linux/lib
Lasse Collin 9c1f8594df XZ: Fix incorrect XZ_BUF_ERROR
xz_dec_run() could incorrectly return XZ_BUF_ERROR if all of the
following was true:

 - The caller knows how many bytes of output to expect and only provides
   that much output space.

 - When the last output bytes are decoded, the caller-provided input
   buffer ends right before the LZMA2 end of payload marker.  So LZMA2
   won't provide more output anymore, but it won't know it yet and thus
   won't return XZ_STREAM_END yet.

 - A BCJ filter is in use and it hasn't left any unfiltered bytes in the
   temp buffer.  This can happen with any BCJ filter, but in practice
   it's more likely with filters other than the x86 BCJ.

This fixes <https://bugzilla.redhat.com/show_bug.cgi?id=735408> where
Squashfs thinks that a valid file system is corrupt.

This also fixes a similar bug in single-call mode where the uncompressed
size of a block using BCJ + LZMA2 was 0 bytes and caller provided no
output space.  Many empty .xz files don't contain any blocks and thus
don't trigger this bug.

This also tweaks a closely related detail: xz_dec_bcj_run() could call
xz_dec_lzma2_run() to decode into temp buffer when it was known to be
useless.  This was harmless although it wasted a minuscule number of CPU
cycles.

Signed-off-by: Lasse Collin <lasse.collin@tukaani.org>
Cc: stable <stable@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-21 13:39:59 -07:00
..
lzo
raid6
reed_solomon
xz XZ: Fix incorrect XZ_BUF_ERROR 2011-09-21 13:39:59 -07:00
zlib_deflate
zlib_inflate
.gitignore
argv_split.c
atomic64_test.c atomic: use <linux/atomic.h> 2011-07-26 16:49:47 -07:00
atomic64.c atomic: use <linux/atomic.h> 2011-07-26 16:49:47 -07:00
audit.c
average.c
bcd.c
bch.c
bitmap.c Merge branch 'apei' into apei-release 2011-08-03 11:30:42 -04:00
bitrev.c
bsearch.c
btree.c
bug.c
bust_spinlocks.c
check_signature.c
checksum.c lib/checksum.c: optimize do_csum a bit 2011-07-07 04:52:24 -07:00
cmdline.c
cordic.c
cpu_rmap.c
cpu-notifier-error-inject.c
cpumask.c cpumask: alloc_cpumask_var() use NUMA_NO_NODE 2011-07-26 16:49:44 -07:00
crc7.c
crc8.c
crc16.c
crc32.c atomic: use <linux/atomic.h> 2011-07-26 16:49:47 -07:00
crc32defs.h
crc-ccitt.c
crc-itu-t.c
crc-t10dif.c
ctype.c
debug_locks.c
debugobjects.c
dec_and_lock.c atomic: use <linux/atomic.h> 2011-07-26 16:49:47 -07:00
decompress_bunzip2.c
decompress_inflate.c
decompress_unlzma.c
decompress_unlzo.c
decompress_unxz.c
decompress.c
devres.c devres: fix possible use after free 2011-07-25 20:57:14 -07:00
div64.c
dma-debug.c
dump_stack.c
dynamic_debug.c
extable.c
fault-inject.c fault-injection: add ability to export fault_attr in arbitrary directory 2011-08-03 14:25:20 -10:00
find_last_bit.c
find_next_bit.c
flex_array.c
gcd.c
gen_crc32table.c
genalloc.c lib, Make gen_pool memory allocator lockless 2011-08-03 11:15:57 -04:00
halfmd4.c
hexdump.c
hweight.c
idr.c ida: simplified functions for id allocation 2011-08-03 14:25:20 -10:00
inflate.c
int_sqrt.c
iomap_copy.c
iomap.c iomap: make IOPORT/PCI mapping functions conditional 2011-07-22 18:46:26 +02:00
iommu-helper.c
ioremap.c
irq_regs.c
is_single_threaded.c
kasprintf.c
Kconfig Merge branch 'apei' into apei-release 2011-08-03 11:30:42 -04:00
Kconfig.debug Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2011-07-22 16:45:02 -07:00
Kconfig.kgdb
Kconfig.kmemcheck
klist.c
kobject_uevent.c
kobject.c
kref.c
kstrtox.c lib: make _tolower() public 2011-07-25 20:57:16 -07:00
lcm.c lib/lcm.c: quiet sparse noise 2011-07-25 20:57:15 -07:00
libcrc32c.c
list_debug.c
list_sort.c
llist.c lib, Add lock-less NULL terminated single list 2011-08-03 11:15:56 -04:00
locking-selftest-hardirq.h
locking-selftest-mutex.h
locking-selftest-rlock-hardirq.h
locking-selftest-rlock-softirq.h
locking-selftest-rlock.h
locking-selftest-rsem.h
locking-selftest-softirq.h
locking-selftest-spin-hardirq.h
locking-selftest-spin-softirq.h
locking-selftest-spin.h
locking-selftest-wlock-hardirq.h
locking-selftest-wlock-softirq.h
locking-selftest-wlock.h
locking-selftest-wsem.h
locking-selftest.c
lru_cache.c
Makefile bitops: Move find_next_bit.o from lib-y to obj-y 2011-08-30 10:12:05 -07:00
md5.c crypto: Move md5_transform to lib/md5.c 2011-08-06 18:32:45 -07:00
nlattr.c
parser.c
percpu_counter.c
plist.c plist: Remove the need to supply locks to plist heads 2011-07-08 14:02:53 +02:00
prio_heap.c
prio_tree.c
proportions.c
radix-tree.c tmpfs radix_tree: locate_item to speed up swapoff 2011-08-03 14:25:24 -10:00
random32.c
ratelimit.c
rational.c
rbtree.c
reciprocal_div.c
rwsem-spinlock.c
rwsem.c
scatterlist.c
sha1.c lib/sha1.c: quiet sparse noise about symbol not declared 2011-09-13 16:09:41 -07:00
show_mem.c
smp_processor_id.c
sort.c
spinlock_debug.c
string_helpers.c
string.c
swiotlb.c
syscall.c
test-kstrtox.c
textsearch.c
timerqueue.c
ts_bm.c
ts_fsm.c
ts_kmp.c
uuid.c
vsprintf.c Merge 'akpm' patch series 2011-07-25 21:00:19 -07:00