https://github.com/torvalds/linux
Revision 9d7eceede769f90b66cfa06ad5b357140d5141ed authored by Daniel Borkmann on 02 January 2019, 23:58:32 UTC, committed by Alexei Starovoitov on 03 January 2019, 00:01:24 UTC
For unknown scalars of mixed signed bounds, meaning their smin_value is negative and their smax_value is positive, we need to reject arithmetic with pointer to map value. For unprivileged the goal is to mask every map pointer arithmetic and this cannot reliably be done when it is unknown at verification time whether the scalar value is negative or positive. Given this is a corner case, the likelihood of breaking should be very small. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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History 
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Tip revision: 9d7eceede769f90b66cfa06ad5b357140d5141ed authored by Daniel Borkmann on 02 January 2019, 23:58:32 UTC
bpf: restrict unknown scalars of mixed signed bounds for unprivileged
bpf: restrict unknown scalars of mixed signed bounds for unprivileged
Tip revision: 9d7ecee
| File | Mode | Size |
|---|---|---|
| Documentation | ||
| LICENSES | ||
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| drivers | ||
| firmware | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | -rw-r--r-- | 12.7 KB |
| .cocciconfig | -rw-r--r-- | 59 bytes |
| .get_maintainer.ignore | -rw-r--r-- | 31 bytes |
| .gitattributes | -rw-r--r-- | 30 bytes |
| .gitignore | -rw-r--r-- | 1.5 KB |
| .mailmap | -rw-r--r-- | 10.6 KB |
| COPYING | -rw-r--r-- | 423 bytes |
| CREDITS | -rw-r--r-- | 96.7 KB |
| Kbuild | -rw-r--r-- | 2.2 KB |
| Kconfig | -rw-r--r-- | 563 bytes |
| MAINTAINERS | -rw-r--r-- | 477.2 KB |
| Makefile | -rw-r--r-- | 59.6 KB |
| README | -rw-r--r-- | 727 bytes |
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