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| author | Justus Winter <justus@gnupg.org> | 2016-05-22 00:52:29 +0200 |
|---|---|---|
| committer | Justus Winter <justus@gnupg.org> | 2016-05-22 14:05:15 +0200 |
| commit | 60d14f5b3c4ea27af6f4220a15947c328bc888ee (patch) | |
| tree | 66f3ff31a062972d9c9af3c9e10aaae2e62889ec /usermux | |
| parent | 0ab3825f250486453892e3e18a702a44538bff6d (diff) | |
ext2fs: fix pager use-after-free
Previously, pagers had no reference for being part of a node, only for
having a send right made for them. Hence we sometimes saw
use-after-free errors if the kernel did give up that send right,
typically while deleting files. Keep a weak reference as long as the
pager is referenced by a node.
* ext2fs/pager.c (pager_clear_user_data): Assert that 'pager' has been
NULLed.
(pager_dropweak): Drop the weak reference and NULL 'pager'.
(diskfs_get_filemap): Simplify. Acquire a weak reference.
Diffstat (limited to 'usermux')
0 files changed, 0 insertions, 0 deletions