Re: ext2fs panic with Dfly 1.5.2

[Csaba Henk <csaba.henk@xxxxxxx>]

On 2006-03-29, Csaba Henk <csaba.henk@xxxxxxx> wrote:
> I got the following panic after mounting an ext2 partition,
> when doing an "ls" on the mount point.

Duh, I just see that ext2fs is a module, and the backtrace could be
more useful with the respective symbols inserted... So,

Fatal trap 3: breakpoint instruction fault while in kernel mode
instruction pointer     = 0x8:0xc04a0f1a
stack pointer           = 0x10:0xcaf416b4
frame pointer           = 0x10:0xcaf416bc
code segment            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, def32 1, gran 1
processor eflags        = interrupt enabled, IOPL = 0
current process         = 12 (ls)
current thread          = pri 6

panic: from debugger
Uptime: 1m16s

#10 0xc04a1e9f in calltrap () at /usr/dispatch/src/sys/i386/i386/exception.s:774
#11 0xc04150c4 in ufs_bmap (ap=0xcaf418f8) at /usr/dispatch/src/sys/vfs/ufs/ufs_bmap.c:96
#12 0xc041bba2 in ufs_vnoperate (ap=0x0) at /usr/dispatch/src/sys/vfs/ufs/ufs_vnops.c:2413
#13 0xc030054a in vop_bmap (ops=0xc0bfae84, vp=0x0, loffset=Unhandled dwarf expression opcode 0x93
) at /usr/dispatch/src/sys/kern/vfs_vopops.c:859
#14 0xc041b31e in ufs_strategy (ap=0x0) at /usr/dispatch/src/sys/vfs/ufs/ufs_vnops.c:1807
#15 0xc041bba2 in ufs_vnoperate (ap=0x0) at /usr/dispatch/src/sys/vfs/ufs/ufs_vnops.c:2413
#16 0xc0300580 in vop_strategy (ops=0x0, vp=0xc0ba3908, bio=0xc0bfae30) at /usr/dispatch/src/sys/kern/vfs_vopops.c:874
#17 0xc02e7304 in vn_strategy (vp=0xc0ba3908, bio=0xc0bfae84) at /usr/dispatch/src/sys/kern/vfs_bio.c:2779
#18 0xc02e403c in bread (vp=0xc0ba3908, loffset=Unhandled dwarf expression opcode 0x93
) at /usr/dispatch/src/sys/kern/vfs_bio.c:608
#19 0xcaf62914 in ext2_read (ap=0xcaf41a7c) at ext2_readwrite.c:109
#20 0xc03000d0 in vop_read (ops=0x0, vp=0x0, uio=0x0, ioflag=0, cred=0x0) at /usr/dispatch/src/sys/kern/vfs_vopops.c:506
#21 0xcaf5ef9e in ext2_readdir (ap=0xcaf41b30) at /usr/dispatch/src/sys/vfs/gnu/ext2fs/ext2_lookup.c:178
#22 0xc0300406 in vop_readdir (ops=0x0, vp=0x0, uio=0x0, cred=0x0, eofflag=0x0, ncookies=0x0, cookies=0x0)
    at /usr/dispatch/src/sys/kern/vfs_vopops.c:759
#23 0xc02fd7ba in kern_getdirentries (fd=0, buf=0x280b1000 <Address 0x280b1000 out of bounds>, count=4096, basep=0xcaf41be8, res=0x0,
    direction=UIO_USERSPACE) at /usr/dispatch/src/sys/kern/vfs_syscalls.c:2904
#24 0xc02fd8de in getdirentries (uap=0xcaf41c24) at /usr/dispatch/src/sys/kern/vfs_syscalls.c:2946
#25 0xc04b5b67 in syscall2 (frame=
      {tf_fs = 47, tf_es = 47, tf_ds = 47, tf_edi = 1268, tf_esi = 671793216, tf_ebp = -1077939480, tf_isp = -889971340, tf_ebx = 0, tf_edx = 671793216, tf_ecx = 671793152, tf_eax = 479, tf_trapno = 12, tf_err = 2, tf_eip = 134824764, tf_cs = 31, tf_eflags = 582, tf_esp = -1077939508, tf_ss = 47}) at /usr/dispatch/src/sys/i386/i386/trap.c:1420
#26 0xc04a1f2a in Xint0x80_syscall () at /usr/dispatch/src/sys/i386/i386/exception.s:852

Regards,
Csaba