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f0bfe06c55
android_kernel_samsung_sm8650/net
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Michal Sojka f0bfe06c55 can: isotp: isotp_ops: fix poll() to not report false EPOLLOUT events 
commit 79e19fa79cb5d5f1b3bf3e3ae24989ccb93c7b7b upstream.

When using select()/poll()/epoll() with a non-blocking ISOTP socket to
wait for when non-blocking write is possible, a false EPOLLOUT event
is sometimes returned. This can happen at least after sending a
message which must be split to multiple CAN frames.

The reason is that isotp_sendmsg() returns -EAGAIN when tx.state is
not equal to ISOTP_IDLE and this behavior is not reflected in
datagram_poll(), which is used in isotp_ops.

This is fixed by introducing ISOTP-specific poll function, which
suppresses the EPOLLOUT events in that case.

v2: https://lore.kernel.org/all/20230302092812.320643-1-michal.sojka@cvut.cz
v1: https://lore.kernel.org/all/20230224010659.48420-1-michal.sojka@cvut.cz
    https://lore.kernel.org/all/b53a04a2-ba1f-3858-84c1-d3eb3301ae15@hartkopp.net

Signed-off-by: Michal Sojka <michal.sojka@cvut.cz>
Reported-by: Jakub Jira <jirajak2@fel.cvut.cz>
Tested-by: Oliver Hartkopp <socketcan@hartkopp.net>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Fixes: e057dd3fc2 ("can: add ISO 15765-2:2016 transport protocol")
Link: https://lore.kernel.org/all/20230331125511.372783-1-michal.sojka@cvut.cz
Cc: stable@vger.kernel.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-04-13 16:55:33 +02:00
..
6lowpan net: 6lowpan: constify lowpan_nhc structures 2022-06-09 21:53:28 +02:00
9p net/9p: fix bug in client create for .L 2023-03-22 13:33:54 +01:00
802 mrp: introduce active flags to prevent UAF when applicant uninit 2022-12-31 13:33:02 +01:00
8021q net: gro: skb_gro_header helper function 2022-08-25 10:33:21 +02:00
appletalk net: remove noblock parameter from skb_recv_datagram() 2022-04-06 13:45:26 +01:00
atm net/atm: fix proc_mpc_write incorrect return value 2022-10-15 11:08:36 +01:00
ax25 ax25: move from strlcpy with unused retval to strscpy 2022-08-22 17:55:50 -07:00
batman-adv Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-09-22 13:02:10 -07:00
bluetooth Bluetooth: Fix race condition in hci_cmd_sync_clear 2023-03-30 12:49:22 +02:00
bpf Revert "bpf, test_run: fix &xdp_frame misplacement for LIVE_FRAMES" 2023-03-17 08:50:32 +01:00
bpfilter
bridge netfilter: ebtables: fix table blob use-after-free 2023-03-11 13:55:24 +01:00
caif net: caif: Fix use-after-free in cfusbl_device_notify() 2023-03-17 08:50:24 +01:00
can can: isotp: isotp_ops: fix poll() to not report false EPOLLOUT events 2023-04-13 16:55:33 +02:00
ceph use less confusing names for iov_iter direction initializers 2023-02-09 11:28:04 +01:00
core net: don't let netpoll invoke NAPI if in xmit context 2023-04-13 16:55:21 +02:00
dcb
dccp dccp/tcp: Avoid negative sk_forward_alloc by ipv6_pinfo.pktoptions. 2023-02-22 12:59:52 +01:00
dns_resolver
dsa net: dsa: tag_brcm: legacy: fix daisy-chained switches 2023-03-30 12:49:09 +02:00
ethernet net: gro: skb_gro_header helper function 2022-08-25 10:33:21 +02:00
ethtool ethtool: reset #lanes when lanes is omitted 2023-04-13 16:55:24 +02:00
hsr hsr: ratelimit only when errors are printed 2023-04-06 12:10:58 +02:00
ieee802154 net: ieee802154: fix error return code in dgram_bind() 2022-10-07 09:29:17 +02:00
ife
ipv4 ping: Fix potentail NULL deref for /proc/net/icmp. 2023-04-13 16:55:24 +02:00
ipv6 raw: Fix NULL deref in raw_get_next(). 2023-04-13 16:55:23 +02:00
iucv net/iucv: Fix size of interrupt data 2023-03-22 13:33:50 +01:00
kcm kcm: close race conditions on sk_receive_queue 2022-11-15 12:42:26 +01:00
key xfrm: Fix oops in __xfrm_state_delete() 2022-11-22 07:14:55 +01:00
l2tp l2tp: generate correct module alias strings 2023-04-13 16:55:20 +02:00
l3mdev l3mdev: l3mdev_master_upper_ifindex_by_index_rcu should be using netdev_master_upper_dev_get_rcu 2022-04-15 14:27:24 -07:00
lapb
llc net: rename reference+tracking helpers 2022-06-09 21:52:55 -07:00
mac80211 wifi: mac80211: fix invalid drv_sta_pre_rcu_remove calls for non-uploaded sta 2023-04-13 16:55:19 +02:00
mac802154 mac802154: fix missing INIT_LIST_HEAD in ieee802154_if_add() 2022-12-05 09:53:08 +01:00
mctp net: mctp: purge receive queues on sk destruction 2023-02-06 08:06:34 +01:00
mpls net: mpls: fix stale pointer if allocation fails during device rename 2023-02-22 12:59:53 +01:00
mptcp mptcp: fix UaF in listener shutdown 2023-03-30 12:49:00 +02:00
ncsi genetlink: start to validate reserved header bytes 2022-08-29 12:47:15 +01:00
netfilter netfilter: nft_redir: correct value of inet type .maxattrs 2023-03-22 13:33:42 +01:00
netlabel genetlink: start to validate reserved header bytes 2022-08-29 12:47:15 +01:00
netlink netlink: annotate lockless accesses to nlk->max_recvmsg_len 2023-04-13 16:55:24 +02:00
netrom netrom: Fix use-after-free caused by accept on already connected socket 2023-02-09 11:28:06 +01:00
nfc nfc: change order inside nfc_se_io error path 2023-03-17 08:50:17 +01:00
nsh
openvswitch net: openvswitch: fix possible memory leak in ovs_meter_cmd_set() 2023-02-22 12:59:52 +01:00
packet packet: do not set TP_STATUS_CSUM_VALID on CHECKSUM_COMPLETE 2022-11-29 08:30:18 -08:00
phonet net: remove noblock parameter from recvmsg() entities 2022-04-12 15:00:25 +02:00
psample genetlink: start to validate reserved header bytes 2022-08-29 12:47:15 +01:00
qrtr net: qrtr: Do not do DEL_SERVER broadcast after DEL_CLIENT 2023-04-13 16:55:21 +02:00
rds rds: rds_rm_zerocopy_callback() correct order for list_add_tail() 2023-03-10 09:33:02 +01:00
rfkill rfkill: make new event layout opt-in 2022-03-18 13:09:17 +02:00
rose net/rose: Fix to not accept on connected socket 2023-02-22 12:59:42 +01:00
rxrpc rxrpc: Fix missing unlock in rxrpc_do_sendmsg() 2022-12-31 13:32:55 +01:00
sched act_mirred: use the backlog for nested calls to mirred ingress 2023-03-30 12:49:20 +02:00
sctp sctp: check send stream number after wait_for_sndbuf 2023-04-13 16:55:21 +02:00
smc net/smc: fix deadlock triggered by cancel_delayed_work_syn() 2023-03-22 13:33:47 +01:00
strparser strparser: pad sk_skb_cb to avoid straddling cachelines 2022-07-08 18:38:44 -07:00
sunrpc sunrpc: only free unix grouplist after RCU settles 2023-04-13 16:55:23 +02:00
switchdev net: rename reference+tracking helpers 2022-06-09 21:52:55 -07:00
tipc tipc: fix kernel warning when sending SYN message 2023-02-22 12:59:53 +01:00
tls net: tls: fix device-offloaded sendpage straddling records 2023-03-17 08:50:26 +01:00
unix af_unix: fix struct pid leaks in OOB support 2023-03-17 08:50:28 +01:00
vmw_vsock net: vmw_vsock: vmci: Check memcpy_from_msg() 2022-12-31 13:32:26 +01:00
wireless wifi: cfg80211: fix MLO connection ownership 2023-03-22 13:33:43 +01:00
x25 net/x25: Fix to not accept on connected socket 2023-02-09 11:28:13 +01:00
xdp xsk: Add missing overflow check in xdp_umem_reg 2023-03-30 12:49:02 +02:00
xfrm xfrm: Zero padding when dumping algos and encap 2023-04-06 12:10:37 +02:00
compat.c use less confusing names for iov_iter direction initializers 2023-02-09 11:28:04 +01:00
devres.c
Kconfig Remove DECnet support from kernel 2022-08-22 14:26:30 +01:00
Kconfig.debug net: make NET_(DEV|NS)_REFCNT_TRACKER depend on NET 2022-09-20 14:23:56 -07:00
Makefile Remove DECnet support from kernel 2022-08-22 14:26:30 +01:00
socket.c net: avoid double iput when sock_alloc_file fails 2023-03-10 09:34:34 +01:00
sysctl_net.c