tree c352b63dc2d73e4033d064bb4b5437d76157bfa8
parent b5173119ff10c5538e92a7957a50887ae170b8da
author Kyle McMartin <kyle@mcmartin.ca> 1139345927 -0800
committer Linus Torvalds <torvalds@g5.osdl.org> 1139357553 -0800

[PATCH] sys_hpux: fix strlen_user() race

Userspace can alter the string after the kernel has run strlen_user().

Also: the strlen_user() return value includes the \0, so fix that.

Also: handle EFAULT from strlen_user().

It's unlikely anyone is using this code.  Very, very unlikely.  If I
remember correctly, CONFIG_HPUX turns this code on, but one would actually
need CONFIG_BINFMT_SOM to load a binary that could cause a problem, and
BINFMT_SOM has had an #error in it for quite some time.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>