riscv/qemu: QEMU main repository: Please see https://www.qemu.org/docs/master/devel/submitting-a-patch.html for how to submit changes to QEMU. Pull Requests are ignored. Please only use release tarballs from the QEMU website. http://www.qemu.org - qemu

QEMU main repository: Please see https://www.qemu.org/docs/master/devel/submitting-a-patch.html for how to submit changes to QEMU. Pull Requests are ignored. Please only use release tarballs from the QEMU website. http://www.qemu.org

emulation kvm qemu virtualization

History

Simon Gaiser 2e63eb2bec xen/pt: Set is_express to avoid out-of-bounds write The passed-through device might be an express device. In this case the old code allocated a too small emulated config space in pci_config_alloc() since pci_config_size() returned the size for a non-express device. This leads to an out-of-bound write in xen_pt_config_reg_init(), which sometimes results in crashes. So set is_express as already done for KVM in vfio-pci. Shortened ASan report: ==17512==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x611000041648 at pc 0x55e0fdac51ff bp 0x7ffe4af07410 sp 0x7ffe4af07408 WRITE of size 2 at 0x611000041648 thread T0 #0 0x55e0fdac51fe in memcpy /usr/include/x86_64-linux-gnu/bits/string3.h:53 #1 0x55e0fdac51fe in stw_he_p include/qemu/bswap.h:330 #2 0x55e0fdac51fe in stw_le_p include/qemu/bswap.h:379 #3 0x55e0fdac51fe in pci_set_word include/hw/pci/pci.h:490 #4 0x55e0fdac51fe in xen_pt_config_reg_init hw/xen/xen_pt_config_init.c:1991 #5 0x55e0fdac51fe in xen_pt_config_init hw/xen/xen_pt_config_init.c:2067 #6 0x55e0fdabcf4d in xen_pt_realize hw/xen/xen_pt.c:830 #7 0x55e0fdf59666 in pci_qdev_realize hw/pci/pci.c:2034 #8 0x55e0fdda7d3d in device_set_realized hw/core/qdev.c:914 [...] 0x611000041648 is located 8 bytes to the right of 256-byte region [0x611000041540,0x611000041640) allocated by thread T0 here: #0 0x7ff596a94bb8 in __interceptor_calloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xd9bb8) #1 0x7ff57da66580 in g_malloc0 (/lib/x86_64-linux-gnu/libglib-2.0.so.0+0x50580) #2 0x55e0fdda7d3d in device_set_realized hw/core/qdev.c:914 [...] Signed-off-by: Simon Gaiser <hw42@ipsumj.de> Acked-by: Stefano Stabellini <sstabellini@kernel.org> Signed-off-by: Stefano Stabellini <sstabellini@kernel.org>		9 years ago
..
Makefile.objs	pci-assign: Remove	9 years ago
trace-events	trace-events: fix code style: %# -> 0x%	9 years ago
xen-common.c	migration: move skip_section_footers	9 years ago
xen-host-pci-device.c	util: move declarations out of qemu-common.h	11 years ago
xen-host-pci-device.h	Clean up decorations and whitespace around header guards	10 years ago
xen_backend.c	xen: add a global indicator for grant copy being available	9 years ago
xen_devconfig.c	xen: Rename xen_be_printf to xen_pv_printf	10 years ago
xen_pt.c	xen/pt: Set is_express to avoid out-of-bounds write	9 years ago
xen_pt.h	xen/pt: allow QEMU to request MSI unmasking at bind time	9 years ago
xen_pt_config_init.c	xen/pt: allow QEMU to request MSI unmasking at bind time	9 years ago
xen_pt_graphics.c	include/qemu/osdep.h: Don't include qapi/error.h	11 years ago
xen_pt_load_rom.c	pci-assign: Remove	9 years ago
xen_pt_msi.c	xen/pt: allow QEMU to request MSI unmasking at bind time	9 years ago
xen_pvdev.c	xen: create qdev for each backend device	10 years ago