https://bugzilla.mindrot.org/show_bug.cgi?id=2658
Bug ID: 2658
Summary: Make integrity tests more robust against timeouts
Product: Portable OpenSSH
Version: 7.4p1
Hardware: Other
OS: Linux
Status: NEW
Severity: enhancement
Priority: P5
Component: Regression tests
Assignee: [email protected]
Reporter: [email protected]
Created attachment 2924
--> https://bugzilla.mindrot.org/attachment.cgi?id=2924&action=edit
Make integrity tests more robust against timeouts
If the first test in a series for a given MAC happens to modify the low
bytes of a packet length, then ssh will time out and this will be
interpreted as a test failure. I'm seeing this in practice on Ubuntu
ppc64el (e.g.
https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-zesty/zesty/ppc64el/o/openssh/20161231_121729_ebc8a@/log.gz).
Fortunately there was already an XXX comment indicating what might be
going wrong here, and although I haven't been able to reproduce it
directly on a system where I can experiment interactively, I can at
least reproduce it by fiddling with the start offset, which was enough
to be able to put together a patch to make the tests more robust. That
patch is attached.
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