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 * 13685 56133 0 0 0x4000000 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83410b7f) at panic+0x1cf sys/kern/subr_prf.c:198 __assert(ffffffff834514ae,ffffffff8342e143,84,ffffffff834a1e1d) at __assert+0x29 sys/kern/subr_prf.c:-1 rtmap_grow(b5,21) at rtmap_grow+0x1f2 rtable_add(b4) at rtable_add+0x289 rtable_alloc sys/net/rtable.c:370 [inline] rtable_add(b4) at rtable_add+0x289 sys/net/rtable.c:223 if_createrdomain(b4,ffff8000015d8000) at if_createrdomain+0x40 sys/net/if.c:2046 ifioctl(ffff800001665408,8020699f,ffff80003c921510,ffff8000380eb780) at ifioctl+0x1be2 sys/net/if.c:2395 sys_ioctl(ffff8000380eb780,ffff80003c9216e0,ffff80003c921630) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1 syscall(ffff80003c9216e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9216e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ef85a688b0, count: 5 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(ffffffff83410b7f) at panic+0x1cf sys/kern/subr_prf.c:198 __assert(ffffffff834514ae,ffffffff8342e143,84,ffffffff834a1e1d) at __assert+0x29 sys/kern/subr_prf.c:-1 rtmap_grow(b5,21) at rtmap_grow+0x1f2 rtable_add(b4) at rtable_add+0x289 rtable_alloc sys/net/rtable.c:370 [inline] rtable_add(b4) at rtable_add+0x289 sys/net/rtable.c:223 if_createrdomain(b4,ffff8000015d8000) at if_createrdomain+0x40 sys/net/if.c:2046 ifioctl(ffff800001665408,8020699f,ffff80003c921510,ffff8000380eb780) at ifioctl+0x1be2 sys/net/if.c:2395 sys_ioctl(ffff8000380eb780,ffff80003c9216e0,ffff80003c921630) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1 syscall(ffff80003c9216e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9216e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ef85a688b0, count: -10 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80003c921240 rbx 0x21 rdx 0 rcx 0 rax 0xffff8000380eb780 r8 0x101010101010101 r9 0x8080808080808080 r10 0xeb5e40b399b0355b r11 0x1514289bebffc601 r12 0 r13 0x19 r14 0 r15 0x1 rip 0xffffffff82bd74e5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c921230 ss 0 db_enter+0x25: addq $0x8,%rsp ddb> show proc PROC (syz-executor) tid=13685 pid=56133 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=79, usrpri=79, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000380eb250,0xffff8000380ead30 process=0xffff8000338d6898 user=0xffff80003c91c000, vmspace=0xfffffd806cce8d00 estcpu=29, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 75923 337669 16825 0 2 0 syz-executor 75923 392386 16825 0 3 0x4000080 fsleep syz-executor 35826 85416 13996 0 2 0 syz-executor 35826 479816 13996 0 3 0x4000080 fsleep syz-executor 35826 278626 13996 0 2 0x4000000 syz-executor 56733 510139 0 0 3 0x14200 acct acct 56133 206944 97369 0 2 0 syz-executor 56133 386717 97369 0 2 0x4000000 syz-executor *56133 13685 97369 0 7 0x4000000 syz-executor 75782 105236 13104 0 2 0xc80 syz-executor 75782 395096 13104 0 3 0x4000080 fsleep syz-executor 75782 369581 13104 0 3 0x4000080 fsleep syz-executor 20373 491775 70960 0 3 0x3000 suspend syz-executor 20373 77637 70960 0 2 0x4081000 syz-executor 86701 229099 54875 0 2 0 syz-executor 86701 471078 54875 0 3 0x4000080 fsleep syz-executor 86701 331410 54875 0 3 0x4000080 fsleep syz-executor 86701 125513 54875 0 3 0x4000080 fsleep syz-executor 86701 68273 54875 0 3 0x4000080 fsleep syz-executor 86701 483725 54875 0 3 0x4000080 fsleep syz-executor 86701 306240 54875 0 3 0x4000080 fsleep syz-executor 97369 101645 47435 0 3 0x82 nanoslp syz-executor 16825 492730 47435 0 2 0xc82 syz-executor 96148 222918 47435 0 2 0x2 syz-executor 95687 262036 47435 0 3 0x82 wait syz-executor 70960 134310 47435 0 3 0x82 nanoslp syz-executor 13996 11642 47435 0 2 0xc82 syz-executor 54875 438864 47435 0 2 0xc82 syz-executor 13104 223208 47435 0 2 0xc82 syz-executor 47435 81132 20760 0 3 0x82 kqread syz-executor 20760 66863 24339 0 3 0x10008a sigsusp ksh 24339 39310 94900 0 3 0x98 kqread sshd-session 94900 4806 79055 0 3 0x92 kqread sshd-session 45467 192382 1 0 3 0x100083 ttyin getty 79055 219368 1 0 3 0x88 kqread sshd 95367 15755 89029 73 3 0x1100090 kqread syslogd 89029 177514 1 0 3 0x100082 sbwait syslogd 26069 284773 1 0 3 0x100080 kqread resolvd 67794 168659 26819 77 3 0x100092 kqread dhcpleased 90466 495287 26819 77 3 0x100092 kqread dhcpleased 26819 471031 1 0 3 0x80 kqread dhcpleased 86164 512155 0 0 3 0x14200 bored smr 39413 58453 0 0 2 0x14200 zerothread 85621 496608 0 0 3 0x14200 aiodoned aiodoned 69905 329241 0 0 3 0x14200 syncer update 6131 501438 0 0 3 0x14200 cleaner cleaner 27166 170645 0 0 3 0x14200 reaper reaper 14272 429026 0 0 3 0x14200 pgdaemon pagedaemon 92044 250156 0 0 3 0x14200 bored viomb 23285 34940 0 0 3 0x40014200 acpi0 acpi0 37861 122480 0 0 3 0x14200 bored softnet0 1687 287039 0 0 3 0x14200 bored systqmp 18541 293463 0 0 3 0x14200 bored systq 22354 122415 0 0 3 0x40014200 tmoslp softclock 60296 415389 0 0 3 0x40014200 idle0 1 384640 0 0 3 0x82 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 11054 12256K 13042K 166960K 13351 0 pcb 18 15K 16K 166960K 153 0 rtable 244 15K 15K 166960K 493 0 pf 35 14K 16K 166960K 105 0 ifaddr 39 6K 7K 166960K 83 0 ifgroup 50 2K 2K 166960K 124 0 sysctl 4 1K 9K 166960K 13 0 counters 36 18K 18K 166960K 86 0 ioctlops 0 0K 4K 166960K 287 0 iov 0 0K 16K 166960K 85 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1430 90K 90K 166960K 2221 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 13 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 29 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 240K 166960K 713 0 sigio 0 0K 0K 166960K 4 0 proc 60 59K 75K 166960K 575 0 subproc 72 4K 4K 166960K 81 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 187 0 in_multi 83 6K 7K 166960K 128 0 ether_multi 1 0K 0K 166960K 6 0 mrt 0 0K 0K 166960K 19 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 73 334K 334K 166960K 73 0 exec 0 0K 1K 166960K 440 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 231 151K 169K 166960K 7901 0 UVM aobj 8 2K 4K 166960K 11 0 pinsyscall 38 76K 90K 166960K 1827 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 33 0 NDP 12 0K 2K 166960K 56 0 temp 80 9082K 9148K 166960K 16511 0 kqueue 16 26K 32K 166960K 163 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 84 0 81 1 0 1 1 0 8 0 rtentry 136 138 0 41 4 0 4 4 0 8 0 unpcb 144 769 0 752 6 5 1 6 0 8 0 syncache 336 5 0 5 1 1 0 1 0 8 0 tcpqe 32 2 0 2 1 1 0 1 0 8 0 tcpcb 736 509 0 503 15 13 2 13 0 8 1 arp 96 22 0 7 1 0 1 1 0 8 0 ipq 40 3 0 3 2 1 1 1 0 8 1 ipqe 40 6 0 6 2 1 1 1 0 8 1 inpcb 328 836 0 826 12 10 2 12 0 8 0 ip6q 72 21 0 16 1 0 1 1 0 8 0 ip6af 40 37 0 32 1 0 1 1 0 8 0 nd6 112 30 0 10 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 1 0 1 0 8 0 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1072 46 0 42 1 0 1 1 0 8 0 pppxif 1416 4 0 4 1 0 1 1 0 8 1 pftag 88 1 0 0 1 0 1 1 0 8 0 pfqueue 320 1 0 0 1 0 1 1 0 8 0 pfstitem 24 1 0 0 1 0 1 1 0 8 0 pfstkey 128 1 0 0 1 0 1 1 0 8 0 pfstate 384 1 0 0 1 0 1 1 0 8 0 pfrule 1360 3 0 3 1 1 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 558 0 156 29 2 27 29 0 8 0 art_table 40 560 0 156 5 0 5 5 0 8 0 art_node 32 137 0 50 1 0 1 1 0 8 0 sysvmsgpl 40 39 0 36 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 25 0 15 1 0 1 1 0 8 0 shmpl 112 8 0 3 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 2835 0 1375 92 0 92 92 0 8 0 ffsino 256 2835 0 1375 92 0 92 92 0 8 0 nchpl 144 3846 0 2142 64 0 64 64 0 8 0 rtmask 32 15 0 13 2 1 1 1 0 8 0 vnodes 216 2430 0 0 135 0 135 135 0 8 0 namei 1024 13545 0 13544 2 1 1 1 0 8 0 kstatmem 264 76 0 52 2 0 2 2 0 8 0 scsiplug 72 3 0 3 2 1 1 1 0 8 1 scxspl 216 13589 0 13589 8 7 1 8 1 8 1 plimitpl 152 210 0 192 1 0 1 1 0 8 0 sigapl 424 996 0 953 6 0 6 6 0 8 0 knotepl 120 26615 0 26512 29 20 9 16 0 8 5 kqueuepl 184 487 0 473 5 2 3 4 0 8 2 pipepl 304 159 0 131 3 0 3 3 0 8 0 fdescpl 448 979 0 950 4 0 4 4 0 8 0 filepl 120 7220 0 7000 18 7 11 17 0 8 2 lockfpl 104 396 0 393 2 0 2 2 0 8 1 lockfspl 48 124 0 121 1 0 1 1 0 8 0 sessionpl 144 99 0 91 1 0 1 1 0 8 0 pgrppl 48 111 0 95 1 0 1 1 0 8 0 ucredpl 104 1450 0 1439 1 0 1 1 0 8 0 zombiepl 144 984 0 982 1 0 1 1 0 8 0 processpl 1152 996 0 953 4 0 4 4 0 8 0 procpl 664 1864 0 1807 6 1 5 6 0 8 0 sosppl 176 1 0 1 1 1 0 1 0 8 0 sockpl 552 1710 0 1680 26 23 3 20 0 8 0 mcl64k 65536 54 0 53 1 0 1 1 0 8 0 mcl16k 16384 1 0 1 1 1 0 1 0 8 0 mcl12k 12288 2 0 2 1 1 0 1 0 8 0 mcl8k 8192 16 0 16 2 1 1 1 0 8 1 mcl4k 4096 3295 0 3244 14 6 8 14 0 8 1 mcl2k2 2112 3 0 3 1 1 0 1 0 8 0 mcl2k 2048 865 0 858 3 1 2 2 0 8 1 mtagpl 96 29 0 7 1 0 1 1 0 8 0 mbufpl 256 10422 0 10225 18 5 13 18 0 8 0 bufpl 280 4513 0 103 315 0 315 315 0 8 0 anonpl 24 155455 0 151570 34 7 27 34 0 187 0 amapchunkpl 152 38624 0 38125 35 13 22 35 0 158 0 amappl16 200 2771 0 2701 7 2 5 6 0 8 1 amappl15 192 6 0 6 1 1 0 1 0 8 0 amappl14 184 423 0 422 1 0 1 1 0 8 0 amappl13 176 119 0 109 1 0 1 1 0 8 0 amappl12 168 1218 0 1190 2 0 2 2 0 8 0 amappl11 160 4 0 4 1 1 0 1 0 8 0 amappl10 152 84 0 74 1 0 1 1 0 8 0 amappl9 144 257 0 257 1 1 0 1 0 8 0 amappl8 136 106 0 105 1 0 1 1 0 8 0 amappl7 128 149 0 136 1 0 1 1 0 8 0 amappl6 120 165 0 164 1 0 1 1 0 8 0 amappl5 112 97 0 88 1 0 1 1 0 8 0 amappl4 104 289 0 273 1 0 1 1 0 8 0 amappl3 96 5100 0 4987 4 0 4 4 0 8 0 amappl2 88 564 0 508 2 0 2 2 0 8 0 amappl1 80 12349 0 11809 15 1 14 15 0 8 1 amappl 88 7097 0 6928 5 0 5 5 0 92 0 uvmvnodes 80 115 0 0 3 0 3 3 0 8 0 dma65536 65536 1 0 1 1 1 0 1 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma2048 2048 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 7 0 7 2 1 1 1 0 8 1 dma128 128 255 0 255 2 1 1 1 0 8 1 dma64 64 7 0 7 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 20 0 19 1 0 1 1 0 8 0 aobjpl 72 10 0 3 1 0 1 1 0 8 0 uaddrrnd 24 979 0 950 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 979 0 950 1 0 1 1 0 8 0 vmmpekpl 168 9344 0 9306 2 0 2 2 0 8 0 vmmpepl 168 69317 0 67455 92 6 86 92 0 357 2 vmsppl 368 978 0 950 4 1 3 4 0 8 0 rwobjpl 40 20777 0 19754 12 0 12 12 0 8 0 pdppl 4096 1964 0 1900 92 26 66 74 0 8 2 pvpl 32 426373 0 417183 100 13 87 100 0 265 2 pmappl 216 978 0 950 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 382 0 63 11 0 11 11 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(ffffffff83410b7f) at panic+0x1cf sys/kern/subr_prf.c:198 __assert(ffffffff834514ae,ffffffff8342e143,84,ffffffff834a1e1d) at __assert+0x29 sys/kern/subr_prf.c:-1 rtmap_grow(b5,21) at rtmap_grow+0x1f2 rtable_add(b4) at rtable_add+0x289 rtable_alloc sys/net/rtable.c:370 [inline] rtable_add(b4) at rtable_add+0x289 sys/net/rtable.c:223 if_createrdomain(b4,ffff8000015d8000) at if_createrdomain+0x40 sys/net/if.c:2046 ifioctl(ffff800001665408,8020699f,ffff80003c921510,ffff8000380eb780) at ifioctl+0x1be2 sys/net/if.c:2395 sys_ioctl(ffff8000380eb780,ffff80003c9216e0,ffff80003c921630) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1 syscall(ffff80003c9216e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9216e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ef85a688b0, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83410b7f) at panic+0x1cf sys/kern/subr_prf.c:198 __assert(ffffffff834514ae,ffffffff8342e143,84,ffffffff834a1e1d) at __assert+0x29 sys/kern/subr_prf.c:-1 rtmap_grow(b5,21) at rtmap_grow+0x1f2 rtable_add(b4) at rtable_add+0x289 rtable_alloc sys/net/rtable.c:370 [inline] rtable_add(b4) at rtable_add+0x289 sys/net/rtable.c:223 if_createrdomain(b4,ffff8000015d8000) at if_createrdomain+0x40 sys/net/if.c:2046 ifioctl(ffff800001665408,8020699f,ffff80003c921510,ffff8000380eb780) at ifioctl+0x1be2 sys/net/if.c:2395 sys_ioctl(ffff8000380eb780,ffff80003c9216e0,ffff80003c921630) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1 syscall(ffff80003c9216e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9216e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ef85a688b0, count: -10