panic: kernel diagnostic assertion "sin6tosa(&ro->ro_dst)->sa_family == AF_INET6" failed: file "/syzkaller/managers/setuid/kernel/sys/netinet6/in6_src.c", line 328 Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *484637 80260 32767 0x10 0x4000000 0 syz-executor.5 501377 49329 32767 0x10 0 1 syz-executor.2 db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82873283) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff828f938f,ffffffff82868107,148,ffffffff829481fe) at __assert+0x29 sys/kern/subr_prf.c:157 in6_selectroute(ffff80002c283ba0,ffff800000dfef80,fffffd806b7dae38,0) at in6_selectroute+0x228 sys/netinet6/in6_src.c:328 ip6_output(fffffd806d447700,ffff800000dfef80,fffffd806b7dae38,0,0,fffffd806b7daef8) at ip6_output+0xc6a sys/netinet6/ip6_output.c:467 tcp_output(ffff800000f78028) at tcp_output+0x2877 sys/netinet/tcp_output.c:1110 tcp_connect(fffffd80748b5020,fffffd8074f4b200) at tcp_connect+0x33a sys/netinet/tcp_usrreq.c:670 sys_connect(ffff80002a21ad50,ffff80002c284040,ffff80002c283f90) at sys_connect+0x207 sys/kern/uipc_syscalls.c:422 syscall(ffff80002c284040) at syscall+0x5ae mi_syscall sys/sys/syscall_mi.h:183 [inline] syscall(ffff80002c284040) at syscall+0x5ae sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3a2d0fa11b0, 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 "sin6tosa(&ro->ro_dst)->sa_family == AF_INET6" failed: file "/syzkaller/managers/setuid/kernel/sys/netinet6/in6_src.c", line 328 ddb{0}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82873283) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff828f938f,ffffffff82868107,148,ffffffff829481fe) at __assert+0x29 sys/kern/subr_prf.c:157 in6_selectroute(ffff80002c283ba0,ffff800000dfef80,fffffd806b7dae38,0) at in6_selectroute+0x228 sys/netinet6/in6_src.c:328 ip6_output(fffffd806d447700,ffff800000dfef80,fffffd806b7dae38,0,0,fffffd806b7daef8) at ip6_output+0xc6a sys/netinet6/ip6_output.c:467 tcp_output(ffff800000f78028) at tcp_output+0x2877 sys/netinet/tcp_output.c:1110 tcp_connect(fffffd80748b5020,fffffd8074f4b200) at tcp_connect+0x33a sys/netinet/tcp_usrreq.c:670 sys_connect(ffff80002a21ad50,ffff80002c284040,ffff80002c283f90) at sys_connect+0x207 sys/kern/uipc_syscalls.c:422 syscall(ffff80002c284040) at syscall+0x5ae mi_syscall sys/sys/syscall_mi.h:183 [inline] syscall(ffff80002c284040) at syscall+0x5ae sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3a2d0fa11b0, count: -10 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002c2839e0 rbx 0xffffffff82d39ca7 cpu_info_full_primary+0x2ca7 rdx 0xffff800000de2240 rcx 0xffff80002a21ad50 rax 0xffffffff82d38ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xeb76bea34a932d94 r11 0x7d51048fbc184ef8 r12 0xffffffff82d39aa8 cpu_info_full_primary+0x2aa8 r13 0 r14 0 r15 0x1 rip 0xffffffff81182e1c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002c2839d0 ss 0x10 db_enter+0x1c: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.5) tid=484637 pid=80260 tcnt=2 stat=onproc flags process=10 proc=4000000 runpri=32, usrpri=81, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a18dd60,0xffffffff82e83cf0 process=0xffff8000ffff79c8 user=0xffff80002c27f000, vmspace=0xfffffd806f16b8c8 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 80260 142359 67750 32767 2 0x10 syz-executor.5 *80260 484637 67750 32767 7 0x4000010 syz-executor.5 24778 3519 13563 32767 2 0x10 syz-executor.3 24778 93793 13563 32767 3 0x4000090 fsleep syz-executor.3 24778 447165 13563 32767 2 0x4000010 syz-executor.3 9115 363997 62464 32767 3 0x90 nanoslp syz-executor.0 9115 349791 62464 32767 3 0x4000090 fsleep syz-executor.0 9115 103589 62464 32767 3 0x4000090 kqread syz-executor.0 9115 498548 62464 32767 3 0x4000090 fsleep syz-executor.0 67750 158431 55871 32767 2 0x490 syz-executor.5 55871 5518 6762 0 3 0x82 wait syz-executor.5 7834 171517 83335 32767 3 0x90 nanoslp syz-executor.4 83335 360300 6762 0 3 0x82 wait syz-executor.4 62464 484584 84391 32767 3 0x90 nanoslp syz-executor.0 84391 63351 6762 0 3 0x82 wait syz-executor.0 77129 348309 5512 32767 2 0x490 syz-executor.1 5512 260017 6762 0 3 0x82 wait syz-executor.1 13563 166304 85229 32767 3 0x90 nanoslp syz-executor.3 85229 402920 6762 0 3 0x82 wait syz-executor.3 25456 212848 0 0 3 0x14200 bored sosplice 98326 42136 84421 32767 2 0x10 syz-executor.6 33133 84665 59602 32767 3 0x90 wait syz-executor.7 59602 126829 6762 0 3 0x82 wait syz-executor.7 49329 501377 72318 32767 7 0x10 syz-executor.2 84421 186211 6762 0 3 0x82 wait syz-executor.6 72318 162328 6762 0 3 0x82 wait syz-executor.2 6762 492002 54329 0 3 0x2000082 wait syz-fuzzer 6762 79823 54329 0 3 0x6000082 nanoslp syz-fuzzer 6762 412665 54329 0 3 0x6000082 thrsleep syz-fuzzer 6762 317154 54329 0 3 0x6000082 wait syz-fuzzer 6762 77589 54329 0 3 0x6000082 thrsleep syz-fuzzer 6762 448677 54329 0 3 0x6000082 thrsleep syz-fuzzer 6762 288567 54329 0 3 0x6000082 wait syz-fuzzer 6762 103274 54329 0 3 0x6000082 thrsleep syz-fuzzer 6762 470442 54329 0 3 0x6000082 wait syz-fuzzer 6762 199926 54329 0 3 0x6000082 thrsleep syz-fuzzer 6762 106650 54329 0 3 0x6000082 thrsleep syz-fuzzer 6762 462620 54329 0 3 0x6000082 wait syz-fuzzer 6762 347278 54329 0 3 0x6000082 wait syz-fuzzer 6762 142198 54329 0 3 0x6000082 kqread syz-fuzzer 6762 325074 54329 0 3 0x6000082 wait syz-fuzzer 6762 5054 54329 0 3 0x6000082 wait syz-fuzzer 54329 440289 86128 0 3 0x10008a sigsusp ksh 86128 3362 2972 0 3 0x9a kqread sshd 41513 224353 1 0 3 0x100083 ttyin getty 2972 510809 1 0 3 0x88 kqread sshd 76695 105023 8391 73 3 0x1100090 kqread syslogd 8391 471550 1 0 3 0x100082 netio syslogd 18052 514935 1 0 3 0x100080 kqread resolvd 47207 312793 33618 77 3 0x100092 kqread dhcpleased 17110 108954 33618 77 3 0x100092 kqread dhcpleased 33618 401368 1 0 3 0x80 kqread dhcpleased 15059 57170 0 0 3 0x14200 bored smr 11554 502585 0 0 2 0x14200 zerothread 89149 106509 0 0 3 0x14200 aiodoned aiodoned 38657 131285 0 0 3 0x14200 syncer update 62527 50274 0 0 3 0x14200 cleaner cleaner 5291 66219 0 0 3 0x14200 reaper reaper 78254 143361 0 0 3 0x14200 pgdaemon pagedaemon 15467 471260 0 0 3 0x14200 bored viomb 29938 236566 0 0 3 0x40014200 acpi0 acpi0 91925 462225 0 0 3 0x40014200 idle1 41615 45391 0 0 3 0x14200 bored softnet3 35842 260477 0 0 3 0x14200 bored softnet2 6034 162625 0 0 3 0x14200 bored softnet1 79167 168979 0 0 3 0x14200 bored softnet0 12882 32789 0 0 3 0x14200 bored systqmp 78222 253012 0 0 3 0x14200 bored systq 48410 87690 0 0 3 0x14200 tmoslp softclockmp 34829 368300 0 0 2 0x40014200 softclock 91322 216244 0 0 3 0x40014200 idle0 1 80848 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 80260 (syz-executor.5) thread 0xffff80002a21ad50 (484637) exclusive rwlock netlock r = 0 (0xffffffff82d02410) #0 witness_lock+0x447 #1 sys_connect+0x1be isdnssocket sys/kern/uipc_syscalls.c:127 [inline] #1 sys_connect+0x1be sys/kern/uipc_syscalls.c:413 #2 syscall+0x5ae mi_syscall sys/sys/syscall_mi.h:183 [inline] #2 syscall+0x5ae sys/arch/amd64/amd64/trap.c:577 #3 Xsyscall+0x128 Process 98326 (syz-executor.6) thread 0xffff80002a155ff8 (42136) exclusive rrwlock inode r = 0 (0xfffffd8079d532c8) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 ufs_ihashins+0x46 sys/ufs/ufs/ufs_ihash.c:140 #5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1343 #6 ffs_inode_alloc+0x1c2 sys/ufs/ffs/ffs_alloc.c:394 #7 ufs_mkdir+0xf8 sys/ufs/ufs/ufs_vnops.c:1145 #8 VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 #9 domkdirat+0x125 sys/kern/vfs_syscalls.c:3073 #10 syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline] #10 syscall+0x533 sys/arch/amd64/amd64/trap.c:577 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd80794ccf80) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0xd5 sys/kern/vfs_lookup.c:418 #6 namei+0x55a sys/kern/vfs_lookup.c:250 #7 domkdirat+0x79 sys/kern/vfs_syscalls.c:3058 #8 syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline] #8 syscall+0x533 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10224 6414K 6419K 166960K 11373 0 pcb 15 16K 18K 166960K 21 0 rtable 246 7K 7K 166960K 2107 0 pf 29 8K 8K 166960K 75 0 ifaddr 44 15K 16K 166960K 142 0 ifgroup 50 2K 2K 166960K 142 0 sysctl 4 1K 1K 166960K 4 0 counters 64 36K 36K 166960K 110 0 ioctlops 0 0K 2K 166960K 262 0 iov 0 0K 34K 166960K 1996 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1279 80K 80K 166960K 4235 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 187 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 3713 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 23 85K 117K 166960K 14237 0 sigio 0 0K 0K 166960K 382 0 proc 56 78K 103K 166960K 1931 0 subproc 104 6K 6K 166960K 403 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 1787 0 in_multi 99 7K 7K 166960K 503 0 ether_multi 1 0K 0K 166960K 12 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 325 1447K 1447K 166960K 325 0 exec 0 0K 1K 166960K 2521 0 tdb 3 0K 0K 166960K 3 0 pagedep 1 8K 8K 166960K 1 0 inodedep 1 32K 32K 166960K 1 0 newblk 1 0K 0K 166960K 1 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 433 89K 115K 166960K 142083 0 UVM aobj 131 4K 7K 166960K 140 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 2 0K 0K 166960K 407 0 NDP 11 0K 2K 166960K 96 0 temp 75 6712K 6840K 166960K 38783 0 kqueue 13 20K 28K 166960K 1350 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 24 0 0 1 0 1 1 0 8 0 rtpcb 120 999 0 996 10 9 1 3 0 8 0 rtentry 112 387 0 271 4 0 4 4 0 8 0 unpcb 144 13016 0 12999 105 104 1 8 0 8 0 syncache 320 222 0 222 28 28 0 1 0 8 0 tcpqe 32 226 0 226 25 25 0 1 0 8 0 tcpcb 808 8483 0 8320 163 146 17 19 0 8 0 arp 120 67 0 49 1 0 1 1 0 8 0 ipq 40 31 0 31 5 5 0 1 0 8 0 ipqe 40 388 0 388 5 5 0 1 0 8 0 inpcb 376 16276 0 16075 192 171 21 24 0 8 0 nd6 136 113 0 83 6 4 2 2 0 8 0 kcovpl 48 31 0 23 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1560 0 1071 36 5 31 31 0 8 0 art_table 32 1561 0 1071 4 0 4 4 0 8 0 art_node 16 386 0 280 1 0 1 1 0 8 0 sysvmsgpl 40 17 0 6 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 3709 0 3699 1 0 1 1 0 8 0 shmpl 112 137 0 9 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 19871 0 18402 93 0 93 93 0 8 0 ffsino 272 19871 0 18402 99 0 99 99 0 8 0 nchpl 144 38707 0 37066 63 0 63 63 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 131707 0 131706 3 2 1 2 0 8 0 percpumem 16 69 0 23 1 0 1 1 0 8 0 kstatmem 264 68 0 46 2 0 2 2 0 8 0 scxspl 216 118102 0 118102 52 51 1 8 1 8 1 plimitpl 152 2823 0 2800 22 21 1 2 0 8 0 sigapl 424 14491 0 14436 7 0 7 7 0 8 0 futexpl 64 115900 0 115897 2 1 1 1 0 8 0 knotepl 120 885 0 0 11 1 10 11 0 8 0 kqueuepl 216 4325 0 4251 73 68 5 8 0 8 0 pipepl 320 3172 0 3126 93 88 5 14 0 8 1 fdescpl 496 14472 0 14438 7 2 5 6 0 8 0 filepl 152 96249 0 95768 170 151 19 25 0 8 0 lockfpl 104 1622 0 1620 1 0 1 1 0 8 0 lockfspl 48 611 0 609 1 0 1 1 0 8 0 sessionpl 144 46 0 30 1 0 1 1 0 8 0 pgrppl 48 133 0 117 1 0 1 1 0 8 0 ucredpl 104 15789 0 15771 1 0 1 1 0 8 0 zombiepl 144 14440 0 14436 1 0 1 1 0 8 0 processpl 1136 14491 0 14436 5 0 5 5 0 8 0 procpl 680 40058 0 39982 17 9 8 9 0 8 0 sosppl 168 339 0 331 9 8 1 1 0 8 0 sockpl 488 31131 0 30910 533 505 28 43 0 8 0 mcl64k 65536 26 0 0 3 0 3 3 0 8 0 mcl16k 16384 17 0 0 3 0 3 3 0 8 0 mcl12k 12288 24 0 0 2 0 2 2 0 8 0 mcl9k 9216 19 0 0 2 0 2 2 0 8 0 mcl8k 8192 34 0 0 4 1 3 3 0 8 0 mcl4k 4096 58 0 0 5 1 4 4 0 8 0 mcl2k2 2112 14 0 0 1 0 1 1 0 8 0 mcl2k 2048 357 0 0 33 14 19 33 0 8 0 mtagpl 96 9 0 0 1 0 1 1 0 8 0 mbufpl 256 1620 0 0 68 0 68 68 0 8 0 bufpl 288 27988 0 21670 452 0 452 452 0 8 0 anonpl 24 1592546 0 1580669 197 98 99 115 0 186 0 amapchunkpl 152 466048 0 465108 153 112 41 53 0 158 0 amappl16 200 37667 0 37362 174 145 29 42 0 8 7 amappl15 192 42 0 40 1 0 1 1 0 8 0 amappl14 184 234 0 215 3 2 1 2 0 8 0 amappl13 176 77 0 76 1 0 1 1 0 8 0 amappl12 168 15462 0 15422 3 1 2 3 0 8 0 amappl11 160 56 0 43 1 0 1 1 0 8 0 amappl10 152 76 0 62 1 0 1 1 0 8 0 amappl9 144 380 0 379 1 0 1 1 0 8 0 amappl8 136 828 0 668 6 0 6 6 0 8 0 amappl7 128 296 0 271 2 0 2 2 0 8 0 amappl6 120 810 0 791 1 0 1 1 0 8 0 amappl5 112 404 0 396 1 0 1 1 0 8 0 amappl4 104 892 0 856 4 3 1 2 0 8 0 amappl3 96 87529 0 87422 4 0 4 4 0 8 0 amappl2 88 15714 0 15628 7 5 2 3 0 8 0 amappl1 80 60150 0 59624 22 9 13 22 0 8 0 amappl 88 140832 0 140564 9 2 7 8 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 72 139 0 9 3 0 3 3 0 8 0 uaddrrnd 24 14473 0 14439 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 14473 0 14439 1 0 1 1 0 8 0 vmmpekpl 168 114597 0 114521 4 0 4 4 0 8 0 vmmpepl 168 856204 0 853717 354 227 127 155 0 357 1 vmsppl 448 14472 0 14439 5 0 5 5 0 8 0 rwobjpl 56 222122 0 214603 122 11 111 113 0 8 0 pdppl 4096 28953 0 28878 521 440 81 93 0 8 6 pvpl 32 44965 0 0 363 0 363 363 0 265 0 pmappl 248 14472 0 14439 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1512 0 620 26 0 26 26 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82873283) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff828f938f,ffffffff82868107,148,ffffffff829481fe) at __assert+0x29 sys/kern/subr_prf.c:157 in6_selectroute(ffff80002c283ba0,ffff800000dfef80,fffffd806b7dae38,0) at in6_selectroute+0x228 sys/netinet6/in6_src.c:328 ip6_output(fffffd806d447700,ffff800000dfef80,fffffd806b7dae38,0,0,fffffd806b7daef8) at ip6_output+0xc6a sys/netinet6/ip6_output.c:467 tcp_output(ffff800000f78028) at tcp_output+0x2877 sys/netinet/tcp_output.c:1110 tcp_connect(fffffd80748b5020,fffffd8074f4b200) at tcp_connect+0x33a sys/netinet/tcp_usrreq.c:670 sys_connect(ffff80002a21ad50,ffff80002c284040,ffff80002c283f90) at sys_connect+0x207 sys/kern/uipc_syscalls.c:422 syscall(ffff80002c284040) at syscall+0x5ae mi_syscall sys/sys/syscall_mi.h:183 [inline] syscall(ffff80002c284040) at syscall+0x5ae sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3a2d0fa11b0, count: -10 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffff800029cfbff0) at x86_ipi_db+0x1e sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff82de4340) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82de4340) at __mp_lock+0x122 sys/kern/kern_lock.c:147 syscall(ffff8000325568a0) at syscall+0x51a mi_syscall sys/sys/syscall_mi.h:183 [inline] syscall(ffff8000325568a0) at syscall+0x51a sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x74db55d34e00, count: 9 ddb{1}> trace x86_ipi_db(ffff800029cfbff0) at x86_ipi_db+0x1e sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff82de4340) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82de4340) at __mp_lock+0x122 sys/kern/kern_lock.c:147 syscall(ffff8000325568a0) at syscall+0x51a mi_syscall sys/sys/syscall_mi.h:183 [inline] syscall(ffff8000325568a0) at syscall+0x51a sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x74db55d34e00, count: -6