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BUG: KMSAN: uninit-value in update_stack_state+0x974/0xb40 arch/x86/kernel/unwind_frame.c:238
CPU: 1 PID: 16595 Comm: syz-executor.0 Not tainted 5.8.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1df/0x240 lib/dump_stack.c:118
 kmsan_report+0xf7/0x1e0 mm/kmsan/kmsan_report.c:121
 __msan_warning+0x58/0xa0 mm/kmsan/kmsan_instr.c:215
 update_stack_state+0x974/0xb40 arch/x86/kernel/unwind_frame.c:238
 unwind_next_frame+0x8c6/0xed0 arch/x86/kernel/unwind_frame.c:305
 arch_stack_walk+0x33e/0x3e0 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x117/0x1a0 kernel/stacktrace.c:123
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:144 [inline]
 kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:310
 kmsan_memcpy_memmove_metadata+0x272/0x2e0 mm/kmsan/kmsan.c:247
 kmsan_memcpy_metadata+0xb/0x10 mm/kmsan/kmsan.c:267
 __msan_memcpy+0x43/0x50 mm/kmsan/kmsan_instr.c:116
 pskb_expand_head+0x38b/0x1b00 net/core/skbuff.c:1636
 netif_receive_generic_xdp net/core/dev.c:4616 [inline]
 do_xdp_generic+0x58c/0x24f0 net/core/dev.c:4735
 __netif_receive_skb_core+0x9a0/0x5890 net/core/dev.c:5107
 __netif_receive_skb_one_core net/core/dev.c:5279 [inline]
 __netif_receive_skb net/core/dev.c:5395 [inline]
 process_backlog+0x605/0x14e0 net/core/dev.c:6239
 napi_poll net/core/dev.c:6684 [inline]
 net_rx_action+0x746/0x1aa0 net/core/dev.c:6752
 __do_softirq+0x311/0x83d kernel/softirq.c:293
 asm_call_on_stack+0x12/0x20 arch/x86/entry/entry_64.S:711
 </IRQ>
 __run_on_irqstack arch/x86/include/asm/irq_stack.h:23 [inline]
 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:50 [inline]
 do_softirq_own_stack+0x7c/0xa0 arch/x86/kernel/irq_64.c:77
 invoke_softirq kernel/softirq.c:390 [inline]
 __irq_exit_rcu+0x226/0x270 kernel/softirq.c:420
 irq_exit_rcu+0xe/0x10 kernel/softirq.c:432
 sysvec_call_function_single+0x107/0x130 arch/x86/kernel/smp.c:243
 asm_sysvec_call_function_single+0x12/0x20 arch/x86/include/asm/idtentry.h:601
RIP: 0010:finish_lock_switch+0x2b/0x40 kernel/sched/core.c:3198
Code: 48 89 e5 53 48 89 fb e8 03 d2 a6 00 8b b8 88 0c 00 00 48 8b 00 48 85 c0 75 12 48 89 df e8 8d cb a6 00 c6 00 00 c6 03 00 fb 5b <5d> c3 e8 3e d1 a6 00 eb e7 66 90 66 2e 0f 1f 84 00 00 00 00 00 55
RSP: 0018:ffffbf24816c78b0 EFLAGS: 00000286
RAX: ffffa3069fdb61c0 RBX: ffffa304bb658000 RCX: 0000000000a9f173
RDX: ffffa3069fd171c0 RSI: 00000000000004a0 RDI: ffffa305afd941c0
RBP: ffffbf24816c78b0 R08: ffffe64e0000000f R09: ffffa305afffb000
R10: ffffa3049b3f9000 R11: 0000000000000000 R12: ffffa305adf63d00
R13: ffffa304bb6589d8 R14: ffffa305adf63d00 R15: ffffa305afd941c0
 finish_task_switch+0xd4/0x2f0 kernel/sched/core.c:3303
 context_switch kernel/sched/core.c:3467 [inline]
 __schedule+0x752/0x840 kernel/sched/core.c:4195
 schedule+0x260/0x330 kernel/sched/core.c:4270
 schedule_timeout+0x7f/0x550 kernel/time/timer.c:1873
 do_wait_for_common kernel/sched/completion.c:85 [inline]
 __wait_for_common kernel/sched/completion.c:106 [inline]
 wait_for_common+0x2d1/0x600 kernel/sched/completion.c:117
 wait_for_completion+0x3e/0x50 kernel/sched/completion.c:138
 kvm_vm_create_worker_thread+0x3d0/0x4c0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4895
 kvm_mmu_post_init_vm+0x85/0x120 arch/x86/kvm/mmu/mmu.c:6384
 kvm_arch_post_init_vm+0x41/0x50 arch/x86/kvm/x86.c:9892
 kvm_create_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:744 [inline]
 kvm_dev_ioctl_create_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:3850 [inline]
 kvm_dev_ioctl+0x26c8/0x2ad0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3902
 __do_compat_sys_ioctl fs/ioctl.c:847 [inline]
 __se_compat_sys_ioctl+0x57c/0xed0 fs/ioctl.c:798
 __ia32_compat_sys_ioctl+0x4a/0x70 fs/ioctl.c:798
 do_syscall_32_irqs_on arch/x86/entry/common.c:430 [inline]
 __do_fast_syscall_32+0x2aa/0x400 arch/x86/entry/common.c:477
 do_fast_syscall_32+0x6b/0xd0 arch/x86/entry/common.c:505
 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:554
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
RIP: 0023:0xf7f7a549
Code: Bad RIP value.
RSP: 002b:00000000f5d750cc EFLAGS: 00000296 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000000ae01
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000

Local variable ----filename@process_measurement created at:
 process_measurement+0x1c0/0x2ce0 security/integrity/ima/ima_main.c:198
 process_measurement+0x1c0/0x2ce0 security/integrity/ima/ima_main.c:198
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