mirror of
https://git.proxmox.com/git/mirror_ubuntu-kernels.git
synced 2025-12-11 12:41:52 +00:00
Maps of per-cpu type have their value element size adjusted to 8 if it
is specified smaller during various map operations.
This makes test_maps as a 32-bit binary fail, in fact the kernel
writes past the end of the value's array on the user's stack.
To be quite honest, I think the kernel should reject creation of a
per-cpu map that doesn't have a value size of at least 8 if that's
what the kernel is going to silently adjust to later.
If the user passed something smaller, it is a sizeof() calcualtion
based upon the type they will actually use (just like in this testcase
code) in later calls to the map operations.
Fixes:
|
||
|---|---|---|
| .. | ||
| fault-injection | ||
| ktest | ||
| nvdimm | ||
| radix-tree | ||
| selftests | ||