================================================================== BUG: KCSAN: data-race in xprt_connect / xprt_unlock_connect write to 0xffff8881034ef4c0 of 8 bytes by task 1523 on cpu 0: xprt_unlock_connect+0xa5/0xe0 net/sunrpc/xprt.c:808 xs_udp_setup_socket+0xf7/0x390 net/sunrpc/xprtsock.c:2186 process_one_work+0x40b/0x8d0 kernel/workqueue.c:2264 worker_thread+0xa0/0x800 kernel/workqueue.c:2410 kthread+0x1d4/0x200 drivers/block/aoe/aoecmd.c:1253 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352 read to 0xffff8881034ef4c0 of 8 bytes by task 25819 on cpu 1: xprt_release_write net/sunrpc/xprt.c:386 [inline] xprt_connect+0x318/0x3a0 net/sunrpc/xprt.c:857 call_connect+0x118/0x1a0 net/sunrpc/clnt.c:2086 __rpc_execute+0xf5/0x640 net/sunrpc/sched.c:904 rpc_execute+0x1b5/0x1c0 net/sunrpc/sched.c:982 rpc_run_task+0x379/0x440 net/sunrpc/clnt.c:1136 rpc_call_sync+0xa7/0x130 net/sunrpc/clnt.c:1165 rpc_ping net/sunrpc/clnt.c:2719 [inline] rpc_create_xprt+0x376/0x3d0 net/sunrpc/clnt.c:482 rpc_create+0x2e4/0x4e0 net/sunrpc/clnt.c:598 nfs_create_rpc_client+0x3d7/0x450 fs/nfs/client.c:532 nfs_init_client fs/nfs/client.c:647 [inline] nfs_init_client+0x69/0xc0 fs/nfs/client.c:634 nfs_get_client+0x91d/0xa00 fs/nfs/client.c:428 nfs_init_server+0x1d8/0x7a0 fs/nfs/client.c:686 nfs_create_server+0xcc/0x3d0 fs/nfs/client.c:973 nfs_try_mount+0xa0/0x560 fs/nfs/super.c:1904 nfs_fs_mount+0x7e7/0x15c0 fs/nfs/super.c:2766 legacy_get_tree+0x7e/0xf0 fs/fs_context.c:647 vfs_get_tree+0x56/0x1a0 fs/super.c:1545 do_new_mount fs/namespace.c:2822 [inline] do_mount+0x1004/0x14f0 fs/namespace.c:3142 ksys_mount+0xe8/0x160 fs/namespace.c:3351 __do_sys_mount fs/namespace.c:3365 [inline] __se_sys_mount fs/namespace.c:3362 [inline] __x64_sys_mount+0x70/0x90 fs/namespace.c:3362 do_syscall_64+0xcc/0x3a0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 25819 Comm: syz-executor.1 Not tainted 5.5.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================