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| author |   Vitaly Mayatskikh <v.mayatskih@gmail.com> | 2009-04-30 15:08:18 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2009-05-02 15:36:09 -0700 |
| commit | 0816178638c15ce5472d39d771a96860dff4141a (patch) | |
| tree | 9db0c3d2192286e818e6f6827fda3602b7d5a466 /mm | |
| parent | mm: close page_mkwrite races (diff) | |
| download | linux-dev-0816178638c15ce5472d39d771a96860dff4141a.tar.xz linux-dev-0816178638c15ce5472d39d771a96860dff4141a.zip | |
pagemap: require aligned-length, non-null reads of /proc/pid/pagemap
The intention of commit aae8679b0ebcaa92f99c1c3cb0cd651594a43915
("pagemap: fix bug in add_to_pagemap, require aligned-length reads of
/proc/pid/pagemap") was to force reads of /proc/pid/pagemap to be a
multiple of 8 bytes, but now it allows to read 0 bytes, which actually
puts some data to user's buffer. According to POSIX, if count is zero,
read() should return zero and has no other results.
Signed-off-by: Vitaly Mayatskikh <v.mayatskih@gmail.com>
Cc: Thomas Tuttle <ttuttle@google.com>
Acked-by: Matt Mackall <mpm@selenic.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
0 files changed, 0 insertions, 0 deletions