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BUG: KCSAN: data-race in dccp_poll / dccp_rcv_reset

write to 0xffff8881410044e2 of 1 bytes by interrupt on cpu 0:
 dccp_fin net/dccp/input.c:38 [inline]
 dccp_rcv_reset+0xad/0x190 net/dccp/input.c:152
 dccp_rcv_state_process+0x2fb/0x4d0 net/dccp/input.c:662
 dccp_v4_do_rcv+0x8f/0xe0 net/dccp/ipv4.c:695
 sk_backlog_rcv include/net/sock.h:1100 [inline]
 __sk_receive_skb+0x22e/0x590 net/core/sock.c:565
 dccp_v4_rcv+0xc55/0xe90 net/dccp/ipv4.c:889
 ip_protocol_deliver_rcu+0x23f/0x490 net/ipv4/ip_input.c:205
 ip_local_deliver_finish+0x126/0x160 net/ipv4/ip_input.c:233
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip_local_deliver+0x100/0x1b0 net/ipv4/ip_input.c:254
 dst_input include/net/dst.h:461 [inline]
 ip_rcv_finish net/ipv4/ip_input.c:444 [inline]
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip_rcv+0x1b1/0x260 net/ipv4/ip_input.c:564
 __netif_receive_skb_one_core net/core/dev.c:5485 [inline]
 __netif_receive_skb+0x8b/0x1b0 net/core/dev.c:5599
 process_backlog+0x23f/0x3b0 net/core/dev.c:5927
 __napi_poll+0x65/0x390 net/core/dev.c:6511
 napi_poll net/core/dev.c:6578 [inline]
 net_rx_action+0x37e/0x730 net/core/dev.c:6689
 __do_softirq+0x158/0x2e3 kernel/softirq.c:571
 __irq_exit_rcu kernel/softirq.c:650 [inline]
 irq_exit_rcu+0x41/0x70 kernel/softirq.c:662
 sysvec_apic_timer_interrupt+0x8d/0xb0 arch/x86/kernel/apic/apic.c:1106
 asm_sysvec_apic_timer_interrupt+0x16/0x20
 check_access kernel/kcsan/core.c:736 [inline]
 __tsan_read8+0xed/0x180 kernel/kcsan/core.c:1014
 kernfs_root fs/kernfs/kernfs-internal.h:68 [inline]
 kernfs_put+0x68/0x300 fs/kernfs/dir.c:523
 __kernfs_remove+0x650/0x6b0 fs/kernfs/dir.c:1407
 kernfs_remove_by_name_ns+0x6c/0xb0 fs/kernfs/dir.c:1589
 kernfs_remove_by_name include/linux/kernfs.h:615 [inline]
 remove_files fs/sysfs/group.c:28 [inline]
 sysfs_remove_group+0x99/0x1a0 fs/sysfs/group.c:288
 sysfs_remove_groups+0x3b/0x80 fs/sysfs/group.c:312
 device_remove_groups drivers/base/core.c:2579 [inline]
 device_remove_attrs+0x14d/0x190 drivers/base/core.c:2799
 device_del+0x408/0x8c0 drivers/base/core.c:3703
 netdev_unregister_kobject+0x111/0x120 net/core/net-sysfs.c:1987
 unregister_netdevice_many+0xc50/0x1040 net/core/dev.c:10889
 default_device_exit_batch+0x479/0x4d0 net/core/dev.c:11356
 ops_exit_list net/core/net_namespace.c:168 [inline]
 cleanup_net+0x4dc/0x8d0 net/core/net_namespace.c:595
 process_one_work+0x3d3/0x720 kernel/workqueue.c:2289
 worker_thread+0x618/0xa70 kernel/workqueue.c:2436
 kthread+0x1a9/0x1e0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30

read to 0xffff8881410044e2 of 1 bytes by task 32471 on cpu 1:
 dccp_poll+0xe0/0x3c0 net/dccp/proto.c:326
 sock_poll+0x23e/0x260 net/socket.c:1353
 vfs_poll include/linux/poll.h:88 [inline]
 io_poll_check_events+0x183/0x360 io_uring/poll.c:233
 io_apoll_task_func+0x1a/0xa0 io_uring/poll.c:295
 handle_tw_list+0x12a/0x180 io_uring/io_uring.c:984
 tctx_task_work+0x72/0x360 io_uring/io_uring.c:1031
 task_work_run+0x8e/0x110 kernel/task_work.c:177
 get_signal+0xeca/0x1020 kernel/signal.c:2634
 arch_do_signal_or_restart+0x87/0x2d0 arch/x86/kernel/signal.c:869
 exit_to_user_mode_loop+0x78/0x130 kernel/entry/common.c:166
 exit_to_user_mode_prepare kernel/entry/common.c:201 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
 syscall_exit_to_user_mode+0x6a/0x90 kernel/entry/common.c:294
 do_syscall_64+0x37/0x70 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

value changed: 0x00 -> 0x03

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 32471 Comm: syz-executor.1 Tainted: G        W          6.0.0-rc4-syzkaller-00302-gb96fbd602d35-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
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