am 46a97883: Merge "Changing how debuggerd filters log messages to different locations." (e3c2e761) · Commits · e / os / android_system_core

debuggerd/arm/machine.cpp

+25 −27

Original line number	Diff line number	Diff line
		@@ -40,13 +40,12 @@

		// If configured to do so, dump memory around all registers
		// for the crashing thread.
		void dump_memory_and_code(log_t* log, pid_t tid, int scope_flags) {
		void dump_memory_and_code(log_t* log, pid_t tid) {
		struct pt_regs regs;
		if (ptrace(PTRACE_GETREGS, tid, 0, &regs)) {
		return;
		}

		if (IS_AT_FAULT(scope_flags) && DUMP_MEMORY_FOR_ALL_REGISTERS) {
		static const char REG_NAMES[] = "r0r1r2r3r4r5r6r7r8r9slfpipsp";

		for (int reg = 0; reg < 14; reg++) {
		@@ -59,38 +58,37 @@ void dump_memory_and_code(log_t* log, pid_t tid, int scope_flags) {
		continue;
		}

		_LOG(log, scope_flags \| SCOPE_SENSITIVE, "\nmemory near %.2s:\n", &REG_NAMES[reg * 2]);
		dump_memory(log, tid, addr, scope_flags \| SCOPE_SENSITIVE);
		}
		_LOG(log, logtype::MEMORY, "\nmemory near %.2s:\n", &REG_NAMES[reg * 2]);
		dump_memory(log, tid, addr);
		}

		// explicitly allow upload of code dump logging
		_LOG(log, scope_flags, "\ncode around pc:\n");
		dump_memory(log, tid, static_cast<uintptr_t>(regs.ARM_pc), scope_flags);
		_LOG(log, logtype::MEMORY, "\ncode around pc:\n");
		dump_memory(log, tid, static_cast<uintptr_t>(regs.ARM_pc));

		if (regs.ARM_pc != regs.ARM_lr) {
		_LOG(log, scope_flags, "\ncode around lr:\n");
		dump_memory(log, tid, static_cast<uintptr_t>(regs.ARM_lr), scope_flags);
		_LOG(log, logtype::MEMORY, "\ncode around lr:\n");
		dump_memory(log, tid, static_cast<uintptr_t>(regs.ARM_lr));
		}
		}

		void dump_registers(log_t* log, pid_t tid, int scope_flags) {
		void dump_registers(log_t* log, pid_t tid) {
		struct pt_regs r;
		if (ptrace(PTRACE_GETREGS, tid, 0, &r)) {
		_LOG(log, scope_flags, "cannot get registers: %s\n", strerror(errno));
		_LOG(log, logtype::REGISTERS, "cannot get registers: %s\n", strerror(errno));
		return;
		}

		_LOG(log, scope_flags, " r0 %08x r1 %08x r2 %08x r3 %08x\n",
		_LOG(log, logtype::REGISTERS, " r0 %08x r1 %08x r2 %08x r3 %08x\n",
		static_cast<uint32_t>(r.ARM_r0), static_cast<uint32_t>(r.ARM_r1),
		static_cast<uint32_t>(r.ARM_r2), static_cast<uint32_t>(r.ARM_r3));
		_LOG(log, scope_flags, " r4 %08x r5 %08x r6 %08x r7 %08x\n",
		_LOG(log, logtype::REGISTERS, " r4 %08x r5 %08x r6 %08x r7 %08x\n",
		static_cast<uint32_t>(r.ARM_r4), static_cast<uint32_t>(r.ARM_r5),
		static_cast<uint32_t>(r.ARM_r6), static_cast<uint32_t>(r.ARM_r7));
		_LOG(log, scope_flags, " r8 %08x r9 %08x sl %08x fp %08x\n",
		_LOG(log, logtype::REGISTERS, " r8 %08x r9 %08x sl %08x fp %08x\n",
		static_cast<uint32_t>(r.ARM_r8), static_cast<uint32_t>(r.ARM_r9),
		static_cast<uint32_t>(r.ARM_r10), static_cast<uint32_t>(r.ARM_fp));
		_LOG(log, scope_flags, " ip %08x sp %08x lr %08x pc %08x cpsr %08x\n",
		_LOG(log, logtype::REGISTERS, " ip %08x sp %08x lr %08x pc %08x cpsr %08x\n",
		static_cast<uint32_t>(r.ARM_ip), static_cast<uint32_t>(r.ARM_sp),
		static_cast<uint32_t>(r.ARM_lr), static_cast<uint32_t>(r.ARM_pc),
		static_cast<uint32_t>(r.ARM_cpsr));
		@@ -100,14 +98,14 @@ void dump_registers(log_t* log, pid_t tid, int scope_flags) {
		int i;

		if (ptrace(PTRACE_GETVFPREGS, tid, 0, &vfp_regs)) {
		_LOG(log, scope_flags, "cannot get registers: %s\n", strerror(errno));
		_LOG(log, logtype::REGISTERS, "cannot get registers: %s\n", strerror(errno));
		return;
		}

		for (i = 0; i < NUM_VFP_REGS; i += 2) {
		_LOG(log, scope_flags, " d%-2d %016llx d%-2d %016llx\n",
		_LOG(log, logtype::REGISTERS, " d%-2d %016llx d%-2d %016llx\n",
		i, vfp_regs.fpregs[i], i+1, vfp_regs.fpregs[i+1]);
		}
		_LOG(log, scope_flags, " scr %08lx\n", vfp_regs.fpscr);
		_LOG(log, logtype::REGISTERS, " scr %08lx\n", vfp_regs.fpscr);
		#endif
		}

debuggerd/arm64/machine.cpp

+25 −27

Original line number	Diff line number	Diff line
		@@ -37,19 +37,18 @@
		* If configured to do so, dump memory around all registers
		* for the crashing thread.
		*/
		void dump_memory_and_code(log_t* log, pid_t tid, int scope_flags) {
		void dump_memory_and_code(log_t* log, pid_t tid) {
		struct user_pt_regs regs;
		struct iovec io;
		io.iov_base = &regs;
		io.iov_len = sizeof(regs);

		if (ptrace(PTRACE_GETREGSET, tid, (void*)NT_PRSTATUS, &io) == -1) {
		_LOG(log, scope_flags, "%s: ptrace failed to get registers: %s\n",
		LOG_ERROR("%s: ptrace failed to get registers: %s\n",
		__func__, strerror(errno));
		return;
		}

		if (IS_AT_FAULT(scope_flags) && DUMP_MEMORY_FOR_ALL_REGISTERS) {
		for (int reg = 0; reg < 31; reg++) {
		uintptr_t addr = regs.regs[reg];

		@@ -61,44 +60,43 @@ void dump_memory_and_code(log_t* log, pid_t tid, int scope_flags) {
		continue;
		}

		_LOG(log, scope_flags \| SCOPE_SENSITIVE, "\nmemory near x%d:\n", reg);
		dump_memory(log, tid, addr, scope_flags \| SCOPE_SENSITIVE);
		}
		_LOG(log, logtype::MEMORY, "\nmemory near x%d:\n", reg);
		dump_memory(log, tid, addr);
		}

		_LOG(log, scope_flags, "\ncode around pc:\n");
		dump_memory(log, tid, (uintptr_t)regs.pc, scope_flags);
		_LOG(log, logtype::MEMORY, "\ncode around pc:\n");
		dump_memory(log, tid, (uintptr_t)regs.pc);

		if (regs.pc != regs.sp) {
		_LOG(log, scope_flags, "\ncode around sp:\n");
		dump_memory(log, tid, (uintptr_t)regs.sp, scope_flags);
		_LOG(log, logtype::MEMORY, "\ncode around sp:\n");
		dump_memory(log, tid, (uintptr_t)regs.sp);
		}
		}

		void dump_registers(log_t* log, pid_t tid, int scope_flags)
		{
		void dump_registers(log_t* log, pid_t tid) {
		struct user_pt_regs r;
		struct iovec io;
		io.iov_base = &r;
		io.iov_len = sizeof(r);

		if (ptrace(PTRACE_GETREGSET, tid, (void) NT_PRSTATUS, (void) &io) == -1) {
		_LOG(log, scope_flags, "ptrace error: %s\n", strerror(errno));
		LOG_ERROR("ptrace error: %s\n", strerror(errno));
		return;
		}

		for (int i = 0; i < 28; i += 4) {
		_LOG(log, scope_flags, " x%-2d %016lx x%-2d %016lx x%-2d %016lx x%-2d %016lx\n",
		_LOG(log, logtype::REGISTERS,
		" x%-2d %016lx x%-2d %016lx x%-2d %016lx x%-2d %016lx\n",
		i, (uint64_t)r.regs[i],
		i+1, (uint64_t)r.regs[i+1],
		i+2, (uint64_t)r.regs[i+2],
		i+3, (uint64_t)r.regs[i+3]);
		}

		_LOG(log, scope_flags, " x28 %016lx x29 %016lx x30 %016lx\n",
		_LOG(log, logtype::REGISTERS, " x28 %016lx x29 %016lx x30 %016lx\n",
		(uint64_t)r.regs[28], (uint64_t)r.regs[29], (uint64_t)r.regs[30]);

		_LOG(log, scope_flags, " sp %016lx pc %016lx\n",
		_LOG(log, logtype::REGISTERS, " sp %016lx pc %016lx\n",
		(uint64_t)r.sp, (uint64_t)r.pc);


		@@ -107,12 +105,12 @@ void dump_registers(log_t* log, pid_t tid, int scope_flags)
		io.iov_len = sizeof(f);

		if (ptrace(PTRACE_GETREGSET, tid, (void) NT_PRFPREG, (void) &io) == -1) {
		_LOG(log, scope_flags, "ptrace error: %s\n", strerror(errno));
		LOG_ERROR("ptrace error: %s\n", strerror(errno));
		return;
		}

		for (int i = 0; i < 32; i += 4) {
		_LOG(log, scope_flags, " v%-2d %016lx v%-2d %016lx v%-2d %016lx v%-2d %016lx\n",
		_LOG(log, logtype::REGISTERS, " v%-2d %016lx v%-2d %016lx v%-2d %016lx v%-2d %016lx\n",
		i, (uint64_t)f.vregs[i],
		i+1, (uint64_t)f.vregs[i+1],
		i+2, (uint64_t)f.vregs[i+2],

debuggerd/backtrace.cpp

+10 −10

Original line number	Diff line number	Diff line
		@@ -30,6 +30,7 @@
		#include <UniquePtr.h>

		#include "backtrace.h"

		#include "utility.h"

		static void dump_process_header(log_t* log, pid_t pid) {
		@@ -49,15 +50,15 @@ static void dump_process_header(log_t* log, pid_t pid) {
		localtime_r(&t, &tm);
		char timestr[64];
		strftime(timestr, sizeof(timestr), "%F %T", &tm);
		_LOG(log, SCOPE_AT_FAULT, "\n\n----- pid %d at %s -----\n", pid, timestr);
		_LOG(log, logtype::BACKTRACE, "\n\n----- pid %d at %s -----\n", pid, timestr);

		if (procname) {
		_LOG(log, SCOPE_AT_FAULT, "Cmd line: %s\n", procname);
		_LOG(log, logtype::BACKTRACE, "Cmd line: %s\n", procname);
		}
		}

		static void dump_process_footer(log_t* log, pid_t pid) {
		_LOG(log, SCOPE_AT_FAULT, "\n----- end %d -----\n", pid);
		_LOG(log, logtype::BACKTRACE, "\n----- end %d -----\n", pid);
		}

		static void dump_thread(
		@@ -79,10 +80,10 @@ static void dump_thread(
		}
		}

		_LOG(log, SCOPE_AT_FAULT, "\n\"%s\" sysTid=%d\n", threadname ? threadname : "<unknown>", tid);
		_LOG(log, logtype::BACKTRACE, "\n\"%s\" sysTid=%d\n", threadname ? threadname : "<unknown>", tid);

		if (!attached && ptrace(PTRACE_ATTACH, tid, 0, 0) < 0) {
		_LOG(log, SCOPE_AT_FAULT, "Could not attach to thread: %s\n", strerror(errno));
		_LOG(log, logtype::BACKTRACE, "Could not attach to thread: %s\n", strerror(errno));
		return;
		}

		@@ -90,11 +91,11 @@ static void dump_thread(

		UniquePtr<Backtrace> backtrace(Backtrace::Create(tid, BACKTRACE_CURRENT_THREAD));
		if (backtrace->Unwind(0)) {
		dump_backtrace_to_log(backtrace.get(), log, SCOPE_AT_FAULT, " ");
		dump_backtrace_to_log(backtrace.get(), log, " ");
		}

		if (!attached && ptrace(PTRACE_DETACH, tid, 0, 0) != 0) {
		LOG("ptrace detach from %d failed: %s\n", tid, strerror(errno));
		LOG_ERROR("ptrace detach from %d failed: %s\n", tid, strerror(errno));
		*detach_failed = true;
		}
		}
		@@ -133,9 +134,8 @@ void dump_backtrace(int fd, int amfd, pid_t pid, pid_t tid, bool* detach_failed,
		dump_process_footer(&log, pid);
		}

		void dump_backtrace_to_log(Backtrace* backtrace, log_t* log,
		int scope_flags, const char* prefix) {
		void dump_backtrace_to_log(Backtrace* backtrace, log_t* log, const char* prefix) {
		for (size_t i = 0; i < backtrace->NumFrames(); i++) {
		_LOG(log, scope_flags, "%s%s\n", prefix, backtrace->FormatFrameData(i).c_str());
		_LOG(log, logtype::BACKTRACE, "%s%s\n", prefix, backtrace->FormatFrameData(i).c_str());
		}
		}

debuggerd/backtrace.h

+1 −2

Original line number	Diff line number	Diff line
		@@ -29,7 +29,6 @@ void dump_backtrace(int fd, int amfd, pid_t pid, pid_t tid, bool* detach_failed,
		int* total_sleep_time_usec);

		/* Dumps the backtrace in the backtrace data structure to the log. */
		void dump_backtrace_to_log(Backtrace* backtrace, log_t* log,
		int scope_flags, const char* prefix);
		void dump_backtrace_to_log(Backtrace* backtrace, log_t* log, const char* prefix);

		#endif // _DEBUGGERD_BACKTRACE_H

debuggerd/debuggerd.cpp

+17 −18

Original line number	Diff line number	Diff line
		@@ -30,7 +30,6 @@
		#include <sys/stat.h>
		#include <sys/poll.h>

		#include <log/logd.h>
		#include <log/logger.h>

		#include <cutils/sockets.h>
		@@ -62,7 +61,7 @@ static void wait_for_user_action(pid_t pid) {
		char exe[PATH_MAX];
		int count;
		if ((count = readlink(path, exe, sizeof(exe) - 1)) == -1) {
		LOG("readlink('%s') failed: %s", path, strerror(errno));
		LOG_ERROR("readlink('%s') failed: %s", path, strerror(errno));
		strlcpy(exe, "unknown", sizeof(exe));
		} else {
		exe[count] = '\0';
		@@ -79,7 +78,7 @@ static void wait_for_user_action(pid_t pid) {
		}

		// Explain how to attach the debugger.
		LOG( "********************************************************\n"
		LOG_ERROR( "********************************************************\n"
		"* Process %d has been suspended while crashing.\n"
		"* To attach gdbserver for a gdb connection on port 5039\n"
		"* and start gdbclient:\n"
		@@ -104,7 +103,7 @@ static void wait_for_user_action(pid_t pid) {
		uninit_getevent();
		}

		LOG("debuggerd resuming process %d", pid);
		LOG_ERROR("debuggerd resuming process %d", pid);
		}

		static int get_process_info(pid_t tid, pid_t* out_pid, uid_t* out_uid, uid_t* out_gid) {
		@@ -140,7 +139,7 @@ static int read_request(int fd, debugger_request_t* out_request) {
		socklen_t len = sizeof(cr);
		int status = getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &cr, &len);
		if (status != 0) {
		LOG("cannot get credentials\n");
		LOG_ERROR("cannot get credentials\n");
		return -1;
		}

		@@ -153,7 +152,7 @@ static int read_request(int fd, debugger_request_t* out_request) {
		pollfds[0].revents = 0;
		status = TEMP_FAILURE_RETRY(poll(pollfds, 1, 3000));
		if (status != 1) {
		LOG("timed out reading tid (from pid=%d uid=%d)\n", cr.pid, cr.uid);
		LOG_ERROR("timed out reading tid (from pid=%d uid=%d)\n", cr.pid, cr.uid);
		return -1;
		}

		@@ -161,14 +160,14 @@ static int read_request(int fd, debugger_request_t* out_request) {
		memset(&msg, 0, sizeof(msg));
		status = TEMP_FAILURE_RETRY(read(fd, &msg, sizeof(msg)));
		if (status < 0) {
		LOG("read failure? %s (pid=%d uid=%d)\n", strerror(errno), cr.pid, cr.uid);
		LOG_ERROR("read failure? %s (pid=%d uid=%d)\n", strerror(errno), cr.pid, cr.uid);
		return -1;
		}
		if (status == sizeof(debugger_msg_t)) {
		XLOG("crash request of size %d abort_msg_address=0x%" PRIPTR "\n",
		status, msg.abort_msg_address);
		} else {
		LOG("invalid crash request of size %d (from pid=%d uid=%d)\n", status, cr.pid, cr.uid);
		LOG_ERROR("invalid crash request of size %d (from pid=%d uid=%d)\n", status, cr.pid, cr.uid);
		return -1;
		}

		@@ -186,7 +185,7 @@ static int read_request(int fd, debugger_request_t* out_request) {
		struct stat s;
		snprintf(buf, sizeof buf, "/proc/%d/task/%d", out_request->pid, out_request->tid);
		if (stat(buf, &s)) {
		LOG("tid %d does not exist in pid %d. ignoring debug request\n",
		LOG_ERROR("tid %d does not exist in pid %d. ignoring debug request\n",
		out_request->tid, out_request->pid);
		return -1;
		}
		@@ -197,7 +196,7 @@ static int read_request(int fd, debugger_request_t* out_request) {
		status = get_process_info(out_request->tid, &out_request->pid,
		&out_request->uid, &out_request->gid);
		if (status < 0) {
		LOG("tid %d does not exist. ignoring explicit dump request\n", out_request->tid);
		LOG_ERROR("tid %d does not exist. ignoring explicit dump request\n", out_request->tid);
		return -1;
		}
		} else {
		@@ -238,12 +237,12 @@ static void handle_request(int fd) {
		// See details in bionic/libc/linker/debugger.c, in function
		// debugger_signal_handler().
		if (ptrace(PTRACE_ATTACH, request.tid, 0, 0)) {
		LOG("ptrace attach failed: %s\n", strerror(errno));
		LOG_ERROR("ptrace attach failed: %s\n", strerror(errno));
		} else {
		bool detach_failed = false;
		bool attach_gdb = should_attach_gdb(&request);
		if (TEMP_FAILURE_RETRY(write(fd, "\0", 1)) != 1) {
		LOG("failed responding to client: %s\n", strerror(errno));
		LOG_ERROR("failed responding to client: %s\n", strerror(errno));
		} else {
		char* tombstone_path = NULL;

		@@ -275,7 +274,7 @@ static void handle_request(int fd) {
		XLOG("stopped -- continuing\n");
		status = ptrace(PTRACE_CONT, request.tid, 0, 0);
		if (status) {
		LOG("ptrace continue failed: %s\n", strerror(errno));
		LOG_ERROR("ptrace continue failed: %s\n", strerror(errno));
		}
		continue; // loop again
		}
		@@ -307,7 +306,7 @@ static void handle_request(int fd) {

		default:
		XLOG("stopped -- unexpected signal\n");
		LOG("process stopped due to unexpected signal %d\n", signal);
		LOG_ERROR("process stopped due to unexpected signal %d\n", signal);
		break;
		}
		break;
		@@ -330,7 +329,7 @@ static void handle_request(int fd) {

		// detach so we can attach gdbserver
		if (ptrace(PTRACE_DETACH, request.tid, 0, 0)) {
		LOG("ptrace detach from %d failed: %s\n", request.tid, strerror(errno));
		LOG_ERROR("ptrace detach from %d failed: %s\n", request.tid, strerror(errno));
		detach_failed = true;
		}

		@@ -342,7 +341,7 @@ static void handle_request(int fd) {
		} else {
		// just detach
		if (ptrace(PTRACE_DETACH, request.tid, 0, 0)) {
		LOG("ptrace detach from %d failed: %s\n", request.tid, strerror(errno));
		LOG_ERROR("ptrace detach from %d failed: %s\n", request.tid, strerror(errno));
		detach_failed = true;
		}
		}
		@@ -354,7 +353,7 @@ static void handle_request(int fd) {
		// actual parent won't receive a death notification via wait(2). At this point
		// there's not much we can do about that.
		if (detach_failed) {
		LOG("debuggerd committing suicide to free the zombie!\n");
		LOG_ERROR("debuggerd committing suicide to free the zombie!\n");
		kill(getpid(), SIGKILL);
		}
		}
		@@ -400,7 +399,7 @@ static int do_server() {
		return 1;
		fcntl(s, F_SETFD, FD_CLOEXEC);

		LOG("debuggerd: " __DATE__ " " __TIME__ "\n");
		LOG_ERROR("debuggerd: " __DATE__ " " __TIME__ "\n");

		for (;;) {
		sockaddr addr;