From: David Miller <davem@xxxxxxxxxxxxx> Date: Wed, 01 Oct 2014 16:42:01 -0400 (EDT) > From: Bob Picco <bpicco@xxxxxxxxxx> > Date: Wed, 1 Oct 2014 10:29:00 -0400 > >> [root@ca-qasparc24 ~]# Unable to handle kernel NULL pointer dereference >> BUG: Bad page map in process cc1 pte:9800003fdd860690 pmd:183f3f4b6000 >> page:000600007fbb0c00 count:107055216 mapcount:-524287 mapping: (null) index:0xfff8000107659c00 >> page flags: 0x6c4b6e00004f56(error|referenced|dirty|active|owner_priv_1|arch_1|reserved|private|head) >> page dumped because: bad pte > > The first thing I notice is that the count, mapcount, and flags are all garbage. > > But not just random garbage, all of the non-zero bytes in the page > flags are in visible the ASCII character range. > > 0x6c = 'l' > 0x4b = 'K' > 0x6e = 'n' > 0x4f = 'O' > 0x56 = 'V' > > Anyways, just FYI... Also, Bob, that "Unable to handle kernel NULL pointer dereference" should have placed a good register dump and backtrace into the kernel logs, maybe you can provide that as well. -- To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
