========================= The Life and Incredible Adventures of One QEMU Bug (Which I Finally Fixed) ========================= A thread [1/n]
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[Nov 7] me: huh, yes, I will take this task and return with a patch. /* Grr. Challenge accepted! A week of development. */ [Nov 14] me: new patch fixing IDE [Nov 21] Mr1: we have unit tests. First you improve them to cover all cases. Do according the IDE specification. [11/n]
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[Nov 27] me: okay, it looks like I can do that https://lists.nongnu.org/archive/html/qemu-devel/2019-11/msg04403.html … /* More work done. I developed a new IDE fix and a shiny unit-test that also found an extra DMA emulation bug */ [Dec 16] me: sent the patch series [12/n]
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[Dec 19] Mr1: No, your unit-test is slow. Make it faster. me: okay, I'll do that... https://lists.nongnu.org/archive/html/qemu-devel/2019-12/msg04442.html … /* More work done. Rrrrr! It must be finished! */ [13/n]
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[Dec 23] me: new fast shiny unit-test and fix https://lists.nongnu.org/archive/html/qemu-devel/2019-12/msg05135.html … [Dec 24] Mr2: I've been out to lunch for a little while. I'll review these series before the end of the year. [Dec 28] me: hello anybody? /* Silence. Happy New Year! No review. LOL!!! */ [14/n]
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Meanwhile my friends at 36C3 recommended to request a CVE to speed up the review process :-) Nice idea! Red Had likes CVEs! So MITRE allocated CVE-2019-20175 for this issue (with a DISPUTED tag). https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-20175 … [15/n]
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[Jan 2] me: Happy New Year everyone! There is a CVE. How about review? /* 5 days passed */ [Jan 7] Mr1: okay, it's fine now. [Jan 8] me: thank you a lot! Let's wait for more reviews. /* 2 weeks passed */ [16/n]
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[Jan 22] me: pinging in the ML again about this fix and unit-test! [Jan 22] Mr1: I asked Mr2. He promised to take a look very soon! [Jan 23] Mr2: merged. https://github.com/jnsnow/qemu/commits/ide … WOW! Really?!! [17/n]
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And now can you guess who created this bug back in 2015? Yes, it was Mr2. LOL! Maybe that is why he was delaying the fix that killed it. That was weird story. Hope you liked it. Happy end! ========================= [n/n]pic.twitter.com/cqqSUDX9aX
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And let me thank Mr1 once again! He is cool! I would not be able to become a QEMU contributor without his help :-) [n+1/n]
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