[FS#3277] malta/mipseb64:

[OpenWrt Bugs]

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The following task has a new comment added:

FS#3277 - malta/mipseb64:
User who did this - Tony Ambardar (guidosarducci)

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As another experiment I configured init as /bin/sh to test some basic functions:

qemu-system-mips64 -M malta -kernel bpf-openwrt-malta-be64-vmlinux.elf \
-drive file=bpf-openwrt-malta-be64-rootfs-ext4.img,index=0,media=disk \
-nographic -m 512 -append "root=/dev/sda rootfstype=ext4 init=/bin/sh"

[...]

[    0.724245] Freeing unused kernel memory: 252K
[    0.724501] This architecture does not have kernel memory protection.
[    0.724920] Run /bin/sh as init process


BusyBox v1.31.1 () built-in shell (ash)

/bin/sh: can't access tty; job control turned off
[   22.326975] random: fast init done
/ #
/ # echo *
bin dev etc init lib lib64 lost+found mnt overlay proc rom root sbin sys tmp usr var www
/ #
/ # ls
[   35.314543] do_page_fault(): sending SIGSEGV to ls for invalid read access from 0000000000000360
[   35.314858] epc = 0000000000000360 in busybox[120000000+82000]
[   35.315434] ra  = 000000fffeb105f0 in
Segmentation fault
/ #

While shell builtins appear to work, commands that require fork/exec are yielding the same SIGSEGV fault. Looks like something very wrong with this system.
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More information can be found at the following URL:
https://bugs.openwrt.org/index.php?do=details&task_id=3277#comment8652

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