[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [PATCH 0/7] x86/ubsan: fix ubsan on clang + code fixes
Hello, This started as a series to fix UBSAN when using clang, and the first 2 patches do fix that. Patch 3 fix an issue when using UBSAN on gcc 12. Patch 4 improves the reporting of clang UB pointer arithmetics. Finally patches 5 and 6 fix bugs in the code highlighted by the clang UB pointer arithmetic detection: offset additions to NULL pointers and too early usage of ioremap_wc(). Patch 7 was the original goal of the series: be able to enable UBSAN for randconfig. Thanks, Roger. Roger Pau Monne (7): xen/ubsan: provide helper for clang's -fsanitize=function x86/wait: prevent duplicated assembly labels x86/dom0: placate GCC 12 compile-time errors with UBSAN and PVH_GUEST xen/ubsan: expand pointer overflow message printing x86/ioremap: prevent additions against the NULL pointer x86/vga: fix mapping of the VGA text buffer kconfig/randconfig: enable UBSAN for randconfig xen/Kconfig | 4 ++ xen/Kconfig.debug | 2 +- xen/arch/x86/boot/x86_64.S | 10 ++- xen/arch/x86/dmi_scan.c | 7 +- xen/arch/x86/include/asm/config.h | 5 ++ xen/arch/x86/mm.c | 6 +- xen/arch/x86/setup.c | 2 +- xen/common/ubsan/ubsan.c | 31 +++++++- xen/common/ubsan/ubsan.h | 5 ++ xen/common/wait.c | 111 ++++++++++++++++++++--------- xen/drivers/video/vga.c | 11 ++- xen/tools/kconfig/allrandom.config | 1 - 12 files changed, 144 insertions(+), 51 deletions(-) -- 2.48.1
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