Eric Dumazet 3b1fae78be 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: 1da177e4c3 ("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>

2024-08-14 13:58:39 +02:00

..

bpf_sk_storage.c

bpf: Add length check for SK_DIAG_BPF_STORAGE_REQ_MAP_FD parsing

2023-07-27 10:07:56 -07:00

datagram.c

net: fix rc7's __skb_datagram_iter()

2024-07-18 13:21:13 +02:00

dev_addr_lists_test.c

kunit: Use KUNIT_EXPECT_MEMEQ macro

2022-10-27 02:40:14 -06:00

dev_addr_lists.c

net: extract a few internals from netdevice.h

2022-04-07 20:32:09 -07:00

dev_ioctl.c

net: omit ndo_hwtstamp_get() call when possible in dev_set_hwtstamp_phylib()

2023-08-06 13:25:10 +01:00

dev.c

net: give more chances to rcu in netdev_wait_allrefs_any()

2024-06-12 11:11:47 +02:00

dev.h

net: fix removing a namespace with conflicting altnames

2024-01-31 16:19:01 -08:00

drop_monitor.c

drop_monitor: replace spin_lock by raw_spin_lock

2024-06-27 13:49:01 +02:00

dst_cache.c

wireguard: device: reset peer src endpoint when netns exits

2021-11-29 19:50:45 -08:00

dst.c

net: remove unnecessary input parameter 'how' in ifdown function

2023-08-22 13:19:02 +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

fib: expand fib_rule_policy

2021-12-16 07:18:35 -08:00

filter.c

bpf: Fix a segment issue when downgrading gso_size

2024-08-03 08:54:38 +02:00

flow_dissector.c

net: flow_dissector: use DEBUG_NET_WARN_ON_ONCE

2024-08-03 08:54:05 +02:00

flow_offload.c

tc: flower: Enable offload support IPSEC SPI field.

2023-08-02 10:09:32 +01:00

gen_estimator.c

treewide: Convert del_timer*() to timer_shutdown*()

2022-12-25 13:38:09 -08:00

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: drop the weight argument from netif_napi_add

2022-09-28 18:57:14 -07:00

gro.c

net: gro: fix udp bad offset in socket lookup by adding {inner_}network_offset to napi_gro_cb

2024-05-17 12:02:07 +02:00

gso.c

net: move gso declarations and functions to their own files

2023-06-10 00:11:41 -07:00

hwbm.c

net: hwbm: Make the hwbm_pool lock a mutex

2019-06-09 19:40:10 -07:00

link_watch.c

net: linkwatch: use system_unbound_wq

2024-08-14 13:58:39 +02:00

lwt_bpf.c

lwt: Fix return values of BPF xmit ops

2023-08-18 16:05:26 +02:00

lwtunnel.c

xfrm: lwtunnel: squelch kernel warning in case XFRM encap type is not available

2022-10-12 10:45:51 +02:00

Makefile

net: move gso declarations and functions to their own files

2023-06-10 00:11:41 -07:00

neighbour.c

neighbour: Don't let neigh_forced_gc() disable preemption for long

2024-01-20 11:51:43 +01:00

net_namespace.c

netns: Make get_net_ns() handle zero refcount net

2024-06-27 13:49:06 +02:00

net-procfs.c

net-sysfs: display two backlog queue len separately

2023-03-22 12:03:52 +01:00

net-sysfs.c

net-sysfs: convert dev->operstate reads to lockless ones

2024-05-17 12:02:23 +02:00

net-sysfs.h

net-sysfs: add netdev_change_owner()

2020-02-26 20:07:25 -08:00

net-traces.c

udp6: add a missing call into udp_fail_queue_rcv_skb tracepoint

2023-07-07 09:16:52 +01:00

netclassid_cgroup.c

core: Variable type completion

2022-08-31 09:40:34 +01:00

netdev-genl-gen.c

net: ynl: prefix uAPI header include with uapi/

2023-05-26 10:30:14 +01:00

netdev-genl-gen.h

net: ynl: prefix uAPI header include with uapi/

2023-05-26 10:30:14 +01:00

netdev-genl.c

netdev-genl: use struct genl_info for reply construction

2023-08-15 15:01:03 -07:00

netevent.c

net: core: Correct function name netevent_unregister_notifier() in the kerneldoc

2021-03-28 17:56:56 -07:00

netpoll.c

netpoll: Fix race condition in netpoll_owner_active

2024-06-27 13:49:02 +02:00

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: add missing free_percpu when page_pool_init fail

2023-11-20 11:59:34 +01:00

pktgen.c

kthread: add kthread_stop_put

2024-06-12 11:12:52 +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

2024-01-31 16:19:00 -08:00

rtnetlink.c

rtnetlink: Don't ignore IFLA_TARGET_NETNSID when ifname is specified in rtnl_dellink().

2024-08-11 12:47:20 +02:00

scm.c

io_uring/unix: drop usage of io_uring socket

2024-03-26 18:19:09 -04:00

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: core: constify mac addrs in selftests

2021-10-24 13:59:44 +01:00

skbuff.c

net: core: reject skb_copy(_expand) for fraglist GSO skbs

2024-05-17 12:02:06 +02:00

skmsg.c

skmsg: Skip zero length skb in sk_msg_recvmsg

2024-07-18 13:21:12 +02:00

sock_destructor.h

skb_expand_head() adjust skb->truesize incorrectly

2021-10-22 12:35:51 -07:00

sock_diag.c

sock_diag: annotate data-races around sock_diag_handlers[family]

2024-03-26 18:19:22 -04:00

sock_map.c

sock_map: avoid race between sock_map_close and sk_psock_put

2024-06-21 14:38:40 +02:00

sock_reuseport.c

soreuseport: Fix socket selection for SO_INCOMING_CPU.

2022-10-25 11:35:16 +02:00

sock.c

net: do not leave a dangling sk pointer, when socket creation fails

2024-06-27 13:49:11 +02:00

stream.c

net: Return error from sk_stream_wait_connect() if sk_wait_event() fails

2024-01-01 12:42:30 +00:00

sysctl_net_core.c

net: make SK_MEMORY_PCPU_RESERV tunable

2024-05-02 16:32:36 +02:00

timestamping.c

net: Introduce a new MII time stamping interface.

2019-12-25 19:51:33 -08:00

tso.c

net: tso: inline tso_count_descs()

2022-12-12 15:04:39 -08:00

utils.c

net: core: inet[46]_pton strlen len types

2022-11-01 21:14:39 -07:00

xdp.c

xdp: fix invalid wait context of page_pool_destroy()

2024-08-03 08:53:44 +02:00