+-- On Mon, 28 Nov 2016, P J P wrote --+ | +-- On Wed, 16 Nov 2016, Marc-André Lureau wrote --+ | | For completeness, do you have a reproducer and/or a backtrace? | | Yes, there is. | | === | Thread 4 "qemu-system-x86" received signal SIGFPE, Arithmetic exception. | [Switching to Thread 0x7ffff002c700 (LWP 10506)] | 0x000055555599fe2e in cirrus_do_copy (s=0x55555758af60, dst=0, src=0, w=2048, | h=4096) at hw/display/cirrus_vga.c:735 | 735 sx = (src % ABS(s->cirrus_blt_srcpitch)) / depth; | | (gdb) bt | #0 0x000055555599fe2e in cirrus_do_copy (s=0x55555758af60, dst=0, src=0, w=2048, h=4096) at hw/display/cirrus_vga.c:735 | #1 0x00005555559a0134 in cirrus_bitblt_videotovideo_copy (s=0x55555758af60) at hw/display/cirrus_vga.c:793 | #2 0x00005555559a0609 in cirrus_bitblt_videotovideo (s=0x55555758af60) at hw/display/cirrus_vga.c:915 | #3 0x00005555559a0d77 in cirrus_bitblt_start (s=0x55555758af60) at hw/display/cirrus_vga.c:1056 | #4 0x00005555559a1ad3 in cirrus_vga_write_gr (s=0x55555758af60, reg_index=42, reg_value=0) at hw/display/cirrus_vga.c:1572 | #5 0x00005555559a3ad8 in cirrus_vga_ioport_write (opaque=0x55555758af60, addr=975, val=0, size=1) at hw/display/cirrus_vga.c:2678 | #6 0x00005555557a8df7 in memory_region_write_accessor (mr=0x55555759ba50, addr=31, ... | #7 0x00005555557a900f in access_with_adjusted_size (addr=31, value=0x7ffff002b8b8, ... | #8 0x00005555557ab74f in memory_region_dispatch_write (mr=0x55555759ba50, addr=31, ... | #9 0x0000555555757003 in address_space_write_continue (as=0x55555621b5a0 <address_space_io>, ... | #10 0x000055555575714b in address_space_write (as=0x55555621b5a0 <address_space_io>, ... | #11 0x00005555557574d7 in address_space_rw (as=0x55555621b5a0 <address_space_io>, ... | #12 0x00005555557a53d1 in kvm_handle_io (port=975, attrs=..., data=0x7ffff7ff0000, ... | #13 0x00005555557a58d7 in kvm_cpu_exec (cpu=0x555556746f90) | #14 0x000055555578c752 in qemu_kvm_cpu_thread_fn (arg=0x555556746f90) | #15 0x00007ffff5e8d5ca in start_thread () from /lib64/libpthread.so.0 | #16 0x00007ffff5bc70ed in clone () from /lib64/libc.so.6 | === |
Ping..! -- Prasad J Pandit / Red Hat Product Security Team 47AF CE69 3A90 54AA 9045 1053 DD13 3D32 FE5B 041F
