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Differential D51145

md: Restore guards in mddestroy()
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Authored by markj on Jul 3 2025, 1:13 PM.
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kib
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rG5ae9f8e9ac5e: md: Restore guards in mddestroy()
Summary

mddestroy() may be invoked on a partially constructed md device.
Restore the guards that handled this prior to commit e91022168101.

Reported by: syzbot+a0ff73f664de8757cfaa@syzkaller.appspotmail.com
Reported by: syzbot+7b4a4824bf81548283ab@syzkaller.appspotmail.com
Fixes: e91022168101 ("md(4): move type-specific data under union")

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rG FreeBSD src repository
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sys/
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md/
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sys/dev/md/md.c

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