Date: Mon, 26 Oct 2015 15:24:19 +0100 From: Oliver Pinter <oliver.pinter@hardenedbsd.org> To: Adrian Chadd <adrian.chadd@gmail.com> Cc: =?UTF-8?Q?Roger_Pau_Monn=C3=A9?= <royger@freebsd.org>, "svn-src-head@freebsd.org" <svn-src-head@freebsd.org>, "svn-src-all@freebsd.org" <svn-src-all@freebsd.org>, "src-committers@freebsd.org" <src-committers@freebsd.org> Subject: Re: svn commit: r289834 - head/sys/x86/x86 Message-ID: <CAPQ4fftgXgDV8YwhFqbAS1mdaiCh5t611gd3u_xNbwukwGiK1Q@mail.gmail.com> In-Reply-To: <CAJ-VmonEk76vZ%2BA=rTYN_H_gVkd2RpL=qJxa8mCPvcQonDOitg@mail.gmail.com> References: <201510231539.t9NFdxPe018130@repo.freebsd.org> <562A564D.9080703@citrix.com> <CAJ-Vmok2WnSe2DA6jf6eLsL=OGsUD2_1LgLFRJi3LAhYk5aMwA@mail.gmail.com> <562E1F8F.3010304@FreeBSD.org> <CAPQ4fft%2B4nSHSRAt%2BnD-DF7XW3W6RR-ADfhYYtgQLNyYCLqE-Q@mail.gmail.com> <CAJ-VmonEk76vZ%2BA=rTYN_H_gVkd2RpL=qJxa8mCPvcQonDOitg@mail.gmail.com>
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On 10/26/15, Adrian Chadd <adrian.chadd@gmail.com> wrote: > Hi, > > I'll take a photo of it when it breaks next. > > Would you mind reverting it for now until we can figure it out? btw, this was the two kernel panic what I got: Fatal trap 12: page fault while in kernel mode cpuid =3D 11; apic id =3D 03 fault virtual address =3D 0x30 fault code =3D supervisor read data, page not present instruction pointer =3D 0x20:0xffffffff808a2d22 stack pointer =3D 0x28:0xfffffe07cc75a6f0 frame pointer =3D 0x28:0xfffffe07cc75a770 code segment =3D base 0x0, limit 0xfffff, type 0x1b =3D DPL 0, pres 1, long 1, def32 0, gran 1 processor eflags =3D interrupt enabled, resume, IOPL =3D 0 current process =3D 5 (doneq0) trap number =3D 12 panic: page fault cpuid =3D 11 KDB: stack backtrace: #0 0xffffffff80641647 at kdb_backtrace+0x67 #1 0xffffffff80606762 at vpanic+0x182 #2 0xffffffff806067e3 at panic+0x43 #3 0xffffffff8084eef1 at trap_fatal+0x351 #4 0xffffffff8084f0e4 at trap_pfault+0x1e4 #5 0xffffffff8084e82f at trap+0x4bf #6 0xffffffff80830d57 at calltrap+0x8 #7 0xffffffff8063beab at _bus_dmamap_load_ccb+0x1fb #8 0xffffffff8063bc51 at bus_dmamap_load_ccb+0x91 #9 0xffffffff8042dcad at ata_dmaload+0x11d #10 0xffffffff8042df7e at ata_begin_transaction+0x7e #11 0xffffffff8042c18e at ataaction+0x9ce #12 0xffffffff802a220f at xpt_run_devq+0x5bf #13 0xffffffff802a17ad at xpt_action_default+0x94d #14 0xffffffff802c0024 at adastart+0x8b4 #15 0xffffffff802a2e93 at xpt_run_allocq+0x193 #16 0xffffffff802c0ea0 at adadone+0x280 #17 0xffffffff802a5310 at xpt_done_process+0x3a0 Uptime: 1m40s Fatal trap 12: page fault while in kernel mode cpuid =3D 11; apic id =3D 03 fault virtual address =3D 0x30 fault code =3D supervisor read data, page not present instruction pointer =3D 0x20:0xffffffff808a2d22 stack pointer =3D 0x28:0xfffffe07cc737710 frame pointer =3D 0x28:0xfffffe07cc737790 code segment =3D base 0x0, limit 0xfffff, type 0x1b =3D DPL 0, pres 1, long 1, def32 0, gran 1 processor eflags =3D interrupt enabled, resume, IOPL =3D 0 current process =3D 13 (g_down) trap number =3D 12 panic: page fault cpuid =3D 11 KDB: stack backtrace: #0 0xffffffff80641647 at kdb_backtrace+0x67 #1 0xffffffff80606762 at vpanic+0x182 #2 0xffffffff806067e3 at panic+0x43 #3 0xffffffff8084eef1 at trap_fatal+0x351 #4 0xffffffff8084f0e4 at trap_pfault+0x1e4 #5 0xffffffff8084e82f at trap+0x4bf #6 0xffffffff80830d57 at calltrap+0x8 #7 0xffffffff8063beab at _bus_dmamap_load_ccb+0x1fb #8 0xffffffff8063bc51 at bus_dmamap_load_ccb+0x91 #9 0xffffffff8042dcad at ata_dmaload+0x11d #10 0xffffffff8042df7e at ata_begin_transaction+0x7e #11 0xffffffff8042c18e at ataaction+0x9ce #12 0xffffffff802a220f at xpt_run_devq+0x5bf #13 0xffffffff802a17ad at xpt_action_default+0x94d #14 0xffffffff802c0024 at adastart+0x8b4 #15 0xffffffff802a2e93 at xpt_run_allocq+0x193 #16 0xffffffff802c0735 at adastrategy+0xf5 #17 0xffffffff80554206 at g_disk_start+0x426 Uptime: 2m29s Extra info, it's a Dell R410, with 2x1TB disc in mirrored raidz + plus a gmirrored partition. > > > > -adrian > > > On 26 October 2015 at 05:53, Oliver Pinter > <oliver.pinter@hardenedbsd.org> wrote: >> Hi Roger! >> >> On 10/26/15, Roger Pau Monn=C3=A9 <royger@freebsd.org> wrote: >>> El 26/10/15 a les 13.24, Adrian Chadd ha escrit: >>>> Hi, >>>> >>>> I've started seeing panics on -head with ATA code doing a dmamap load >>>> -> panic. I'll test by reverting this patch and see what happens, but >>>> when it /does/ happen I can't get a crashdump, so debugging will be >>>> less easy. >>>> >>>> Has anyone else seen this? >>> >>> I've got another report regarding ATA page-faults from Oliver Pinter. >>> The crash he was seeing was caused by bus_dmamap_load_ccb, but the call= s >>> to the specific dma functions where optimized away. Can you figure out >>> which bounce_* function causes this specifically? >> >> I have already deleted the broken kernel, and I'm now running on >> kernel without this patch. >> >>> >>> Thanks, Roger. >>> >>> _______________________________________________ >>> svn-src-head@freebsd.org mailing list >>> https://lists.freebsd.org/mailman/listinfo/svn-src-head >>> To unsubscribe, send any mail to "svn-src-head-unsubscribe@freebsd.org" >>> >
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