Bug 9279

Summary:	[SUPERH / PATA / SCSI] Unable to do start userland after kernel boot
Product:	Platform Specific/Hardware	Reporter:	Rafael J. Wysocki (rjwysocki)
Component:	Other	Assignee:	Paul Mundt (lethal)
Status:	CLOSED PATCH_ALREADY_AVAILABLE
Severity:	normal	CC:	lethal
Priority:	P1
Hardware:	All
OS:	Linux
Kernel Version:	2.6.23-gbc53c3a1	Subsystem:
Regression:	Yes	Bisected commit-id:
Bug Depends on:
Bug Blocks:	9243

Description Rafael J. Wysocki 2007-11-02 08:08:42 UTC

Subject         : [SUPERH / PATA / SCSI] Unable to do start userland after kernel boot
Submitter       : Kristoffer Ericson <kristoffer.ericson@gmail.com>
References      : http://lkml.org/lkml/2007/10/25/337
Handled-By      : Paul Mundt <lethal@linux-sh.org>

Comment 1 Rafael J. Wysocki 2007-11-02 08:10:34 UTC

Caused by:

commit 023ef184fff6ac2e7cba345708f35536a2a419cb
Author: Stuart Menefy <stuart.menefy@st.com>
Commit: Paul Mundt <lethal@linux-sh.org>

    sh: __copy_user() optimizations for small copies.

http://git.kernel.org/gitweb.cgi?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=023ef184fff6ac2e7cba345708f35536a2a419cb

Comment 2 Paul Mundt 2007-11-04 00:00:16 UTC

Fix already merged in mainline:

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=0e670685e4925930000a678c74eb1cbf23b415fa;hp=c81134b58c0857122cce23b29d41788e02a5024d

More information in this thread:

http://marc.info/?t=119391358700001&r=1&w=2

Confirmed fixed by Kristoffer in the same thread.