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ktrace: Remove vrele() at the end of ktr_writerequest()
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Authored by markj on May 23 2021, 5:24 PM.

Details

Summary

As of commit fc369a353 we no longer ref the vnode when writing a record.
Drop the corresponding vrele() call in the error case.

Fixes: fc369a353 ("ktrace: fix a race between writes and close")
Reported by: syzbot+9b96ea7a5ff8917d3fe4@syzkaller.appspotmail.com
Reported by: syzbot+6120ebbb354cd52e5107@syzkaller.appspotmail.com
MFC after: 6 days

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rG FreeBSD src repository
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