Commit-ID: ce5f7a99df87918b5be4618a9386213a8e9a7146 Gitweb: http://git.kernel.org/tip/ce5f7a99df87918b5be4618a9386213a8e9a7146 Author: Bobby Powers <bobbypowers@xxxxxxxxx> AuthorDate: Sat, 25 Feb 2012 23:25:38 -0500 Committer: H. Peter Anvin <hpa@xxxxxxxxx> CommitDate: Sat, 25 Feb 2012 20:42:18 -0800 x32: Make sure TS_COMPAT is cleared for x32 tasks If a process has a non-x32 ia32 personality and changes to x32, the process would keep its TS_COMPAT flag. x32 uses the presence of the x32 flag on a syscall to determine compat status, so make sure TS_COMPAT is cleared. Signed-off-by: Bobby Powers <bobbypowers@xxxxxxxxx> Link: http://lkml.kernel.org/r/1330230338-25077-1-git-send-email-bobbypowers@xxxxxxxxx Signed-off-by: H. Peter Anvin <hpa@xxxxxxxxx> --- arch/x86/kernel/process_64.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c index a0701da..32e0412 100644 --- a/arch/x86/kernel/process_64.c +++ b/arch/x86/kernel/process_64.c @@ -540,6 +540,9 @@ void set_personality_ia32(bool x32) clear_thread_flag(TIF_IA32); set_thread_flag(TIF_X32); current->personality &= ~READ_IMPLIES_EXEC; + /* is_compat_task() uses the presence of the x32 + syscall bit flag to determine compat status */ + current_thread_info()->status &= ~TS_COMPAT; } else { set_thread_flag(TIF_IA32); clear_thread_flag(TIF_X32); -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html