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Differential D57043

nullfs: do not allow to mount a vnode over itself
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Authored by kib on May 17 2026, 8:10 AM.
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rG7bdf2b5d5fba: nullfs: do not allow to mount a vnode over itself
Summary
This causes recursion in VFS that is not worth handling.

PR:     275570
Reported by:    Alex S <iwtcex@gmail.com>
Tested by:      pho

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rG FreeBSD src repository
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kib created this revision.May 17 2026, 8:10 AM
Herald added a subscriber: imp. · View Herald TranscriptMay 17 2026, 8:10 AM
kib requested review of this revision.May 17 2026, 8:10 AM
kib added a subscriber: pho.
markj accepted this revision.May 17 2026, 7:41 PM
This revision is now accepted and ready to land.May 17 2026, 7:41 PM
Closed by commit rG7bdf2b5d5fba: nullfs: do not allow to mount a vnode over itself (authored by kib). · Explain WhyMay 17 2026, 7:45 PM
This revision was automatically updated to reflect the committed changes.
kib added a commit: rG7bdf2b5d5fba: nullfs: do not allow to mount a vnode over itself.

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sys/
fs/
nullfs/
8 lines

Diff 177981

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sys/fs/nullfs/null_vfsops.c

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