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[Bug bpf/23510] Tapset function println() not supported in the bpf runtime
- From: "me at serhei dot io" <sourceware-bugzilla at sourceware dot org>
- To: systemtap at sourceware dot org
- Date: Fri, 17 Aug 2018 10:15:07 +0000
- Subject: [Bug bpf/23510] Tapset function println() not supported in the bpf runtime
- Auto-submitted: auto-generated
- References: <bug-23510-6586@http.sourceware.org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=23510
Serhei Makarov <me at serhei dot io> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |me at serhei dot io
Resolution|--- |FIXED
Assignee|systemtap at sourceware dot org |me at serhei dot io
--- Comment #1 from Serhei Makarov <me at serhei dot io> ---
println() is now supported in upstream git with the latest string handling
code.
Commit 80b95e4 allowed string literals in other places than printf(), enabling
the already existing visit_print_format implementation to handle print and
println in addition to printf.
Commit 9b58c9b fixes a bug where the println() implementation would fail to
'tag' its format string properly for the transport layer, causing a segfault in
the bpf userspace interpreter when it tried to strip the nonexistent tag.
Related issues are PR23405 (string support), PR21888 (support other logging
functions).
I have personally confirmed the 'hello world' use case to work ;)
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