Re: KASSERT(ci->ci_ilevel < IPL_HIGH) failed when running a linux binary

[Arnaud Lacombe <lacombar%gmail.com@localhost>]

Hi,

On Fri, Apr 16, 2010 at 11:12 PM, Mindaugas Rasiukevicius
<rmind%netbsd.org@localhost> wrote:
> One of the following printf()s are trying to print a non-terminated
> string (thus strlen(), inside, traps):
>
> http://nxr.netbsd.org/xref/src/sys/kern/exec_elf.c?r=1.20#882
>
> Fail is unusual due to kprintf_mtx, which is at IPL_HIGH, and protects
> kprintf().  Trap at such level is not expected and triggers asserts a
> bit earlier.
>
What is not consistent is that it's taking I/O/cache/VM activity
(caused by grep) to trigger the crash. I left the binary ran in an
infinite loop for a few minutes before launching grep and everything
was fine. The message was printed without trouble and the binary ran
finely too. As gcc was called without argument, it completed almost
instantly. If that was as trivial as a bad call to printf, it would
have failed on the first pass, doesn't it ?

 - Arnaud