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14a3d3ef02
linux/net/core
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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
..
bpf_sk_storage.c netlink: introduce type-checking attribute iteration 2024-03-29 15:06:02 -07:00
datagram.c net: add support for skbs with unreadable frags 2024-09-11 20:44:31 -07:00
dev_addr_lists_test.c net: dev_addr_lists: move locking out of init/exit in kunit 2024-04-15 10:26:35 +01:00
dev_addr_lists.c net: Correct spelling in net/core 2024-08-26 09:37:23 -07:00
dev_ioctl.c netdevice: convert private flags > BIT(31) to bitfields 2024-09-03 11:36:43 +02:00
dev.c net: add more sanity checks to qdisc_pkt_len_init() 2024-10-01 11:47:05 +02:00
dev.h net: softnet_data: Make xmit per task. 2024-06-24 16:41:23 -07:00
devmem.c memory-provider: dmabuf devmem memory provider 2024-09-11 20:44:31 -07:00
devmem.h tcp: RX path for devmem TCP 2024-09-11 20:44:32 -07:00
drop_monitor.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
dst_cache.c net: dst_cache: add two DEBUG_NET warnings 2024-06-03 18:50:09 -07:00
dst.c net: do not delay dst_entries_add() in dst_release() 2024-10-10 11:28:17 +02:00
failover.c net: failover: use IFF_NO_ADDRCONF flag to prevent ipv6 addrconf 2022-12-12 15:18:25 -08:00
fib_notifier.c net: fib_notifier: propagate extack down to the notifier block callback 2019-10-04 11:10:56 -07:00
fib_rules.c net: fib_rules: Enable DSCP selector usage 2024-09-13 21:15:45 -07:00
filter.c bpf: Remove MEM_UNINIT from skb/xdp MTU helpers 2024-10-22 15:42:56 -07:00
flow_dissector.c net: flow_dissector: use DEBUG_NET_WARN_ON_ONCE 2024-07-18 10:52:17 +02:00
flow_offload.c tc: flower: Enable offload support IPSEC SPI field. 2023-08-02 10:09:32 +01:00
gen_estimator.c net: use unrcu_pointer() helper 2024-06-06 11:52:52 +02:00
gen_stats.c net: Remove the obsolte u64_stats_fetch_*_irq() users (net). 2022-10-28 20:13:54 -07:00
gro_cells.c net: move netdev_max_backlog to net_hotdata 2024-03-07 21:12:42 -08:00
gro.c net: Add netif_get_gro_max_size helper for GRO 2024-10-01 10:48:51 +02:00
gso.c net: introduce struct net_hotdata 2024-03-07 21:12:41 -08:00
hotdata.c net: move sysctl_mem_pcpu_rsv to net_hotdata 2024-04-30 18:46:52 -07:00
hwbm.c
ieee8021q_helpers.c net: add IEEE 802.1q specific helpers 2024-05-08 10:35:09 +01:00
link_watch.c net: linkwatch: use system_unbound_wq 2024-08-06 12:12:53 -07:00
lwt_bpf.c bpf: lwtunnel: Unmask upper DSCP bits in bpf_lwt_xmit_reroute() 2024-09-09 14:14:52 +01:00
lwtunnel.c xfrm: lwtunnel: squelch kernel warning in case XFRM encap type is not available 2022-10-12 10:45:51 +02:00
Makefile netdev: support binding dma-buf to netdevice 2024-09-11 20:44:31 -07:00
mp_dmabuf_devmem.h memory-provider: dmabuf devmem memory provider 2024-09-11 20:44:31 -07:00
neighbour.c neighbour: delete redundant judgment statements 2024-08-23 14:27:45 +01:00
net_namespace.c struct fd layout change (and conversion to accessor helpers) 2024-09-23 09:35:36 -07:00
net_test.c pfcp: always set pfcp metadata 2024-04-01 10:49:28 +01:00
net-procfs.c net: make softnet_data.dropped an atomic_t 2024-04-01 11:28:32 +01:00
net-sysfs.c net: sysfs: Fix weird usage of class's namespace relevant fields 2024-09-09 10:30:52 +01:00
net-sysfs.h net-sysfs: add netdev_change_owner() 2020-02-26 20:07:25 -08:00
net-traces.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
netclassid_cgroup.c cgroup, netclassid: on modifying netclassid in cgroup, only consider the main process. 2023-10-16 16:36:53 -07:00
netdev_rx_queue.c memory-provider: dmabuf devmem memory provider 2024-09-11 20:44:31 -07:00
netdev-genl-gen.c netdev: support binding dma-buf to netdevice 2024-09-11 20:44:31 -07:00
netdev-genl-gen.h netdev: support binding dma-buf to netdevice 2024-09-11 20:44:31 -07:00
netdev-genl.c netdev: add dmabuf introspection 2024-09-11 20:44:32 -07:00
netevent.c net: core: Correct function name netevent_unregister_notifier() in the kerneldoc 2021-03-28 17:56:56 -07:00
netmem_priv.h page_pool: devmem support 2024-09-11 20:44:31 -07:00
netpoll.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
netprio_cgroup.c bpf, cgroups: Fix cgroup v2 fallback on v1/v2 mixed mode 2021-09-13 16:35:58 -07:00
of_net.c net: Explicitly include correct DT includes 2023-07-27 20:33:16 -07:00
page_pool_priv.h memory-provider: dmabuf devmem memory provider 2024-09-11 20:44:31 -07:00
page_pool_user.c netdev: add dmabuf introspection 2024-09-11 20:44:32 -07:00
page_pool.c memory-provider: dmabuf devmem memory provider 2024-09-11 20:44:31 -07:00
pktgen.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2024-08-29 11:49:10 -07:00
ptp_classifier.c ptp: Add generic PTP is_sync() function 2022-03-07 11:31:34 +00:00
request_sock.c tcp: make sure init the accept_queue's spinlocks once 2024-01-19 21:13:25 -08:00
rtnetlink.c rtnetlink: Add bulk registration helpers for rtnetlink message handlers. 2024-10-10 15:39:35 +02:00
scm.c af_unix: Add dead flag to struct scm_fp_list. 2024-05-10 18:52:45 -07:00
secure_seq.c tcp: Fix data-races around sysctl knobs related to SYN option. 2022-07-20 10:14:49 +01:00
selftests.c net: fill in MODULE_DESCRIPTION()s under net/core 2023-10-28 11:29:27 +01:00
skbuff.c net: add support for skbs with unreadable frags 2024-09-11 20:44:31 -07:00
skmsg.c bpf, sockmap: Correct spelling skmsg.c 2024-09-02 18:43:58 +02:00
sock_destructor.h skb_expand_head() adjust skb->truesize incorrectly 2021-10-22 12:35:51 -07:00
sock_diag.c net: use unrcu_pointer() helper 2024-06-06 11:52:52 +02:00
sock_map.c bpf, sockmap: SK_DROP on attempted redirects of unsupported af_vsock 2024-10-17 13:02:54 +02:00
sock_reuseport.c net: core: annotate socks of struct sock_reuseport with __counted_by 2024-08-02 17:16:59 -07:00
sock.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
stream.c net: Return error from sk_stream_wait_connect() if sk_wait_event() fails 2023-12-15 10:48:51 +00:00
sysctl_net_core.c sysctl: treewide: constify the ctl_table argument of proc_handlers 2024-07-24 20:59:29 +02:00
timestamping.c net: Change the API of PHY default timestamp to MAC 2024-07-15 08:02:26 -07:00
tso.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
utils.c net: Correct spelling in net/core 2024-08-26 09:37:23 -07:00
xdp.c xdp: fix invalid wait context of page_pool_destroy() 2024-07-14 20:40:21 -07:00