+++ This bug was initially created as a clone of Bug #1100813 +++

--- Additional comment from David Smith on 2014-06-09 18:57:30 CEST ---

(In reply to Martin Cermak from comment #2)
> On rhel7 (kernel-3.10.0-123.el7) I see issues on s390x and ppc64:
> 
> =======
> 
>  7.0 S s390x # stap -p4 ./buildok/nfsd-detailed.stp
> semantic error: No cfa_ops supplied, but needed by DW_OP_call_frame_cfa:
> identifier '$count' at /usr/share/systemtap/tapset/linux/nfsd.stp:1174:22
>         source:         count = kernel_long($count)
>                                             ^
> 
> Pass 2: analysis failed.  [man error::pass2]
> Number of similar error messages suppressed: 59.
> Rerun with -v to see them.
> 
> =======
> 
>  7.0 S ppc64 # stap -p4 ./buildok/nfsd-detailed.stp
> semantic error: not accessible at this address (pc: 0x18178) [man
> error::dwarf]: identifier '$rqstp' at
> /usr/share/systemtap/tapset/linux/nfsd.stp:1099:33
>         dieoffset: 0x4e67a from
> /usr/lib/debug/lib/modules/3.10.0-123.el7.ppc64/kernel/fs/nfsd/nfsd.ko.debug
>         function: nfsd_open at fs/nfsd/vfs.c:814 inlined by nfsd_read at
> fs/nfsd/vfs.c:1120
>         alternative locations: [0x1818c,0x1819f], [0x1819f,0x18440],
> [0x18440,0x1852c], [0x1852c,0x18634], [0x18634,0x18678], [0x18678,0x186bc],
> [0x186bc,0x186cc], [0x186cc,0x186ec]
>         source:         client_ip = addr_from_rqst_str($rqstp)
>                                                        ^
> 
> Pass 2: analysis failed.  [man error::pass2]
> Number of similar error messages suppressed: 7.
> Rerun with -v to see them.
> 
> =======
> 
> This is a RHEL7 specific issue though. Feel free to clone this comment to a
> separate BZ if you wish.

This is certainly a different error and should be a different BZ. The original error here was a stap bug. The above issue looks like a debuginfo quality problem at first glance.