panic: tcp_output
Stopped at      db_enter+0x18:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*196895   9333      0           0  0x4000000    1  syz-executor.6
 125938  13915      0           0  0x4000000    0  syz-executor.1
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8257e141) at panic+0x177 sys/kern/subr_prf.c:198
tcp_output(ffff800000d33c20) at tcp_output+0x2cd2 sys/netinet/tcp_output.c:727
tcp_send(fffffd806e45d3e8,fffffd80677e0d00,fffffd80677e0c00,fffffd80677e0a00) at tcp_send+0xc4 sys/netinet/tcp_usrreq.c:944
sosend(fffffd806e45d3e8,fffffd80677e0c00,ffff80002e4e0480,0,fffffd80677e0a00,0) at sosend+0x62a pru_send sys/sys/protosw.h:331 [inline]
sosend(fffffd806e45d3e8,fffffd80677e0c00,ffff80002e4e0480,0,fffffd80677e0a00,0) at sosend+0x62a sys/kern/uipc_socket.c:646
sendit(ffff8000ffff57a0,3,ffff80002e4e0600,0,ffff80002e4e06f0) at sendit+0x65d sys/kern/uipc_syscalls.c:694
sys_sendmsg(ffff8000ffff57a0,ffff80002e4e06a8,ffff80002e4e06f0) at sys_sendmsg+0x198 sys/kern/uipc_syscalls.c:601
syscall(ffff80002e4e0770) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline]
syscall(ffff80002e4e0770) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x8f5f87edb70, count: 6
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