login: panic: kernel diagnostic assertion "map->limit == rtmap_limit" failed: file "/syzkaller/managers/multicore/kernel/sys/net/rtable.c", line 132 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *445130 93789 0 0 0x4000000 0 syz-executor 389891 69825 0 0x14000 0x200 1 smr db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff834be690) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff834f96fd,ffffffff834f31d0,84,ffffffff8354cd30) at __assert+0x29 sys/kern/subr_prf.c:-1 rtmap_grow(c,21) at rtmap_grow+0x24f rtable_add(b) at rtable_add+0x2d9 rtable_alloc sys/net/rtable.c:370 [inline] rtable_add(b) at rtable_add+0x2d9 sys/net/rtable.c:223 if_createrdomain(b,ffff800001607800) at if_createrdomain+0x40 sys/net/if.c:2046 ifioctl(ffff800001635538,8020699f,ffff8000357bc460,ffff80002a220018) at ifioctl+0x1c52 sys/net/if.c:2395 sys_ioctl(ffff80002a220018,ffff8000357bc640,ffff8000357bc590) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1 syscall(ffff8000357bc640) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000357bc640) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbf7acf405b0, 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: kernel diagnostic assertion "map->limit == rtmap_limit" failed: file "/syzkaller/managers/multicore/kernel/sys/net/rtable.c", line 132 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff834be690) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff834f96fd,ffffffff834f31d0,84,ffffffff8354cd30) at __assert+0x29 sys/kern/subr_prf.c:-1 rtmap_grow(c,21) at rtmap_grow+0x24f rtable_add(b) at rtable_add+0x2d9 rtable_alloc sys/net/rtable.c:370 [inline] rtable_add(b) at rtable_add+0x2d9 sys/net/rtable.c:223 if_createrdomain(b,ffff800001607800) at if_createrdomain+0x40 sys/net/if.c:2046 ifioctl(ffff800001635538,8020699f,ffff8000357bc460,ffff80002a220018) at ifioctl+0x1c52 sys/net/if.c:2395 sys_ioctl(ffff80002a220018,ffff8000357bc640,ffff8000357bc590) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1 syscall(ffff8000357bc640) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000357bc640) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbf7acf405b0, count: -10 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff8000357bc170 rbx 0xffffffff838d6e07 cpu_info_full_primary+0x2e07 rdx 0 rcx 0xffff80002a220018 rax 0xffffffff838d5ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xbe935836d86a3e0a r11 0x1cc29c27d16515b8 r12 0xffffffff838d6c08 cpu_info_full_primary+0x2c08 r13 0 r14 0 r15 0x1 rip 0xffffffff82db5c65 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff8000357bc160 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=445130 pid=93789 tcnt=4 stat=onproc flags process=0 proc=4000000 runpri=68, usrpri=68, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a2207e0,0xffff80002a220558 process=0xffff8000fffed828 user=0xffff8000357b7000, vmspace=0xfffff5006c6bb5d0 estcpu=18, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 27030 409383 60891 0 2 0 syz-executor 31299 81531 32298 0 2 0 syz-executor 31299 79734 32298 0 2 0x4000000 syz-executor 229 373622 63405 0 2 0 syz-executor 229 177673 63405 0 3 0x4000080 fsleep syz-executor 30289 50803 9712 0 2 0 syz-executor 30289 255096 9712 0 2 0x4000000 syz-executor 54794 39893 89731 0 3 0x3010 suspend syz-executor 54794 282562 89731 0 2 0x4081010 syz-executor 93789 520633 28850 0 2 0 syz-executor 93789 131404 28850 0 2 0x4000000 syz-executor *93789 445130 28850 0 7 0x4000000 syz-executor 93789 331071 28850 0 2 0x4000000 syz-executor 94960 43355 33261 0 2 0x2 syz-executor 31873 175744 1 0 3 0x100083 ttyin getty 63405 252725 33261 0 3 0x82 nanoslp syz-executor 9712 64357 33261 0 2 0xc82 syz-executor 89731 147029 33261 0 3 0x82 nanoslp syz-executor 60891 506524 33261 0 3 0x82 nanoslp syz-executor 28850 18190 33261 0 2 0xc82 syz-executor 42342 394987 33261 0 2 0xc82 syz-executor 32298 89292 33261 0 3 0x82 nanoslp syz-executor 33261 364535 63743 0 3 0x82 kqread syz-executor 63743 338986 76075 0 3 0x10008a sigsusp ksh 76075 198224 66714 0 3 0x98 kqread sshd-session 66714 441351 41477 0 3 0x92 kqread sshd-session 41477 124611 1 0 3 0x88 kqread sshd 74463 263467 22937 74 3 0x1100092 bpf pflogd 22937 30263 1 0 3 0x80 sbwait pflogd 1495 453457 84465 73 3 0x1100090 kqread syslogd 84465 53246 1 0 3 0x100082 sbwait syslogd 27566 236518 1 0 3 0x100080 kqread resolvd 8509 389884 26778 77 3 0x100092 kqread dhcpleased 72049 176620 26778 77 3 0x100092 kqread dhcpleased 26778 314448 1 0 3 0x80 kqread dhcpleased 69825 389891 0 0 7 0x14200 smr 56886 45420 0 0 2 0x14200 zerothread 81186 88474 0 0 3 0x14200 aiodoned aiodoned 58238 384186 0 0 3 0x14200 syncer update 26808 98343 0 0 3 0x14200 cleaner cleaner 5567 465662 0 0 3 0x14200 reaper reaper 77325 177085 0 0 3 0x14200 pgdaemon pagedaemon 69176 345297 0 0 3 0x14200 bored viomb 74396 378887 0 0 3 0x40014200 acpi0 acpi0 31528 364062 0 0 3 0x40014200 idle1 85162 30441 0 0 3 0x14200 bored softnet1 8037 477039 0 0 3 0x14200 bored softnet0 36067 62789 0 0 3 0x14200 bored systqmp 53737 496168 0 0 3 0x14200 bored systq 68949 221296 0 0 2 0x14200 softclockmp 86619 310863 0 0 3 0x40014200 netlock softclock 48292 291481 0 0 3 0x40014200 idle0 1 195510 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 30289 (syz-executor) thread 0xffff80002a220548 (255096) Process 54794 (syz-executor) thread 0xffff80002a2207e0 (282562) Process 93789 (syz-executor) thread 0xffff80002a220018 (445130) Process 94960 (syz-executor) thread 0xffff80002a2222a8 (43355) Process 86619 (softclock) thread 0xffff8000fffff4c0 (310863) ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11097 12159K 12428K 166960K 12694 0 pcb 19 13K 21K 166960K 175 0 rtable 201 7K 8K 166960K 844 0 pf 35 17K 25K 166960K 184 0 ifaddr 34 5K 8K 166960K 119 0 ifgroup 51 2K 2K 166960K 151 0 sysctl 4 1K 9K 166960K 12 0 counters 68 36K 37K 166960K 140 0 ioctlops 0 0K 4K 166960K 1573 0 iov 0 0K 16K 166960K 20 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1295 81K 82K 166960K 1944 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 9K 166960K 20 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 24 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 89K 166960K 808 0 sigio 0 0K 0K 166960K 6 0 proc 72 115K 180K 166960K 989 0 subproc 72 4K 4K 166960K 198 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 1 0K 0K 166960K 37 0 in_multi 71 5K 7K 166960K 251 0 ether_multi 2 0K 0K 166960K 3 0 mrt 2 0K 0K 166960K 28 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 241 1076K 1076K 166960K 241 0 exec 0 0K 1K 166960K 613 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 240 159K 177K 166960K 8599 0 UVM aobj 30 2K 2K 166960K 31 0 pinsyscall 43 86K 104K 166960K 2363 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 2 0K 0K 166960K 21 0 NDP 11 0K 1K 166960K 82 0 temp 54 9118K 9178K 166960K 24159 0 kqueue 13 20K 27K 166960K 111 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 26 0 0 1 0 1 1 0 8 0 rtpcb 120 89 0 85 1 0 1 1 0 8 0 rtentry 176 284 0 200 6 0 6 6 0 8 0 unpcb 144 323 0 306 5 4 1 4 0 8 0 syncache 336 10 0 10 1 1 0 1 0 8 0 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 736 260 0 182 8 0 8 8 0 8 0 arp 136 51 0 37 1 0 1 1 0 8 0 inpcb 328 742 0 657 11 3 8 9 0 8 0 nd6 152 70 0 51 2 1 1 2 0 8 0 pkpcb 40 3 0 2 3 2 1 1 0 8 0 kcovpl 48 22 0 14 1 0 1 1 0 8 0 mppekey 1024 2 0 2 2 2 0 1 0 8 0 ppxss 1192 17 0 17 1 1 0 1 0 8 0 pppxif 1576 2 0 2 2 2 0 1 0 8 0 pfstscr 40 7 0 4 1 0 1 1 0 8 0 pffrag 232 9 0 1 1 0 1 1 0 482 0 pffrnode 88 8 0 1 1 0 1 1 0 8 0 pffrent 40 10 0 2 1 0 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfsrclim 320 1 0 1 1 1 0 1 0 8 0 pfstlim 224 1 0 1 1 1 0 1 0 8 0 pfanchor 1288 11 0 1 1 0 1 1 0 8 0 pftag 88 3 0 0 1 0 1 1 0 8 0 pfstitem 24 78 0 19 1 0 1 1 0 8 0 pfstkey 128 82 0 23 2 0 2 2 0 8 0 pfstate 448 76 0 20 7 0 7 7 0 8 0 pfrule 1360 27 0 22 2 1 1 2 0 8 0 rttmr 136 2 0 2 1 1 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 1191 0 812 33 5 28 33 0 8 0 art_table 40 1193 0 812 6 1 5 6 0 8 0 art_node 32 283 0 205 1 0 1 1 0 8 0 sysvmsgpl 40 9 0 4 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 72 21 0 11 1 0 1 1 0 8 0 shmpl 112 28 0 1 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2559 0 1055 95 0 95 95 0 8 0 ffsino 296 2559 0 1055 116 0 116 116 0 8 0 nchpl 144 3423 0 1663 66 0 66 66 0 8 0 rtmask 32 3 0 3 1 1 0 1 0 8 0 vnodes 216 2960 0 0 165 0 165 165 0 8 0 namei 1024 12663 0 12662 4 2 2 2 0 8 1 percpumem 16 85 0 36 1 0 1 1 0 8 0 kstatmem 264 83 0 58 3 1 2 3 0 8 0 scsiplug 72 6 0 6 1 1 0 1 0 8 0 scxspl 216 14876 0 14876 11 10 1 8 1 8 1 plimitpl 152 141 0 124 1 0 1 1 0 8 0 sigapl 424 1112 0 1064 7 1 6 7 0 8 0 knotepl 120 502 0 0 15 0 15 15 0 8 0 kqueuepl 224 160 0 151 1 0 1 1 0 8 0 pipepl 344 197 0 169 3 0 3 3 0 8 0 fdescpl 528 1096 0 1064 3 0 3 3 0 8 0 filepl 160 5784 0 5489 24 11 13 19 0 8 0 lockfpl 104 307 0 303 1 0 1 1 0 8 0 lockfspl 48 97 0 93 1 0 1 1 0 8 0 sessionpl 144 55 0 46 1 0 1 1 0 8 0 pgrppl 48 83 0 66 1 0 1 1 0 8 0 ucredpl 104 1181 0 1167 1 0 1 1 0 8 0 zombiepl 144 1074 0 1069 1 0 1 1 0 8 0 processpl 1232 1112 0 1064 5 1 4 5 0 8 0 procpl 664 1903 0 1845 8 2 6 7 0 8 0 sosppl 176 10 0 10 2 2 0 1 0 8 0 sockpl 752 1202 0 1095 22 11 11 20 0 8 0 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k128 9344 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 1 0 0 1 0 1 1 0 8 0 mcl4k 4096 136 0 0 17 0 17 17 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 28 0 0 4 0 4 4 0 8 0 mtagpl 96 8 0 0 1 0 1 1 0 8 0 mbufpl 256 222 0 0 14 0 14 14 0 8 0 bufpl 272 5447 0 106 357 0 357 357 0 8 0 anonpl 32 8209 0 0 67 0 67 67 0 246 0 amapchunkpl 152 26836 0 26327 46 24 22 37 0 158 1 amappl16 200 2421 0 2391 29 25 4 17 0 8 0 amappl15 192 4 0 4 1 1 0 1 0 8 0 amappl14 184 602 0 600 1 0 1 1 0 8 0 amappl13 176 159 0 147 1 0 1 1 0 8 0 amappl12 168 1402 0 1372 2 0 2 2 0 8 0 amappl11 160 4 0 4 1 1 0 1 0 8 0 amappl10 152 61 0 47 1 0 1 1 0 8 0 amappl9 144 279 0 278 1 0 1 1 0 8 0 amappl8 136 154 0 151 1 0 1 1 0 8 0 amappl7 128 180 0 167 1 0 1 1 0 8 0 amappl6 120 297 0 296 1 0 1 1 0 8 0 amappl5 112 105 0 95 1 0 1 1 0 8 0 amappl4 104 356 0 335 1 0 1 1 0 8 0 amappl3 96 5176 0 5065 4 0 4 4 0 8 0 amappl2 88 695 0 632 2 0 2 2 0 8 0 amappl1 80 15148 0 14548 18 3 15 16 0 8 0 amappl 88 7534 0 7366 6 1 5 5 0 92 0 uvmvnodes 80 117 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 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma512 512 1 0 1 1 1 0 1 0 8 0 dma256 256 7 0 7 2 2 0 1 0 8 0 dma128 128 256 0 256 3 3 0 1 0 8 0 dma64 64 7 0 7 2 2 0 1 0 8 0 dma32 32 8 0 8 2 2 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 30 0 1 1 0 1 1 0 8 0 uaddrrnd 24 1096 0 1064 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1096 0 1064 1 0 1 1 0 8 0 vmmpekpl 168 10717 0 10677 3 0 3 3 0 8 0 vmmpepl 168 77826 0 75880 101 14 87 98 0 357 0 vmsppl 488 1095 0 1064 5 1 4 5 0 8 0 rwobjpl 80 23902 0 22827 29 3 26 28 0 8 0 pdppl 4096 2199 0 2128 127 56 71 83 0 8 0 pvpl 32 14957 0 0 121 0 121 121 0 265 0 pmappl 256 1095 0 1064 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 688 0 72 18 0 18 18 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff834be690) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff834f96fd,ffffffff834f31d0,84,ffffffff8354cd30) at __assert+0x29 sys/kern/subr_prf.c:-1 rtmap_grow(c,21) at rtmap_grow+0x24f rtable_add(b) at rtable_add+0x2d9 rtable_alloc sys/net/rtable.c:370 [inline] rtable_add(b) at rtable_add+0x2d9 sys/net/rtable.c:223 if_createrdomain(b,ffff800001607800) at if_createrdomain+0x40 sys/net/if.c:2046 ifioctl(ffff800001635538,8020699f,ffff8000357bc460,ffff80002a220018) at ifioctl+0x1c52 sys/net/if.c:2395 sys_ioctl(ffff80002a220018,ffff8000357bc640,ffff8000357bc590) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1 syscall(ffff8000357bc640) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000357bc640) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbf7acf405b0, count: -10 ddb{0}> machine ddbcpu 1