Arch Linux

regder

Member

Registered: 2013-06-16

Posts: 42

Server randomly crashing "BUG: unable to handle kernel paging request"

Server will randomly crash without any consistency. No clue how to diagnose this further than this. These are the relevant log lines

Sep 20 13:57:19 bunga kernel: BUG: unable to handle kernel paging request at ffff880e6411f000
Sep 20 13:57:19 bunga kernel: IP: [<ffffffff8158b7f5>] _raw_spin_lock+0x15/0x40
-- Reboot -- 

Appreciate any help

regder

Member

Registered: 2013-06-16

Posts: 42

Re: Server randomly crashing "BUG: unable to handle kernel paging request"

Just crashed again with a slightly different error

Sep 20 14:28:21 bunga kernel: BUG: unable to handle kernel NULL pointer dereference at 0000000000000223
Sep 20 14:28:21 bunga kernel: IP: [<ffffffff811c3132>] kmem_cache_alloc+0x72/0x230

Last edited by regder (2015-09-20 18:37:03)

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 19,822

Re: Server randomly crashing "BUG: unable to handle kernel paging request"

Intel processor?  Are your microcode updates installed and configured?

Last edited by ewaller (2015-09-21 02:33:18)

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regder

Member

Registered: 2013-06-16

Posts: 42

Re: Server randomly crashing "BUG: unable to handle kernel paging request"

Intel processor?  Are your microcode updates installed and configured?

Yup, Intel Celeron. Didn't know about microcode updates, updated microcode. Will monitor if issue is resolved

Thank you

regder

Member

Registered: 2013-06-16

Posts: 42

Re: Server randomly crashing "BUG: unable to handle kernel paging request"

Unfortunately microcode did not fix it. Crashed last night

Sep 21 00:42:39 bunga kernel: BUG: unable to handle kernel paging request at ffff880e4e1779c0
Sep 21 00:42:39 bunga kernel: IP: [<ffffffff8158b7f5>] _raw_spin_lock+0x15/0x40
Sep 21 00:42:39 bunga kernel: PGD 1b2f067 PUD 0 
Sep 21 00:42:39 bunga kernel: Oops: 0002 [#1] PREEMPT SMP 
Sep 21 00:42:39 bunga kernel: Modules linked in: rfcomm iptable_filter hwmon_vid ath3k arc4 btusb btbcm snd_hda_codec_hdmi btintel iTCO_wdt bluetooth iTCO_vendor_support ath9k ath9k
Sep 21 00:42:39 bunga kernel:  ext4 crc16 mbcache jbd2 hid_generic usbhid hid sd_mod uas usb_storage ahci libahci libata scsi_mod sdhci_acpi sdhci led_class mmc_core xhci_pci xhci_h

regder

Member

Registered: 2013-06-16

Posts: 42

Re: Server randomly crashing "BUG: unable to handle kernel paging request"

Looks like the problem is related to Netatalk. Disabled Netatalk and I've been fine for a week. Any ideas why that would cause it to crash?

Would like to have Netatalk for TimeMachine backups

mich41

Member

Registered: 2012-06-22

Posts: 796

Re: Server randomly crashing "BUG: unable to handle kernel paging request"

This is either hardware failure or kernel bug. Try different kernel versions, run memcheck and prime95, check CPU temperature.

If by any chance it's a Broadwell Celeron, see the "system freezes" thread which hasn't left the first page of this subforum for weeks.