- kernelnewbies@kernelnewbies.org - Kernelnewbies Mailing Lists

jffs2: Empty flash at 0x0000ff54 ends at 0x00010000 CLEANMARKER node found
by Frank Smith Jan. 9, 2018

Jan. 9, 2018

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Meltdown/spectre patches.
by Nick Warne Jan. 8, 2018

Jan. 8, 2018

Hi all, Rather than bother the main kernel list with what is going on, does anybody know if the latest source code on kernel.org contains the patches, or do I need to apply externally? Thanks, Nick

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Help
by Farouk Maâboudallah Jan. 6, 2018

Jan. 6, 2018

Good evening everyone :) I'm new here with you guys. I have been using Linux for 6 months ... And now I'm looking forward to develop and improve my skills. I'm a student in digital mechanics which means developing, programming and simulating in mechanical engineering. I have C, Matlab and Python as a background (another code for simulation like ansys, abaqus, ...). Now, I want to learn how to develop linux kernel or something like that ... Any helps, any suggestion are welcome :) Thanks, Linuxely For GNU/UNIX For free software, -- *P* Pour préserver notre environnement, merci de n'imprimer cet Email que si nécessaire !

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wiki & email upgrades
by Rik van Riel Jan. 5, 2018

Jan. 5, 2018

Hello, As you may have noticed (if you weren't too busy celebrating the holidays), I have upgraded kernelnewbies.org to a new version of the wiki, and am also upgrading the email system. This email is both an announcement, and a test of the new email configuration. If you notice lingering problems, please contact me via email (if it works) or Facebook Messenger. kind regards, Rik -- All Rights Reversed.

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Re: wiki & email upgrades - archives
by inventsekar Jan. 4, 2018

Jan. 4, 2018

Hi Rik, >>To see the collection of prior postings to >>the list, visit the Kernelnewbies Archives <http://lists.kernelnewbies.org/pipermail/kernelnewbies/>. This kernel easiest archives page is not working. Not sure if this related to wiki & email upgrades, but just thought to notify you. Best regards Sekar On Jan 3, 2018 1:00 AM, <kernelnewbies-request(a)kernelnewbies.org> wrote: Send Kernelnewbies mailing list submissions to kernelnewbies(a)kernelnewbies.org To subscribe or unsubscribe via the World Wide Web, visit https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies or, via email, send a message with subject or body 'help' to kernelnewbies-request(a)kernelnewbies.org You can reach the person managing the list at kernelnewbies-owner(a)kernelnewbies.org When replying, please edit your Subject line so it is more specific than "Re: Contents of Kernelnewbies digest..." Today's Topics: 1. (Rik van Riel) 2. Re: wiki & email upgrades (Jalus Bilieyich) 3. Re: wiki & email upgrades (Ozgur) ---------------------------------------------------------------------- Message: 1 Date: Mon, 01 Jan 2018 13:44:17 -0500 From: Rik van Riel <riel(a)surriel.com> To: kernelnewbies <kernelnewbies(a)kernelnewbies.org> Subject: wiki & email upgrades Message-ID: <1514832257.6619.62.camel(a)surriel.com> Content-Type: text/plain; charset="utf-8" Hello, As you may have noticed (if you weren't too busy celebrating the holidays), I have upgraded kernelnewbies.org to a new version of the wiki, and am also upgrading the email system. This email is both an announcement, and a test of the new email configuration. If you notice lingering problems, please contact me via email (if it works) or Facebook Messenger. kind regards, Rik -- All Rights Reversed.

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Mailing list
by Farouk Maâboudallah Dec. 31, 2017

Dec. 31, 2017

Hi ! My email is farouk.maaboudallah(a)gmail.com Best regards Sent from my iPhone

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Re: building debug version of klibc
by Anatoly Pugachev Dec. 30, 2017

Dec. 30, 2017

On Sat, Dec 30, 2017 at 2:30 PM, Sam Ravnborg <sam(a)ravnborg.org> wrote: > Hi Anatoly > > On Sat, Dec 30, 2017 at 01:54:05PM +0300, Anatoly Pugachev wrote: >> Hello! >> >> Can someone please help me in building debug version of klibc ? >> >> I've cloned git://git.kernel.org/pub/scm/libs/klibc/klibc.git , but >> failed to build it with debug info >> >> added "-g" to HOSTCFLAGS in Makefile, but > > HOSTCFLAGS is used when building tools running on your build machine. > > Try something like this (untested, whitespace damaged): > > diff --git a/scripts/Kbuild.klibc b/scripts/Kbuild.klibc > index f500d535..3e8124f7 100644 > --- a/scripts/Kbuild.klibc > +++ b/scripts/Kbuild.klibc > @@ -69,7 +69,7 @@ include $(srctree)/scripts/Kbuild.include > KLIBCREQFLAGS := $(call cc-option, -fno-stack-protector, ) \ > $(call cc-option, -fwrapv, ) > KLIBCARCHREQFLAGS := > -KLIBCOPTFLAGS := > +KLIBCOPTFLAGS := -g > KLIBCWARNFLAGS := -W -Wall -Wno-sign-compare -Wno-unused-parameter > KLIBCSHAREDFLAGS := > KLIBCBITSIZE := > > If you use make V=1 then you should be able to see the > full gcc command line, where -g should be included with > theabove fix. Sam, thanks! I did notice that later as well, but I've changed KLIBCCFLAGS to include "-g" and changed strip to echo: mator@ttip:~/klibc$ git diff diff --git a/scripts/Kbuild.klibc b/scripts/Kbuild.klibc index f500d535..40cbfd60 100644 --- a/scripts/Kbuild.klibc +++ b/scripts/Kbuild.klibc @@ -74,7 +74,7 @@ KLIBCWARNFLAGS := -W -Wall -Wno-sign-compare -Wno-unused-parameter KLIBCSHAREDFLAGS := KLIBCBITSIZE := KLIBCLDFLAGS := -KLIBCCFLAGS := +KLIBCCFLAGS := -g # Defaults for arch to override KLIBCARCHINCFLAGS = -I$(KLIBCKERNELOBJ)/arch/$(KLIBCARCH)/include @@ -99,7 +99,7 @@ KLIBCAR := $(AR) klibc-ar = $(KLIBCAR) $(if $(KBUILD_REPRODUCIBLE),$(2),$(1)) KLIBCRANLIB := $(call klibc-ar,s,Ds) -KLIBCSTRIP := $(STRIP) +KLIBCSTRIP := echo KLIBCNM := $(NM) KLIBCOBJCOPY := $(OBJCOPY) KLIBCOBJDUMP := $(OBJDUMP) @@ -126,7 +126,7 @@ KLIBCCPPFLAGS += $(KLIBCDEFS) KLIBCCFLAGS += $(KLIBCCPPFLAGS) $(KLIBCREQFLAGS) $(KLIBCARCHREQFLAGS) \ $(KLIBCOPTFLAGS) $(KLIBCWARNFLAGS) KLIBCAFLAGS += -D__ASSEMBLY__ $(KLIBCCFLAGS) -KLIBCSTRIPFLAGS += --strip-all -R .comment -R .note +#KLIBCSTRIPFLAGS += --strip-all -R .comment -R .note KLIBCLIBGCC_DEF := $(shell $(KLIBCCC) $(KLIBCCFLAGS) --print-libgcc) KLIBCLIBGCC ?= $(KLIBCLIBGCC_DEF) mator@ttip:~/klibc$ this helped me to produce exec with debug info and stack trace: (gdb) file ./usr/kinit/fstype/static/fstype Reading symbols from ./usr/kinit/fstype/static/fstype...done. (gdb) run Starting program: /home/mator/klibc/usr/kinit/fstype/static/fstype Program received signal SIGSEGV, Segmentation fault. __syscall_common () at usr/klibc/arch/sparc64/syscall.S:15 15 st %o0,[%g4] (gdb) bt #0 __syscall_common () at usr/klibc/arch/sparc64/syscall.S:15 #1 0x00000000001010d4 in identify_fs () #2 0x00000000001001f0 in main () PS: added sparclinux@vger , first thread message is http://www.zytor.com/pipermail/klibc/2017-December/003962.html

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building debug version of klibc
by Anatoly Pugachev Dec. 30, 2017

Dec. 30, 2017

Hello! Can someone please help me in building debug version of klibc ? I've cloned git://git.kernel.org/pub/scm/libs/klibc/klibc.git , but failed to build it with debug info added "-g" to HOSTCFLAGS in Makefile, but $ make -j KLIBCKERNELSRC=`pwd`/../linux-2.6/usr still strips every debug symbol , and i'm failed to change scripts/Kbuild.klibc and Makefile to remove strip usage klibc$ find . -name fstype | xargs file ./usr/kinit/fstype: directory ./usr/kinit/fstype/static/fstype: ELF 64-bit MSB executable, SPARC V9, relaxed memory ordering, version 1 (SYSV), statically linked, stripped ./usr/kinit/fstype/shared/fstype: ELF 64-bit MSB executable, SPARC V9, relaxed memory ordering, version 1 (SYSV), statically linked, interpreter /lib/klibc-M67ne2AU3wnuYln_9h2L1vfH5J0.so, stripped I started to get segfault in fstype: linux-2.6$ make install ... DEPMOD 4.15.0-rc5-00149-g5aa90a845892 sh ./arch/sparc/boot/install.sh 4.15.0-rc5-00149-g5aa90a845892 arch/sparc/boot/zImage \ System.map "/boot" run-parts: executing /etc/kernel/postinst.d/apt-auto-removal 4.15.0-rc5-00149-g5aa90a845892 /boot/vmlinuz-4.15.0-rc5-00149-g5aa90a845892 run-parts: executing /etc/kernel/postinst.d/initramfs-tools 4.15.0-rc5-00149-g5aa90a845892 /boot/vmlinuz-4.15.0-rc5-00149-g5aa90a845892 update-initramfs: Generating /boot/initrd.img-4.15.0-rc5-00149-g5aa90a845892 Segmentation fault run-parts: executing /etc/kernel/postinst.d/zz-update-grub 4.15.0-rc5-00149-g5aa90a845892 /boot/vmlinuz-4.15.0-rc5-00149-g5aa90a845892 Dec 30 12:51:06 ttip kernel: fstype[162686]: segfault at 38 ip 000000008001069c (rpc 0000000080004820) sp 000007feffdf53a1 error 1 in klibc-g_9mplOvk_73CeIA8YN-t9vhxyc.so[80000000+14000] linux-2.6$ gdb -q -c core.164896 [New LWP 164896] Core was generated by `/usr/lib/klibc/bin/fstype /dev/vdiska2'. Program terminated with signal SIGSEGV, Segmentation fault. #0 0x000000008001069c in ?? () linux-2.6$ $ find /usr -name fstype | xargs file /usr/lib/klibc/bin/fstype: ELF 64-bit MSB executable, SPARC V9, relaxed memory ordering, version 1 (SYSV), statically linked, interpreter /lib/klibc-g_9mplOvk_73CeIA8YN-t9vhxyc.so, stripped linux-2.6# file -s /dev/vdiska2 /dev/vdiska2: Linux rev 1.0 ext4 filesystem data, UUID=f2eda779-5310-4af2-b48a-b43db51c0961 (needs journal recovery) (extents) (64bit) (large files) (huge files) $ dpkg -S /usr/lib/klibc/bin/fstype klibc-utils: /usr/lib/klibc/bin/fstype $ dpkg -l klibc-utils ||/ Name Version Architecture Description +++-==================================-======================-======================-========================================================================= ii klibc-utils 2.0.4-10 sparc64 small utilities built with klibc for early boot $ apt show klibc-utils Package: klibc-utils Version: 2.0.4-10 Priority: optional Section: libs Source: klibc Maintainer: maximilian attems <maks(a)debian.org> Installed-Size: 522 kB Depends: libklibc (= 2.0.4-10) Breaks: initramfs-tools (<< 0.123~) Homepage: https://git.kernel.org/cgit/libs/klibc/klibc.git Download-Size: 107 kB APT-Manual-Installed: no APT-Sources: http://ftp.ports.debian.org/debian-ports unstable/main sparc64 Packages Description: small utilities built with klibc for early boot This package contains a collection of programs that are linked against klibc. These duplicate some of the functionality of a regular Linux toolset, but are typically much smaller than their full-function counterparts. They are intended for inclusion in initramfs images and embedded systems.

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ReviewRequest of a booklet on System Concepts
by Rishi Agrawal Dec. 26, 2017

Dec. 26, 2017

Hi All, I have written this booklet http://sys.readthedocs.io/en/latest/ explaining some concepts related to "glibc and system calls ". This will be useful for the newbies who are learning Linux System Programming. I request the members of the group to kindly review it once and let me know if anything is incorrect or can be written and explained in a better way. If someone wants to add more contents he/she can surely do by raising a "pull request" in the github repo. My apologies if this is not the right group for it as I do not know of any other group with this level of expertise. -- Regards, Rishi Agrawal A simple act of caring creates an endless ripple. Be the change that you wish to see in the world. Be thoroughly used up when you die, for the harder you work, the more you live.

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Unable to compile linux-kernel pulled from nf-next tree
by Harsha Sharma Dec. 19, 2017

Dec. 19, 2017

Hello, I'm working on a task in netfilter and trying to compile linux-kernel pulled from nf-next tree. https://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next.git but fail with these errors. make-- Kernel: arch/x86/boot/bzImage is ready (#4) MODPOST 4905 modules fs/ufs/ufs.o: Invalid argument scripts/Makefile.modpost:92: recipe for target '__modpost' failed make[1]: *** [__modpost] Error 1 Makefile:1211: recipe for target 'modules' failed make: *** [modules] Error 2 sudo make modules_install install-- cp: cannot stat 'net/nsh/nsh.ko': No such file or directory At main.c:291: - SSL error:02001002:system library:fopen:No such file or directory: bss_file.c:175 - SSL error:2006D080:BIO routines:BIO_new_file:no such file: bss_file.c:178 sign-file: /lib/modules/4.14.0-rc8+/kernel/net/nsh/nsh.ko: No such file or directory scripts/Makefile.modinst:36: recipe for target 'net/nsh/nsh.ko' failed make[2]: *** [net/nsh/nsh.ko] Error 1 Makefile:1232: recipe for target '_modinst_' failed make[1]: *** [_modinst_] Error 2 Makefile:527: recipe for target '__build_one_by_one' failed make: *** [__build_one_by_one] Error 2 Any help will be appreciated. Thanks. Regards, Harsha Sharma

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