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BUG: KCSAN: data-race in pollwake / pollwake

write to 0xffffc900006abc30 of 4 bytes by interrupt on cpu 1:
 __pollwake fs/select.c:198 [inline]
 pollwake+0xbe/0x110 fs/select.c:218
 __wake_up_common kernel/sched/wait.c:89 [inline]
 __wake_up_common_lock kernel/sched/wait.c:106 [inline]
 __wake_up_sync_key+0x50/0x80 kernel/sched/wait.c:173
 sock_def_readable+0x70/0x1b0 net/core/sock.c:3338
 tcp_data_ready+0x1aa/0x280 net/ipv4/tcp_input.c:5150
 tcp_data_queue+0x11c9/0x2d70 net/ipv4/tcp_input.c:5230
 tcp_rcv_established+0x8fc/0xef0 net/ipv4/tcp_input.c:6177
 tcp_v4_do_rcv+0x2d4/0x630 net/ipv4/tcp_ipv4.c:1906
 tcp_v4_rcv+0x1aae/0x1d40 net/ipv4/tcp_ipv4.c:2329
 ip_protocol_deliver_rcu+0x356/0x6d0 net/ipv4/ip_input.c:205
 ip_local_deliver_finish+0x13c/0x1a0 net/ipv4/ip_input.c:233
 NF_HOOK include/linux/netfilter.h:314 [inline]
 ip_local_deliver+0xec/0x1c0 net/ipv4/ip_input.c:254
 dst_input include/net/dst.h:461 [inline]
 ip_sublist_rcv_finish net/ipv4/ip_input.c:580 [inline]
 ip_list_rcv_finish net/ipv4/ip_input.c:631 [inline]
 ip_sublist_rcv+0x4f0/0x5c0 net/ipv4/ip_input.c:639
 ip_list_rcv+0x25e/0x290 net/ipv4/ip_input.c:674
 __netif_receive_skb_list_ptype net/core/dev.c:5572 [inline]
 __netif_receive_skb_list_core+0x356/0x460 net/core/dev.c:5620
 __netif_receive_skb_list net/core/dev.c:5672 [inline]
 netif_receive_skb_list_internal+0x4e6/0x660 net/core/dev.c:5763
 gro_normal_list include/net/gro.h:439 [inline]
 napi_complete_done+0x1cb/0x450 net/core/dev.c:6103
 virtqueue_napi_complete drivers/net/virtio_net.c:440 [inline]
 virtnet_poll+0x7c0/0xae0 drivers/net/virtio_net.c:2158
 __napi_poll+0x60/0x3b0 net/core/dev.c:6533
 napi_poll net/core/dev.c:6602 [inline]
 net_rx_action+0x32b/0x750 net/core/dev.c:6735
 __do_softirq+0xc4/0x279 kernel/softirq.c:553
 invoke_softirq kernel/softirq.c:427 [inline]
 __irq_exit_rcu kernel/softirq.c:632 [inline]
 irq_exit_rcu+0x3b/0x90 kernel/softirq.c:644
 common_interrupt+0x7f/0x90 arch/x86/kernel/irq.c:247
 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:640
 kcsan_setup_watchpoint+0x3fe/0x410 kernel/kcsan/core.c:705
 batadv_nc_purge_paths+0x5a/0x260 net/batman-adv/network-coding.c:438
 batadv_nc_worker+0x402/0xac0 net/batman-adv/network-coding.c:722
 process_one_work kernel/workqueue.c:2627 [inline]
 process_scheduled_works+0x5b8/0xa30 kernel/workqueue.c:2700
 worker_thread+0x525/0x730 kernel/workqueue.c:2781
 kthread+0x1d7/0x210 kernel/kthread.c:388
 ret_from_fork+0x48/0x60 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242

write to 0xffffc900006abc30 of 4 bytes by task 3071 on cpu 0:
 __pollwake fs/select.c:198 [inline]
 pollwake+0xbe/0x110 fs/select.c:218
 __wake_up_common kernel/sched/wait.c:89 [inline]
 __wake_up_common_lock kernel/sched/wait.c:106 [inline]
 __wake_up_sync_key+0x50/0x80 kernel/sched/wait.c:173
 pipe_write+0x962/0xd20 fs/pipe.c:605
 call_write_iter include/linux/fs.h:2020 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x48a/0x790 fs/read_write.c:584
 ksys_write+0xeb/0x1a0 fs/read_write.c:637
 __do_sys_write fs/read_write.c:649 [inline]
 __se_sys_write fs/read_write.c:646 [inline]
 __x64_sys_write+0x42/0x50 fs/read_write.c:646
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x44/0x110 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

value changed: 0x00000000 -> 0x00000001

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 3071 Comm: syz-fuzzer Tainted: G        W          6.7.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
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