Page MenuHomeFreeBSD
Differential D32075

sdhci: Fix crash caused by M_WAITOK in sdhci dumps
ClosedPublic
Actions

Authored by bag_semihalf.com on Sep 23 2021, 8:38 AM.
Tags
None
Referenced Files
Unknown Object (File)
Wed, Sep 18, 5:49 AM
Unknown Object (File)
Wed, Sep 18, 1:34 AM
Unknown Object (File)
Tue, Sep 17, 1:36 AM
Unknown Object (File)
Mon, Sep 16, 10:06 AM
Unknown Object (File)
Sep 3 2024, 1:01 AM
Unknown Object (File)
Aug 18 2024, 7:59 AM
Unknown Object (File)
Aug 5 2024, 7:40 AM
Unknown Object (File)
Jul 27 2024, 2:57 AM
View All 37 Files
Subscribers
dgr_semihalf.com
imp
kd

Details

Reviewers
mjg
manu
mw
wma
Commits
rG3ac5012e52ee: sdhci: Fix crash caused by M_WAITOK in sdhci dumps
Summary

In some contexts it is illegal to wait for memory allocation, causing
kernel panic. By default sbuf_new passes M_WAITOK to malloc,
which caused crashes when sdhci_dumpcaps or sdhci_dumpregs was callend in
non sutiable context.

Add SBUF_NOWAIT flag to sbuf_new to fix this.

Diff Detail

Repository
rG FreeBSD src repository
Lint
Lint Not Applicable
Unit
Tests Not Applicable

Event Timeline

bag_semihalf.com requested review of this revision.Sep 23 2021, 8:38 AM
bag_semihalf.com created this revision.
This revision was not accepted when it landed; it landed in state Needs Review.Oct 5 2021, 4:24 AM
Closed by commit rG3ac5012e52ee: sdhci: Fix crash caused by M_WAITOK in sdhci dumps (authored by bag_semihalf.com, committed by wma). · Explain Why
This revision was automatically updated to reflect the committed changes.
wma added a commit: rG3ac5012e52ee: sdhci: Fix crash caused by M_WAITOK in sdhci dumps.
Herald added a subscriber: imp. · View Herald TranscriptOct 5 2021, 4:24 AM

Revision Contents
Changeset List

PathSize
sys/
dev/
sdhci/
12 lines

Diff 96257

View Options

sys/dev/sdhci/sdhci.c

Loading...