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  • linux-arm
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  • arch
  • h8300
  • kernel
  • ptrace.c
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  • Dave Martin's avatar
    h8300/ptrace: Fix incorrect register transfer count · 502585c7
    Dave Martin authored Mar 27, 2017
    
    
    regs_set() and regs_get() are vulnerable to an off-by-1 buffer overrun
    if CONFIG_CPU_H8S is set, since this adds an extra entry to
    register_offset[] but not to user_regs_struct.
    
    So, iterate over user_regs_struct based on its actual size, not based on
    the length of register_offset[].
    
    Signed-off-by: default avatarDave Martin <Dave.Martin@arm.com>
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    502585c7