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Duplicate events for 32-bit compatible syscall probes
- From: Aryeh Weinreb <weinrea at gmail dot com>
- To: systemtap at sourceware dot org
- Date: Wed, 24 Apr 2013 12:47:59 +0300
- Subject: Duplicate events for 32-bit compatible syscall probes
Hi,
While using some syscall.mq_* probes on 32bit on x86_64 I am getting
duplicate events.
Looking into ipc/compat_mq.c it seems that the compat_sys_mq calls are
just wrappers for the sys_mq ones.
Although, sometimes the compat calls can return EFAULT without calling
the non-compat versions.
It would be nice to only get one event for each system call without
missing any calls.
I am using an RHEL 6 build of systemtap version 1.8.
Thanks,
Aryeh