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| author |   Jan Kiszka <jan.kiszka@siemens.com> | 2025-08-25 18:07:10 +0200 |
|---|---|---|
| committer |   Ard Biesheuvel <ardb@kernel.org> | 2025-08-26 14:47:53 +0200 |
| commit | c5e81e672699e0c5557b2b755cc8f7a69aa92bff (patch) | |
| tree | c380524326d1a59c5e82286155473a958c1b9266 /tools/perf/scripts/python | |
| parent | Linux 6.17-rc1 (diff) | |
| download | wireguard-linux-c5e81e672699e0c5557b2b755cc8f7a69aa92bff.tar.xz wireguard-linux-c5e81e672699e0c5557b2b755cc8f7a69aa92bff.zip | |
efi: stmm: Fix incorrect buffer allocation method
The communication buffer allocated by setup_mm_hdr() is later on passed
to tee_shm_register_kernel_buf(). The latter expects those buffers to be
contiguous pages, but setup_mm_hdr() just uses kmalloc(). That can cause
various corruptions or BUGs, specifically since commit 9aec2fb0fd5e
("slab: allocate frozen pages"), though it was broken before as well.
Fix this by using alloc_pages_exact() instead of kmalloc().
Fixes: c44b6be62e8d ("efi: Add tee-based EFI variable driver")
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Acked-by: Sumit Garg <sumit.garg@oss.qualcomm.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions