6b4b63a571
Recently in Buildroot the option BR2_PIC_PIE has been enabled by default along
with other hardening features [1]. Since then the nios2 defconfig
qemu_nios2_10m50_defconfig is failing to boot due to a segfault in init program:
Run /init as init process
with arguments:
/init
with environment:
HOME=/
TERM=linux
Failed to execute /init (error -12)
See Buildroot build log and Qemu runtime test log in build artifacts [2].
Analyzing one of the binary with strace show that the problem occur
very early when starting the new process:
# strace ./busybox
execve("./busybox", ["./busybox"], 0x7f91ce90 /* 10 vars */) = -1 ENOMEM
(Cannot allocate memory)
+++ killed by SIGSEGV +++
Several binutils/glibc/gcc version has been tested without any success.
The issue has been reported to the glibc mailing list but it can be a linker
or kernel bug [3].
For the Buildroot 2021.05 release, disable BR2_PIC_PIE until the problem is
found and fixed.
Fixes:
https://gitlab.com/buildroot.org/buildroot/-/jobs/1285145889
[1] https://git.buildroot.net/buildroot/commit/?id=810ba387bec3c5b6904e8893fb4cb6f9d3717466
[2] https://gitlab.com/buildroot.org/buildroot/-/jobs/1285145889
[3] https://sourceware.org/pipermail/libc-alpha/2021-May/126912.html
Signed-off-by: Romain Naour <romain.naour@gmail.com>
Cc: Yann E. MORIN <yann.morin.1998@free.fr>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Buildroot is a simple, efficient and easy-to-use tool to generate embedded Linux systems through cross-compilation. The documentation can be found in docs/manual. You can generate a text document with 'make manual-text' and read output/docs/manual/manual.text. Online documentation can be found at http://buildroot.org/docs.html To build and use the buildroot stuff, do the following: 1) run 'make menuconfig' 2) select the target architecture and the packages you wish to compile 3) run 'make' 4) wait while it compiles 5) find the kernel, bootloader, root filesystem, etc. in output/images You do not need to be root to build or run buildroot. Have fun! Buildroot comes with a basic configuration for a number of boards. Run 'make list-defconfigs' to view the list of provided configurations. Please feed suggestions, bug reports, insults, and bribes back to the buildroot mailing list: buildroot@buildroot.org You can also find us on #buildroot on OFTC IRC. If you would like to contribute patches, please read https://buildroot.org/manual.html#submitting-patches