linux/net/core
Bui Quang Minh 7dd5d437c2 bpf: Fix integer overflow in argument calculation for bpf_map_area_alloc
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
2021-06-22 10:14:29 -07:00
..
bpf_sk_storage.c bpf: Prevent deadlock from recursive bpf_task_storage_[get|delete] 2021-02-26 11:51:48 -08:00
datagram.c udp: fix skb_copy_and_csum_datagram with odd segment sizes 2021-02-04 18:56:56 -08:00
datagram.h
dev_addr_lists.c net: core: Correct function name dev_uc_flush() in the kerneldoc 2021-03-28 17:56:56 -07:00
dev_ioctl.c net: fix dev_ifsioc_locked() race condition 2021-02-11 18:14:19 -08:00
dev.c net: sched: fix tx action reschedule issue with stopped queue 2021-05-14 15:05:46 -07:00
devlink.c devlink: Correct VIRTUAL port to not have phys_port attributes 2021-05-27 14:43:41 -07:00
drop_monitor.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-03-25 15:31:22 -07:00
dst_cache.c
dst.c net, bpf: Fix ip6ip6 crash with collect_md populated skbs 2021-03-10 12:24:18 -08:00
failover.c
fib_notifier.c
fib_rules.c fib: Return the correct errno code 2021-06-03 15:13:56 -07:00
filter.c bpf: Set mac_len in bpf_skb_change_head 2021-05-21 00:03:51 +02:00
flow_dissector.c flow_dissector: Fix out-of-bounds warning in __skb_flow_bpf_to_target() 2021-04-16 17:02:27 -07:00
flow_offload.c net: flow_offload: Fix memory leak for indirect flow block 2020-12-09 16:08:33 -08:00
gen_estimator.c net_sched: gen_estimator: support large ewma log 2021-01-15 18:11:06 -08:00
gen_stats.c
gro_cells.c gro_cells: reduce number of synchronize_net() calls 2020-11-25 11:28:12 -08:00
hwbm.c
link_watch.c
lwt_bpf.c lwt_bpf: Replace preempt_disable() with migrate_disable() 2020-12-07 11:53:40 -08:00
lwtunnel.c
Makefile net: selftest: fix build issue if INET is disabled 2021-04-28 14:06:45 -07:00
neighbour.c neighbour: allow NUD_NOARP entries to be forced GCed 2021-06-07 15:25:47 -07:00
net_namespace.c net: inline function get_net_ns_by_fd if NET_NS is disabled 2021-06-15 11:00:45 -07:00
net-procfs.c net: move the ptype_all and ptype_base declarations to include/linux/netdevice.h 2021-03-22 13:14:45 -07:00
net-sysfs.c net-sysfs: remove possible sleep from an RCU read-side critical section 2021-03-22 13:28:13 -07:00
net-sysfs.h
net-traces.c
netclassid_cgroup.c net: Remove the err argument from sock_from_file 2020-12-04 22:32:40 +01:00
netevent.c net: core: Correct function name netevent_unregister_notifier() in the kerneldoc 2021-03-28 17:56:56 -07:00
netpoll.c Revert "net: Have netpoll bring-up DSA management interface" 2021-02-06 14:42:57 -08:00
netprio_cgroup.c net: Remove the err argument from sock_from_file 2020-12-04 22:32:40 +01:00
page_pool.c mm: fix struct page layout on 32-bit systems 2021-05-14 19:41:32 -07:00
pktgen.c pktgen: fix misuse of BUG_ON() in pktgen_thread_worker() 2021-01-27 16:46:37 -08:00
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 regression in bridge VLAN configuration 2021-06-09 14:58:26 -07:00
scm.c scm: fix a typo in put_cmsg() 2021-04-16 11:41:07 -07:00
secure_seq.c
selftests.c net: add generic selftest support 2021-04-20 16:08:02 -07:00
skbuff.c skbuff: fix incorrect msg_zerocopy copy notifications 2021-06-10 13:39:57 -07:00
skmsg.c skmsg: Increase sk->sk_drops when dropping packets 2021-06-21 16:48:44 +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 2021-06-22 10:14:29 -07:00
sock_reuseport.c udp: Prevent reuseport_select_sock from reading uninitialized socks 2021-01-08 19:15:40 -08:00
sock.c net: sock: fix in-kernel mark setting 2021-06-01 15:18:49 -07:00
stream.c
sysctl_net_core.c net: change netdev_unregister_timeout_secs min value to 1 2021-03-25 17:24:06 -07:00
timestamping.c
tso.c
utils.c
xdp.c xdp: fix xdp_return_frame() kernel BUG throw for page_pool memory model 2021-03-31 15:15:23 -07:00