[sanitizer] Suggest checking ulimit -d in addition to ulimit -v #98625
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Since Linux 4.7, RLIMIT_DATA may result in mmap() returning ENOMEM.
Example:
$ clang -fsanitize=address -o hello hello.c
$ ulimit -d 100000
$ ./hello
==3349007==ERROR: AddressSanitizer failed to allocate 0x10000000 (268435456) bytes at address 7fff7000 (errno: 12)
==3349007==ReserveShadowMemoryRange failed while trying to map 0x10000000 bytes. Perhaps you're using ulimit -v
Suggest checking ulimit -d in addition to ulimit -v.
|
@llvm/pr-subscribers-compiler-rt-sanitizer Author: Ilya Leoshkevich (iii-i) ChangesSince Linux 4.7, RLIMIT_DATA may result in mmap() returning ENOMEM. Example: Suggest checking ulimit -d in addition to ulimit -v. Full diff: https://github.com/llvm/llvm-project/pull/98625.diff 1 Files Affected:
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_common_libcdep.cpp b/compiler-rt/lib/sanitizer_common/sanitizer_common_libcdep.cpp
index a174ae7be991d..3966d82d51ee9 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_common_libcdep.cpp
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_common_libcdep.cpp
@@ -169,7 +169,7 @@ void ReserveShadowMemoryRange(uptr beg, uptr end, const char *name,
: !MmapFixedNoReserve(beg, size, name)) {
Report(
"ReserveShadowMemoryRange failed while trying to map 0x%zx bytes. "
- "Perhaps you're using ulimit -v\n",
+ "Perhaps you're using ulimit -v or ulimit -d\n",
size);
Abort();
}
|
vitalybuka
reviewed
Jul 12, 2024
| @@ -169,7 +169,7 @@ void ReserveShadowMemoryRange(uptr beg, uptr end, const char *name, | |||
| : !MmapFixedNoReserve(beg, size, name)) { | |||
| Report( | |||
| "ReserveShadowMemoryRange failed while trying to map 0x%zx bytes. " | |||
| "Perhaps you're using ulimit -v\n", | |||
| "Perhaps you're using ulimit -v or ulimit -d\n", | |||
There was a problem hiding this comment.
should not this relevant only to !madvise_shadow case?
vitalybuka
approved these changes
Jul 12, 2024
aaryanshukla
pushed a commit
to aaryanshukla/llvm-project
that referenced
this pull request
Jul 14, 2024
…#98625) Since Linux 4.7, RLIMIT_DATA may result in mmap() returning ENOMEM. Example: $ clang -fsanitize=address -o hello hello.c $ ulimit -d 100000 $ ./hello ==3349007==ERROR: AddressSanitizer failed to allocate 0x10000000 (268435456) bytes at address 7fff7000 (errno: 12) ==3349007==ReserveShadowMemoryRange failed while trying to map 0x10000000 bytes. Perhaps you're using ulimit -v Suggest checking ulimit -d in addition to ulimit -v.
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Since Linux 4.7, RLIMIT_DATA may result in mmap() returning ENOMEM. Example:
Suggest checking ulimit -d in addition to ulimit -v.