login: panic: kernel diagnostic assertion "map->limit == rtmap_limit" failed: file "/syzkaller/managers/main/kernel/sys/net/rtable.c", line 131 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *170420 84612 0 0 0x4000000 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830ae47c) at panic+0x1cf sys/kern/subr_prf.c:198 __assert(ffffffff830685da,ffffffff830382e1,83,ffffffff830a8bd8) at __assert+0x29 rtmap_grow(17,21) at rtmap_grow+0x1f3 sys/net/rtable.c:131 rtable_add(16) at rtable_add+0x279 if_createrdomain(16,ffff80000155e800) at if_createrdomain+0x40 sys/net/if.c:1947 ifioctl(fffffd806d19d600,8020699f,ffff80003748dc30,ffff80002a49cce0) at ifioctl+0x19be sys/net/if.c:2296 sys_ioctl(ffff80002a49cce0,ffff80003748de10,ffff80003748dd60) at sys_ioctl+0x678 syscall(ffff80003748de10) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc2dddc8b650, 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 131 ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830ae47c) at panic+0x1cf sys/kern/subr_prf.c:198 __assert(ffffffff830685da,ffffffff830382e1,83,ffffffff830a8bd8) at __assert+0x29 rtmap_grow(17,21) at rtmap_grow+0x1f3 sys/net/rtable.c:131 rtable_add(16) at rtable_add+0x279 if_createrdomain(16,ffff80000155e800) at if_createrdomain+0x40 sys/net/if.c:1947 ifioctl(fffffd806d19d600,8020699f,ffff80003748dc30,ffff80002a49cce0) at ifioctl+0x19be sys/net/if.c:2296 sys_ioctl(ffff80002a49cce0,ffff80003748de10,ffff80003748dd60) at sys_ioctl+0x678 syscall(ffff80003748de10) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc2dddc8b650, count: -10 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80003748d960 rbx 0x21 rdx 0 rcx 0 rax 0xffff80002a49cce0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x99ff57615a44d517 r11 0x1d2c356edbd5cbf7 r12 0 r13 0xf r14 0 r15 0x1 rip 0xffffffff822487f5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003748d950 ss 0 db_enter+0x25: addq $0x8,%rsp ddb> show proc PROC (syz-executor) tid=170420 pid=84612 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=81, usrpri=82, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a49ca58,0xffff80002a49c558 process=0xffff8000ffff48a8 user=0xffff800037488000, vmspace=0xfffffd806f14a568 estcpu=32, cpticks=1, pctcpu=0.1, user=0, sys=2, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 69088 28056 13456 0 2 0 syz-executor 69088 246956 13456 0 2 0x4000000 syz-executor 71197 336902 87820 0 2 0 syz-executor 71197 116786 87820 0 2 0x4000000 syz-executor 61780 91640 70904 0 2 0x2 arp 70904 66134 13133 0 3 0x10008a sigsusp sh 41518 276809 79460 60928 2 0x10 syz-executor 41518 382031 79460 60928 2 0x4000010 syz-executor 82689 14108 10429 0 2 0 syz-executor 82689 453741 10429 0 2 0x4000000 syz-executor 87925 387316 28814 0 3 0 futex syz-executor 87925 361234 28814 0 2 0x4000000 syz-executor 84612 128846 54159 0 2 0 syz-executor 84612 505231 54159 0 2 0x4000000 syz-executor *84612 170420 54159 0 7 0x4000000 syz-executor 9890 7387 28742 0 3 0x82000 futex syz-executor 9890 294458 28742 0 3 0x4002000 suspend syz-executor 9890 139554 28742 0 2 0x4082000 syz-executor 13133 500242 24656 0 3 0x82 wait syz-executor 13045 494547 1 0 3 0x100083 ttyin getty 87820 72335 24656 0 3 0x82 nanoslp syz-executor 13456 30557 24656 0 3 0x82 nanoslp syz-executor 79460 356478 24656 0 3 0x82 nanoslp syz-executor 10429 521422 24656 0 3 0x82 nanoslp syz-executor 28814 208340 24656 0 3 0x82 nanoslp syz-executor 28742 484742 24656 0 3 0x82 nanoslp syz-executor 54159 503271 24656 0 3 0x82 nanoslp syz-executor 94199 144361 0 0 3 0x14280 nfsidl nfsio 42541 183722 0 0 3 0x14280 nfsidl nfsio 35881 111989 0 0 3 0x14280 nfsidl nfsio 96533 215062 0 0 3 0x14280 nfsidl nfsio 12641 27876 0 0 3 0x14280 nfsidl nfsio 50894 147267 0 0 3 0x14280 nfsidl nfsio 56324 457248 0 0 3 0x14280 nfsidl nfsio 6020 217447 0 0 3 0x14280 nfsidl nfsio 92400 145607 0 0 3 0x14280 nfsidl nfsio 17487 181162 0 0 3 0x14280 nfsidl nfsio 75630 271507 0 0 3 0x14280 nfsidl nfsio 15357 404468 0 0 3 0x14280 nfsidl nfsio 91138 380778 0 0 3 0x14280 nfsidl nfsio 47308 165845 0 0 3 0x14280 nfsidl nfsio 89306 252414 0 0 3 0x14280 nfsidl nfsio 2524 178853 0 0 3 0x14280 nfsidl nfsio 65048 470887 0 0 3 0x14280 nfsidl nfsio 54035 423929 0 0 3 0x14280 nfsidl nfsio 92662 363675 0 0 3 0x14280 nfsidl nfsio 62509 319055 0 0 3 0x14280 nfsidl nfsio 74549 339530 0 0 3 0x14200 bored sosplice 24656 348597 76439 0 2 0x2 syz-executor 76439 255830 7298 0 3 0x10008a sigsusp ksh 7298 25169 98795 0 3 0x98 kqread sshd-session 98795 391927 36574 0 3 0x92 kqread sshd-session 36574 387197 1 0 3 0x88 kqread sshd 64231 132309 26280 73 3 0x1100090 kqread syslogd 26280 216953 1 0 3 0x100082 sbwait syslogd 40208 132273 1 0 3 0x100080 kqread resolvd 80743 475303 11853 77 3 0x100092 kqread dhcpleased 41238 414853 11853 77 3 0x100092 kqread dhcpleased 11853 17817 1 0 3 0x80 kqread dhcpleased 89833 197933 0 0 3 0x14200 bored smr 73719 159540 0 0 2 0x14200 zerothread 40455 70488 0 0 3 0x14200 aiodoned aiodoned 58313 201298 0 0 3 0x14200 syncer update 85557 85563 0 0 3 0x14200 cleaner cleaner 44826 261691 0 0 3 0x14200 reaper reaper 65971 204722 0 0 3 0x14200 pgdaemon pagedaemon 1560 122589 0 0 3 0x14200 bored viomb 97036 499030 0 0 3 0x40014200 acpi0 acpi0 83075 179246 0 0 3 0x14200 bored softnet3 59702 223514 0 0 3 0x14200 bored softnet2 79051 27663 0 0 3 0x14200 bored softnet1 45196 37098 0 0 3 0x14200 bored softnet0 65384 383594 0 0 3 0x14200 bored systqmp 66945 517377 0 0 3 0x14200 bored systq 35506 169461 0 0 2 0x40014200 softclock 6913 124866 0 0 3 0x40014200 idle0 1 18623 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 devbuf 10183 14120K 14442K 166960K 12326 0 pcb 17 14K 16K 166960K 213 0 rtable 201 6K 7K 166960K 974 0 pf 31 13K 15K 166960K 85 0 ifaddr 38 6K 7K 166960K 129 0 ifgroup 50 2K 2K 166960K 146 0 sysctl 3 0K 0K 166960K 5 0 counters 30 17K 17K 166960K 55 0 ioctlops 0 0K 4K 166960K 157 0 iov 0 0K 20K 166960K 58 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1419 89K 90K 166960K 2518 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 17 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 17 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1690 195K 286K 166960K 12418 0 file desc 19 69K 97K 166960K 1194 0 sigio 0 0K 0K 166960K 20 0 proc 63 67K 124K 166960K 1075 0 subproc 104 6K 6K 166960K 338 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 172 0 in_multi 78 5K 7K 166960K 320 0 ether_multi 1 0K 0K 166960K 5 0 mrt 1 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 85 387K 387K 166960K 85 0 exec 0 0K 1K 166960K 811 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 228 72K 93K 166960K 11801 0 UVM aobj 90 3K 3K 166960K 91 0 pinsyscall 41 82K 98K 166960K 2708 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 43 0 NDP 11 0K 2K 166960K 86 0 temp 59 6811K 6879K 166960K 21852 0 kqueue 13 20K 28K 166960K 172 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 120 129 0 126 1 0 1 1 0 8 0 rtentry 112 326 0 237 4 0 4 4 0 8 1 unpcb 144 949 0 933 10 6 4 7 0 8 3 syncache 336 7 0 7 2 1 1 1 0 8 1 tcpqe 32 1 0 1 1 0 1 1 0 8 1 tcpcb 808 330 0 326 12 7 5 8 0 8 4 arp 88 57 0 41 1 0 1 1 0 8 0 ipq 40 7 0 4 1 0 1 1 0 8 0 ipqe 40 88 0 84 1 0 1 1 0 8 0 inpcb 336 1281 0 1273 15 8 7 10 0 8 6 nd6 104 77 0 59 1 0 1 1 0 8 0 pkpcb 40 3 0 3 2 1 1 1 0 8 1 kcovpl 48 26 0 18 1 0 1 1 0 8 0 ppxss 1072 4 0 4 2 1 1 1 0 8 1 pfstkey 128 2 0 2 1 1 0 1 0 8 0 pfstate 344 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 1279 0 912 31 2 29 29 0 8 3 art_table 32 1282 0 912 4 0 4 4 0 8 0 art_node 16 323 0 246 1 0 1 1 0 8 0 sysvmsgpl 40 10 0 3 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 15 0 5 1 0 1 1 0 8 0 shmpl 112 89 0 1 3 0 3 3 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 3254 0 1732 96 0 96 96 0 8 0 ffsino 240 3254 0 1732 90 0 90 90 0 8 0 nchpl 144 4661 0 2964 64 0 64 64 0 8 0 uvmvnodes 80 4040 0 0 83 0 83 83 0 8 0 vnodes 216 4040 0 0 225 0 225 225 0 8 0 namei 1024 17923 0 17922 3 1 2 2 0 8 1 kstatmem 264 72 0 50 2 0 2 2 0 8 0 scsiplug 72 2 0 2 2 1 1 1 0 8 1 scxspl 216 27324 0 27324 10 2 8 8 1 8 8 plimitpl 152 364 0 348 1 0 1 1 0 8 0 sigapl 424 1466 0 1398 9 1 8 8 0 8 0 futexpl 64 13403 0 13402 1 0 1 1 0 8 0 knotepl 120 38140 0 38092 24 14 10 16 0 8 7 kqueuepl 184 375 0 364 6 2 4 4 0 8 3 pipepl 288 320 0 292 8 1 7 7 0 8 4 fdescpl 432 1429 0 1398 5 1 4 5 0 8 0 filepl 120 9336 0 9094 20 5 15 15 0 8 7 lockfpl 104 561 0 559 2 0 2 2 0 8 1 lockfspl 48 247 0 245 1 0 1 1 0 8 0 sessionpl 144 46 0 38 1 0 1 1 0 8 0 pgrppl 48 85 0 69 1 0 1 1 0 8 0 ucredpl 104 1850 0 1838 1 0 1 1 0 8 0 zombiepl 144 1771 0 1771 2 1 1 1 0 8 1 processpl 1096 1466 0 1398 5 0 5 5 0 8 0 procpl 648 2827 0 2750 8 0 8 8 0 8 1 sosppl 168 6 0 6 2 1 1 1 0 8 1 sockpl 504 2379 0 2352 38 26 12 23 0 8 8 mcl64k 65536 17 0 17 2 1 1 1 0 8 1 mcl16k 16384 3 0 3 1 0 1 1 0 8 1 mcl12k 12288 2 0 2 1 0 1 1 0 8 1 mcl9k 9216 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 15 0 15 2 1 1 1 0 8 1 mcl4k 4096 4 0 4 2 1 1 1 0 8 1 mcl2k2 2112 1 0 1 1 0 1 1 0 8 1 mcl2k 2048 7380 0 7286 27 12 15 25 0 8 1 mtagpl 96 28 0 25 1 0 1 1 0 8 0 mbufpl 256 16894 0 16682 24 2 22 24 0 8 5 bufpl 280 8031 0 1783 447 0 447 447 0 8 0 anonpl 24 274854 0 271069 79 28 51 51 0 187 25 amapchunkpl 152 39513 0 39017 45 8 37 37 0 158 15 amappl16 200 6180 0 6147 28 19 9 15 0 8 7 amappl15 192 12 0 12 1 1 0 1 0 8 0 amappl14 184 160 0 149 1 0 1 1 0 8 0 amappl13 176 6 0 6 1 1 0 1 0 8 0 amappl12 168 2344 0 2313 3 1 2 3 0 8 0 amappl11 160 62 0 51 1 0 1 1 0 8 0 amappl10 152 13 0 13 1 1 0 1 0 8 0 amappl9 144 122 0 120 1 0 1 1 0 8 0 amappl8 136 24 0 22 1 0 1 1 0 8 0 amappl7 128 154 0 143 1 0 1 1 0 8 0 amappl6 120 346 0 344 1 0 1 1 0 8 0 amappl5 112 203 0 194 1 0 1 1 0 8 0 amappl4 104 358 0 342 1 0 1 1 0 8 0 amappl3 96 7768 0 7657 4 0 4 4 0 8 0 amappl2 88 953 0 888 2 0 2 2 0 8 0 amappl1 80 12282 0 11745 14 1 13 13 0 8 1 amappl 88 11194 0 11022 5 0 5 5 0 92 0 dma32768 32768 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 0 1 1 0 8 1 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 128 253 0 253 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 91 0 1 2 0 2 2 0 8 0 uaddrrnd 24 1429 0 1398 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1429 0 1398 1 0 1 1 0 8 0 vmmpekpl 168 12411 0 12357 3 0 3 3 0 8 0 vmmpepl 168 94950 0 93152 101 12 89 89 0 357 10 vmsppl 344 1428 0 1398 4 1 3 4 0 8 0 rwobjpl 24 33439 0 28418 31 0 31 31 0 8 0 pdppl 4096 2864 0 2796 130 62 68 82 0 8 0 pvpl 32 736718 0 726382 347 123 224 224 0 265 135 pmappl 216 1428 0 1398 3 0 3 3 0 8 1 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 494 0 128 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:437 panic(ffffffff830ae47c) at panic+0x1cf sys/kern/subr_prf.c:198 __assert(ffffffff830685da,ffffffff830382e1,83,ffffffff830a8bd8) at __assert+0x29 rtmap_grow(17,21) at rtmap_grow+0x1f3 sys/net/rtable.c:131 rtable_add(16) at rtable_add+0x279 if_createrdomain(16,ffff80000155e800) at if_createrdomain+0x40 sys/net/if.c:1947 ifioctl(fffffd806d19d600,8020699f,ffff80003748dc30,ffff80002a49cce0) at ifioctl+0x19be sys/net/if.c:2296 sys_ioctl(ffff80002a49cce0,ffff80003748de10,ffff80003748dd60) at sys_ioctl+0x678 syscall(ffff80003748de10) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc2dddc8b650, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830ae47c) at panic+0x1cf sys/kern/subr_prf.c:198 __assert(ffffffff830685da,ffffffff830382e1,83,ffffffff830a8bd8) at __assert+0x29 rtmap_grow(17,21) at rtmap_grow+0x1f3 sys/net/rtable.c:131 rtable_add(16) at rtable_add+0x279 if_createrdomain(16,ffff80000155e800) at if_createrdomain+0x40 sys/net/if.c:1947 ifioctl(fffffd806d19d600,8020699f,ffff80003748dc30,ffff80002a49cce0) at ifioctl+0x19be sys/net/if.c:2296 sys_ioctl(ffff80002a49cce0,ffff80003748de10,ffff80003748dd60) at sys_ioctl+0x678 syscall(ffff80003748de10) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc2dddc8b650, count: -10