panic: WARNING: circular locking detected: tmpfs.filesystemRWMutex -> kernel.taskSetRWMutex: goroutine 928975 [running]: gvisor.dev/gvisor/pkg/log.Stacks(0x60) pkg/log/log.go:316 +0x8d gvisor.dev/gvisor/pkg/sync/locking.checkLock(0xc00002cd80, 0xc000235780, {0xc006f3d100, 0x1, 0x1}) pkg/sync/locking/lockdep.go:56 +0x1f4 gvisor.dev/gvisor/pkg/sync/locking.checkLock.func1(0xc000235d20, 0xc009f78940) pkg/sync/locking/lockdep.go:76 +0x65 gvisor.dev/gvisor/pkg/sync/locking.(*ancestorsAtomicPtrMap).RangeRepeatable(0xc000235d00, 0xc009f78a58) bazel-out/k8-fastbuild-ST-a4501ad48192/bin/pkg/sync/locking/atomicptrmap_ancestors_unsafe.go:441 +0x226 gvisor.dev/gvisor/pkg/sync/locking.checkLock(0xc00002cd80, 0xc000235d00, {0x0, 0x0, 0x0}) pkg/sync/locking/lockdep.go:73 +0x46c gvisor.dev/gvisor/pkg/sync/locking.AddGLock(0xc00002cd80, 0x0) pkg/sync/locking/lockdep.go:107 +0x3ba gvisor.dev/gvisor/pkg/sentry/kernel.(*taskSetRWMutex).RLock(0xc0002322a0) bazel-out/k8-fastbuild-ST-a4501ad48192/bin/pkg/sentry/kernel/taskset_mutex.go:46 +0x3f gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).SendSignal(0xc007116000, 0xc000379e30) pkg/sentry/kernel/task_signals.go:376 +0xa5 gvisor.dev/gvisor/pkg/sentry/kernel/fasync.(*FileAsync).NotifyEvent(0xc007e75030, 0x41) pkg/sentry/kernel/fasync/fasync.go:142 +0x62f gvisor.dev/gvisor/pkg/waiter.(*Queue).Notify(0xc006cb0310, 0x41) pkg/waiter/waiter.go:237 +0xae gvisor.dev/gvisor/pkg/sentry/vfs.(*Inotify).queueEvent(0xc006cb02a0, 0xc002360040) pkg/sentry/vfs/inotify.go:296 +0x258 gvisor.dev/gvisor/pkg/sentry/vfs.(*Watch).Notify(0xc006f9c2c0, {0x0, 0x0}, 0x10, 0x0) pkg/sentry/vfs/inotify.go:609 +0x28d gvisor.dev/gvisor/pkg/sentry/vfs.(*Watches).Notify(0xc006ec3ec8, {0x1be6cf0, 0xc007116000}, {0x0, 0x0}, 0x159c4a0, 0x0, 0x0, 0x0) pkg/sentry/vfs/inotify.go:481 +0x192 gvisor.dev/gvisor/pkg/sentry/fsimpl/tmpfs.(*dentry).InotifyWithParent(0xc00485a3c0, {0x1be6cf0, 0xc007116000}, 0x10, 0x0, 0x65) pkg/sentry/fsimpl/tmpfs/tmpfs.go:405 +0x1d4 gvisor.dev/gvisor/pkg/sentry/vfs.(*Dentry).InotifyWithParent(...) pkg/sentry/vfs/dentry.go:173 gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).DecRef.func1() pkg/sentry/vfs/file_description.go:167 +0xd8 gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescriptionRefs).DecRef(0xc008114d80, 0xc009f792c8) bazel-out/k8-fastbuild-ST-a4501ad48192/bin/pkg/sentry/vfs/file_description_refs.go:131 +0x5f gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).DecRef(0xc008114d80, {0x1be6cf0, 0xc007116000}) pkg/sentry/vfs/file_description.go:161 +0x6f gvisor.dev/gvisor/pkg/sentry/kernel.(*FDTable).dropVFS2(0xc002ef9040, {0x1be6cf0, 0xc007116000}, 0xc008114d80) pkg/sentry/kernel/fd_table.go:168 +0x1eb gvisor.dev/gvisor/pkg/sentry/kernel.(*FDTable).NewFDAtVFS2(0x1be9e60, {0x1be6cf0, 0xc007116000}, 0x9f79401, 0xffffffff, {0xf0}) pkg/sentry/kernel/fd_table.go:476 +0x91 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).NewFDAtVFS2(...) pkg/sentry/kernel/task.go:821 gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.dup3(0xc007116000, 0x470e65, 0x6, 0x0) pkg/sentry/syscalls/linux/vfs2/fd.go:162 +0x18f gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.Dup2(0xc007116000, {{0x3}, {0x6}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/syscalls/linux/vfs2/fd.go:135 +0xf2 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc007116000, 0x21, {{0x3}, {0x6}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:142 +0x9d8 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc007116000, 0x46f779, {{0x3}, {0x6}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:322 +0x6a gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc006f91860, 0x46fc2c, {{0x3}, {0x6}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:282 +0x8f gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc007116000) pkg/sentry/kernel/task_syscall.go:257 +0x3e7 gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc007116000, 0xc007116000) pkg/sentry/kernel/task_run.go:247 +0x16b8 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc007116000) pkg/sentry/kernel/task_run.go:90 +0x35b created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start pkg/sentry/kernel/task_start.go:364 +0x191