Changes in lsan_common_mac.cpp

8246b2e1 - [Sanitizers][Darwin] Replace SANITIZER_MAC with SANITIZER_APPLE in source files

Mon, 23 May 2022 21:35:42 +0000

[Sanitizers][Darwin] Replace SANITIZER_MAC with SANITIZER_APPLE in source filesThis 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 sourcesDifferential Revision: https://reviews.llvm.org/D126263 List of files: /llvm-project-15.0.7/compiler-rt/lib/lsan/lsan_common_mac.cpp

6f480655 - [ASan][Darwin] Avoid crash during ASan initialization

Thu, 23 Dec 2021 06:30:46 +0000

[ASan][Darwin] Avoid crash during ASan initializationAlways pass `depth=1` to `vm_region_recurse_64()`. `depth` is a in-outparameter and gets reset to 0 after the first call, so we incorrectlypass `depth=0` on subsequent calls.We want to avoid the following crash:```Exception Type: EXC_BAD_ACCESS (SIGSEGV)Exception Subtype: KERN_INVALID_ADDRESS at 0x0000000180000000Exception Codes: 0x0000000000000001, 0x0000000180000000VM 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 processTermination Reason: SIGNAL 11 Segmentation fault: 11Terminating 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/86773501Differential Revision: https://reviews.llvm.org/D116240 List of files: /llvm-project-15.0.7/compiler-rt/lib/lsan/lsan_common_mac.cpp

061f22dd - [NFC][lsan] Refactor LockThreadRegistry/LockAllocator calls

Tue, 07 Dec 2021 06:22:04 +0000

[NFC][lsan] Refactor LockThreadRegistry/LockAllocator calls List of files: /llvm-project-15.0.7/compiler-rt/lib/lsan/lsan_common_mac.cpp

64d44208 - [NFC][lsan] Simplify root_regions initialization

Fri, 12 Nov 2021 07:32:58 +0000

[NFC][lsan] Simplify root_regions initialization List of files: /llvm-project-15.0.7/compiler-rt/lib/lsan/lsan_common_mac.cpp

aae707cd - [lsan] Expose Frontier object to OS-specific LockStuffAndStopTheWorld callback

Sat, 25 Jan 2020 00:52:12 +0000

[lsan] Expose Frontier object to OS-specific LockStuffAndStopTheWorld callbackThis is a small refactoring to prepare for porting LSan to Fuchsia.On Fuchsia, the system supplies a unified API for suspending threads andenumerating roots from OS-specific places like thread state and global dataranges. So its LockStuffAndStopTheWorld implementation will make specificcallbacks for all the OS-specific root collection work before making thecommon callback that includes the actual leak-checking logic.Patch By: mcgrathrDifferential Revision: https://reviews.llvm.org/D72988 List of files: /llvm-project-15.0.7/compiler-rt/lib/lsan/lsan_common_mac.cpp

f1b6bd40 - [lsan] Fix deadlock in dl_iterate_phdr.

Thu, 19 Sep 2019 19:52:57 +0000

[lsan] Fix deadlock in dl_iterate_phdr.Summary:Do not grab the allocator lock before calling dl_iterate_phdr. This maycause a lock order inversion with (valid) user code that uses mallocinside a dl_iterate_phdr callback.Reviewers: vitalybuka, hctimSubscribers: jfb, #sanitizers, llvm-commitsTags: #sanitizers, #llvmDifferential Revision: https://reviews.llvm.org/D67738llvm-svn: 372348 List of files: /llvm-project-15.0.7/compiler-rt/lib/lsan/lsan_common_mac.cpp

ae1fc9ba - compiler-rt: Rename .cc file in lib/lsan to .cpp

Thu, 01 Aug 2019 14:01:30 +0000

compiler-rt: Rename .cc file in lib/lsan to .cppLike r367463, but for lsan.llvm-svn: 367561 List of files: /llvm-project-15.0.7/compiler-rt/lib/lsan/lsan_common_mac.cpp