panic: pool_cache_item_magic_check: mbufpl cpu free list modified: item addr 0xfffffd8063bbd900+24 0x2d1d6d99b36c75b8!=0x2d1d6d19d76facb8 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 396061 67680 0 0x2 0 1 syz-executor.0 * 96568 51258 0 0x12 0 0 sshd db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff8240de67) at panic+0x164 sys/kern/subr_prf.c:218 pool_cache_get(ffffffff82936538) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline] pool_cache_get(ffffffff82936538) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884 pool_get(ffffffff82936538,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_copym(fffffd8063775c00,147c,bc,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] m_copym(fffffd8063775c00,147c,bc,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667 tcp_output(ffff800000ad8980) at tcp_output+0x15ba sys/netinet/tcp_output.c:673 tcp_usrreq(fffffd806eae5c88,9,fffffd8063ba3200,0,0,ffff800020e40870) at tcp_usrreq+0xa55 sosend(fffffd806eae5c88,0,ffff800020e626e8,0,0,80) at sosend+0x671 sys/kern/uipc_socket.c:555 dofilewritev(ffff800020e40870,4,ffff800020e626e8,0,ffff800020e627d0) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_write(ffff800020e40870,ffff800020e62780,ffff800020e627d0) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800020e62850) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e62850) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd7ef0, count: 3 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 pool_cache_item_magic_check: mbufpl cpu free list modified: item addr 0xfffffd8063bbd900+24 0x2d1d6d99b36c75b8!=0x2d1d6d19d76facb8 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff8240de67) at panic+0x164 sys/kern/subr_prf.c:218 pool_cache_get(ffffffff82936538) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline] pool_cache_get(ffffffff82936538) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884 pool_get(ffffffff82936538,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_copym(fffffd8063775c00,147c,bc,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] m_copym(fffffd8063775c00,147c,bc,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667 tcp_output(ffff800000ad8980) at tcp_output+0x15ba sys/netinet/tcp_output.c:673 tcp_usrreq(fffffd806eae5c88,9,fffffd8063ba3200,0,0,ffff800020e40870) at tcp_usrreq+0xa55 sosend(fffffd806eae5c88,0,ffff800020e626e8,0,0,80) at sosend+0x671 sys/kern/uipc_socket.c:555 dofilewritev(ffff800020e40870,4,ffff800020e626e8,0,ffff800020e627d0) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_write(ffff800020e40870,ffff800020e62780,ffff800020e627d0) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800020e62850) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e62850) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd7ef0, count: -12 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800020e62080 rbx 0xffff800020e62130 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffff800020e62040 r9 0xffffffff817bd10f kprintf+0x16f r10 0x1 r11 0x6bc29529b4d19e63 r12 0x3000000008 r13 0xffff800020e62090 r14 0x100 r15 0x1 rip 0xffffffff821dd518 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020e62070 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (sshd) pid=96568 stat=onproc flags process=12 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020e3f4f0,0xffff800020e3fec0 process=0xffff8000ffffe7d8 user=0xffff800020e5d000, vmspace=0xfffffd806e903008 estcpu=0, cpticks=2, pctcpu=0.1 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 67680 396061 95032 0 7 0x2 syz-executor.0 67192 446860 0 0 3 0x14280 nfsidl nfsio 81331 484898 0 0 3 0x14280 nfsidl nfsio 94428 397640 0 0 3 0x14280 nfsidl nfsio 13778 504413 0 0 3 0x14280 nfsidl nfsio 13413 211171 0 0 3 0x14280 nfsidl nfsio 25218 519784 0 0 3 0x14280 nfsidl nfsio 53129 430665 0 0 3 0x14280 nfsidl nfsio 97353 215951 0 0 3 0x14280 nfsidl nfsio 62365 337206 0 0 3 0x14280 nfsidl nfsio 13216 90505 0 0 3 0x14280 nfsidl nfsio 92191 377823 0 0 3 0x14280 nfsidl nfsio 61004 203652 0 0 3 0x14280 nfsidl nfsio 87686 143932 0 0 3 0x14280 nfsidl nfsio 71399 103918 0 0 3 0x14280 nfsidl nfsio 18434 61292 0 0 3 0x14280 nfsidl nfsio 68687 361811 0 0 3 0x14280 nfsidl nfsio 94445 495476 0 0 3 0x14280 nfsidl nfsio 18692 505153 0 0 3 0x14280 nfsidl nfsio 93837 2837 0 0 3 0x14280 nfsidl nfsio 94435 297804 0 0 3 0x14280 nfsidl nfsio 28781 100795 0 0 3 0x14200 acct acct 23671 127410 0 0 3 0x14200 bored sosplice 6931 410192 95032 0 3 0x82 piperd syz-executor.1 95032 375038 77544 0 3 0x82 thrsleep syz-fuzzer 95032 84885 77544 0 3 0x4000082 nanosleep syz-fuzzer 95032 6388 77544 0 2 0x4000002 syz-fuzzer 95032 161188 77544 0 3 0x4000082 thrsleep syz-fuzzer 95032 101445 77544 0 3 0x4000082 thrsleep syz-fuzzer 95032 304000 77544 0 3 0x4000082 thrsleep syz-fuzzer 95032 321771 77544 0 3 0x4000082 thrsleep syz-fuzzer 95032 258443 77544 0 3 0x4000082 kqread syz-fuzzer 77544 436242 51258 0 3 0x10008a pause ksh *51258 96568 98229 0 7 0x12 sshd 81927 260222 1 0 3 0x100083 ttyin getty 98229 106329 1 0 3 0x80 select sshd 30904 521678 15612 74 3 0x100092 bpf pflogd 15612 93429 1 0 3 0x80 netio pflogd 37961 410313 75902 73 3 0x100090 kqread syslogd 75902 465548 1 0 3 0x100082 netio syslogd 61028 12683 1 77 3 0x100090 poll dhclient 39214 108842 1 0 3 0x80 poll dhclient 87419 26636 0 0 3 0x14200 bored smr 8025 197753 0 0 2 0x14200 zerothread 61764 212529 0 0 3 0x14200 aiodoned aiodoned 94586 172987 0 0 3 0x14200 syncer update 70501 275075 0 0 3 0x14200 cleaner cleaner 55271 476261 0 0 3 0x14200 reaper reaper 66049 359532 0 0 3 0x14200 pgdaemon pagedaemon 21147 202698 0 0 3 0x14200 bored crynlk 92478 394070 0 0 3 0x14200 bored crypto 56503 447342 0 0 3 0x40014200 acpi0 acpi0 72559 264581 0 0 3 0x40014200 idle1 84706 484189 0 0 3 0x14200 bored softnet 5840 438352 0 0 3 0x14200 bored systqmp 24076 470969 0 0 3 0x14200 bored systq 74449 110495 0 0 3 0x40014200 bored softclock 74362 108167 0 0 3 0x40014200 idle0 1 460612 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 1: exclusive mutex softnet r = 0 (0xffff80000002c028) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 mtx_enter_try+0x102 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 taskq_next_work+0x33 sys/kern/kern_task.c:394 #4 taskq_thread+0x135 sys/kern/kern_task.c:434 #5 proc_trampoline+0x1c Process 51258 (sshd) thread 0xffff800020e40870 (96568) exclusive rwlock netlock r = 0 (0xffffffff826f8418) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 solock+0x5a sys/kern/uipc_socket2.c:282 #2 sosend+0x559 sys/kern/uipc_socket.c:543 #3 dofilewritev+0x1b6 sys/kern/sys_generic.c:365 #4 sys_write+0x83 sys/kern/sys_generic.c:285 #5 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #5 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #6 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9518 6422K 6800K 78643K 11438 0 pcb 13 8K 8K 78643K 121 0 rtable 116 4K 8K 78643K 611 0 ifaddr 78 15K 17K 78643K 217 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 73 0 ioctlops 0 0K 4K 78643K 1706 0 iov 0 0K 16K 78643K 1197 0 mount 1 1K 1K 78643K 1 0 vnodes 1213 76K 77K 78643K 1534 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 7 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 167 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 4 9K 25K 78643K 845 0 sigio 0 0K 0K 78643K 12 0 proc 62 63K 83K 78643K 567 0 subproc 32 2K 2K 78643K 68 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 61 0 in_multi 81 4K 4K 78643K 191 0 ether_multi 1 0K 0K 78643K 17 0 mrt 0 0K 0K 78643K 9 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 61 281K 281K 78643K 61 0 exec 0 0K 1K 78643K 299 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 174 76K 76K 78643K 3830 0 UVM aobj 36 2K 2K 78643K 41 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 86 0 NDP 12 0K 0K 78643K 47 0 temp 134 3867K 3938K 78643K 9847 0 kqueue 3 4K 12K 78643K 54 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 arp 64 12 0 5 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 56 0 54 1 0 1 1 0 8 0 rtentry 112 108 0 61 2 0 2 2 0 8 0 unpcb 120 432 0 422 1 0 1 1 0 8 0 syncache 264 5 0 5 2 2 0 1 0 8 0 tcpcb 544 255 0 246 4 2 2 2 0 8 1 inpcb 296 891 0 884 3 1 2 2 0 8 1 rttmr 72 6 0 6 3 3 0 1 0 8 0 nd6 48 27 0 20 1 0 1 1 0 8 0 ppxss 1136 3 0 3 2 2 0 1 0 8 0 pfstscr 40 4 0 4 1 1 0 1 0 8 0 pffrag 232 4 0 4 3 3 0 1 0 482 0 pffrnode 88 4 0 4 3 3 0 1 0 8 0 pffrent 40 53 0 53 3 3 0 1 0 8 0 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrke_plain 160 9 0 9 2 2 0 1 0 8 0 pfrktable 1344 62 0 62 4 4 0 1 0 8 0 pfstitem 24 18 0 11 1 0 1 1 0 8 0 pfstkey 112 21 0 14 1 0 1 1 0 8 0 pfstate 328 19 0 12 2 0 2 2 0 8 0 pfrule 1360 37 0 36 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 335 0 138 16 3 13 14 0 8 0 art_table 32 336 0 138 2 0 2 2 0 8 0 art_node 16 107 0 65 1 0 1 1 0 8 0 sysvmsgpl 40 13 0 8 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 161 0 151 1 0 1 1 0 8 0 shmpl 112 38 0 5 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2741 0 1338 89 1 88 89 0 8 0 ffsino 272 2741 0 1338 94 0 94 94 0 8 0 nchpl 144 4371 0 2772 60 0 60 60 0 8 0 uvmvnodes 72 3025 0 0 55 0 55 55 0 8 0 vnodes 208 3025 0 0 160 0 160 160 0 8 0 namei 1024 12542 0 12542 1 0 1 1 0 8 1 percpumem 16 47 0 15 1 0 1 1 0 8 0 vcpupl 1984 5 0 0 1 0 1 1 0 8 0 vmpool 560 7 0 2 2 1 1 1 0 8 0 pfiaddrpl 120 19 0 19 4 4 0 1 0 8 0 scsiplug 64 4 0 4 1 0 1 1 0 8 1 scxspl 192 12688 0 12687 13 12 1 7 0 8 0 plimitpl 152 53 0 45 1 0 1 1 0 8 0 sigapl 424 1076 0 1024 8 1 7 7 0 8 1 futexpl 56 13965 0 13965 1 0 1 1 0 8 1 knotepl 112 147 0 127 1 0 1 1 0 8 0 kqueuepl 144 125 0 123 1 0 1 1 0 8 0 pipepl 304 191 0 180 2 0 2 2 0 8 0 fdescpl 496 1039 0 1024 3 0 3 3 0 8 0 filepl 152 6481 0 6378 6 1 5 6 0 8 1 lockfpl 104 2220 0 2219 1 0 1 1 0 8 0 lockfspl 48 913 0 912 1 0 1 1 0 8 0 sessionpl 112 20 0 9 1 0 1 1 0 8 0 pgrppl 48 35 0 24 1 0 1 1 0 8 0 ucredpl 96 453 0 444 1 0 1 1 0 8 0 zombiepl 144 1024 0 1024 1 0 1 1 0 8 1 processpl 992 1076 0 1024 7 0 7 7 0 8 0 procpl 624 2912 0 2853 6 1 5 6 0 8 0 srpgc 64 2 0 2 1 1 0 1 0 8 0 sosppl 128 13 0 13 2 2 0 1 0 8 0 sockpl 400 1383 0 1364 5 2 3 4 0 8 1 mcl64k 65536 10 0 0 2 0 2 2 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 14 0 0 2 0 2 2 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 8 0 0 1 0 1 1 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 191 0 0 23 0 23 23 0 8 0 mtagpl 96 27 0 0 1 0 1 1 0 8 0 mbufpl 256 498 0 0 30 0 30 30 0 8 0 mbufpl: pool(0xffffffff82936538:mbufpl): free list modified: page 0xfffffd806f311000; item ordinal 0; addr 0xfffffd806f311c00 (p 0xfffffd806f2a5000); offset 0x0=0xeef4310000000000 bufpl 280 4999 0 127 348 0 348 348 0 8 0 anonpl 16 130714 0 112837 94 17 77 91 0 124 0 amapchunkpl 152 7073 0 6734 27 13 14 27 0 158 0 amappl16 192 4840 0 3950 62 16 46 56 0 8 0 amappl15 184 4 0 2 1 0 1 1 0 8 0 amappl14 176 74 0 72 1 0 1 1 0 8 0 amappl13 168 259 0 256 1 0 1 1 0 8 0 amappl12 160 239 0 234 1 0 1 1 0 8 0 amappl11 152 125 0 109 1 0 1 1 0 8 0 amappl10 144 14 0 12 1 0 1 1 0 8 0 amappl9 136 556 0 555 1 0 1 1 0 8 0 amappl8 128 583 0 545 2 0 2 2 0 8 0 amappl7 120 139 0 126 1 0 1 1 0 8 0 amappl6 112 33 0 26 1 0 1 1 0 8 0 amappl5 104 907 0 892 1 0 1 1 0 8 0 amappl4 96 592 0 561 1 0 1 1 0 8 0 amappl3 88 236 0 225 1 0 1 1 0 8 0 amappl2 80 7491 0 7427 2 0 2 2 0 8 0 amappl1 72 41205 0 40777 23 13 10 18 0 8 0 amappl 80 3228 0 3145 2 0 2 2 0 84 0 dma4096 4096 1 0 1 1 1 0 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 64 40 0 5 1 0 1 1 0 8 0 uaddrrnd 24 1046 0 1026 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1046 0 1026 1 0 1 1 0 8 0 vmmpekpl 168 10728 0 10683 3 0 3 3 0 8 0 vmmpepl 168 142156 0 140151 169 40 129 129 0 357 31 vmsppl 368 1045 0 1026 2 0 2 2 0 8 0 pdppl 4096 2099 0 2057 6 0 6 6 0 8 0 pvpl 32 384354 0 363532 213 33 180 210 0 265 1 pmappl 232 1045 0 1026 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 291 0 12 8 0 8 8 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:398 panic(ffffffff8240de67) at panic+0x164 sys/kern/subr_prf.c:218 pool_cache_get(ffffffff82936538) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline] pool_cache_get(ffffffff82936538) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884 pool_get(ffffffff82936538,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_copym(fffffd8063775c00,147c,bc,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] m_copym(fffffd8063775c00,147c,bc,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667 tcp_output(ffff800000ad8980) at tcp_output+0x15ba sys/netinet/tcp_output.c:673 tcp_usrreq(fffffd806eae5c88,9,fffffd8063ba3200,0,0,ffff800020e40870) at tcp_usrreq+0xa55 sosend(fffffd806eae5c88,0,ffff800020e626e8,0,0,80) at sosend+0x671 sys/kern/uipc_socket.c:555 dofilewritev(ffff800020e40870,4,ffff800020e626e8,0,ffff800020e627d0) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_write(ffff800020e40870,ffff800020e62780,ffff800020e627d0) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800020e62850) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e62850) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd7ef0, count: -12 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020d70ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff828ec9f0) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828ec9f0) at __mp_lock+0x127 sys/kern/kern_lock.c:147 pageflttrap(ffff80002218f140,1) at pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 usertrap(ffff80002218f140) at usertrap+0x21a sys/arch/amd64/amd64/trap.c:384 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7ffffdcab0, count: 8 ddb{1}> trace x86_ipi_db(ffff800020d70ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff828ec9f0) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828ec9f0) at __mp_lock+0x127 sys/kern/kern_lock.c:147 pageflttrap(ffff80002218f140,1) at pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 usertrap(ffff80002218f140) at usertrap+0x21a sys/arch/amd64/amd64/trap.c:384 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7ffffdcab0, count: -7