Messages in this thread | | | From | Etienne Martineau <> | Date | Mon, 30 Aug 2021 10:16:37 -0400 | Subject | Question related to ( commit 9f691549f76d "bpf: fix struct htab_elem layout" ) |
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Hi,
I've been staring at this commit for some time and I wonder what were the symptoms when the issue was reproduced? "The bug was discovered by manual code analysis and reproducible only with explicit udelay() in lookup_elem_raw()."
I tried various stress test + timing combinations in lookup_elem_raw() but no luck.
I believe that one of our production boxes ran into that issue lately with a GPF in the area of htab_map_lookup_elem(). The crash was seen on an outdated 4.9 stable.
Please CC me as I'm not on the list.
thanks in advance, Etienne
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