panic: WARNING: circular locking detected: kernel.fsContextMutex -> vfs.inotifyEventMutex: goroutine 17751 [running]: gvisor.dev/gvisor/pkg/sync/locking.(*ancestorsAtomicPtrMap).RangeRepeatable(0xc000334f50, 0xc001bb56e8) bazel-out/k8-fastbuild/bin/pkg/sync/locking/atomicptrmap_ancestors_unsafe.go:440 +0x314 gvisor.dev/gvisor/pkg/sync/locking.checkLock(0xc0003943f0, 0xc000334f30, {0x0, 0x0, 0x0}) pkg/sync/locking/lockdep.go:112 +0x4eb gvisor.dev/gvisor/pkg/sync/locking.AddGLock(0xc0003943f0, 0xffffffffffffffff) pkg/sync/locking/lockdep.go:144 +0x37b gvisor.dev/gvisor/pkg/sentry/vfs.(*inotifyEventMutex).Lock(0xc001b48098) bazel-out/k8-fastbuild/bin/pkg/sentry/vfs/inotify_event_mutex.go:33 +0x4d gvisor.dev/gvisor/pkg/sentry/vfs.(*Inotify).queueEvent(0xc001b48000, 0xc001c2e900) pkg/sentry/vfs/inotify.go:276 +0x4e gvisor.dev/gvisor/pkg/sentry/vfs.(*Watches).HandleDeletion(0xc00123afa0, {0x21b8bb0, 0xc001ca5208}) pkg/sentry/vfs/inotify.go:537 +0x2fc gvisor.dev/gvisor/pkg/sentry/fsimpl/tmpfs.(*inode).decRef.func1() pkg/sentry/fsimpl/tmpfs/tmpfs.go:605 +0x65 gvisor.dev/gvisor/pkg/sentry/fsimpl/tmpfs.(*inodeRefs).DecRef(0xc00123ac60, 0xc001bb5b10) bazel-out/k8-fastbuild/bin/pkg/sentry/fsimpl/tmpfs/inode_refs.go:133 +0xb4 gvisor.dev/gvisor/pkg/sentry/fsimpl/tmpfs.(*inode).decRef(0xc00123ac58, {0x21b8bb0, 0xc001ca5208}) pkg/sentry/fsimpl/tmpfs/tmpfs.go:604 +0xa5 gvisor.dev/gvisor/pkg/sentry/fsimpl/tmpfs.(*dentry).DecRef(0xc00123ac08, {0x21b8bb0, 0xc001ca5208}) pkg/sentry/fsimpl/tmpfs/tmpfs.go:464 +0x65 gvisor.dev/gvisor/pkg/sentry/vfs.(*Dentry).DecRef(0xc00123ac08, {0x21b8bb0, 0xc001ca5208}) pkg/sentry/vfs/dentry.go:156 +0x68 gvisor.dev/gvisor/pkg/sentry/vfs.VirtualDentry.DecRef({0xc0002aa790?, 0xc00123ac08?}, {0x21b8bb0, 0xc001ca5208}) pkg/sentry/vfs/vfs.go:1114 +0x5b gvisor.dev/gvisor/pkg/sentry/kernel.(*FSContext).destroy(0xc00181b9c0, {0x21b8bb0, 0xc001ca5208}) pkg/sentry/kernel/fs_context.go:73 +0x16d gvisor.dev/gvisor/pkg/sentry/kernel.(*FSContext).DecRef.func1() pkg/sentry/kernel/fs_context.go:87 +0x59 gvisor.dev/gvisor/pkg/sentry/kernel.(*FSContextRefs).DecRef(0xc00181b9c0, 0xc001bb5d10) bazel-out/k8-fastbuild/bin/pkg/sentry/kernel/fs_context_refs.go:133 +0xb4 gvisor.dev/gvisor/pkg/sentry/kernel.(*FSContext).DecRef(0xc00181b9c0, {0x21b8bb0, 0xc001ca5208}) pkg/sentry/kernel/fs_context.go:86 +0xa5 gvisor.dev/gvisor/pkg/sentry/kernel.(*runExitMain).execute(0xc001ca5208?, 0xc001ca5208) pkg/sentry/kernel/task_exit.go:301 +0x7d3 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc001ca5208, 0x114d) pkg/sentry/kernel/task_run.go:97 +0x402 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 17780 pkg/sentry/kernel/task_start.go:416 +0x17e known lock chain: vfs.inotifyEventMutex -> mm.mappingRWMutex -> kernel.fsContextMutex ====== vfs.inotifyEventMutex -> mm.mappingRWMutex ===== goroutine 17780 [running]: gvisor.dev/gvisor/pkg/sentry/mm.(*mappingRWMutex).RLock(0xc000a4105c) bazel-out/k8-fastbuild/bin/pkg/sentry/mm/mapping_mutex.go:59 +0x4d gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).withInternalMappings(0xc000a41008, {0x21b8bb0, 0xc001406c88}, {0xc000b68140?, 0x0?}, {0x6c?, 0x86?, 0x48?}, 0x0, 0xc001bb8f38) pkg/sentry/mm/io.go:545 +0x145 gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).CopyOut(0xc000a41008, {0x21b8bb0, 0xc001406c88}, 0x200000001fc0, {0xc00144aa30, 0x10, 0x10}, {0x1?, 0x0?}) pkg/sentry/mm/io.go:130 +0x2e7 gvisor.dev/gvisor/pkg/usermem.CopyOutVec({0x21b8bb0, 0xc001406c88}, {0x21ae538, 0xc000a41008}, {0x0?, 0xa00a15?, 0x48866c?, 0x48a355?}, {0xc00144aa30, 0x10, ...}, ...) pkg/usermem/usermem.go:264 +0x26b gvisor.dev/gvisor/pkg/usermem.IOSequence.CopyOut({{0x21ae538, 0xc000a41008}, {0x0, 0x1, 0x200000001fc0, 0x30}, {0x0, 0x1}}, {0x21b8bb0, 0xc001406c88}, ...) pkg/usermem/usermem.go:482 +0xe8 gvisor.dev/gvisor/pkg/sentry/vfs.(*Event).CopyTo(0xc001d08e40, {0x21b8bb0, 0xc001406c88}, {0xc00144aa30, 0x10, 0x10}, {{0x21ae538, 0xc000a41008}, {0x0, 0x1, ...}, ...}) pkg/sentry/vfs/inotify.go:693 +0x5a5 gvisor.dev/gvisor/pkg/sentry/vfs.(*Inotify).Read(0xc001b48000, {0x21b8bb0, 0xc001406c88}, {{0x21ae538, 0xc000a41008}, {0x0, 0x1, 0x200000001fc0, 0x30}, {0x0, ...}}, ...) pkg/sentry/vfs/inotify.go:244 +0x632 gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).Read(0xc001b48000, {0x21b8bb0, 0xc001406c88}, {{0x21ae538, 0xc000a41008}, {0x0, 0x1, 0x200000001fc0, 0x30}, {0x0, ...}}, ...) pkg/sentry/vfs/file_description.go:653 +0x154 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.read(0xc001406c88, 0xc001b48000, {{0x21ae538, 0xc000a41008}, {0x0, 0x1, 0x200000001fc0, 0x30}, {0x0, 0x1}}, ...) pkg/sentry/syscalls/linux/sys_read_write.go:93 +0xa5 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Read(0xc001406c88, 0x457b27?, {{0x3}, {0x200000001fc0}, {0x30}, {0x0}, {0x0}, {0x0}}) pkg/sentry/syscalls/linux/sys_read_write.go:62 +0x38f gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc001406c88, 0x0, {{0x3}, {0x200000001fc0}, {0x30}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:143 +0xb90 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc001406c88, 0x0, {{0x3}, {0x200000001fc0}, {0x30}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:323 +0x85 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc001406c88, 0x0, {{0x3}, {0x200000001fc0}, {0x30}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:283 +0xc7 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc001406c88) pkg/sentry/kernel/task_syscall.go:258 +0x53e gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc001406c88?, 0xc001406c88) pkg/sentry/kernel/task_run.go:269 +0x220c gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc001406c88, 0x114b) pkg/sentry/kernel/task_run.go:97 +0x402 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 17797 pkg/sentry/kernel/task_start.go:416 +0x17e ====== mm.mappingRWMutex -> kernel.fsContextMutex ===== goroutine 7809 [running]: gvisor.dev/gvisor/pkg/sentry/kernel.(*fsContextMutex).Lock(0xc001b32108) bazel-out/k8-fastbuild/bin/pkg/sentry/kernel/fs_context_mutex.go:33 +0x4d gvisor.dev/gvisor/pkg/sentry/kernel.(*FSContext).RootDirectory(0xc001b32100) pkg/sentry/kernel/fs_context.go:150 +0x65 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).contextValue(0xc0015d7908, {0x1cdae00, 0x2187720}, 0x0) pkg/sentry/kernel/task_context.go:99 +0x12ba gvisor.dev/gvisor/pkg/sentry/kernel.(*taskAsyncContext).Value(0xc00199c170, {0x1cdae00, 0x2187720}) pkg/sentry/kernel/task_context.go:159 +0x65 gvisor.dev/gvisor/pkg/sentry/vfs.RootFromContext({0x7f0848229dd8, 0xc00199c170}) pkg/sentry/vfs/context.go:88 +0x58 gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).MappedName(0xc0002b6900, {0x21b8c48, 0xc00199c170}) pkg/sentry/vfs/file_description.go:818 +0x78 gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).appendVMAMapsEntryLocked(0xc001168988?, {0x21b8c48, 0xc00199c170}, {0xc0009ccd08?, 0xc0009a54e0?}, 0xc0009c8520) pkg/sentry/mm/procfs.go:129 +0x32c gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).vmaSmapsEntryIntoLocked(0xc00184a008, {0x21b8c48, 0xc00199c170}, {0xc0009ccd08?, 0x48866c?}, 0xc0004c4020) pkg/sentry/mm/procfs.go:160 +0xb5 gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).ReadSmapsDataInto(0xc00184a008, {0x21b8c48, 0xc00199c170}, 0xc0004c4020) pkg/sentry/mm/procfs.go:141 +0x12e gvisor.dev/gvisor/pkg/sentry/fsimpl/proc.(*smapsData).Generate(0xc000d00708, {0x21b8c48, 0xc00199c170}, 0xc0004c4020) pkg/sentry/fsimpl/proc/task_files.go:670 +0x9e gvisor.dev/gvisor/pkg/sentry/vfs.(*DynamicBytesFileDescriptionImpl).preadLocked(0xc0004c4000, {0x21b8c48, 0xc00199c170}, {{0x21ae538, 0xc00184a008}, {0x0, 0x0, 0x0, 0x0}, {0x0, ...}}, ...) pkg/sentry/vfs/file_description_impl_util.go:310 +0x1d9 gvisor.dev/gvisor/pkg/sentry/vfs.(*DynamicBytesFileDescriptionImpl).PRead(0xc0004c4000, {0x21b8c48, 0xc00199c170}, {{0x21ae538, 0xc00184a008}, {0x0, 0x0, 0x0, 0x0}, {0x0, ...}}, ...) pkg/sentry/vfs/file_description_impl_util.go:329 +0xd5 gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*DynamicBytesFD).PRead(0xc0004c4000, {0x21b8c48, 0xc00199c170}, {{0x21ae538, 0xc00184a008}, {0x0, 0x0, 0x0, 0x0}, {0x0, ...}}, ...) pkg/sentry/fsimpl/kernfs/dynamic_bytes_file.go:133 +0xb7 gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).PRead(0xc0004c4060, {0x21b8c48, 0xc00199c170}, {{0x21ae538, 0xc00184a008}, {0x0, 0x0, 0x0, 0x0}, {0x0, ...}}, ...) pkg/sentry/vfs/file_description.go:638 +0x19b gvisor.dev/gvisor/pkg/sentry/syscalls/linux.getAIOCallback.func1({0x21b8c48, 0xc00199c170}) pkg/sentry/syscalls/linux/sys_aio.go:361 +0x3f4 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).QueueAIO.func1() pkg/sentry/kernel/aio.go:30 +0x62 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).QueueAIO in goroutine 7864 pkg/sentry/kernel/aio.go:29 +0x225