panic: Decrementing non-positive ref count 0xc00079c858, owned by tmpfs.inode panic: Decrementing non-positive ref count 0xc00079c858, owned by tmpfs.inode goroutine 292 [running]: panic({0x298360?, 0xc0009460f0?}) GOROOT/src/runtime/panic.go:1017 +0x3ac fp=0xc00072a7b0 sp=0xc00072a700 pc=0x12bcd6c gvisor.dev/gvisor/pkg/sentry/fsimpl/tmpfs.(*inodeRefs).DecRef(0xc00079c858, 0xc00072a828) bazel-out/k8-fastbuild-ST-3dcbe13c9b87/bin/pkg/sentry/fsimpl/tmpfs/inode_refs.go:126 +0x12c fp=0xc00072a818 sp=0xc00072a7b0 pc=0x1a702ac gvisor.dev/gvisor/pkg/sentry/fsimpl/tmpfs.(*inode).decRef(...) pkg/sentry/fsimpl/tmpfs/tmpfs.go:599 gvisor.dev/gvisor/pkg/sentry/fsimpl/tmpfs.(*dentry).DecRef(0xc00079c800, {0x7efef8, 0xc00002ca80}) pkg/sentry/fsimpl/tmpfs/tmpfs.go:457 +0x8b fp=0xc00072a858 sp=0xc00072a818 pc=0x1a7a12b gvisor.dev/gvisor/pkg/sentry/vfs.(*Dentry).DecRef(0xc00079c800, {0x7efef8, 0xc00002ca80}) pkg/sentry/vfs/dentry.go:156 +0x5a fp=0xc00072a880 sp=0xc00072a858 pc=0x182feda gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).unlockMounts(0xc000266c58, {0x7efef8, 0xc00002ca80}) pkg/sentry/vfs/vfs.go:1030 +0x1e9 fp=0xc00072a958 sp=0xc00072a880 pc=0x186bb29 gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).destroy.func1() pkg/sentry/vfs/mount.go:826 +0x50 fp=0xc00072a998 sp=0xc00072a958 pc=0x184e870 runtime.deferreturn() GOROOT/src/runtime/panic.go:477 +0x31 fp=0xc00072a9d0 sp=0xc00072a998 pc=0x12bbeb1 gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).destroy(0xc0001defd0, {0x7efef8, 0xc00002ca80}) pkg/sentry/vfs/mount.go:839 +0x4ad fp=0xc00072ab08 sp=0xc00072a9d0 pc=0x184e78d gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).DecRef(0xc0001defd0, {0x7efef8, 0xc00002ca80}) pkg/sentry/vfs/mount.go:820 +0x79 fp=0xc00072ab30 sp=0xc00072ab08 pc=0x184e299 gvisor.dev/gvisor/pkg/sentry/vfs.VirtualDentry.DecRef({0xc0001defd0?, 0xc000950800?}, {0x7efef8, 0xc00002ca80}) pkg/sentry/vfs/vfs.go:1086 +0x85 fp=0xc00072ab68 sp=0xc00072ab30 pc=0x186bcc5 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).UmountAt.func1() pkg/sentry/vfs/mount.go:575 +0x5e fp=0xc00072abb8 sp=0xc00072ab68 pc=0x184cf9e panic({0x298360?, 0xc0009460d0?}) GOROOT/src/runtime/panic.go:920 +0x270 fp=0xc00072ac68 sp=0xc00072abb8 pc=0x12bcc30 gvisor.dev/gvisor/pkg/sentry/fsimpl/tmpfs.(*inodeRefs).DecRef(0xc00079c858, 0xc00072ace0) bazel-out/k8-fastbuild-ST-3dcbe13c9b87/bin/pkg/sentry/fsimpl/tmpfs/inode_refs.go:126 +0x12c fp=0xc00072acd0 sp=0xc00072ac68 pc=0x1a702ac gvisor.dev/gvisor/pkg/sentry/fsimpl/tmpfs.(*inode).decRef(...) pkg/sentry/fsimpl/tmpfs/tmpfs.go:599 gvisor.dev/gvisor/pkg/sentry/fsimpl/tmpfs.(*dentry).DecRef(0xc00079c800, {0x7efef8, 0xc00002ca80}) pkg/sentry/fsimpl/tmpfs/tmpfs.go:457 +0x8b fp=0xc00072ad10 sp=0xc00072acd0 pc=0x1a7a12b gvisor.dev/gvisor/pkg/sentry/vfs.(*Dentry).DecRef(0xc00079c800, {0x7efef8, 0xc00002ca80}) pkg/sentry/vfs/dentry.go:156 +0x5a fp=0xc00072ad38 sp=0xc00072ad10 pc=0x182feda gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).unlockMounts(0xc000266c58, {0x7efef8, 0xc00002ca80}) pkg/sentry/vfs/vfs.go:1030 +0x1e9 fp=0xc00072ae10 sp=0xc00072ad38 pc=0x186bb29 gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).destroy.func1() pkg/sentry/vfs/mount.go:826 +0x50 fp=0xc00072ae50 sp=0xc00072ae10 pc=0x184e870 runtime.deferreturn() GOROOT/src/runtime/panic.go:477 +0x31 fp=0xc00072ae88 sp=0xc00072ae50 pc=0x12bbeb1 gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).destroy(0xc0001defd0, {0x7efef8, 0xc00002ca80}) pkg/sentry/vfs/mount.go:839 +0x4ad fp=0xc00072afc0 sp=0xc00072ae88 pc=0x184e78d gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).DecRef(0xc0001defd0, {0x7efef8, 0xc00002ca80}) pkg/sentry/vfs/mount.go:820 +0x79 fp=0xc00072afe8 sp=0xc00072afc0 pc=0x184e299 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).unlockMounts(0xc000266c58, {0x7efef8, 0xc00002ca80}) pkg/sentry/vfs/vfs.go:1030 +0x1e9 fp=0xc00072b0c0 sp=0xc00072afe8 pc=0x186bb29 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).UmountAt.func2() pkg/sentry/vfs/mount.go:578 +0x50 fp=0xc00072b100 sp=0xc00072b0c0 pc=0x184cf10 runtime.deferreturn() GOROOT/src/runtime/panic.go:477 +0x31 fp=0xc00072b138 sp=0xc00072b100 pc=0x12bbeb1 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).UmountAt(0xc000266c58, {0x7efef8, 0xc00002ca80}, 0xc0008f6e40, 0xc0006c2e00?, 0xc00072b360) pkg/sentry/vfs/mount.go:602 +0x4aa fp=0xc00072b2d8 sp=0xc00072b138 pc=0x184cb2a gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Umount2(0xc00002ca80, 0xc00072b598?, {{0x7f3719f658f0}, {0xa}, {0x0}, {0xffffffff}, {0x0}, {0x0}}) pkg/sentry/syscalls/linux/sys_mount.go:164 +0x3d1 fp=0xc00072b4d8 sp=0xc00072b2d8 pc=0x1e17cb1 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc00002ca80, 0xa6, {{0x7f3719f658f0}, {0xa}, {0x0}, {0xffffffff}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:142 +0x8b5 fp=0xc00072b8f8 sp=0xc00072b4d8 pc=0x1c09b15 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc00002ca80, 0x253b240?, {{0x7f3719f658f0}, {0xa}, {0x0}, {0xffffffff}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:322 +0x6c fp=0xc00072b998 sp=0xc00072b8f8 pc=0x1c0b94c gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc00072bb58?, 0x2125e59?, {{0x7f3719f658f0}, {0xa}, {0x0}, {0xffffffff}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:282 +0x87 fp=0xc00072ba10 sp=0xc00072b998 pc=0x1c0b307 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc00002ca80) pkg/sentry/kernel/task_syscall.go:257 +0x4f0 fp=0xc00072bb68 sp=0xc00072ba10 pc=0x1c0ae90 gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc00002ca80?, 0xc00002ca80) pkg/sentry/kernel/task_run.go:269 +0x1e08 fp=0xc00072be70 sp=0xc00072bb68 pc=0x1bf5708 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc00002ca80, 0x9) pkg/sentry/kernel/task_run.go:98 +0x43b fp=0xc00072bfb0 sp=0xc00072be70 pc=0x1bf301b gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1() pkg/sentry/kernel/task_start.go:391 +0x45 fp=0xc00072bfe0 sp=0xc00072bfb0 pc=0x1c078a5 runtime.goexit() src/runtime/asm_amd64.s:1650 +0x1 fp=0xc00072bfe8 sp=0xc00072bfe0 pc=0x12f5d81 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 261 pkg/sentry/kernel/task_start.go:391 +0x1ae