panic: WARNING: circular locking detected: mm.mappingRWMutex -> kernel.fsContextMutex: goroutine 11905 [running]: gvisor.dev/gvisor/pkg/sync/locking.(*ancestorsAtomicPtrMap).RangeRepeatable(0xc000213a00, 0xc00236c938) bazel-out/k8-fastbuild/bin/pkg/sync/locking/atomicptrmap_ancestors_unsafe.go:440 +0x1e8 gvisor.dev/gvisor/pkg/sync/locking.checkLock(0xc00034ce10, 0xc0002139e0, {0x0, 0x0, 0x0}) pkg/sync/locking/lockdep.go:112 +0x48a gvisor.dev/gvisor/pkg/sync/locking.AddGLock(0xc00034ce10, 0xffffffffffffffff) pkg/sync/locking/lockdep.go:144 +0x2ec gvisor.dev/gvisor/pkg/sentry/kernel.(*fsContextMutex).Lock(0xc00401da48) bazel-out/k8-fastbuild/bin/pkg/sentry/kernel/fs_context_mutex.go:33 +0x3c gvisor.dev/gvisor/pkg/sentry/kernel.(*FSContext).RootDirectory(0xc00401da40) pkg/sentry/kernel/fs_context.go:150 +0x4a gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).contextValue(0xc0015c0c88, {0x1c124a0, 0x20e1a50}, 0x1) pkg/sentry/kernel/task_context.go:99 +0x5d8 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Value(0xc0015c0c88, {0x1c124a0, 0x20e1a50}) 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(0xc000706080, {0x2113050, 0xc0015c0c88}) pkg/sentry/vfs/file_description.go:818 +0x77 gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).appendVMAMapsEntryLocked(0xc004d7f05c?, {0x2113050, 0xc0015c0c88}, {0xc0012f1b08?, 0xc00236cfa0?}, 0xc00236d058) pkg/sentry/mm/procfs.go:129 +0x2a2 gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).ReadMapsDataInto(0xc004d7f008, {0x2113050, 0xc0015c0c88}, 0xc00236d058) pkg/sentry/mm/procfs.go:85 +0x185 gvisor.dev/gvisor/pkg/sentry/fsimpl/proc.(*mapsData).Generate(0xc001b65188, {0x2113050, 0xc0015c0c88}, 0xc00081c020) pkg/sentry/fsimpl/proc/task_files.go:651 +0xa9 gvisor.dev/gvisor/pkg/sentry/vfs.(*DynamicBytesFileDescriptionImpl).preadLocked(0xc00081c000, {0x2113050, 0xc0015c0c88}, {{0x21087d8, 0xc004d7f008}, {0x0, 0x0, 0x0, 0x0}, {0x0, ...}}, ...) pkg/sentry/vfs/file_description_impl_util.go:310 +0x18b gvisor.dev/gvisor/pkg/sentry/vfs.(*DynamicBytesFileDescriptionImpl).PRead(0xc00081c000, {0x2113050, 0xc0015c0c88}, {{0x21087d8, 0xc004d7f008}, {0x0, 0x0, 0x0, 0x0}, {0x0, ...}}, ...) pkg/sentry/vfs/file_description_impl_util.go:329 +0xc5 gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*DynamicBytesFD).PRead(0xc00081c000, {0x2113050, 0xc0015c0c88}, {{0x21087d8, 0xc004d7f008}, {0x0, 0x0, 0x0, 0x0}, {0x0, ...}}, ...) pkg/sentry/fsimpl/kernfs/dynamic_bytes_file.go:133 +0xa6 gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).PRead(0xc00081c060, {0x2113050, 0xc0015c0c88}, {{0x21087d8, 0xc004d7f008}, {0x0, 0x0, 0x0, 0x0}, {0x0, ...}}, ...) pkg/sentry/vfs/file_description.go:638 +0x177 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.pread(0xc0015c0c88, 0xc00081c060, {{0x21087d8, 0xc004d7f008}, {0x0, 0x0, 0x0, 0x0}, {0x0, 0x1}}, ...) pkg/sentry/syscalls/linux/sys_read_write.go:250 +0xa5 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Preadv2(0xc0015c0c88, 0xc00157e160?, {{0x3}, {0x0}, {0x0}, {0xfffffffd}, {0x7dff}, {0x1e}}) pkg/sentry/syscalls/linux/sys_read_write.go:243 +0x2b4 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0015c0c88, 0x147, {{0x3}, {0x0}, {0x0}, {0xfffffffd}, {0x7dff}, {0x1e}}) pkg/sentry/kernel/task_syscall.go:143 +0x94c gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0015c0c88, 0x147, {{0x3}, {0x0}, {0x0}, {0xfffffffd}, {0x7dff}, {0x1e}}) pkg/sentry/kernel/task_syscall.go:323 +0x72 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0015c0c88, 0x147, {{0x3}, {0x0}, {0x0}, {0xfffffffd}, {0x7dff}, {0x1e}}) pkg/sentry/kernel/task_syscall.go:283 +0x94 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0015c0c88) pkg/sentry/kernel/task_syscall.go:258 +0x490 gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0015c0c88?, 0xc0015c0c88) pkg/sentry/kernel/task_run.go:269 +0x1ec9 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0015c0c88, 0xd9a) pkg/sentry/kernel/task_run.go:97 +0x4ca created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 11975 pkg/sentry/kernel/task_start.go:416 +0x15c known lock chain: kernel.fsContextMutex -> vfs.inotifyEventMutex -> mm.mappingRWMutex ====== kernel.fsContextMutex -> vfs.inotifyEventMutex ===== goroutine 8914 [running]: gvisor.dev/gvisor/pkg/sentry/vfs.(*inotifyEventMutex).Lock(0xc00039dad8) bazel-out/k8-fastbuild/bin/pkg/sentry/vfs/inotify_event_mutex.go:33 +0x3c gvisor.dev/gvisor/pkg/sentry/vfs.(*Inotify).queueEvent(0xc00039da40, 0xc003b7a300) pkg/sentry/vfs/inotify.go:276 +0x46 gvisor.dev/gvisor/pkg/sentry/vfs.(*Watch).Notify(0xc00193a8a0, {0x0, 0x0}, 0x400, 0x0) pkg/sentry/vfs/inotify.go:604 +0x287 gvisor.dev/gvisor/pkg/sentry/vfs.(*Watches).Notify(0xc0011b6fa0, {0x2113050, 0xc00163e008}, {0x0, 0x0}, 0x400, 0x0, 0x1, 0x1) pkg/sentry/vfs/inotify.go:476 +0x1b8 gvisor.dev/gvisor/pkg/sentry/vfs.(*Watches).HandleDeletion(0xc0011b6fa0, {0x2113050, 0xc00163e008}) pkg/sentry/vfs/inotify.go:510 +0x75 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(0xc0011b6c60, 0xc002b6fb30) 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(0xc0011b6c08, {0x2113050, 0xc00163e008}) 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({0xc0002100b0?, 0xc0011b6c08?}, {0x2113050, 0xc00163e008}) pkg/sentry/vfs/vfs.go:1114 +0x6b gvisor.dev/gvisor/pkg/sentry/kernel.(*FSContext).destroy(0xc00545f2c0, {0x2113050, 0xc00163e008}) 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(0xc00545f2c0, 0xc002b6fda0) 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(0xc00163e008?, 0xc00163e008) pkg/sentry/kernel/task_exit.go:301 +0x82b gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc00163e008, 0x9d7) pkg/sentry/kernel/task_run.go:97 +0x4ca created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 8890 pkg/sentry/kernel/task_start.go:416 +0x15c ====== vfs.inotifyEventMutex -> mm.mappingRWMutex ===== goroutine 8816 [running]: gvisor.dev/gvisor/pkg/sentry/mm.(*mappingRWMutex).RLock(0xc00126405c) bazel-out/k8-fastbuild/bin/pkg/sentry/mm/mapping_mutex.go:59 +0x3c gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).withInternalMappings(0xc001264008, {0x2113050, 0xc001024588}, {0xea0240a008?, 0xc0017a4ed8?}, {0xf4?, 0xb6?, 0x41?}, 0x0, 0xc0017a4ed0) pkg/sentry/mm/io.go:545 +0xf4 gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).CopyOut(0xc001264008, {0x2113050, 0xc001024588}, 0x200000000000, {0xc004a70220, 0x10, 0x10}, {0x53?, 0xae?}) pkg/sentry/mm/io.go:130 +0x26a gvisor.dev/gvisor/pkg/usermem.CopyOutVec({0x2113050, 0xc001024588}, {0x21087d8, 0xc001264008}, {0x0?, 0x2dcbdc0?, 0x2270?, 0xc000212a00?}, {0xc004a70220, 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(0xc00545e180, {0x2113050, 0xc001024588}, {0xc004a70220, 0x10, 0x10}, {{0x21087d8, 0xc001264008}, {0x0, 0x1, ...}, ...}) pkg/sentry/vfs/inotify.go:693 +0x590 gvisor.dev/gvisor/pkg/sentry/vfs.(*Inotify).Read(0xc00039da40, {0x2113050, 0xc001024588}, {{0x21087d8, 0xc001264008}, {0x0, 0x1, 0x200000000000, 0x35}, {0x0, ...}}, ...) pkg/sentry/vfs/inotify.go:244 +0x53c gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).Read(0xc00039da40, {0x2113050, 0xc001024588}, {{0x21087d8, 0xc001264008}, {0x0, 0x1, 0x200000000000, 0x35}, {0x0, ...}}, ...) pkg/sentry/vfs/file_description.go:653 +0x14f gvisor.dev/gvisor/pkg/sentry/syscalls/linux.read(0xc001024588, 0xc00039da40, {{0x21087d8, 0xc001264008}, {0x0, 0x1, 0x200000000000, 0x35}, {0x0, 0x1}}, ...) pkg/sentry/syscalls/linux/sys_read_write.go:116 +0x59e gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Read(0xc001024588, 0xc0006c8f30?, {{0x3}, {0x200000000000}, {0x35}, {0x0}, {0x0}, {0x0}}) pkg/sentry/syscalls/linux/sys_read_write.go:62 +0x2b2 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc001024588, 0x0, {{0x3}, {0x200000000000}, {0x35}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:143 +0x94c gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc001024588, 0x0, {{0x3}, {0x200000000000}, {0x35}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:323 +0x72 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc001024588, 0x0, {{0x3}, {0x200000000000}, {0x35}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:283 +0x94 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc001024588) pkg/sentry/kernel/task_syscall.go:258 +0x490 gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc001024588?, 0xc001024588) pkg/sentry/kernel/task_run.go:269 +0x1ec9 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc001024588, 0x9d2) pkg/sentry/kernel/task_run.go:97 +0x4ca created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 8875 pkg/sentry/kernel/task_start.go:416 +0x15c