Raghavendra Gowdappa bff265f8bc performance/write-behind: fix use-after-free in readdirp
Two issues were found:
1. in wb_readdirp_cbk, inode should unrefed after wb_inode is
unlocked. Otherwise, inode and hence the context wb_inode can be freed
by the type we try to unlock wb_inode
2. wb_readdirp_mark_end iterates over a list of wb_inodes of children
of a directory. But inodes could've been freed and hence the list
might be corrupted. To fix take a reference on inode before adding it
to invalidate_list of parent.

Change-Id: I911b0e0b2060f7f41ded0b05db11af6f9b7c09c5
Signed-off-by: Raghavendra Gowdappa <rgowdapp@redhat.com>
Updates: bz#1678570
(cherry picked from commit 64cc4458918e8c8bfdeb114da0a6501b2b98491a)
2019-02-22 03:33:07 +00:00
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Gluster

Gluster is a software defined distributed storage that can scale to several petabytes. It provides interfaces for object, block and file storage.

Development

Contributions to gluster in the form of patches and new feature additions can be made by following steps outlined at Developers Guide.

Documentation

The Gluster documentation can be found at Gluster Docs.

Deployment

Quick instructions to build and install can be found in INSTALL file.

Testing

GlusterFS source contains some functional tests under tests/ directory. All these tests are run against every patch submitted for review. If you want your patch to be tested, please add a .t test file as part of your patch submission. You can also submit a patch to only add a .t file for the test case you are aware of.

To run these tests, on your test-machine, just run ./run-tests.sh. Don't run this on a machine where you have 'production' glusterfs is running, as it would blindly kill all gluster processes in each runs.

If you are sending a patch, and want to validate one or few specific tests, then run a single test by running the below command.

  bash# /bin/bash ${path_to_gluster}/tests/basic/rpc-coverage.t

You can also use prove tool if available in your machine, as follows.

  bash# prove -vmfe '/bin/bash' ${path_to_gluster}/tests/basic/rpc-coverage.t

Maintainers

The list of Gluster maintainers is available in MAINTAINERS file.

License

Gluster is dual licensed under GPLV2 and LGPLV3+.

Please visit the Gluster Home Page to find out more about Gluster.

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