On Tue, Dec 19, 2006 at 09:50:00AM +0000, nick.hudson@dsl.pipex.com wrote:
[snip]
> >Description:
>         Random panics of "panic: vput: ref cnt" with the latest vfs_lookup
> 
>         nick@topcat$ ident /netbsd | grep vfs_lookup
>              $NetBSD: vfs_lookup.c,v 1.75 2006/12/13 13:36:19 yamt Exp $
> 
>         I have a couple of crash dumps, but can't get gdb to give a backtrace atm.

I have one crash dump that seems to work:

#11 0xc0465655 in panic (fmt=0xc08cf4b2 "vput: ref cnt") at /build/dist/src/sys/kern/subr_prf.c:243
#12 0xc0491bd4 in vput (vp=0xccbc3e80) at /build/dist/src/sys/kern/vfs_subr.c:1248
#13 0xc048fa16 in namei (ndp=0xccbe2b88) at /build/dist/src/sys/kern/vfs_lookup.c:298
#14 0xc0436a4b in check_exec (l=0xccbc9f0c, epp=0xccbe2b20, flag=1) at /build/dist/src/sys/kern/kern_exec.c:259
#15 0xc0436e5a in execve1 (l=0xccbc9f0c, path=0x806fc00 <Address 0x806fc00 out of bounds>, args=0x806c4e0, 
    envs=0x806d080, fetch_element=0xc04369f0 <execve_fetch_element>) at /build/dist/src/sys/kern/kern_exec.c:498
#16 0xc0437df1 in sys_execve (l=0xccbc9f0c, v=0xccbe2c48, retval=0xccbe2c68)
    at /build/dist/src/sys/kern/kern_exec.c:405
#17 0xc04fb5c3 in syscall_plain (frame=0xccbe2c88) at /build/dist/src/sys/arch/i386/i386/syscall.c:144
#18 0xc010069d in syscall1 ()
(gdb) fr 13
#13 0xc048fa16 in namei (ndp=0xccbe2b88) at /build/dist/src/sys/kern/vfs_lookup.c:298
298                                     vput(ndp->ni_dvp);
(gdb) list
293                     cnp->cn_nameptr = cnp->cn_pnbuf;
294                     ndp->ni_startdir = dp;
295                     error = lookup(ndp);
296                     if (error != 0) {
297                             if (ndp->ni_dvp) {
298                                     vput(ndp->ni_dvp);
299                             }
300                             PNBUF_PUT(cnp->cn_pnbuf);
301                             return (error);
302                     }
(gdb) print error
$1 = 63 // ENAMETOOLONG

-- 
Juergen Hannken-Illjes - hannken@eis.cs.tu-bs.de - TU Braunschweig (Germany)