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| author |   Linus Torvalds <torvalds@linux-foundation.org> | 2013-05-10 07:22:35 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-05-10 07:22:35 -0700 |
| commit | 977b58e1dd6fc2a751fb427798bfb8256476c93e (patch) | |
| tree | ee71723ccffda6d183652266134f623d9541d76f /fs | |
| parent | Merge tag 'for-linus' of git://github.com/realmz/blackfin-linux (diff) | |
| parent | m68knommu: enable Timer on coldfire 532x (diff) | |
| download | linux-dev-977b58e1dd6fc2a751fb427798bfb8256476c93e.tar.xz linux-dev-977b58e1dd6fc2a751fb427798bfb8256476c93e.zip | |
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
Pull m68knommu updates from Greg Ungerer:
"The bulk of the changes are generalizing the ColdFire v3 core support
and adding in 537x CPU support. Also a couple of other bug fixes, one
to fix a reintroduction of a past bug in the romfs filesystem nommu
support."
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
m68knommu: enable Timer on coldfire 532x
m68knommu: fix ColdFire 5373/5329 QSPI base address
m68knommu: add support for configuring a Freescale M5373EVB board
m68knommu: add support for the ColdFire 537x family of CPUs
m68knommu: make ColdFire M532x platform support more v3 generic
m68knommu: create and use a common M53xx ColdFire class of CPUs
m68k: remove unused asm/dbg.h
m68k: Set ColdFire ACR1 cache mode depending on kernel configuration
romfs: fix nommu map length to keep inside filesystem
m68k: clean up unused "config ROMVECSIZE"
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/romfs/mmap-nommu.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/fs/romfs/mmap-nommu.c b/fs/romfs/mmap-nommu.c index e1a7779dd3cb..f373bde8f545 100644 --- a/fs/romfs/mmap-nommu.c +++ b/fs/romfs/mmap-nommu.c @@ -49,8 +49,11 @@ static unsigned long romfs_get_unmapped_area(struct file *file, return (unsigned long) -EINVAL; offset += ROMFS_I(inode)->i_dataoffset; - if (offset > mtd->size - len) + if (offset >= mtd->size) return (unsigned long) -EINVAL; + /* the mapping mustn't extend beyond the EOF */ + if ((offset + len) > mtd->size) + len = mtd->size - offset; ret = mtd_get_unmapped_area(mtd, len, offset, flags); if (ret == -EOPNOTSUPP) |