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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<invano>
hi fche, problem solved. mmap/munmap/mprotect syscalls were not detexcted correctly and __stp_utrace_task_finder_target_syscall_entry was exiting without allowing the to call stapiu_mmap_found for the new vma. was working for ld because after execve struct vma already has ld.so
<invano>
so the problem was stap not detecting dynamic mapping but only able to activate probes on *already mapped* regions
<invano>
I'm going to fix this and prepare a patch. it affects mips
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<fche>
invano, ah neat. maybe just a syscall number mismatch situation
<fche>
very good detective work!!
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<invano>
fche: yeah kind of. macros to distinguish the mips abi don't take in account implicit assumptions of the kernel.
<fche>
aha, that makes sense
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<gromero_>
Hi. Not sure if it's systemtap related, but I'm trying to logrotate a log file produced from a stap output but looks like it can never be truncated, for instance, >log does not work and logrotate as well. Any clue on that?