On 06/18/2014 09:22 AM, Kevin Hilman wrote:
On Tue, Jun 17, 2014 at 8:26 PM, Tushar Behera trblinux@gmail.com wrote:
On 06/17/2014 10:23 PM, Kevin Hilman wrote:
Sachin,
On Mon, Jun 16, 2014 at 11:16 PM, Kevin's boot bot khilman@linaro.org wrote:
Tree/Branch: mainline Git describe: v3.16-rc1-2-gebe0618 Failed boot tests (console logs at the end) =========================================== exynos5420-arndale-octa: FAIL: arm-exynos_defconfig ste-snowball: FAIL: arm-u8500_defconfig
FYI... these failures are getting more consistent on my octa board, but still not failing every time.
Kevin
Hi Kevin,
Same here.
Observation: If you soft-reset the board (through the jumpers) after getting this problem, the problem keeps repeating. But if you hard-reset the board (by removing the power cord), the problem doesn't occur during next iteration.
I don't ever use the soft-reset, I only toggle the wall power. I don't ever actually remove the power cord though, I'm using a USB-controlled relay to toggle the wall power.
Kevin
Laura,
We are getting following kernel panic [1] (not always, but quite regularly) while booting Arndale-Octa (based on Samsung's Exynos5420) board with upstream kernel. I haven't observed this issue with other boards yet.
This issue is observed when I am booting with uImage + dtb (within roughly ~10 iterations).
There is no issue when I am booting appended zImage (zImage+dtb). I tried running it over 200 cycles, but without any failure.
'git bisect' points to this commit. commit 1c2f87c22566 "ARM: 8025/1: Get rid of meminfo"
Reverting this commit on top of v3.16-rc1-17-ge99cfa2, I tested for around 100 iterations of booting with uImage+dtb, without any failure.
[1] Kernel log Unhandled fault: external abort on non-linefetch (0x008) at 0xffc00000 Internal error: : 8 [#1] PREEMPT SMP ARM Modules linked in: CPU: 0 PID: 1136 Comm: kworker/u16:0 Not tainted 3.15.0-rc1-00027-g1c8c3cf-dirty #5 task: ed0f5800 ti: eda52000 task.ti: eda52000 PC is at __copy_to_user_std+0x4c/0x3a8 LR is at copy_page_to_iter+0xb0/0x26c pc : [<c01b858c>] lr : [<c00982c0>] psr: 60000113 sp : eda53de4 ip : 00000000 fp : ee103040 r10: ed9fb700 r9 : 00000080 r8 : eda53eb8 r7 : ffc00000 r6 : 00000000 r5 : 00000080 r4 : eda53e78 r3 : 00000000 r2 : 00000000 r1 : ffc00000 r0 : ed9fb700 Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel Control: 10c5387d Table: 2000406a DAC: 00000015 Process kworker/u16:0 (pid: 1136, stack limit = 0xeda52240)