fche changed the topic of #systemtap to: http://sourceware.org/systemtap; email systemtap@sourceware.org if answers here not timely, conversations may be logged
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<kerneltoast> fche, hello
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<kerneltoast> i hate to interrupt you while you're enjoying the election between two senile old men from the comfort of your canadian home, but i've got testsuite results for you
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<fche> kerneltoast, ok that's good data
<kerneltoast> shippit?
<fche> sure.
<kerneltoast> hooray
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<irker455> systemtap: smakarov systemtap.git:master * release-4.3-120-g016750508 / : PR26811 WIP: adapt to set_fs() removal in linux 5.10+
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<irker455> systemtap: fche systemtap.git:master * release-4.3-121-g9102da049 / translate.cxx: translator: disambiguate runtime errors better
<fche> serhei, that little change should help diagnose further problems like you had with whythefail.stp
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<agentzh> fche: is this a known issue? https://sourceware.org/bugzilla/show_bug.cgi?id=26843
<fche> agentzh, not familiar
<fche> well
<fche> glibc backtracing is not going to work without -d libc.so or --ldd
<agentzh> that one is irelevant.
<agentzh> since the main program already is included.
<agentzh> it works on centos 6 and other distros.
<agentzh> see the end of the PR report.
<fche> so the question is just the file-line part?
<agentzh> there's a comparison.
<agentzh> yes
<agentzh> only seen it on ubuntu 20.
<agentzh> fche: also run into this one: https://sourceware.org/bugzilla/show_bug.cgi?id=26844
<agentzh> according to the code, it indeed appends a newline to each frame, but the buffer only copies the N - 1 bytes.
<agentzh> excluding the last newline.
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<fche> see runtime/stack.c ... I don't see an obvious off-by-one error
<fche> but strings are of fixed size limits so it's possible to exceed them
<agentzh> it's definitely not exceeded.
<agentzh> i tried adding more garbage to the end
<agentzh> and only the last byte got lost.
<agentzh> always
<fche> does the sprint_backtrace() suffer the same truncatin?
<irker455> systemtap: sultan systemtap.git:master * release-4.3-122-g31672c5e8 / runtime/linux/task_finder2.c: PR26846: task_finder2: fix kernel panics by eliminating in_atomic() usage