diff options
| author | Jakub Kicinski <kuba@kernel.org> | 2023-07-27 15:21:46 -0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2023-07-27 15:22:46 -0700 |
| commit | 014acf26685cfcfae37c9e98b83c622c0b01cf19 (patch) | |
| tree | 85ce0217698aef25875fdc62f2332bbbbc1bff2c /mm/memblock.c | |
| parent | 9d0cd5d25f7d45bce01bbb3193b54ac24b3a60f3 (diff) | |
| parent | 57012c57536f8814dec92e74197ee96c3498d24e (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR.
No conflicts or adjacent changes.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'mm/memblock.c')
| -rw-r--r-- | mm/memblock.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/mm/memblock.c b/mm/memblock.c index f9e61e565a53..c39b36378f5d 100644 --- a/mm/memblock.c +++ b/mm/memblock.c @@ -374,6 +374,10 @@ void __init memblock_discard(void) kfree(memblock.reserved.regions); else memblock_free_late(addr, size); + /* Reset to prevent UAF from stray frees. */ + memblock.reserved.regions = memblock_reserved_init_regions; + memblock.reserved.cnt = 1; + memblock_remove_region(&memblock.reserved, 0); } if (memblock.memory.regions != memblock_memory_init_regions) { |