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BUG: KCSAN: data-race in macsec_handle_frame / macsec_handle_frame

read-write to 0xffff88813c675160 of 8 bytes by task 21887 on cpu 1:
 handle_not_macsec drivers/net/macsec.c:1062 [inline]
 macsec_handle_frame+0x49d/0x13e0 drivers/net/macsec.c:1109
 __netif_receive_skb_core+0xa4e/0x1ce0 net/core/dev.c:5383
 __netif_receive_skb_one_core net/core/dev.c:5487 [inline]
 __netif_receive_skb+0x52/0x1b0 net/core/dev.c:5603
 netif_receive_skb_internal+0x37/0x150 net/core/dev.c:5689
 netif_receive_skb+0x16/0x170 net/core/dev.c:5748
 tun_rx_batched+0x3b0/0x3f0
 tun_get_user+0x1260/0x1550 drivers/net/tun.c:1995
 tun_chr_write_iter+0x18a/0x240 drivers/net/tun.c:2025
 call_write_iter include/linux/fs.h:2191 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x468/0x760 fs/read_write.c:584
 ksys_write+0xe8/0x1a0 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+0x3e/0x50 fs/read_write.c:646
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

read-write to 0xffff88813c675160 of 8 bytes by task 21888 on cpu 0:
 handle_not_macsec drivers/net/macsec.c:1062 [inline]
 macsec_handle_frame+0x49d/0x13e0 drivers/net/macsec.c:1109
 __netif_receive_skb_core+0xa4e/0x1ce0 net/core/dev.c:5383
 __netif_receive_skb_one_core net/core/dev.c:5487 [inline]
 __netif_receive_skb+0x52/0x1b0 net/core/dev.c:5603
 netif_receive_skb_internal+0x37/0x150 net/core/dev.c:5689
 netif_receive_skb+0x16/0x170 net/core/dev.c:5748
 tun_rx_batched+0x3b0/0x3f0
 tun_get_user+0x1260/0x1550 drivers/net/tun.c:1995
 tun_chr_write_iter+0x18a/0x240 drivers/net/tun.c:2025
 call_write_iter include/linux/fs.h:2191 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x468/0x760 fs/read_write.c:584
 ksys_write+0xe8/0x1a0 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+0x3e/0x50 fs/read_write.c:646
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

value changed: 0x00000000000006f6 -> 0x00000000000006f7

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 21888 Comm: syz-executor.5 Not tainted 6.1.0-rc1-syzkaller-00093-g6d36c728bc2e-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
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