https://github.com/torvalds/linux
Revision 08245672cdc6505550d1a5020603b0a8d4a6dcc7 authored by Colin Ian King on 02 December 2022, 13:51:49 UTC, committed by Peter Zijlstra on 27 December 2022, 11:44:00 UTC
The left shift of int 32 bit integer constant 1 is evaluated using 32 bit
arithmetic and then passed as a 64 bit function argument. In the case where
i is 32 or more this can lead to an overflow. Avoid this by shifting
using the BIT_ULL macro instead.
Fixes: 471af006a747 ("perf/x86/amd: Constrain Large Increment per Cycle events")
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Ian Rogers <irogers@google.com>
Acked-by: Kim Phillips <kim.phillips@amd.com>
Link: https://lore.kernel.org/r/20221202135149.1797974-1-colin.i.king@gmail.com
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Tip revision: 08245672cdc6505550d1a5020603b0a8d4a6dcc7 authored by Colin Ian King on 02 December 2022, 13:51:49 UTC
perf/x86/amd: fix potential integer overflow on shift of a int
perf/x86/amd: fix potential integer overflow on shift of a int
Tip revision: 0824567
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| .clang-format | -rw-r--r-- | 20.0 KB |
| .cocciconfig | -rw-r--r-- | 59 bytes |
| .get_maintainer.ignore | -rw-r--r-- | 151 bytes |
| .gitattributes | -rw-r--r-- | 62 bytes |
| .gitignore | -rw-r--r-- | 2.0 KB |
| .mailmap | -rw-r--r-- | 24.6 KB |
| .rustfmt.toml | -rw-r--r-- | 369 bytes |
| COPYING | -rw-r--r-- | 496 bytes |
| CREDITS | -rw-r--r-- | 99.3 KB |
| Kbuild | -rw-r--r-- | 2.5 KB |
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| MAINTAINERS | -rw-r--r-- | 681.0 KB |
| Makefile | -rw-r--r-- | 69.5 KB |
| README | -rw-r--r-- | 727 bytes |
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