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-rw-r--r--lib/asan/asan_rtl.cc921
1 files changed, 352 insertions, 569 deletions
diff --git a/lib/asan/asan_rtl.cc b/lib/asan/asan_rtl.cc
index c876f6d97f73..34324fa16d08 100644
--- a/lib/asan/asan_rtl.cc
+++ b/lib/asan/asan_rtl.cc
@@ -1,4 +1,4 @@
-//===-- asan_rtl.cc ---------------------------------------------*- C++ -*-===//
+//===-- asan_rtl.cc -------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
@@ -16,254 +16,276 @@
#include "asan_interface.h"
#include "asan_internal.h"
#include "asan_lock.h"
-#include "asan_mac.h"
#include "asan_mapping.h"
#include "asan_stack.h"
#include "asan_stats.h"
#include "asan_thread.h"
#include "asan_thread_registry.h"
+#include "sanitizer_common/sanitizer_atomic.h"
+#include "sanitizer_common/sanitizer_flags.h"
+#include "sanitizer_common/sanitizer_libc.h"
+
+namespace __sanitizer {
+using namespace __asan;
+
+void Die() {
+ static atomic_uint32_t num_calls;
+ if (atomic_fetch_add(&num_calls, 1, memory_order_relaxed) != 0) {
+ // Don't die twice - run a busy loop.
+ while (1) { }
+ }
+ if (flags()->sleep_before_dying) {
+ Report("Sleeping for %zd second(s)\n", flags()->sleep_before_dying);
+ SleepForSeconds(flags()->sleep_before_dying);
+ }
+ if (flags()->unmap_shadow_on_exit)
+ UnmapOrDie((void*)kLowShadowBeg, kHighShadowEnd - kLowShadowBeg);
+ if (death_callback)
+ death_callback();
+ if (flags()->abort_on_error)
+ Abort();
+ Exit(flags()->exitcode);
+}
+
+void CheckFailed(const char *file, int line, const char *cond, u64 v1, u64 v2) {
+ AsanReport("AddressSanitizer CHECK failed: %s:%d \"%s\" (0x%zx, 0x%zx)\n",
+ file, line, cond, (uptr)v1, (uptr)v2);
+ PRINT_CURRENT_STACK();
+ ShowStatsAndAbort();
+}
-#include <new>
-#include <dlfcn.h>
-#include <execinfo.h>
-#include <fcntl.h>
-#include <pthread.h>
-#include <signal.h>
-#include <stdarg.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#ifndef ANDROID
-#include <sys/ucontext.h>
-#endif
-#include <sys/time.h>
-#include <sys/resource.h>
-#include <unistd.h>
-// must not include <setjmp.h> on Linux
+} // namespace __sanitizer
namespace __asan {
// -------------------------- Flags ------------------------- {{{1
-static const size_t kMallocContextSize = 30;
-static int FLAG_atexit;
-bool FLAG_fast_unwind = true;
-
-size_t FLAG_redzone; // power of two, >= 32
-size_t FLAG_quarantine_size;
-int FLAG_demangle;
-bool FLAG_symbolize;
-int FLAG_v;
-int FLAG_debug;
-bool FLAG_poison_shadow;
-int FLAG_report_globals;
-size_t FLAG_malloc_context_size = kMallocContextSize;
-uintptr_t FLAG_large_malloc;
-bool FLAG_lazy_shadow;
-bool FLAG_handle_segv;
-bool FLAG_handle_sigill;
-bool FLAG_replace_str;
-bool FLAG_replace_intrin;
-bool FLAG_replace_cfallocator; // Used on Mac only.
-size_t FLAG_max_malloc_fill_size = 0;
-bool FLAG_use_fake_stack;
-int FLAG_exitcode = EXIT_FAILURE;
-bool FLAG_allow_user_poisoning;
+static const int kMallocContextSize = 30;
+
+static Flags asan_flags;
+
+Flags *flags() {
+ return &asan_flags;
+}
+
+static void ParseFlagsFromString(Flags *f, const char *str) {
+ ParseFlag(str, &f->quarantine_size, "quarantine_size");
+ ParseFlag(str, &f->symbolize, "symbolize");
+ ParseFlag(str, &f->verbosity, "verbosity");
+ ParseFlag(str, &f->redzone, "redzone");
+ CHECK(f->redzone >= 16);
+ CHECK(IsPowerOfTwo(f->redzone));
+
+ ParseFlag(str, &f->debug, "debug");
+ ParseFlag(str, &f->report_globals, "report_globals");
+ ParseFlag(str, &f->malloc_context_size, "malloc_context_size");
+ CHECK(f->malloc_context_size <= kMallocContextSize);
+
+ ParseFlag(str, &f->replace_str, "replace_str");
+ ParseFlag(str, &f->replace_intrin, "replace_intrin");
+ ParseFlag(str, &f->replace_cfallocator, "replace_cfallocator");
+ ParseFlag(str, &f->mac_ignore_invalid_free, "mac_ignore_invalid_free");
+ ParseFlag(str, &f->use_fake_stack, "use_fake_stack");
+ ParseFlag(str, &f->max_malloc_fill_size, "max_malloc_fill_size");
+ ParseFlag(str, &f->exitcode, "exitcode");
+ ParseFlag(str, &f->allow_user_poisoning, "allow_user_poisoning");
+ ParseFlag(str, &f->sleep_before_dying, "sleep_before_dying");
+ ParseFlag(str, &f->handle_segv, "handle_segv");
+ ParseFlag(str, &f->use_sigaltstack, "use_sigaltstack");
+ ParseFlag(str, &f->check_malloc_usable_size, "check_malloc_usable_size");
+ ParseFlag(str, &f->unmap_shadow_on_exit, "unmap_shadow_on_exit");
+ ParseFlag(str, &f->abort_on_error, "abort_on_error");
+ ParseFlag(str, &f->atexit, "atexit");
+ ParseFlag(str, &f->disable_core, "disable_core");
+}
+
+extern "C" {
+const char* WEAK __asan_default_options() { return ""; }
+} // extern "C"
+
+void InitializeFlags(Flags *f, const char *env) {
+ internal_memset(f, 0, sizeof(*f));
+
+ f->quarantine_size = (ASAN_LOW_MEMORY) ? 1UL << 24 : 1UL << 28;
+ f->symbolize = false;
+ f->verbosity = 0;
+ f->redzone = (ASAN_LOW_MEMORY) ? 64 : 128;
+ f->debug = false;
+ f->report_globals = 1;
+ f->malloc_context_size = kMallocContextSize;
+ f->replace_str = true;
+ f->replace_intrin = true;
+ f->replace_cfallocator = true;
+ f->mac_ignore_invalid_free = false;
+ f->use_fake_stack = true;
+ f->max_malloc_fill_size = 0;
+ f->exitcode = ASAN_DEFAULT_FAILURE_EXITCODE;
+ f->allow_user_poisoning = true;
+ f->sleep_before_dying = 0;
+ f->handle_segv = ASAN_NEEDS_SEGV;
+ f->use_sigaltstack = false;
+ f->check_malloc_usable_size = true;
+ f->unmap_shadow_on_exit = false;
+ f->abort_on_error = false;
+ f->atexit = false;
+ f->disable_core = (__WORDSIZE == 64);
+
+ // Override from user-specified string.
+ ParseFlagsFromString(f, __asan_default_options());
+ if (flags()->verbosity) {
+ Report("Using the defaults from __asan_default_options: %s\n",
+ __asan_default_options());
+ }
+
+ // Override from command line.
+ ParseFlagsFromString(f, env);
+}
// -------------------------- Globals --------------------- {{{1
int asan_inited;
bool asan_init_is_running;
-
-// -------------------------- Interceptors ---------------- {{{1
-typedef int (*sigaction_f)(int signum, const struct sigaction *act,
- struct sigaction *oldact);
-typedef sig_t (*signal_f)(int signum, sig_t handler);
-typedef void (*longjmp_f)(void *env, int val);
-typedef longjmp_f _longjmp_f;
-typedef longjmp_f siglongjmp_f;
-typedef void (*__cxa_throw_f)(void *, void *, void *);
-typedef int (*pthread_create_f)(pthread_t *thread, const pthread_attr_t *attr,
- void *(*start_routine) (void *), void *arg);
-#ifdef __APPLE__
-dispatch_async_f_f real_dispatch_async_f;
-dispatch_sync_f_f real_dispatch_sync_f;
-dispatch_after_f_f real_dispatch_after_f;
-dispatch_barrier_async_f_f real_dispatch_barrier_async_f;
-dispatch_group_async_f_f real_dispatch_group_async_f;
-pthread_workqueue_additem_np_f real_pthread_workqueue_additem_np;
-#endif
-
-sigaction_f real_sigaction;
-signal_f real_signal;
-longjmp_f real_longjmp;
-_longjmp_f real__longjmp;
-siglongjmp_f real_siglongjmp;
-__cxa_throw_f real___cxa_throw;
-pthread_create_f real_pthread_create;
+void (*death_callback)(void);
+static void (*error_report_callback)(const char*);
+char *error_message_buffer = 0;
+uptr error_message_buffer_pos = 0;
+uptr error_message_buffer_size = 0;
// -------------------------- Misc ---------------- {{{1
void ShowStatsAndAbort() {
__asan_print_accumulated_stats();
- ASAN_DIE;
+ Die();
}
-static void PrintBytes(const char *before, uintptr_t *a) {
- uint8_t *bytes = (uint8_t*)a;
- size_t byte_num = (__WORDSIZE) / 8;
- Printf("%s%p:", before, (uintptr_t)a);
- for (size_t i = 0; i < byte_num; i++) {
- Printf(" %lx%lx", bytes[i] >> 4, bytes[i] & 15);
+static void PrintBytes(const char *before, uptr *a) {
+ u8 *bytes = (u8*)a;
+ uptr byte_num = (__WORDSIZE) / 8;
+ AsanPrintf("%s%p:", before, (void*)a);
+ for (uptr i = 0; i < byte_num; i++) {
+ AsanPrintf(" %x%x", bytes[i] >> 4, bytes[i] & 15);
}
- Printf("\n");
-}
-
-// Opens the file 'file_name" and reads up to 'max_len' bytes.
-// The resulting buffer is mmaped and stored in '*buff'.
-// Returns the number of read bytes or -1 if file can not be opened.
-static ssize_t ReadFileToBuffer(const char *file_name, char **buff,
- size_t max_len) {
- const size_t kMinFileLen = kPageSize;
- ssize_t read_len = -1;
- *buff = 0;
- size_t maped_size = 0;
- // The files we usually open are not seekable, so try different buffer sizes.
- for (size_t size = kMinFileLen; size <= max_len; size *= 2) {
- int fd = AsanOpenReadonly(file_name);
- if (fd < 0) return -1;
- AsanUnmapOrDie(*buff, maped_size);
- maped_size = size;
- *buff = (char*)AsanMmapSomewhereOrDie(size, __FUNCTION__);
- read_len = AsanRead(fd, *buff, size);
- AsanClose(fd);
- if (read_len < size) // We've read the whole file.
- break;
+ AsanPrintf("\n");
+}
+
+void AppendToErrorMessageBuffer(const char *buffer) {
+ if (error_message_buffer) {
+ uptr length = internal_strlen(buffer);
+ CHECK_GE(error_message_buffer_size, error_message_buffer_pos);
+ uptr remaining = error_message_buffer_size - error_message_buffer_pos;
+ internal_strncpy(error_message_buffer + error_message_buffer_pos,
+ buffer, remaining);
+ error_message_buffer[error_message_buffer_size - 1] = '\0';
+ // FIXME: reallocate the buffer instead of truncating the message.
+ error_message_buffer_pos += remaining > length ? length : remaining;
}
- return read_len;
-}
-
-// Like getenv, but reads env directly from /proc and does not use libc.
-// This function should be called first inside __asan_init.
-static const char* GetEnvFromProcSelfEnviron(const char* name) {
- static char *environ;
- static ssize_t len;
- static bool inited;
- if (!inited) {
- inited = true;
- len = ReadFileToBuffer("/proc/self/environ", &environ, 1 << 20);
- }
- if (!environ || len <= 0) return NULL;
- size_t namelen = internal_strlen(name);
- const char *p = environ;
- while (*p != '\0') { // will happen at the \0\0 that terminates the buffer
- // proc file has the format NAME=value\0NAME=value\0NAME=value\0...
- const char* endp =
- (char*)internal_memchr(p, '\0', len - (p - environ));
- if (endp == NULL) // this entry isn't NUL terminated
- return NULL;
- else if (!internal_memcmp(p, name, namelen) && p[namelen] == '=') // Match.
- return p + namelen + 1; // point after =
- p = endp + 1;
- }
- return NULL; // Not found.
-}
-
-// ---------------------- Thread ------------------------- {{{1
-static void *asan_thread_start(void *arg) {
- AsanThread *t= (AsanThread*)arg;
- asanThreadRegistry().SetCurrent(t);
- return t->ThreadStart();
}
// ---------------------- mmap -------------------- {{{1
-void OutOfMemoryMessageAndDie(const char *mem_type, size_t size) {
- Report("ERROR: AddressSanitizer failed to allocate "
- "0x%lx (%ld) bytes of %s\n",
- size, size, mem_type);
- PRINT_CURRENT_STACK();
- ShowStatsAndAbort();
-}
-
// Reserve memory range [beg, end].
-static void ReserveShadowMemoryRange(uintptr_t beg, uintptr_t end) {
+static void ReserveShadowMemoryRange(uptr beg, uptr end) {
CHECK((beg % kPageSize) == 0);
CHECK(((end + 1) % kPageSize) == 0);
- size_t size = end - beg + 1;
- void *res = AsanMmapFixedNoReserve(beg, size);
+ uptr size = end - beg + 1;
+ void *res = MmapFixedNoReserve(beg, size);
CHECK(res == (void*)beg && "ReserveShadowMemoryRange failed");
}
// ---------------------- LowLevelAllocator ------------- {{{1
-void *LowLevelAllocator::Allocate(size_t size) {
+void *LowLevelAllocator::Allocate(uptr size) {
CHECK((size & (size - 1)) == 0 && "size must be a power of two");
- if (allocated_end_ - allocated_current_ < size) {
- size_t size_to_allocate = Max(size, kPageSize);
+ if (allocated_end_ - allocated_current_ < (sptr)size) {
+ uptr size_to_allocate = Max(size, kPageSize);
allocated_current_ =
- (char*)AsanMmapSomewhereOrDie(size_to_allocate, __FUNCTION__);
+ (char*)MmapOrDie(size_to_allocate, __FUNCTION__);
allocated_end_ = allocated_current_ + size_to_allocate;
- PoisonShadow((uintptr_t)allocated_current_, size_to_allocate,
+ PoisonShadow((uptr)allocated_current_, size_to_allocate,
kAsanInternalHeapMagic);
}
- CHECK(allocated_end_ - allocated_current_ >= size);
+ CHECK(allocated_end_ - allocated_current_ >= (sptr)size);
void *res = allocated_current_;
allocated_current_ += size;
return res;
}
// ---------------------- DescribeAddress -------------------- {{{1
-static bool DescribeStackAddress(uintptr_t addr, uintptr_t access_size) {
+static bool DescribeStackAddress(uptr addr, uptr access_size) {
AsanThread *t = asanThreadRegistry().FindThreadByStackAddress(addr);
if (!t) return false;
- const intptr_t kBufSize = 4095;
+ const sptr kBufSize = 4095;
char buf[kBufSize];
- uintptr_t offset = 0;
+ uptr offset = 0;
const char *frame_descr = t->GetFrameNameByAddr(addr, &offset);
// This string is created by the compiler and has the following form:
// "FunctioName n alloc_1 alloc_2 ... alloc_n"
// where alloc_i looks like "offset size len ObjectName ".
CHECK(frame_descr);
// Report the function name and the offset.
- const char *name_end = real_strchr(frame_descr, ' ');
+ const char *name_end = internal_strchr(frame_descr, ' ');
CHECK(name_end);
buf[0] = 0;
- strncat(buf, frame_descr,
- Min(kBufSize, static_cast<intptr_t>(name_end - frame_descr)));
- Printf("Address %p is located at offset %ld "
- "in frame <%s> of T%d's stack:\n",
- addr, offset, buf, t->tid());
+ internal_strncat(buf, frame_descr,
+ Min(kBufSize,
+ static_cast<sptr>(name_end - frame_descr)));
+ AsanPrintf("Address %p is located at offset %zu "
+ "in frame <%s> of T%d's stack:\n",
+ (void*)addr, offset, buf, t->tid());
// Report the number of stack objects.
char *p;
- size_t n_objects = strtol(name_end, &p, 10);
+ uptr n_objects = internal_simple_strtoll(name_end, &p, 10);
CHECK(n_objects > 0);
- Printf(" This frame has %ld object(s):\n", n_objects);
+ AsanPrintf(" This frame has %zu object(s):\n", n_objects);
// Report all objects in this frame.
- for (size_t i = 0; i < n_objects; i++) {
- size_t beg, size;
- intptr_t len;
- beg = strtol(p, &p, 10);
- size = strtol(p, &p, 10);
- len = strtol(p, &p, 10);
+ for (uptr i = 0; i < n_objects; i++) {
+ uptr beg, size;
+ sptr len;
+ beg = internal_simple_strtoll(p, &p, 10);
+ size = internal_simple_strtoll(p, &p, 10);
+ len = internal_simple_strtoll(p, &p, 10);
if (beg <= 0 || size <= 0 || len < 0 || *p != ' ') {
- Printf("AddressSanitizer can't parse the stack frame descriptor: |%s|\n",
- frame_descr);
+ AsanPrintf("AddressSanitizer can't parse the stack frame "
+ "descriptor: |%s|\n", frame_descr);
break;
}
p++;
buf[0] = 0;
- strncat(buf, p, Min(kBufSize, len));
+ internal_strncat(buf, p, Min(kBufSize, len));
p += len;
- Printf(" [%ld, %ld) '%s'\n", beg, beg + size, buf);
+ AsanPrintf(" [%zu, %zu) '%s'\n", beg, beg + size, buf);
}
- Printf("HINT: this may be a false positive if your program uses "
- "some custom stack unwind mechanism\n"
- " (longjmp and C++ exceptions *are* supported)\n");
+ AsanPrintf("HINT: this may be a false positive if your program uses "
+ "some custom stack unwind mechanism\n"
+ " (longjmp and C++ exceptions *are* supported)\n");
t->summary()->Announce();
return true;
}
-__attribute__((noinline))
-static void DescribeAddress(uintptr_t addr, uintptr_t access_size) {
+static bool DescribeAddrIfShadow(uptr addr) {
+ if (AddrIsInMem(addr))
+ return false;
+ static const char kAddrInShadowReport[] =
+ "Address %p is located in the %s.\n";
+ if (AddrIsInShadowGap(addr)) {
+ AsanPrintf(kAddrInShadowReport, addr, "shadow gap area");
+ return true;
+ }
+ if (AddrIsInHighShadow(addr)) {
+ AsanPrintf(kAddrInShadowReport, addr, "high shadow area");
+ return true;
+ }
+ if (AddrIsInLowShadow(addr)) {
+ AsanPrintf(kAddrInShadowReport, addr, "low shadow area");
+ return true;
+ }
+
+ CHECK(0); // Unreachable.
+ return false;
+}
+
+static NOINLINE void DescribeAddress(uptr addr, uptr access_size) {
+ // Check if this is shadow or shadow gap.
+ if (DescribeAddrIfShadow(addr))
+ return;
+
+ CHECK(AddrIsInMem(addr));
+
// Check if this is a global.
if (DescribeAddrIfGlobal(addr))
return;
@@ -276,92 +298,12 @@ static void DescribeAddress(uintptr_t addr, uintptr_t access_size) {
}
// -------------------------- Run-time entry ------------------- {{{1
-void GetPcSpBpAx(void *context,
- uintptr_t *pc, uintptr_t *sp, uintptr_t *bp, uintptr_t *ax) {
-#ifndef ANDROID
- ucontext_t *ucontext = (ucontext_t*)context;
-#endif
-#ifdef __APPLE__
-# if __WORDSIZE == 64
- *pc = ucontext->uc_mcontext->__ss.__rip;
- *bp = ucontext->uc_mcontext->__ss.__rbp;
- *sp = ucontext->uc_mcontext->__ss.__rsp;
- *ax = ucontext->uc_mcontext->__ss.__rax;
-# else
- *pc = ucontext->uc_mcontext->__ss.__eip;
- *bp = ucontext->uc_mcontext->__ss.__ebp;
- *sp = ucontext->uc_mcontext->__ss.__esp;
- *ax = ucontext->uc_mcontext->__ss.__eax;
-# endif // __WORDSIZE
-#else // assume linux
-# if defined (ANDROID)
- *pc = *sp = *bp = *ax = 0;
-# elif defined(__arm__)
- *pc = ucontext->uc_mcontext.arm_pc;
- *bp = ucontext->uc_mcontext.arm_fp;
- *sp = ucontext->uc_mcontext.arm_sp;
- *ax = ucontext->uc_mcontext.arm_r0;
-# elif __WORDSIZE == 64
- *pc = ucontext->uc_mcontext.gregs[REG_RIP];
- *bp = ucontext->uc_mcontext.gregs[REG_RBP];
- *sp = ucontext->uc_mcontext.gregs[REG_RSP];
- *ax = ucontext->uc_mcontext.gregs[REG_RAX];
-# else
- *pc = ucontext->uc_mcontext.gregs[REG_EIP];
- *bp = ucontext->uc_mcontext.gregs[REG_EBP];
- *sp = ucontext->uc_mcontext.gregs[REG_ESP];
- *ax = ucontext->uc_mcontext.gregs[REG_EAX];
-# endif // __WORDSIZE
-#endif
-}
-
-static void ASAN_OnSIGSEGV(int, siginfo_t *siginfo, void *context) {
- uintptr_t addr = (uintptr_t)siginfo->si_addr;
- if (AddrIsInShadow(addr) && FLAG_lazy_shadow) {
- // We traped on access to a shadow address. Just map a large chunk around
- // this address.
- const uintptr_t chunk_size = kPageSize << 10; // 4M
- uintptr_t chunk = addr & ~(chunk_size - 1);
- AsanMmapFixedReserve(chunk, chunk_size);
- return;
- }
- // Write the first message using the bullet-proof write.
- if (13 != AsanWrite(2, "ASAN:SIGSEGV\n", 13)) ASAN_DIE;
- uintptr_t pc, sp, bp, ax;
- GetPcSpBpAx(context, &pc, &sp, &bp, &ax);
- Report("ERROR: AddressSanitizer crashed on unknown address %p"
- " (pc %p sp %p bp %p ax %p T%d)\n",
- addr, pc, sp, bp, ax,
- asanThreadRegistry().GetCurrentTidOrMinusOne());
- Printf("AddressSanitizer can not provide additional info. ABORTING\n");
- GET_STACK_TRACE_WITH_PC_AND_BP(kStackTraceMax, false, pc, bp);
- stack.PrintStack();
- ShowStatsAndAbort();
-}
-
-static void ASAN_OnSIGILL(int, siginfo_t *siginfo, void *context) {
- // Write the first message using the bullet-proof write.
- if (12 != AsanWrite(2, "ASAN:SIGILL\n", 12)) ASAN_DIE;
- uintptr_t pc, sp, bp, ax;
- GetPcSpBpAx(context, &pc, &sp, &bp, &ax);
-
- uintptr_t addr = ax;
-
- uint8_t *insn = (uint8_t*)pc;
- CHECK(insn[0] == 0x0f && insn[1] == 0x0b); // ud2
- unsigned access_size_and_type = insn[2] - 0x50;
- CHECK(access_size_and_type < 16);
- bool is_write = access_size_and_type & 8;
- int access_size = 1 << (access_size_and_type & 7);
- __asan_report_error(pc, bp, sp, addr, is_write, access_size);
-}
-
// exported functions
#define ASAN_REPORT_ERROR(type, is_write, size) \
-extern "C" void __asan_report_ ## type ## size(uintptr_t addr) \
- __attribute__((visibility("default"))) __attribute__((noinline)); \
-extern "C" void __asan_report_ ## type ## size(uintptr_t addr) { \
- GET_BP_PC_SP; \
+extern "C" NOINLINE INTERFACE_ATTRIBUTE \
+void __asan_report_ ## type ## size(uptr addr); \
+void __asan_report_ ## type ## size(uptr addr) { \
+ GET_CALLER_PC_BP_SP; \
__asan_report_error(pc, bp, sp, addr, is_write, size); \
}
@@ -381,210 +323,85 @@ ASAN_REPORT_ERROR(store, true, 16)
// dynamic libraries access the symbol even if it is not used by the executable
// itself. This should help if the build system is removing dead code at link
// time.
-static void force_interface_symbols() {
+static NOINLINE void force_interface_symbols() {
volatile int fake_condition = 0; // prevent dead condition elimination.
if (fake_condition) {
- __asan_report_load1(NULL);
- __asan_report_load2(NULL);
- __asan_report_load4(NULL);
- __asan_report_load8(NULL);
- __asan_report_load16(NULL);
- __asan_report_store1(NULL);
- __asan_report_store2(NULL);
- __asan_report_store4(NULL);
- __asan_report_store8(NULL);
- __asan_report_store16(NULL);
- __asan_register_global(0, 0, NULL);
- __asan_register_globals(NULL, 0);
- __asan_unregister_globals(NULL, 0);
+ __asan_report_load1(0);
+ __asan_report_load2(0);
+ __asan_report_load4(0);
+ __asan_report_load8(0);
+ __asan_report_load16(0);
+ __asan_report_store1(0);
+ __asan_report_store2(0);
+ __asan_report_store4(0);
+ __asan_report_store8(0);
+ __asan_report_store16(0);
+ __asan_register_global(0, 0, 0);
+ __asan_register_globals(0, 0);
+ __asan_unregister_globals(0, 0);
+ __asan_set_death_callback(0);
+ __asan_set_error_report_callback(0);
+ __asan_handle_no_return();
}
}
// -------------------------- Init ------------------- {{{1
-static int64_t IntFlagValue(const char *flags, const char *flag,
- int64_t default_val) {
- if (!flags) return default_val;
- const char *str = strstr(flags, flag);
- if (!str) return default_val;
- return atoll(str + internal_strlen(flag));
-}
-
static void asan_atexit() {
- Printf("AddressSanitizer exit stats:\n");
+ AsanPrintf("AddressSanitizer exit stats:\n");
__asan_print_accumulated_stats();
}
-void CheckFailed(const char *cond, const char *file, int line) {
- Report("CHECK failed: %s at %s:%d, pthread_self=%p\n",
- cond, file, line, pthread_self());
- PRINT_CURRENT_STACK();
- ShowStatsAndAbort();
-}
-
} // namespace __asan
-// -------------------------- Interceptors ------------------- {{{1
+// ---------------------- Interface ---------------- {{{1
using namespace __asan; // NOLINT
-#define OPERATOR_NEW_BODY \
- GET_STACK_TRACE_HERE_FOR_MALLOC;\
- return asan_memalign(0, size, &stack);
-
-#ifdef ANDROID
-void *operator new(size_t size) { OPERATOR_NEW_BODY; }
-void *operator new[](size_t size) { OPERATOR_NEW_BODY; }
-#else
-void *operator new(size_t size) throw(std::bad_alloc) { OPERATOR_NEW_BODY; }
-void *operator new[](size_t size) throw(std::bad_alloc) { OPERATOR_NEW_BODY; }
-void *operator new(size_t size, std::nothrow_t const&) throw()
-{ OPERATOR_NEW_BODY; }
-void *operator new[](size_t size, std::nothrow_t const&) throw()
-{ OPERATOR_NEW_BODY; }
-#endif
-
-#define OPERATOR_DELETE_BODY \
- GET_STACK_TRACE_HERE_FOR_FREE(ptr);\
- asan_free(ptr, &stack);
-
-void operator delete(void *ptr) throw() { OPERATOR_DELETE_BODY; }
-void operator delete[](void *ptr) throw() { OPERATOR_DELETE_BODY; }
-void operator delete(void *ptr, std::nothrow_t const&) throw()
-{ OPERATOR_DELETE_BODY; }
-void operator delete[](void *ptr, std::nothrow_t const&) throw()
-{ OPERATOR_DELETE_BODY;}
-
-extern "C"
-#ifndef __APPLE__
-__attribute__((visibility("default")))
-#endif
-int WRAP(pthread_create)(pthread_t *thread, const pthread_attr_t *attr,
- void *(*start_routine) (void *), void *arg) {
- GET_STACK_TRACE_HERE(kStackTraceMax, /*fast_unwind*/false);
- AsanThread *t = (AsanThread*)asan_malloc(sizeof(AsanThread), &stack);
- AsanThread *curr_thread = asanThreadRegistry().GetCurrent();
- CHECK(curr_thread || asanThreadRegistry().IsCurrentThreadDying());
- new(t) AsanThread(asanThreadRegistry().GetCurrentTidOrMinusOne(),
- start_routine, arg, &stack);
- return real_pthread_create(thread, attr, asan_thread_start, t);
-}
-
-static bool MySignal(int signum) {
- if (FLAG_handle_sigill && signum == SIGILL) return true;
- if (FLAG_handle_segv && signum == SIGSEGV) return true;
-#ifdef __APPLE__
- if (FLAG_handle_segv && signum == SIGBUS) return true;
-#endif
- return false;
-}
-
-static void MaybeInstallSigaction(int signum,
- void (*handler)(int, siginfo_t *, void *)) {
- if (!MySignal(signum))
- return;
- struct sigaction sigact;
- real_memset(&sigact, 0, sizeof(sigact));
- sigact.sa_sigaction = handler;
- sigact.sa_flags = SA_SIGINFO;
- CHECK(0 == real_sigaction(signum, &sigact, 0));
-}
-
-extern "C"
-sig_t WRAP(signal)(int signum, sig_t handler) {
- if (!MySignal(signum)) {
- return real_signal(signum, handler);
- }
- return NULL;
-}
-
-extern "C"
-int WRAP(sigaction)(int signum, const struct sigaction *act,
- struct sigaction *oldact) {
- if (!MySignal(signum)) {
- return real_sigaction(signum, act, oldact);
- }
- return 0;
+int __asan_set_error_exit_code(int exit_code) {
+ int old = flags()->exitcode;
+ flags()->exitcode = exit_code;
+ return old;
}
-
-static void UnpoisonStackFromHereToTop() {
+void NOINLINE __asan_handle_no_return() {
int local_stack;
AsanThread *curr_thread = asanThreadRegistry().GetCurrent();
CHECK(curr_thread);
- uintptr_t top = curr_thread->stack_top();
- uintptr_t bottom = ((uintptr_t)&local_stack - kPageSize) & ~(kPageSize-1);
+ uptr top = curr_thread->stack_top();
+ uptr bottom = ((uptr)&local_stack - kPageSize) & ~(kPageSize-1);
PoisonShadow(bottom, top - bottom, 0);
}
-extern "C" void WRAP(longjmp)(void *env, int val) {
- UnpoisonStackFromHereToTop();
- real_longjmp(env, val);
+void NOINLINE __asan_set_death_callback(void (*callback)(void)) {
+ death_callback = callback;
}
-extern "C" void WRAP(_longjmp)(void *env, int val) {
- UnpoisonStackFromHereToTop();
- real__longjmp(env, val);
-}
-
-extern "C" void WRAP(siglongjmp)(void *env, int val) {
- UnpoisonStackFromHereToTop();
- real_siglongjmp(env, val);
-}
-
-extern "C" void __cxa_throw(void *a, void *b, void *c);
-
-#if ASAN_HAS_EXCEPTIONS == 1
-extern "C" void WRAP(__cxa_throw)(void *a, void *b, void *c) {
- CHECK(&real___cxa_throw);
- UnpoisonStackFromHereToTop();
- real___cxa_throw(a, b, c);
-}
-#endif
-
-extern "C" {
-// intercept mlock and friends.
-// Since asan maps 16T of RAM, mlock is completely unfriendly to asan.
-// All functions return 0 (success).
-static void MlockIsUnsupported() {
- static bool printed = 0;
- if (printed) return;
- printed = true;
- Printf("INFO: AddressSanitizer ignores mlock/mlockall/munlock/munlockall\n");
-}
-int mlock(const void *addr, size_t len) {
- MlockIsUnsupported();
- return 0;
-}
-int munlock(const void *addr, size_t len) {
- MlockIsUnsupported();
- return 0;
-}
-int mlockall(int flags) {
- MlockIsUnsupported();
- return 0;
-}
-int munlockall(void) {
- MlockIsUnsupported();
- return 0;
-}
-} // extern "C"
-
-// ---------------------- Interface ---------------- {{{1
-int __asan_set_error_exit_code(int exit_code) {
- int old = FLAG_exitcode;
- FLAG_exitcode = exit_code;
- return old;
+void NOINLINE __asan_set_error_report_callback(void (*callback)(const char*)) {
+ error_report_callback = callback;
+ if (callback) {
+ error_message_buffer_size = 1 << 16;
+ error_message_buffer =
+ (char*)MmapOrDie(error_message_buffer_size, __FUNCTION__);
+ error_message_buffer_pos = 0;
+ }
}
-void __asan_report_error(uintptr_t pc, uintptr_t bp, uintptr_t sp,
- uintptr_t addr, bool is_write, size_t access_size) {
- // Do not print more than one report, otherwise they will mix up.
- static int num_calls = 0;
- if (AtomicInc(&num_calls) > 1) return;
+void __asan_report_error(uptr pc, uptr bp, uptr sp,
+ uptr addr, bool is_write, uptr access_size) {
+ static atomic_uint32_t num_calls;
+ if (atomic_fetch_add(&num_calls, 1, memory_order_relaxed) != 0) {
+ // Do not print more than one report, otherwise they will mix up.
+ // We can not return here because the function is marked as never-return.
+ AsanPrintf("AddressSanitizer: while reporting a bug found another one."
+ "Ignoring.\n");
+ SleepForSeconds(5);
+ Die();
+ }
- Printf("=================================================================\n");
+ AsanPrintf("===================================================="
+ "=============\n");
const char *bug_descr = "unknown-crash";
if (AddrIsInMem(addr)) {
- uint8_t *shadow_addr = (uint8_t*)MemToShadow(addr);
+ u8 *shadow_addr = (u8*)MemToShadow(addr);
// If we are accessing 16 bytes, look at the second shadow byte.
if (*shadow_addr == 0 && access_size > SHADOW_GRANULARITY)
shadow_addr++;
@@ -620,7 +437,7 @@ void __asan_report_error(uintptr_t pc, uintptr_t bp, uintptr_t sp,
}
AsanThread *curr_thread = asanThreadRegistry().GetCurrent();
- int curr_tid = asanThreadRegistry().GetCurrentTidOrMinusOne();
+ u32 curr_tid = asanThreadRegistry().GetCurrentTidOrInvalid();
if (curr_thread) {
// We started reporting an error message. Stop using the fake stack
@@ -628,47 +445,49 @@ void __asan_report_error(uintptr_t pc, uintptr_t bp, uintptr_t sp,
curr_thread->fake_stack().StopUsingFakeStack();
}
- Report("ERROR: AddressSanitizer %s on address "
- "%p at pc 0x%lx bp 0x%lx sp 0x%lx\n",
- bug_descr, addr, pc, bp, sp);
+ AsanReport("ERROR: AddressSanitizer %s on address "
+ "%p at pc 0x%zx bp 0x%zx sp 0x%zx\n",
+ bug_descr, (void*)addr, pc, bp, sp);
- Printf("%s of size %d at %p thread T%d\n",
- access_size ? (is_write ? "WRITE" : "READ") : "ACCESS",
- access_size, addr, curr_tid);
+ AsanPrintf("%s of size %zu at %p thread T%d\n",
+ access_size ? (is_write ? "WRITE" : "READ") : "ACCESS",
+ access_size, (void*)addr, curr_tid);
- if (FLAG_debug) {
- PrintBytes("PC: ", (uintptr_t*)pc);
+ if (flags()->debug) {
+ PrintBytes("PC: ", (uptr*)pc);
}
- GET_STACK_TRACE_WITH_PC_AND_BP(kStackTraceMax,
- false, // FLAG_fast_unwind,
- pc, bp);
+ GET_STACK_TRACE_WITH_PC_AND_BP(kStackTraceMax, pc, bp);
stack.PrintStack();
- CHECK(AddrIsInMem(addr));
-
DescribeAddress(addr, access_size);
- uintptr_t shadow_addr = MemToShadow(addr);
- Report("ABORTING\n");
- __asan_print_accumulated_stats();
- Printf("Shadow byte and word:\n");
- Printf(" %p: %x\n", shadow_addr, *(unsigned char*)shadow_addr);
- uintptr_t aligned_shadow = shadow_addr & ~(kWordSize - 1);
- PrintBytes(" ", (uintptr_t*)(aligned_shadow));
- Printf("More shadow bytes:\n");
- PrintBytes(" ", (uintptr_t*)(aligned_shadow-4*kWordSize));
- PrintBytes(" ", (uintptr_t*)(aligned_shadow-3*kWordSize));
- PrintBytes(" ", (uintptr_t*)(aligned_shadow-2*kWordSize));
- PrintBytes(" ", (uintptr_t*)(aligned_shadow-1*kWordSize));
- PrintBytes("=>", (uintptr_t*)(aligned_shadow+0*kWordSize));
- PrintBytes(" ", (uintptr_t*)(aligned_shadow+1*kWordSize));
- PrintBytes(" ", (uintptr_t*)(aligned_shadow+2*kWordSize));
- PrintBytes(" ", (uintptr_t*)(aligned_shadow+3*kWordSize));
- PrintBytes(" ", (uintptr_t*)(aligned_shadow+4*kWordSize));
- ASAN_DIE;
+ if (AddrIsInMem(addr)) {
+ uptr shadow_addr = MemToShadow(addr);
+ AsanReport("ABORTING\n");
+ __asan_print_accumulated_stats();
+ AsanPrintf("Shadow byte and word:\n");
+ AsanPrintf(" %p: %x\n", (void*)shadow_addr, *(unsigned char*)shadow_addr);
+ uptr aligned_shadow = shadow_addr & ~(kWordSize - 1);
+ PrintBytes(" ", (uptr*)(aligned_shadow));
+ AsanPrintf("More shadow bytes:\n");
+ PrintBytes(" ", (uptr*)(aligned_shadow-4*kWordSize));
+ PrintBytes(" ", (uptr*)(aligned_shadow-3*kWordSize));
+ PrintBytes(" ", (uptr*)(aligned_shadow-2*kWordSize));
+ PrintBytes(" ", (uptr*)(aligned_shadow-1*kWordSize));
+ PrintBytes("=>", (uptr*)(aligned_shadow+0*kWordSize));
+ PrintBytes(" ", (uptr*)(aligned_shadow+1*kWordSize));
+ PrintBytes(" ", (uptr*)(aligned_shadow+2*kWordSize));
+ PrintBytes(" ", (uptr*)(aligned_shadow+3*kWordSize));
+ PrintBytes(" ", (uptr*)(aligned_shadow+4*kWordSize));
+ }
+ if (error_report_callback) {
+ error_report_callback(error_message_buffer);
+ }
+ Die();
}
+
void __asan_init() {
if (asan_inited) return;
asan_init_is_running = true;
@@ -676,125 +495,75 @@ void __asan_init() {
// Make sure we are not statically linked.
AsanDoesNotSupportStaticLinkage();
- // flags
- const char *options = GetEnvFromProcSelfEnviron("ASAN_OPTIONS");
- FLAG_malloc_context_size =
- IntFlagValue(options, "malloc_context_size=", kMallocContextSize);
- CHECK(FLAG_malloc_context_size <= kMallocContextSize);
-
- FLAG_max_malloc_fill_size =
- IntFlagValue(options, "max_malloc_fill_size=", 0);
-
- FLAG_v = IntFlagValue(options, "verbosity=", 0);
-
- FLAG_redzone = IntFlagValue(options, "redzone=", 128);
- CHECK(FLAG_redzone >= 32);
- CHECK((FLAG_redzone & (FLAG_redzone - 1)) == 0);
-
- FLAG_atexit = IntFlagValue(options, "atexit=", 0);
- FLAG_poison_shadow = IntFlagValue(options, "poison_shadow=", 1);
- FLAG_report_globals = IntFlagValue(options, "report_globals=", 1);
- FLAG_lazy_shadow = IntFlagValue(options, "lazy_shadow=", 0);
- FLAG_handle_segv = IntFlagValue(options, "handle_segv=", ASAN_NEEDS_SEGV);
- FLAG_handle_sigill = IntFlagValue(options, "handle_sigill=", 0);
- FLAG_symbolize = IntFlagValue(options, "symbolize=", 1);
- FLAG_demangle = IntFlagValue(options, "demangle=", 1);
- FLAG_debug = IntFlagValue(options, "debug=", 0);
- FLAG_replace_cfallocator = IntFlagValue(options, "replace_cfallocator=", 1);
- FLAG_fast_unwind = IntFlagValue(options, "fast_unwind=", 1);
- FLAG_replace_str = IntFlagValue(options, "replace_str=", 1);
- FLAG_replace_intrin = IntFlagValue(options, "replace_intrin=", 1);
- FLAG_use_fake_stack = IntFlagValue(options, "use_fake_stack=", 1);
- FLAG_exitcode = IntFlagValue(options, "exitcode=", EXIT_FAILURE);
- FLAG_allow_user_poisoning = IntFlagValue(options,
- "allow_user_poisoning=", 1);
-
- if (FLAG_atexit) {
- atexit(asan_atexit);
+ // Initialize flags.
+ const char *options = GetEnv("ASAN_OPTIONS");
+ InitializeFlags(flags(), options);
+
+ if (flags()->verbosity && options) {
+ Report("Parsed ASAN_OPTIONS: %s\n", options);
}
- FLAG_quarantine_size =
- IntFlagValue(options, "quarantine_size=", 1UL << 28);
+ if (flags()->atexit) {
+ Atexit(asan_atexit);
+ }
// interceptors
InitializeAsanInterceptors();
ReplaceSystemMalloc();
+ ReplaceOperatorsNewAndDelete();
- INTERCEPT_FUNCTION(sigaction);
- INTERCEPT_FUNCTION(signal);
- INTERCEPT_FUNCTION(longjmp);
- INTERCEPT_FUNCTION(_longjmp);
- INTERCEPT_FUNCTION_IF_EXISTS(__cxa_throw);
- INTERCEPT_FUNCTION(pthread_create);
-#ifdef __APPLE__
- INTERCEPT_FUNCTION(dispatch_async_f);
- INTERCEPT_FUNCTION(dispatch_sync_f);
- INTERCEPT_FUNCTION(dispatch_after_f);
- INTERCEPT_FUNCTION(dispatch_barrier_async_f);
- INTERCEPT_FUNCTION(dispatch_group_async_f);
- // We don't need to intercept pthread_workqueue_additem_np() to support the
- // libdispatch API, but it helps us to debug the unsupported functions. Let's
- // intercept it only during verbose runs.
- if (FLAG_v >= 2) {
- INTERCEPT_FUNCTION(pthread_workqueue_additem_np);
- }
-#else
- // On Darwin siglongjmp tailcalls longjmp, so we don't want to intercept it
- // there.
- INTERCEPT_FUNCTION(siglongjmp);
-#endif
-
- MaybeInstallSigaction(SIGSEGV, ASAN_OnSIGSEGV);
- MaybeInstallSigaction(SIGBUS, ASAN_OnSIGSEGV);
- MaybeInstallSigaction(SIGILL, ASAN_OnSIGILL);
-
- if (FLAG_v) {
- Printf("|| `[%p, %p]` || HighMem ||\n", kHighMemBeg, kHighMemEnd);
+ if (flags()->verbosity) {
+ Printf("|| `[%p, %p]` || HighMem ||\n",
+ (void*)kHighMemBeg, (void*)kHighMemEnd);
Printf("|| `[%p, %p]` || HighShadow ||\n",
- kHighShadowBeg, kHighShadowEnd);
+ (void*)kHighShadowBeg, (void*)kHighShadowEnd);
Printf("|| `[%p, %p]` || ShadowGap ||\n",
- kShadowGapBeg, kShadowGapEnd);
+ (void*)kShadowGapBeg, (void*)kShadowGapEnd);
Printf("|| `[%p, %p]` || LowShadow ||\n",
- kLowShadowBeg, kLowShadowEnd);
- Printf("|| `[%p, %p]` || LowMem ||\n", kLowMemBeg, kLowMemEnd);
+ (void*)kLowShadowBeg, (void*)kLowShadowEnd);
+ Printf("|| `[%p, %p]` || LowMem ||\n",
+ (void*)kLowMemBeg, (void*)kLowMemEnd);
Printf("MemToShadow(shadow): %p %p %p %p\n",
- MEM_TO_SHADOW(kLowShadowBeg),
- MEM_TO_SHADOW(kLowShadowEnd),
- MEM_TO_SHADOW(kHighShadowBeg),
- MEM_TO_SHADOW(kHighShadowEnd));
- Printf("red_zone=%ld\n", FLAG_redzone);
- Printf("malloc_context_size=%ld\n", (int)FLAG_malloc_context_size);
- Printf("fast_unwind=%d\n", (int)FLAG_fast_unwind);
-
- Printf("SHADOW_SCALE: %lx\n", SHADOW_SCALE);
- Printf("SHADOW_GRANULARITY: %lx\n", SHADOW_GRANULARITY);
- Printf("SHADOW_OFFSET: %lx\n", SHADOW_OFFSET);
+ (void*)MEM_TO_SHADOW(kLowShadowBeg),
+ (void*)MEM_TO_SHADOW(kLowShadowEnd),
+ (void*)MEM_TO_SHADOW(kHighShadowBeg),
+ (void*)MEM_TO_SHADOW(kHighShadowEnd));
+ Printf("red_zone=%zu\n", (uptr)flags()->redzone);
+ Printf("malloc_context_size=%zu\n", (uptr)flags()->malloc_context_size);
+
+ Printf("SHADOW_SCALE: %zx\n", (uptr)SHADOW_SCALE);
+ Printf("SHADOW_GRANULARITY: %zx\n", (uptr)SHADOW_GRANULARITY);
+ Printf("SHADOW_OFFSET: %zx\n", (uptr)SHADOW_OFFSET);
CHECK(SHADOW_SCALE >= 3 && SHADOW_SCALE <= 7);
}
- if (__WORDSIZE == 64) {
- // Disable core dumper -- it makes little sense to dump 16T+ core.
- struct rlimit nocore;
- nocore.rlim_cur = 0;
- nocore.rlim_max = 0;
- setrlimit(RLIMIT_CORE, &nocore);
+ if (flags()->disable_core) {
+ DisableCoreDumper();
}
- {
- if (!FLAG_lazy_shadow) {
- if (kLowShadowBeg != kLowShadowEnd) {
- // mmap the low shadow plus one page.
- ReserveShadowMemoryRange(kLowShadowBeg - kPageSize, kLowShadowEnd);
- }
- // mmap the high shadow.
- ReserveShadowMemoryRange(kHighShadowBeg, kHighShadowEnd);
+ uptr shadow_start = kLowShadowBeg;
+ if (kLowShadowBeg > 0) shadow_start -= kMmapGranularity;
+ uptr shadow_end = kHighShadowEnd;
+ if (MemoryRangeIsAvailable(shadow_start, shadow_end)) {
+ if (kLowShadowBeg != kLowShadowEnd) {
+ // mmap the low shadow plus at least one page.
+ ReserveShadowMemoryRange(kLowShadowBeg - kMmapGranularity, kLowShadowEnd);
}
+ // mmap the high shadow.
+ ReserveShadowMemoryRange(kHighShadowBeg, kHighShadowEnd);
// protect the gap
- void *prot = AsanMprotect(kShadowGapBeg, kShadowGapEnd - kShadowGapBeg + 1);
+ void *prot = Mprotect(kShadowGapBeg, kShadowGapEnd - kShadowGapBeg + 1);
CHECK(prot == (void*)kShadowGapBeg);
+ } else {
+ Report("Shadow memory range interleaves with an existing memory mapping. "
+ "ASan cannot proceed correctly. ABORTING.\n");
+ DumpProcessMap();
+ Die();
}
+ InstallSignalHandlers();
+
// On Linux AsanThread::ThreadStart() calls malloc() that's why asan_inited
// should be set to 1 prior to initializing the threads.
asan_inited = 1;
@@ -804,7 +573,21 @@ void __asan_init() {
asanThreadRegistry().GetMain()->ThreadStart();
force_interface_symbols(); // no-op.
- if (FLAG_v) {
+ if (flags()->verbosity) {
Report("AddressSanitizer Init done\n");
}
}
+
+#if defined(ASAN_USE_PREINIT_ARRAY)
+ // On Linux, we force __asan_init to be called before anyone else
+ // by placing it into .preinit_array section.
+ // FIXME: do we have anything like this on Mac?
+ __attribute__((section(".preinit_array")))
+ typeof(__asan_init) *__asan_preinit =__asan_init;
+#elif defined(_WIN32) && defined(_DLL)
+ // On Windows, when using dynamic CRT (/MD), we can put a pointer
+ // to __asan_init into the global list of C initializers.
+ // See crt0dat.c in the CRT sources for the details.
+ #pragma section(".CRT$XIB", long, read) // NOLINT
+ __declspec(allocate(".CRT$XIB")) void (*__asan_preinit)() = __asan_init;
+#endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-24 09:39:06 +0000