Björn Töpel ff1c08e1f7 bpf: Change size to u64 for bpf_map_{area_alloc, charge_init}() ... The functions bpf_map_area_alloc() and bpf_map_charge_init() prior this commit passed the size parameter as size_t. In this commit this is changed to u64. All users of these functions avoid size_t overflows on 32-bit systems, by explicitly using u64 when calculating the allocation size and memory charge cost. However, since the result was narrowed by the size_t when passing size and cost to the functions, the overflow handling was in vain. Instead of changing all call sites to size_t and handle overflow at the call site, the parameter is changed to u64 and checked in the functions above. Fixes: d407bd25a2 ("bpf: don't trigger OOM killer under pressure with map alloc") Fixes: c85d69135a ("bpf: move memory size checks to bpf_map_charge_init()") Signed-off-by: Björn Töpel <bjorn.topel@intel.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com> Link: https://lore.kernel.org/bpf/20191029154307.23053-1-bjorn.topel@gmail.com		2019-10-31 21:41:33 +01:00
..
arraymap.c
bpf_lru_list.c
bpf_lru_list.h
btf.c
cgroup.c	bpf: Allow narrow loads of bpf_sysctl fields with offset > 0	2019-10-30 12:49:13 -07:00
core.c	bpf: Fix use after free in subprog's jited symbol removal	2019-10-22 11:26:09 -07:00
cpumap.c
devmap.c
disasm.c
disasm.h
hashtab.c
helpers.c
inode.c
local_storage.c
lpm_trie.c
Makefile
map_in_map.c
map_in_map.h
offload.c
percpu_freelist.c
percpu_freelist.h
queue_stack_maps.c
reuseport_array.c
stackmap.c
syscall.c	bpf: Change size to u64 for bpf_map_{area_alloc, charge_init}()	2019-10-31 21:41:33 +01:00
sysfs_btf.c
tnum.c
verifier.c
xskmap.c