- 05 Feb, 2018 27 commits
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Andy Whitcroft authored
CVE-2017-5753 (revert embargoed) CVE-2017-5715 (revert embargoed) This reverts commit ba5013cf. Signed-off-by:
Andy Whitcroft <apw@canonical.com> Signed-off-by:
Kleber Sacilotto de Souza <kleber.souza@canonical.com>
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Andy Whitcroft authored
CVE-2017-5753 (revert embargoed) CVE-2017-5715 (revert embargoed) This reverts commit 5e7fa023. Signed-off-by:
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Andy Whitcroft authored
CVE-2017-5753 (revert embargoed) CVE-2017-5715 (revert embargoed) This reverts commit ff2699c9. Signed-off-by:
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Andy Whitcroft authored
CVE-2017-5753 (revert embargoed) CVE-2017-5715 (revert embargoed) This reverts commit 0f76330e. Signed-off-by:
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Andy Whitcroft authored
CVE-2017-5753 (revert embargoed) CVE-2017-5715 (revert embargoed) This reverts commit 70df98e2. Signed-off-by:
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Andy Whitcroft authored
CVE-2017-5753 (revert embargoed) CVE-2017-5715 (revert embargoed) This reverts commit f3fd3c0a. Signed-off-by:
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Andy Whitcroft authored
CVE-2017-5753 (revert embargoed) CVE-2017-5715 (revert embargoed) This reverts commit 44c314e1. Signed-off-by:
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Andy Whitcroft authored
CVE-2017-5753 (revert embargoed) CVE-2017-5715 (revert embargoed) This reverts commit 0c42069d. Signed-off-by:
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Andy Whitcroft authored
CVE-2017-5753 (revert embargoed) CVE-2017-5715 (revert embargoed) This reverts commit 88b00371. Signed-off-by:
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Andy Whitcroft authored
CVE-2017-5753 (revert embargoed) CVE-2017-5715 (revert embargoed) This reverts commit 750beb6c. Signed-off-by:
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Andy Whitcroft authored
CVE-2017-5753 (revert embargoed) CVE-2017-5715 (revert embargoed) This reverts commit d3d0f0a2. Signed-off-by:
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Andy Whitcroft authored
CVE-2017-5753 (revert embargoed) CVE-2017-5715 (revert embargoed) This reverts commit 8c36ea34. Signed-off-by:
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Andy Whitcroft authored
CVE-2017-5753 (revert embargoed) CVE-2017-5715 (revert embargoed) This reverts commit 8339cae2. Signed-off-by:
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Andy Whitcroft authored
CVE-2017-5753 (revert embargoed) CVE-2017-5715 (revert embargoed) This reverts commit b554560f. Signed-off-by:
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Andy Whitcroft authored
CVE-2017-5753 (revert embargoed) CVE-2017-5715 (revert embargoed) This reverts commit a1c61c3a. Signed-off-by:
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Andy Whitcroft authored
CVE-2017-5753 (revert embargoed) CVE-2017-5715 (revert embargoed) This reverts commit 92763281. Signed-off-by:
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Andy Whitcroft authored
CVE-2017-5753 (revert embargoed) CVE-2017-5715 (revert embargoed) This reverts commit 844132fe. Signed-off-by:
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Andy Whitcroft authored
CVE-2017-5753 (revert embargoed) CVE-2017-5715 (revert embargoed) This reverts commit b6ea5c00. Signed-off-by:
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Andy Whitcroft authored
CVE-2017-5753 (revert embargoed) CVE-2017-5715 (revert embargoed) This reverts commit 087580bf. Signed-off-by:
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Andy Whitcroft authored
CVE-2017-5753 (revert embargoed) CVE-2017-5715 (revert embargoed) This reverts commit e8d5c968. Signed-off-by:
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Andy Whitcroft authored
CVE-2017-5753 (revert embargoed) CVE-2017-5715 (revert embargoed) This reverts commit 4e1b8db1. Signed-off-by:
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Andy Whitcroft authored
CVE-2017-5753 (revert embargoed) CVE-2017-5715 (revert embargoed) This reverts commit bf2fe22f. Signed-off-by:
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Andy Whitcroft authored
Revert "UBUNTU: SAUCE: x86/microcode: Extend post microcode reload to support IBPB feature -- repair missmerge" CVE-2017-5753 (revert embargoed) CVE-2017-5715 (revert embargoed) This reverts commit 06afd4f0. Signed-off-by:
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Andy Whitcroft authored
CVE-2017-5753 (revert embargoed) CVE-2017-5715 (revert embargoed) This reverts commit fc26acce. Signed-off-by:
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Andy Whitcroft authored
CVE-2017-5753 (revert embargoed) CVE-2017-5715 (revert embargoed) This reverts commit 6f13941a. Signed-off-by:
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Andy Whitcroft authored
CVE-2017-5753 (revert embargoed) CVE-2017-5715 (revert embargoed) This reverts commit 36c867e8. Signed-off-by:
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Andy Whitcroft authored
CVE-2017-5753 (revert embargoed) CVE-2017-5715 (revert embargoed) This reverts commit 86d33097. Signed-off-by:
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- 02 Feb, 2018 1 commit
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Mohamed Ghannam authored
inet->hdrincl is racy, and could lead to uninitialized stack pointer usage, so its value should be read only once. Fixes: c008ba5b ("ipv4: Avoid reading user iov twice after raw_probe_proto_opt") Signed-off-by:
Mohamed Ghannam <simo.ghannam@gmail.com> Reviewed-by:
Eric Dumazet <edumazet@google.com> Signed-off-by:
David S. Miller <davem@davemloft.net> CVE-2017-17712 (backported from commit 8f659a03 upstream) Signed-off-by:
Khalid Elmously <khalid.elmously@canonical.com> Acked-by:
Colin Ian King <colin.king@canonical.com> Signed-off-by:
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- 29 Jan, 2018 1 commit
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Andy Whitcroft authored
BugLink: http://bugs.launchpad.net/bugs/1745338Signed-off-by:
Seth Forshee <seth.forshee@canonical.com> Acked-by:
Kamal Mostafa <kamal@canonical.com> Signed-off-by:
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- 23 Jan, 2018 11 commits
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Al Viro authored
we need to take care of failure exit as well - pages already in bio should be dropped by analogue of bio_unmap_pages(), since their refcounts had been bumped only once per reference in bio. Cc: stable@vger.kernel.org Signed-off-by:
Al Viro <viro@zeniv.linux.org.uk> CVE-CVE-2017-12190 (backported from commit 2b04e8f6) [klebers: page_cache_release() is defined as put_page(), but keep it as page_cache_release() for consistency with the rest of the code.] Signed-off-by:
Stefan Bader <stefan.bader@canonical.com> Acked-by:
Thadeu Lima de Souza Cascardo <cascardo@canonical.com> Signed-off-by:
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Andreas Gruenbacher authored
To reduce amount of damage caused by single bad block, we limit number of inodes sharing an xattr block to 1024. Thus there can be more xattr blocks with the same contents when there are lots of files with the same extended attributes. These xattr blocks naturally result in hash collisions and can form long hash chains and we unnecessarily check each such block only to find out we cannot use it because it is already shared by too many inodes. Add a reusable flag to cache entries which is cleared when a cache entry has reached its maximum refcount. Cache entries which are not marked reusable are skipped by mb_cache_entry_find_{first,next}. This significantly speeds up mbcache when there are many same xattr blocks. For example for xattr-bench with 5 values and each process handling 20000 files, the run for 64 processes is 25x faster with this patch. Even for 8 processes the speedup is almost 3x. We have also verified that for situations where there is only one xattr block of each kind, the patch doesn't have a measurable cost. [JK: Remove handling of setting the same value since it is not needed anymore, check for races in e_reusable setting, improve changelog, add measurements] Signed-off-by:Andreas Gruenbacher <agruenba@redhat.com> Signed-off-by:
Jan Kara <jack@suse.cz> Signed-off-by:
Theodore Ts'o <tytso@mit.edu> (cherry picked from commit 6048c64b) CVE-2015-8952 Signed-off-by:
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Andreas Gruenbacher authored
Get rid of field _e_hash_list_head in cache entries and add bit field e_referenced instead. Signed-off-by:
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Jan Kara authored
Since old mbcache code is gone, let's rename new code to mbcache since number 2 is now meaningless. This is just a mechanical replacement. Signed-off-by:
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Jan Kara authored
Both ext2 and ext4 are now converted to mbcache2. Remove the old mbcache code. Signed-off-by:
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Jan Kara authored
When someone tried to set xattr to the same value (i.e., not changing anything) we did all the work of removing original xattr, possibly breaking references to shared xattr block, inserting new xattr, and merging xattr blocks again. Since this is not so rare operation and it is relatively cheap for us to detect this case, check for this and shortcut xattr setting in that case. Signed-off-by:
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Andreas Gruenbacher authored
This variable, introduced in commit 9c191f70, is unnecessary: it is set once the module has been initialized correctly, and ext4_fill_super cannot run unless the module has been initialized correctly. Signed-off-by:
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Jan Kara authored
Currently we maintain perfect LRU list by moving entry to the tail of the list when it gets used. However these operations on cache-global list are relatively expensive. In this patch we switch to lazy updates of LRU list. Whenever entry gets used, we set a referenced bit in it. When reclaiming entries, we give referenced entries another round in the LRU. Since the list is not a real LRU anymore, rename it to just 'list'. In my testing this logic gives about 30% boost to workloads with mostly unique xattr blocks (e.g. xattr-bench with 10 files and 10000 unique xattr values). Signed-off-by:
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Jan Kara authored
So far number of entries in mbcache is limited only by the pressure from the shrinker. Since too many entries degrade the hash table and generally we expect that caching more entries has diminishing returns, limit number of entries the same way as in the old mbcache to 16 * hash table size. Once we exceed the desired maximum number of entries, we schedule a backround work to reclaim entries. If the background work cannot keep up and the number of entries exceeds two times the desired maximum, we reclaim some entries directly when allocating a new entry. Signed-off-by:
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Jan Kara authored
The conversion is generally straightforward. The only tricky part is that xattr block corresponding to found mbcache entry can get freed before we get buffer lock for that block. So we have to check whether the entry is still valid after getting buffer lock. Signed-off-by:
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Jan Kara authored
The conversion is generally straightforward. We convert filesystem from a global cache to per-fs one. Similarly to ext4 the tricky part is that xattr block corresponding to found mbcache entry can get freed before we get buffer lock for that block. So we have to check whether the entry is still valid after getting the buffer lock. Signed-off-by:
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