tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: b3a9e3b9622ae10064826dccb4f7a52bd88c7407 commit: 80591e61a0f7e88deaada69844e4a31280c4a38f kbuild: tell sparse about the $ARCH date: 7 months ago config: nios2-randconfig-s032-20200615 (attached as .config) compiler: nios2-linux-gcc (GCC) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.2-rc1-3-g55607964-dirty git checkout 80591e61a0f7e88deaada69844e4a31280c4a38f # save the attached .config to linux build tree make W=1 C=1 ARCH=nios2 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <l...@intel.com>
sparse warnings: (new ones prefixed by >>)
>> drivers/video/fbdev/core/fbmem.c:803:39: sparse: sparse: incorrect type in
>> argument 2 (different address spaces) @@ expected void const *s @@
>> got unsigned char [noderef] [usertype] <asn:2> *[assigned] src @@
>> drivers/video/fbdev/core/fbmem.c:803:39: sparse: expected void const *s
drivers/video/fbdev/core/fbmem.c:803:39: sparse: got unsigned char
[noderef] [usertype] <asn:2> *[assigned] src
>> drivers/video/fbdev/core/fbmem.c:880:32: sparse: sparse: incorrect type in
>> argument 1 (different address spaces) @@ expected void *d @@ got
>> unsigned char [noderef] [usertype] <asn:2> *[assigned] dst @@
>> drivers/video/fbdev/core/fbmem.c:880:32: sparse: expected void *d
drivers/video/fbdev/core/fbmem.c:880:32: sparse: got unsigned char
[noderef] [usertype] <asn:2> *[assigned] dst
vim +803 drivers/video/fbdev/core/fbmem.c
c47747fde931c0 drivers/video/fbmem.c Linus Torvalds 2011-05-11 756
c47747fde931c0 drivers/video/fbmem.c Linus Torvalds 2011-05-11 757 static
ssize_t
c47747fde931c0 drivers/video/fbmem.c Linus Torvalds 2011-05-11 758
fb_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
c47747fde931c0 drivers/video/fbmem.c Linus Torvalds 2011-05-11 759 {
c47747fde931c0 drivers/video/fbmem.c Linus Torvalds 2011-05-11 760
unsigned long p = *ppos;
c47747fde931c0 drivers/video/fbmem.c Linus Torvalds 2011-05-11 761
struct fb_info *info = file_fb_info(file);
f11b478d461b71 drivers/video/fbmem.c James Hogan 2010-10-27 762
u8 *buffer, *dst;
f11b478d461b71 drivers/video/fbmem.c James Hogan 2010-10-27 763
u8 __iomem *src;
f11b478d461b71 drivers/video/fbmem.c James Hogan 2010-10-27 764
int c, cnt = 0, err = 0;
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 765
unsigned long total_size;
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 766
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 767
if (!info || ! info->screen_base)
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 768
return -ENODEV;
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 769
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 770
if (info->state != FBINFO_STATE_RUNNING)
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 771
return -EPERM;
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 772
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 773
if (info->fbops->fb_read)
3f9b0880e4a96b drivers/video/fbmem.c Antonino A. Daplas 2007-05-08 774
return info->fbops->fb_read(info, buf, count, ppos);
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 775
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 776
total_size = info->screen_size;
0a484a3af905a2 drivers/video/fbmem.c Antonino A. Daplas 2006-01-09 777
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 778
if (total_size == 0)
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 779
total_size = info->fix.smem_len;
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 780
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 781
if (p >= total_size)
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 782
return 0;
0a484a3af905a2 drivers/video/fbmem.c Antonino A. Daplas 2006-01-09 783
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 784
if (count >= total_size)
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 785
count = total_size;
0a484a3af905a2 drivers/video/fbmem.c Antonino A. Daplas 2006-01-09 786
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 787
if (count + p > total_size)
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 788
count = total_size - p;
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 789
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 790
buffer = kmalloc((count > PAGE_SIZE) ? PAGE_SIZE : count,
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 791
GFP_KERNEL);
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 792
if (!buffer)
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 793
return -ENOMEM;
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 794
f11b478d461b71 drivers/video/fbmem.c James Hogan 2010-10-27 795
src = (u8 __iomem *) (info->screen_base + p);
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 796
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 797
if (info->fbops->fb_sync)
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 798
info->fbops->fb_sync(info);
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 799
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 800
while (count) {
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 801
c = (count > PAGE_SIZE) ? PAGE_SIZE : count;
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 802
dst = buffer;
f11b478d461b71 drivers/video/fbmem.c James Hogan 2010-10-27 @803
fb_memcpy_fromfb(dst, src, c);
f11b478d461b71 drivers/video/fbmem.c James Hogan 2010-10-27 804
dst += c;
f11b478d461b71 drivers/video/fbmem.c James Hogan 2010-10-27 805
src += c;
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 806
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 807
if (copy_to_user(buf, buffer, c)) {
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 808
err = -EFAULT;
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 809
break;
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 810
}
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 811
*ppos += c;
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 812
buf += c;
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 813
cnt += c;
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 814
count -= c;
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 815
}
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 816
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 817
kfree(buffer);
0a484a3af905a2 drivers/video/fbmem.c Antonino A. Daplas 2006-01-09 818
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 819
return (err) ? err : cnt;
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 820 }
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 821
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 822 static
ssize_t
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 823
fb_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 824 {
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 825
unsigned long p = *ppos;
c47747fde931c0 drivers/video/fbmem.c Linus Torvalds 2011-05-11 826
struct fb_info *info = file_fb_info(file);
f11b478d461b71 drivers/video/fbmem.c James Hogan 2010-10-27 827
u8 *buffer, *src;
f11b478d461b71 drivers/video/fbmem.c James Hogan 2010-10-27 828
u8 __iomem *dst;
f11b478d461b71 drivers/video/fbmem.c James Hogan 2010-10-27 829
int c, cnt = 0, err = 0;
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 830
unsigned long total_size;
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 831
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 832
if (!info || !info->screen_base)
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 833
return -ENODEV;
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 834
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 835
if (info->state != FBINFO_STATE_RUNNING)
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 836
return -EPERM;
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 837
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 838
if (info->fbops->fb_write)
3f9b0880e4a96b drivers/video/fbmem.c Antonino A. Daplas 2007-05-08 839
return info->fbops->fb_write(info, buf, count, ppos);
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 840
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 841
total_size = info->screen_size;
0a484a3af905a2 drivers/video/fbmem.c Antonino A. Daplas 2006-01-09 842
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 843
if (total_size == 0)
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 844
total_size = info->fix.smem_len;
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 845
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 846
if (p > total_size)
6a2a88668e90cd drivers/video/fbmem.c Antonino A. Daplas 2006-04-18 847
return -EFBIG;
0a484a3af905a2 drivers/video/fbmem.c Antonino A. Daplas 2006-01-09 848
6a2a88668e90cd drivers/video/fbmem.c Antonino A. Daplas 2006-04-18 849
if (count > total_size) {
6a2a88668e90cd drivers/video/fbmem.c Antonino A. Daplas 2006-04-18 850
err = -EFBIG;
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 851
count = total_size;
6a2a88668e90cd drivers/video/fbmem.c Antonino A. Daplas 2006-04-18 852
}
6a2a88668e90cd drivers/video/fbmem.c Antonino A. Daplas 2006-04-18 853
6a2a88668e90cd drivers/video/fbmem.c Antonino A. Daplas 2006-04-18 854
if (count + p > total_size) {
6a2a88668e90cd drivers/video/fbmem.c Antonino A. Daplas 2006-04-18 855
if (!err)
6a2a88668e90cd drivers/video/fbmem.c Antonino A. Daplas 2006-04-18 856
err = -ENOSPC;
0a484a3af905a2 drivers/video/fbmem.c Antonino A. Daplas 2006-01-09 857
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 858
count = total_size - p;
6a2a88668e90cd drivers/video/fbmem.c Antonino A. Daplas 2006-04-18 859
}
0a484a3af905a2 drivers/video/fbmem.c Antonino A. Daplas 2006-01-09 860
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 861
buffer = kmalloc((count > PAGE_SIZE) ? PAGE_SIZE : count,
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 862
GFP_KERNEL);
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 863
if (!buffer)
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 864
return -ENOMEM;
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 865
f11b478d461b71 drivers/video/fbmem.c James Hogan 2010-10-27 866
dst = (u8 __iomem *) (info->screen_base + p);
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 867
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 868
if (info->fbops->fb_sync)
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 869
info->fbops->fb_sync(info);
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 870
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 871
while (count) {
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 872
c = (count > PAGE_SIZE) ? PAGE_SIZE : count;
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 873
src = buffer;
0a484a3af905a2 drivers/video/fbmem.c Antonino A. Daplas 2006-01-09 874
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 875
if (copy_from_user(src, buf, c)) {
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 876
err = -EFAULT;
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 877
break;
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 878
}
0a484a3af905a2 drivers/video/fbmem.c Antonino A. Daplas 2006-01-09 879
f11b478d461b71 drivers/video/fbmem.c James Hogan 2010-10-27 @880
fb_memcpy_tofb(dst, src, c);
f11b478d461b71 drivers/video/fbmem.c James Hogan 2010-10-27 881
dst += c;
f11b478d461b71 drivers/video/fbmem.c James Hogan 2010-10-27 882
src += c;
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 883
*ppos += c;
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 884
buf += c;
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 885
cnt += c;
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 886
count -= c;
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 887
}
0a484a3af905a2 drivers/video/fbmem.c Antonino A. Daplas 2006-01-09 888
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 889
kfree(buffer);
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 890
6a2a88668e90cd drivers/video/fbmem.c Antonino A. Daplas 2006-04-18 891
return (cnt) ? cnt : err;
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 892 }
^1da177e4c3f41 drivers/video/fbmem.c Linus Torvalds 2005-04-16 893
:::::: The code at line 803 was first introduced by commit
:::::: f11b478d461b7113eb4603b3914aaf15b7788e87 fbmem: fix fb_read, fb_write
unaligned accesses
:::::: TO: James Hogan <ja...@albanarts.com>
:::::: CC: Linus Torvalds <torva...@linux-foundation.org>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org
.config.gz
Description: application/gzip
