ps hang in 241-pre10

[John Sheahan]

Hi
my box has been running 2.4.1-pre10 for three days.
This morning I noticed odd behavioue - ps and top wouuld freeze 
with no output.

running strace on 'ps'
open("/proc/669/environ", O_RDONLY) = 7
read(7, "INIT_VERSION=sysvinit-2.78\0previ"..., 2047) = 254
close(7)= 0
stat("/proc/683", {st_mode=S_IFDIR|0555, st_size=0, ...}) = 0
open("/proc/683/stat", O_RDONLY)= 7
read(7, 
 --- and things just stop in that window--

I cannot read from /proc/683/
process 683 does not show up in /var/log/messages. How to I find 
what it is?
Any suggestions on how to debug?

Kernel 2.4.1-pre10 on a 2-processor i686
the box has run various 240-test for no unusual issues.
john
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Re: ps hang in 241-pre10

[John Sheahan]

I have not compiled or used reiserfs here yet.
compiling Mikes semaphore debug patch now and adding sysrq
- but this took three days to happen just once here.
..john


Shawn Starr wrote:
> 
> Yes, I have ReiserFS as well...hrm...
>
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