Pan Bian 42cb0b9efc exportfs: do not read dentry after free ... [ Upstream commit 2084ac6c50 ] The function dentry_connected calls dput(dentry) to drop the previously acquired reference to dentry. In this case, dentry can be released. After that, IS_ROOT(dentry) checks the condition (dentry == dentry->d_parent), which may result in a use-after-free bug. This patch directly compares dentry with its parent obtained before dropping the reference. Fixes: a056cc8934c("exportfs: stop retrying once we race with rename/remove") Signed-off-by: Pan Bian <bianpan2016@163.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Sasha Levin <sashal@kernel.org>		2018-12-17 09:28:50 +01:00
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Makefile	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
expfs.c	exportfs: do not read dentry after free	2018-12-17 09:28:50 +01:00