Created attachment 1594364 [details]
reproducing systemtap script

Description of problem:
I get following semantic error when running systemtap script (see attachment):

===

Pass 1: parsed user script and 497 library scripts using 434732virt/106232res/9572shr/96468data kb, in 240usr/50sys/296real ms.
semantic error: failed to retrieve location attribute for 'skb' [man error::dwarf]: identifier '$skb' at /usr/share/systemtap/tapset/linux/networking.stp:123:35
        dieoffset: 0x951f0cd from /usr/lib/debug/lib/modules/4.18.0-107.el8.x86_64/vmlinux
        function: arch_static_branch at ./arch/x86/include/asm/jump_label.h:36:2 inlined by netif_receive_skb_internal at net/core/dev.c:5038:6 inlined by netif_receive_skb_internal at net/core/dev.c:5029:12
        source: 	try { dev_name = get_netdev_name($skb->dev) } catch { }
                	                                 ^

semantic error: unresolved type : identifier '$skb' at :123:35
        source: 	try { dev_name = get_netdev_name($skb->dev) } catch { }
                	                                 ^

semantic error: failed to retrieve location attribute for 'skb' [man error::dwarf]: identifier '$skb' at :124:17
        dieoffset: 0x951f0cd from /usr/lib/debug/lib/modules/4.18.0-107.el8.x86_64/vmlinux
        function: arch_static_branch at ./arch/x86/include/asm/jump_label.h:36:2 inlined by netif_receive_skb_internal at net/core/dev.c:5038:6 inlined by netif_receive_skb_internal at net/core/dev.c:5029:12
        source: 	try { length = $skb->len } catch { }
                	               ^

Pass 2: analyzed script: 5 probes, 12 functions, 0 embeds, 3 globals using 635972virt/309060res/11048shr/297708data kb, in 1640usr/140sys/1789real ms.
Pass 2: analysis failed.  [man error::pass2]

===


Version-Release number of selected component (if applicable):


How reproducible:
always


Steps to Reproduce:
1. have prepared script (see attachment)
2. run it

Actual results:
semantic error


Additional info:
used systemtap version: version 4.1/0.176