Bug 103711
| Summary: | Null pointer dereference in md raid 5 on get_free_stripe | ||
|---|---|---|---|
| Product: | IO/Storage | Reporter: | e-kernel |
| Component: | MD | Assignee: | io_md |
| Status: | NEW --- | ||
| Severity: | high | CC: | gjunk2, neilb, szg00000 |
| Priority: | P1 | ||
| Hardware: | x86-64 | ||
| OS: | Linux | ||
| Kernel Version: | 4.1.6-1-ARCH | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
| Attachments: |
kernel crash trace
Kernel Log ver_linux output lspci -vvv output /proc/iomem /proc/ioreports /proc/scsi/scsi |
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I have the same problem. Takes quite a while to get this to happen. Typically 1 - 2 weeks of uptime. Best I can tell it crashes when the nightly backups are running and writing to the raid6 array.
Same kernel - 4.1.6 - details attached.
cat /proc/mdstat
Personalities : [raid6] [raid5] [raid4]
md0 : active raid6 sdf1[4] sdc1[1] sdh1[5] sde1[3] sdd1[2] sdb1[0]
11720536064 blocks super 1.2 level 6, 512k chunk, algorithm 2 [6/6] [UUUUUU]
bitmap: 0/22 pages [0KB], 65536KB chunk
unused devices: <none>
Created attachment 186531 [details]
Kernel Log
Created attachment 186541 [details]
ver_linux output
Created attachment 186551 [details]
lspci -vvv output
Created attachment 186561 [details]
/proc/iomem
Created attachment 186571 [details]
/proc/ioreports
Created attachment 186581 [details]
/proc/scsi/scsi
Fix by commit 49895bcc7e566ba455eb2996607d6fbd3447ce16 should get into 4.1-stable eventually. Thanks Neil - assume this is in 4.2 already. |
Created attachment 186171 [details] kernel crash trace My file server just crashed with the attached kernel trace. Running arch linux with kernel 4.1.6. Raid configuration: Personalities : [raid6] [raid5] [raid4] md127 : active raid5 sdd1[2] sdc1[4] sda1[1] sdb1[0] 5860147200 blocks super 1.2 level 5, 512k chunk, algorithm 2 [4/4] [UUUU] bitmap: 0/15 pages [0KB], 65536KB chunk Hardware: 4x2TB hard drives Intel(R) Atom(TM) CPU C2550 @ 2.40GHz 8GB ECC UDIMM