aboutsummaryrefslogtreecommitdiffstats
path: root/arch
diff options
context:
space:
mode:
authorJan Beulich <JBeulich@suse.com>2013-01-30 02:55:53 -0500
committerIngo Molnar <mingo@kernel.org>2013-01-31 04:36:01 -0500
commit40a1ef95da85843696fc3ebe5fce39b0db32669f (patch)
treee78e1ac0a682f60a1a4fccf02fa2d4addc54987c /arch
parente0094244e41c4d0c7ad69920681972fc45d8ce34 (diff)
x86-64: Replace left over sti/cli in ia32 audit exit code
For some reason they didn't get replaced so far by their paravirt equivalents, resulting in code to be run with interrupts disabled that doesn't expect so (causing, in the observed case, a BUG_ON() to trigger) when syscall auditing is enabled. David (Cc-ed) came up with an identical fix, so likely this can be taken to count as an ack from him. Reported-by: Peter Moody <pmoody@google.com> Signed-off-by: Jan Beulich <jbeulich@suse.com> Cc: David Vrabel <david.vrabel@citrix.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Link: http://lkml.kernel.org/r/5108E01902000078000BA9C5@nat28.tlf.novell.com Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: stable@vger.kernel.org Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: David Vrabel <david.vrabel@citrix.com> Tested-by: Peter Moody <pmoody@google.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/ia32/ia32entry.S4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/ia32/ia32entry.S b/arch/x86/ia32/ia32entry.S
index 102ff7cb3e41..142c4ceff112 100644
--- a/arch/x86/ia32/ia32entry.S
+++ b/arch/x86/ia32/ia32entry.S
@@ -207,7 +207,7 @@ sysexit_from_sys_call:
207 testl $(_TIF_ALLWORK_MASK & ~_TIF_SYSCALL_AUDIT),TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET) 207 testl $(_TIF_ALLWORK_MASK & ~_TIF_SYSCALL_AUDIT),TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET)
208 jnz ia32_ret_from_sys_call 208 jnz ia32_ret_from_sys_call
209 TRACE_IRQS_ON 209 TRACE_IRQS_ON
210 sti 210 ENABLE_INTERRUPTS(CLBR_NONE)
211 movl %eax,%esi /* second arg, syscall return value */ 211 movl %eax,%esi /* second arg, syscall return value */
212 cmpl $-MAX_ERRNO,%eax /* is it an error ? */ 212 cmpl $-MAX_ERRNO,%eax /* is it an error ? */
213 jbe 1f 213 jbe 1f
@@ -217,7 +217,7 @@ sysexit_from_sys_call:
217 call __audit_syscall_exit 217 call __audit_syscall_exit
218 movq RAX-ARGOFFSET(%rsp),%rax /* reload syscall return value */ 218 movq RAX-ARGOFFSET(%rsp),%rax /* reload syscall return value */
219 movl $(_TIF_ALLWORK_MASK & ~_TIF_SYSCALL_AUDIT),%edi 219 movl $(_TIF_ALLWORK_MASK & ~_TIF_SYSCALL_AUDIT),%edi
220 cli 220 DISABLE_INTERRUPTS(CLBR_NONE)
221 TRACE_IRQS_OFF 221 TRACE_IRQS_OFF
222 testl %edi,TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET) 222 testl %edi,TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET)
223 jz \exit 223 jz \exit