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ANDROID: 16K: Fix __MAP_NO_COMPAT overflow

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do_mmap() expects a 32-bit flag. Use the highest bit to avoid
potential future conflicts from upstream.

Bug: 383389337
Bug: 329210993
Bug: 315325080
Bug: 302403436
Test: tools/bazel run //common-modules/virtual-device:virtual_device_i686_dist
Change-Id: I30c1213a2c640e1d4040c208353239ac3c04fbd2
Signed-off-by: Kalesh Singh <kaleshsingh@google.com>
This commit is contained in:
Kalesh Singh
2024-03-12 09:17:57 -07:00
committed by Carlos Llamas
parent 36157a52cd
commit eb54f19663
1 changed files with 1 additions and 1 deletions
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include/linux/page_size_compat.h
+1 -1
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@@ -100,7 +100,7 @@ static __always_inline unsigned __page_shift(void)
* in ___filemap_fixup() * in ___filemap_fixup()
*/ */
#define __VM_NO_COMPAT (_AC(1,ULL) << 63) #define __VM_NO_COMPAT (_AC(1,ULL) << 63)
#define __MAP_NO_COMPAT (_AC(1,ULL) << 63) #define __MAP_NO_COMPAT (_AC(1,UL) << 31)
/* /*
* Conditional page-alignment based on mmap flags * Conditional page-alignment based on mmap flags