binfmt_elf: fix corner case kfree of uninitialized data
authorAlan Cox <alan@linux.intel.com>
Tue, 18 Dec 2012 00:02:09 +0000 (16:02 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Tue, 18 Dec 2012 01:15:19 +0000 (17:15 -0800)
commit6899e92d65c490c5292752718ff277b123f8c00a
tree9f3a6ebfc8bcf68ec5d74bfc12659e719ca61db3
parent323c1260ba2c4b5c4b2a1e9ab6657cde54ccf554
binfmt_elf: fix corner case kfree of uninitialized data

If elf_core_dump() is called and fill_note_info() fails in the kmalloc()
then it returns 0 but has not yet initialised all the needed fields.  As a
result we do a kfree(randomness) after correctly skipping the thread data.

[akpm@linux-foundation.org: checkpatch fixes]
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
fs/binfmt_elf.c