Hi Zorro,
The problem is that cifs.ko is returning -EACCES from fcntl(2) called
in do_test_equal_file_lock() but it is expecting -EAGAIN to be
returned, so it hangs in wait4(2):
...
[pid 14846] fcntl(3, F_SETLK, {l_type=F_WRLCK, l_whence=SEEK_SET, l_start=0, l_len=1}) = -1 EACCES (Permission denied)
[pid 14846] wait4(-1,
The man page says:
F_SETLK (struct flock *)
Acquire a lock (when l_type is F_RDLCK or F_WRLCK) or release a
lock (when l_type is F_UNLCK) on the bytes specified by the
l_whence, l_start, and l_len fields of lock. If a conflicting
lock is held by another process, this call returns -1 and sets
errno to EACCES or EAGAIN. (The error returned in this case
differs across implementations, so POSIX requires a portable ap‐
plication to check for both errors.)
so fcntl_lock_corner_tests should also handle -EACCES.
