FreeBSD lock order reversal (LOR) #281

lock order reversal:
 1st 0xffffff001ada0ba8 zfs (zfs) @ sys/kern/vfs_subr.c:2071
 2nd 0xffffff0008a92848 filedesc structure (filedesc structure) @ sys/kern/vfs_syscalls.c:1720
		
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2a
_witness_debugger() at _witness_debugger+0x2e
witness_checkorder() at witness_checkorder+0x81e
_sx_slock() at _sx_slock+0x55
kern_symlinkat() at kern_symlinkat+0x1f8
syscall() at syscall+0x1bf
Xfast_syscall() at Xfast_syscall+0xab
--- syscall (57, FreeBSD ELF64, symlink), rip = 0x8049cc13c, rsp = 0x7fffffffd6f8, rbp = 0x7fffffffdd10 ---
		

• freebsd-current (thread)