SYZFAIL: failed to send rpc
fd=3 want=160784 sent=156960 n=-1 (errno 32: Broken pipe)
lock order reversal:
 1st 0xffffffff83ccdde0 vnet_rwlock (vnet_rwlock, rw) @ /syzkaller/managers/main/kernel/sys/netinet/tcp_subr.c:1391
 2nd 0xfffffe007a9edaa0 tcpinp (tcpinp, rw) @ /syzkaller/managers/main/kernel/sys/netinet/in_pcb.c:1471
lock order vnet_rwlock -> tcpinp attempted at:
#0 0xffffffff81681cb2 at witness_checkorder+0x1652
#1 0xffffffff8154bb0a at _rw_wlock_cookie+0x14a
#2 0xffffffff819c5892 at _inp_smr_lock+0x1d2
#3 0xffffffff819c5de5 at inp_next+0x495
#4 0xffffffff81a4e23b at tcp_drain+0x24b
#5 0xffffffff81e12f48 at uma_reclaim_worker+0x238
#6 0xffffffff814aeedc at fork_exit+0xcc
#7 0xffffffff8210a90e at fork_trampoline+0xe
tap6: Ethernet address: 58:9c:fc:10:1b:7c
tap6: link state changed to UP