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Hi! s390/s390x hasn't been updated to handle alternate stacks properly. The following untested patch should cure it. 2009-09-08 Jakub Jelinek <jakub@redhat.com> * sysdeps/s390/s390-32/____longjmp_chk.c: Removed. * sysdeps/s390/s390-64/____longjmp_chk.c: Removed. * sysdeps/unix/sysv/linux/s390/s390-32/____longjmp_chk.c: New file. * sysdeps/unix/sysv/linux/s390/s390-64/____longjmp_chk.c: New file. --- libc/sysdeps/s390/s390-32/____longjmp_chk.c.jj 2009-05-29 21:50:43.000000000 +0200 +++ libc/sysdeps/s390/s390-32/____longjmp_chk.c 2009-09-08 13:52:10.000000000 +0200 @@ -1,41 +0 @@ -/* Copyright (C) 2009 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Jakub Jelinek <jakub@redhat.com>. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -#include <errno.h> -#include <sysdep.h> -#include <setjmp.h> -#include <bits/setjmp.h> -#include <stdlib.h> -#include <unistd.h> -#include <stdio.h> - -#define __longjmp ____longjmp_chk - -#define CHECK_SP(env, guard) \ - do \ - { \ - uintptr_t cur_sp; \ - uintptr_t new_sp = env->__gregs[9]; \ - __asm ("lr %0, %%r15" : "=r" (cur_sp)); \ - new_sp ^= guard; \ - if (new_sp < cur_sp) \ - __fortify_fail ("longjmp causes uninitialized stack frame"); \ - } while (0) - -#include "__longjmp.c" --- libc/sysdeps/s390/s390-64/____longjmp_chk.c.jj 2009-05-29 21:50:43.000000000 +0200 +++ libc/sysdeps/s390/s390-64/____longjmp_chk.c 2009-09-08 13:52:10.000000000 +0200 @@ -1,41 +0 @@ -/* Copyright (C) 2009 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Jakub Jelinek <jakub@redhat.com>. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -#include <errno.h> -#include <sysdep.h> -#include <setjmp.h> -#include <bits/setjmp.h> -#include <stdlib.h> -#include <unistd.h> -#include <stdio.h> - -#define __longjmp ____longjmp_chk - -#define CHECK_SP(env, guard) \ - do \ - { \ - uintptr_t cur_sp; \ - uintptr_t new_sp = env->__gregs[9]; \ - __asm ("lgr %0, %%r15" : "=r" (cur_sp)); \ - new_sp ^= guard; \ - if (new_sp < cur_sp) \ - __fortify_fail ("longjmp causes uninitialized stack frame"); \ - } while (0) - -#include "__longjmp.c" --- libc/sysdeps/unix/sysv/linux/s390/s390-32/____longjmp_chk.c.jj 2009-09-08 13:51:22.000000000 +0200 +++ libc/sysdeps/unix/sysv/linux/s390/s390-32/____longjmp_chk.c 2009-09-08 14:15:27.000000000 +0200 @@ -0,0 +1,55 @@ +/* Copyright (C) 2009 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Jakub Jelinek <jakub@redhat.com>. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <errno.h> +#include <sysdep.h> +#include <setjmp.h> +#include <bits/setjmp.h> +#include <stdlib.h> +#include <unistd.h> +#include <stdio.h> +#include <stdint.h> +#include <signal.h> +#include <sys/syscall.h> + +#define __longjmp ____longjmp_chk + +#define CHECK_SP(env, guard) \ + do \ + { \ + uintptr_t cur_sp; \ + uintptr_t new_sp = env->__gregs[9]; \ + __asm ("lr %0, %%r15" : "=r" (cur_sp)); \ + new_sp ^= guard; \ + if (new_sp < cur_sp) \ + { \ + stack_t oss; \ + INTERNAL_SYSCALL_DECL (err); \ + int res = INTERNAL_SYSCALL (sigaltstack, err, 2, NULL, &oss); \ + if (!INTERNAL_SYSCALL_ERROR_P (res, err)) \ + { \ + if ((oss.ss_flags & SS_ONSTACK) == 0 \ + || ((uintptr_t) (oss.ss_sp + oss.ss_size) - new_sp \ + >= oss.ss_size)) \ + __fortify_fail ("longjmp causes uninitialized stack frame");\ + } \ + } \ + } while (0) + +#include "__longjmp.c" --- libc/sysdeps/unix/sysv/linux/s390/s390-64/____longjmp_chk.c.jj 2009-09-08 13:51:22.000000000 +0200 +++ libc/sysdeps/unix/sysv/linux/s390/s390-64/____longjmp_chk.c 2009-09-08 14:15:14.000000000 +0200 @@ -0,0 +1,55 @@ +/* Copyright (C) 2009 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Jakub Jelinek <jakub@redhat.com>. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <errno.h> +#include <sysdep.h> +#include <setjmp.h> +#include <bits/setjmp.h> +#include <stdlib.h> +#include <unistd.h> +#include <stdio.h> +#include <stdint.h> +#include <signal.h> +#include <sys/syscall.h> + +#define __longjmp ____longjmp_chk + +#define CHECK_SP(env, guard) \ + do \ + { \ + uintptr_t cur_sp; \ + uintptr_t new_sp = env->__gregs[9]; \ + __asm ("lgr %0, %%r15" : "=r" (cur_sp)); \ + new_sp ^= guard; \ + if (new_sp < cur_sp) \ + { \ + stack_t oss; \ + INTERNAL_SYSCALL_DECL (err); \ + int res = INTERNAL_SYSCALL (sigaltstack, err, 2, NULL, &oss); \ + if (!INTERNAL_SYSCALL_ERROR_P (res, err)) \ + { \ + if ((oss.ss_flags & SS_ONSTACK) == 0 \ + || ((uintptr_t) (oss.ss_sp + oss.ss_size) - new_sp \ + >= oss.ss_size)) \ + __fortify_fail ("longjmp causes uninitialized stack frame");\ + } \ + } \ + } while (0) + +#include "__longjmp.c" Jakub
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