panic truss'ing linux ls
kmacy at fsmware.com
Sun Nov 9 14:14:26 PST 2003
yep. Right now I'm just trying to get my Xi Graphics X server running,
trouble is it relies on FreeBSD 3 compatibility.
On Sun, 9 Nov 2003, Matthew Dillon wrote:
> :so I tried trussing it. Same panic. It looks like I may be to blame as
> :it is dying in elf_putfiles, which is code added to core dump for
> :checkpointing. I'll see if it is anything obvious.
> Hmm. Either fp->f_data is NULL or vp->v_mount is NULL on line
> 1256 of imgact_elf.c.
> :> #6 0xc0174e2b in elf_putfiles (p=0xcdd5fc40, dst=0xce148000, off=0xce601a14)
> :> at /home/source/dragonfly/src/sys/kern/imgact_elf.c:1256
> :> #7 0xc0174bb3 in elf_puthdr (p=0xcdd5fc40, dst=0xce148000, off=0xce601a14, status=0xc7c91d10,
> :> fpregset=0xc7c91d78, psinfo=0xc7c91e28, numsegs=10)
> :> (kgdb) info locals
> :> off = (int *) 0xce601a14
> :> i = 3
> :> cfh = (struct ckpt_filehdr *) 0xce148f60
> :> cfi = (struct ckpt_fileinfo *) 0x0
> :> fp = (struct file *) 0x0
> :> vp = (struct vnode *) 0x0
> These may not be accurate due to compiler optimizations. In fact, fp
> cannot be NULL because the other cfi-> assignments succeeded prior to
> the fatal trap.
> You need to dereference p->p_fd->fd_ofiles[i] to get an accurate fp
> and from there you can figure out what is going on.
> Matthew Dillon
> <dillon at xxxxxxxxxxxxx>
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