1c 24 c3 90 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 002b:000000000845fdac EFLAGS: 00000216 ORIG_RAX: 0000000000000006 RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 RDX: 0000000000000004 RSI: 0000000000000010 RDI: 0000000000000000 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 14163 Comm: syz-executor0 Not tainted 4.19.0-rc3+ #142 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:native_set_debugreg+0x31/0x40 arch/x86/include/asm/debugreg.h:74 Code: 77 2d 89 ff 48 8b 04 fd a0 da 07 88 e9 28 96 aa 06 0f 23 fe 5d c3 0f 23 c6 5d c3 0f 23 ce 5d c3 0f 23 d6 5d c3 0f 23 de 5d c3 <0f> 23 f6 5d c3 0f 0b 0f 1f 84 00 00 00 00 00 55 83 ff 07 48 89 e5 RSP: 0018:ffff880195c26fb0 EFLAGS: 00000097 RAX: ffffffff8135d9f1 RBX: ffff880190538180 RCX: 1ffff100320a78b7 RDX: 0000000040000002 RSI: 0000000000000000 RDI: 0000000000000006 RBP: ffff880195c26fb0 R08: ffff8801bf7485c0 R09: fffff52001dc5247 R10: fffff52001dc5247 R11: ffffc9000ee2923b R12: ffffffff89171000 R13: 0000000000000000 R14: ffffc9000ee297e0 R15: ffff8801bf7485c0 FS: 0000000000000000(0000) GS:ffff8801daf00000(0063) knlGS:00000000f5f7eb40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00007fc794aac6f0 CR3: 00000001c79b4000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: set_debugreg arch/x86/include/asm/paravirt.h:42 [inline] kvm_arch_vcpu_put+0x2ef/0x420 arch/x86/kvm/x86.c:3189 kvm_sched_out+0x91/0xb0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3985 __fire_sched_out_preempt_notifiers kernel/sched/core.c:2497 [inline] fire_sched_out_preempt_notifiers kernel/sched/core.c:2505 [inline] prepare_task_switch kernel/sched/core.c:2611 [inline] context_switch kernel/sched/core.c:2790 [inline] __schedule+0xf8c/0x1ed0 kernel/sched/core.c:3473 preempt_schedule_notrace+0x70/0x130 kernel/sched/core.c:3671 ___preempt_schedule_notrace+0x16/0x31 rcu_is_watching+0x23/0x30 kernel/rcu/tree.c:1026 rcu_read_lock_held+0x87/0xc0 kernel/rcu/update.c:281 cache_from_memcg_idx mm/slab.h:255 [inline] memcg_kmem_get_cache+0x758/0x9d0 mm/memcontrol.c:2542 slab_pre_alloc_hook mm/slab.h:428 [inline] slab_alloc mm/slab.c:3378 [inline] kmem_cache_alloc+0x193/0x730 mm/slab.c:3552 kmem_cache_zalloc include/linux/slab.h:697 [inline] mmu_topup_memory_cache arch/x86/kvm/mmu.c:917 [inline] mmu_topup_memory_caches+0x2ec/0x390 arch/x86/kvm/mmu.c:970 kvm_mmu_load+0x21/0xfa0 arch/x86/kvm/mmu.c:4952 kvm_mmu_reload arch/x86/kvm/mmu.h:86 [inline] vcpu_enter_guest+0x3dee/0x62e0 arch/x86/kvm/x86.c:7513 vcpu_run arch/x86/kvm/x86.c:7711 [inline] kvm_arch_vcpu_ioctl_run+0x375/0x16e0 arch/x86/kvm/x86.c:7888 kvm_vcpu_ioctl+0x72b/0x1150 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2590 kvm_vcpu_compat_ioctl+0x210/0x4a0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2785 __do_compat_sys_ioctl fs/compat_ioctl.c:1419 [inline] __se_compat_sys_ioctl fs/compat_ioctl.c:1365 [inline] __ia32_compat_sys_ioctl+0x20e/0x630 fs/compat_ioctl.c:1365 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline] do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 RIP: 0023:0xf7f82ca9 Code: 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 0c 24 c3 8b 1c 24 c3 90 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 002b:00000000f5f7e0cc EFLAGS: 00000296 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 000000000000ae80 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000