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14a3d3ef02
linux/net
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Daniel Borkmann 14a3d3ef02 bpf: Remove MEM_UNINIT from skb/xdp MTU helpers 
We can now undo parts of 4b3786a6c5 ("bpf: Zero former ARG_PTR_TO_{LONG,INT}
args in case of error") as discussed in [0].

Given the BPF helpers now have MEM_WRITE tag, the MEM_UNINIT can be cleared.

The mtu_len is an input as well as output argument, meaning, the BPF program
has to set it to something. It cannot be uninitialized. Therefore, allowing
uninitialized memory and zeroing it on error would be odd. It was done as
an interim step in 4b3786a6c5 as the desired behavior could not have been
expressed before the introduction of MEM_WRITE tag.

Fixes: 4b3786a6c5 ("bpf: Zero former ARG_PTR_TO_{LONG,INT} args in case of error")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/a86eb76d-f52f-dee4-e5d2-87e45de3e16f@iogearbox.net [0]
Acked-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20241021152809.33343-3-daniel@iogearbox.net
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2024-10-22 15:42:56 -07:00
..
6lowpan ipv6: eliminate ndisc_ops_is_useropt() 2024-08-12 17:23:57 -07:00
9p Mashed-up update that I sat on too long: 2024-10-19 08:44:10 -07:00
802 move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
8021q netdev_features: remove NETIF_F_ALL_FCOE 2024-09-03 11:36:43 +02:00
appletalk
atm atm: clean up a put_user() calls 2024-06-14 19:08:50 -07:00
ax25 ax25: Replace kfree() in ax25_dev_free() with ax25_dev_put() 2024-06-01 15:49:42 -07:00
batman-adv move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
bluetooth Bluetooth: bnep: fix wild-memory-access in proto_unregister 2024-10-16 16:10:03 -04:00
bpf bpf: use type_may_be_null() helper for nullable-param check 2024-09-05 13:29:06 -07:00
bridge bridge: Handle error of rtnl_register_module(). 2024-10-10 15:39:35 +02:00
caif move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
can Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2024-09-15 09:13:19 -07:00
ceph libceph: use min() to simplify code in ceph_dns_resolve_name() 2024-08-27 09:30:16 +02:00
core bpf: Remove MEM_UNINIT from skb/xdp MTU helpers 2024-10-22 15:42:56 -07:00
dcb
dccp move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
devlink devlink: Constify the 'table_ops' parameter of devl_dpipe_table_register() 2024-06-05 10:24:57 +01:00
dns_resolver
dsa net: dsa: refuse cross-chip mirroring operations 2024-10-09 19:41:35 -07:00
ethernet netkit: Fix pkt_type override upon netkit pass verdict 2024-05-25 10:48:57 -07:00
ethtool net: ethtool: phy: Don't set the context dev pointer for unfiltered DUMP 2024-09-13 21:40:12 -07:00
handshake net/handshake: use sockfd_put() helper 2024-08-27 16:09:25 -07:00
hsr Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2024-09-12 17:11:24 -07:00
ieee802154 netdev_features: convert NETIF_F_NETNS_LOCAL to dev->netns_local 2024-09-03 11:36:43 +02:00
ife
ipv4 udp: Compute L4 checksum as usual when not segmenting the skb 2024-10-15 18:12:33 -07:00
ipv6 udp: Compute L4 checksum as usual when not segmenting the skb 2024-10-15 18:12:33 -07:00
iucv s390/iucv: Fix vargs handling in iucv_alloc_device() 2024-08-22 13:09:20 -07:00
kcm kcm: Serialise kcm_sendmsg() for the same socket. 2024-08-19 18:36:12 -07:00
key
l2tp genetlink: hold RCU in genlmsg_mcast() 2024-10-15 17:52:58 -07:00
l3mdev
lapb
llc llc: Constify struct llc_sap_state_trans 2024-07-15 08:51:19 -07:00
mac80211 move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
mac802154 Including fixes from ieee802154, bluetooth and netfilter. 2024-10-03 09:44:00 -07:00
mctp mctp: Handle error of rtnl_register_module(). 2024-10-10 15:39:35 +02:00
mpls mpls: Handle error of rtnl_register_module(). 2024-10-10 15:39:35 +02:00
mptcp mptcp: pm: fix UaF read in mptcp_pm_nl_rm_addr_or_subflow 2024-10-17 12:06:55 +02:00
ncsi net/ncsi: Disable the ncsi work before freeing the associated structure 2024-10-03 10:14:14 +02:00
netfilter BPF fixes: 2024-10-18 16:27:14 -07:00
netlabel netlabel: fix RCU annotation for IPv4 options on socket creation 2024-05-13 14:58:12 -07:00
netlink genetlink: hold RCU in genlmsg_mcast() 2024-10-15 17:52:58 -07:00
netrom net/netrom: prefer strscpy over strcpy 2024-08-29 12:33:07 -07:00
nfc Quite smaller than usual. Notably it includes the fix for the unix 2024-05-23 12:49:37 -07:00
nsh
openvswitch netdev_features: convert NETIF_F_NETNS_LOCAL to dev->netns_local 2024-09-03 11:36:43 +02:00
packet net: add support for skbs with unreadable frags 2024-09-11 20:44:31 -07:00
phonet phonet: Handle error of rtnl_register_module(). 2024-10-10 15:39:36 +02:00
psample net: psample: fix flag being set in wrong skb 2024-07-11 18:11:31 -07:00
qrtr net: qrtr: Update packets cloning when broadcasting 2024-09-24 10:48:16 +02:00
rds net: rds: add option for GCOV profiling 2024-08-09 13:18:46 +01:00
rfkill [tree-wide] finally take no_llseek out 2024-09-27 08:18:43 -07:00
rose net: change proto and proto_ops accept type 2024-05-13 18:19:09 -06:00
rxrpc rxrpc: Fix uninitialised variable in rxrpc_send_data() 2024-10-03 16:23:21 -07:00
sched net/sched: accept TCA_STAB only for root qdisc 2024-10-08 15:38:56 -07:00
sctp sctp: ensure sk_state is set to CLOSED if hashing fails in sctp_listen_start 2024-10-09 13:36:32 +01:00
smc net/smc: Fix searching in list of known pnetids in smc_pnet_add_pnetid 2024-10-15 10:56:31 -07:00
strparser
sunrpc NFS Client Bugfixes for Linux 6.12-rc 2024-10-11 15:37:15 -07:00
switchdev
tipc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2024-09-15 09:13:19 -07:00
tls move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
unix af_unix: Don't return OOB skb in manage_oob(). 2024-09-09 17:14:27 -07:00
vmw_vsock BPF fixes: 2024-10-18 16:27:14 -07:00
wireless genetlink: hold RCU in genlmsg_mcast() 2024-10-15 17:52:58 -07:00
x25 net: change proto and proto_ops accept type 2024-05-13 18:19:09 -06:00
xdp bpf-next-6.12 2024-09-21 09:27:50 -07:00
xfrm move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
compat.c
devres.c
Kconfig memory-provider: disable building dmabuf mp on !CONFIG_PAGE_POOL 2024-09-13 11:41:45 -07:00
Kconfig.debug
Makefile
socket.c net: explicitly clear the sk pointer, when pf->create fails 2024-10-07 16:21:59 -07:00
sysctl_net.c sysctl: Remove check for sentinel element in ctl_table arrays 2024-06-13 10:50:52 +02:00