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 *277182 60579 0 0 0x4000000 1K syz-executor 450825 32544 0 0x2 0 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8344fee0) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff8348b390,ffffffff8348a204,84,ffffffff834e3c23) at __assert+0x29 sys/kern/subr_prf.c:-1 rtmap_grow(b5,21) at rtmap_grow+0x24f rtable_add(b4) at rtable_add+0x2d9 rtable_alloc sys/net/rtable.c:370 [inline] rtable_add(b4) at rtable_add+0x2d9 sys/net/rtable.c:223 if_createrdomain(b4,ffff8000015fb000) at if_createrdomain+0x40 sys/net/if.c:2046 ifioctl(ffff800010fdfa80,8020699f,ffff80003c41bbe0,ffff80003c3d6560) at ifioctl+0x1c52 sys/net/if.c:2395 sys_ioctl(ffff80003c3d6560,ffff80003c41bdc0,ffff80003c41bd10) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1 syscall(ffff80003c41bdc0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c41bdc0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x898c7cff030, 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: kernel diagnostic assertion "map->limit == rtmap_limit" failed: file "/syzkaller/managers/multicore/kernel/sys/net/rtable.c", line 132 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8344fee0) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff8348b390,ffffffff8348a204,84,ffffffff834e3c23) at __assert+0x29 sys/kern/subr_prf.c:-1 rtmap_grow(b5,21) at rtmap_grow+0x24f rtable_add(b4) at rtable_add+0x2d9 rtable_alloc sys/net/rtable.c:370 [inline] rtable_add(b4) at rtable_add+0x2d9 sys/net/rtable.c:223 if_createrdomain(b4,ffff8000015fb000) at if_createrdomain+0x40 sys/net/if.c:2046 ifioctl(ffff800010fdfa80,8020699f,ffff80003c41bbe0,ffff80003c3d6560) at ifioctl+0x1c52 sys/net/if.c:2395 sys_ioctl(ffff80003c3d6560,ffff80003c41bdc0,ffff80003c41bd10) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1 syscall(ffff80003c41bdc0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c41bdc0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x898c7cff030, count: -10 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80003c41b8f0 rbx 0xffff8000299bee07 rdx 0 rcx 0xffff80003c3d6560 rax 0xffff8000299bdff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x1bfc6f4f7a68237b r11 0x40a048b75367a5ef r12 0xffff8000299bec08 r13 0 r14 0 r15 0x1 rip 0xffffffff81654895 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c41b8e0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=277182 pid=60579 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=50, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c3d6d28,0xffffffff83987348 process=0xffff80003c608030 user=0xffff80003c416000, vmspace=0xfffffd806f5adb78 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 60579 235060 2118 0 3 0x80 fsleep syz-executor 60579 432714 2118 0 2 0x4000000 syz-executor *60579 277182 2118 0 7 0x4000000 syz-executor 32544 450825 97568 0 7 0x2 syz-executor 85699 507482 77831 0 3 0x80 fsleep syz-executor 85699 10631 77831 0 3 0x4000080 lockf syz-executor 39550 336870 13866 0 3 0x80 fsleep syz-executor 39550 294556 13866 0 3 0x4000080 bell syz-executor 39550 142509 13866 0 3 0x4000080 bell syz-executor 88464 242588 0 0 3 0x14200 acct acct 73660 312485 25436 0 3 0x80 fsleep syz-executor 73660 119129 25436 0 3 0x4000080 kqsel syz-executor 54735 473421 0 0 3 0x14280 nfsidl nfsio 61692 387593 0 0 3 0x14280 nfsidl nfsio 30495 342808 0 0 3 0x14280 nfsidl nfsio 43345 522479 0 0 3 0x14280 nfsidl nfsio 50954 337605 0 0 3 0x14280 nfsidl nfsio 65268 329903 0 0 3 0x14280 nfsidl nfsio 82395 31171 0 0 3 0x14280 nfsidl nfsio 6771 390360 0 0 3 0x14280 nfsidl nfsio 75019 63790 0 0 3 0x14280 nfsidl nfsio 2294 354078 0 0 3 0x14280 nfsidl nfsio 59737 46476 0 0 3 0x14280 nfsidl nfsio 3929 372722 0 0 3 0x14280 nfsidl nfsio 19823 508134 0 0 3 0x14280 nfsidl nfsio 32881 458361 0 0 3 0x14280 nfsidl nfsio 16558 320469 0 0 3 0x14280 nfsidl nfsio 12724 425310 0 0 3 0x14280 nfsidl nfsio 93929 9051 0 0 3 0x14280 nfsidl nfsio 45920 3817 0 0 3 0x14280 nfsidl nfsio 24439 350061 0 0 3 0x14280 nfsidl nfsio 30508 99307 0 0 3 0x14280 nfsidl nfsio 98668 120461 53415 0 3 0x80 fsleep syz-executor 98668 85430 53415 0 3 0x4000080 fifor syz-executor 98668 308579 53415 0 3 0x4000080 fsleep syz-executor 63914 203680 448 0 3 0x80 fsleep syz-executor 63914 59042 448 0 3 0x4000080 fifow syz-executor 73708 260519 84944 0 3 0x80 fsleep syz-executor 73708 16583 84944 0 3 0x4000080 ttyopn syz-executor 73708 170556 84944 0 3 0x4000080 fsleep syz-executor 67472 101193 1 0 3 0x100083 ttyopn getty 2118 92210 97568 0 3 0x82 nanoslp syz-executor 77831 155687 97568 0 3 0x82 nanoslp syz-executor 25436 406825 97568 0 3 0x82 nanoslp syz-executor 13866 344527 97568 0 3 0x82 nanoslp syz-executor 53415 9908 97568 0 3 0x82 nanoslp syz-executor 84944 298228 97568 0 3 0x82 nanoslp syz-executor 448 447326 97568 0 3 0x82 nanoslp syz-executor 97568 508447 1 0 3 0x82 kqread syz-executor 88403 404174 1 0 3 0x1000008a kqread sshd 43788 88656 58831 74 3 0x1100092 bpf pflogd 58831 62344 1 0 3 0x80 sbwait pflogd 91297 324313 15202 73 3 0x1100090 kqread syslogd 15202 482387 1 0 3 0x100082 sbwait syslogd 57254 167290 1 0 3 0x100080 kqread resolvd 11812 385872 42070 77 3 0x100092 kqread dhcpleased 73576 222662 42070 77 3 0x100092 kqread dhcpleased 42070 242987 1 0 3 0x80 kqread dhcpleased 48013 433251 0 0 3 0x14200 bored smr 28318 418965 0 0 3 0x14200 pgzero zerothread 77551 4814 0 0 3 0x14200 aiodoned aiodoned 94669 457276 0 0 3 0x14200 syncer update 56621 199196 0 0 3 0x14200 cleaner cleaner 85811 76627 0 0 3 0x14200 reaper reaper 21805 475582 0 0 3 0x14200 pgdaemon pagedaemon 7245 440017 0 0 3 0x14200 bored viomb 93740 182275 0 0 3 0x40014200 acpi0 acpi0 79859 459933 0 0 3 0x40014200 idle1 87335 5106 0 0 3 0x14200 bored softnet1 78741 6076 0 0 3 0x14200 bored softnet0 40126 144563 0 0 3 0x14200 smrbar systqmp 90679 136661 0 0 3 0x14200 bored systq 82414 149613 0 0 3 0x14200 tmoslp softclockmp 61058 427965 0 0 3 0x40014200 tmoslp softclock 25345 145693 0 0 3 0x40014200 idle0 1 15453 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}>