Re: enabling kernel dump options in GENERIC
Mark Millard via freebsd-ppc <[email protected]>
| Newsgroups | gmane.os.freebsd.devel.ppc,gmane.os.freebsd.architechture |
|---|---|
| Message-ID | <[email protected]> |
On 2018-May-17, at 11:17 PM, Mark Johnston <markj at FreeBSD.org> wrote: > On Thu, May 17, 2018 at 08:58:16PM -0700, Mark Millard wrote: >> Mark Johnston markj at FreeBSD.org wrote on >> Thu May 17 17:24:19 UTC 2018 : >> >>> Over the past couple of years, a number of kernel dump features have >>> been added: encryption, compression and dumping to a remote host >>> (netdump). These features are currently all omitted from GENERIC. >>> >>> . . . >>> Therefore, I'd like to propose enabling these features by default >>> on i386, amd64, arm64, powerpc(64) and sparc64 so that they're available >>> out of the box in 12.0. >>> . . . >> >> Bugzilla 214598 (from late 2016) was about >> dump for TARGET_ARCH=powerpc64 builds getting >> failures like: >> >> KDB: enter: manual escape to debugger >> [ thread pid 12 tid 10018 ] >> Stopped at .kdb_enter+0x70: ori r0, r0, 0x0 >> db> dump >> Dumping 9 MB (3 chunks) >> chunk 0: 10MB (2510 pages) ... ok >> chunk 1: 1MB (24 pages) ... ok >> chunk 2: 1MB (2 pages)panic: vm_fault: fault on nofault entry, addr: c000000000022000 >> >> (A 32-bit powerpc build on the same machine worked >> fine for dumping.) >> >> I just tried it with head -r333594 and I got something >> similar. (Old and new mention routines with _bus_dma_map_ >> in the names near the trap in the call stack. I've not >> done a detailed comparison.) > > What is the call stack? I'll have to induce the failure, take a picture of the screen that results, and hand type in the material for the fairly modern backtrace (-r333594). I will not be able to do this until later today. The bugzilla report has the old backtrace. I did not quote all the material from that report in the above. So there is something to compare against once I supply a modern one. Also: in about a week I'll lose access to the PowerMacs for an unknown period of time (weeks? months?). === Mark Millard marklmi at yahoo.com ( dsl-only.net went away in early 2018-Mar) _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-ppc To unsubscribe, send any mail to "[email protected]"