Messages in this thread | | | Date | Fri, 26 May 2006 23:03:02 -0400 | From | Dave Jones <> | Subject | Re: .17rc5 cfq slab corruption. |
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On Fri, May 26, 2006 at 10:56:23PM -0400, Dave Jones wrote: > On Fri, May 26, 2006 at 05:39:15PM -0400, Dave Jones wrote: > > Was playing with googles new picasa toy, which hammered the disks > > hunting out every image file it could find, when this popped out: > > > > Slab corruption: (Not tainted) start=ffff810012b998c8, len=168 > > Redzone: 0x5a2cf071/0x5a2cf071. > > Last user: [<ffffffff8032c319>](cfq_free_io_context+0x2f/0x74) > > 090: 10 bd 28 1b 00 81 ff ff 6b 6b 6b 6b 6b 6b 6b 6b > > Prev obj: start=ffff810012b99808, len=168 > > Redzone: 0x5a2cf071/0x5a2cf071. > > Last user: [<ffffffff8032c319>](cfq_free_io_context+0x2f/0x74) > > 000: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b > > 010: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b > > Next obj: start=ffff810012b99988, len=168 > > Redzone: 0x5a2cf071/0x5a2cf071. > > Last user: [<ffffffff8032c319>](cfq_free_io_context+0x2f/0x74) > > 000: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b > > 010: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b > > After a reboot, I just hit this again. This time whilst the box was > mostly idle (just picking up some email via fetchmail) > > Slab corruption: (Not tainted) start=ffff81003dcde8c8, len=168 > Redzone: 0x5a2cf071/0x5a2cf071. > Last user: [<ffffffff8032bb5f>](cfq_free_io_context+0x2f/0x74) > 090: d0 1a 65 3b 00 81 ff ff 6b 6b 6b 6b 6b 6b 6b 6b > Prev obj: start=ffff81003dcde808, len=168 > Redzone: 0x170fc2a5/0x170fc2a5. > Last user: [<ffffffff8021ce1c>](cfq_set_request+0x3bb/0x41f) > 000: 00 00 00 00 00 00 00 00 01 00 00 00 5a 5a 5a 5a > 010: 00 00 00 00 00 00 00 00 08 78 44 3c 00 81 ff ff > Next obj: start=ffff81003dcde988, len=168 > Redzone: 0x170fc2a5/0x170fc2a5. > Last user: [<ffffffff8021ce1c>](cfq_set_request+0x3bb/0x41f) > 000: 88 e6 cd 3d 00 81 ff ff 00 00 00 00 5a 5a 5a 5a > 010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > > > What's interesting is the 00 81 ff ff part of the corruption > is there in both cases. Anyone have any clues what this could be?
<sudden realisation> oh, it's high 32 bits of the address, duh. Back to head-scratching.
Dave
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