BUG: Bad page state in process #865
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My usual rule of thumb says that seemingly random crashes in MM code are often due to a power supply fault. Is your Pi2 adequately powered? Are the USB devices externally powered? Start your use case then after a while run If the crashes are more systematic then I would begin to suspect one of the drivers. |
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The PSU has nice rapi logo on it, and identifies itself as USB wise, I have two self powered hubs connected to it. I've run vcgencmd get_throttled a few times and always get 0x0 back. It's running at 600 MHz, using the powersave controller. |
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So it's not power then - thanks, I had to ask. Looking more closely at the log you can see that it appears to be corruption of a contiguous set of This is interesting because If it happens again then report back, but until then we don't have enough to go on. |
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Will do. I've run this box for 2+ years and all but the initial few months using own compiled kernels (gentoo). I've never seen this exact error, but other kernel crashes has been there. As a tidbit, when I moved to gcc5 (userspace and kernel) I got the perception that I got more segfaults (userspace), and kernel memory stuff such as unaligned accesses in kernelspace and what not. Got me thinking that gcc5@gentoo was not stable for arm. Now I'm back to all gcc4, and those errors are gone (user and kernel space). I'm inclined to move userspace to gcc5 in a few months to see what happens. I see you use crosstool gcc 4.x. Any reason you're not on gcc5 yet? |
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Another question I should have asked earlier - are you overclocked? Toolchain changes can reveal different silicon-specific timing issues when running the chip at out-of-spec clock speeds. I'll let @popcornmix answer the gcc5 question. |
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gcc 4.9 has been used to match the version debian jessie uses. |
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Hi, I'm not overclocked. config.txt says: dtdebug=on cpupower frequency-info: If I get more memory related errors I'll look into changing the psu. As for now, the kevent errors are the most common source of lockups. |
I would advise against spending money on a new PSU - based on what you've said so far it now seems unlikely to be a power problem. However, transient power glitches may go unnoticed by the firmware, so we can't rule it out. If you get a similar crash again, one option would be to patch the "Bad page state" error code to print a hex dump of a larger window around the offending |
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Thanks. I'll keep that in mind. |
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Another weird kernel error which might be related. [58483.819723] Unable to handle kernel paging request at virtual address f5613015 |
JamesH65
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Close within 30 days
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Closing due to lack of activity. Please request to be reopened if you feel this issue is still relevant. |
While streaming TV from tvheadend, I was greeted with this bug. This is on foundation provided 4.9.45 kernel. Never seen this before (on my self-compiled kernels)
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