LoongArch: Give more information if kmem access failed

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If memory access such as copy_{from, to}_kernel_nofault() failed, its
users do not know what happened, so it is very useful to print the
exception code for such cases. Furthermore, it is better to print the
caller function to know where is the entry.

Here are the low level call chains:

  copy_from_kernel_nofault()
    copy_from_kernel_nofault_loop()
      __get_kernel_nofault()

  copy_to_kernel_nofault()
    copy_to_kernel_nofault_loop()
      __put_kernel_nofault()

Cc: stable@vger.kernel.org
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

...

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Tiezhu Yang 2026-03-16 10:36:01 +08:00 • committed by Huacai Chen

parent 8a69d02481

commit a47f0754bd

1 changed files with 12 additions and 2 deletions

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14

arch/loongarch/include/asm/uaccess.h

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