Messages in this thread | | | Date | Tue, 08 Jun 2004 20:06:55 +0900 | From | Kalin KOZHUHAROV <> | Subject | Re: clone() <-> getpid() bug in 2.6? |
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Bruce Guenter wrote: > On Mon, Jun 07, 2004 at 11:35:23PM +0000, Linus Torvalds wrote: > >>On Sun, 6 Jun 2004, Kalin KOZHUHAROV wrote: >> >>>Well, not exactly sure about my reply, but let me try. >>> >>>The other day I was debugging some config problems with my qmail instalation and I ended up doing: >>># strace -p 4563 -f -F >>>... >>>[pid 13097] read(3, "\347\374\375TBH~\342\233\337\220\302l\220\317\237\37\25"..., 32) = 32 >>>[pid 13097] close(3) = 0 >>>[pid 13097] getpid() = 13097 >>>[pid 13097] getpid() = 13097 >>>[pid 13097] getuid32() = 89 >>>[pid 13097] getpid() = 13097 >>>[pid 13097] time(NULL) = 1086497450 >>>[pid 13097] getpid() = 13097 >>>[pid 13097] getpid() = 13097 >>>[pid 13097] getpid() = 13097 >> >>qmail is a piece of crap. The source code is completely unreadable, and it >>seems to think that "getpid()" is a good source of random data. Don't ask >>me why. > > > In this case, however, it has nothing directly to do with qmail. This > is tcpserver, and tcpserver only uses getpid for two things: printing > out status lines with the PID in them (which seems perfectly valid to > me), and once when adding to random initializer for DNS requests. > > This strace pattern seemed rather odd to me, so for comparison I straced > my own tcpserver setups, and could not get them to produce more than two > getpid calls per connection. Something is wrong with this trace, > possibly some weirdness in a patch, like whatever the SSL library is > doing.
Yes, it is strange. I'll have a look at the applied patches. Without SSL there is no such getpidding :-) Will post you (not LKML) if I find the culprit.
Kalin.
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