Red Hat Bugzilla – Bug 1257938
devname not known for vfs_read/write probes on ppc64
Last modified: 2017-08-02 02:47:02 EDT
This seems like kernel/systemtap. It seems to work OK on other architectures. I think the vfs.write probe should also work on ppc64, reassigning to systemtap. Please reassign if it is kernel.
The code causing the problem:
# diskdevstat 1 10 0
It seems vfs.read/write probes doesn't know devname on ppc64. Attaching stripped down reproducer.
Created attachment 1180124 [details]
This apparent debuginfo problem can only clumsily be worked around with tapset-level workarounds like the .statement probe. We don't have facilities to reliably avoid having to hard-code line numbers like that.