diff options
| author | Anton Gusev <aagusev@ispras.ru> | 2023-02-03 16:22:13 +0300 |
|---|---|---|
| committer | Ard Biesheuvel <ardb@kernel.org> | 2023-02-03 14:52:10 +0100 |
| commit | 966d47e1f27c45507c5df82b2a2157e5a4fd3909 (patch) | |
| tree | b43fa4ec2c1693a7a2ea380503df9aebe8c23bc7 /lib/Kconfig.kmsan | |
| parent | 636ab417a7aec4ee993916e688eb5c5977570836 (diff) | |
efi: fix potential NULL deref in efi_mem_reserve_persistent
When iterating on a linked list, a result of memremap is dereferenced
without checking it for NULL.
This patch adds a check that falls back on allocating a new page in
case memremap doesn't succeed.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Fixes: 18df7577adae ("efi/memreserve: deal with memreserve entries in unmapped memory")
Signed-off-by: Anton Gusev <aagusev@ispras.ru>
[ardb: return -ENOMEM instead of breaking out of the loop]
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Diffstat (limited to 'lib/Kconfig.kmsan')
0 files changed, 0 insertions, 0 deletions