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 *149567 26363 0 0 0x4000000 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83419bd8) at panic+0x1cf sys/kern/subr_prf.c:198 __assert(ffffffff83455330,ffffffff83431729,84,ffffffff834a4e3c) at __assert+0x29 sys/kern/subr_prf.c:-1 rtmap_grow(c,21) at rtmap_grow+0x1f2 rtable_add(b) at rtable_add+0x289 rtable_alloc sys/net/rtable.c:370 [inline] rtable_add(b) at rtable_add+0x289 sys/net/rtable.c:223 if_createrdomain(b,ffff8000015ee000) at if_createrdomain+0x40 sys/net/if.c:2046 ifioctl(ffff800001595598,8020699f,ffff80002ccb94c0,ffff80002a7762a8) at ifioctl+0x1be2 sys/net/if.c:2395 sys_ioctl(ffff80002a7762a8,ffff80002ccb9690,ffff80002ccb95e0) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1 syscall(ffff80002ccb9690) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002ccb9690) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc6871a71000, 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(ffffffff83419bd8) at panic+0x1cf sys/kern/subr_prf.c:198 __assert(ffffffff83455330,ffffffff83431729,84,ffffffff834a4e3c) at __assert+0x29 sys/kern/subr_prf.c:-1 rtmap_grow(c,21) at rtmap_grow+0x1f2 rtable_add(b) at rtable_add+0x289 rtable_alloc sys/net/rtable.c:370 [inline] rtable_add(b) at rtable_add+0x289 sys/net/rtable.c:223 if_createrdomain(b,ffff8000015ee000) at if_createrdomain+0x40 sys/net/if.c:2046 ifioctl(ffff800001595598,8020699f,ffff80002ccb94c0,ffff80002a7762a8) at ifioctl+0x1be2 sys/net/if.c:2395 sys_ioctl(ffff80002a7762a8,ffff80002ccb9690,ffff80002ccb95e0) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1 syscall(ffff80002ccb9690) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002ccb9690) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc6871a71000, count: -10 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80002ccb91f0 rbx 0x21 rdx 0 rcx 0 rax 0xffff80002a7762a8 r8 0x101010101010101 r9 0x8080808080808080 r10 0x6a99b15eebc0369e r11 0x48f2c13b84cd523d r12 0 r13 0x6 r14 0 r15 0x1 rip 0xffffffff81389065 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002ccb91e0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb> show proc PROC (syz-executor) tid=149567 pid=26363 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=80, usrpri=81, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a776d08,0xffff80002f0c07f0 process=0xffff80002f0be418 user=0xffff80002ccb4000, vmspace=0xfffffd806cb2de70 estcpu=31, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 60658 458397 24421 0 2 0 syz-executor 60658 36690 24421 0 2 0x4000000 syz-executor 60658 315186 24421 0 2 0x4000000 syz-executor 10957 250302 82676 0 2 0 syz-executor 10957 286102 82676 0 3 0x4000080 kqread syz-executor 10957 32900 82676 0 2 0x4000000 syz-executor 26363 196930 64775 0 2 0 syz-executor 26363 329955 64775 0 2 0x4000000 syz-executor *26363 149567 64775 0 7 0x4000000 syz-executor 46488 197039 1 0 3 0x80 nanoslp init 79597 410880 82718 0 2 0x10 syz-executor 79597 237346 82718 0 2 0x4000010 syz-executor 79597 390228 82718 0 3 0x4000090 fsleep syz-executor 63124 269360 26746 0 2 0 syz-executor 63124 356016 26746 0 2 0x4000000 syz-executor 63124 523811 26746 0 3 0x4000080 fsleep syz-executor 70893 47949 663 60929 3 0x90 nanoslp syz-executor 70893 40966 663 60929 3 0x4000090 kqread syz-executor 70893 407401 663 60929 3 0x4000090 fsleep syz-executor 70893 399394 663 60929 3 0x4000090 fsleep syz-executor 38158 243309 45379 0 3 0 vmmaplk syz-executor 38158 107264 45379 0 2 0x4000000 syz-executor 38158 468013 45379 0 3 0x4000080 fsleep syz-executor 84378 92404 0 0 3 0x14200 acct acct 45379 169665 75229 0 3 0x82 nanoslp syz-executor 64775 193410 75229 0 2 0xc82 syz-executor 24421 287420 75229 0 3 0x82 nanoslp syz-executor 82676 287126 75229 0 3 0x82 nanoslp syz-executor 82718 463719 75229 0 2 0xc82 syz-executor 663 421668 75229 0 2 0xc82 syz-executor 26746 502007 75229 0 3 0x82 nanoslp syz-executor 84425 161564 75229 0 2 0x2 syz-executor 75229 84343 1 0 3 0x82 kqread syz-executor 34336 20745 0 0 3 0x14200 bored smr 33602 401243 0 0 2 0x14200 zerothread 40119 406379 0 0 3 0x14200 aiodoned aiodoned 26750 214428 0 0 3 0x14200 syncer update 22070 384040 0 0 3 0x14200 cleaner cleaner 66034 446677 0 0 3 0x14200 reaper reaper 43735 413506 0 0 3 0x14200 pgdaemon pagedaemon 60789 392887 0 0 3 0x14200 bored viomb 57241 492717 0 0 3 0x40014200 acpi0 acpi0 11457 472890 0 0 2 0x14200 softnet0 69773 69855 0 0 3 0x14200 bored systqmp 30133 78340 0 0 3 0x14200 bored systq 6839 176949 0 0 3 0x40014200 tmoslp softclock 74182 11714 0 0 3 0x40014200 idle0 1 429085 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb>