tree ef2341c5034451ae55e5c0ca0a727a4455ec6c44
parent 53e0ee9fc59cb17fcad57e481b5889c791afe6c3
author Chen Gang <gang.chen@asianux.com> 1390871233 -0800
committer Linus Torvalds <torvalds@linux-foundation.org> 1390885360 -0800

kernel/kexec.c: use vscnprintf() instead of vsnprintf() in vmcoreinfo_append_str()

vsnprintf() may let 'r' larger than sizeof(buf), in this case, if 'r' is
also less than "vmcoreinfo_max_size - vmcoreinfo_size" (left size of
destination buffer), next memcpy() will read the unexpected addresses.

Signed-off-by: Chen Gang <gang.chen@asianux.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>