The state of this bug is "Fix committed", but the last comments look
like there is still work to do ... should this get reset to "New" or can
we close this bug now?
** Changed in: qemu
Status: Fix Committed => Incomplete
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https://bugs.launchpad.net/bugs/1918302
Title:
qemu-system-arm segfaults while servicing SYS_HEAPINFO
Status in QEMU:
Incomplete
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.
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