panic: WARNING: circular locking detected: kernel.fsContextMutex -> vfs.inotifyEventMutex: goroutine 222281 [running]: gvisor.dev/gvisor/pkg/sync/locking.(*ancestorsAtomicPtrMap).RangeRepeatable(0xc0003c4e30, 0xc000b036a8) bazel-out/k8-fastbuild/bin/pkg/sync/locking/atomicptrmap_ancestors_unsafe.go:440 +0x1e8 gvisor.dev/gvisor/pkg/sync/locking.checkLock(0xc00030aa20, 0xc0003c4e10, {0x0, 0x0, 0x0}) pkg/sync/locking/lockdep.go:112 +0x48a gvisor.dev/gvisor/pkg/sync/locking.AddGLock(0xc00030aa20, 0xffffffffffffffff) pkg/sync/locking/lockdep.go:144 +0x2ec gvisor.dev/gvisor/pkg/sentry/vfs.(*inotifyEventMutex).Lock(0xc00355f9f8) bazel-out/k8-fastbuild/bin/pkg/sentry/vfs/inotify_event_mutex.go:33 +0x3c gvisor.dev/gvisor/pkg/sentry/vfs.(*Inotify).queueEvent(0xc00355f960, 0xc0027a77c0) pkg/sentry/vfs/inotify.go:276 +0x46 gvisor.dev/gvisor/pkg/sentry/vfs.(*Watches).HandleDeletion(0xc005e12fa0, {0x2112f90, 0xc00186b908}) pkg/sentry/vfs/inotify.go:537 +0x346 gvisor.dev/gvisor/pkg/sentry/fsimpl/tmpfs.(*dentry).DecRef.(*inode).decRef.func1() pkg/sentry/fsimpl/tmpfs/tmpfs.go:605 +0x53 gvisor.dev/gvisor/pkg/sentry/fsimpl/tmpfs.(*inodeRefs).DecRef(0xc005e12c60, 0xc000b03b30) bazel-out/k8-fastbuild/bin/pkg/sentry/fsimpl/tmpfs/inode_refs.go:133 +0x6d gvisor.dev/gvisor/pkg/sentry/fsimpl/tmpfs.(*inode).decRef(...) pkg/sentry/fsimpl/tmpfs/tmpfs.go:604 gvisor.dev/gvisor/pkg/sentry/fsimpl/tmpfs.(*dentry).DecRef(0xc005e12c08, {0x2112f90, 0xc00186b908}) pkg/sentry/fsimpl/tmpfs/tmpfs.go:464 +0xb2 gvisor.dev/gvisor/pkg/sentry/vfs.(*Dentry).DecRef(...) pkg/sentry/vfs/dentry.go:156 gvisor.dev/gvisor/pkg/sentry/vfs.VirtualDentry.DecRef({0xc000b934a0?, 0xc005e12c08?}, {0x2112f90, 0xc00186b908}) pkg/sentry/vfs/vfs.go:1114 +0x6b gvisor.dev/gvisor/pkg/sentry/kernel.(*FSContext).destroy(0xc0032326c0, {0x2112f90, 0xc00186b908}) pkg/sentry/kernel/fs_context.go:73 +0x153 gvisor.dev/gvisor/pkg/sentry/kernel.(*runExitMain).execute.(*FSContext).DecRef.func2() pkg/sentry/kernel/fs_context.go:87 +0x47 gvisor.dev/gvisor/pkg/sentry/kernel.(*FSContextRefs).DecRef(0xc0032326c0, 0xc000b03da0) bazel-out/k8-fastbuild/bin/pkg/sentry/kernel/fs_context_refs.go:133 +0x6d gvisor.dev/gvisor/pkg/sentry/kernel.(*FSContext).DecRef(...) pkg/sentry/kernel/fs_context.go:86 gvisor.dev/gvisor/pkg/sentry/kernel.(*runExitMain).execute(0xc00186b908?, 0xc00186b908) pkg/sentry/kernel/task_exit.go:301 +0x82b gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc00186b908, 0x2004) pkg/sentry/kernel/task_run.go:97 +0x4ca created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 222253 pkg/sentry/kernel/task_start.go:416 +0x15c known lock chain: vfs.inotifyEventMutex -> mm.mappingRWMutex -> kernel.fsContextMutex ====== vfs.inotifyEventMutex -> mm.mappingRWMutex ===== goroutine 222278 [running]: gvisor.dev/gvisor/pkg/sentry/mm.(*mappingRWMutex).RLock(0xc002ece05c) bazel-out/k8-fastbuild/bin/pkg/sentry/mm/mapping_mutex.go:59 +0x3c gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).withInternalMappings(0xc002ece008, {0x2112f90, 0xc0028a3908}, {0xc00019098f?, 0xc000190980?}, {0x8f?, 0x9?, 0x19?}, 0x0, 0xc0004baed0) pkg/sentry/mm/io.go:545 +0xf4 gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).CopyOut(0xc002ece008, {0x2112f90, 0xc0028a3908}, 0x200000000000, {0xc0034e3b60, 0x10, 0x10}, {0x53?, 0xae?}) pkg/sentry/mm/io.go:130 +0x26a gvisor.dev/gvisor/pkg/usermem.CopyOutVec({0x2112f90, 0xc0028a3908}, {0x2108718, 0xc002ece008}, {0xc000190980?, 0x2dcbdc0?, 0x36446?, 0xc00030aa00?}, {0xc0034e3b60, 0x10, ...}, ...) pkg/usermem/usermem.go:264 +0x1db gvisor.dev/gvisor/pkg/usermem.IOSequence.CopyOut(...) pkg/usermem/usermem.go:482 gvisor.dev/gvisor/pkg/sentry/vfs.(*Event).CopyTo(0xc002939900, {0x2112f90, 0xc0028a3908}, {0xc0034e3b60, 0x10, 0x10}, {{0x2108718, 0xc002ece008}, {0xc000190980, 0x2, ...}, ...}) pkg/sentry/vfs/inotify.go:693 +0x590 gvisor.dev/gvisor/pkg/sentry/vfs.(*Inotify).Read(0xc00355f960, {0x2112f90, 0xc0028a3908}, {{0x2108718, 0xc002ece008}, {0xc000190980, 0x2, 0x0, 0xcb}, {0x0, ...}}, ...) pkg/sentry/vfs/inotify.go:244 +0x53c gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).Read(0xc00355f960, {0x2112f90, 0xc0028a3908}, {{0x2108718, 0xc002ece008}, {0xc000190980, 0x2, 0x0, 0xcb}, {0x0, ...}}, ...) pkg/sentry/vfs/file_description.go:653 +0x14f gvisor.dev/gvisor/pkg/sentry/syscalls/linux.read(0xc0028a3908, 0xc00355f960, {{0x2108718, 0xc002ece008}, {0xc000190980, 0x2, 0x0, 0xcb}, {0x0, 0x1}}, ...) pkg/sentry/syscalls/linux/sys_read_write.go:116 +0x59e gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Readv(0xc0028a3908, 0xca?, {{0xa}, {0x200000000600}, {0x2}, {0x0}, {0x0}, {0x0}}) pkg/sentry/syscalls/linux/sys_read_write.go:87 +0x29c gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0028a3908, 0x13, {{0xa}, {0x200000000600}, {0x2}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:143 +0x94c gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0028a3908, 0x13, {{0xa}, {0x200000000600}, {0x2}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:323 +0x72 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0028a3908, 0x13, {{0xa}, {0x200000000600}, {0x2}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:283 +0x94 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0028a3908) pkg/sentry/kernel/task_syscall.go:258 +0x490 gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0028a3908?, 0xc0028a3908) pkg/sentry/kernel/task_run.go:269 +0x1ec9 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0028a3908, 0x1ffe) pkg/sentry/kernel/task_run.go:97 +0x4ca created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 222276 pkg/sentry/kernel/task_start.go:416 +0x15c ====== mm.mappingRWMutex -> kernel.fsContextMutex ===== goroutine 25433 [running]: gvisor.dev/gvisor/pkg/sentry/kernel.(*fsContextMutex).Lock(0xc0027ea948) bazel-out/k8-fastbuild/bin/pkg/sentry/kernel/fs_context_mutex.go:33 +0x3c gvisor.dev/gvisor/pkg/sentry/kernel.(*FSContext).RootDirectory(0xc0027ea940) pkg/sentry/kernel/fs_context.go:150 +0x4a gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).contextValue(0xc004408588, {0x1c123e0, 0x20e1978}, 0x1) pkg/sentry/kernel/task_context.go:99 +0x5d8 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Value(0xc004408588, {0x1c123e0, 0x20e1978}) pkg/sentry/kernel/task_context.go:61 +0x4a gvisor.dev/gvisor/pkg/sentry/vfs.RootFromContext(...) pkg/sentry/vfs/context.go:88 gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).MappedName(0xc0006b2600, {0x2112f90, 0xc004408588}) pkg/sentry/vfs/file_description.go:818 +0x77 gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).appendVMAMapsEntryLocked(0xc000d52020?, {0x2112f90, 0xc004408588}, {0xc005333b08?, 0xc000da4f38?}, 0xc000da4f28) pkg/sentry/mm/procfs.go:129 +0x2a2 gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).vmaSmapsEntryIntoLocked(0xc00209d008, {0x2112f90, 0xc004408588}, {0xc005333b08?, 0xc004408f20?}, 0xc000d52020) pkg/sentry/mm/procfs.go:160 +0xd6 gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).ReadSmapsDataInto(0xc00209d008, {0x2112f90, 0xc004408588}, 0xc000d52020) pkg/sentry/mm/procfs.go:141 +0x16f gvisor.dev/gvisor/pkg/sentry/fsimpl/proc.(*smapsData).Generate(0xc0013d6008, {0x2112f90, 0xc004408588}, 0xc000d52020) pkg/sentry/fsimpl/proc/task_files.go:670 +0x68 gvisor.dev/gvisor/pkg/sentry/vfs.(*DynamicBytesFileDescriptionImpl).preadLocked(0xc000d52000, {0x2112f90, 0xc004408588}, {{0x2108718, 0xc00209d008}, {0x0, 0x1, 0x200000000480, 0x2020}, {0x0, ...}}, ...) pkg/sentry/vfs/file_description_impl_util.go:310 +0x18b gvisor.dev/gvisor/pkg/sentry/vfs.(*DynamicBytesFileDescriptionImpl).Read(0xc000d52000, {0x2112f90, 0xc004408588}, {{0x2108718, 0xc00209d008}, {0x0, 0x1, 0x200000000480, 0x2020}, {0x0, ...}}, ...) pkg/sentry/vfs/file_description_impl_util.go:337 +0x117 gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*DynamicBytesFD).Read(0xc000d52000, {0x2112f90, 0xc004408588}, {{0x2108718, 0xc00209d008}, {0x0, 0x1, 0x200000000480, 0x2020}, {0x0, ...}}, ...) pkg/sentry/fsimpl/kernfs/dynamic_bytes_file.go:128 +0x91 gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).Read(0xc000d52060, {0x2112f90, 0xc004408588}, {{0x2108718, 0xc00209d008}, {0x0, 0x1, 0x200000000480, 0x2020}, {0x0, ...}}, ...) pkg/sentry/vfs/file_description.go:653 +0x14f gvisor.dev/gvisor/pkg/sentry/syscalls/linux.read(0xc004408588, 0xc000d52060, {{0x2108718, 0xc00209d008}, {0x0, 0x1, 0x200000000480, 0x2020}, {0x0, 0x1}}, ...) pkg/sentry/syscalls/linux/sys_read_write.go:93 +0x91 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Read(0xc004408588, 0x4b8c1e?, {{0x3}, {0x200000000480}, {0x2020}, {0x0}, {0x0}, {0x0}}) pkg/sentry/syscalls/linux/sys_read_write.go:62 +0x2b2 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc004408588, 0x0, {{0x3}, {0x200000000480}, {0x2020}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:143 +0x94c gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc004408588, 0x0, {{0x3}, {0x200000000480}, {0x2020}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:323 +0x72 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc004408588, 0x0, {{0x3}, {0x200000000480}, {0x2020}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:283 +0x94 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc004408588) pkg/sentry/kernel/task_syscall.go:258 +0x490 gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc004408588?, 0xc004408588) pkg/sentry/kernel/task_run.go:269 +0x1ec9 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc004408588, 0x2067) pkg/sentry/kernel/task_run.go:97 +0x4ca created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 25432 pkg/sentry/kernel/task_start.go:416 +0x15c