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docs: update syzbot.md

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Add in some information about fix bisection.
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Zubin Mithra 2019-09-03 11:09:04 -07:00 committed by Dmitry Vyukov
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@ -164,7 +164,28 @@ so please treat the results with understanding. You may consult the provided
Suggestions and patches that improve bisection quality for common cases are
[welcome](https://github.com/google/syzkaller/issues/1051).
<div id="bisection"/>
`syzbot` supports cause bisection (find the commit that introduces a bug) and
fix bisection (find the commit that fixes a bug).
The web UI for a specific kernel
(say [upstream linux](https://syzkaller.appspot.com/upstream)) shows the
`Bisected` status for all bugs.
<div id="fix-bisection"/>
### Fix bisection
`syzbot` will perform fix bisection on bugs that meet the following criterion:
- The kernel tree corresponding to the bug has fix bisection enabled (for
instance, fix bisection might be disabled on kernel trees that have commits
which are force pushed).
- The bug must have a reproducer.
- The bug must not have occurred for at least 30 days. If the bug still occurs
on HEAD upon fix bisection, it will be retried in another 30 days.
If you receive an email with fix bisection results you think is correct, please
reply with a `#syz fix: commit-title` so that syzbot can close the bug report.
<div id="syzkaller-reproducers"/>
## syzkaller reproducers