cvs commit: src/sys/kern sys_pipe.c
Poul-Henning Kamp
phk at phk.freebsd.dk
Sun Oct 12 01:52:41 PDT 2003
In message <20031012081323.GL533 at funkthat.com>, John-Mark Gurney writes:
>Poul-Henning Kamp wrote this message on Sun, Oct 12, 2003 at 10:05 +0200:
>> In message <200310120706.h9C763U6085132 at repoman.freebsd.org>, John-Mark Gurney
>> writes:
>> >jmg 2003/10/12 00:06:03 PDT
>> >
>> > FreeBSD src repository
>> >
>> > Modified files:
>> > sys/kern sys_pipe.c
>> > Log:
>> > fix a problem referencing free'd memory. This is only a problem for
>> > kqueue write events on a socket and you regularly create tons of pipes
>> > which overwrites the structure causing a panic when removing the knote
>> > from the list. If the peer has gone away (and it's a write knote), then
>> > don't bother trying to remove the knote from the list.
>>
>> Does this fix make(1) compiled with -DUSE_KQUEUE ?
>
>Hmmm.. After looking at the make source, no, it probably doesn't. The
>bug this fixed was limited to EVFILT_WRITE events being registered on
>pipes, and make(1) doesn't use EVFILT_WRITE.
>
>Do we have a back trace on the problem with make?
Just do a make -j 12 buildworld and your kernel will explode.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
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