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| author | Jann Horn <[email protected]> | 2019-05-04 13:56:08 +0000 |
|---|---|---|
| committer | Oded Gabbay <[email protected]> | 2019-05-24 19:46:15 +0000 |
| commit | 8438846cce61e284a22316c13aa4b63772963070 (patch) | |
| tree | 48086674deda57429a2e19443a6964463f2f3db2 /tools/perf/scripts/python/syscall-counts.py | |
| parent | uapi/habanalabs: add opcode for enable/disable device debug mode (diff) | |
| download | kernel-8438846cce61e284a22316c13aa4b63772963070.tar.gz kernel-8438846cce61e284a22316c13aa4b63772963070.zip | |
habanalabs: fix debugfs code
This fixes multiple things in the habanalabs debugfs code, in particular:
- mmu_write() was unnecessarily verbose, copying around between multiple
buffers
- mmu_write() could write a user-specified, unbounded amount of userspace
memory into a kernel buffer (out-of-bounds write)
- multiple debugfs read handlers ignored the user-supplied count,
potentially corrupting out-of-bounds userspace data
- hl_device_read() was unnecessarily verbose
- hl_device_write() could read uninitialized stack memory
- multiple debugfs read handlers copied terminating null characters to
userspace
Signed-off-by: Jann Horn <[email protected]>
Reviewed-by: Oded Gabbay <[email protected]>
Signed-off-by: Oded Gabbay <[email protected]>
Cc: [email protected]
Diffstat (limited to 'tools/perf/scripts/python/syscall-counts.py')
0 files changed, 0 insertions, 0 deletions