[compiler-rt] 848bc1c - Fix GetRandom in sanitizer_fuchsia.cpp (#110155)

[via llvm-commits]

Author: Marco Vanotti
Date: 2024-10-22T22:44:35-07:00
New Revision: 848bc1c38334db3793d5b3ffbb87b1fd66de34dd

URL: https://github.com/llvm/llvm-project/commit/848bc1c38334db3793d5b3ffbb87b1fd66de34dd
DIFF: https://github.com/llvm/llvm-project/commit/848bc1c38334db3793d5b3ffbb87b1fd66de34dd.diff

LOG: Fix GetRandom in sanitizer_fuchsia.cpp (#110155)

The `zx_cprng_draw` system call has no limit on how much you can draw.

Co-authored-by: Marco Vanotti <mvanotti at users.noreply.github.com>

Added: 
    

Modified: 
    compiler-rt/lib/sanitizer_common/sanitizer_fuchsia.cpp

Removed: 
    


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diff  --git a/compiler-rt/lib/sanitizer_common/sanitizer_fuchsia.cpp b/compiler-rt/lib/sanitizer_common/sanitizer_fuchsia.cpp
index c2ace46c946587..acbf3ebfc95c0e 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_fuchsia.cpp
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_fuchsia.cpp
@@ -523,7 +523,6 @@ uptr ReadLongProcessName(/*out*/ char *buf, uptr buf_len) {
 uptr MainThreadStackBase, MainThreadStackSize;
 
 bool GetRandom(void *buffer, uptr length, bool blocking) {
-  CHECK_LE(length, ZX_CPRNG_DRAW_MAX_LEN);
   _zx_cprng_draw(buffer, length);
   return true;
 }