openkylin
/
platform_system_core
mirror of https://gitee.com/openkylin/platform_system_core.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

Do not suppress maps dump when si_addr<PAGE_SIZE 

Also remove alignment of si_addr.

Change-Id: Ie5445bf8a5baa49e04e37c643c25ebd0f1dc9d22
This commit is contained in:
Dmitriy Ivanov 2014-08-08 16:30:13 -07:00
parent 56b28f6b2c
commit f10aa3ae9d
1 changed files with 6 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
debuggerd/tombstone.cpp
View File

@ -64,6 +64,7 @@ static bool signal_has_si_addr(int sig) {
case SIGFPE:
case SIGILL:
case SIGSEGV:
case SIGTRAP:
return true;
default:
return false;
@ -350,16 +351,12 @@ static void dump_nearby_maps(BacktraceMap* map, log_t* log, pid_t tid) {
return;
}
bool is_running = (si.si_code == SI_USER);
bool has_fault_address = signal_has_si_addr(si.si_signo);
uintptr_t addr = reinterpret_cast<uintptr_t>(si.si_addr);
addr &= ~0xfff; // round to 4K page boundary
if (!is_running && addr == 0) { // null-pointer deref
return;
}
_LOG(log, logtype::MAPS, "\nmemory map: %s\n", is_running? "" : "(fault address prefixed with --->)");
_LOG(log, logtype::MAPS, "\nmemory map: %s\n", has_fault_address ? "(fault address prefixed with --->)" : "");
if(!is_running && (addr < map->begin()->start)) {
if (has_fault_address && (addr < map->begin()->start)) {
_LOG(log, logtype::MAPS, "--->Fault address falls at %" PRIPTR " before any mapped regions\n", addr);
}
@ -369,10 +366,10 @@ static void dump_nearby_maps(BacktraceMap* map, log_t* log, pid_t tid) {
_LOG(log, logtype::MAPS, "--->Fault address falls at %" PRIPTR " between mapped regions\n", addr);
}
prev = it;
bool in_map = !is_running && (addr >= (*it).start) && (addr < (*it).end);
bool in_map = has_fault_address && (addr >= (*it).start) && (addr < (*it).end);
dump_map(log, &*it, in_map);
}
if (!is_running && (addr >= (*prev).end)) {
if (has_fault_address && (addr >= (*prev).end)) {
_LOG(log, logtype::MAPS, "--->Fault address falls at %" PRIPTR " after any mapped regions\n", addr);
}
}