linux_dsm_epyc7002/drivers/gpu/drm/i915
Kees Cook fad953ce0b treewide: Use array_size() in vzalloc()
The vzalloc() function has no 2-factor argument form, so multiplication
factors need to be wrapped in array_size(). This patch replaces cases of:

        vzalloc(a * b)

with:
        vzalloc(array_size(a, b))

as well as handling cases of:

        vzalloc(a * b * c)

with:

        vzalloc(array3_size(a, b, c))

This does, however, attempt to ignore constant size factors like:

        vzalloc(4 * 1024)

though any constants defined via macros get caught up in the conversion.

Any factors with a sizeof() of "unsigned char", "char", and "u8" were
dropped, since they're redundant.

The Coccinelle script used for this was:

// Fix redundant parens around sizeof().
@@
type TYPE;
expression THING, E;
@@

(
  vzalloc(
-	(sizeof(TYPE)) * E
+	sizeof(TYPE) * E
  , ...)
|
  vzalloc(
-	(sizeof(THING)) * E
+	sizeof(THING) * E
  , ...)
)

// Drop single-byte sizes and redundant parens.
@@
expression COUNT;
typedef u8;
typedef __u8;
@@

(
  vzalloc(
-	sizeof(u8) * (COUNT)
+	COUNT
  , ...)
|
  vzalloc(
-	sizeof(__u8) * (COUNT)
+	COUNT
  , ...)
|
  vzalloc(
-	sizeof(char) * (COUNT)
+	COUNT
  , ...)
|
  vzalloc(
-	sizeof(unsigned char) * (COUNT)
+	COUNT
  , ...)
|
  vzalloc(
-	sizeof(u8) * COUNT
+	COUNT
  , ...)
|
  vzalloc(
-	sizeof(__u8) * COUNT
+	COUNT
  , ...)
|
  vzalloc(
-	sizeof(char) * COUNT
+	COUNT
  , ...)
|
  vzalloc(
-	sizeof(unsigned char) * COUNT
+	COUNT
  , ...)
)

// 2-factor product with sizeof(type/expression) and identifier or constant.
@@
type TYPE;
expression THING;
identifier COUNT_ID;
constant COUNT_CONST;
@@

(
  vzalloc(
-	sizeof(TYPE) * (COUNT_ID)
+	array_size(COUNT_ID, sizeof(TYPE))
  , ...)
|
  vzalloc(
-	sizeof(TYPE) * COUNT_ID
+	array_size(COUNT_ID, sizeof(TYPE))
  , ...)
|
  vzalloc(
-	sizeof(TYPE) * (COUNT_CONST)
+	array_size(COUNT_CONST, sizeof(TYPE))
  , ...)
|
  vzalloc(
-	sizeof(TYPE) * COUNT_CONST
+	array_size(COUNT_CONST, sizeof(TYPE))
  , ...)
|
  vzalloc(
-	sizeof(THING) * (COUNT_ID)
+	array_size(COUNT_ID, sizeof(THING))
  , ...)
|
  vzalloc(
-	sizeof(THING) * COUNT_ID
+	array_size(COUNT_ID, sizeof(THING))
  , ...)
|
  vzalloc(
-	sizeof(THING) * (COUNT_CONST)
+	array_size(COUNT_CONST, sizeof(THING))
  , ...)
|
  vzalloc(
-	sizeof(THING) * COUNT_CONST
+	array_size(COUNT_CONST, sizeof(THING))
  , ...)
)

// 2-factor product, only identifiers.
@@
identifier SIZE, COUNT;
@@

  vzalloc(
-	SIZE * COUNT
+	array_size(COUNT, SIZE)
  , ...)

// 3-factor product with 1 sizeof(type) or sizeof(expression), with
// redundant parens removed.
@@
expression THING;
identifier STRIDE, COUNT;
type TYPE;
@@

(
  vzalloc(
-	sizeof(TYPE) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  vzalloc(
-	sizeof(TYPE) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  vzalloc(
-	sizeof(TYPE) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  vzalloc(
-	sizeof(TYPE) * COUNT * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  vzalloc(
-	sizeof(THING) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  vzalloc(
-	sizeof(THING) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  vzalloc(
-	sizeof(THING) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  vzalloc(
-	sizeof(THING) * COUNT * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
)

// 3-factor product with 2 sizeof(variable), with redundant parens removed.
@@
expression THING1, THING2;
identifier COUNT;
type TYPE1, TYPE2;
@@

(
  vzalloc(
-	sizeof(TYPE1) * sizeof(TYPE2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  vzalloc(
-	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  vzalloc(
-	sizeof(THING1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  vzalloc(
-	sizeof(THING1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  vzalloc(
-	sizeof(TYPE1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
  , ...)
|
  vzalloc(
-	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
  , ...)
)

// 3-factor product, only identifiers, with redundant parens removed.
@@
identifier STRIDE, SIZE, COUNT;
@@

(
  vzalloc(
-	(COUNT) * STRIDE * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  vzalloc(
-	COUNT * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  vzalloc(
-	COUNT * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  vzalloc(
-	(COUNT) * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  vzalloc(
-	COUNT * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  vzalloc(
-	(COUNT) * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  vzalloc(
-	(COUNT) * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  vzalloc(
-	COUNT * STRIDE * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
)

// Any remaining multi-factor products, first at least 3-factor products
// when they're not all constants...
@@
expression E1, E2, E3;
constant C1, C2, C3;
@@

(
  vzalloc(C1 * C2 * C3, ...)
|
  vzalloc(
-	E1 * E2 * E3
+	array3_size(E1, E2, E3)
  , ...)
)

// And then all remaining 2 factors products when they're not all constants.
@@
expression E1, E2;
constant C1, C2;
@@

(
  vzalloc(C1 * C2, ...)
|
  vzalloc(
-	E1 * E2
+	array_size(E1, E2)
  , ...)
)

Signed-off-by: Kees Cook <keescook@chromium.org>
2018-06-12 16:19:22 -07:00
..
gvt treewide: Use array_size() in vzalloc() 2018-06-12 16:19:22 -07:00
selftests
dvo_ch7xxx.c
dvo_ch7017.c
dvo_ivch.c
dvo_ns2501.c
dvo_sil164.c
dvo_tfp410.c
dvo.h
i915_cmd_parser.c
i915_debugfs.c
i915_drv.c
i915_drv.h
i915_gem_batch_pool.c
i915_gem_batch_pool.h
i915_gem_clflush.c
i915_gem_clflush.h
i915_gem_context.c
i915_gem_context.h
i915_gem_dmabuf.c
i915_gem_evict.c
i915_gem_execbuffer.c
i915_gem_fence_reg.c
i915_gem_fence_reg.h
i915_gem_gtt.c
i915_gem_gtt.h
i915_gem_internal.c
i915_gem_object.c
i915_gem_object.h
i915_gem_render_state.c
i915_gem_render_state.h
i915_gem_shrinker.c
i915_gem_stolen.c
i915_gem_tiling.c
i915_gem_userptr.c
i915_gem.c
i915_gem.h
i915_gemfs.c
i915_gemfs.h
i915_gpu_error.c
i915_gpu_error.h
i915_ioc32.c
i915_irq.c
i915_memcpy.c
i915_mm.c
i915_oa_bdw.c
i915_oa_bdw.h
i915_oa_bxt.c
i915_oa_bxt.h
i915_oa_cflgt2.c
i915_oa_cflgt2.h
i915_oa_cflgt3.c
i915_oa_cflgt3.h
i915_oa_chv.c
i915_oa_chv.h
i915_oa_cnl.c
i915_oa_cnl.h
i915_oa_glk.c
i915_oa_glk.h
i915_oa_hsw.c
i915_oa_hsw.h
i915_oa_icl.c
i915_oa_icl.h
i915_oa_kblgt2.c
i915_oa_kblgt2.h
i915_oa_kblgt3.c
i915_oa_kblgt3.h
i915_oa_sklgt2.c
i915_oa_sklgt2.h
i915_oa_sklgt3.c
i915_oa_sklgt3.h
i915_oa_sklgt4.c
i915_oa_sklgt4.h
i915_params.c
i915_params.h
i915_pci.c
i915_perf.c
i915_pmu.c
i915_pmu.h
i915_pvinfo.h
i915_query.c
i915_query.h
i915_reg.h
i915_request.c
i915_request.h
i915_scheduler.h
i915_selftest.h
i915_suspend.c
i915_sw_fence.c
i915_sw_fence.h
i915_syncmap.c
i915_syncmap.h
i915_sysfs.c
i915_timeline.c
i915_timeline.h
i915_trace_points.c
i915_trace.h
i915_utils.h
i915_vgpu.c
i915_vgpu.h
i915_vma.c
i915_vma.h
intel_acpi.c
intel_atomic_plane.c
intel_atomic.c
intel_audio.c
intel_bios.c
intel_bios.h
intel_breadcrumbs.c
intel_cdclk.c
intel_color.c
intel_crt.c
intel_csr.c
intel_ddi.c
intel_device_info.c
intel_device_info.h
intel_display.c
intel_display.h
intel_dp_aux_backlight.c
intel_dp_link_training.c
intel_dp_mst.c
intel_dp.c
intel_dpio_phy.c
intel_dpll_mgr.c
intel_dpll_mgr.h
intel_drv.h
intel_dsi_dcs_backlight.c
intel_dsi_pll.c
intel_dsi_vbt.c
intel_dsi.c
intel_dsi.h
intel_dvo.c
intel_engine_cs.c
intel_fbc.c
intel_fbdev.c
intel_fifo_underrun.c
intel_frontbuffer.c
intel_frontbuffer.h
intel_gpu_commands.h
intel_guc_ads.c
intel_guc_ads.h
intel_guc_ct.c
intel_guc_ct.h
intel_guc_fw.c
intel_guc_fw.h
intel_guc_fwif.h
intel_guc_log.c
intel_guc_log.h
intel_guc_reg.h
intel_guc_submission.c
intel_guc_submission.h
intel_guc.c
intel_guc.h
intel_gvt.c
intel_gvt.h
intel_hangcheck.c
intel_hdcp.c
intel_hdmi.c
intel_hotplug.c
intel_huc_fw.c
intel_huc_fw.h
intel_huc.c
intel_huc.h
intel_i2c.c
intel_lpe_audio.c
intel_lrc_reg.h
intel_lrc.c
intel_lrc.h
intel_lspcon.c
intel_lvds.c
intel_mocs.c
intel_mocs.h
intel_modes.c
intel_opregion.c
intel_opregion.h
intel_overlay.c
intel_panel.c
intel_pipe_crc.c
intel_pm.c
intel_psr.c
intel_renderstate_gen6.c
intel_renderstate_gen7.c
intel_renderstate_gen8.c
intel_renderstate_gen9.c
intel_renderstate.h
intel_ringbuffer.c
intel_ringbuffer.h
intel_runtime_pm.c
intel_sdvo_regs.h
intel_sdvo.c
intel_sideband.c
intel_sprite.c
intel_tv.c
intel_uc_fw.c
intel_uc_fw.h
intel_uc.c
intel_uc.h
intel_uncore.c
intel_uncore.h
intel_vbt_defs.h
intel_wopcm.c
intel_wopcm.h
intel_workarounds.c
intel_workarounds.h
Kconfig
Kconfig.debug
Makefile