Messages in this thread | | | Subject | Re: [RFD] Efficient unit test and fuzz tools for kernel/libc porting | From | "Zhangjian (Bamvor)" <> | Date | Thu, 21 Jul 2016 20:39:11 +0800 |
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Hi, Joseph
On 2016/7/20 23:47, Joseph Myers wrote: > On Wed, 6 Jul 2016, Zhangjian (Bamvor) wrote: > >> correct or not. After learn and compare some fuzz tools, I feel that there is >> no such fuzz tools could help me. So, I wrote a new fuzz tools base on the >> trinity and it found several wrapper issues in glibc. I will first explain the >> different with existing fuzz tools and paste my propsosal in the end. > > I'm not at all clear on whether any of the people working on AArch64 ILP32 > glibc have run the glibc testsuite and investigated the results in detail > (the patch submissions have failed to include glibc testsuite results and > have included bugs that would have been detected by the glibc testsuite). I run test glibc testsuite in previous glibc version with v6 kernel patch backport to kernel-4.1, without regression. I usually run glibc testsuite after ltp test result looks good. So, maybe it hard to find a issue by glibc testsuite in this case. > But, if you've found bugs in a new glibc port that were not detected by > the existing testsuite, then tests for those bugs should be contributed to > glibc (even if no existing port has those bugs, improving the test > coverage is still a good idea). It is good idea. I will review the fixed issues(such as wrong context in signal, wrong parameter in off_t/stat relative syscalls) and check if it is suitable to add it to glibc testsuite. (Actually, I do not know which test suite (ltp or glibc) I should improve for a specific issue). I hope our tools could help on improving the coverage of syscall relative code at least.
Thanks.
Bamvor
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