Since we only have one more SRU update for Maverick scheduled at this
point, I am marking this as won't fix.
** Changed in: linux-ti-omap4 (Ubuntu Maverick)
Status: In Progress = Won't Fix
** Changed in: linux-ti-omap4 (Ubuntu)
Status: In Progress = Fix Released
** Changed in:
Is this bug going to get fixed for Maverick? I tested the kernel at
http://people.canonical.com/~ppisati/lp707003/linux-
image-2.6.35-903-omap4_2.6.35-903.22_armel.deb and it works fine.
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The attachment 0001-oprofile-Fix-the-hang-while-taking-the-cpu-
offline.patch of this bug report has been identified as being a patch.
The ubuntu-reviewers team has been subscribed to the bug report so that
they can review the patch. In the event that this is in fact not a
patch you can resolve
** Changed in: linux-ti-omap4 (Ubuntu Natty)
Status: In Progress = Fix Released
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https://bugs.launchpad.net/bugs/707003
Title:
Kernel panic when trying to offline CPU1
--
** Changed in: linux-ti-omap4 (Ubuntu Maverick)
Status: New = In Progress
** Changed in: linux-ti-omap4 (Ubuntu Maverick)
Assignee: (unassigned) = Paolo Pisati (p-pisati)
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Both putting cpu offline and putting it back to online works on my Panda
board with latest 1208.12 natty kernel.
http://pastebin.ubuntu.com/599657/
** Changed in: linux-ti-omap4 (Ubuntu)
Milestone: None = maverick-updates
** Changed in: linux-ti-omap4 (Ubuntu)
Importance: Undecided =
** Also affects: linux-ti-omap4 (Ubuntu Maverick)
Importance: Undecided
Status: New
** Also affects: linux-ti-omap4 (Ubuntu Natty)
Importance: Medium
Assignee: Paolo Pisati (p-pisati)
Status: In Progress
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reverting 587ba4e34d53149ca9bf4c53265ab6fe7e203b46 fixes the panic (see
attached patch).
http://people.canonical.com/~ppisati/lp707003/linux-
image-2.6.35-903-omap4_2.6.35-903.22_armel.deb
this is a maverick/ti-omap4 kernel (with the two patches mentioned in
this thread applied) that fixes this
@Tobin: the attached patch fix the terminal hangs in maverick/ti-omap4,
but unfortunately when i try to put the cpu back online i get:
1) a solid hang with no output on console
2) a garbled console interwound with a panic message
from what i could gather from 2, it seems it's the same issue
Oh, weird. I can reproduce it on 2.6.38-rc2 kernel:
http://pastebin.ubuntu.com/558885/
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https://bugs.launchpad.net/bugs/707003
Title:
Kernel panic when trying to offline CPU1
--
Philipp:
Did you see this message in you dmesg:
[ 6634.133392] CPU1: Unknown IPI message 0x1
-Bryan
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https://bugs.launchpad.net/bugs/707003
Title:
Kernel panic when trying to offline
I do not see the Unknown IPI message line. The panic occurs a while after
shutting down CPU1, not when trying to boot it again.
I had enough time to get the dmesg via ssh. The full log is attached.
** Attachment added: full dmesg log
I can not reproduce this on the current natty kernel (2.6.35-1101.4).
On maverick with the latest updated kernel (2.6.35-903.21) running this
command shuts down the cpu with no dmesg error, however the system
doesn't return to a shell prompt. Opening a new terminal and running
with 1 reenables
Just tested and this bug doesn't happen with current Natty's kernel.
linux-image-2.6.35-1101-omap4 2.6.35-1101.4
root@panda-natty:~# echo 0 | sudo tee /sys/devices/system/cpu/cpu1/online
0
root@panda-natty:~# dmesg
[ 1926.179595] CPU1: shutdown
root@panda-natty:~# echo 1 | sudo tee
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