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8 Commits

Author SHA1 Message Date
Julian Lettner 18e4674ea6 [Sanitizer][Darwin] Fix log-path_test.cpp 
In my previous change [1], I added log output that made a test that
expected "no output" fail.  The easiest solution is to only print the
new hint/warning when we at least ask for `verbosity=1`.

[1] https://reviews.llvm.org/D128936

Radar-Id: rdar://96437354
 2022-07-05 16:34:55 -07:00
Julian Lettner 3abf3df08a [Sanitizer][Darwin] Lookup dyld image header via shared cache 
On macOS 13+, dyld itself has moved into the shared cache.  Looking it
up via vm_region_recurse_64() now causes spins/hangs/crashes.  We use a
different set of dyld APIs to find the image header in the shared cache.

rdar://92131949

Differential Revision: https://reviews.llvm.org/D128936
 2022-06-30 15:45:25 -07:00
Mariusz Borsa 8246b2e156 [Sanitizers][Darwin] Replace SANITIZER_MAC with SANITIZER_APPLE in source files 
This is a follow up to [Sanitizers][Darwin] Rename Apple macro SANITIZER_MAC -> SANITIZER_APPLE (D125816)

Performed a global search/replace as in title against LLVM sources

Differential Revision: https://reviews.llvm.org/D126263
 2022-05-24 12:59:27 -07:00
Julian Lettner 6f480655e6 [ASan][Darwin] Avoid crash during ASan initialization 
Always pass `depth=1` to `vm_region_recurse_64()`.  `depth` is a in-out
parameter and gets reset to 0 after the first call, so we incorrectly
pass `depth=0` on subsequent calls.

We want to avoid the following crash:
```
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Subtype: KERN_INVALID_ADDRESS at 0x0000000180000000
Exception Codes: 0x0000000000000001, 0x0000000180000000
VM Region Info: 0x180000000 is not in any region. Bytes after previous region: 277577729 Bytes before following region: 384270336
   REGION TYPE         START - END   [ VSIZE] PRT/MAX SHRMOD REGION DETAIL
   Stack          16f64c000-16f748000 [ 1008K] rw-/rwx SM=PRV thread 0
---> GAP OF 0x27730000 BYTES
   unused shlib __TEXT   196e78000-196eac000 [ 208K] r-x/r-x SM=COW ... this process
Termination Reason: SIGNAL 11 Segmentation fault: 11
Terminating Process: exc handler [767]
```

Crashing code:
```
static mach_header *get_dyld_image_header() {
 unsigned depth = 1;
 vm_size_t size = 0;
 vm_address_t address = 0;
 kern_return_t err = KERN_SUCCESS;
 mach_msg_type_number_t count = VM_REGION_SUBMAP_INFO_COUNT_64;

 while (true) {
  struct vm_region_submap_info_64 info;
  err = vm_region_recurse_64(mach_task_self(), &address, &size, &depth,
                (vm_region_info_t)&info, &count);
  if (err != KERN_SUCCESS) return nullptr;

  if (size >= sizeof(mach_header) && info.protection & kProtectionRead) {
   mach_header *hdr = (mach_header *)address;
   if ((hdr->magic == MH_MAGIC || hdr->magic == MH_MAGIC_64) &&   // << CRASH: sanitizer_procmaps_mac.cpp:176
     hdr->filetype == MH_DYLINKER) {
    return hdr;
   }
  }
  address += size;
 }
}
```

Radar-Id: rdar://problem/86773501

Differential Revision: https://reviews.llvm.org/D116240
 2022-01-07 12:28:38 -08:00
Vitaly Buka f5e6182ce6 [sanitizer][NFC] Remove InternalScopedString::size() 
size() is inconsistent with length().
In most size() use cases we can replace InternalScopedString with
InternalMmapVector.

Remove non-constant data() to avoid direct manipulations of internal
buffer. append() should be enought to modify InternalScopedString.
 2021-03-16 14:11:59 -07:00
Vitaly Buka 92002bd75b Fix mac build 
llvm-svn: 371680
 2019-09-11 22:19:18 +00:00
Vitaly Buka 48eb4a27d1 Update compiler-rt cpplint.py 
adb3500107

llvm-svn: 371675
 2019-09-11 21:33:06 +00:00
Nico Weber 65492d959b compiler-rt: Rename .cc file in lib/sanitizer_common to .cpp 
See https://reviews.llvm.org/D58620 for discussion, and for the commands
I ran. In addition I also ran

  for f in $(svn diff | diffstat | grep .cc | cut -f 2 -d ' '); do rg $f . ; done

and manually updated (many) references to renamed files found by that.

llvm-svn: 367463
 2019-07-31 18:51:27 +00:00