panic: WARNING: circular locking detected: kernel.fsContextMutex -> kernfs.filesystemRWMutex:
goroutine 736 [running]:
gvisor.dev/gvisor/pkg/sync/locking.(*ancestorsAtomicPtrMap).RangeRepeatable(0xc0001ed7c0, 0xc000d57138)
bazel-out/k8-fastbuild/bin/pkg/sync/locking/atomicptrmap_ancestors_unsafe.go:440 +0x314
gvisor.dev/gvisor/pkg/sync/locking.checkLock(0xc000334cf0, 0xc0001ed7a0, {0x0, 0x0, 0x0})
pkg/sync/locking/lockdep.go:112 +0x4eb
gvisor.dev/gvisor/pkg/sync/locking.AddGLock(0xc000334cf0, 0xffffffffffffffff)
pkg/sync/locking/lockdep.go:144 +0x37b
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*filesystemRWMutex).Lock(0xc0006c5550)
bazel-out/k8-fastbuild/bin/pkg/sentry/fsimpl/kernfs/filesystem_mutex.go:31 +0x4d
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Dentry).DecRef(0xc000b97170, {0x21bc6b0, 0xc0019eb908})
pkg/sentry/fsimpl/kernfs/kernfs.go:303 +0x116
gvisor.dev/gvisor/pkg/sentry/vfs.(*Dentry).DecRef(0xc000b97170, {0x21bc6b0, 0xc0019eb908})
pkg/sentry/vfs/dentry.go:156 +0x68
gvisor.dev/gvisor/pkg/sentry/vfs.VirtualDentry.DecRef({0xc0002a11e0?, 0xc000b97170?}, {0x21bc6b0, 0xc0019eb908})
pkg/sentry/vfs/vfs.go:1114 +0x5b
gvisor.dev/gvisor/pkg/sentry/kernel.(*FSContext).SetWorkingDirectory(0xc00077a740, {0x21bc6b0, 0xc0019eb908}, {0xc0002a11e0, 0xc000d83d40})
pkg/sentry/kernel/fs_context.go:144 +0x23b
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Fchdir(0xc0019eb908, 0x457b27?, {{0x3}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}})
pkg/sentry/syscalls/linux/sys_file.go:361 +0x3b8
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0019eb908, 0x51, {{0x3}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}})
pkg/sentry/kernel/task_syscall.go:143 +0xb90
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0019eb908, 0x51, {{0x3}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}})
pkg/sentry/kernel/task_syscall.go:323 +0x85
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0019eb908, 0x51, {{0x3}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}})
pkg/sentry/kernel/task_syscall.go:283 +0xc7
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0019eb908)
pkg/sentry/kernel/task_syscall.go:258 +0x53e
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0019eb908?, 0xc0019eb908)
pkg/sentry/kernel/task_run.go:269 +0x220c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0019eb908, 0x4e)
pkg/sentry/kernel/task_run.go:97 +0x402
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 703
pkg/sentry/kernel/task_start.go:416 +0x17e
known lock chain: kernfs.filesystemRWMutex -> kernel.taskMutex -> kernel.fsContextMutex
====== kernfs.filesystemRWMutex -> kernel.taskMutex =====
goroutine 233 [running]:
gvisor.dev/gvisor/pkg/sentry/kernel.(*taskMutex).Lock(0xc0008fa9a0)
bazel-out/k8-fastbuild/bin/pkg/sentry/kernel/task_mutex.go:35 +0x4d
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).GetNetworkNamespace(0xc0008fa008)
pkg/sentry/kernel/task_net.go:48 +0x4d
gvisor.dev/gvisor/pkg/sentry/fsimpl/proc.(*filesystem).newTaskNetDir(0xc0001e26c0, {0x21bc6b0, 0xc0008fa008}, 0xc0008fa008)
pkg/sentry/fsimpl/proc/task_net.go:47 +0x132
gvisor.dev/gvisor/pkg/sentry/fsimpl/proc.(*filesystem).newTaskInode(0xc0001e26c0, {0x21bc6b0, 0xc0008fa008}, 0xc0008fa008, 0xc0001c4a80, 0x1, 0x0)
pkg/sentry/fsimpl/proc/task.go:77 +0x12d3
gvisor.dev/gvisor/pkg/sentry/fsimpl/proc.(*tasksInode).Lookup(0xc0003c1008, {0x21bc6b0, 0xc0008fa008}, {0x1fa44d4, 0x1})
pkg/sentry/fsimpl/proc/tasks.go:147 +0x3c6
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).revalidateChildLocked(0xc0001e26c0, {0x21bc6b0, 0xc0008fa008}, 0xc0000049e0, 0xc0009b6b40, {0x1fa44d4, 0x1})
pkg/sentry/fsimpl/kernfs/filesystem.go:127 +0x3eb
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).stepExistingLocked(0xc0001e26c0, {0x21bc6b0, 0xc0008fa008}, 0xc0004c6488, 0xc0009b6b40)
pkg/sentry/fsimpl/kernfs/filesystem.go:74 +0x459
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).walkExistingLocked(0xc0001e26c0, {0x21bc6b0, 0xc0008fa008}, 0xc0004c6488)
pkg/sentry/fsimpl/kernfs/filesystem.go:197 +0x106
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).ReadlinkAt(0xc0001e26c0, {0x21bc6b0, 0xc0008fa008}, 0xc0004c6488)
pkg/sentry/fsimpl/kernfs/filesystem.go:697 +0x14a
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).ReadlinkAt(0xc0000049e0, {0x21bc6b0, 0xc0008fa008}, 0xc0002102a0, 0xc000047598)
pkg/sentry/vfs/vfs.go:512 +0x109
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.readlinkat(0xc0008fa008, 0xffffff9c, 0xc0000c0070, 0xc0000b6d80, 0x80)
pkg/sentry/syscalls/linux/sys_file.go:1096 +0x305
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Readlinkat(0xc0008fa008, 0x457b27?, {{0xffffffffffffff9c}, {0xc0000c0070}, {0xc0000b6d80}, {0x80}, {0x0}, {0x0}})
pkg/sentry/syscalls/linux/sys_file.go:1067 +0xc6
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0008fa008, 0x10b, {{0xffffffffffffff9c}, {0xc0000c0070}, {0xc0000b6d80}, {0x80}, {0x0}, {0x0}})
pkg/sentry/kernel/task_syscall.go:143 +0xb90
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0008fa008, 0x10b, {{0xffffffffffffff9c}, {0xc0000c0070}, {0xc0000b6d80}, {0x80}, {0x0}, {0x0}})
pkg/sentry/kernel/task_syscall.go:323 +0x85
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0008fa008, 0x10b, {{0xffffffffffffff9c}, {0xc0000c0070}, {0xc0000b6d80}, {0x80}, {0x0}, {0x0}})
pkg/sentry/kernel/task_syscall.go:283 +0xc7
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0008fa008)
pkg/sentry/kernel/task_syscall.go:258 +0x53e
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0008fa008?, 0xc0008fa008)
pkg/sentry/kernel/task_run.go:269 +0x220c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0008fa008, 0x1)
pkg/sentry/kernel/task_run.go:97 +0x402
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 1
pkg/sentry/kernel/task_start.go:416 +0x17e
====== kernel.taskMutex -> kernel.fsContextMutex =====
goroutine 340 [running]:
gvisor.dev/gvisor/pkg/sentry/kernel.(*fsContextMutex).Lock(0xc0009bf508)
bazel-out/k8-fastbuild/bin/pkg/sentry/kernel/fs_context_mutex.go:33 +0x4d
gvisor.dev/gvisor/pkg/sentry/kernel.(*FSContext).Fork(0xc0009bf500)
pkg/sentry/kernel/fs_context.go:97 +0x65
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Unshare(0xc0009fe588, 0x20000)
pkg/sentry/kernel/task_clone.go:706 +0x1207
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Unshare(0xc0009fe588, 0x457b27?, {{0x20000}, {0x7}, {0x7fa5380eeaf0}, {0x0}, {0x0}, {0x55e12b96f6c0}})
pkg/sentry/syscalls/linux/sys_thread.go:453 +0xd5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0009fe588, 0x110, {{0x20000}, {0x7}, {0x7fa5380eeaf0}, {0x0}, {0x0}, {0x55e12b96f6c0}})
pkg/sentry/kernel/task_syscall.go:143 +0xb90
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0009fe588, 0x110, {{0x20000}, {0x7}, {0x7fa5380eeaf0}, {0x0}, {0x0}, {0x55e12b96f6c0}})
pkg/sentry/kernel/task_syscall.go:323 +0x85
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0009fe588, 0x110, {{0x20000}, {0x7}, {0x7fa5380eeaf0}, {0x0}, {0x0}, {0x55e12b96f6c0}})
pkg/sentry/kernel/task_syscall.go:283 +0xc7
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0009fe588)
pkg/sentry/kernel/task_syscall.go:258 +0x53e
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0009fe588?, 0xc0009fe588)
pkg/sentry/kernel/task_run.go:269 +0x220c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0009fe588, 0x19)
pkg/sentry/kernel/task_run.go:97 +0x402
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 257
pkg/sentry/kernel/task_start.go:416 +0x17e