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| author | Marcin Kościelnicki <koriakin@0x04.net> | 2015-11-02 02:12:58 +0100 |
|---|---|---|
| committer | Marcin Kościelnicki <koriakin@0x04.net> | 2015-11-04 15:26:59 +0100 |
| commit | 394816ee10a85e3e0fa7c9b0a4ca29e7e160e63c (patch) | |
| tree | 3e358b49f28689b4eab4a4ed71f8b98aff5bc7c5 /gdb | |
| parent | fe6052e1eeffd4e2e2210cebc480b90094429a16 (diff) | |
| download | gdb-394816ee10a85e3e0fa7c9b0a4ca29e7e160e63c.zip gdb-394816ee10a85e3e0fa7c9b0a4ca29e7e160e63c.tar.gz gdb-394816ee10a85e3e0fa7c9b0a4ca29e7e160e63c.tar.bz2 | |
gdb/record-full: Use xmalloc instead of alloca for temporary memory storage.
On the newly added s390 target, it's possible for a single instruction
to write practically unbounded amount of memory (eg. MVCLE). This caused
a stack overflow when alloca was used.
gdb/ChangeLog:
* record-full.c (record_full_exec_insn): Use xmalloc for temporary
memory storage.
Diffstat (limited to 'gdb')
| -rw-r--r-- | gdb/ChangeLog | 5 | ||||
| -rw-r--r-- | gdb/record-full.c | 5 |
2 files changed, 9 insertions, 1 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index a95fe4c..d286821 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,8 @@ +2015-11-04 Marcin Kościelnicki <koriakin@0x04.net> + + * record-full.c (record_full_exec_insn): Use xmalloc for temporary + memory storage. + 2015-11-04 Markus Metzger <markus.t.metzger@intel.com> * record.c (get_insn_history_modifiers): Set DISASSEMBLY_SOURCE diff --git a/gdb/record-full.c b/gdb/record-full.c index 595e357..03b3d41 100644 --- a/gdb/record-full.c +++ b/gdb/record-full.c @@ -726,7 +726,8 @@ record_full_exec_insn (struct regcache *regcache, /* Nothing to do if the entry is flagged not_accessible. */ if (!entry->u.mem.mem_entry_not_accessible) { - gdb_byte *mem = (gdb_byte *) alloca (entry->u.mem.len); + gdb_byte *mem = (gdb_byte *) xmalloc (entry->u.mem.len); + struct cleanup *cleanup = make_cleanup (xfree, mem); if (record_debug > 1) fprintf_unfiltered (gdb_stdlog, @@ -771,6 +772,8 @@ record_full_exec_insn (struct regcache *regcache, record_full_stop_reason = TARGET_STOPPED_BY_WATCHPOINT; } } + + do_cleanups (cleanup); } } break; |