SIGSEGV: segmentation violation
PC=0x9ae460 m=33 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-2"]: exit status 128
I0223 16:35:03.624649   12059 x:0] ***************************
I0223 16:35:03.624734   12059 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-2]
I0223 16:35:03.624751   12059 x:0] Git Revision: b75aa515044367094e762985a4b1a1f0580e3ad6
I0223 16:35:03.624757   12059 x:0] PID: 12059
I0223 16:35:03.624765   12059 x:0] UID: 0, GID: 0
I0223 16:35:03.624769   12059 x:0] Configuration:
I0223 16:35:03.624773   12059 x:0] 		RootDir: /syzkaller/managers/kvm-proxy-overlay-sandbox/workdir/gvisor_root
I0223 16:35:03.624777   12059 x:0] 		Platform: kvm
I0223 16:35:03.624784   12059 x:0] 		FileAccess: exclusive, overlay: true
I0223 16:35:03.624804   12059 x:0] 		Network: sandbox, logging: false
I0223 16:35:03.624811   12059 x:0] 		Strace: false, max size: 1024, syscalls: []
I0223 16:35:03.624816   12059 x:0] ***************************
D0223 16:35:03.624832   12059 x:0] Load container "/syzkaller/managers/kvm-proxy-overlay-sandbox/workdir/gvisor_root" "ci-gvisor-kvm-proxy-overlay-sandbox-2"
D0223 16:35:03.625587   12059 x:0] Signal container "ci-gvisor-kvm-proxy-overlay-sandbox-2": signal 0
D0223 16:35:03.625609   12059 x:0] Signal sandbox "ci-gvisor-kvm-proxy-overlay-sandbox-2"
D0223 16:35:03.625614   12059 x:0] Connecting to sandbox "ci-gvisor-kvm-proxy-overlay-sandbox-2"
D0223 16:35:03.625817   12059 x:0] urpc: successfully marshalled 117 bytes.
I0223 16:35:03.794865   12059 x:0] Found sandbox "ci-gvisor-kvm-proxy-overlay-sandbox-2", PID: 8417
I0223 16:35:03.794901   12059 x:0] Retrieving sandbox stacks
D0223 16:35:03.794906   12059 x:0] Stacks sandbox "ci-gvisor-kvm-proxy-overlay-sandbox-2"
D0223 16:35:03.794911   12059 x:0] Connecting to sandbox "ci-gvisor-kvm-proxy-overlay-sandbox-2"
D0223 16:35:03.794974   12059 x:0] urpc: successfully marshalled 36 bytes.
W0223 16:35:03.816284   12059 x:0] FATAL ERROR: retrieving stacks: getting sandbox "ci-gvisor-kvm-proxy-overlay-sandbox-2" stacks: urpc method "debug.Stacks" failed: connection reset by peer
retrieving stacks: getting sandbox "ci-gvisor-kvm-proxy-overlay-sandbox-2" stacks: urpc method "debug.Stacks" failed: connection reset by peer
goroutine 206 [syscall, locked to thread]:
gvisor.googlesource.com/gvisor/pkg/sentry/platform/kvm.(*vCPU).SwitchToUser(0xc000176400, 0xc00079b680, 0xc0006e7300, 0xc000a20090, 0x100070000, 0xc0006ed1e8, 0x23, 0x7f67b6f53ac0, 0x0)
	pkg/sentry/platform/kvm/machine_amd64.go:235 +0xbe fp=0xc080d09da8 sp=0xc080d09d38 pc=0x9de74e
gvisor.googlesource.com/gvisor/pkg/sentry/platform/kvm.(*context).Switch(0xc0006ed1e0, 0xd69300, 0xc000bb2000, 0xd771e0, 0xc00079b680, 0x7f67ffffffff, 0xc0006ed1e8, 0x0, 0x0, 0x0)
	pkg/sentry/platform/kvm/context.go:71 +0x1fd fp=0xc080d09e68 sp=0xc080d09da8 pc=0x9d3d0d
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc0006fb500, 0xd5c980, 0x0)
	pkg/sentry/kernel/task_run.go:205 +0x348 fp=0xc080d09f88 sp=0xc080d09e68 pc=0x784a08
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).run(0xc0006fb500, 0x45)
	pkg/sentry/kernel/task_run.go:91 +0x149 fp=0xc080d09fd0 sp=0xc080d09f88 pc=0x784349
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=0xc080d09fd8 sp=0xc080d09fd0 pc=0x457fa1
created by gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:279 +0xfe