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zaai
Apprentice
Joined: 24 Jul 2004
Posts: 175
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 Posted: Tue Dec 04, 2007 3:22 am Post subject: /tmp/.. renamed to /tmp/-. deletes / on startup |
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On startup my laptop start to delete / 
I wasn't watching the boot process but I noticed after a few minutes something strange was going on since Lappie shut down by itself. Still blissfully unaware I started up again and noticed a kernel panic, could not run Init.  Out comes the LiveCD.
Mounted the root folder no problem. Checked some folders and found /bin and /sbin empty. Ouch!
/tmp was also empty except for something very strange:
.. didn't exist but instead -. showed.
Suspicion surfaced and I ran:
<Code> # find . </Code>
Which recursed back to /
On bootup /tmp is erased, since it contained -. which recursed back to / it started deleting the system..
How on earth did this happen?
How can a .. folder be renamed to -. ?
The applications that ran were mplayer/kplayer, and kmail, under a user that has no root or sudo privileges.
_________________
* most bugs can be reduced to either dependency or state *
Athlon64 X2 4800+ on Asus M2N SLI deluxe with 4GB Dual channel
video nVidia GForce 7300 GS 512MB (snail); xorg-7.2
kernel 2.6.24-gentoo-r3 |
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PaulBredbury
Watchman
Joined: 14 Jul 2005
Posts: 7310
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| Posted: Tue Dec 04, 2007 4:19 am Post subject: |
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Doesn't surprise me, but it is saddening to see such stupid behaviour by bash.
Check out the preserve-root thread for examples of the sort of Linux fanboyism that keeps these sorts of outrageous bugs from being fixed (it's a bug in bash, it sounds like, rather than specifically Gentoo). |
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desultory
Bodhisattva
Joined: 04 Nov 2005
Posts: 9410
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| Posted: Tue Dec 04, 2007 4:24 am Post subject: |
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| Use a known good live CD to check all of the partitions which may have been mounted when the corruption occurred, check those partitions and any swap partitions for bad blocks. |
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zaai
Apprentice
Joined: 24 Jul 2004
Posts: 175
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| Posted: Tue Dec 04, 2007 6:41 pm Post subject: |
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Thanks for the reply.
At first I was concerned whether there was a virus at work. Seems like bash is doing it.
I'm still puzzled as to how the (..) dot-dot name can be renamed to (-.) dash-dot. I'd like to track down the curlpit. Is this a known bash bug?
_________________
* most bugs can be reduced to either dependency or state *
Athlon64 X2 4800+ on Asus M2N SLI deluxe with 4GB Dual channel
video nVidia GForce 7300 GS 512MB (snail); xorg-7.2
kernel 2.6.24-gentoo-r3 |
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