Re: do_execve() finding vmspace_destroyed set under load

From: Vladimir Grebenschikov <vova_at_fbsd.ru> Date: Mon, 31 Jan 2005 13:12:12 +0300 · This archive was generated by hypermail 2.4.0 : Wed May 19 2021 - 11:38:27 UTC

В сб, 29/01/2005 в 18:52 -0800, Kris Kennaway пишет: 
> I'm seeing the following code in do_execve() frequently being
> triggered when scripts are executed on my SMP machine under load:

Probably related, I have 100% panic on exec of single linux static
binary, it happens in do_execve

sorry, no console here, just retype:

Fatal trap 12: page fault in kernel mode
current process = 1638 (tcsh)

db> trace
exec_map_first_page(...) at exec_map_first_page+0x32
do_execve(...) at do_execve+0x2df
kern_execve(...) at kern_execve+0x124
execve(...) 
...

(tcsh is parent process)
No problems with other linux or native binaries.

>         if (imgp->vmspace_destroyed) {
>                  /* sorry, no more process anymore. exit gracefully */
> #ifdef MAC
>                 mac_execve_exit(imgp);
>                 if (interplabel != NULL)
>                         mac_vnode_label_free(interplabel);
> #endif
>                 exit1(td, W_EXITCODE(0, SIGABRT));
>                 /* NOT REACHED */
>                 error = 0;
>         }
> 
> Needless to say, the scripts get pretty unhappy when they're summarily
> aborted.  What is the cause of this?
> 
> Kris
-- 
Vladimir B. Grebenchikov
vova_at_fbsd.ru