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kernel_samsung_a53x/net/core
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Eric Dumazet 511ce8b5bf net: linkwatch: use system_unbound_wq 
[ Upstream commit 3e7917c0cdad835a5121520fc5686d954b7a61ab ]

linkwatch_event() grabs possibly very contended RTNL mutex.

system_wq is not suitable for such work.

Inspired by many noisy syzbot reports.

3 locks held by kworker/0:7/5266:
 #0: ffff888015480948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
 #0: ffff888015480948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
 #1: ffffc90003f6fd00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
 , at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
 #2: ffffffff8fa6f208 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:276

Reported-by: syzbot <syzkaller@googlegroups.com>
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Link: https://patch.msgid.link/20240805085821.1616528-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-23 23:20:22 +01:00
..
bpf_sk_storage.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
datagram.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
datagram.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
dev.c net: give more chances to rcu in netdev_wait_allrefs_any() 2024-11-19 12:26:55 +01:00
dev_addr_lists.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
dev_ioctl.c net: dev: Convert sa_data to flexible array in struct sockaddr 2024-11-18 22:25:41 +01:00
devlink.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drop_monitor.c drop_monitor: replace spin_lock by raw_spin_lock 2024-11-19 14:19:06 +01:00
dst.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
dst_cache.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
failover.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
fib_notifier.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
fib_rules.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
filter.c bpf: Fix a segment issue when downgrading gso_size 2024-11-23 23:20:17 +01:00
flow_dissector.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
flow_offload.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gen_estimator.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gen_stats.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gro_cells.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
hwbm.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
link_watch.c net: linkwatch: use system_unbound_wq 2024-11-23 23:20:22 +01:00
lwt_bpf.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
lwtunnel.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
Makefile Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
neighbour.c neighbour: Don't let neigh_forced_gc() disable preemption for long 2024-11-18 12:12:16 +01:00
net-procfs.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
net-sysfs.c Backport mac80211 patches from linux-6.1.y 2024-06-15 16:29:20 -03:00
net-sysfs.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
net-traces.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
net_namespace.c netns: Make get_net_ns() handle zero refcount net 2024-11-19 14:19:08 +01:00
netclassid_cgroup.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
netevent.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
netpoll.c netpoll: Fix race condition in netpoll_owner_active 2024-11-19 14:19:06 +01:00
netprio_cgroup.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
page_pool.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
pktgen.c net: pktgen: Fix interface flags printing 2024-11-08 11:26:11 +01:00
ptp_classifier.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
request_sock.c tcp: make sure init the accept_queue's spinlocks once 2024-11-18 12:12:59 +01:00
rtnetlink.c rtnetlink: Correct nested IFLA_VF_VLAN_LIST attribute validation 2024-11-19 11:32:45 +01:00
scm.c Revert "io_uring/unix: drop usage of io_uring socket" 2024-11-19 09:11:51 +01:00
secure_seq.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
skbuff.c kcov: Remove kcov include from sched.h and move it to its users. 2024-11-19 11:32:46 +01:00
skmsg.c bpf, sockmap: Fix sk->sk_forward_alloc warn_on in sk_stream_kill_queues 2024-11-19 14:19:42 +01:00
sock.c ipv6: Fix data races around sk->sk_prot. 2024-11-19 14:19:35 +01:00
sock_diag.c sock_diag: annotate data-races around sock_diag_handlers[family] 2024-11-19 08:44:38 +01:00
sock_map.c bpf, sockmap: Fix sk->sk_forward_alloc warn_on in sk_stream_kill_queues 2024-11-19 14:19:42 +01:00
sock_reuseport.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
stream.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
sysctl_net_core.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
timestamping.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
tso.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
utils.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
xdp.c xdp: fix invalid wait context of page_pool_destroy() 2024-11-23 23:20:08 +01:00