Date: Mon, 27 Sep 2010 11:24:50 -0700 From: Julian Elischer <julian@freebsd.org> To: Nikos Vassiliadis <nvass9573@gmx.com> Cc: freebsd-virtualization@freebsd.org Subject: Re: VIMAGE + NDIS Message-ID: <4CA0E172.3000102@freebsd.org> In-Reply-To: <4CA0D9A1.8090607@gmx.com> References: <4CA04A35.5030107@gmx.com> <4CA0B8B1.9040304@freebsd.org> <4CA0D9A1.8090607@gmx.com>
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On 9/27/10 10:51 AM, Nikos Vassiliadis wrote: > Julian Elischer wrote: >>> #10 0xc0978200 in rt_dispatch (m=0xc764ad00, sa=0x0) at >>> /usr/src/sys/net/rtsock.c:1374 >>> 1374 if (V_loif) >>> (kgdb) list >>> 1369 } >>> 1370 *(unsigned short *)(tag + 1) = sa->sa_family; >>> 1371 m_tag_prepend(m, tag); >>> 1372 } >>> 1373 #ifdef VIMAGE >>> 1374 if (V_loif) >>> 1375 m->m_pkthdr.rcvif = V_loif; >>> 1376 else { >>> 1377 m_freem(m); >>> 1378 return; >>> (kgdb) >>> >> >> ok so probably there is a code-path to this point that does not first >> set up the current-vnet pointer before doing this. >> what you need to do is to produce a stack-trace so we can see how >> it got here, >> and then we can figure out where on that path we should set the >> pointer. > > Here it is: > (kgdb) #0 doadump () at pcpu.h:231 > #1 0xc04d48b9 in db_fncall (dummy1=1, dummy2=0, dummy3=-1058443808, > dummy4=0xeef1d720 "") at /usr/src/sys/ddb/db_command.c:548 > #2 0xc04d4cb1 in db_command (last_cmdp=0xc0df4bdc, cmd_table=0x0, > dopager=1) > at /usr/src/sys/ddb/db_command.c:445 > #3 0xc04d4e0a in db_command_loop () at > /usr/src/sys/ddb/db_command.c:498 > #4 0xc04d6d0d in db_trap (type=12, code=0) at > /usr/src/sys/ddb/db_main.c:229 > #5 0xc08e17ce in kdb_trap (type=12, code=0, tf=0xeef1d948) > at /usr/src/sys/kern/subr_kdb.c:535 > #6 0xc0c0ae7f in trap_fatal (frame=0xeef1d948, eva=24) > at /usr/src/sys/i386/i386/trap.c:929 > #7 0xc0c0b140 in trap_pfault (frame=0xeef1d948, usermode=0, eva=24) > at /usr/src/sys/i386/i386/trap.c:851 > #8 0xc0c0bad5 in trap (frame=0xeef1d948) at > /usr/src/sys/i386/i386/trap.c:533 > #9 0xc0bec9ac in calltrap () at /usr/src/sys/i386/i386/exception.s:166 > #10 0xc0978200 in rt_dispatch (m=0xc764ad00, sa=0x0) > at /usr/src/sys/net/rtsock.c:1374 > #11 0xc0978864 in rt_ifmsg (ifp=0xc6c3d400) at > /usr/src/sys/net/rtsock.c:1168 > #12 0xc76704a1 in ?? () > #13 0xc6c3d400 in ?? () > #14 0xeef1daa8 in ?? () > #15 0xeef1daf4 in ?? () > #16 0xc769ecb3 in NdisMIndicateStatusComplete (adapter=0xc76b9200) > at /usr/src/sys/modules/ndis/../../compat/ndis/subr_ndis.c:3105 > #17 0xc766d8a1 in ?? () > #18 0xc76b9200 in ?? () > #19 0xc76c0000 in ?? () > #20 0xc76f1000 in ?? () > #21 0xeef1dacc in ?? () > #22 0xc79d2afd in ndis_bcmwl5_sys_drv_data_start () > from /boot/modules/bcmwl5_sys.ko > #23 0x006c0000 in ?? () > #24 0xeef1dbb4 in ?? () > #25 0xc79dcdac in ndis_bcmwl5_sys_drv_data_start () > from /boot/modules/bcmwl5_sys.ko > #26 0xc76c0000 in ?? () > #27 0xc76c0000 in ?? () > #28 0xc7340800 in ?? () > #29 0xc086adcc in hardclock_cpu (usermode=7077888) > at /usr/src/sys/kern/kern_clock.c:447 > #30 0xc79d2afd in ndis_bcmwl5_sys_drv_data_start () > from /boot/modules/bcmwl5_sys.ko > #31 0x006c0000 in ?? () > #32 0xeef1dbb4 in ?? () > #33 0xc79dcdac in ndis_bcmwl5_sys_drv_data_start () > from /boot/modules/bcmwl5_sys.ko > #34 0xc76c0000 in ?? () > #35 0xc76c0000 in ?? () > #36 0xc7340800 in ?? () hmmm maybe we need to get ndis to put in a wrapper at this point that is called form hardclock and sets the value before going further I'd have to look at the code to see what happens here.. *wonders who has their fingers in this code*.. > #37 0xc086adcc in hardclock_cpu (usermode=-949223424) > at /usr/src/sys/kern/kern_clock.c:447 > Previous frame inner to this frame (corrupt stack?) > (kgdb) > > > and the panic, in case it helps: > Fatal trap 12: page fault while in kernel mode > cpuid = 1; apic id = 01 > fault virtual address = 0x18 > fault code = supervisor read, page not present > instruction pointer = 0x20:0xc0978200 > stack pointer = 0x28:0xeef1d988 > frame pointer = 0x28:0xeef1d9a0 > 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 = 1404 (Windows Workitem 3) > panic: from debugger > cpuid = 1 > KDB: stack backtrace: > Physical memory: 2916 MB > Dumping 113 MB: 98 82 66 50 34 18 2 > > Thanks, Nikos >
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