panic: kernel diagnostic assertion "(rt->rt_flags & RTF_MPATH) || mrt->rt_priority != prio" failed: file "/syzkaller/managers/main/kernel/sys/net/rtable.c", line 569 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 67502 82099 0 0 0x4000000 0 syz-executor.1 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic() at panic+0x15c sys/kern/subr_prf.c:212 __assert(ffffffff81f7c399,ffffffff81f3aad6,239,ffffffff81f16fee) at __assert+0x2e sys/kern/subr_prf.c:159 rtable_insert(0,ffff800000982240,0,ffff800000a45090,38,fffffd80329f0c48) at rtable_insert+0x66b sys/net/rtable.c:569 rtrequest(1,ffff800016a313d0,38,ffff800016a31348,0) at rtrequest+0x875 sys/net/route.c:928 rtm_output(ffff800000a45000,ffff800016a31478,ffff800016a313d0,38,0) at rtm_output+0x6e5 sys/net/rtsock.c:896 route_output(fffffd8035ca1000,fffffd8037054c00,0,0) at route_output+0x7d7 sys/net/rtsock.c:814 route_usrreq(fffffd8037054c00,9,fffffd8035ca1000,0,0,ffff800015a2b530) at route_usrreq+0x363 sys/net/rtsock.c:271 sosend(fffffd8037054c00,0,ffff800016a31670,0,0,80) at sosend+0x660 sys/kern/uipc_socket.c:513 sendit(ffff800015a2b530,3,ffff800016a31750,0,ffff800016a31860) at sendit+0x53c sys/kern/uipc_syscalls.c:662 sys_sendto(ffff800015a2b530,ffff800016a317f8,ffff800016a31860) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:527 syscall(ffff800016a318d0) at syscall+0x511 Xsyscall(6,0,ffffffffffffffd8,0,6,40c5add9010) at Xsyscall+0x128 end of kernel end trace frame: 0x40ef2399dd0, count: 2 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs.