kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 0 PID: 4722 Comm: kworker/u4:6 Not tainted 4.17.0-rc1+ #10 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: rpciod rpc_async_schedule RIP: 0010:strlen+0x1f/0xa0 lib/string.c:479 RSP: 0018:ffff8801b175f320 EFLAGS: 00010282 RAX: dffffc0000000000 RBX: ffff8801cda07480 RCX: ffffffff86c94187 RDX: 0000000000000000 RSI: ffffffff86c8cafb RDI: 0000000000000000 RBP: ffff8801b175f338 R08: ffff8801b76ba100 R09: ffffed00340476f3 R10: ffffed00340476f3 R11: ffff8801a023b79f R12: 0000000000000000 R13: 0000000002000000 R14: 0000000000000000 R15: ffff8801b175f3e8 FS: 0000000000000000(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000f15978 CR3: 00000001b5583000 CR4: 00000000001406f0 DR0: 00000000200003c0 DR1: 00000000200003c0 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: strlen include/linux/string.h:267 [inline] encode_rpcb_string+0x23/0x70 net/sunrpc/rpcb_clnt.c:914 rpcb_enc_getaddr+0x146/0x1f0 net/sunrpc/rpcb_clnt.c:940 rpcauth_wrap_req_encode net/sunrpc/auth.c:777 [inline] rpcauth_wrap_req+0x1a8/0x230 net/sunrpc/auth.c:791 rpc_xdr_encode net/sunrpc/clnt.c:1754 [inline] call_transmit+0x8a9/0xfe0 net/sunrpc/clnt.c:1949 __rpc_execute+0x28a/0xf50 net/sunrpc/sched.c:784 rpc_async_schedule+0x16/0x20 net/sunrpc/sched.c:857 process_one_work+0xc1e/0x1b50 kernel/workqueue.c:2145 worker_thread+0x1cc/0x1440 kernel/workqueue.c:2279 kthread+0x345/0x410 kernel/kthread.c:238 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:412 Code: 37 ff ff ff 0f 1f 84 00 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 fa 48 c1 ea 03 48 89 e5 41 54 49 89 fc 53 48 83 ec 08 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 04 84 c0 75 4d 41 80 3c RIP: strlen+0x1f/0xa0 lib/string.c:479 RSP: ffff8801b175f320 ---[ end trace 45a95b0bcf65c109 ]---