From 785b3f667b4bf98804cad135005e964df0c750de Mon Sep 17 00:00:00 2001 From: Andrzej Hajda Date: Tue, 11 Jul 2023 17:34:10 +0200 Subject: drm/i915/perf: add sentinel to xehp_oa_b_counters Arrays passed to reg_in_range_table should end with empty record. The patch solves KASAN detected bug with signature: BUG: KASAN: global-out-of-bounds in xehp_is_valid_b_counter_addr+0x2c7/0x350 [i915] Read of size 4 at addr ffffffffa1555d90 by task perf/1518 CPU: 4 PID: 1518 Comm: perf Tainted: G U 6.4.0-kasan_438-g3303d06107f3+ #1 Hardware name: Intel Corporation Meteor Lake Client Platform/MTL-P DDR5 SODIMM SBS RVP, BIOS MTLPFWI1.R00.3223.D80.2305311348 05/31/2023 Call Trace: ... xehp_is_valid_b_counter_addr+0x2c7/0x350 [i915] Fixes: 0fa9349dda03 ("drm/i915/perf: complete programming whitelisting for XEHPSDV") Signed-off-by: Andrzej Hajda Reviewed-by: Andi Shyti Reviewed-by: Nirmoy Das Link: https://patchwork.freedesktop.org/patch/msgid/20230711153410.1224997-1-andrzej.hajda@intel.com (cherry picked from commit 2f42c5afb34b5696cf5fe79e744f99be9b218798) Signed-off-by: Tvrtko Ursulin --- drivers/gpu/drm/i915/i915_perf.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/i915/i915_perf.c b/drivers/gpu/drm/i915/i915_perf.c index 7413c11fb562..49c6f1ff1128 100644 --- a/drivers/gpu/drm/i915/i915_perf.c +++ b/drivers/gpu/drm/i915/i915_perf.c @@ -4431,6 +4431,7 @@ static const struct i915_range mtl_oam_b_counters[] = { static const struct i915_range xehp_oa_b_counters[] = { { .start = 0xdc48, .end = 0xdc48 }, /* OAA_ENABLE_REG */ { .start = 0xdd00, .end = 0xdd48 }, /* OAG_LCE0_0 - OAA_LENABLE_REG */ + {} }; static const struct i915_range gen7_oa_mux_regs[] = { -- cgit From 2c27770a7bc88ef7f6614d11d96d8e62017d0b78 Mon Sep 17 00:00:00 2001 From: Jani Nikula Date: Tue, 11 Jul 2023 14:02:14 +0300 Subject: Revert "drm/i915: use localized __diag_ignore_all() instead of per file" This reverts commit 88e9664434c994e97a9f6f8cdd1535495c660cea. __diag_ignore_all() only works for GCC 8 or later. -Woverride-init (from -Wextra, enabled in i915 Makefile) combined with CONFIG_WERROR=y or W=e breaks the build for older GCC. With i386_defconfig and x86_64_defconfig enabling CONFIG_WERROR=y by default, we really need to roll back the change. An alternative would be to disable -Woverride-init in the Makefile for GCC <8, but the revert seems like the safest bet now. Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/8768 Reported-by: John Garry References: https://lore.kernel.org/r/ad2601c0-84bb-c574-3702-a83ff8faf98c@oracle.com References: https://lore.kernel.org/r/87wmzezns4.fsf@intel.com Fixes: 88e9664434c9 ("drm/i915: use localized __diag_ignore_all() instead of per file") Cc: Gustavo Sousa Cc: Joonas Lahtinen Cc: Rodrigo Vivi Cc: Tvrtko Ursulin Signed-off-by: Jani Nikula Reviewed-by: Gustavo Sousa Tested-by: John Garry Link: https://patchwork.freedesktop.org/patch/msgid/20230711110214.25093-1-jani.nikula@intel.com (cherry picked from commit 290d161045753240f2100b8f44660426ecc97be5) Signed-off-by: Tvrtko Ursulin --- drivers/gpu/drm/i915/Makefile | 5 +++++ drivers/gpu/drm/i915/display/intel_display_device.c | 5 ----- drivers/gpu/drm/i915/display/intel_fbdev.c | 5 ----- drivers/gpu/drm/i915/i915_pci.c | 5 ----- 4 files changed, 5 insertions(+), 15 deletions(-) diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile index 789dce9e2608..dcbda9ba32dd 100644 --- a/drivers/gpu/drm/i915/Makefile +++ b/drivers/gpu/drm/i915/Makefile @@ -23,6 +23,11 @@ subdir-ccflags-y += $(call cc-option, -Wunused-but-set-variable) subdir-ccflags-y += $(call cc-disable-warning, frame-address) subdir-ccflags-$(CONFIG_DRM_I915_WERROR) += -Werror +# Fine grained warnings disable +CFLAGS_i915_pci.o = $(call cc-disable-warning, override-init) +CFLAGS_display/intel_display_device.o = $(call cc-disable-warning, override-init) +CFLAGS_display/intel_fbdev.o = $(call cc-disable-warning, override-init) + subdir-ccflags-y += -I$(srctree)/$(src) # Please keep these build lists sorted! diff --git a/drivers/gpu/drm/i915/display/intel_display_device.c b/drivers/gpu/drm/i915/display/intel_display_device.c index 3fd30e7f0062..f0ee9bcf661d 100644 --- a/drivers/gpu/drm/i915/display/intel_display_device.c +++ b/drivers/gpu/drm/i915/display/intel_display_device.c @@ -16,9 +16,6 @@ #include "intel_display_reg_defs.h" #include "intel_fbc.h" -__diag_push(); -__diag_ignore_all("-Woverride-init", "Allow overriding inherited members"); - static const struct intel_display_device_info no_display = {}; #define PIPE_A_OFFSET 0x70000 @@ -665,8 +662,6 @@ static const struct intel_display_device_info xe_lpdp_display = { BIT(TRANSCODER_C) | BIT(TRANSCODER_D), }; -__diag_pop(); - #undef INTEL_VGA_DEVICE #undef INTEL_QUANTA_VGA_DEVICE #define INTEL_VGA_DEVICE(id, info) { id, info } diff --git a/drivers/gpu/drm/i915/display/intel_fbdev.c b/drivers/gpu/drm/i915/display/intel_fbdev.c index 1cc0ddc6a310..80c3f88310db 100644 --- a/drivers/gpu/drm/i915/display/intel_fbdev.c +++ b/drivers/gpu/drm/i915/display/intel_fbdev.c @@ -135,9 +135,6 @@ static int intel_fbdev_mmap(struct fb_info *info, struct vm_area_struct *vma) return i915_gem_fb_mmap(obj, vma); } -__diag_push(); -__diag_ignore_all("-Woverride-init", "Allow overriding the default ops"); - static const struct fb_ops intelfb_ops = { .owner = THIS_MODULE, __FB_DEFAULT_DEFERRED_OPS_RDWR(intel_fbdev), @@ -149,8 +146,6 @@ static const struct fb_ops intelfb_ops = { .fb_mmap = intel_fbdev_mmap, }; -__diag_pop(); - static int intelfb_alloc(struct drm_fb_helper *helper, struct drm_fb_helper_surface_size *sizes) { diff --git a/drivers/gpu/drm/i915/i915_pci.c b/drivers/gpu/drm/i915/i915_pci.c index 3d7a5db9833b..928975d5fe2f 100644 --- a/drivers/gpu/drm/i915/i915_pci.c +++ b/drivers/gpu/drm/i915/i915_pci.c @@ -38,9 +38,6 @@ #include "i915_reg.h" #include "intel_pci_config.h" -__diag_push(); -__diag_ignore_all("-Woverride-init", "Allow overriding inherited members"); - #define PLATFORM(x) .platform = (x) #define GEN(x) \ .__runtime.graphics.ip.ver = (x), \ @@ -846,8 +843,6 @@ static const struct intel_device_info mtl_info = { #undef PLATFORM -__diag_pop(); - /* * Make sure any device matches here are from most specific to most * general. For example, since the Quanta match is based on the subsystem -- cgit