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linux/net/core
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Mina Almasry ac462a75fd net: netmem: fix skb_ensure_writable with unreadable skbs 
[ Upstream commit 6f793a1d05 ]

skb_ensure_writable should succeed when it's trying to write to the
header of the unreadable skbs, so it doesn't need an unconditional
skb_frags_readable check. The preceding pskb_may_pull() call will
succeed if write_len is within the head and fail if we're trying to
write to the unreadable payload, so we don't need an additional check.

Removing this check restores DSCP functionality with unreadable skbs as
it's called from dscp_tg.

Cc: willemb@google.com
Cc: asml.silence@gmail.com
Fixes: 65249feb6b ("net: add support for skbs with unreadable frags")
Signed-off-by: Mina Almasry <almasrymina@google.com>
Acked-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20250615200733.520113-1-almasrymina@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2025-06-27 11:11:43 +01:00
..
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.c net: flush_backlog() small changes 2025-05-29 11:03:01 +02:00
dev.h net: page_pool: avoid false positive warning if NAPI was never added 2025-05-29 11:02:59 +02:00
dev_addr_lists.c net: Correct spelling in net/core 2024-08-26 09:37:23 -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_ioctl.c netdevice: convert private flags > BIT(31) to bitfields 2024-09-03 11:36:43 +02:00
devmem.c net: devmem: do not WARN conditionally after netdev_rx_queue_restart() 2025-04-10 14:39:31 +02:00
devmem.h tcp: RX path for devmem TCP 2024-09-11 20:44:32 -07:00
drop_monitor.c drop_monitor: fix incorrect initialization order 2025-02-27 04:30:21 -08:00
dst.c net: decrease cached dst counters in dst_release 2025-04-10 14:39:34 +02:00
dst_cache.c net: dst_cache: add two DEBUG_NET warnings 2024-06-03 18:50:09 -07:00
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: annotate data-races around rule->[io]ifindex 2025-02-21 14:01:16 +01:00
filter.c bpf: Fix L4 csum update on IPv6 in CHECKSUM_COMPLETE 2025-06-27 11:11:40 +01:00
flow_dissector.c flow_dissector: Fix port range key handling in BPF conversion 2025-02-27 04:30:18 -08:00
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.c net: Clear old fragment checksum value in napi_reuse_skb 2025-03-07 18:25:33 +01:00
gro_cells.c net: move netdev_max_backlog to net_hotdata 2024-03-07 21:12:42 -08:00
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 net: hwbm: Make the hwbm_pool lock a mutex 2019-06-09 19:40:10 -07:00
ieee8021q_helpers.c net: add IEEE 802.1q specific helpers 2024-05-08 10:35:09 +01:00
link_watch.c ipvlan: Fix use-after-free in ipvlan_get_iflink(). 2025-01-17 13:40:39 +01:00
lwt_bpf.c bpf: lwtunnel: Unmask upper DSCP bits in bpf_lwt_xmit_reroute() 2024-09-09 14:14:52 +01:00
lwtunnel.c net: lwtunnel: disable BHs when required 2025-05-02 07:59:01 +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 net/neighbor: add missing policy for NDTPA_QUEUE_LENBYTES 2025-03-28 22:03:28 +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
net_namespace.c net: defer final 'struct net' free in netns dismantle 2024-12-19 18:13:13 +01:00
net_test.c pfcp: always set pfcp metadata 2024-04-01 10:49:28 +01:00
netclassid_cgroup.c cgroup, netclassid: on modifying netclassid in cgroup, only consider the main process. 2023-10-16 16:36:53 -07:00
netdev-genl-gen.c netdev: avoid CFI problems with sock priv helpers 2025-01-23 17:22:52 +01:00
netdev-genl-gen.h netdev: support binding dma-buf to netdevice 2024-09-11 20:44:31 -07:00
netdev-genl.c net: export a helper for adding up queue stats 2025-05-18 08:24:50 +02:00
netdev_rx_queue.c memory-provider: dmabuf devmem memory provider 2024-09-11 20:44:31 -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: Track DMA-mapped pages and unmap them when destroying the pool 2025-06-19 15:31:42 +02:00
netpoll.c netpoll: hold rcu read lock in __netpoll_send_skb() 2025-03-22 12:54:11 -07:00
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.c net: page_pool: Don't recycle into cache on PREEMPT_RT 2025-06-27 11:11:30 +01:00
page_pool_priv.h memory-provider: dmabuf devmem memory provider 2024-09-11 20:44:31 -07:00
page_pool_user.c net: page_pool: don't cast mp param to devmem 2025-04-20 10:15:17 +02:00
pktgen.c net: pktgen: fix access outside of user given buffer in pktgen_thread_write() 2025-05-29 11:02:43 +02:00
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: Allocate vfinfo size for VF GUIDs when supported 2025-04-10 14:39:26 +02:00
scm.c tcp: devmem: don't write truncated dmabuf CMSGs to userspace 2025-03-07 18:25:32 +01:00
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: selftests: initialize TCP header and skb payload with zero 2025-05-02 07:59:06 +02:00
skbuff.c net: netmem: fix skb_ensure_writable with unreadable skbs 2025-06-27 11:11:43 +01:00
skmsg.c bpf, sockmap: Fix data lost during EAGAIN retries 2025-06-27 11:11:35 +01:00
sock.c sock: Correct error checking condition for (assign|release)_proto_idx() 2025-06-27 11:11:34 +01:00
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: Disable non stream socket for strparser 2025-02-27 04:30:19 -08:00
sock_reuseport.c net: core: annotate socks of struct sock_reuseport with __counted_by 2024-08-02 17:16:59 -07:00
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 net: set the minimum for net_hotdata.netdev_budget_usecs 2025-03-07 18:25:29 +01:00
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: Fix checksum update for ILA adj-transport 2025-06-27 11:11:40 +01:00
xdp.c page_pool: Move pp_magic check into helper functions 2025-06-19 15:31:42 +02:00