[Buildroot] [PATCH 2/2] configs/qemu_arm_vexpress_defconfig: increase SD card image size to 64MiB

Peter Korsgaard peter at korsgaard.com
Tue Nov 10 20:16:14 UTC 2020


>>>>> "Romain" == Romain Naour <romain.naour at gmail.com> writes:

 > Since Qemu 5.1, this defconfig doesn't boot due to the to small SD card image size (60MB).
 > qemu-system-arm: sd_init failed: Invalid SD card size: 60 MiB
 > SD card size has to be a power of 2, e.g. 64 MiB.
 > You can resize disk images with 'qemu-img resize <imagefile> <new-size>'
 > (note that this will lose data if you make the image smaller than it currently is).
 > qemu-system-arm: sd_init failed

 > From [1]:
 > "While the possibility to use small SD card images has been seen as
 > a feature, it became a bug with CVE-2020-13253, where the guest is
 > able to do OOB read/write accesses past the image size end."

 > The qemu_arm_vexpress_tz_defconfig doesn't trigger such issue since
 > it doesn't use the same filesystem support (i.e doesn't use
 > -drive file=output/images/rootfs.ext2,if=sd,format=raw).

 > Fixes:
 > https://gitlab.com/kubu93/buildroot/-/jobs/766482935

 > [1] https://git.qemu.org/?p=qemu.git;a=commitdiff;h=a9bcedd15a5834ca9ae6c3a97933e85ac7edbd36

 > Signed-off-by: Romain Naour <romain.naour at gmail.com>

Committed, thanks.

-- 
Bye, Peter Korsgaard



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