----- "Alok Kataria" <akataria@xxxxxxxxxx> wrote: > Hi, > > I am trying to debug a bug on SLES 10 kernel using crash. > I have the vmlinux and the vmlinux.debug file for the corresponding > kernel but when I try to start crash it hangs while loading the "slab > cache" data. > **** > crash 4.0-7.2.3.el5_3.1 > .... > .... > GNU gdb 6.1 > .... > This GDB was configured as "x86_64-unknown-linux-gnu"... > > please wait... (gathering kmem slab cache data) > **** > > I then ran crash with "-d 99" debugging support. > Looking at the debug data generated from crash, below is the text which > is repeatedly printed by crash. > > ------ > crash: invalid kernel virtual address: 47 type: "kmem_list3 shared" > <readmem: ffff81000f6266c8, KVADDR, "kmem_list3 shared", 8, (ROE|Q), 7fff89fb1f00> > <readmem: f88948c3c0310006, KVADDR, "shared array_cache limit", 4, (ROE|Q), 7fff89fb1f0c> > > crash: invalid kernel virtual address: f88948c3c0310006 type: "shared array_cache limit" > FREEBUF(1) > <readmem: ffff81000f5ab1a0, KVADDR, "kmem_cache_s buffer", 1648, (ROE), a5a480> > <readmem: ffff81000f5ab1a0, KVADDR, "array cache array", 1024, (ROE), 7fff89fb1f10> > GETBUF(512 -> 1) > <readmem: ffff81000f5ab5b0, KVADDR, "array nodelist array", 512, (ROE), a57c80> > <readmem: 47, KVADDR, "kmem_list3 shared", 8, (ROE|Q), 7fff89fb1f00> > crash: invalid kernel virtual address: 47 type: "kmem_list3 shared" > <readmem: 47, KVADDR, "kmem_list3 shared", 8, (ROE|Q), 7fff89fb1f00> > ------ > > Is there a way to tell crash to skip loading slab data ? Or is this a > known bug with crash on sles 10 ? I can't help you with SLES10 issues, or whether this is a "known bug" on SLES10, but yes, you can skip the kmem/slab initialization by putting "--no_kmem_cache" on the command line. Dave > > Please let me know what might be going wrong here. > > Thanks, > Alok > > -- > Crash-utility mailing list > Crash-utility@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/crash-utility -- Crash-utility mailing list Crash-utility@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/crash-utility
