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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<alza>
I wrote a probe provider: http://pastebin.com/ajdA7UEc, but stap still thinks the second parameter 'char * a2' has type long
<alza>
what's wrong?
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<irker197>
systemtap: dsmith systemtap.git:refs/heads/master * release-3.0-107-gbc6b3bb / tapset/linux/syscalls.stp: Make syscall.kexec_load and syscall.kexec_load.return optional. http://tinyurl.com/zcfqyz9
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<eck>
i'm trying to understand the "build-id mismatch" error which i'm getting for libc which I compiled with systemtap markers... I see the NT_GNU_BUILD_ID in my libc.so which matches one of the bytes in the error message, but i don't understand what stap is trying to compare it against
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<eck>
IOW i get an error messsage that contains the string "ERROR: Build-id mismatch ... byte 0 (0x4d vs 0x2b)" and my libc.so has NT_GNU_BUILD_ID starting with 0x4d, what is the thing that has NT_GNU_BUILD_ID starting with 0x2b?
<mjw>
eck, either the build-id of the libc.so.debug file or the one in memory
<mjw>
I would have to double check the error message to be sure
<eck>
ok i'll look at that, thanks
<mjw>
The error message "Build-id mismatch [man error::buildid]: ..." comes from runtime/sym.c
<mjw>
btw. that man error::buildid might have a clue
<mjw>
wow, that is a big man page
<mjw>
It doesn't really explain how to check the mismatch though
<mjw>
eck, It might be caused by long running processes. Where the process has mapped in a libc.so that is older than the one on disk.