Re: [Crash-utility] Crash problems with Xen

----- Original Message ----- > On 03/10/15 09:49, Dave Anderson wrote: >> >> >> ----- Original Message ----- >>> Hi, >>> >>> for me crash failed to debug xen environments with: >>> >>> crash: invalid structure member offset: domain_is_paused_by_controller >>> FILE: xen_hyper.c LINE: 1255 FUNCTION: >>> xen_hyper_store_domain_context() >>> >>> [/usr/bin/crash] error trace: 546170 => 545bc9 => 545a81 => 510fd0 >>> >>> 510fd0: OFFSET_verify+224 >>> 545a81: xen_hyper_store_domain_context+1265 >>> 545bc9: xen_hyper_refresh_domain_context_space+153 >>> 546170: xen_hyper_domain_init+864 >>> >>> The problem is a change of an item in struct domain in xen version 4.2 > > This is not 100% correct. The versions are: > > 4.2.5, 4.3.3, 4.4.1, 4.5.0 By that you mean "4.2.5 and later", correct?

Dave > >>> I tried to fix the problem for me so I can debug the old and the newer >>> xen versions. I'm not sure this was the right way to fix this. >>> Thanks. >>> >>> Dietmar. >> >> Your patch looks reasonable. I have two *very* minor nits: >> >> (1) Put the new domain_controller_pause_count at the end of the >> xen_hyper_offset_table. >> In the fairly unlikely event that somebody has an extension module for >> xen >> debugging, it will break unless recompiled. >> (2) In xen_hyper_dump_xen_hyper_offset_table(), display both the old and >> new offsets. >> That fact that one or the other shows -1 would be more helpful than not >> showing it. >> > > I will 2nd the output of both. > -Don Slutz > >> Note that these suggestions apply to the mainline offset[] table and the >> dump_offset_table() >> function. >> >> Thanks, >> Dave >> >> >>> >>> diff -pNaur crash-7.1.0-org/xen_hyper.c crash-7.1.0/xen_hyper.c >>> --- crash-7.1.0-org/xen_hyper.c 2015-02-06 19:44:11.000000000 +0100 >>> +++ crash-7.1.0/xen_hyper.c 2015-03-10 13:57:48.000000000 +0100 >>> @@ -218,7 +218,12 @@ xen_hyper_domain_init(void) >>> XEN_HYPER_MEMBER_OFFSET_INIT(domain_is_polling, "domain", "is_polling"); >>> >>> XEN_HYPER_MEMBER_OFFSET_INIT(domain_is_dying, "domain", "is_dying"); >>> + /* >>> + * In Xen 4.2 is_paused_by_controller changed to >>> + * controller_pause_count. >>> + */ >>> XEN_HYPER_MEMBER_OFFSET_INIT(domain_is_paused_by_controller, "domain", >>> "is_paused_by_controller"); >>> + XEN_HYPER_MEMBER_OFFSET_INIT(domain_controller_pause_count, "domain", >>> "controller_pause_count"); >>> XEN_HYPER_MEMBER_OFFSET_INIT(domain_is_shutting_down, "domain", >>> "is_shutting_down"); >>> XEN_HYPER_MEMBER_OFFSET_INIT(domain_is_shut_down, "domain", >>> "is_shut_down"); >>> XEN_HYPER_MEMBER_OFFSET_INIT(domain_vcpu, "domain", "vcpu"); >>> @@ -1269,9 +1274,15 @@ xen_hyper_store_domain_context(struct xe >>> *(dp + XEN_HYPER_OFFSET(domain_is_polling))) { >>> dc->domain_flags |= XEN_HYPER_DOMS_polling; >>> } >>> - if (*(dp + XEN_HYPER_OFFSET(domain_is_paused_by_controller))) { >>> + if (XEN_HYPER_VALID_MEMBER(domain_is_paused_by_controller) && >>> + *(dp + XEN_HYPER_OFFSET(domain_is_paused_by_controller))) { >>> dc->domain_flags |= XEN_HYPER_DOMS_ctrl_pause; >>> } >>> + if (XEN_HYPER_VALID_MEMBER(domain_controller_pause_count) && >>> + *(dp + XEN_HYPER_OFFSET(domain_controller_pause_count))) { >>> + dc->domain_flags |= XEN_HYPER_DOMS_ctrl_pause; >>> + } >>> + >>> if (*(dp + XEN_HYPER_OFFSET(domain_is_dying))) { >>> dc->domain_flags |= XEN_HYPER_DOMS_dying; >>> } >>> diff -pNaur crash-7.1.0-org/xen_hyper_defs.h crash-7.1.0/xen_hyper_defs.h >>> --- crash-7.1.0-org/xen_hyper_defs.h 2015-02-06 19:44:11.000000000 +0100 >>> +++ crash-7.1.0/xen_hyper_defs.h 2015-03-10 13:52:37.000000000 +0100 >>> @@ -679,6 +679,7 @@ struct xen_hyper_offset_table { >>> long domain_is_polling; >>> long domain_is_dying; >>> long domain_is_paused_by_controller; >>> + long domain_controller_pause_count; >>> long domain_is_shutting_down; >>> long domain_is_shut_down; >>> long domain_vcpu; >>> diff -pNaur crash-7.1.0-org/xen_hyper_dump_tables.c >>> crash-7.1.0/xen_hyper_dump_tables.c >>> --- crash-7.1.0-org/xen_hyper_dump_tables.c 2015-02-06 19:44:11.000000000 >>> +0100 >>> +++ crash-7.1.0/xen_hyper_dump_tables.c 2015-03-10 14:00:20.000000000 >>> +0100 >>> @@ -784,8 +784,14 @@ xen_hyper_dump_xen_hyper_offset_table(ch >>> } >>> XEN_HYPER_PRI(fp, len, "domain_is_dying: ", buf, flag, >>> (buf, "%ld\n", xen_hyper_offset_table.domain_is_dying)); >>> - XEN_HYPER_PRI(fp, len, "domain_is_paused_by_controller: ", buf, flag, >>> - (buf, "%ld\n", xen_hyper_offset_table.domain_is_paused_by_controller)); >>> + if (XEN_HYPER_VALID_MEMBER(domain_is_paused_by_controller)) { >>> + XEN_HYPER_PRI(fp, len, "domain_is_paused_by_controller: ", buf, flag, >>> + (buf, "%ld\n", >>> xen_hyper_offset_table.domain_is_paused_by_controller)); >>> + } >>> + if (XEN_HYPER_VALID_MEMBER(domain_controller_pause_count)) { >>> + XEN_HYPER_PRI(fp, len, "domain_controller_pause_count: ", buf, flag, >>> + (buf, "%ld\n", xen_hyper_offset_table.domain_controller_pause_count)); >>> + } >>> XEN_HYPER_PRI(fp, len, "domain_is_shutting_down: ", buf, flag, >>> (buf, "%ld\n", xen_hyper_offset_table.domain_is_shutting_down)); >>> XEN_HYPER_PRI(fp, len, "domain_is_shut_down: ", buf, flag, >>> >>> >>> >>> >>> >>> -- >>> Company details: http://ts.fujitsu.com/imprint.html >>> >>> -- >>> Crash-utility mailing list >>> Crash-utility(a)redhat.com >>> https://www.redhat.com/mailman/listinfo/crash-utility >>> >> >> -- >> Crash-utility mailing list >> Crash-utility(a)redhat.com >> https://www.redhat.com/mailman/listinfo/crash-utility >> > > -- > Crash-utility mailing list > Crash-utility(a)redhat.com > https://www.redhat.com/mailman/listinfo/crash-utility > -- Crash-utility mailing list Crash-utility(a)redhat.com https://www.redhat.com/mailman/listinfo/crash-utility