RE: [PATCH 5.11 000/252] 5.11.11-rc2 review

[Ronald Warsow]

hello

5.11.11-rc2 compiles, boots and run fine here (on an i7-6700 with Fedora
34 Beta)

Thanks.

but I see some error's/warning's with the new gcc-11.0.1 compared to the
elder gcc-10.2.1-11


In function ‘poly1305_simd_init’,
    inlined from ‘crypto_poly1305_setdctxkey’ at
arch/x86/crypto/poly1305_glue.c:150:4,
    inlined from ‘crypto_poly1305_setdctxkey’ at
arch/x86/crypto/poly1305_glue.c:144:21,
    inlined from ‘poly1305_update_arch’ at
arch/x86/crypto/poly1305_glue.c:181:8:
arch/x86/crypto/poly1305_glue.c:86:9: warning: ‘poly1305_init_x86_64’
reading 32 bytes from a region of size 16 [-Wstringop-overread]
   86 |         poly1305_init_x86_64(ctx, key);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/x86/crypto/poly1305_glue.c: In function ‘poly1305_update_arch’:
arch/x86/crypto/poly1305_glue.c:86:9: note: referencing argument 2 of
type ‘const u8 *’ {aka ‘const unsigned char *’}
arch/x86/crypto/poly1305_glue.c:18:17: note: in a call to function
‘poly1305_init_x86_64’
   18 | asmlinkage void poly1305_init_x86_64(void *ctx,
      |                 ^~~~~~~~~~~~~~~~~~~~
In file included from ./include/linux/bitmap.h:9,
                 from ./include/linux/cpumask.h:12,
                 from ./arch/x86/include/asm/cpumask.h:5,
                 from ./arch/x86/include/asm/msr.h:11,
                 from ./arch/x86/include/asm/processor.h:22,
                 from ./arch/x86/include/asm/cpufeature.h:5,
                 from ./arch/x86/include/asm/thread_info.h:53,
                 from ./include/linux/thread_info.h:59,
                 from ./arch/x86/include/asm/preempt.h:7,
                 from ./include/linux/preempt.h:78,
                 from ./include/linux/rcupdate.h:27,
                 from ./include/linux/rbtree.h:22,
                 from ./include/linux/iova.h:14,
                 from ./include/linux/intel-iommu.h:14,
                 from arch/x86/kernel/tboot.c:9:
In function ‘memcmp’,
    inlined from ‘tboot_probe’ at arch/x86/kernel/tboot.c:70:6:
./include/linux/string.h:283:33: warning: ‘__builtin_memcmp_eq’
specified bound 16 exceeds source size 0 [-Wstringop-overread]
  283 | #define __underlying_memcmp     __builtin_memcmp
      |                                 ^
./include/linux/string.h:488:16: note: in expansion of macro
‘__underlying_memcmp’
  488 |         return __underlying_memcmp(p, q, size);
      |                ^~~~~~~~~~~~~~~~~~~
lib/crypto/poly1305-donna64.c:15:67: warning: argument 2 of type ‘const
u8[16]’ {aka ‘const unsigned char[16]’} with mismatched bound
[-Warray-parameter=]
   15 | void poly1305_core_setkey(struct poly1305_core_key *key, const
u8 raw_key[16])
      | ~~~~~~~~~^~~~~~~~~~~
In file included from lib/crypto/poly1305-donna64.c:11:
./include/crypto/internal/poly1305.h:21:68: note: previously declared as
‘const u8 *’ {aka ‘const unsigned char *’}
   21 | void poly1305_core_setkey(struct poly1305_core_key *key, const
u8 *raw_key);
      | ~~~~~~~~~~^~~~~~~
arch/x86/lib/msr-smp.c:255:51: warning: argument 2 of type ‘u32 *’ {aka
‘unsigned int *’} declared as a pointer [-Warray-parameter=]
  255 | int rdmsr_safe_regs_on_cpu(unsigned int cpu, u32 *regs)
      |                                              ~~~~~^~~~
In file included from ./arch/x86/include/asm/processor.h:22,
                 from ./arch/x86/include/asm/cpufeature.h:5,
                 from ./arch/x86/include/asm/thread_info.h:53,
                 from ./include/linux/thread_info.h:59,
                 from ./arch/x86/include/asm/preempt.h:7,
                 from ./include/linux/preempt.h:78,
                 from arch/x86/lib/msr-smp.c:3:
./arch/x86/include/asm/msr.h:347:50: note: previously declared as an
array ‘u32[8]’ {aka ‘unsigned int[8]’}
  347 | int rdmsr_safe_regs_on_cpu(unsigned int cpu, u32 regs[8]);
      |                                              ~~~~^~~~~~~
arch/x86/lib/msr-smp.c:268:51: warning: argument 2 of type ‘u32 *’ {aka
‘unsigned int *’} declared as a pointer [-Warray-parameter=]
  268 | int wrmsr_safe_regs_on_cpu(unsigned int cpu, u32 *regs)
      |                                              ~~~~~^~~~
In file included from ./arch/x86/include/asm/processor.h:22,
                 from ./arch/x86/include/asm/cpufeature.h:5,
                 from ./arch/x86/include/asm/thread_info.h:53,
                 from ./include/linux/thread_info.h:59,
                 from ./arch/x86/include/asm/preempt.h:7,
                 from ./include/linux/preempt.h:78,
                 from arch/x86/lib/msr-smp.c:3:
./arch/x86/include/asm/msr.h:348:50: note: previously declared as an
array ‘u32[8]’ {aka ‘unsigned int[8]’}
  348 | int wrmsr_safe_regs_on_cpu(unsigned int cpu, u32 regs[8]);
      |                                              ~~~~^~~~~~~
In function ‘snb_wm_latency_quirk’,
    inlined from ‘ilk_setup_wm_latency’ at
drivers/gpu/drm/i915/intel_pm.c:3108:3,
    inlined from ‘intel_init_pm’ at drivers/gpu/drm/i915/intel_pm.c:7650:3:
drivers/gpu/drm/i915/intel_pm.c:3057:9: warning:
‘intel_print_wm_latency’ reading 16 bytes from a region of size 10
[-Wstringop-overread]
 3057 |         intel_print_wm_latency(dev_priv, "Primary",
dev_priv->wm.pri_latency);
      |
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/i915/intel_pm.c: In function ‘intel_init_pm’:
drivers/gpu/drm/i915/intel_pm.c:3057:9: note: referencing argument 3 of
type ‘const u16 *’ {aka ‘const short unsigned int *’}
drivers/gpu/drm/i915/intel_pm.c:2994:13: note: in a call to function
‘intel_print_wm_latency’
 2994 | static void intel_print_wm_latency(struct drm_i915_private
*dev_priv,
      |             ^~~~~~~~~~~~~~~~~~~~~~
In function ‘snb_wm_latency_quirk’,
    inlined from ‘ilk_setup_wm_latency’ at
drivers/gpu/drm/i915/intel_pm.c:3108:3,
    inlined from ‘intel_init_pm’ at drivers/gpu/drm/i915/intel_pm.c:7650:3:
drivers/gpu/drm/i915/intel_pm.c:3058:9: warning:
‘intel_print_wm_latency’ reading 16 bytes from a region of size 10
[-Wstringop-overread]
 3058 |         intel_print_wm_latency(dev_priv, "Sprite",
dev_priv->wm.spr_latency);
      |
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/i915/intel_pm.c: In function ‘intel_init_pm’:
drivers/gpu/drm/i915/intel_pm.c:3058:9: note: referencing argument 3 of
type ‘const u16 *’ {aka ‘const short unsigned int *’}
drivers/gpu/drm/i915/intel_pm.c:2994:13: note: in a call to function
‘intel_print_wm_latency’
 2994 | static void intel_print_wm_latency(struct drm_i915_private
*dev_priv,
      |             ^~~~~~~~~~~~~~~~~~~~~~
In function ‘snb_wm_latency_quirk’,
    inlined from ‘ilk_setup_wm_latency’ at
drivers/gpu/drm/i915/intel_pm.c:3108:3,
    inlined from ‘intel_init_pm’ at drivers/gpu/drm/i915/intel_pm.c:7650:3:
drivers/gpu/drm/i915/intel_pm.c:3059:9: warning:
‘intel_print_wm_latency’ reading 16 bytes from a region of size 10
[-Wstringop-overread]
 3059 |         intel_print_wm_latency(dev_priv, "Cursor",
dev_priv->wm.cur_latency);
      |
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/i915/intel_pm.c: In function ‘intel_init_pm’:
drivers/gpu/drm/i915/intel_pm.c:3059:9: note: referencing argument 3 of
type ‘const u16 *’ {aka ‘const short unsigned int *’}
drivers/gpu/drm/i915/intel_pm.c:2994:13: note: in a call to function
‘intel_print_wm_latency’
 2994 | static void intel_print_wm_latency(struct drm_i915_private
*dev_priv,
      |             ^~~~~~~~~~~~~~~~~~~~~~
In function ‘snb_wm_lp3_irq_quirk’,
    inlined from ‘ilk_setup_wm_latency’ at
drivers/gpu/drm/i915/intel_pm.c:3109:3,
    inlined from ‘intel_init_pm’ at drivers/gpu/drm/i915/intel_pm.c:7650:3:
drivers/gpu/drm/i915/intel_pm.c:3086:9: warning:
‘intel_print_wm_latency’ reading 16 bytes from a region of size 10
[-Wstringop-overread]
 3086 |         intel_print_wm_latency(dev_priv, "Primary",
dev_priv->wm.pri_latency);
      |
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/i915/intel_pm.c: In function ‘intel_init_pm’:
drivers/gpu/drm/i915/intel_pm.c:3086:9: note: referencing argument 3 of
type ‘const u16 *’ {aka ‘const short unsigned int *’}
drivers/gpu/drm/i915/intel_pm.c:2994:13: note: in a call to function
‘intel_print_wm_latency’
 2994 | static void intel_print_wm_latency(struct drm_i915_private
*dev_priv,
      |             ^~~~~~~~~~~~~~~~~~~~~~
In function ‘snb_wm_lp3_irq_quirk’,
    inlined from ‘ilk_setup_wm_latency’ at
drivers/gpu/drm/i915/intel_pm.c:3109:3,
    inlined from ‘intel_init_pm’ at drivers/gpu/drm/i915/intel_pm.c:7650:3:
drivers/gpu/drm/i915/intel_pm.c:3087:9: warning:
‘intel_print_wm_latency’ reading 16 bytes from a region of size 10
[-Wstringop-overread]
 3087 |         intel_print_wm_latency(dev_priv, "Sprite",
dev_priv->wm.spr_latency);
      |
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/i915/intel_pm.c: In function ‘intel_init_pm’:
drivers/gpu/drm/i915/intel_pm.c:3087:9: note: referencing argument 3 of
type ‘const u16 *’ {aka ‘const short unsigned int *’}
drivers/gpu/drm/i915/intel_pm.c:2994:13: note: in a call to function
‘intel_print_wm_latency’
 2994 | static void intel_print_wm_latency(struct drm_i915_private
*dev_priv,
      |             ^~~~~~~~~~~~~~~~~~~~~~
In function ‘snb_wm_lp3_irq_quirk’,
    inlined from ‘ilk_setup_wm_latency’ at
drivers/gpu/drm/i915/intel_pm.c:3109:3,
    inlined from ‘intel_init_pm’ at drivers/gpu/drm/i915/intel_pm.c:7650:3:
drivers/gpu/drm/i915/intel_pm.c:3088:9: warning:
‘intel_print_wm_latency’ reading 16 bytes from a region of size 10
[-Wstringop-overread]
 3088 |         intel_print_wm_latency(dev_priv, "Cursor",
dev_priv->wm.cur_latency);
      |
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/i915/intel_pm.c: In function ‘intel_init_pm’:
drivers/gpu/drm/i915/intel_pm.c:3088:9: note: referencing argument 3 of
type ‘const u16 *’ {aka ‘const short unsigned int *’}
drivers/gpu/drm/i915/intel_pm.c:2994:13: note: in a call to function
‘intel_print_wm_latency’
 2994 | static void intel_print_wm_latency(struct drm_i915_private
*dev_priv,
      |             ^~~~~~~~~~~~~~~~~~~~~~
In function ‘ilk_setup_wm_latency’,
    inlined from ‘intel_init_pm’ at drivers/gpu/drm/i915/intel_pm.c:7650:3:
drivers/gpu/drm/i915/intel_pm.c:3103:9: warning:
‘intel_print_wm_latency’ reading 16 bytes from a region of size 10
[-Wstringop-overread]
 3103 |         intel_print_wm_latency(dev_priv, "Primary",
dev_priv->wm.pri_latency);
      |
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/i915/intel_pm.c: In function ‘intel_init_pm’:
drivers/gpu/drm/i915/intel_pm.c:3103:9: note: referencing argument 3 of
type ‘const u16 *’ {aka ‘const short unsigned int *’}
drivers/gpu/drm/i915/intel_pm.c:2994:13: note: in a call to function
‘intel_print_wm_latency’
 2994 | static void intel_print_wm_latency(struct drm_i915_private
*dev_priv,
      |             ^~~~~~~~~~~~~~~~~~~~~~
In function ‘ilk_setup_wm_latency’,
    inlined from ‘intel_init_pm’ at drivers/gpu/drm/i915/intel_pm.c:7650:3:
drivers/gpu/drm/i915/intel_pm.c:3104:9: warning:
‘intel_print_wm_latency’ reading 16 bytes from a region of size 10
[-Wstringop-overread]
 3104 |         intel_print_wm_latency(dev_priv, "Sprite",
dev_priv->wm.spr_latency);
      |
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/i915/intel_pm.c: In function ‘intel_init_pm’:
drivers/gpu/drm/i915/intel_pm.c:3104:9: note: referencing argument 3 of
type ‘const u16 *’ {aka ‘const short unsigned int *’}
drivers/gpu/drm/i915/intel_pm.c:2994:13: note: in a call to function
‘intel_print_wm_latency’
 2994 | static void intel_print_wm_latency(struct drm_i915_private
*dev_priv,
      |             ^~~~~~~~~~~~~~~~~~~~~~
In function ‘ilk_setup_wm_latency’,
    inlined from ‘intel_init_pm’ at drivers/gpu/drm/i915/intel_pm.c:7650:3:
drivers/gpu/drm/i915/intel_pm.c:3105:9: warning:
‘intel_print_wm_latency’ reading 16 bytes from a region of size 10
[-Wstringop-overread]
 3105 |         intel_print_wm_latency(dev_priv, "Cursor",
dev_priv->wm.cur_latency);
      |
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/i915/intel_pm.c: In function ‘intel_init_pm’:
drivers/gpu/drm/i915/intel_pm.c:3105:9: note: referencing argument 3 of
type ‘const u16 *’ {aka ‘const short unsigned int *’}
drivers/gpu/drm/i915/intel_pm.c:2994:13: note: in a call to function
‘intel_print_wm_latency’
 2994 | static void intel_print_wm_latency(struct drm_i915_private
*dev_priv,
      |             ^~~~~~~~~~~~~~~~~~~~~~
In function ‘intel_dp_check_mst_status’,
    inlined from ‘intel_dp_hpd_pulse’ at
drivers/gpu/drm/i915/display/intel_dp.c:7122:8:
drivers/gpu/drm/i915/display/intel_dp.c:5797:22: warning:
‘drm_dp_channel_eq_ok’ reading 6 bytes from a region of size 4
[-Wstringop-overread]
 5797 |                     !drm_dp_channel_eq_ok(&esi[10],
intel_dp->lane_count)) {
      | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/i915/display/intel_dp.c: In function ‘intel_dp_hpd_pulse’:
drivers/gpu/drm/i915/display/intel_dp.c:5797:22: note: referencing
argument 1 of type ‘const u8 *’ {aka ‘const unsigned char *’}
In file included from drivers/gpu/drm/i915/display/intel_dp.c:38:
./include/drm/drm_dp_helper.h:1267:6: note: in a call to function
‘drm_dp_channel_eq_ok’
 1267 | bool drm_dp_channel_eq_ok(const u8
link_status[DP_LINK_STATUS_SIZE],
      |      ^~~~~~~~~~~~~~~~~~~~



--
regards

Ronald