** Changed in: qemu
Status: Fix Committed => Fix Released
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Title:
qemu-aarch64-static "Illegal instruction" with debootstrap
Status in Q
Fix commit: 52c01ada8661 ("exec: Fix overlap of PAGE_ANON and
PAGE_TARGET_1")
** Changed in: qemu
Status: In Progress => Fix Committed
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Ti
Ouch, yes indeed. Will fix.
** Changed in: qemu
Status: New => In Progress
** Changed in: qemu
Assignee: (unassigned) => Richard Henderson (rth)
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Perhaps the reason is:
include/exec/cpu-all.h
#define PAGE_ANON 0x0080
...
#define PAGE_TARGET_1 0x0080
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Title:
qemu-aarch64-static "Ill
commit be5d6f4884021208ae0e73379c83e51500ad3a8d
Author: Richard Henderson
Date: Wed Oct 21 10:37:39 2020 -0700
linux-user: Set PAGE_TARGET_1 for TARGET_PROT_BTI
Transform the prot bit to a qemu internal page bit, and save
it in the page tables.
Reviewed-by: Peter Mayde
Yes, applying the patch pointed out by Philippe doesn't fix the problem.
But I think bisect has worked fine.
If I revert this patch (26bab757d41), it works fine again.
I revert:
"target/arm: Add allocation tag storage for user mode"
"linux-user: Introduce PAGE_ANON"
Only reverting the first p
The fix that Phil links would only pertain if debootstrap were
actively using MTE. I think we can safely disregard that.
I don't believe that the bisect has worked. There is nothing in
that 3 line patch that would affect *anything*, as the PAGE_ANON
value is not used at this point.
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Possible fix:
https://www.mail-archive.com/qemu-devel@nongnu.org/msg796781.html
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Title:
qemu-aarch64-static "Illegal instruction" with debootstr
Bisected to
commit 26bab757d41b853ea84cb52a10fafc9c10069658
Author: Richard Henderson
Date: Fri Feb 12 10:48:33 2021 -0800
linux-user: Introduce PAGE_ANON
Record whether the backing page is anonymous, or if it has file
backing. This will allow us to get close to the Linux AAr
I'm able to reproduce a coredump o("Illegal Instruction", but of host
type) during a debootstrap process. The coredump is for a grep process,
I'm trying to bisect.
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** Tags added: linux-user
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Title:
qemu-aarch64-static "Illegal instruction" with debootstrap
Status in QEMU:
New
Bug description:
This is
This won't be the cause of the crash, but: don't run ninja directly. The
build instructions (documented in README.rst) haven't changed: run
configure, and then run make. The makefile still does some things and is
not a pure does-absolutely-nothing wrapper around ninja in all cases.
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