https://github.com/torvalds/linux
Revision 25d202ed820ee347edec0bf3bf553544556bf64b authored by Eric W. Biederman on 22 October 2018, 15:21:38 UTC, committed by Eric W. Biederman on 08 November 2018, 06:14:21 UTC
It was recently pointed out that the one instance of testing MNT_LOCKED
outside of the namespace_sem is in ksys_umount.
Fix that by adding a test inside of do_umount with namespace_sem and
the mount_lock held. As it helps to fail fails the existing test is
maintained with an additional comment pointing out that it may be racy
because the locks are not held.
Cc: stable@vger.kernel.org
Reported-by: Al Viro <viro@ZenIV.linux.org.uk>
Fixes: 5ff9d8a65ce8 ("vfs: Lock in place mounts from more privileged users")
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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- v2.6.18-rc3
- v2.6.18-rc2
- v2.6.18-rc1
- v2.6.18
- v2.6.17-rc6
- v2.6.17-rc5
- v2.6.17-rc4
- v2.6.17-rc3
- v2.6.17-rc2
- v2.6.17-rc1
- v2.6.17
- v2.6.16-rc6
- v2.6.16-rc5
- v2.6.16-rc4
- v2.6.16-rc3
- v2.6.16-rc2
- v2.6.16-rc1
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- v2.6.15-rc7
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- v2.6.15-rc5
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- v2.6.15
- v2.6.14-rc5
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- v2.6.14
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- v2.6.12
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History 
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Tip revision: 25d202ed820ee347edec0bf3bf553544556bf64b authored by Eric W. Biederman on 22 October 2018, 15:21:38 UTC
mount: Retest MNT_LOCKED in do_umount
mount: Retest MNT_LOCKED in do_umount
Tip revision: 25d202e
| File | Mode | Size |
|---|---|---|
| Documentation | ||
| LICENSES | ||
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| drivers | ||
| firmware | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | -rw-r--r-- | 12.7 KB |
| .cocciconfig | -rw-r--r-- | 59 bytes |
| .get_maintainer.ignore | -rw-r--r-- | 31 bytes |
| .gitattributes | -rw-r--r-- | 30 bytes |
| .gitignore | -rw-r--r-- | 1.5 KB |
| .mailmap | -rw-r--r-- | 10.5 KB |
| COPYING | -rw-r--r-- | 423 bytes |
| CREDITS | -rw-r--r-- | 96.4 KB |
| Kbuild | -rw-r--r-- | 2.2 KB |
| Kconfig | -rw-r--r-- | 563 bytes |
| MAINTAINERS | -rw-r--r-- | 470.2 KB |
| Makefile | -rw-r--r-- | 59.7 KB |
| README | -rw-r--r-- | 727 bytes |
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