Re: KASSERT in exec_elf.c for DYN executable when p_align==0

[christos%astron.com@localhost (Christos Zoulas)]

In article <20180317225722.GA1538@neva>,
Alexander Nasonov  <alnsn%yandex.ru@localhost> wrote:
>Coverity (CID 1427746) complains about a division by zero when
>align is 0 in all PT_LOAD headers.
>
>I tried reproducing the problem but the code in question is inside
>'if (offset < epp->ep_vm_minaddr)' and it isn't easily reproducable.
>
>However, I hit KASSERT panic:
>
>"(offset & (align - 1)) == 0" file sys/kern/exec_elf.c, line 139.
>
>Steps to reproduce (on amd64 compiled with MKPIE=yes):
>
>bvi -s 0x0e2 /bin/echo # change 20 to 00
>bvi -s 0x11a /bin/echo # change 20 to 00
>
>/bin/echo # boom!
>
>I would be nice to perform sanity checks of tainted executable
>instead of panicing.

Fixed, thanks.

christos