This behaviour is caused because the kernel gets busy in handling endless amount of page faults.
The problem is in the system call restart mechanism when a system call received signal. The kernel (do_signal() at arch/arm/kernel/signal.c) restarts a system call by adding code at the stack of the process, this works fine for ARMv5, but for v6 and v7 this won’t work because the stack area has the NX bit ( non executable).
This portion of code occurs only if CONFIG_OABI_COMPAT is enabled.
----------------
Maen Suleiman - Embedded Controllers & SoC Line
-----Original Message-----
From: <email address hidden> [mailto:<email address hidden>] On Behalf Of
Lo?c Minier
Sent: Saturday, October 17, 2009 10:55 AM
To: Maen Suleiman
Subject: [Bug 453682] Re: late resume failure on dove
@Maen: OABI_COMPAT is set:
/boot/config-2.6.31-204-dove:CONFIG_OABI_COMPAT=y
/boot/config-2.6.31-206-dove:CONFIG_OABI_COMPAT=y
/boot/config-2.6.31-208-dove:CONFIG_OABI_COMPAT=y
I think this is on purpose for compatibility with older ARM binaries
from Debian. I think we could consider dropping it in the future, but
I'd like to understand why it would interfere with suspend/resume?
--
late resume failure on dove https://bugs.launchpad.net/bugs/453682
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mvl-dove in ubuntu.
Status in “linux-mvl-dove” package in Ubuntu: New
Bug description:
Suspend/resume on dove works, kinda. The system seems to power down into a
low power state. However on resume, the system is left in a nearly
unusable state. Everything slows to a crawl, and all processes seem to be
chewing up, at minimum, 1.6% cpu.
ProblemType: KernelOops
Annotation: This occured during a previous suspend and prevented it from
resuming properly. The resume processing hung very near the end and will
have appeared to have completed normally.
Architecture: armel
Date: Fri Oct 16 23:34:16 2009
DistroRelease: Ubuntu 9.10
ExecutablePath: /usr/share/apport/apportcheckresume
Failure: late resume
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Alpha armel+dove (20091016)
InterpreterPath: /usr/bin/python2.6
Package: linux-image-2.6.31-208-dove 2.6.31-208.16
ProcCmdline: /usr/bin/python /usr/share/apport/apportcheckresume
ProcEnviron: PATH=(custom, no user)
ProcVersionSignature: Ubuntu 2.6.31-208.16-hostname
SourcePackage: linux-mvl-dove
Tags: resume suspend resume-late-hang
Title: late resume failure
Uname: Linux 2.6.31-208-dove armv7l
UserGroups:
This behaviour is caused because the kernel gets busy in handling endless amount of page faults. kernel/ signal. c) restarts a system call by adding code at the stack of the process, this works fine for ARMv5, but for v6 and v7 this won’t work because the stack area has the NX bit ( non executable).
The problem is in the system call restart mechanism when a system call received signal. The kernel (do_signal() at arch/arm/
This portion of code occurs only if CONFIG_OABI_COMPAT is enabled.
----------------
Maen Suleiman - Embedded Controllers & SoC Line
-----Original Message-----
From: <email address hidden> [mailto:<email address hidden>] On Behalf Of
Lo?c Minier
Sent: Saturday, October 17, 2009 10:55 AM
To: Maen Suleiman
Subject: [Bug 453682] Re: late resume failure on dove
@Maen: OABI_COMPAT is set: config- 2.6.31- 204-dove: CONFIG_ OABI_COMPAT= y config- 2.6.31- 206-dove: CONFIG_ OABI_COMPAT= y config- 2.6.31- 208-dove: CONFIG_ OABI_COMPAT= y
/boot/
/boot/
/boot/
I think this is on purpose for compatibility with older ARM binaries
from Debian. I think we could consider dropping it in the future, but
I'd like to understand why it would interfere with suspend/resume?
-- /bugs.launchpad .net/bugs/ 453682
late resume failure on dove
https:/
You received this bug notification because you are subscribed to linux-
mvl-dove in ubuntu.
Status in “linux-mvl-dove” package in Ubuntu: New
Bug description:
Suspend/resume on dove works, kinda. The system seems to power down into a
low power state. However on resume, the system is left in a nearly
unusable state. Everything slows to a crawl, and all processes seem to be
chewing up, at minimum, 1.6% cpu.
ProblemType: KernelOops apport/ apportcheckresu me 2.6.31- 208-dove 2.6.31-208.16 apport/ apportcheckresu me nature: Ubuntu 2.6.31- 208.16- hostname
Annotation: This occured during a previous suspend and prevented it from
resuming properly. The resume processing hung very near the end and will
have appeared to have completed normally.
Architecture: armel
Date: Fri Oct 16 23:34:16 2009
DistroRelease: Ubuntu 9.10
ExecutablePath: /usr/share/
Failure: late resume
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Alpha armel+dove (20091016)
InterpreterPath: /usr/bin/python2.6
Package: linux-image-
ProcCmdline: /usr/bin/python /usr/share/
ProcEnviron: PATH=(custom, no user)
ProcVersionSig
SourcePackage: linux-mvl-dove
Tags: resume suspend resume-late-hang
Title: late resume failure
Uname: Linux 2.6.31-208-dove armv7l
UserGroups: