linux/net/core
Bui Quang Minh 613725436e 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>
2021-12-17 10:14:41 +01:00
..
bpf_sk_storage.c bpf: Change bpf_sk_storage_*() to accept ARG_PTR_TO_BTF_ID_SOCK_COMMON 2020-09-25 13:58:01 -07:00
datagram.c udp: fix skb_copy_and_csum_datagram with odd segment sizes 2021-02-17 11:02:28 +01:00
datagram.h
dev_addr_lists.c net: core: add nested_level variable in net_device 2020-09-28 15:00:15 -07:00
dev_ioctl.c net: fix dev_ifsioc_locked() race condition 2021-03-07 12:34:07 +01:00
dev.c net: annotate data-races on txq->xmit_lock_owner 2021-12-08 09:03:25 +01:00
devlink.c devlink: fix netns refcount leak in devlink_nl_cmd_reload() 2021-12-14 11:32:37 +01:00
drop_monitor.c drop_monitor: Perform cleanup upon probe registration failure 2021-03-30 14:31:57 +02:00
dst_cache.c wireguard: device: reset peer src endpoint when netns exits 2021-12-08 09:03:22 +01:00
dst.c net, bpf: Fix ip6ip6 crash with collect_md populated skbs 2021-03-30 14:32:05 +02:00
failover.c
fib_notifier.c
fib_rules.c ipv6: fix memory leak in fib6_rule_suppress 2021-12-08 09:03:21 +01:00
filter.c bpf: sockmap, strparser, and tls are reusing qdisc_skb_cb and colliding 2021-11-18 14:04:27 +01:00
flow_dissector.c flow_dissector: Fix out-of-bounds warnings 2021-09-18 13:40:22 +02:00
flow_offload.c net: Fix offloading indirect devices dependency on qdisc order creation 2021-09-18 13:40:30 +02:00
gen_estimator.c net_sched: gen_estimator: support large ewma log 2021-01-27 11:55:23 +01:00
gen_stats.c docs: networking: convert gen_stats.txt to ReST 2020-04-28 14:39:46 -07:00
gro_cells.c gro_cells: reduce number of synchronize_net() calls 2020-11-25 11:28:12 -08:00
hwbm.c
link_watch.c net: linkwatch: fix failure to restore device state across suspend/resume 2021-08-18 08:59:13 +02:00
lwt_bpf.c lwt_bpf: Replace preempt_disable() with migrate_disable() 2020-12-07 11:53:40 -08:00
lwtunnel.c
Makefile
neighbour.c net, neigh: clear whole pneigh_entry at alloc time 2021-12-14 11:32:43 +01:00
net_namespace.c net: net_namespace: Fix undefined member in key_remove_domain() 2021-11-18 14:04:02 +01:00
net-procfs.c net-sysfs: add backlog len and CPU id to softnet data 2020-09-21 13:56:37 -07:00
net-sysfs.c net-sysfs: try not to restart the syscall if it will fail eventually 2021-11-18 14:03:56 +01:00
net-sysfs.h
net-traces.c
netclassid_cgroup.c
netevent.c
netpoll.c net: Have netpoll bring-up DSA management interface 2020-11-18 11:04:11 -08:00
netprio_cgroup.c netprio_cgroup: Fix unlimited memory leak of v2 cgroups 2020-05-09 20:59:21 -07:00
page_pool.c mm: fix struct page layout on 32-bit systems 2021-05-19 10:13:17 +02:00
pktgen.c pktgen: fix misuse of BUG_ON() in pktgen_thread_worker() 2021-03-07 12:34:09 +01:00
ptp_classifier.c ptp: Add generic ptp v2 header parsing function 2020-08-19 16:07:49 -07:00
request_sock.c
rtnetlink.c rtnetlink: fix if_nlmsg_stats_size() under estimation 2021-10-13 10:04:28 +02:00
scm.c fs: Add receive_fd() wrapper for __receive_fd() 2020-07-13 11:03:44 -07:00
secure_seq.c crypto: lib/sha1 - remove unnecessary includes of linux/cryptohash.h 2020-05-08 15:32:17 +10:00
skbuff.c net: Fix zero-copy head len calculation. 2021-08-08 09:05:23 +02:00
skmsg.c skmsg: Make sk_psock_destroy() static 2021-08-04 12:46:44 +02:00
sock_diag.c bpf, net: Rework cookie generator as per-cpu one 2020-09-30 11:50:35 -07:00
sock_map.c bpf: Fix integer overflow in argument calculation for bpf_map_area_alloc 2021-12-17 10:14:41 +01:00
sock_reuseport.c udp: Prevent reuseport_select_sock from reading uninitialized socks 2021-01-23 16:03:59 +01:00
sock.c sock: fix /proc/net/sockstat underflow in sk_clone_lock() 2021-11-26 10:39:14 +01:00
stream.c net: stream: don't purge sk_error_queue in sk_stream_kill_queues() 2021-11-18 14:04:08 +01:00
sysctl_net_core.c bpf: Prevent increasing bpf_jit_limit above max 2021-11-18 14:03:42 +01:00
timestamping.c
tso.c net: tso: add UDP segmentation support 2020-06-18 20:46:23 -07:00
utils.c
xdp.c xdp: fix xdp_return_frame() kernel BUG throw for page_pool memory model 2021-04-14 08:42:09 +02:00