panic: pool_do_get: art_heap4 free list modified: page 0xfffffd8067a27000; item addr 0xfffffd8067a27b00; offset 0x0=0x0 != 0xa57a7d9056836fc8 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *380929 61287 0 0 0x4000000 0K syz-executor.4 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8263e415) at panic+0x177 sys/kern/subr_prf.c:202 pool_do_get(ffffffff829eb950,a,ffff80002446bb18) at pool_do_get+0x436 sys/kern/subr_pool.c:740 pool_get(ffffffff829eb950,a) at pool_get+0xe9 sys/kern/subr_pool.c:584 art_table_get(ffff800000c17600,fffffd807d970d00,10) at art_table_get+0x129 sys/net/art.c:721 art_insert(ffff800000c17600,fffffd807b5ca990,ffff800000bfd9c8,80) at art_insert+0x14a sys/net/art.c:386 rtable_insert(6,ffff800000bfd9c0,0,ffff800000d2e8c0,1,fffffd807da077f8) at rtable_insert+0x2e5 sys/net/rtable.c:598 rtrequest(1,ffff80002446be30,1,ffff80002446bef8,6) at rtrequest+0x89b sys/net/route.c:946 rt_ifa_add(ffff800000e43a00,240404,ffff800000e43a40,6) at rt_ifa_add+0x260 sys/net/route.c:1137 rt_ifa_addlocal(ffff800000e43a00) at rt_ifa_addlocal+0x163 sys/net/route.c:1245 in6_update_ifa(ffff800000c34000,ffff80002446c3a0,0) at in6_update_ifa+0x129e sys/netinet6/in6.c:729 in6_ioctl_change_ifaddr(8080691a,ffff80002446c3a0,ffff800000c34000) at in6_ioctl_change_ifaddr+0x481 sys/netinet6/in6.c:358 ifioctl(fffffd807b367d38,8080691a,ffff80002446c3a0,ffff80002448efc8) at ifioctl+0xdf4 sys/net/if.c:2264 soo_ioctl(fffffd806622f860,8080691a,ffff80002446c3a0,ffff80002448efc8) at soo_ioctl+0x26c end trace frame: 0xffff80002446c4a0, count: 0 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: pool_do_get: art_heap4 free list modified: page 0xfffffd8067a27000; item addr 0xfffffd8067a27b00; offset 0x0=0x0 != 0xa57a7d9056836fc8 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8263e415) at panic+0x177 sys/kern/subr_prf.c:202 pool_do_get(ffffffff829eb950,a,ffff80002446bb18) at pool_do_get+0x436 sys/kern/subr_pool.c:740 pool_get(ffffffff829eb950,a) at pool_get+0xe9 sys/kern/subr_pool.c:584 art_table_get(ffff800000c17600,fffffd807d970d00,10) at art_table_get+0x129 sys/net/art.c:721 art_insert(ffff800000c17600,fffffd807b5ca990,ffff800000bfd9c8,80) at art_insert+0x14a sys/net/art.c:386 rtable_insert(6,ffff800000bfd9c0,0,ffff800000d2e8c0,1,fffffd807da077f8) at rtable_insert+0x2e5 sys/net/rtable.c:598 rtrequest(1,ffff80002446be30,1,ffff80002446bef8,6) at rtrequest+0x89b sys/net/route.c:946 rt_ifa_add(ffff800000e43a00,240404,ffff800000e43a40,6) at rt_ifa_add+0x260 sys/net/route.c:1137 rt_ifa_addlocal(ffff800000e43a00) at rt_ifa_addlocal+0x163 sys/net/route.c:1245 in6_update_ifa(ffff800000c34000,ffff80002446c3a0,0) at in6_update_ifa+0x129e sys/netinet6/in6.c:729 in6_ioctl_change_ifaddr(8080691a,ffff80002446c3a0,ffff800000c34000) at in6_ioctl_change_ifaddr+0x481 sys/netinet6/in6.c:358 ifioctl(fffffd807b367d38,8080691a,ffff80002446c3a0,ffff80002448efc8) at ifioctl+0xdf4 sys/net/if.c:2264 soo_ioctl(fffffd806622f860,8080691a,ffff80002446c3a0,ffff80002448efc8) at soo_ioctl+0x26c sys_ioctl(ffff80002448efc8,ffff80002446c4b8,ffff80002446c510) at sys_ioctl+0x4a2 syscall(ffff80002446c580) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002446c580) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf9fbb31390, count: -17 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002446b960 rbx 0xffffffff82932c5f cpu_info_full_primary+0x2c5f rdx 0xffff800000c77700 rcx 0 rax 0xffff80002448efc8 r8 0x101010101010101 r9 0x8080808080808080 r10 0xc20ffb16d71ebbee r11 0x8fad948f3fd96378 r12 0xffffffff82932a60 cpu_info_full_primary+0x2a60 r13 0 r14 0 r15 0x1 rip 0xffffffff811d3698 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80002446b950 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.4) pid=380929 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff80002448f268,0xffffffff829ec468 process=0xffff800024ebb620 user=0xffff800024467000, vmspace=0xfffffd80705518b0 estcpu=36, cpticks=2, pctcpu=0.0 user=0, sys=2, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 61287 61002 35088 0 2 0 syz-executor.4 *61287 380929 35088 0 7 0x4000000 syz-executor.4 62601 185644 63582 0 2 0 syz-executor.0 9682 520528 74900 0 2 0 syz-executor.7 9682 245782 74900 0 3 0x4000080 fsleep syz-executor.7 43312 217838 78148 0 2 0 syz-executor.6 52365 126337 88539 0 2 0 syz-executor.2 88539 183054 50347 0 3 0x82 nanoslp syz-executor.2 74900 356665 50347 0 3 0x82 nanoslp syz-executor.7 8098 212537 50347 0 3 0x82 nanoslp syz-executor.5 63943 470066 0 0 3 0x14200 acct acct 63582 209160 50347 0 3 0x82 nanoslp syz-executor.0 64541 276889 1 0 3 0x100083 ttyopn getty 78148 374137 50347 0 3 0x82 nanoslp syz-executor.6 35088 212744 50347 0 3 0x82 nanoslp syz-executor.4 49132 294946 50347 0 3 0x82 nanoslp syz-executor.1 8969 104651 50347 0 3 0x82 nanoslp syz-executor.3 23052 226200 0 0 3 0x14280 nfsidl nfsio 87832 372350 0 0 3 0x14280 nfsidl nfsio 84862 165832 0 0 3 0x14280 nfsidl nfsio 37180 307958 0 0 3 0x14280 nfsidl nfsio 33467 115691 0 0 3 0x14280 nfsidl nfsio 83696 500083 0 0 3 0x14280 nfsidl nfsio 96387 126271 0 0 3 0x14280 nfsidl nfsio 66424 43799 0 0 3 0x14280 nfsidl nfsio 84395 85832 0 0 3 0x14280 nfsidl nfsio 55628 215172 0 0 3 0x14280 nfsidl nfsio 13304 465718 0 0 3 0x14280 nfsidl nfsio 86496 210389 0 0 3 0x14280 nfsidl nfsio 86607 270453 0 0 3 0x14280 nfsidl nfsio 45225 126219 0 0 3 0x14280 nfsidl nfsio 58871 86096 0 0 3 0x14280 nfsidl nfsio 54290 157797 0 0 3 0x14280 nfsidl nfsio 78598 370399 0 0 3 0x14280 nfsidl nfsio 67151 393405 0 0 3 0x14280 nfsidl nfsio 50647 403172 0 0 3 0x14280 nfsidl nfsio 4168 210185 0 0 3 0x14280 nfsidl nfsio 6569 353234 0 0 3 0x14200 bored sosplice 50347 236757 62840 0 3 0x82 kqread syz-fuzzer 50347 148764 62840 0 3 0x4000082 thrsleep syz-fuzzer 50347 448007 62840 0 3 0x4000082 thrsleep syz-fuzzer 50347 56557 62840 0 3 0x4000082 thrsleep syz-fuzzer 50347 516609 62840 0 3 0x4000082 thrsleep syz-fuzzer 50347 422124 62840 0 3 0x4000082 thrsleep syz-fuzzer 50347 302562 62840 0 3 0x4000082 thrsleep syz-fuzzer 50347 460300 62840 0 3 0x4000082 thrsleep syz-fuzzer 50347 117306 62840 0 3 0x4000082 thrsleep syz-fuzzer 62840 89738 75747 0 3 0x10008a sigsusp ksh 75747 173677 10462 0 3 0x9a kqread sshd 10462 159810 1 0 3 0x88 kqread sshd 91676 324495 51353 74 3 0x1100092 bpf pflogd 51353 205984 1 0 3 0x80 netio pflogd 48396 243751 86940 73 3 0x1100090 kqread syslogd 86940 40911 1 0 3 0x100082 netio syslogd 4044 88265 1 0 3 0x100080 kqread resolvd 81960 444533 77026 77 3 0x100092 kqread dhcpleased 67416 253412 77026 77 3 0x100092 kqread dhcpleased 77026 365211 1 0 3 0x80 kqread dhcpleased 50353 81003 0 0 3 0x14200 bored smr 65031 263635 0 0 2 0x14200 zerothread 98830 248556 0 0 3 0x14200 aiodoned aiodoned 69266 427525 0 0 3 0x14200 syncer update 13253 13322 0 0 3 0x14200 cleaner cleaner 40316 318407 0 0 3 0x14200 reaper reaper 87238 94606 0 0 3 0x14200 pgdaemon pagedaemon 50621 140720 0 0 3 0x14200 bored viomb 88450 186848 0 0 3 0x40014200 acpi0 acpi0 12655 481278 0 0 7 0x40014200 idle1 68730 82057 0 0 3 0x14200 bored softnet 12407 294906 0 0 3 0x14200 bored softnet 66560 64081 0 0 3 0x14200 bored softnet 66165 61743 0 0 3 0x14200 bored softnet 59479 320848 0 0 3 0x14200 bored systqmp 48770 75680 0 0 3 0x14200 bored systq 4725 364251 0 0 3 0x40014200 bored softclock 95060 42679 0 0 3 0x40014200 idle0 1 312940 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10249 6586K 6958K 78643K 34973 0 pcb 13 20K 24K 78643K 1317 0 rtable 216 21K 21K 78643K 2892 0 ifaddr 97 22K 23K 78643K 1359 0 sysctl 3 1K 1K 78643K 3 0 counters 56 35K 36K 78643K 342 0 ioctlops 0 0K 8K 78643K 4753 0 iov 0 0K 36K 78643K 2222 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1364 85K 86K 78643K 8269 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 113 0 VM map 2 1K 1K 78643K 2 0 sem 17 2K 3K 78643K 117 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 15 53K 89K 78643K 14396 0 sigio 0 0K 0K 78643K 206 0 proc 72 91K 128K 78643K 1691 0 subproc 104 6K 7K 78643K 480 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 391 0 in_multi 78 5K 6K 78643K 809 0 ether_multi 1 0K 0K 78643K 68 0 mrt 1 0K 0K 78643K 28 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 295 1314K 1314K 78643K 295 0 exec 0 0K 2K 78643K 2639 0 tdb 3 0K 0K 78643K 3 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 463 843K 843K 78643K 81917 0 UVM aobj 135 4K 4K 78643K 138 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 562 0 NDP 15 0K 2K 78643K 280 0 temp 218 4888K 5896K 78643K 197790 0 kqueue 12 18K 26K 78643K 1199 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 1213 0 1210 17 15 2 3 0 8 1 rtentry 112 579 0 500 4 1 3 4 0 8 0 unpcb 136 7573 0 7557 67 66 1 6 0 8 0 syncache 296 173 0 173 17 16 1 1 0 8 1 tcpqe 32 25 55 25 5 5 0 1 0 8 0 tcpcb 736 5735 0 5720 149 144 5 20 0 8 3 arp 120 79 0 67 1 0 1 1 0 8 0 inpcb 312 25136 0 25121 219 214 5 19 0 8 3 nd6 48 160 0 142 1 0 1 1 0 8 0 pkpcb 40 21 0 21 4 4 0 1 0 8 0 kcovpl 48 30 0 22 1 0 1 1 0 8 0 ppxss 1248 56 0 56 13 13 0 1 0 8 0 pfstscr 40 13 0 13 2 2 0 1 0 8 0 pffrag 232 82 0 79 4 3 1 1 0 482 0 pffrnode 88 82 0 79 4 3 1 1 0 8 0 pffrent 40 323 0 320 4 3 1 1 0 8 0 pfosfp 40 1494 0 1070 5 0 5 5 0 8 0 pfosfpen 112 1494 0 779 21 0 21 21 0 8 0 pfrktable 1344 302 0 290 3 1 2 2 0 8 0 pftag 88 77 0 69 1 0 1 1 0 8 0 pfqueue 264 4 0 4 1 1 0 1 0 8 0 pfstitem 24 57 0 54 1 0 1 1 0 8 0 pfstkey 112 73 0 70 1 0 1 1 0 8 0 pfstate 336 63 0 60 3 2 1 3 0 8 0 pfrule 1360 461 0 420 6 2 4 4 0 8 0 rttmr 64 7 0 7 2 2 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 2322 0 1908 39 13 26 30 0 8 0 art_heap4: pool(0xffffffff829eb950:art_heap4): free list modified: page 0xfffffd8067a27000; item ordinal 0; addr 0xfffffd8067a27b00 (p 0xfffffd8062f18000); offset 0x0=0x0 pool(art_heap4): free list modified: page 0xfffffd8067a27000; item ordinal 0; addr 0xfffffd8067a27b00 (p 0xfffffd8062f18000); offset 0x0=0x0 art_heap4: pool(0xffffffff829eb950:art_heap4): page inconsistency: page 0xfffffd8067a27000; item ordinal 1; addr 0x532c986b8796008a art_table 32 2324 0 1908 5 1 4 4 0 8 0 art_node 16 571 0 501 1 0 1 1 0 8 0 sysvmsgpl 40 31 0 13 1 0 1 1 0 8 0 semupl 112 3 0 3 2 2 0 1 0 8 0 semapl 112 105 0 90 1 0 1 1 0 8 0 shmpl 112 135 0 7 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 19836 0 18385 91 0 91 91 0 8 0 ffsino 272 19836 0 18385 98 0 98 98 0 8 0 nchpl 144 38366 0 36724 63 0 63 63 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 135021 0 135021 5 4 1 2 0 8 1 percpumem 16 183 0 143 1 0 1 1 0 8 0 vcpupl 2048 63 0 1 8 0 8 8 0 8 0 vmpool 560 104 0 42 8 3 5 5 0 8 0 pfiaddrpl 120 104 0 85 2 1 1 1 0 8 0 kstatmem 264 316 0 286 3 0 3 3 0 8 0 scsiplug 72 13 0 13 5 5 0 1 0 8 0 scxspl 216 113285 0 113285 26 25 1 8 0 8 1 plimitpl 152 1497 0 1482 1 0 1 1 0 8 0 sigapl 424 14756 0 14686 11 3 8 8 0 8 0 futexpl 64 144831 0 144830 3 2 1 1 0 8 0 knotepl 120 808 0 0 10 0 10 10 0 8 0 kqueuepl 216 3570 0 3561 63 62 1 5 0 8 0 pipepl 336 2465 0 2437 50 47 3 8 0 8 0 fdescpl 496 14656 0 14628 5 0 5 5 0 8 0 filepl 152 102971 0 102728 160 148 12 21 0 8 1 lockfpl 104 4628 0 4626 11 10 1 2 0 8 0 lockfspl 48 1183 0 1181 1 0 1 1 0 8 0 sessionpl 144 48 0 31 1 0 1 1 0 8 0 pgrppl 48 69 0 52 1 0 1 1 0 8 0 ucredpl 96 11511 0 11498 1 0 1 1 0 8 0 zombiepl 144 14689 0 14686 1 0 1 1 0 8 0 processpl 1064 14756 0 14686 5 0 5 5 0 8 0 procpl 672 38256 0 38176 28 20 8 9 0 8 0 srpgc 96 29 0 29 11 11 0 1 0 8 0 sosppl 168 94 0 93 15 14 1 1 0 8 0 sockpl 480 34033 0 33999 552 542 10 35 0 8 4 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 17 0 0 3 1 2 3 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 6 0 0 1 0 1 1 0 8 0 mcl8k 8192 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 9 0 0 1 0 1 1 0 8 0 mcl2k 2048 195 0 0 21 1 20 21 0 8 0 mtagpl 96 746 0 0 17 0 17 17 0 8 0 mbufpl 256 7500 0 0 434 1 433 433 0 8 0 bufpl 288 25504 0 19172 453 0 453 453 0 8 0 anonpl 24 2953077 0 2933220 373 236 137 156 0 186 0 amapchunkpl 152 237528 0 236877 80 49 31 43 0 158 0 amappl16 200 51169 0 50320 249 201 48 60 0 8 0 amappl15 192 5028 0 5026 1 0 1 1 0 8 0 amappl14 184 1305 0 1301 1 0 1 1 0 8 0 amappl13 176 891 0 889 1 0 1 1 0 8 0 amappl12 168 776 0 771 1 0 1 1 0 8 0 amappl11 160 3430 0 3410 3 1 2 2 0 8 0 amappl10 152 1637 0 1631 1 0 1 1 0 8 0 amappl9 144 2002 0 1997 1 0 1 1 0 8 0 amappl8 136 2608 0 2492 5 0 5 5 0 8 0 amappl7 128 1505 0 1490 1 0 1 1 0 8 0 amappl6 120 1906 0 1881 2 1 1 2 0 8 0 amappl5 112 13215 0 13197 1 0 1 1 0 8 0 amappl4 104 7440 0 7405 5 4 1 2 0 8 0 amappl3 96 43213 0 43170 2 0 2 2 0 8 0 amappl2 88 16223 0 16163 3 1 2 3 0 8 0 amappl1 80 351876 0 351280 21 6 15 20 0 8 0 amappl 88 80521 0 80303 7 1 6 6 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 72 137 0 3 3 0 3 3 0 8 0 uaddrrnd 24 14760 0 14670 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 14760 0 14670 1 0 1 1 0 8 0 vmmpekpl 168 97561 0 97481 5 1 4 5 0 8 0 vmmpepl 168 1422840 0 1419945 372 220 152 165 0 357 7 vmsppl 368 14759 0 14670 10 1 9 9 0 8 0 rwobjpl 56 361574 0 353589 144 29 115 118 0 8 0 pdppl 4096 29527 0 29402 580 449 131 131 0 8 6 pvpl 32 5741894 0 5720512 629 436 193 260 0 265 0 pmappl 248 14759 0 14670 6 0 6 6 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 2185 0 881 39 1 38 38 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8263e415) at panic+0x177 sys/kern/subr_prf.c:202 pool_do_get(ffffffff829eb950,a,ffff80002446bb18) at pool_do_get+0x436 sys/kern/subr_pool.c:740 pool_get(ffffffff829eb950,a) at pool_get+0xe9 sys/kern/subr_pool.c:584 art_table_get(ffff800000c17600,fffffd807d970d00,10) at art_table_get+0x129 sys/net/art.c:721 art_insert(ffff800000c17600,fffffd807b5ca990,ffff800000bfd9c8,80) at art_insert+0x14a sys/net/art.c:386 rtable_insert(6,ffff800000bfd9c0,0,ffff800000d2e8c0,1,fffffd807da077f8) at rtable_insert+0x2e5 sys/net/rtable.c:598 rtrequest(1,ffff80002446be30,1,ffff80002446bef8,6) at rtrequest+0x89b sys/net/route.c:946 rt_ifa_add(ffff800000e43a00,240404,ffff800000e43a40,6) at rt_ifa_add+0x260 sys/net/route.c:1137 rt_ifa_addlocal(ffff800000e43a00) at rt_ifa_addlocal+0x163 sys/net/route.c:1245 in6_update_ifa(ffff800000c34000,ffff80002446c3a0,0) at in6_update_ifa+0x129e sys/netinet6/in6.c:729 in6_ioctl_change_ifaddr(8080691a,ffff80002446c3a0,ffff800000c34000) at in6_ioctl_change_ifaddr+0x481 sys/netinet6/in6.c:358 ifioctl(fffffd807b367d38,8080691a,ffff80002446c3a0,ffff80002448efc8) at ifioctl+0xdf4 sys/net/if.c:2264 soo_ioctl(fffffd806622f860,8080691a,ffff80002446c3a0,ffff80002448efc8) at soo_ioctl+0x26c sys_ioctl(ffff80002448efc8,ffff80002446c4b8,ffff80002446c510) at sys_ioctl+0x4a2 syscall(ffff80002446c580) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002446c580) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf9fbb31390, count: -17 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020cd8ff0) at x86_ipi_db+0x1a 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+0x23 acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800020cd8ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff800020cd8ff0) at x86_ipi_db+0x1a 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+0x23 acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800020cd8ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: -5