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dkim=pass header.d=citrix.com header.s=securemail header.b=MUBc5d3+; dkim=pass header.d=citrix.onmicrosoft.com header.s=selector2-citrix-onmicrosoft-com header.b=o6Ci050Q; arc=pass ("microsoft.com:s=arcselector9901:i=1"); dmarc=pass (policy=reject) header.from=citrix.com; spf=pass (mx1.freebsd.org: domain of "prvs=076f4df05=roger.pau@citrix.com" designates 216.71.155.175 as permitted sender) smtp.mailfrom="prvs=076f4df05=roger.pau@citrix.com" X-Spamd-Result: default: False [-5.64 / 15.00]; TO_DN_SOME(0.00)[]; R_SPF_ALLOW(-0.20)[+exists:216.71.155.175.spf.hc3370-68.iphmx.com]; RCVD_DKIM_ARC_DNSWL_MED(-0.50)[]; DKIM_TRACE(0.00)[citrix.com:+,citrix.onmicrosoft.com:+]; DMARC_POLICY_ALLOW(-0.50)[citrix.com,reject]; RCVD_IN_DNSWL_MED(-0.20)[216.71.155.175:from]; FREEMAIL_TO(0.00)[gmail.com]; RCVD_COUNT_ZERO(0.00)[0]; MIME_TRACE(0.00)[0:+]; R_MIXED_CHARSET(0.56)[subject]; ASN(0.00)[asn:16417, ipnet:216.71.154.0/23, country:US]; FROM_NEQ_ENVFROM(0.00)[roger.pau@citrix.com,prvs=076f4df05=roger.pau@citrix.com]; ARC_ALLOW(-1.00)[microsoft.com:s=arcselector9901:i=1]; NEURAL_HAM_MEDIUM(-1.00)[-0.995]; R_DKIM_ALLOW(-0.20)[citrix.com:s=securemail,citrix.onmicrosoft.com:s=selector2-citrix-onmicrosoft-com]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[3]; NEURAL_HAM_SHORT(-1.00)[-0.999]; NEURAL_HAM_LONG(-1.00)[-1.000]; MIME_GOOD(-0.10)[text/plain]; FORGED_SENDER_VERP_SRS(0.00)[]; DWL_DNSWL_LOW(-1.00)[citrix.com:dkim]; TO_MATCH_ENVRCPT_SOME(0.00)[]; MLMMJ_DEST(0.00)[freebsd-xen]; MID_RHS_NOT_FQDN(0.50)[] X-ThisMailContainsUnwantedMimeParts: N On Thu, Mar 24, 2022 at 06:38:41PM +0200, Ze Dupsys wrote: > On 2022.03.24. 18:26, Roger Pau Monné wrote: > > > > This seems to be a fairly common trace for your panics: > > > > #0 0xffffffff80c74605 at kdb_backtrace+0x65 > > #1 0xffffffff80c26611 at vpanic+0x181 > > #2 0xffffffff80c26483 at panic+0x43 > > #3 0xffffffff810c1b97 at trap+0xba7 > > #4 0xffffffff810c1bef at trap+0xbff > > #5 0xffffffff810c1243 at trap+0x253 > > #6 0xffffffff81098c58 at calltrap+0x8 > > #7 0xffffffff80c7f251 at rman_is_region_manager+0x241 > > #8 0xffffffff80c36e71 at sbuf_new_for_sysctl+0x101 > > #9 0xffffffff80c362bc at kernel_sysctl+0x3ec > > #10 0xffffffff80c36933 at userland_sysctl+0x173 > > #11 0xffffffff80c3677f at sys___sysctl+0x5f > > #12 0xffffffff810c249c at amd64_syscall+0x10c > > #13 0xffffffff8109956b at Xfast_syscall+0xfb > > > > Could you give me the output of executing the following on dom0: > > > > $ addr2line -e /usr/lib/debug/boot/kernel/kernel.debug 0xffffffff80c7f251 > > $ addr2line -e /usr/lib/debug/boot/kernel/kernel.debug 0xffffffff80c36e71 > > $ addr2line -e /usr/lib/debug/boot/kernel/kernel.debug 0xffffffff80c362bc > > $ addr2line -e /usr/lib/debug/boot/kernel/kernel.debug 0xffffffff80c36933 > > $ addr2line -e /usr/lib/debug/boot/kernel/kernel.debug 0xffffffff80c3677f > > Yes, i'd say that with current stress test the panic message always contains > rman_is_region_manager in mid. That's great. In fact I think I was mislead by the kdb resolved symbols not being very accurate. > addr2line -e /usr/lib/debug/boot/kernel/kernel.debug 0xffffffff80c7f251 > /usr/src/sys/kern/subr_rman.c:0 It's a shame this one hasn't been resolved properly. I think this would point to sysctl_rman, but without proper debug that's just a guess. Could you install GNU binutils and try to resolve using GNU addr2line? $ pkg install binutils $ /usr/local/bin/addr2line -e /usr/lib/debug/boot/kernel/kernel.debug 0xffffffff80c7f251 If you could post the output of that I think it would be helpful. After attempting to resolve the address, can you give the attached patch a try? (maybe it's not going to make a difference, as without that symbol resolved this is just a hunch). ---8<--- diff --git a/sys/kern/subr_rman.c b/sys/kern/subr_rman.c index 1bbaff8264ef..f73151c27bbe 100644 --- a/sys/kern/subr_rman.c +++ b/sys/kern/subr_rman.c @@ -1000,9 +1000,10 @@ sysctl_rman(SYSCTL_HANDLER_ARGS) if (rman_idx-- == 0) break; } - mtx_unlock(&rman_mtx); - if (rm == NULL) + if (rm == NULL) { + mtx_unlock(&rman_mtx); return (ENOENT); + } /* * If the resource index is -1, we want details on the @@ -1016,6 +1017,7 @@ sysctl_rman(SYSCTL_HANDLER_ARGS) urm.rm_start = rm->rm_start; urm.rm_size = rm->rm_end - rm->rm_start + 1; urm.rm_type = rm->rm_type; + mtx_unlock(&rman_mtx); error = SYSCTL_OUT(req, &urm, sizeof(urm)); return (error); @@ -1037,6 +1039,7 @@ sysctl_rman(SYSCTL_HANDLER_ARGS) goto found; } mtx_unlock(rm->rm_mtx); + mtx_unlock(&rman_mtx); return (ENOENT); found: @@ -1062,6 +1065,7 @@ sysctl_rman(SYSCTL_HANDLER_ARGS) ures.r_flags = res->r_flags; mtx_unlock(rm->rm_mtx); + mtx_unlock(&rman_mtx); error = SYSCTL_OUT(req, &ures, sizeof(ures)); return (error); }