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Differential D51037

makefs: Fix undefined behaviour in ffs.c
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Authored by bnovkov on Jun 25 2025, 9:53 AM.
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Details

Reviewers
emaste
mckusick
Group Reviewers
Klara
Commits
rG06077dc327ea: makefs: Fix undefined behaviour in ffs.c
Summary

Fix a UBSAN-reported error in ffs_make_dirbuf where a zero offset
gets applied to a NULL pointer.

Sponsored by: Klara, Inc.
Sponsored by: The FreeBSD Foundation

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Repository
rG FreeBSD src repository
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Unit
Tests Skipped
Build Status
Buildable 65077
Build 61960: arc lint + arc unit

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PathSize
usr.sbin/
makefs/
2 lines

Diff 157587

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usr.sbin/makefs/ffs.c

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