Date: Tue, 21 Jun 2016 01:55:11 -0700 From: Mark Millard <markmi@dsl-only.net> To: otacilio.neto@bsd.com.br, freebsd-arm <freebsd-arm@freebsd.org>, FreeBSD Current <freebsd-current@freebsd.org> Subject: (beagleboneblack/urtwn) Kernel page fault with the following non-sleepable locks held [ssh on rpi2 comparison] Message-ID: <99277FB6-77EB-4D8B-8A55-FBD622D29AC3@dsl-only.net>
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Otac=C3=ADlio otacilio.neto at bsd.com.br wrote on Tue Jun 21 00:06:39 = UTC 2016 : > > The kernel panic is totally reproducible. I need only do a ssh in = the > > beaglebone using ptty on windows or ssh on freebsd and the kernel=20 > > panic is raised. . . . > FreeBSD11-ALPHA4 shows the same behavior. The only thing that I need = to=20 > raise the fault is ssh in the beaglebone. (After this quotes are command input/output from my test activity.) Under 11.0 -r310975 on a rpi2 I can ssh out of the rpi2 just fine. . . > # uname -apKU > FreeBSD rpi2 11.0-ALPHA4 FreeBSD 11.0-ALPHA4 #1 r301975M: Thu Jun 16 = 18:12:02 PDT 2016 = markmi@FreeBSDx64:/usr/obj/clang/arm.armv6/usr/src/sys/RPI2-NODBG arm = armv6 1100117 1100117 This is a no-debug kernel build (but with symbols). Details are given = later below. > # ssh markmi@192.168.0.105 > Password: > Last login: Tue Jun 21 01:04:46 2016 > markmi$=20 Similarly I can ssh into the rpi2 from outside, here using new remote = connection in Mac OS X terminal: ssh 192.168.0.119 resulted in. . . > Password for markmi@rpi2: > Last login: Mon May 9 19:27:33 2016 from 192.168.2.1 > FreeBSD 11.0-ALPHA4 (RPI2-NODBG) #1 r301975M: Thu Jun 16 18:12:02 PDT = 2016 >=20 > Welcome to FreeBSD! >=20 > Release Notes, Errata: https://www.FreeBSD.org/releases/ > Security Advisories: https://www.FreeBSD.org/security/ > FreeBSD Handbook: https://www.FreeBSD.org/handbook/ > FreeBSD FAQ: https://www.FreeBSD.org/faq/ > Questions List: = https://lists.FreeBSD.org/mailman/listinfo/freebsd-questions/ > FreeBSD Forums: https://forums.FreeBSD.org/ >=20 > Documents installed with the system are in the = /usr/local/share/doc/freebsd/ > directory, or can be installed later with: pkg install en-freebsd-doc > For other languages, replace "en" with a language code like de or fr. >=20 > Show the version of FreeBSD installed: freebsd-version ; uname -a > Please include that output and any error messages when posting = questions. > Introduction to manual pages: man man > FreeBSD directory layout: man hier >=20 > Edit /etc/motd to change this login announcement. > To determine whether a file is a text file, executable, or some other = type > of file, use >=20 > file filename > -- Dru <genesis@istar.ca> > $=20 No panics or other odd notices. The problem is apparently not general to all armv6 contexts. Various context details follow. . . > # more ~/src.configs/src.conf.rpi2-clang-bootstrap.rpi2-host=20 > TO_TYPE=3Darmv6 > # > KERNCONF=3DRPI2-NODBG > TARGET=3Darm > .if ${.MAKE.LEVEL} =3D=3D 0 > TARGET_ARCH=3D${TO_TYPE} > .export TARGET_ARCH > .endif > # > #WITH_CROSS_COMPILER=3D > WITH_SYSTEM_COMPILER=3D > # > #CPUTYPE=3Dsoft > WITH_LIBSOFT=3D > WITH_LIBCPLUSPLUS=3D > WITH_BINUTILS_BOOTSTRAP=3D > #WITHOUT_CLANG_BOOTSTRAP=3D > WITH_CLANG=3D > WITH_CLANG_IS_CC=3D > WITH_CLANG_FULL=3D > WITH_CLANG_EXTRAS=3D > WITH_LLDB=3D > # > WITH_BOOT=3D > WITHOUT_LIB32=3D > # > WITHOUT_ELFTOOLCHAIN_BOOTSTRAP=3D > WITHOUT_GCC_BOOTSTRAP=3D > WITHOUT_GCC=3D > WITHOUT_GCC_IS_CC=3D > WITHOUT_GNUCXX=3D > # > NO_WERROR=3D > #WERROR=3D > MALLOC_PRODUCTION=3D > # > WITH_DEBUG_FILES=3D > # > XCFLAGS+=3D -march=3Darmv7-a -mcpu=3Dcortex-a7 > XCXXFLAGS+=3D -march=3Darmv7-a -mcpu=3Dcortex-a7 > # There is no XCPPFLAGS but XCPP ets XCFLAGS content. ~/src.configs/make.conf was empty. > # more /usr/src/sys/arm/conf/RPI2-NODBG > # > # RPI2 -- Custom configuration for the Raspberry Pi 2 > # > # For more information on this file, please read the config(5) manual = page, > # and/or the handbook section on Kernel Configuration Files: > # > # = http://www.FreeBSD.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig-con= fig.html > # > # The handbook is also available locally in /usr/share/doc/handbook > # if you've installed the doc distribution, otherwise always see the > # FreeBSD World Wide Web server (http://www.FreeBSD.org/) for the > # latest information. > # > # An exhaustive list of options and more detailed explanations of the > # device lines is also present in the ../../conf/NOTES and NOTES = files. > # If you are in doubt as to the purpose or necessity of a line, check = first > # in NOTES. > # > =20 > ident RPI2-NODBG > =20 > include "RPI2" > =20 > makeoptions DEBUG=3D-g # Build kernel with gdb(1) = debug symbols > options ALT_BREAK_TO_DEBUGGER > #options VERBOSE_SYSINIT # Enable verbose sysinit = messages > =20 > options KDB # Enable kernel debugger = support > =20 > # For minimum debugger support (stable branch) use: > #options KDB_TRACE # Print a stack trace for a = panic > options DDB # Enable the kernel debugger > =20 > nooptions INVARIANTS # Enable calls of extra sanity = checking > nooptions INVARIANT_SUPPORT # Extra sanity checks of = internal structures, required by INVARIANTS > nooptions WITNESS # Enable checks to detect = deadlocks and cycles > nooptions WITNESS_SKIPSPIN # Don't run witness on = spinlocks for speed > nooptions DIAGNOSTIC My /usr/src tree has some changes/additions --but mostly for powerpc64 = and powerpc issues: > # svnlite status /usr/src/ > M = /usr/src/contrib/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp > M /usr/src/lib/csu/powerpc64/Makefile > ? /usr/src/sys/amd64/include/include > ? /usr/src/sys/arm/conf/RPI2-NODBG > ? /usr/src/sys/arm/include/include > M /usr/src/sys/boot/ofw/Makefile.inc > M /usr/src/sys/boot/powerpc/Makefile > M /usr/src/sys/boot/powerpc/Makefile.inc > M /usr/src/sys/boot/uboot/Makefile.inc > M /usr/src/sys/conf/Makefile.powerpc > M /usr/src/sys/conf/kern.mk > M /usr/src/sys/conf/kmod.mk > M /usr/src/sys/dev/cxgb/ulp/tom/cxgb_listen.c > M /usr/src/sys/dev/cxgbe/tom/t4_listen.c > ? /usr/src/sys/powerpc/conf/GENERIC64-NODBG > ? /usr/src/sys/powerpc/conf/GENERIC64vtsc > ? /usr/src/sys/powerpc/conf/GENERIC64vtsc-NODEBUG > ? /usr/src/sys/powerpc/conf/GENERICvtsc > ? /usr/src/sys/powerpc/conf/GENERICvtsc-NODEBUG > ? /usr/src/sys/powerpc/include/include > M /usr/src/sys/powerpc/ofw/ofw_machdep.c > M /usr/src/sys/powerpc/powerpc/exec_machdep.c > ? /usr/src/sys/x86/include/include (The include/include ones are from something making links pointing back = up to the parent include/ . I did not explicitly create these.) (The cxbg and cxbge ones were from trying to have amd64 target amd64 via = xtoolchain (devel/amd64-gcc). But other places also stopped it and I = quit trying that for now.) > # more /etc/rc.conf > hostname=3D"rpi2" > ifconfig_ue0=3D"DHCP" > sshd_enable=3D"YES" > =20 > powerd_enable=3D"YES" > =20 > # Nice if you have a network, else annoying. > ntpd_enable=3D"YES" > ntpd_sync_on_start=3D"YES" > =20 > # Uncomment to disable common services (more memory) > #cron_enable=3D"NO" > #syslogd_enable=3D"NO" > sendmail_enable=3D"NONE" > sendmail_submit_enable=3D"NO" > sendmail_outbound_enable=3D"NO" > sendmail_msp_queue_enable=3D"NO" > # > # Set dumpdev to "AUTO" to enable crash dumps, "NO" to disable > dumpdev=3D"AUTO" > # > dbus_enable=3D"YES" > hald_enable=3D"YES" > # > rpcbind_enable=3D"YES" > nfs_server_enable=3D"YES" > mountd_flags=3D"-r" > # > nfs_client_enable=3D"YES" > # more /etc/sysctl.conf=20 > # $FreeBSD: head/etc/sysctl.conf 112200 2003-03-13 18:43:50Z mux $ > # > # This file is read when going to multi-user and its contents piped = thru > # ``sysctl'' to adjust kernel values. ``man 5 sysctl.conf'' for = details. > # > =20 > # Uncomment this to prevent users from seeing information about = processes that > # are being run under another UID. > #security.bsd.see_other_uids=3D0 > =20 > kern.nodump_coredump=3D1 > kern.capmode_coredump=3D1 > kern.sugid_coredump=3D1 > kern.corefile=3D/var/crash/%N.%P.core /etc/fstab , /etc/exports , /etc/resolv.conf are very simple but = non-default. Other than password files and the like the rest of /etc/. . = . is just defaults. > # more /boot/loader.conf=20 > kern.cam.boot_delay=3D"10000" =3D=3D=3D Mark Millard markmi at dsl-only.net
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