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ARM: OMAP2+: PRCM cleanups for 3.18 merge window

Tony Lindgren linux-arm-kernel linux-omap 1 version New

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Cover letter [PATCH 00/26] ARM: OMAP2+: PRCM cleanups for 3.18 merge window
Quoted 39 lines · Felipe Balbi
Quoted 38 lines · Felipe Balbi
Quoted 9 lines · Tony Lindgren
Quoted 8 lines · Felipe Balbi
Quoted 7 lines · Tony Lindgren

Hmm here seems to be a link to similar issues from 2011:

http://e2e.ti.com/support/arm/sitara_arm/f/791/p/113593/628790.aspx

Looks like the issue can be potentially reproduced with:

Quoted 7 lines
Quoted 4 lines
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# cyclictest -l100000000 -m -a0 -t1 -n -p99 -i200 -h200 -q

running here on am335x and am437x. On that same post, on person mentions he reproduced on beagle bone.

OK I'll run it here too on my am37xx evm. Looks like Stanley was running both cyclictest and hackbench the same time.

yeah I did that.

BTW, just got the following on BBB, AM437x SK is still running.

[ 3952.432262] Kernel panic - not syncing: Attempted to kill the idle task!752763
[ 3952.442403] CPU: 0 PID: 0 Comm: hackbench Not tainted 3.17.0-rc6-00456-gd8da063 #222
[ 3952.450517] [<c0017338>] (unwind_backtrace) from [<c0012fdc>] (show_stack+0x20/0x24)
[ 3952.458620] [<c0012fdc>] (show_stack) from [<c0647f0c>] (dump_stack+0x8c/0xa4)
[ 3952.466168] [<c0647f0c>] (dump_stack) from [<c0644da4>] (panic+0xa4/0x224)
[ 3952.473358] [<c0644da4>] (panic) from [<c004b510>] (do_exit+0x924/0x9d8)
[ 3952.480358] [<c004b510>] (do_exit) from [<c004c4d8>] (do_group_exit+0x50/0xc0)
[ 3952.487903] [<c004c4d8>] (do_group_exit) from [<c004c568>] (__wake_up_parent+0x0/0x30)
[ 3952.496179] [<c004c568>] (__wake_up_parent) from [<c000ed40>] (ret_fast_syscall+0x0/0x48)
[ 3952.504875] drm_kms_helper: panic occurred, switching back to text console
[ 3952.517844] ---[ end Kernel panic - not syncing: Attempted to kill the idle task!
Quoted 2 lines

And I'll also queue the following patch during the -rc cycle to avoid apps segfaulting occasionally at random on omap3.

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and maybe this will fix BBB :-) I'll add that locally. If I survive until tomorrow, I'll add a Tested-by.

BBB died again with the same behavior as above, but I think it's unrelated to this errata. Therefore:

Tested-by Felipe Balbi <[email protected]>

BTW, I have revision r3p2:

CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c5387d

And it still seems to need 430973.

Looks like my 37xx evm produced no errors overnight running cyclictest and hackbench the same time.

Regards,

Tony

Read the cover letter in its thread