panic: kernel diagnostic assertion "map->limit == rtmap_limit" failed: file "/syzkaller/managers/main/kernel/sys/net/rtable.c", line 132 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 6906 54021 -1 0x10 0x4000000 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8333ec09) at panic+0x1cf sys/kern/subr_prf.c:198 __assert(ffffffff8337ea14,ffffffff8335db9d,84,ffffffff833d3075) at __assert+0x29 sys/kern/subr_prf.c:-1 rtmap_grow(19,21) at rtmap_grow+0x1f2 rtable_add(18) at rtable_add+0x289 rtable_alloc sys/net/rtable.c:370 [inline] rtable_add(18) at rtable_add+0x289 sys/net/rtable.c:223 route_output(fffffd806189e600,ffff8000014af800) at route_output+0x564 sys/net/rtsock.c:766 route_send(ffff8000014af800,fffffd806189e600,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000014af800,0,ffff800035d314c8,0,0,400) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7ab4f0,8,ffff800035d315c0,400,ffff800035d31660) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7ab4f0,ffff800035d31710,ffff800035d31660) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800035d31710) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800035d31710) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x35479203bc0, count: 3 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 *cpu0: kernel diagnostic assertion "map->limit == rtmap_limit" failed: file "/syzkaller/managers/main/kernel/sys/net/rtable.c", line 132 ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8333ec09) at panic+0x1cf sys/kern/subr_prf.c:198 __assert(ffffffff8337ea14,ffffffff8335db9d,84,ffffffff833d3075) at __assert+0x29 sys/kern/subr_prf.c:-1 rtmap_grow(19,21) at rtmap_grow+0x1f2 rtable_add(18) at rtable_add+0x289 rtable_alloc sys/net/rtable.c:370 [inline] rtable_add(18) at rtable_add+0x289 sys/net/rtable.c:223 route_output(fffffd806189e600,ffff8000014af800) at route_output+0x564 sys/net/rtsock.c:766 route_send(ffff8000014af800,fffffd806189e600,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000014af800,0,ffff800035d314c8,0,0,400) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7ab4f0,8,ffff800035d315c0,400,ffff800035d31660) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7ab4f0,ffff800035d31710,ffff800035d31660) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800035d31710) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800035d31710) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x35479203bc0, count: -12 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff800035d310e0 rbx 0x21 rdx 0xffff8000014328c0 rcx 0 rax 0xffff80002a7ab4f0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xa7710ba0e968ef71 r11 0xa15962a6abc53c7a r12 0 r13 0x6 r14 0 r15 0x1 rip 0xffffffff8206ef85 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff800035d310d0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb> show proc PROC (syz-executor) tid=6906 pid=54021 tcnt=4 stat=onproc flags process=10 proc=4000000 runpri=81, usrpri=81, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a7aba20,0xffff80003c94a2c8 process=0xffff8000ffff8018 user=0xffff800035d2c000, vmspace=0xfffffd806ba42e70 estcpu=31, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 53292 369286 22024 0 2 0 syz-executor 53292 372988 22024 0 2 0x4000000 syz-executor 97048 33250 99037 0 2 0 syz-executor 97048 205104 99037 0 3 0x4000080 fsleep syz-executor 19821 166194 93719 0 2 0 syz-executor 19821 369951 93719 0 2 0x4000000 syz-executor 21457 450268 71154 0 2 0 syz-executor 21457 125498 71154 0 2 0x4000000 syz-executor 57321 354899 14377 0 2 0x10 syz-executor 57321 402963 14377 0 2 0x4000010 syz-executor 12454 90893 1 0 3 0x82 nanoslp getty 54021 290171 23129 -1 2 0x10 syz-executor 54021 403182 23129 -1 3 0x4000090 msgwait syz-executor *54021 6906 23129 -1 7 0x4000010 syz-executor 54021 304904 23129 -1 3 0x4000090 fsleep syz-executor 52849 108948 67301 60929 3 0x10 vmmaplk syz-executor 52849 275856 67301 60929 3 0x4000090 fsleep syz-executor 52849 466975 67301 60929 3 0x4000090 fsleep syz-executor 52849 372825 67301 60929 3 0x4000090 fsleep syz-executor 52849 314892 67301 60929 2 0x4000010 syz-executor 86756 168329 74897 0 3 0x80 nanoslp syz-executor 86756 15377 74897 0 2 0x4000000 syz-executor 86756 291158 74897 0 2 0x4000000 syz-executor 284 338063 0 0 3 0x14200 bored sosplice 74897 364750 89735 0 3 0x82 nanoslp syz-executor 93719 170855 89735 0 3 0x82 nanoslp syz-executor 22024 309325 89735 0 3 0x82 nanoslp syz-executor 14377 27049 89735 0 2 0xc82 syz-executor 99037 62969 89735 0 3 0x82 nanoslp syz-executor 23129 232999 89735 0 2 0xc82 syz-executor 71154 465346 89735 0 2 0xc82 syz-executor 67301 61291 89735 0 3 0x82 nanoslp syz-executor 89735 226900 37297 0 3 0x82 kqread syz-executor 37297 193364 26649 0 3 0x10008a sigsusp ksh 26649 40350 23922 0 3 0x98 kqread sshd-session 23922 278087 774 0 3 0x92 kqread sshd-session 774 147987 1 0 3 0x88 kqread sshd 61099 119881 27936 73 3 0x1100090 kqread syslogd 27936 335000 1 0 3 0x100082 sbwait syslogd 76771 196121 1 0 3 0x100080 kqread resolvd 34324 401593 47870 77 3 0x100092 kqread dhcpleased 10400 441004 47870 77 3 0x100092 kqread dhcpleased 47870 444387 1 0 3 0x80 kqread dhcpleased 25364 46747 0 0 3 0x14200 bored smr 43223 134712 0 0 2 0x14200 zerothread 12145 361873 0 0 3 0x14200 aiodoned aiodoned 76706 250015 0 0 3 0x14200 syncer update 19076 136704 0 0 3 0x14200 cleaner cleaner 45679 298944 0 0 3 0x14200 reaper reaper 54292 314640 0 0 3 0x14200 pgdaemon pagedaemon 32336 150361 0 0 3 0x14200 bored viomb 55012 420844 0 0 3 0x40014200 acpi0 acpi0 9120 500310 0 0 3 0x14200 bored softnet0 75714 109415 0 0 3 0x14200 bored systqmp 38699 97921 0 0 3 0x14200 bored systq 72630 261825 0 0 3 0x40014200 tmoslp softclock 25384 37519 0 0 3 0x40014200 idle0 1 421078 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10181 11060K 11761K 166960K 11659 0 pcb 20 13K 14K 166960K 108 0 rtable 210 7K 7K 166960K 326 0 pf 31 13K 13K 166960K 47 0 ifaddr 44 8K 8K 166960K 58 0 ifgroup 50 2K 2K 166960K 70 0 sysctl 1 1K 9K 166960K 6 0 counters 32 17K 17K 166960K 41 0 ioctlops 0 0K 4K 166960K 124 0 iov 0 0K 28K 166960K 12 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1382 87K 87K 166960K 1560 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 5K 166960K 4 0 VM map 2 1K 1K 166960K 2 0 sem 6 1K 1K 166960K 10 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 93K 166960K 391 0 sigio 0 0K 0K 166960K 69 0 proc 63 67K 100K 166960K 516 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 48 0 in_multi 106 7K 7K 166960K 119 0 ether_multi 1 0K 0K 166960K 2 0 mrt 0 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 91 413K 413K 166960K 91 0 exec 0 0K 2K 166960K 384 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 245 152K 168K 166960K 5177 0 UVM aobj 11 2K 2K 166960K 13 0 pinsyscall 39 78K 94K 166960K 1427 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 2 0K 0K 166960K 15 0 NDP 11 0K 2K 166960K 35 0 temp 46 8640K 8704K 166960K 4927 0 kqueue 18 28K 28K 166960K 79 0 SYN cache 2 16K 16K 166960K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 57 0 51 1 0 1 1 0 8 0 rtentry 136 110 0 21 4 0 4 4 0 8 0 unpcb 144 394 0 377 6 4 2 6 0 8 1 syncache 336 4 0 4 2 1 1 1 0 8 1 tcpcb 736 90 0 86 1 0 1 1 0 8 0 arp 96 14 0 1 1 0 1 1 0 8 0 inpcb 328 287 0 274 5 3 2 5 0 8 0 ip6q 72 2 0 2 1 0 1 1 0 8 1 ip6af 40 4 0 4 1 0 1 1 0 8 1 nd6 112 20 0 2 1 0 1 1 0 8 0 pkpcb 40 2 0 2 2 1 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 7 0 7 2 1 1 1 0 8 1 pppxif 1384 1 0 1 1 1 0 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 128 4 0 2 1 0 1 1 0 8 0 pfstate 384 2 0 1 1 0 1 1 0 8 0 pfrule 1344 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 503 0 72 31 0 31 31 0 8 1 art_table 40 504 0 72 5 0 5 5 0 8 0 art_node 32 110 0 31 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 0 1 0 1 1 0 8 0 semapl 112 5 0 1 1 0 1 1 0 8 0 shmpl 112 10 0 2 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 2050 0 543 95 0 95 95 0 8 0 ffsino 256 2050 0 543 95 0 95 95 0 8 0 nchpl 144 2590 0 903 63 0 63 63 0 8 0 uvmvnodes 80 2228 0 0 46 0 46 46 0 8 0 vnodes 216 2228 0 0 124 0 124 124 0 8 0 namei 1024 8531 0 8529 2 1 1 2 0 8 0 kstatmem 264 36 0 14 2 0 2 2 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scxspl 216 8727 0 8727 8 7 1 8 1 8 1 plimitpl 152 140 0 123 1 0 1 1 0 8 0 sigapl 424 672 0 628 6 0 6 6 0 8 0 knotepl 120 13046 0 12996 17 8 9 10 0 8 7 kqueuepl 184 127 0 114 3 2 1 3 0 8 0 pipepl 304 216 0 189 8 0 8 8 0 8 5 fdescpl 448 656 0 626 5 1 4 5 0 8 0 filepl 120 3717 0 3486 16 5 11 13 0 8 3 lockfpl 104 145 0 141 2 1 1 2 0 8 0 lockfspl 48 72 0 68 1 0 1 1 0 8 0 sessionpl 144 21 0 14 1 0 1 1 0 8 0 pgrppl 48 34 0 19 1 0 1 1 0 8 0 ucredpl 104 473 0 458 1 0 1 1 0 8 0 zombiepl 144 754 0 754 1 0 1 1 0 8 1 processpl 1152 672 0 628 4 0 4 4 0 8 0 procpl 664 1137 0 1078 7 1 6 6 0 8 1 sosppl 168 4 0 4 1 1 0 1 0 8 0 sockpl 552 747 0 711 12 8 4 12 0 8 1 mcl64k 65536 23 0 23 2 1 1 1 0 8 1 mcl16k 16384 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 7 0 7 2 1 1 1 0 8 1 mcl4k 4096 2803 0 2753 14 6 8 13 0 8 1 mcl2k2 2112 1 0 1 1 0 1 1 0 8 1 mcl2k 2048 564 0 560 3 2 1 3 0 8 0 mtagpl 96 5 0 5 2 1 1 1 0 8 1 mbufpl 256 6598 0 6392 14 0 14 14 0 8 0 bufpl 280 3382 0 121 233 0 233 233 0 8 0 anonpl 24 119555 0 115977 44 12 32 33 0 187 10 amapchunkpl 152 16522 0 15998 38 4 34 34 0 158 13 amappl16 200 2061 0 2012 6 3 3 5 0 8 0 amappl15 192 6 0 5 1 0 1 1 0 8 0 amappl14 184 107 0 97 1 0 1 1 0 8 0 amappl13 176 1 0 1 1 1 0 1 0 8 0 amappl12 168 1267 0 1237 3 1 2 3 0 8 0 amappl11 160 47 0 37 1 0 1 1 0 8 0 amappl10 152 7 0 7 1 1 0 1 0 8 0 amappl9 144 270 0 270 1 1 0 1 0 8 0 amappl8 136 48 0 47 1 0 1 1 0 8 0 amappl7 128 131 0 120 1 0 1 1 0 8 0 amappl6 120 203 0 200 1 0 1 1 0 8 0 amappl5 112 123 0 116 1 0 1 1 0 8 0 amappl4 104 282 0 267 1 0 1 1 0 8 0 amappl3 96 2668 0 2566 3 0 3 3 0 8 0 amappl2 88 875 0 802 2 0 2 2 0 8 0 amappl1 80 8985 0 8433 13 1 12 13 0 8 0 amappl 88 4493 0 4315 5 0 5 5 0 92 1 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 254 0 254 1 1 0 1 0 8 0 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 12 0 2 1 0 1 1 0 8 0 uaddrrnd 24 656 0 626 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 656 0 626 1 0 1 1 0 8 0 vmmpekpl 168 6949 0 6912 4 1 3 3 0 8 0 vmmpepl 168 47140 0 45204 85 0 85 85 0 357 0 vmsppl 368 655 0 626 4 1 3 4 0 8 0 rwobjpl 40 17185 0 14062 32 0 32 32 0 8 0 pdppl 4096 1319 0 1252 105 38 67 81 0 8 0 pvpl 32 297405 0 287371 117 20 97 97 0 265 16 pmappl 216 655 0 626 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 383 0 54 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8333ec09) at panic+0x1cf sys/kern/subr_prf.c:198 __assert(ffffffff8337ea14,ffffffff8335db9d,84,ffffffff833d3075) at __assert+0x29 sys/kern/subr_prf.c:-1 rtmap_grow(19,21) at rtmap_grow+0x1f2 rtable_add(18) at rtable_add+0x289 rtable_alloc sys/net/rtable.c:370 [inline] rtable_add(18) at rtable_add+0x289 sys/net/rtable.c:223 route_output(fffffd806189e600,ffff8000014af800) at route_output+0x564 sys/net/rtsock.c:766 route_send(ffff8000014af800,fffffd806189e600,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000014af800,0,ffff800035d314c8,0,0,400) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7ab4f0,8,ffff800035d315c0,400,ffff800035d31660) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7ab4f0,ffff800035d31710,ffff800035d31660) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800035d31710) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800035d31710) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x35479203bc0, count: -12 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8333ec09) at panic+0x1cf sys/kern/subr_prf.c:198 __assert(ffffffff8337ea14,ffffffff8335db9d,84,ffffffff833d3075) at __assert+0x29 sys/kern/subr_prf.c:-1 rtmap_grow(19,21) at rtmap_grow+0x1f2 rtable_add(18) at rtable_add+0x289 rtable_alloc sys/net/rtable.c:370 [inline] rtable_add(18) at rtable_add+0x289 sys/net/rtable.c:223 route_output(fffffd806189e600,ffff8000014af800) at route_output+0x564 sys/net/rtsock.c:766 route_send(ffff8000014af800,fffffd806189e600,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000014af800,0,ffff800035d314c8,0,0,400) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7ab4f0,8,ffff800035d315c0,400,ffff800035d31660) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7ab4f0,ffff800035d31710,ffff800035d31660) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800035d31710) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800035d31710) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x35479203bc0, count: -12