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 *204696 39991 0 0 0x4000000 0K syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83372095) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833aeea3,ffffffff833ae31e,84,ffffffff834091b3) at __assert+0x29 sys/kern/subr_prf.c:-1 rtmap_grow(21,21) at rtmap_grow+0x24f rtable_add(20) at rtable_add+0x2d9 rtable_alloc sys/net/rtable.c:370 [inline] rtable_add(20) at rtable_add+0x2d9 sys/net/rtable.c:223 if_createrdomain(20,ffff800001475800) at if_createrdomain+0x40 sys/net/if.c:1952 ifioctl(ffff800010fd68e8,8020699f,ffff800033c14ef0,ffff80003b4362c0) at ifioctl+0x1c66 sys/net/if.c:2301 sys_ioctl(ffff80003b4362c0,ffff800033c150d0,ffff800033c15020) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1 syscall(ffff800033c150d0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800033c150d0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x67dc0d9860, 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(ffffffff83372095) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833aeea3,ffffffff833ae31e,84,ffffffff834091b3) at __assert+0x29 sys/kern/subr_prf.c:-1 rtmap_grow(21,21) at rtmap_grow+0x24f rtable_add(20) at rtable_add+0x2d9 rtable_alloc sys/net/rtable.c:370 [inline] rtable_add(20) at rtable_add+0x2d9 sys/net/rtable.c:223 if_createrdomain(20,ffff800001475800) at if_createrdomain+0x40 sys/net/if.c:1952 ifioctl(ffff800010fd68e8,8020699f,ffff800033c14ef0,ffff80003b4362c0) at ifioctl+0x1c66 sys/net/if.c:2301 sys_ioctl(ffff80003b4362c0,ffff800033c150d0,ffff800033c15020) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1 syscall(ffff800033c150d0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800033c150d0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x67dc0d9860, count: -10 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800033c14c00 rbx 0xffffffff837b6ddf cpu_info_full_primary+0x2ddf rdx 0 rcx 0xffff80003b4362c0 rax 0xffffffff837b5ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x4b302367b5c67bf9 r11 0x92aac827ef0e43c9 r12 0xffffffff837b6be0 cpu_info_full_primary+0x2be0 r13 0 r14 0 r15 0x1 rip 0xffffffff829509b5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff800033c14bf0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=204696 pid=39991 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=82, usrpri=82, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003b436a88,0xffff80003b436d30 process=0xffff8000354266a0 user=0xffff800033c10000, vmspace=0xfffffd806b9ce7b8 estcpu=32, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 99025 292039 52310 0 3 0x80 fsleep syz-executor 99025 197875 52310 0 2 0x4000000 syz-executor 99025 310511 52310 0 2 0x4000000 syz-executor 40180 154883 31096 0 2 0 syz-executor 55508 252252 8266 0 2 0 syz-executor 39991 285190 99348 0 3 0x80 fsleep syz-executor *39991 204696 99348 0 7 0x4000000 syz-executor 39991 329590 99348 0 2 0x4000000 syz-executor 25631 349864 5249 0 3 0x80 fsleep syz-executor 25631 241365 5249 0 3 0x4000080 sbwait syz-executor 48067 504195 94117 0 3 0x80 fsleep syz-executor 48067 299316 94117 0 2 0x4000000 syz-executor 51389 12531 0 0 3 0x14280 nfsidl nfsio 62046 420589 0 0 3 0x14280 nfsidl nfsio 37000 167281 0 0 3 0x14280 nfsidl nfsio 84222 168762 0 0 3 0x14280 nfsidl nfsio 50488 172913 0 0 3 0x14280 nfsidl nfsio 68550 189101 0 0 3 0x14280 nfsidl nfsio 18069 216793 0 0 3 0x14280 nfsidl nfsio 28935 12696 0 0 3 0x14280 nfsidl nfsio 66833 226235 0 0 3 0x14280 nfsidl nfsio 90657 324268 0 0 3 0x14280 nfsidl nfsio 93099 33677 0 0 3 0x14280 nfsidl nfsio 35770 401662 0 0 3 0x14280 nfsidl nfsio 59048 357360 0 0 3 0x14280 nfsidl nfsio 93932 361228 0 0 3 0x14280 nfsidl nfsio 56492 432680 0 0 3 0x14280 nfsidl nfsio 23160 247144 0 0 3 0x14280 nfsidl nfsio 82038 318236 0 0 3 0x14280 nfsidl nfsio 14200 503308 0 0 3 0x14280 nfsidl nfsio 80830 405590 0 0 3 0x14280 nfsidl nfsio 12364 195677 0 0 3 0x14280 nfsidl nfsio 31980 355587 0 0 3 0x14200 bored sosplice 31096 365724 28698 0 2 0xc82 syz-executor 99969 73393 28698 0 2 0xc82 syz-executor 52310 393811 28698 0 2 0xc82 syz-executor 5249 95390 28698 0 2 0xc82 syz-executor 8266 21581 28698 0 2 0xc82 syz-executor 94117 408629 28698 0 2 0xc82 syz-executor 77686 141650 28698 0 2 0xc82 syz-executor 99348 162427 28698 0 2 0xc82 syz-executor 28698 326330 70914 0 3 0x82 kqread syz-executor 70914 126887 53534 0 3 0x10008a sigsusp ksh 53534 37187 41950 0 3 0x98 kqread sshd-session 41950 464960 37984 0 3 0x92 kqread sshd-session 42543 385121 1 0 3 0x100083 ttyin getty 37984 512747 1 0 3 0x88 kqread sshd 99500 337443 60358 74 3 0x1100092 bpf pflogd 60358 74980 1 0 3 0x80 sbwait pflogd 33460 259851 33846 73 2 0x1100090 syslogd 33846 402422 1 0 3 0x100082 sbwait syslogd 92090 410272 1 0 3 0x100080 kqread resolvd 92508 211564 47831 77 3 0x100092 kqread dhcpleased 46557 318160 47831 77 3 0x100092 kqread dhcpleased 47831 237134 1 0 3 0x80 kqread dhcpleased 29703 51512 0 0 3 0x14200 bored smr 75575 258976 0 0 2 0x14200 zerothread 77823 242456 0 0 3 0x14200 aiodoned aiodoned 74030 1203 0 0 3 0x14200 syncer update 29699 361348 0 0 3 0x14200 cleaner cleaner 83333 36385 0 0 3 0x14200 reaper reaper 91265 409553 0 0 3 0x14200 pgdaemon pagedaemon 54504 365227 0 0 3 0x14200 bored viomb 51533 309537 0 0 3 0x40014200 acpi0 acpi0 40861 447225 0 0 3 0x40014200 idle1 74216 18353 0 0 3 0x14200 bored softnet7 81204 388442 0 0 3 0x14200 bored softnet6 93326 484800 0 0 3 0x14200 bored softnet5 85663 300965 0 0 3 0x14200 bored softnet4 25601 301220 0 0 3 0x14200 bored softnet3 8269 394076 0 0 3 0x14200 bored softnet2 15379 388174 0 0 3 0x14200 bored softnet1 9533 313621 0 0 3 0x14200 bored softnet0 51724 107051 0 0 3 0x14200 bored systqmp 93511 205225 0 0 3 0x14200 bored systq 36670 150614 0 0 3 0x14200 tmoslp softclockmp 4776 160801 0 0 2 0x40014200 softclock 60168 109687 0 0 3 0x40014200 idle0 1 159853 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 1: exclusive mutex &uvm.fpageqlock r = 0 (0xffffffff839aef98) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x1ad sys/kern/kern_lock.c:311 #2 mtx_enter+0x62 sys/kern/kern_lock.c:261 #3 uvm_pmr_freepages+0x1a8 sys/uvm/uvm_pmemrange.c:-1 #4 uvm_anfree_list+0x1e5 sys/uvm/uvm_anon.c:129 #5 amap_wipeout+0x248 sys/uvm/uvm_amap.c:-1 #6 uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1353 #7 uvm_map_teardown+0x360 sys/uvm/uvm_map.c:2525 #8 exit1+0x6fc sys/kern/kern_exit.c:260 #9 sys_exit+0x1a sys/kern/kern_exit.c:-1 #10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 #11 Xsyscall+0x128 Process 99025 (syz-executor) thread 0xffff80003c4f34f8 (310511) exclusive rwlock vmmaplk r = 0 (0xfffffd806b9cec88) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5168 #3 uvmfault_lookup+0xe8 sys/uvm/uvm_fault.c:1918 #4 uvm_fault_check+0x895 uvmfault_amapcopy sys/uvm/uvm_fault.c:235 [inline] #4 uvm_fault_check+0x895 sys/uvm/uvm_fault.c:784 #5 uvm_fault+0x106 sys/uvm/uvm_fault.c:677 #6 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #7 usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:603 #8 recall_trap+0x8 Process 39991 (syz-executor) thread 0xffff80003b4362c0 (204696) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff8398d718) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 #2 malloc+0xe3 sys/kern/kern_malloc.c:174 #3 rtmap_grow+0xb2 sys/net/rtable.c:127 #4 rtable_add+0x2d9 rtable_alloc sys/net/rtable.c:370 [inline] #4 rtable_add+0x2d9 sys/net/rtable.c:223 #5 if_createrdomain+0x40 sys/net/if.c:1952 #6 ifioctl+0x1c66 sys/net/if.c:2301 #7 sys_ioctl+0x674 sys/kern/sys_generic.c:-1 #8 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10235 11054K 11284K 166960K 11759 0 pcb 19 12K 12K 166960K 71 0 rtable 209 8K 8K 166960K 330 0 pf 35 17K 20K 166960K 83 0 ifaddr 42 7K 8K 166960K 64 0 ifgroup 55 2K 2K 166960K 96 0 sysctl 3 1K 9K 166960K 9 0 counters 68 36K 37K 166960K 110 0 ioctlops 0 0K 4K 166960K 1546 0 iov 1 12K 12K 166960K 10 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1342 84K 85K 166960K 1585 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 7 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 59 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 85K 166960K 452 0 sigio 0 0K 0K 166960K 10 0 proc 72 115K 180K 166960K 543 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 117 0 in_multi 95 7K 7K 166960K 115 0 ether_multi 1 0K 0K 166960K 2 0 mrt 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 217 970K 970K 166960K 217 0 exec 0 0K 1K 166960K 397 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 225 159K 174K 166960K 5898 0 UVM aobj 12 2K 2K 166960K 15 0 pinsyscall 42 84K 102K 166960K 1540 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 0K 166960K 18 0 NDP 12 0K 2K 166960K 41 0 temp 49 8644K 8720K 166960K 16614 0 kqueue 13 20K 33K 166960K 85 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 54 0 51 1 0 1 1 0 8 0 rtentry 176 113 0 25 5 0 5 5 0 8 0 unpcb 144 268 0 248 5 3 2 4 0 8 1 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 736 124 0 115 5 3 2 4 0 8 1 arp 128 16 0 2 1 0 1 1 0 8 0 inpcb 328 363 0 348 4 2 2 4 0 8 0 nd6 144 18 0 0 1 0 1 1 0 8 0 pkpcb 40 4 0 4 2 1 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 17 0 17 1 1 0 1 0 8 0 pppxif 1504 1 0 1 1 1 0 1 0 8 0 pffrag 232 4 0 2 1 0 1 1 0 482 0 pffrnode 88 4 0 2 1 0 1 1 0 8 0 pffrent 40 7 0 5 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 pfstitem 24 52 0 2 1 0 1 1 0 8 0 pfstkey 128 54 0 4 2 0 2 2 0 8 0 pfstate 384 52 0 3 5 0 5 5 0 8 0 pfrule 1344 22 0 17 2 1 1 2 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 489 0 108 30 4 26 30 0 8 0 art_table 40 492 0 108 5 0 5 5 0 8 0 art_node 32 111 0 34 1 0 1 1 0 8 0 sysvmsgpl 40 5 0 4 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 53 0 43 1 0 1 1 0 8 0 shmpl 112 12 0 3 1 0 1 1 0 8 0 dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 2192 0 686 95 0 95 95 0 8 0 ffsino 296 2192 0 686 117 0 117 117 0 8 0 nchpl 144 2820 0 1132 63 0 63 63 0 8 0 rtmask 32 3 0 3 1 1 0 1 0 8 0 uvmvnodes 80 2378 0 0 49 0 49 49 0 8 0 vnodes 216 2378 0 0 133 0 133 133 0 8 0 namei 1024 9667 0 9666 2 1 1 2 0 8 0 percpumem 16 70 0 21 1 0 1 1 0 8 0 kstatmem 264 52 0 26 3 0 3 3 0 8 1 scsiplug 72 3 0 3 1 1 0 1 0 8 0 scxspl 216 14558 0 14558 12 4 8 8 1 8 8 plimitpl 152 106 0 89 1 0 1 1 0 8 0 sigapl 424 777 0 702 9 0 9 9 0 8 0 knotepl 120 315 0 0 10 0 10 10 0 8 0 kqueuepl 224 131 0 122 1 0 1 1 0 8 0 pipepl 344 169 0 142 6 3 3 6 0 8 0 fdescpl 528 734 0 703 3 0 3 3 0 8 0 filepl 160 3958 0 3736 16 5 11 15 0 8 1 lockfpl 104 249 0 247 2 1 1 2 0 8 0 lockfspl 48 68 0 66 1 0 1 1 0 8 0 sessionpl 144 24 0 15 1 0 1 1 0 8 0 pgrppl 48 73 0 56 1 0 1 1 0 8 0 ucredpl 104 628 0 615 1 0 1 1 0 8 0 zombiepl 144 773 0 771 1 0 1 1 0 8 0 processpl 1232 777 0 702 6 0 6 6 0 8 0 procpl 664 1395 0 1314 8 0 8 8 0 8 0 sosppl 168 4 0 4 2 1 1 1 0 8 1 sockpl 752 698 0 659 11 6 5 11 0 8 0 mcl64k 65536 10 0 0 2 0 2 2 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 125 0 0 16 0 16 16 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 22 0 0 3 0 3 3 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 177 0 0 12 0 12 12 0 8 0 bufpl 280 6126 0 121 429 0 429 429 0 8 0 anonpl 32 10096 0 0 82 0 82 82 0 246 0 amapchunkpl 152 20143 0 19691 40 13 27 32 0 158 6 amappl16 200 2900 0 2869 24 18 6 23 0 8 0 amappl15 192 9 0 9 2 2 0 1 0 8 0 amappl14 184 112 0 99 1 0 1 1 0 8 0 amappl13 176 5 0 5 1 1 0 1 0 8 0 amappl12 168 1397 0 1366 3 1 2 2 0 8 0 amappl11 160 56 0 42 1 0 1 1 0 8 0 amappl10 152 5 0 5 1 1 0 1 0 8 0 amappl9 144 251 0 251 1 1 0 1 0 8 0 amappl8 136 43 0 41 1 0 1 1 0 8 0 amappl7 128 105 0 93 1 0 1 1 0 8 0 amappl6 120 178 0 174 1 0 1 1 0 8 0 amappl5 112 131 0 121 1 0 1 1 0 8 0 amappl4 104 302 0 283 1 0 1 1 0 8 0 amappl3 96 3193 0 3104 3 0 3 3 0 8 0 amappl2 88 983 0 904 2 0 2 2 0 8 0 amappl1 80 9938 0 9336 15 0 15 15 0 8 0 amappl 88 5155 0 5001 5 0 5 5 0 92 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 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 14 0 3 1 0 1 1 0 8 0 uaddrrnd 24 734 0 703 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 734 0 703 1 0 1 1 0 8 0 vmmpekpl 168 7867 0 7832 3 0 3 3 0 8 0 vmmpepl 168 53415 0 51459 107 11 96 107 0 357 4 vmsppl 488 733 0 702 5 1 4 5 0 8 0 rwobjpl 80 19736 0 16432 69 0 69 69 0 8 0 pdppl 4096 1476 0 1404 102 30 72 82 0 8 0 pvpl 32 16842 0 0 137 1 136 136 0 265 0 pmappl 256 733 0 702 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 282 0 41 8 0 8 8 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(ffffffff83372095) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833aeea3,ffffffff833ae31e,84,ffffffff834091b3) at __assert+0x29 sys/kern/subr_prf.c:-1 rtmap_grow(21,21) at rtmap_grow+0x24f rtable_add(20) at rtable_add+0x2d9 rtable_alloc sys/net/rtable.c:370 [inline] rtable_add(20) at rtable_add+0x2d9 sys/net/rtable.c:223 if_createrdomain(20,ffff800001475800) at if_createrdomain+0x40 sys/net/if.c:1952 ifioctl(ffff800010fd68e8,8020699f,ffff800033c14ef0,ffff80003b4362c0) at ifioctl+0x1c66 sys/net/if.c:2301 sys_ioctl(ffff80003b4362c0,ffff800033c150d0,ffff800033c15020) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1 syscall(ffff800033c150d0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800033c150d0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x67dc0d9860, count: -10 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299edff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 sys/dev/kcov.c:153 __mp_lock(ffffffff8398d510) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8398d510) at __mp_lock+0x1a3 sys/kern/kern_lock.c:165 exit1(ffff80003b437250,b,0,1) at exit1+0x701 sys/kern/kern_exit.c:260 sys_exit(ffff80003b437250,ffff80003c445cc0,ffff80003c445c10) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c445cc0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c445cc0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x72e3373d28f0, count: 6 ddb{1}> trace x86_ipi_db(ffff8000299edff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 sys/dev/kcov.c:153 __mp_lock(ffffffff8398d510) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8398d510) at __mp_lock+0x1a3 sys/kern/kern_lock.c:165 exit1(ffff80003b437250,b,0,1) at exit1+0x701 sys/kern/kern_exit.c:260 sys_exit(ffff80003b437250,ffff80003c445cc0,ffff80003c445c10) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c445cc0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c445cc0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x72e3373d28f0, count: -9