jdk8-mips64-public/hotspot: src/cpu/sparc/vm/debug

6843347: Boundary values in some public GC options cause crashes
Summary: Setting some public integer options to specific values causes crashes or undefined GC behavior. This patchset adds the necessary argument checking for these options.
Reviewed-by: jmasa, brutisso

     1 /*

     2  * Copyright (c) 1999, 2012, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  *

    23  */

    25 #include "precompiled.hpp"

    26 #include "code/codeCache.hpp"

    27 #include "code/nmethod.hpp"

    28 #include "runtime/frame.hpp"

    29 #include "runtime/init.hpp"

    30 #include "runtime/os.hpp"

    31 #include "utilities/debug.hpp"

    32 #include "utilities/top.hpp"

    34 #ifndef PRODUCT

    36 extern "C" void findpc(int x);

    39 void pd_ps(frame f) {

    40   intptr_t* sp = f.sp();

    41   intptr_t* prev_sp = sp - 1;

    42   intptr_t *pc = NULL;

    43   intptr_t *next_pc = NULL;

    44   int count = 0;

    45   tty->print("register window backtrace from %#x:\n", sp);

    46   while (sp != NULL && ((intptr_t)sp & 7) == 0 && sp > prev_sp && sp < prev_sp+1000) {

    47     pc      = next_pc;

    48     next_pc = (intptr_t*) sp[I7->sp_offset_in_saved_window()];

    49     tty->print("[%d] sp=%#x pc=", count, sp);

    50     findpc((intptr_t)pc);

    51     if (WizardMode && Verbose) {

    52       // print register window contents also

    53       tty->print_cr("    L0..L7: {%#x %#x %#x %#x %#x %#x %#x %#x}",

    54                     sp[0+0],sp[0+1],sp[0+2],sp[0+3],

    55                     sp[0+4],sp[0+5],sp[0+6],sp[0+7]);

    56       tty->print_cr("    I0..I7: {%#x %#x %#x %#x %#x %#x %#x %#x}",

    57                     sp[8+0],sp[8+1],sp[8+2],sp[8+3],

    58                     sp[8+4],sp[8+5],sp[8+6],sp[8+7]);

    59       // (and print stack frame contents too??)

    61       CodeBlob *b = CodeCache::find_blob((address) pc);

    62       if (b != NULL) {

    63         if (b->is_nmethod()) {

    64           Method* m = ((nmethod*)b)->method();

    65           int nlocals = m->max_locals();

    66           int nparams  = m->size_of_parameters();

    67           tty->print_cr("compiled java method (locals = %d, params = %d)", nlocals, nparams);

    68         }

    69       }

    70     }

    71     prev_sp = sp;

    72     sp = (intptr_t *)sp[FP->sp_offset_in_saved_window()];

    73     sp = (intptr_t *)((intptr_t)sp + STACK_BIAS);

    74     count += 1;

    75   }

    76   if (sp != NULL)

    77     tty->print("[%d] sp=%#x [bogus sp!]", count, sp);

    78 }

    80 #endif // PRODUCT

src/cpu/sparc/vm/debug_sparc.cpp@12f651e29f6b

src/cpu/sparc/vm/debug_sparc.cpp

Mercurial > jdk8-mips64-public > hotspot / file revision

src/cpu/sparc/vm/debug_sparc.cpp@12f651e29f6b

src/cpu/sparc/vm/debug_sparc.cpp