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security_AltSyscall failed consecutively on elm on consecutive days |
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Issue descriptionHi, I observed security_AltSyscall in bvt-cq failed on elm on 11/13 and 11/14. Last green test was on 11/09. The reason was "Allowed system calls failed". Here is the link to go/stainless: https://stainless.corp.google.com/search?exclude_cts=true&exclude_non_release=true&board=%5Eelm%24&test=%5Esecurity%5C_&suite=%5Ebvt%5C-cq%24&view=matrix&col=build&row=test&first_date=2018-11-08&last_date=2018-11-14
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Nov 16
This isn't my code, but not sure if there is anyone else better suited to take a look than me -- considering the people most familiar with alt-syscall are gone or on leave. I have an elm device sitting on my desk so I'll try to repro locally and do some debugging.
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Nov 16
yunlian@: is this possibly related to https://chromium-review.googlesource.com/c/chromiumos/third_party/kernel/+/1296815?
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Nov 16
CL 1296815 was for kernel 4.414. It probably needs to be ported to older kernels (elm uses 3.18 IIRC).
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Nov 16
Yunlian has a few patches for 3.14 and 3.18. Let me submit them.
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Nov 19
Should be fixed after porting the patches to 3.18 and 3.14. Stainless seems to be green now. |
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Comment 1 by lhchavez@chromium.org
, Nov 14