CVS commit: src/sys/compat/netbsd32

["Maxime Villard" <maxv%netbsd.org@localhost>]

Module Name:    src
Committed By:   maxv
Date:           Wed Jan  1 09:17:45 UTC 2020

Modified Files:
        src/sys/compat/netbsd32: netbsd32_compat_43.c

Log Message:
Fix sizeof mismatch in copyin. This leads to a user-triggerable stack
overflow. On my test build at least, by luck, the compiler orders the
variables in a way that the overflow hits only local structures which
haven't yet been initialized and used, so the overflow is harmless.

Very easily seeable with kASan - just invoke the syscall from a 32bit
binary.


To generate a diff of this commit:
cvs rdiff -u -r1.58 -r1.59 src/sys/compat/netbsd32/netbsd32_compat_43.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.