mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

[PATCH] fix ia64 syscall auditing 

Attached is a patch against David's audit.17 kernel that adds checks
for the TIF_SYSCALL_AUDIT thread flag to the ia64 system call and
signal handling code paths.  The patch enables auditing of system
calls set up via fsys_bubble_down, as well as ensuring that
audit_syscall_exit() is called on return from sigreturn.

Neglecting to check for TIF_SYSCALL_AUDIT at these points results in
incorrect information in audit_context, causing frequent system panics
when system call auditing is enabled on an ia64 system.

I have tested this patch and have seen no problems with it.

[Original patch from Amy Griffis ported to current kernel by David Woodhouse]

From: Amy Griffis <amy.griffis@hp.com>
From: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Chris Wright <chrisw@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
amy.griffis@hp.com 2005-04-07 11:19:39 -07:00 committed by Greg KH
parent 90aa130583
commit 9150bdc070
2 changed files with 5 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/ia64/kernel/fsys.S
View File

@ -611,8 +611,10 @@ GLOBAL_ENTRY(fsys_bubble_down)
movl r2=ia64_ret_from_syscall
;;
mov rp=r2 // set the real return addr
tbit.z p8,p0=r3,TIF_SYSCALL_TRACE
and r3=_TIF_SYSCALL_TRACEAUDIT,r3
;;
cmp.eq p8,p0=r3,r0
(p10) br.cond.spnt.many ia64_ret_from_syscall // p10==true means out registers are more than 8
(p8) br.call.sptk.many b6=b6 // ignore this return addr
br.cond.sptk ia64_trace_syscall

3
arch/ia64/kernel/signal.c
View File

@ -224,7 +224,8 @@ ia64_rt_sigreturn (struct sigscratch *scr)
* could be corrupted.
*/
retval = (long) &ia64_leave_kernel;
if (test_thread_flag(TIF_SYSCALL_TRACE))
if (test_thread_flag(TIF_SYSCALL_TRACE)
|| test_thread_flag(TIF_SYSCALL_AUDIT))
/*
* strace expects to be notified after sigreturn returns even though the
* context to which we return may not be in the middle of a syscall.