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'recoff' is read from disk and used for an argument to memcpy, so if
the value read from disk is larger than the page size, it result to
"general protection fault". This patch add additional range check for
the value, so that disk fuzz won't cause such fault.
Signed-off-by: Naohiro Aota <naota@elisp.net>
Signed-off-by: Christoph Hellwig <hch@lst.de>
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Match coding style line length limitation where checkpatch.pl
reported over-80-character-line warnings.
Signed-off-by: Anton Salikhmetov <alexo@tuxera.com>
Signed-off-by: Christoph Hellwig <hch@tuxera.com>
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Turn a few noisy debug printks that show up during xfstests into
complied out debug print statements.
Signed-off-by: Christoph Hellwig <hch@tuxera.com>
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Signed-off-by: Christoph Hellwig <hch@tuxera.com>
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hfs seems prone to bad things when it encounters on disk corruption. Many
values are read from disk, and used as lengths to memcpy, as an example.
This patch fixes up several of these problematic cases.
o sanity check the on-disk maximum key lengths on mount
(these are set to a defined value at mkfs time and shouldn't differ)
o check on-disk node keylens against the maximum key length for each tree
o fix hfs_btree_open so that going out via free_tree: doesn't wind
up in hfs_releasepage, which wants to follow the very pointer
we were trying to set up:
HFS_SB(sb)->cat_tree = hfs_btree_open()
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failure gets to hfs_releasepage and tries to follow HFS_SB(sb)->cat_tree
Tested with the fsfuzzer; it survives more than it used to.
[hch: ported of commit cf0594625083111ae522496dc1c256f7476939c2 from hfs]
[hch: added the fixes from 5581d018ed3493d226e7a4d645d9c8a5af6c36b]
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Christoph Hellwig <hch@tuxera.com>
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oops and fs corruption; the latter can happen even on valid fs in case of oom.
[hch: port of commit 3d10a15d6919488204bdb264050d156ced20d9aa from hfs]
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Christoph Hellwig <hch@tuxera.com>
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Add the log level and a "hfs: " prefix to all kernel prints. (HFS and HFS+
will use the same prefix, as they share some code and could be merged at some
point.)
Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
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