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 *125965 40975 0 0 0 0 syz-executor9836 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(ffffffff81f7d03e,ffffffff81f3c041,239,ffffffff81f187eb) at __assert+0x2e sys/kern/subr_prf.c:159 rtable_insert(0,ffff80000098fb00,0,ffff8000006a1d90,38,fffffd8036db14d0) at rtable_insert+0x66b sys/net/rtable.c:569 rtrequest(1,ffff800014990200,38,ffff800014990178,0) at rtrequest+0x875 sys/net/route.c:928 rtm_output(ffff8000006a1d00,ffff8000149902a8,ffff800014990200,38,0) at rtm_output+0x6e5 sys/net/rtsock.c:896 route_output(fffffd8035256200,fffffd8037035180,0,0) at route_output+0x7d7 sys/net/rtsock.c:814 route_usrreq(fffffd8037035180,9,fffffd8035256200,0,0,ffff8000ffff5528) at route_usrreq+0x363 sys/net/rtsock.c:271 sosend(fffffd8037035180,0,ffff8000149904a0,0,0,80) at sosend+0x660 sys/kern/uipc_socket.c:513 sendit(ffff8000ffff5528,4,ffff800014990580,0,ffff800014990690) at sendit+0x53c sys/kern/uipc_syscalls.c:662 sys_sendto(ffff8000ffff5528,ffff800014990628,ffff800014990690) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:527 syscall(ffff800014990700) at syscall+0x511 Xsyscall(6,0,3dc,0,53,4) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffef9b0, 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(ffffffff81f7d03e,ffffffff81f3c041,239,ffffffff81f187eb) at __assert+0x2e sys/kern/subr_prf.c:159 rtable_insert(0,ffff80000098fb00,0,ffff8000006a1d90,38,fffffd8036db14d0) at rtable_insert+0x66b sys/net/rtable.c:569 rtrequest(1,ffff800014990200,38,ffff800014990178,0) at rtrequest+0x875 sys/net/route.c:928 rtm_output(ffff8000006a1d00,ffff8000149902a8,ffff800014990200,38,0) at rtm_output+0x6e5 sys/net/rtsock.c:896 route_output(fffffd8035256200,fffffd8037035180,0,0) at route_output+0x7d7 sys/net/rtsock.c:814 route_usrreq(fffffd8037035180,9,fffffd8035256200,0,0,ffff8000ffff5528) at route_usrreq+0x363 sys/net/rtsock.c:271 sosend(fffffd8037035180,0,ffff8000149904a0,0,0,80) at sosend+0x660 sys/kern/uipc_socket.c:513 sendit(ffff8000ffff5528,4,ffff800014990580,0,ffff800014990690) at sendit+0x53c sys/kern/uipc_syscalls.c:662 sys_sendto(ffff8000ffff5528,ffff800014990628,ffff800014990690) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:527 syscall(ffff800014990700) at syscall+0x511 Xsyscall(6,0,3dc,0,53,4) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffef9b0, count: -13 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001498fec0 rbx 0xffff80001498ff70 rdx 0x2 rcx 0x1 rax 0x1 r8 0xffff80001498fe80 r9 0x1 r10 0xde8a19c112159fe5 r11 0x52e632fbf53063b0 r12 0x3000000008 r13 0xffff80001498fed0 r14 0x100 r15 0x1 rip 0xffffffff819b5b38 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001498feb0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (syz-executor9836) pid=125965 stat=onproc flags process=0 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff52d0,0xffffffff82296ba0 process=0xffff800014952d38 user=0xffff80001498b000, vmspace=0xfffffd803f013528 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND *40975 125965 61710 0 7 0 syz-executor9836 61710 284724 77891 0 3 0x82 nanosleep syz-executor9836 77891 467861 20372 0 3 0x10008a pause ksh 20372 10925 9322 0 2 0x12 sshd 27561 348260 1 0 3 0x100083 ttyin getty 9322 296720 1 0 3 0x80 select sshd 52025 351491 29266 73 3 0x100090 kqread syslogd 29266 388221 1 0 3 0x100082 netio syslogd 86137 505722 1 77 3 0x100090 poll dhclient 93171 7000 1 0 3 0x80 poll dhclient 91927 245323 0 0 2 0x14200 zerothread 93729 506710 0 0 3 0x14200 aiodoned aiodoned 81688 260023 0 0 3 0x14200 syncer update 14011 357988 0 0 3 0x14200 cleaner cleaner 34272 509137 0 0 3 0x14200 reaper reaper 7068 46623 0 0 3 0x14200 pgdaemon pagedaemon 74924 486205 0 0 3 0x14200 bored crynlk 49961 480835 0 0 3 0x14200 bored crypto 56148 126101 0 0 3 0x40014200 acpi0 acpi0 94321 477450 0 0 2 0x14200 softnet 40802 203481 0 0 2 0x14200 systqmp 1410 349971 0 0 3 0x14200 bored systq 66995 129904 0 0 3 0x40014200 bored softclock 64628 89099 0 0 3 0x40014200 idle0 75682 467225 0 0 3 0x14200 bored smr 1 434234 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 9426 6306K 6307K 78643K 10519 0 0 pcb 25 9K 9K 78643K 60 0 0 rtable 67 2K 2K 78643K 131 0 0 ifaddr 21 7K 7K 78643K 21 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 13 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1174 74K 74K 78643K 1179 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 1K 78643K 2 0 0 VM map 2 0K 0K 78643K 2 0 0 sem 2 0K 0K 78643K 2 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12537 0 0 file desc 1 0K 0K 78643K 1 0 0 proc 40 30K 38K 78643K 207 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 in_multi 11 0K 0K 78643K 11 0 0 ether_multi 1 0K 0K 78643K 1 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 18 79K 79K 78643K 18 0 0 exec 0 0K 1K 78643K 152 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 52 2K 3K 78643K 720 0 0 UVM aobj 2 2K 2K 78643K 2 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 NDP 3 0K 0K 78643K 3 0 0 temp 30 2695K 2759K 78643K 1720 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 2 0 0 1 0 1 1 0 8 0 inpcbpl 280 22 0 16 1 0 1 1 0 8 0 plimitpl 152 13 0 8 1 0 1 1 0 8 0 rtentry 112 26 0 2 1 0 1 1 0 8 0 syncache 264 5 0 5 1 0 1 1 0 8 1 tcpcb 544 8 0 5 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 102 0 0 7 0 7 7 0 8 0 art_table 32 103 0 0 1 0 1 1 0 8 0 art_node 16 25 0 3 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1385 0 16 45 0 45 45 0 8 0 ffsino 240 1385 0 16 81 0 81 81 0 8 0 nchpl 144 1558 0 30 57 0 57 57 0 8 0 uvmvnodes 72 1394 0 0 26 0 26 26 0 8 0 vnodes 200 1394 0 0 74 0 74 74 0 8 0 namei 1024 3280 0 3280 2 1 1 1 0 8 1 scxspl 192 2385 0 2385 11 9 2 7 0 8 2 sigapl 432 178 0 167 2 0 2 2 0 8 0 knotepl 112 5 0 0 1 0 1 1 0 8 0 kqueuepl 104 1 0 0 1 0 1 1 0 8 0 pipepl 112 118 0 111 2 1 1 1 0 8 0 fdescpl 424 179 0 167 2 0 2 2 0 8 0 filepl 120 821 0 777 2 0 2 2 0 8 0 lockfpl 104 6 0 6 1 1 0 1 0 8 0 lockfspl 48 3 0 3 1 1 0 1 0 8 0 sessionpl 112 17 0 9 1 0 1 1 0 8 0 pgrppl 48 17 0 9 1 0 1 1 0 8 0 ucredpl 96 47 0 40 1 0 1 1 0 8 0 zombiepl 144 167 0 167 2 1 1 1 0 8 1 processpl 840 193 0 167 4 0 4 4 0 8 0 procpl 600 193 0 167 3 0 3 3 0 8 0 sockpl 384 69 0 51 2 0 2 2 0 8 0 mcl4k 4096 10 0 10 1 0 1 1 0 8 1 mcl2k 2048 5836 0 5797 8 0 8 8 0 8 2 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9984 0 9916 7 1 6 6 0 8 1 bufpl 256 2053 0 258 113 0 113 113 0 8 0 anonpl 16 18152 0 17030 7 1 6 6 0 62 1 amapchunkpl 152 550 0 514 2 0 2 2 0 158 0 amappl16 192 73 0 67 1 0 1 1 0 8 0 amappl14 176 14 0 13 2 1 1 1 0 8 0 amappl12 160 6 0 6 1 0 1 1 0 8 1 amappl11 152 44 0 30 1 0 1 1 0 8 0 amappl10 144 46 0 46 2 1 1 1 0 8 1 amappl9 136 372 0 371 1 0 1 1 0 8 0 amappl8 128 82 0 78 1 0 1 1 0 8 0 amappl7 120 15 0 14 1 0 1 1 0 8 0 amappl6 112 43 0 38 1 0 1 1 0 8 0 amappl5 104 139 0 129 1 0 1 1 0 8 0 amappl4 96 310 0 291 1 0 1 1 0 8 0 amappl3 88 153 0 143 1 0 1 1 0 8 0 amappl2 80 727 0 677 3 1 2 2 0 8 0 amappl1 72 11619 0 11239 14 5 9 14 0 8 0 amappl 80 387 0 367 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 1 0 0 1 0 1 1 0 8 0 uaddrrnd 24 179 0 167 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 179 0 167 1 0 1 1 0 8 0 vmmpekpl 168 5297 0 5283 1 0 1 1 0 8 0 vmmpepl 168 25155 0 24421 49 14 35 44 0 357 1 vmsppl 264 178 0 167 1 0 1 1 0 8 0 pdppl 4096 364 0 334 5 0 5 5 0 8 0 pvpl 32 72144 0 69381 31 5 26 26 0 265 3 pmappl 200 178 0 167 1 0 1 1 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 231 0 4 7 0 7 7 0 8 0