| commit | 0ce146dcb28a61f9f9bc1eba7ee69e72ba20bcc7 | [log] [tgz] |
|---|---|---|
| author | Matthew Wilcox (Oracle) <[email protected]> | Thu Dec 21 16:53:57 2023 +0000 |
| committer | Michael Kochera <[email protected]> | Tue Jan 30 23:42:09 2024 +0000 |
| tree | c3416165b99ad1aa346dea37975a43f7ab3ca531 | |
| parent | dd237f4f85182e0a75e9137fbcbd442b5de0fef1 [diff] |
ida: Fix crash in ida_free when the bitmap is empty [ Upstream commit af73483f4e8b6f5c68c9aa63257bdd929a9c194a ] The IDA usually detects double-frees, but that detection failed to consider the case when there are no nearby IDs allocated and so we have a NULL bitmap rather than simply having a clear bit. Add some tests to the test-suite to be sure we don't inadvertently reintroduce this problem. Unfortunately they're quite noisy so include a message to disregard the warnings. BUG=b/321923998 TEST=None RELEASE_NOTE=Fixed CVE-2023-6915 in the linux kernel. cos-patch: security-high Reported-by: Zhenghan Wang <[email protected]> Change-Id: Ia15d4168601427412efa7446451b428d09373316 Signed-off-by: Matthew Wilcox (Oracle) <[email protected]> Signed-off-by: Linus Torvalds <[email protected]> Signed-off-by: Sasha Levin <[email protected]> Reviewed-on: https://cos-review.googlesource.com/c/third_party/kernel/+/64330 Tested-by: Cusky Presubmit Bot <[email protected]> Reviewed-by: Oleksandr Tymoshenko <[email protected]>