[Bugs] [Bug 1668286] READDIRP incorrectly updates posix-acl inode ctx

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1668286

Raghavendra G <rgowdapp at redhat.com> changed:

           What    |Removed                     |Added
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                 CC|                            |homma at allworks.co.jp,
                   |                            |rgowdapp at redhat.com
              Flags|                            |needinfo?(homma at allworks.co
                   |                            |.jp)



--- Comment #2 from Raghavendra G <rgowdapp at redhat.com> ---
(In reply to homma from comment #0)
> Additional info:
> 
> In readdir-ahead.c, rda_fill_fd_cbk() replaces dentries and zeroes out iatts
> exept for ia_gfid and ia_type.
> Then in posix-acl.c, posix_acl_readdirp_cbk() updates its inode ctx by that
> zeroed permission, and permission is denied.

The expectation is kernel would do a fresh lookup for getting other attributes
like permissions and that's what Glusterfs indicates kernel too - that only
entry information (mapping of path to inode/gfid)  is valid and the attributes
are not valid. How did you conclude zeroed out permissions are set on
posix-acl? Did you see a call like setattr or any setxattr updating posix acls?
If yes, whether these zeroed out attributes were sent from kernel?

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