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Hey list!
So, I am experiencing a bug under Fedora 21 (I think that I also had it under Fedora 20).
A bit of back story: The HDD which is used in this PC was in an older one before. On the older PC I had Fedora 17 installed with LVM as my file system. I had to reinstall my OS after a failed upgrade to Fedora 19. I think that I did not swipe the drive completely and just installed Fedora 20 over the left pieces of what was once my operating system. Now the used file system is ext4. A couple of month later I bought this new PC where I used the old HDD, because why not. When I left my terminal open for a while I could see messages popping up, telling me that there was something wrong with my CPU cache. After some searching I found out that I didn't find out anything. My computer didn't crash when this bug showed up so it didn't bother me.
I tried to upgrade to Fedora 21 a few weeks ago. I tried booting into "System Upgrade" but it would stop after some time telling me that there is a lvm swap partition missing or something. I managed to finish the upgrade without any further problems.
And now SELinux (under F20 there where no warnings by SELinux) is sometimes throwing a warning that says:
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reason: mce: [Hardware Error]: Machine check events logged
cmdline:
BOOT_IMAGE=/vmlinuz-4.1.4-100.fc21.x86_64 root=UUID=5ab84b55-b501-4390-a44b-f840ab4736f7 ro vconsole.font=latarcyrheb-sun16 rd.lvm.lv=vg_user/lv_swap rhgb quiet LANG=de_DE.UTF-8
dmesg(I post just the part where it says things about errors):
[ 11.078336] [Hardware Error]: System Fatal error. [ 11.078339] [Hardware Error]: CPU:0 (15:2:0) MC4_STATUS[Over|UE|-|PCC|-|-|-]: 0xf300000200190127 [ 11.078342] [Hardware Error]: MC4 Error (node 0): Compute Unit Data Error. [ 11.078343] [Hardware Error]: cache level: L3/GEN, tx: DATA, mem-tx: WR [ 11.078345] [Hardware Error]: Deferred error. [ 11.078347] [Hardware Error]: CPU:2 (15:2:0) MC2_STATUS[Over|CE|MiscV|-|-|Deferred|-]: 0xd8001000000c0172 [ 11.078349] [Hardware Error]: MC2 Error: VB Data ECC or parity error. [ 11.078351] [Hardware Error]: cache level: L2, tx: INSN, mem-tx: EV [ 11.078352] [Hardware Error]: Corrected error, no action required. [ 11.078354] [Hardware Error]: CPU:3 (15:2:0) MC2_STATUS[Over|CE|MiscV|-|AddrV|-|-|CECC]: 0xdc05406001040136 [ 11.078357] [Hardware Error]: MC2 Error Address: 0x00000001d7773840 [ 11.078358] [Hardware Error]: MC2 Error: Fill ECC error on data fills . [ 11.078359] [Hardware Error]: cache level: L2, tx: DATA, mem-tx: DRD - ------------------------------------------------------------------------ - --------------------
The error reproduces itself and seems to appear at random.
If you need any additional information just tell me.
Now it does look more and more like a hardware error, but I am highly confused about the missing lvm_swap partition that it is trying to find.
Apart from that Fedora works just fine. (Well, GTK+ seems to cause some trouble, but that problem is for another mail.^^)
Thank you for your help.
- -- Erik G.