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[Qemu-devel] [REGRESSION] mprotect in guest makes qemu-i386 crash
From: |
Jan Kiszka |
Subject: |
[Qemu-devel] [REGRESSION] mprotect in guest makes qemu-i386 crash |
Date: |
Thu, 03 Jul 2008 17:13:53 +0200 |
User-agent: |
Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv:1.8.1.12) Gecko/20080226 SUSE/2.0.0.12-1.1 Thunderbird/2.0.0.12 Mnenhy/0.7.5.666 |
Hi,
this fragment from a code self-modification test of mine used to work a
few weeks ago with qemu-i386 userspace emulation. Now it causes a segfault.
#include <sys/mman.h>
main()
{
mprotect((void *)((unsigned long)main & ~0xfff), 0x1000,
PROT_READ|PROT_WRITE|PROT_EXEC);
}
qemu-x86_64 even complains about an "Unsupported syscall: 221", while
the same 64-bit binary works fine with 0.9.1 (I don't recall anymore if
it worked recently with SVN head).
Anyone some idea? Known issue?
Jan
--
Siemens AG, Corporate Technology, CT SE 2
Corporate Competence Center Embedded Linux
- [Qemu-devel] [REGRESSION] mprotect in guest makes qemu-i386 crash,
Jan Kiszka <=