================================================================== BUG: KCSAN: data-race in __inet_hash_connect / inet_send_prepare write to 0xffff8881419432ce of 2 bytes by task 26310 on cpu 0: inet_bind_hash net/ipv4/inet_hashtables.c:98 [inline] __inet_hash_connect+0x716/0x900 net/ipv4/inet_hashtables.c:829 inet6_hash_connect+0x77/0x80 net/ipv6/inet6_hashtables.c:327 tcp_v6_connect+0x983/0xbb0 net/ipv6/tcp_ipv6.c:311 __inet_stream_connect+0x156/0x6d0 net/ipv4/af_inet.c:664 inet_stream_connect+0x44/0x70 net/ipv4/af_inet.c:728 __sys_connect_file net/socket.c:1837 [inline] __sys_connect+0x245/0x280 net/socket.c:1854 __do_sys_connect net/socket.c:1864 [inline] __se_sys_connect net/socket.c:1861 [inline] __x64_sys_connect+0x3d/0x50 net/socket.c:1861 do_syscall_64+0x34/0x50 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff8881419432ce of 2 bytes by task 26315 on cpu 1: inet_send_prepare+0x21/0x210 net/ipv4/af_inet.c:806 inet6_sendmsg+0x29/0x80 net/ipv6/af_inet6.c:639 sock_sendmsg_nosec net/socket.c:654 [inline] sock_sendmsg net/socket.c:674 [inline] sock_write_iter+0x1a4/0x200 net/socket.c:1001 call_write_iter include/linux/fs.h:1977 [inline] new_sync_write fs/read_write.c:518 [inline] vfs_write+0x69d/0x770 fs/read_write.c:605 ksys_write+0xce/0x180 fs/read_write.c:658 __do_sys_write fs/read_write.c:670 [inline] __se_sys_write fs/read_write.c:667 [inline] __x64_sys_write+0x3e/0x50 fs/read_write.c:667 do_syscall_64+0x34/0x50 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 26315 Comm: syz-executor.1 Not tainted 5.12.0-rc8-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================