SIGSEGV: segmentation violation
PC=0x9371b0 m=22 sigcode=128

DIAGNOSIS:


Error collecting stacks: failed to run ["/syzkaller/managers/kvm-proxy-overlay-sandbox/current/image" "-root" "/syzkaller/managers/kvm-proxy-overlay-sandbox/workdir/gvisor_root" "-watchdog-action=panic" "-network=none" "-debug" "-platform=kvm" "-file-access=exclusive" "-overlay" "-network=sandbox" "debug" "-stacks" "ci-gvisor-kvm-proxy-overlay-sandbox-1"]: exit status 128
I0109 12:44:55.363981   28576 x:0] ***************************
I0109 12:44:55.364033   28576 x:0] Args: [/syzkaller/managers/kvm-proxy-overlay-sandbox/current/image -root /syzkaller/managers/kvm-proxy-overlay-sandbox/workdir/gvisor_root -watchdog-action=panic -network=none -debug -platform=kvm -file-access=exclusive -overlay -network=sandbox debug -stacks ci-gvisor-kvm-proxy-overlay-sandbox-1]
I0109 12:44:55.364049   28576 x:0] Git Revision: dd761c170cc2d44eee20757a6088f80a9322342c
I0109 12:44:55.364054   28576 x:0] PID: 28576
I0109 12:44:55.364060   28576 x:0] UID: 0, GID: 0
I0109 12:44:55.364064   28576 x:0] Configuration:
I0109 12:44:55.364067   28576 x:0] 		RootDir: /syzkaller/managers/kvm-proxy-overlay-sandbox/workdir/gvisor_root
I0109 12:44:55.364070   28576 x:0] 		Platform: kvm
I0109 12:44:55.364076   28576 x:0] 		FileAccess: exclusive, overlay: true
I0109 12:44:55.364083   28576 x:0] 		Network: sandbox, logging: false
I0109 12:44:55.364089   28576 x:0] 		Strace: false, max size: 1024, syscalls: []
I0109 12:44:55.364093   28576 x:0] ***************************
D0109 12:44:55.364109   28576 x:0] Load container "/syzkaller/managers/kvm-proxy-overlay-sandbox/workdir/gvisor_root" "ci-gvisor-kvm-proxy-overlay-sandbox-1"
D0109 12:44:55.364665   28576 x:0] Signal container "ci-gvisor-kvm-proxy-overlay-sandbox-1": signal 0
D0109 12:44:55.364683   28576 x:0] Signal sandbox "ci-gvisor-kvm-proxy-overlay-sandbox-1"
D0109 12:44:55.364688   28576 x:0] Connecting to sandbox "ci-gvisor-kvm-proxy-overlay-sandbox-1"
D0109 12:44:55.364822   28576 x:0] urpc: successfully marshalled 117 bytes.
I0109 12:44:55.556832   28576 x:0] Found sandbox "ci-gvisor-kvm-proxy-overlay-sandbox-1", PID: 9541
I0109 12:44:55.556857   28576 x:0] Retrieving sandbox stacks
D0109 12:44:55.556861   28576 x:0] Stacks sandbox "ci-gvisor-kvm-proxy-overlay-sandbox-1"
D0109 12:44:55.556866   28576 x:0] Connecting to sandbox "ci-gvisor-kvm-proxy-overlay-sandbox-1"
D0109 12:44:55.556936   28576 x:0] urpc: successfully marshalled 36 bytes.
W0109 12:44:55.567084   28576 x:0] FATAL ERROR: error retrieving stacks: err getting sandbox "ci-gvisor-kvm-proxy-overlay-sandbox-1" stacks: urpc method "debug.Stacks" failed: connection reset by peer
error retrieving stacks: err getting sandbox "ci-gvisor-kvm-proxy-overlay-sandbox-1" stacks: urpc method "debug.Stacks" failed: connection reset by peer
goroutine 64 [syscall, locked to thread]:
gvisor.googlesource.com/gvisor/pkg/sentry/platform/kvm.(*vCPU).SwitchToUser(0xc0005d4000, 0xc000241e60, 0xc0006cb900, 0xc00018c690, 0x100070000, 0xc0001bab08, 0x3e, 0x1b, 0x9)
	pkg/sentry/platform/kvm/machine_amd64.go:235 +0xbe fp=0xc080bcbda8 sp=0xc080bcbd38 pc=0x96749e
gvisor.googlesource.com/gvisor/pkg/sentry/platform/kvm.(*context).Switch(0xc0001bab00, 0xd2d4a0, 0xc0001f6480, 0xd3b920, 0xc000241e60, 0x7fcbffffffff, 0xc0001bab08, 0x0, 0x0, 0x0)
	pkg/sentry/platform/kvm/context.go:71 +0x1fd fp=0xc080bcbe68 sp=0xc080bcbda8 pc=0x95ca5d
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc00067d500, 0xd20b00, 0x0)
	pkg/sentry/kernel/task_run.go:205 +0x348 fp=0xc080bcbf88 sp=0xc080bcbe68 pc=0x73df18
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).run(0xc00067d500, 0x18)
	pkg/sentry/kernel/task_run.go:91 +0x149 fp=0xc080bcbfd0 sp=0xc080bcbf88 pc=0x73d859
runtime.goexit()
	bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/linux_amd64_pure_stripped/stdlib%/src/runtime/asm_amd64.s:1333 +0x1 fp=0xc080bcbfd8 sp=0xc080bcbfd0 pc=0x457fa1
created by gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:279 +0xfe