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Subject2.2.12 still "attempt to access beyond end of device" (was: Re: EXT2/SCSI problems, NFS/RPC strangeness etc)
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"Stephen C. Tweedie" <sct@redhat.com> writes:

> On Mon, 30 Aug 1999 20:02:56 +0300 (EET DST), Ilpo Ruotsalainen
> <lonewolf@cs.hut.fi> said:
>
> > attempt to access beyond end of device
> > 08:03: rw=0, want=1877816424, limit=6554520
> > dev 08:03 blksize=1024 blocknr=1877816423 sector=-539334450 size=1024
> > count=1
>
> This seems to have been mostly the result of random memory corruption in
> recent kernels. If you can reproduce this in 2.2.12, we definitely want
> to know. One way to check what sort of corruptions may be occurring is
> to copy a large file and "cmp" the two versions. That very clearly
> shows up the exact details of any memory overwrites going on.

Still have this with 2.2.12 on:
Linux pacifica 2.2.12-knfs #1 Tue Aug 31 12:59:08 PDT 1999 i686 unknown
(vanilla 2.2.12 + HJL's knfs patches).

This box is hit by quite heavy NFS traffic. There seem to be no file
corruption (so far).

This is the error patterns (slightly reformatted):
Sep 1 22:22:54: attempt to access beyond end of device
Sep 1 22:22:54: 08:08: rw=0, want=1145390407, limit=16208895
Sep 1 22:22:54: dev 08:08 blksize=1024 blocknr=1145390406
sector=-2004186484 size=1024 count=1
Sep 1 22:22:54: attempt to access beyond end of device
Sep 1 22:22:54: 08:08: rw=0, want=1145390407, limit=16208895
Sep 1 22:22:54: dev 08:08 blksize=1024 blocknr=1145390406
sector=-2004186484 size=1024 count=1
Sep 1 22:22:54: attempt to access beyond end of device
Sep 1 22:22:54: 08:08: rw=0, want=1145390407, limit=16208895
Sep 1 22:22:54: dev 08:08 blksize=1024 blocknr=1145390406
sector=-2004186484 size=1024 count=1
Sep 2 00:08:41: attempt to access beyond end of device
Sep 2 00:08:41: 08:08: rw=0, want=285216913, limit=16208895
Sep 2 00:08:41: dev 08:08 blksize=1024 blocknr=285216912
sector=570433824 size=1024 count=1
Sep 2 00:08:41: attempt to access beyond end of device
Sep 2 00:08:41: 08:08: rw=0, want=285216913, limit=16208895
Sep 2 00:08:41: dev 08:08 blksize=1024 blocknr=285216912
sector=570433824 size=1024 count=1
Sep 2 20:59:22: attempt to access beyond end of device
Sep 2 20:59:22: 08:08: rw=0, want=1668444976, limit=16208895
Sep 2 20:59:22: dev 08:08 blksize=1024 blocknr=1668444975
sector=-958077346 size=1024 count=1
Sep 2 20:59:22: attempt to access beyond end of device
Sep 2 20:59:22: 08:08: rw=0, want=1668444976, limit=16208895
Sep 2 20:59:22: dev 08:08 blksize=1024 blocknr=1668444975
sector=-958077346 size=1024 count=1
Sep 2 20:59:22: attempt to access beyond end of device
Sep 2 20:59:22: 08:08: rw=0, want=1668444976, limit=16208895
Sep 2 20:59:22: dev 08:08 blksize=1024 blocknr=1668444975
sector=-958077346 size=1024 count=1
Sep 2 20:59:33: attempt to access beyond end of device
Sep 2 20:59:33: 08:08: rw=0, want=1668444976, limit=16208895
Sep 2 20:59:33: dev 08:08 blksize=1024 blocknr=1668444975
sector=-958077346 size=1024 count=1
Sep 2 20:59:33: attempt to access beyond end of device
Sep 2 20:59:33: 08:08: rw=0, want=1668444976, limit=16208895
Sep 2 20:59:33: dev 08:08 blksize=1024 blocknr=1668444975
sector=-958077346 size=1024 count=1
Sep 2 22:20:42: attempt to access beyond end of device
Sep 2 22:20:42: 08:08: rw=0, want=691024436, limit=16208895
Sep 2 22:20:42: dev 08:08 blksize=1024 blocknr=691024435
sector=1382048870 size=1024 count=1
Sep 2 22:20:42: attempt to access beyond end of device
Sep 2 22:20:42: 08:08: rw=0, want=691024436, limit=16208895
Sep 2 22:20:42: dev 08:08 blksize=1024 blocknr=691024435
sector=1382048870 size=1024 count=1
Sep 2 22:20:42: attempt to access beyond end of device
Sep 2 22:20:42: 08:08: rw=0, want=691024436, limit=16208895
Sep 2 22:20:42: dev 08:08 blksize=1024 blocknr=691024435
sector=1382048870 size=1024 count=1

This is a pain in the b*** since the read() or write() returns EIO (or
whatever) and the programs fail strangely.

.config available if needed.

Phil.

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