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From: Konstantin Belousov <kib@FreeBSD.org>
Date: Thu, 27 Jan 2011 21:45:38 +0000 (UTC)
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Subject: cvs commit: src/sys/amd64/linux32 linux.h
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kib         2011-01-27 21:45:38 UTC

  FreeBSD src repository

  Modified files:
    sys/amd64/linux32    linux.h 
  Log:
  SVN rev 217991 on 2011-01-27 21:45:38Z by kib
  
  linux_sigreturn() loads the struct trapframe from l_sigcontext
  members, thus making a signed extension of 32 bit register
  context. If the register is not touched in usermode between
  return from signal and next syscall entry, the sign-extension
  part of 64bit register is not cleared, causing
  linux32_fetch_syscall_args() to read wrong values.
  
  Use unsigned type for the registers in the linux sigcontext.
  
  Reported by:    Jacob Frelinger <jacob.frelinger duke edu>, arundel
  In collaboration with:  dchagin
  MFC after:      1 week
  
  Revision  Changes    Path
  1.31      +22 -22    src/sys/amd64/linux32/linux.h