Pan Bian 2084ac6c50 exportfs: do not read dentry after free ...

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 <[email protected]>
Signed-off-by: Al Viro <[email protected]>

2018-11-23 09:08:17 -05:00

..

expfs.c

exportfs: do not read dentry after free

2018-11-23 09:08:17 -05:00

Makefile

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