AuxXxilium/linux_dsm_epyc7002
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a8b7b2d0b3
linux_dsm_epyc7002/net
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Jiri Pirko a8b7b2d0b3 sched: sch_api: add missing rcu read lock to silence the warning 
In case the qdisc_match_from_root function() is called from non-rcu path
with rtnl mutex held, a suspiciout rcu usage warning appears:

[  241.504354] =============================
[  241.504358] WARNING: suspicious RCU usage
[  241.504366] 5.8.0-rc4-custom-01521-g72a7c7d549c3 #32 Not tainted
[  241.504370] -----------------------------
[  241.504378] net/sched/sch_api.c:270 RCU-list traversed in non-reader section!!
[  241.504382]
               other info that might help us debug this:
[  241.504388]
               rcu_scheduler_active = 2, debug_locks = 1
[  241.504394] 1 lock held by tc/1391:
[  241.504398]  #0: ffffffff85a27850 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x49a/0xbd0
[  241.504431]
               stack backtrace:
[  241.504440] CPU: 0 PID: 1391 Comm: tc Not tainted 5.8.0-rc4-custom-01521-g72a7c7d549c3 #32
[  241.504446] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-2.fc32 04/01/2014
[  241.504453] Call Trace:
[  241.504465]  dump_stack+0x100/0x184
[  241.504482]  lockdep_rcu_suspicious+0x153/0x15d
[  241.504499]  qdisc_match_from_root+0x293/0x350

Fix this by passing the rtnl held lockdep condition down to
hlist_for_each_entry_rcu()

Reported-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20 17:00:02 -07:00
..
6lowpan treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
9p net: 9p: kerneldoc fixes 2020-07-13 17:20:39 -07:00
802 net: 802: psnap.c: Use built-in RCU list checking 2020-02-24 13:02:53 -08:00
8021q net: get rid of lockdep_set_class_and_subclass() 2020-06-28 21:37:23 -07:00
appletalk net: make ->{get,set}sockopt in proto_ops optional 2020-07-19 18:16:41 -07:00
atm net/atm: remove the atmdev_ops {get, set}sockopt methods 2020-07-19 18:16:40 -07:00
ax25 AX.25 Kconfig: Replace HTTP links with HTTPS ones 2020-07-13 12:34:06 -07:00
batman-adv batman-adv: Introduce a configurable per interface hop penalty 2020-06-26 10:37:11 +02:00
bluetooth net: make ->{get,set}sockopt in proto_ops optional 2020-07-19 18:16:41 -07:00
bpf bpf: Add tests for PTR_TO_BTF_ID vs. null comparison 2020-06-30 22:21:29 +02:00
bpfilter bpfilter: Allow to build bpfilter_umh as a module without static library 2020-07-14 12:37:06 -07:00
bridge netfilter/ebtables: clean up compat {get, set}sockopt handling 2020-07-19 18:16:40 -07:00
caif net: make ->{get,set}sockopt in proto_ops optional 2020-07-19 18:16:41 -07:00
can net: make ->{get,set}sockopt in proto_ops optional 2020-07-19 18:16:41 -07:00
ceph libceph: don't omit used_replica in target_copy() 2020-06-16 16:02:08 +02:00
core net: Call into DSA netdevice_ops wrappers 2020-07-20 16:48:22 -07:00
dcb dcb_doit: remove redundant skb check 2020-06-23 20:27:09 -07:00
dccp net/ipv6: remove compat_ipv6_{get,set}sockopt 2020-07-19 18:16:41 -07:00
decnet net: decnet: af_decnet: Simplify goto loop. 2020-07-17 12:56:11 -07:00
dns_resolver docs: networking: convert dns_resolver.txt to ReST 2020-04-28 14:39:46 -07:00
dsa net: dsa: Setup dsa_netdev_ops 2020-07-20 16:48:22 -07:00
ethernet net: move devres helpers into a separate source file 2020-05-23 16:56:17 -07:00
ethtool Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-07-11 00:46:00 -07:00
hsr Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-07-11 00:46:00 -07:00
ieee802154 net: remove compat_sock_common_{get,set}sockopt 2020-07-19 18:16:40 -07:00
ife net: Fix Kconfig indentation 2019-09-26 08:56:17 +02:00
ipv4 icmp: support rfc 4884 2020-07-19 19:20:22 -07:00
ipv6 net/ipv6: remove compat_ipv6_{get,set}sockopt 2020-07-19 18:16:41 -07:00
iucv net/af_iucv: clean up function prototypes 2020-05-19 12:50:14 -07:00
kcm treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
key net: make ->{get,set}sockopt in proto_ops optional 2020-07-19 18:16:41 -07:00
l2tp net/ipv6: remove compat_ipv6_{get,set}sockopt 2020-07-19 18:16:41 -07:00
l3mdev l3mdev: add infrastructure for table to VRF mapping 2020-06-20 17:22:22 -07:00
lapb treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
llc net: llc: kerneldoc fixes 2020-07-13 17:20:39 -07:00
mac80211 net: mac80211: kerneldoc fixes 2020-07-13 17:20:39 -07:00
mac802154 treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
mpls treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
mptcp net: remove compat_sock_common_{get,set}sockopt 2020-07-19 18:16:40 -07:00
ncsi treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
netfilter netfilter: split nf_sockopt 2020-07-19 18:16:40 -07:00
netlabel net: netlabel: kerneldoc fixes 2020-07-13 17:20:40 -07:00
netlink genetlink: remove genl_bind 2020-07-01 15:49:11 -07:00
netrom net: change addr_list_lock back to static key 2020-06-09 12:59:45 -07:00
nfc net: make ->{get,set}sockopt in proto_ops optional 2020-07-19 18:16:41 -07:00
nsh treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
openvswitch net: openvswitch: reorder masks array based on usage 2020-07-17 10:36:50 -07:00
packet net: make ->{get,set}sockopt in proto_ops optional 2020-07-19 18:16:41 -07:00
phonet net: make ->{get,set}sockopt in proto_ops optional 2020-07-19 18:16:41 -07:00
psample net: psample: fix build error when CONFIG_INET is not enabled 2020-05-23 16:36:05 -07:00
qrtr net: make ->{get,set}sockopt in proto_ops optional 2020-07-19 18:16:41 -07:00
rds net: rds: rdma_transport.h: delete duplicated word 2020-07-19 18:14:51 -07:00
rfkill rfkill: Fix incorrect check to avoid NULL pointer dereference 2019-12-16 10:15:49 +01:00
rose net: change addr_list_lock back to static key 2020-06-09 12:59:45 -07:00
rxrpc net: rxrpc: kerneldoc fixes 2020-07-13 17:20:40 -07:00
sched sched: sch_api: add missing rcu read lock to silence the warning 2020-07-20 17:00:02 -07:00
sctp sctp: remove the out_nounlock label in sctp_setsockopt 2020-07-19 18:26:44 -07:00
smc net: make ->{get,set}sockopt in proto_ops optional 2020-07-19 18:16:41 -07:00
strparser
sunrpc Fixes for a umask bug on exported filesystems lacking ACL support, a 2020-07-02 20:35:33 -07:00
switchdev net: switchdev: kerneldoc fixes 2020-07-13 17:20:40 -07:00
tipc net: tipc: kerneldoc fixes 2020-07-13 17:20:40 -07:00
tls net/tls: Add asynchronous resync 2020-06-27 14:00:22 -07:00
unix net: make ->{get,set}sockopt in proto_ops optional 2020-07-19 18:16:41 -07:00
vmw_vsock net: make ->{get,set}sockopt in proto_ops optional 2020-07-19 18:16:41 -07:00
wimax wimax: no need to check return value of debugfs_create functions 2019-08-10 15:25:47 -07:00
wireless net: wireless: kerneldoc fixes 2020-07-13 17:20:40 -07:00
x25 net: x25: kerneldoc fixes 2020-07-13 17:20:40 -07:00
xdp Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2020-07-13 18:04:05 -07:00
xfrm Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-07-11 00:46:00 -07:00
compat.c net: remove compat_sys_{get,set}sockopt 2020-07-19 18:16:40 -07:00
devres.c net: devres: rename the release callback of devm_register_netdev() 2020-06-30 15:57:34 -07:00
Kconfig net: ethtool: Remove PHYLIB direct dependency 2020-07-07 15:41:05 -07:00
Makefile net: move devres helpers into a separate source file 2020-05-23 16:56:17 -07:00
socket.c net: make ->{get,set}sockopt in proto_ops optional 2020-07-19 18:16:41 -07:00
sysctl_net.c