Testing with: Subject: [PATCH v5 0/5] semihosting/next (SYS_HEAPINFO) Date: Fri, 12 Mar 2021 10:20:24 +0000 Message-Id: <20210312102029.17017-1-alex.ben...@linaro.org>
it doesn't seem to segfault QEMU anymore although the guest itself hangs which probably means it's not happy with the numbers it got. -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1918302 Title: qemu-system-arm segfaults while servicing SYS_HEAPINFO Status in QEMU: In Progress Bug description: I compiled QEMU version 5.2.0 from source on Ubuntu 18.04, and tried to use it to run the attached bare-metal Arm hello-world image, using the command line qemu-system-arm -M microbit -semihosting -nographic -device loader,file=hello.hex The result was that qemu-system-arm itself died of a segfault. Compiling it for debugging, the location of the segfault was in target/arm/arm-semi.c, in the case handler for the semihosting call TARGET_SYS_HEAPINFO, on line 1020 which assigns to 'rambase': const struct arm_boot_info *info = env->boot_info; target_ulong rambase = info->loader_start; and the problem seems to be that 'info', aka env->boot_info, is NULL in this context. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1918302/+subscriptions
