LinuxKPI: sysfs: use a sysctl_ctx_list
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Authored by bz on May 4 2025, 10:08 PM.

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Subscribers

emaste

imp

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Group Reviewers

linuxkpi

Summary

While sysctl_remove_oid() may recusrively try to delete all
sysctl nodes, if one is still referenced it may panic (bd3cdc3105aae).
Use a sysctl_ctx_list to nicely group them all together
and also to release them -- at beast -- with a leak.

Sponsored by: The FreeBSD Foundation
MFC after: 3 days

Test Plan

Just putting this out. Still not sure it's the best idea and
fully correct. Done while debugging some other crashes.

Diff Detail

Repository

rG FreeBSD src repository

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Lint Passed

Unit

No Test Coverage

Build Status

Buildable 63879
Build 60763: arc lint + arc unit

Event Timeline

bz created this revision.May 4 2025, 10:08 PM

Herald added subscribers: emaste, imp. · View Herald TranscriptMay 4 2025, 10:08 PM

bz requested review of this revision.May 4 2025, 10:08 PM

Harbormaster completed remote builds in B63879: Diff 154811.May 4 2025, 10:08 PM

Revision Contents
Changeset List

Path

Size

sys/

compat/

linuxkpi/

common/

include/

linux/

kobject.h

1 line

sysfs.h

48 lines

Diff 154811

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sys/compat/linuxkpi/common/include/linux/kobject.h