login: 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 *485332 48272 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,ffff80000099ce80,0,ffff800000a08490,38,fffffd803471a7e8) at rtable_insert+0x66b sys/net/rtable.c:569 rtrequest(1,ffff800015a23040,38,ffff800015a22fb8,0) at rtrequest+0x875 sys/net/route.c:928 rtm_output(ffff800000a08400,ffff800015a230e8,ffff800015a23040,38,0) at rtm_output+0x6e5 sys/net/rtsock.c:896 route_output(fffffd8036d2ec00,fffffd80363f7a88,0,0) at route_output+0x7d7 sys/net/rtsock.c:814 route_usrreq(fffffd80363f7a88,9,fffffd8036d2ec00,0,0,ffff8000149c4270) at route_usrreq+0x363 sys/net/rtsock.c:271 sosend(fffffd80363f7a88,0,ffff800015a232e0,0,0,80) at sosend+0x660 sys/kern/uipc_socket.c:513 sendit(ffff8000149c4270,3,ffff800015a233c0,0,ffff800015a234d0) at sendit+0x53c sys/kern/uipc_syscalls.c:662 sys_sendto(ffff8000149c4270,ffff800015a23468,ffff800015a234d0) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:527 syscall(ffff800015a23540) at syscall+0x511 Xsyscall(6,0,ffffffffffffffd8,0,6,6ea92b1f010) at Xsyscall+0x128 end of kernel end trace frame: 0x6ece4ef8fb0, 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. ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show 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 ddb> trace 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,ffff80000099ce80,0,ffff800000a08490,38,fffffd803471a7e8) at rtable_insert+0x66b sys/net/rtable.c:569 rtrequest(1,ffff800015a23040,38,ffff800015a22fb8,0) at rtrequest+0x875 sys/net/route.c:928 rtm_output(ffff800000a08400,ffff800015a230e8,ffff800015a23040,38,0) at rtm_output+0x6e5 sys/net/rtsock.c:896 route_output(fffffd8036d2ec00,fffffd80363f7a88,0,0) at route_output+0x7d7 sys/net/rtsock.c:814 route_usrreq(fffffd80363f7a88,9,fffffd8036d2ec00,0,0,ffff8000149c4270) at route_usrreq+0x363 sys/net/rtsock.c:271 sosend(fffffd80363f7a88,0,ffff800015a232e0,0,0,80) at sosend+0x660 sys/kern/uipc_socket.c:513 sendit(ffff8000149c4270,3,ffff800015a233c0,0,ffff800015a234d0) at sendit+0x53c sys/kern/uipc_syscalls.c:662 sys_sendto(ffff8000149c4270,ffff800015a23468,ffff800015a234d0) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:527 syscall(ffff800015a23540) at syscall+0x511 Xsyscall(6,0,ffffffffffffffd8,0,6,6ea92b1f010) at Xsyscall+0x128 end of kernel end trace frame: 0x6ece4ef8fb0, count: -13 ddb> show registers rdi 0xffffffff81db3e57 db_enter+0x17 rsi 0x4975 __ALIGN_SIZE+0x3975 rbp 0xffff800015a22d00 rbx 0xffff800015a22db0 rdx 0x4976 __ALIGN_SIZE+0x3976 rcx 0xffff800016bfd000 rax 0xffff800016bfd000 r8 0xffff800015a22cc0 r9 0x1 r10 0xffff800000994b80 r11 0x71aa0d708d1baafa r12 0x3000000008 r13 0xffff800015a22d10 r14 0x100 r15 0x1 rip 0xffffffff81db3e58 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800015a22cf0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (syz-executor.1) pid=485332 stat=onproc flags process=0 proc=4000000 pri=73, usrpri=73, nice=20 forw=0xffffffffffffffff, list=0xffff8000149c4720,0xffffffff822b7b98 process=0xffff8000ffff7078 user=0xffff800015a1e000, vmspace=0xfffffd803f014528 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 48272 522456 82110 0 2 0 syz-executor.1 *48272 485332 82110 0 7 0x4000000 syz-executor.1 78951 103206 97347 0 2 0 syz-executor.0 78951 51280 97347 0 2 0x4000000 syz-executor.0 51309 37593 1 0 3 0x100083 ttyin getty 9160 281206 0 0 3 0x14200 bored sosplice 97347 261431 5314 0 3 0x82 nanosleep syz-executor.0 82110 498716 5314 0 2 0x482 syz-executor.1 5314 41836 29356 0 3 0x82 thrsleep syz-fuzzer 5314 163366 29356 0 3 0x4000082 thrsleep syz-fuzzer 5314 477295 29356 0 3 0x4000082 thrsleep syz-fuzzer 5314 271149 29356 0 3 0x4000082 thrsleep syz-fuzzer 5314 117358 29356 0 3 0x4000082 thrsleep syz-fuzzer 5314 177230 29356 0 3 0x4000082 kqread syz-fuzzer 5314 44246 29356 0 3 0x4000082 thrsleep syz-fuzzer 29356 368210 11651 0 3 0x10008a pause ksh 11651 116756 79653 0 3 0x92 select sshd 79653 282143 1 0 3 0x80 select sshd 15011 498695 7337 73 3 0x100090 kqread syslogd 7337 455753 1 0 3 0x100082 netio syslogd 92031 496327 1 77 3 0x100090 poll dhclient 73086 102805 1 0 3 0x80 poll dhclient 56217 365036 0 0 2 0x14200 zerothread 36264 369001 0 0 3 0x14200 aiodoned aiodoned 1890 129694 0 0 3 0x14200 syncer update 27468 476320 0 0 3 0x14200 cleaner cleaner 52046 447370 0 0 3 0x14200 reaper reaper 57918 312852 0 0 3 0x14200 pgdaemon pagedaemon 80246 308440 0 0 3 0x14200 bored crynlk 5535 287529 0 0 3 0x14200 bored crypto 16524 243328 0 0 3 0x40014200 acpi0 acpi0 65848 504584 0 0 3 0x14200 bored softnet 8677 321927 0 0 2 0x14200 systqmp 16329 477991 0 0 3 0x14200 bored systq 5739 398444 0 0 3 0x40014200 bored softclock 41605 510640 0 0 3 0x40014200 idle0 44487 467112 0 0 3 0x14200 bored smr 1 370060 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9514 6485K 6796K 78643K 14054 0 0 pcb 24 9K 10K 78643K 1012 0 0 rtable 123 5K 5K 78643K 591 0 0 ifaddr 56 13K 14K 78643K 233 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 77 0 0 iov 1 12K 24K 78643K 245 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1198 75K 76K 78643K 2769 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 5K 78643K 20 0 0 VM map 2 0K 0K 78643K 2 0 0 sem 12 0K 0K 78643K 125 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12537 0 0 file desc 6 17K 25K 78643K 1976 0 0 sigio 0 0K 0K 78643K 46 0 0 proc 42 30K 46K 78643K 508 0 0 subproc 32 2K 2K 78643K 34 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 ip_moptions 0 0K 0K 78643K 216 0 0 in_multi 33 2K 2K 78643K 112 0 0 ether_multi 1 0K 0K 78643K 17 0 0 mrt 0 0K 0K 78643K 9 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 84 371K 371K 78643K 84 0 0 exec 0 0K 1K 78643K 293 0 0 pagedep 1 8K 8K 78643K 1 0 0 inodedep 1 32K 32K 78643K 1 0 0 newblk 1 0K 0K 78643K 1 0 0 VM swap 7 26K 26K 78643K 7 0 0 UVM amap 86 20K 39K 78643K 5584 0 0 UVM aobj 86 3K 3K 78643K 92 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 0 0K 0K 78643K 72 0 0 NDP 11 0K 0K 78643K 62 0 0 temp 164 2715K 3348K 78643K 8770 0 0 kqueue 0 0K 0K 78643K 16 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 6 0 0 1 0 1 1 0 8 0 inpcbpl 280 836 0 829 1 0 1 1 0 8 0 plimitpl 152 57 0 50 1 0 1 1 0 8 0 rtentry 112 54 0 8 2 0 2 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpcb 544 319 0 315 1 0 1 1 0 8 0 nd6 48 6 0 0 1 0 1 1 0 8 0 ppxss 1128 33 0 33 8 7 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 194 0 0 13 0 13 13 0 8 0 art_table 32 195 0 0 2 0 2 2 0 8 0 art_node 16 46 0 4 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 2 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 121 0 111 1 0 1 1 0 8 0 shmpl 112 90 0 6 3 0 3 3 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 4731 0 3300 47 0 47 47 0 8 0 ffsino 240 4731 0 3300 85 0 85 85 0 8 0 nchpl 144 7725 0 6100 61 0 61 61 0 8 0 uvmvnodes 72 5602 0 0 102 0 102 102 0 8 0 vnodes 200 5602 0 0 295 0 295 295 0 8 0 namei 1024 23276 0 23276 1 0 1 1 0 8 1 scsiplug 64 5 0 5 3 3 0 1 0 8 0 scxspl 192 25704 0 25704 14 13 1 6 0 8 1 sigapl 432 2150 0 2136 2 0 2 2 0 8 0 futexpl 56 30812 0 30812 1 0 1 1 0 8 1 knotepl 112 367 0 348 1 0 1 1 0 8 0 kqueuepl 104 406 0 404 1 0 1 1 0 8 0 pipepl 112 1282 0 1263 5 4 1 2 0 8 0 fdescpl 424 2151 0 2136 2 0 2 2 0 8 0 filepl 120 12774 0 12677 5 1 4 5 0 8 0 lockfpl 104 788 0 787 2 1 1 1 0 8 0 lockfspl 48 260 0 259 2 1 1 1 0 8 0 sessionpl 112 20 0 10 1 0 1 1 0 8 0 pgrppl 48 58 0 48 1 0 1 1 0 8 0 ucredpl 96 3032 0 3025 1 0 1 1 0 8 0 zombiepl 144 2136 0 2136 2 1 1 1 0 8 1 processpl 840 2166 0 2136 4 0 4 4 0 8 0 procpl 600 4751 0 4713 4 0 4 4 0 8 0 sosppl 128 22 0 22 6 6 0 1 0 8 0 sockpl 384 1709 0 1691 4 1 3 4 0 8 1 mcl64k 65536 808 0 808 94 94 0 64 0 8 0 mcl16k 16384 6 0 6 4 4 0 1 0 8 0 mcl12k 12288 39 0 39 6 5 1 1 0 8 1 mcl9k 9216 31 0 31 6 6 0 1 0 8 0 mcl8k 8192 33 0 33 8 8 0 1 0 8 0 mcl4k 4096 93 0 93 4 3 1 1 0 8 1 mcl2k2 2112 12 0 12 7 7 0 1 0 8 0 mcl2k 2048 54500 0 54455 15 8 7 11 0 8 0 mtagpl 80 6 0 2 2 1 1 1 0 8 0 mbufpl 256 99412 0 99327 55 47 8 39 0 8 0 bufpl 256 12745 0 6805 372 0 372 372 0 8 0 anonpl 16 218617 0 209518 103 50 53 53 0 62 16 amapchunkpl 152 9822 0 9713 28 22 6 15 0 158 0 amappl16 192 11715 0 11244 94 62 32 36 0 8 8 amappl15 184 3 0 3 2 2 0 1 0 8 0 amappl14 176 36 0 34 2 1 1 1 0 8 0 amappl13 168 1944 0 1940 2 1 1 1 0 8 0 amappl12 160 16 0 13 1 0 1 1 0 8 0 amappl11 152 55 0 41 1 0 1 1 0 8 0 amappl10 144 67 0 65 2 1 1 1 0 8 0 amappl9 136 537 0 534 1 0 1 1 0 8 0 amappl8 128 133 0 120 1 0 1 1 0 8 0 amappl7 120 33 0 30 1 0 1 1 0 8 0 amappl6 112 56 0 48 1 0 1 1 0 8 0 amappl5 104 179 0 167 1 0 1 1 0 8 0 amappl4 96 2320 0 2296 1 0 1 1 0 8 0 amappl3 88 246 0 235 1 0 1 1 0 8 0 amappl2 80 17562 0 17487 4 2 2 3 0 8 0 amappl1 72 47491 0 47066 26 17 9 19 0 8 0 amappl 80 5046 0 5006 1 0 1 1 0 84 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma64 64 259 0 259 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 17 0 17 1 1 0 1 0 8 0 aobjpl 64 91 0 6 2 0 2 2 0 8 0 uaddrrnd 24 2151 0 2136 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2151 0 2136 1 0 1 1 0 8 0 vmmpekpl 168 14359 0 14332 2 0 2 2 0 8 0 vmmpepl 168 222343 0 220815 142 64 78 90 0 357 11 vmsppl 264 2150 0 2136 2 1 1 2 0 8 0 pdppl 4096 4308 0 4272 6 1 5 6 0 8 0 pvpl 32 638612 0 626375 242 91 151 174 0 265 51 pmappl 200 2150 0 2136 1 0 1 1 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 664 0 167 15 0 15 15 0 8 0