Messages in this thread | | | From | (H. Peter Anvin) | Subject | Re: autofs bug report | Date | 19 Sep 1998 08:12:39 GMT |
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Followup to: <36033A20.B6F16A3C@geocities.com> By author: Slava <slava_pestov@geocities.com> In newsgroup: linux.dev.kernel > > There is a bug in autofs 3.1.1 with linux 2.1.122. If you manually > mount a filesystem onto it's mount point as specified in the > automount map, it hangs. >
This is really a case of "don't do that, then"; this means someone with root privileges has done something fundamentally stupid. And yes, it does cause deadlock. I don't really consider this a bug; a wart, perhaps, and not one worth spending a lot of time on.
> For example, if I have this in my > /etc/auto.vol: floppy -fstype=vfat,user :/dev/fd0 And do a mount > /dev/fd0 /vol/floppy, I get this in my process list: 100 0 483 481 > 15 0 852 288 down_failed D ? 0:00 mount -- this is the mount > spawned by automount. 100 0 480 76 9 0 856 292 end S 1 0:00 mount > -- this is the manually spawned mount. What is probably happening > is the first mount is locking /dev/fd0, and the second attempts to > access it. It waits for the first one, which won't exit until the > second one is done.
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