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	bpf: Clean up indentation issue in BTF kflag processing	2019-09-26 17:09:18 +02:00
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	xdp: Handle device unregister for devmap_hash map type	2019-10-21 15:51:41 -07:00
disasm.c
disasm.h
hashtab.c
helpers.c
inode.c	vfs: Convert bpf to use the new mount API	2019-09-18 22:35:31 -04:00
local_storage.c
lpm_trie.c
Makefile	btf: expose BTF info through sysfs	2019-08-13 16:14:15 +02:00
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	btf: fix return value check in btf_vmlinux_init()	2019-08-15 22:18:17 -07:00
tnum.c
verifier.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next	2019-09-16 16:02:03 +02:00
xskmap.c	bpf/xskmap: Return ERR_PTR for failure case instead of NULL.	2019-09-25 22:14:16 +02:00