aboutsummaryrefslogtreecommitdiffstats
path: root/arch/s390
diff options
context:
space:
mode:
authorCedric Le Goater <clg@fr.ibm.com>2006-01-06 03:19:10 -0500
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-06 11:33:49 -0500
commit4e3df37e7fb4e41bec84465ff31949737160ed58 (patch)
tree99860db17a34bd7f8ab18b97bf5f842141a749a7 /arch/s390
parenta63a4931c301a14ca79c41fec0b99d898dbba1fb (diff)
[PATCH] s390: rt_sigreturn fix
Check return code of do_sigaltstack and force a SIGSEGV if it is -EFAULT. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Cedric Le Goater <clg@fr.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/s390')
-rw-r--r--arch/s390/kernel/compat_signal.c2
-rw-r--r--arch/s390/kernel/signal.c6
2 files changed, 3 insertions, 5 deletions
diff --git a/arch/s390/kernel/compat_signal.c b/arch/s390/kernel/compat_signal.c
index 4ff6808456ea..fa2b3bc22f20 100644
--- a/arch/s390/kernel/compat_signal.c
+++ b/arch/s390/kernel/compat_signal.c
@@ -467,8 +467,6 @@ asmlinkage long sys32_rt_sigreturn(struct pt_regs *regs)
467 if (err) 467 if (err)
468 goto badframe; 468 goto badframe;
469 469
470 /* It is more difficult to avoid calling this function than to
471 call it and ignore errors. */
472 set_fs (KERNEL_DS); 470 set_fs (KERNEL_DS);
473 do_sigaltstack((stack_t __user *)&st, NULL, regs->gprs[15]); 471 do_sigaltstack((stack_t __user *)&st, NULL, regs->gprs[15]);
474 set_fs (old_fs); 472 set_fs (old_fs);
diff --git a/arch/s390/kernel/signal.c b/arch/s390/kernel/signal.c
index 6e0110d71191..13592d00a10f 100644
--- a/arch/s390/kernel/signal.c
+++ b/arch/s390/kernel/signal.c
@@ -254,9 +254,9 @@ asmlinkage long sys_rt_sigreturn(struct pt_regs *regs)
254 if (restore_sigregs(regs, &frame->uc.uc_mcontext)) 254 if (restore_sigregs(regs, &frame->uc.uc_mcontext))
255 goto badframe; 255 goto badframe;
256 256
257 /* It is more difficult to avoid calling this function than to 257 if (do_sigaltstack(&frame->uc.uc_stack, NULL,
258 call it and ignore errors. */ 258 regs->gprs[15]) == -EFAULT)
259 do_sigaltstack(&frame->uc.uc_stack, NULL, regs->gprs[15]); 259 goto badframe;
260 return regs->gprs[2]; 260 return regs->gprs[2];
261 261
262badframe: 262badframe: