twx-linux

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Jeff Layton c7a20ed295 ceph: clean up unsafe d_parent accesses in build_dentry_path

[ Upstream commit c6b0b656ca ]

While we hold a reference to the dentry when build_dentry_path is
called, we could end up racing with a rename that changes d_parent.
Handle that situation correctly, by using the rcu_read_lock to
ensure that the parent dentry and inode stick around long enough
to safely check ceph_snap and ceph_ino.

Link: http://tracker.ceph.com/issues/18148
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: Yan, Zheng <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2017-10-21 17:09:06 +02:00

acl.c

ceph: fix recursion between ceph_set_acl() and __ceph_setattr()

2017-05-25 14:30:13 +02:00

addr.c

ceph: fix readpage from fscache

2017-09-07 08:34:09 +02:00

cache.c

ceph: fix readpage from fscache

2017-09-07 08:34:09 +02:00

cache.h

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