07.05.2010 00:07, Michael Tokarev wrote:
There was a bug recently fixed in vnc code. Apparently there's something similar in the cirrus emulation as well. Here it triggers _always_ (including old versions of kvm) when running windows NT and hitting "test" button in its display resolution dialog. Here's what gdb is to say: Program received signal SIGFPE, Arithmetic exception. [Switching to Thread 0xf76cab70 (LWP 580)] 0x080c5e45 in cirrus_do_copy (s=0x86134dc, dst=960000, src=0, w=2, h=9) at hw/cirrus_vga.c:687 687 sx = (src % ABS(s->cirrus_blt_srcpitch)) / depth; (gdb) p s->cirrus_blt_srcpitch $2 = 0
[]
This qemu-kvm-0.12.3 - actually a debian package of it, but there's no patches relevant to video applied.
I just tried current qemu-kvm/master, it crashes at exactly the same place: Program received signal SIGFPE, Arithmetic exception. [Switching to Thread 0xf79dfb70 (LWP 10840)] 0x0821b4ca in cirrus_do_copy (s=0x85dc7ac) at hw/cirrus_vga.c:687 687 sx = (src % ABS(s->cirrus_blt_srcpitch)) / depth; (gdb) bt #0 0x0821b4ca in cirrus_do_copy (s=0x85dc7ac) at hw/cirrus_vga.c:687 #1 cirrus_bitblt_videotovideo_copy (s=0x85dc7ac) at hw/cirrus_vga.c:748 #2 cirrus_bitblt_videotovideo (s=0x85dc7ac) at hw/cirrus_vga.c:870 #3 cirrus_bitblt_start (s=0x85dc7ac) at hw/cirrus_vga.c:1011 #4 0x0821d009 in cirrus_vga_mem_writel (opaque=0x85dc7ac, addr=98320, val=960000) at hw/cirrus_vga.c:2120 #5 0x0811d147 in cpu_physical_memory_rw (addr=753680, buf=0xf7fdc390 "", len=4, is_write=1) at exec.c:3475 #6 0x0807b462 in cpu_physical_memory_write () at cpu-common.h:67 #7 kvm_flush_coalesced_mmio_buffer () at kvm-all.c:808 #8 0x0807cc2e in kvm_run (env=0x84c4650) at qemu-kvm.c:575 #9 0x0807d10c in kvm_cpu_exec (env=0x84c4650) at qemu-kvm.c:1192 #10 0x0807ec0a in kvm_main_loop_cpu (_env=0x84c4650) at qemu-kvm.c:1449 #11 ap_main_loop (_env=0x84c4650) at qemu-kvm.c:1495 #12 0xf7fad3d0 in start_thread () from /lib/libpthread.so.0 #13 0xf7cbf10e in clone () from /lib/libc.so.6
Anything can be done with it? Thanks!
/mjt -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html