Robert Watson wrote: > > On Mon, 3 Apr 2006, Ganbold wrote: > >> I've got page fault on today's CURRENT. > > After looking at tcp_usr_accept(), I certainly see *a* bug, which > might be the one you've run into. I've committed what I believe is > the fix as tcp_usrreq.c:1.134. Could you pull that down and see if > life gets better? > > Basically, there was erroneous handling of a connection that has been > disconnected while sitting in the accept queue before the application > manages to call accept() on it (indeed, a race). It looks like not crashing anymore with new tcp_usrreq code. thanks a lot, Ganbold > > Robert N M Watson > >> >> Fatal trap 12: page fault while in kernel mode >> fault virtual address = 0xa0 >> fault code = supervisor write, >> page not present >> instructon pointer = 0x20: 0xc062bbde >> stack pointer = 0x28: 0xcc8efc10 >> frame pointer = 0x28: 0xcc8efc2c >> code segment = base 0x0, limit 0xfffff, >> type 0x1b >> =DPL 0, pres 1, >> def32 1, gran 1 >> processor eflags = interrupt enabled, resume, >> IOPL = 0 >> current process = 435 (smbd) >> [thread pid 435 tid 100039] >> stopped at tcp_usr_accept+0xd6: cmpxchgl %ecx, 0xa0(%ebx) >> >> I'm running samba (samba-3.0.21b,1) on this test machine and there is >> no load. >> >> FreeBSD gw.micom.mng.net 7.0-CURRENT FreeBSD 7.0-CURRENT #16: Mon >> Apr 3 14:15:48 ULAST 2006 >> tsgan_at_gw.micom.mng.net:/usr/obj/usr/src/sys/GW i386 >> >> Ganbold >> >> >> > _______________________________________________ > freebsd-current_at_freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to > "freebsd-current-unsubscribe_at_freebsd.org" > > >Received on Tue Apr 04 2006 - 06:39:48 UTC
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