serenity: Assistant: ../Kernel/Thread.cpp:183 in void Kernel::Thread::block

Running Assistant crashes the kernel.

Assistant(31:31): Started thread "", tid = 32
Assistant(31:32): perror(): fstatat: No such file or directory
Assistant(31:32): perror(): fstatat: No such file or directory
Assistant(31:32): perror(): fstatat: Bad fd number
Assistant(31:32): perror(): fstatat: Bad fd number
Assistant(31:32): perror(): fstatat: Bad fd number
Assistant(31:32): perror(): fstatat: Bad fd number
Assistant(31:32): perror(): fstatat: Bad fd number
Assistant(31:32): perror(): fstatat: Bad fd number
Assistant(31:32): perror(): fstatat: Bad fd number
Assistant(31:32): perror(): fstatat: Bad fd number
Assistant(31:32): perror(): fstatat: Bad fd number
Assistant(31:32): perror(): fstatat: Bad fd number
Assistant(31:32): perror(): fstatat: Bad fd number
Assistant(31:32): perror(): fstatat: Bad fd number
Assistant(31:32): perror(): fstatat: Bad fd number
Assistant(31:32): perror(): fstatat: Bad fd number
Assistant(31:32): perror(): fstatat: Bad fd number
Assistant(31:32): perror(): fstatat: Bad fd number
Assistant(31:32): perror(): fstatat: Bad fd number
Assistant(31:32): perror(): fstatat: Bad fd number
Assistant(31:32): perror(): fstatat: Bad fd number
Assistant(31:32): perror(): fstatat: Bad fd number
Assistant(31:32): perror(): fstatat: Bad fd number
[Assistant(31:31)]: ASSERTION FAILED: !m_in_block
[Assistant(31:31)]: ../Kernel/Thread.cpp:183 in void Kernel::Thread::block(Kernel::Mutex&, Kernel::ScopedSpinLock<Kernel::SpinLock<unsigned char> >&, u32)
[#0 Assistant(31:31)]: 0x00000000c0804a43
[#0 Assistant(31:31)]: 0x00000000c080486c
[#0 Assistant(31:31)]: 0x00000000c070d6bd
[#0 Assistant(31:31)]: 0x00000000c04985f1
[#0 Assistant(31:31)]: 0x00000000c049c865
[#0 Assistant(31:31)]: 0x00000000c0701e14
[#0 Assistant(31:31)]: 0x00000000c070f2d1
[#0 Assistant(31:31)]: 0x00000000c04985f1
[#0 Assistant(31:31)]: 0x00000000c049aec2
[#0 Assistant(31:31)]: 0x00000000c03aa15d
[#0 Assistant(31:31)]: 0x00000000c03b3ac2
[#0 Assistant(31:31)]: 0x00000000c045f44a
[#0 Assistant(31:31)]: 0x00000000c04618fe
[#0 Assistant(31:31)]: 0x00000000c046299a
[#0 Assistant(31:31)]: 0x00000000c064e6fe
[#0 Assistant(31:31)]: 0x00000000c05b5263
[#0 Assistant(31:31)]: 0x00000000c05b2f89