https://github.com/torvalds/linux
Revision 19a1c4092e7ca1ad1a72ac5535f902c483372cd5 authored by Al Viro on 24 July 2019, 16:45:46 UTC, committed by Al Viro on 26 July 2019, 11:59:06 UTC
We need to drop everything we remove from the tree, whether
mnt_has_parent() is true or not. Usually the bug manifests as a slow
memory leak (leaked struct mount for initramfs); it becomes much more
visible in mount_subtree() users, such as btrfs. There we leak
a struct mount for btrfs superblock being mounted, which prevents
fs shutdown on subsequent umount.
Fixes: 56cbb429d911 ("switch the remnants of releasing the mountpoint away from fs_pin")
Reported-by: Nikolay Borisov <nborisov@suse.com>
Tested-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Tip revision: 19a1c4092e7ca1ad1a72ac5535f902c483372cd5 authored by Al Viro on 24 July 2019, 16:45:46 UTC
fix the struct mount leak in umount_tree()
fix the struct mount leak in umount_tree()
Tip revision: 19a1c40
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| .clang-format | -rw-r--r-- | 14.6 KB |
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| .get_maintainer.ignore | -rw-r--r-- | 71 bytes |
| .gitattributes | -rw-r--r-- | 30 bytes |
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| COPYING | -rw-r--r-- | 423 bytes |
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| README | -rw-r--r-- | 727 bytes |
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