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    SubjectRe: clone() <-> getpid() bug in 2.6?
    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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