syzbot

fatal error: fault
[signal SIGSEGV: segmentation violation code=0x80 addr=0x0 pc=0xe32d00]

goroutine 3335 gp=0xc001f7ddc0 m=25 mp=0xc000a09008 [running, locked to thread]:
runtime.throw({0x13f11e0?, 0x0?})
	bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:1101 +0x48 fp=0xc0022a5cb0 sp=0xc0022a5c80 pc=0x478c88
runtime.sigpanic()
	bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/signal_unix.go:939 +0x26c fp=0xc0022a5d10 sp=0xc0022a5cb0 pc=0x47b22c
gvisor.dev/gvisor/pkg/sentry/platform/kvm.rdDR6()
	pkg/sentry/platform/kvm/bluepill_amd64.s:106 fp=0xc0022a5d18 sp=0xc0022a5d10 pc=0xe32d00
gvisor.dev/gvisor/pkg/sentry/platform/kvm.readAndResetDR6()
	pkg/sentry/platform/kvm/machine_amd64.go:349 +0x13 fp=0xc0022a5d38 sp=0xc0022a5d18 pc=0xe2ebf3
gvisor.dev/gvisor/pkg/sentry/platform/kvm.(*vCPU).SwitchToUser(0xc000468008, {0xc0018cc4b0, 0xc0018cc588, 0xc0000ef100, 0x0, 0x0, {0x9, 0x1}}, 0xc00017c798)
	pkg/sentry/platform/kvm/machine_amd64.go:398 +0x1bc fp=0xc0022a5d88 sp=0xc0022a5d38 pc=0xe2edfc
gvisor.dev/gvisor/pkg/sentry/platform/kvm.(*platformContext).Switch(0xc00017c790, {0x1615bd0, 0xc000d3b208}, {0x160efb0, 0xc002648008}, 0xc0018cc4b0, 0x22a5e80?)
	pkg/sentry/platform/kvm/context.go:81 +0x1ad fp=0xc0022a5e28 sp=0xc0022a5d88 pc=0xe2944d
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc000d3b208?, 0xc000d3b208)
	pkg/sentry/kernel/task_run.go:252 +0x798 fp=0xc0022a5f30 sp=0xc0022a5e28 pc=0xa6f998
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000d3b208, 0x2a3)
	pkg/sentry/kernel/task_run.go:97 +0x214 fp=0xc0022a5fc0 sp=0xc0022a5f30 pc=0xa6eb94
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1()
	pkg/sentry/kernel/task_start.go:412 +0x25 fp=0xc0022a5fe0 sp=0xc0022a5fc0 pc=0xa78205
runtime.goexit({})
	src/runtime/asm_amd64.s:1700 +0x1 fp=0xc0022a5fe8 sp=0xc0022a5fe0 pc=0x4816e1
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 3332
	pkg/sentry/kernel/task_start.go:412 +0xc5