Bui Quang Minh 445019bbca UPSTREAM: bpf: Fix integer overflow in argument calculation for bpf_map_area_alloc ... commit 7dd5d437c2 upstream. In 32-bit architecture, the result of sizeof() is a 32-bit integer so the expression becomes the multiplication between 2 32-bit integer which can potentially leads to integer overflow. As a result, bpf_map_area_alloc() allocates less memory than needed. Fix this by casting 1 operand to u64. Fixes: 0d2c4f9640 ("bpf: Eliminate rlimit-based memory accounting for sockmap and sockhash maps") Fixes: 99c51064fb ("devmap: Use bpf_map_area_alloc() for allocating hash buckets") Fixes: 546ac1ffb7 ("bpf: add devmap, a map for storing net device references") Signed-off-by: Bui Quang Minh <minhquangbui99@gmail.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20210613143440.71975-1-minhquangbui99@gmail.com Signed-off-by: Connor O'Brien <connoro@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Lee Jones <lee.jones@linaro.org> Change-Id: I9ce1991224a87eb39acf1da4923534e22380fc42		2022-01-26 09:16:43 +00:00
..
preload	bpf: Fix umd memory leak in copy_process()	2021-03-30 14:32:03 +02:00
arraymap.c	bpf: Fix potential race in tail call compatibility check	2021-11-02 19:48:21 +01:00
bpf_inode_storage.c	bpf: Change inode_storage's lookup_elem return value from NULL to -EBADF	2021-03-30 14:31:56 +02:00
bpf_iter.c
bpf_local_storage.c
bpf_lru_list.c
bpf_lru_list.h
bpf_lsm.c
bpf_struct_ops_types.h
bpf_struct_ops.c	This is the 5.10.71 stable release	2021-10-06 17:33:06 +02:00
btf.c	bpf: Forbid trampoline attach for functions with variable arguments	2021-06-16 12:01:35 +02:00
cgroup.c
core.c	This is the 5.10.80 stable release	2021-11-19 11:50:41 +01:00
cpumap.c
devmap.c	UPSTREAM: bpf: Fix integer overflow in argument calculation for bpf_map_area_alloc	2022-01-26 09:16:43 +00:00
disasm.c	bpf: Introduce BPF nospec instruction for mitigating Spectre v4	2021-08-04 12:46:44 +02:00
disasm.h
dispatcher.c
hashtab.c	bpf: Fix integer overflow involving bucket_size	2021-08-18 08:59:10 +02:00
helpers.c	bpf: Fix potentially incorrect results with bpf_get_local_storage()	2021-09-03 10:09:31 +02:00
inode.c	bpf: link: Refuse non-O_RDWR flags in BPF_OBJ_GET	2021-04-14 08:42:00 +02:00
local_storage.c	bpf: Fix NULL pointer dereference in bpf_get_local_storage() helper	2021-09-03 10:09:21 +02:00
lpm_trie.c
Makefile
map_in_map.c
map_in_map.h
map_iter.c
net_namespace.c
offload.c
percpu_freelist.c
percpu_freelist.h
prog_iter.c
queue_stack_maps.c
reuseport_array.c
ringbuf.c	bpf: Fix false positive kmemleak report in bpf_ringbuf_area_alloc()	2021-07-19 09:44:54 +02:00
stackmap.c	bpf: Fix integer overflow in prealloc_elems_and_freelist()	2021-10-13 10:04:26 +02:00
syscall.c	This is the 5.10.77 stable release	2021-11-02 20:03:12 +01:00
sysfs_btf.c
task_iter.c
tnum.c
trampoline.c	Revert "Revert "bpf: Fix fexit trampoline.""	2021-04-09 21:09:04 -07:00
verifier.c	This is the 5.10.80 stable release	2021-11-19 11:50:41 +01:00