ps hang in 241-pre10

John Sheahan (john@reptechnic.com.au)
Sat, 27 Jan 2001 15:34:26 +1100


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/<anything>
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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