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| author | Denis Sergeev <zeff@altlinux.org> | 2025-09-15 11:01:18 +0300 |
|---|---|---|
| committer | Harsh Prateek Bora <harshpb@linux.ibm.com> | 2025-09-28 23:50:36 +0530 |
| commit | 6c51df580d2a64b4e1ef7bdbffeb3615ffe25d43 (patch) | |
| tree | 44011d0a8871f89d99beab6a50d76fc10fff9395 /scripts/lib/kdoc/kdoc_parser.py | |
| parent | 264a604e71636bd04bfbbe3cf887259f246dccb3 (diff) | |
| download | qemu-6c51df580d2a64b4e1ef7bdbffeb3615ffe25d43.zip qemu-6c51df580d2a64b4e1ef7bdbffeb3615ffe25d43.tar.gz qemu-6c51df580d2a64b4e1ef7bdbffeb3615ffe25d43.tar.bz2 | |
target/ppc: use MAKE_64BIT_MASK for mcrfs exception clear mask
In gen_mcrfs() the FPSCR nibble mask is computed as:
`~((0xF << shift) & FP_EX_CLEAR_BITS)`
Here, 0xF is of type int, so the left shift is performed in
32-bit signed arithmetic. For bfa=0 we get shift=28,
and (0xF << 28) = 0xF0000000, which is not representable as a 32-bit
signed int. Static analyzers flag this as a potential integer
overflow.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Signed-off-by: Denis Sergeev <zeff@altlinux.org>
Reviewed-by: Chinmay Rath <rathc@linux.ibm.com>
Signed-off-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Link: https://lore.kernel.org/r/20250915080118.29898-1-zeff@altlinux.org
Message-ID: <20250915080118.29898-1-zeff@altlinux.org>
Diffstat (limited to 'scripts/lib/kdoc/kdoc_parser.py')
0 files changed, 0 insertions, 0 deletions