Bug 112943

I believe the hanging occurs when the Description + Steps to 
Reproduce fields are filled in with specific info. Follow these
steps to reproduce:

1. start on page 
[https://bugzilla.redhat.com/bugzilla/easy_enter_bug.cgi]
2. scroll down and click on the [Step 3. Choosing Your Product] button
3. select [Red Hat Linux]
4. click on the [Step 4. Choosing Component] button
5. select [kernel] Component
6. select [9] Version
7. select [All] Platform
8. click on the [Step 6. Additional Information] button
9. type [Trying to reproduce Bug 112943] in Summary
10. type [kernel-2.4.18-14] in version-release
11. copy/paste into Description:

I am seeing an unexpected access restriction while unlinking/
renaming a file in a directory with a 'sticky bit' (S_ISVTX)
set (see the Steps to Reproduce).

The permission settings of the file allow any 'users' group 
member to modify the file 'stickydir/file'. However an attempt 
to unlink the file or replace it with another file is not allowed.

The current behavior of unlink/rename is superfluous because
it does not increase security -- the unlinking/renaming error
can be bypassed by opening the file and rewriting its contents.

Here is one unintended effect of this access restriction. Say,
I wish to modify the file in a "fail-safe" manner. So I would 
prepare an updated version of a file as a tempfile, and then 
make a single system call: rename(tempfile, file). But because
of the current access restriction, rename() will not work!!!
So, the "fail-safe" is impossible with such a file. Instead, I
have to truncate the file, and then write it piece-by-piece.
BUT if interrupted, the file is left in an inconsistent state.

I believe, the unlink/rename/rmdir should succeed if the access
permissions allow modification of the target file/directory.

Thanks!

12. select [Every time.] in Reproducibility
13. copy/paste into Steps to Reproduce:

#
# Step 1: create a directory with a 'sticky bit' set
#
$ mkdir stickydir
$ chmod 1775 stickydir
$ ls -ld stickydir
rwxrwxr-t   2 user1 users         512 Jan 05 16:10 stickydir

#
# Step 2: create a group-writeable file
#
$ touch stickydir/file
$ chmod 660 stickydir/file
$ ls -l stickydir/file
-rw-rw----   1 user1 users           0 Jan 05 16:11 stickydir/file

#
# Step 3: log in as another user of group 'users'
#
$ su user2
user2's Password:
% groups
users

#
# Step 4: modifying the file succeeds as expected
#
% echo XXX >> stickydir/file
% cat stickydir/file
XXX

#
# Step 5: deleting the file UNEXPECTEDLY FAILS
#
% rm stickydir/file
rm: cannot remove `stickydir/file': Operation not permitted

14. click on the [Open Bugzilla Entry Form] button

I am also seeing this.

Red Hat's current Bugzilla version is 2.18. I am moving all older open bugs to
this version. Any bugs against the older versions will need to be verified that
they are still bugs. This will help me also to sort them better.

Enhancements have been made lately to improve the guided bug entry form. Please
reopen this bug if the problem still occurs.