Bug 1734097
| Summary: | semantic error: failed to retrieve location attribute for 'skb' | ||||||
|---|---|---|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 8 | Reporter: | Martin Coufal <mcoufal> | ||||
| Component: | systemtap | Assignee: | Frank Ch. Eigler <fche> | ||||
| systemtap sub component: | system-version | QA Contact: | qe-baseos-tools-bugs | ||||
| Status: | CLOSED CURRENTRELEASE | Docs Contact: | |||||
| Severity: | unspecified | ||||||
| Priority: | unspecified | CC: | lberk, mcermak, mjw, vkadlcik | ||||
| Version: | 8.1 | Keywords: | Triaged | ||||
| Target Milestone: | rc | ||||||
| Target Release: | 8.1 | ||||||
| Hardware: | Unspecified | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2020-04-22 12:18:19 UTC | Type: | Bug | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Embargoed: | |||||||
| Bug Depends On: | 1709831, 1785287 | ||||||
| Bug Blocks: | |||||||
| Attachments: |
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chances are this is a dupe of bug #1709831 This appears to work with kernel > 4.18.0-172, so expecting its kbuild -fvar-tracking* fixes corrected this. Will probably CLOSED/CURRENTRELEASE after 8.2's release. Yup, seems to work with kernel-4.18.0-190.el8 and systemtap-4.2-6.el8. will CLOSED/CURRENTRELEASE after 8.2 is released verified with rhel 8.2 binaries |
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