panic: pool_do_get: pdppl free list modified: page 0xfffffd806a645000; item addr 0xfffffd806a645000; offset 0x0=0x11e57ed0 != 0xd2eec584e70eab7b Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *452252 42248 0 0x8000002 0 0K syz-executor.4 225974 1786 0 0x1a000002 0x4000001 1 syz-fuzzer db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82887876) at panic+0x17b sys/kern/subr_prf.c:198 pool_do_get(ffffffff82e52408,1,ffff80002d6cc398) at pool_do_get+0x443 pool_get(ffffffff82e52408,1) at pool_get+0xf0 sys/kern/subr_pool.c:582 pmap_create() at pmap_create+0xf6 sys/arch/amd64/amd64/pmap.c:1359 uvmspace_fork(ffff80002a18ec70) at uvmspace_fork+0x64 uvmspace_init sys/uvm/uvm_map.c:3302 [inline] uvmspace_fork(ffff80002a18ec70) at uvmspace_fork+0x64 uvmspace_alloc sys/uvm/uvm_map.c:3280 [inline] uvmspace_fork(ffff80002a18ec70) at uvmspace_fork+0x64 sys/uvm/uvm_map.c:3852 process_new(ffff8000ffff94a8,ffff80002a18ec70,1) at process_new+0x3dc sys/kern/kern_fork.c:278 fork1(ffff80002a22d740,1,ffffffff8224f5b0,0,ffff80002d6cc620,0) at fork1+0x2ef sys/kern/kern_fork.c:399 syscall(ffff80002d6cc6d0) at syscall+0x854 mi_syscall sys/sys/syscall_mi.h:180 [inline] syscall(ffff80002d6cc6d0) at syscall+0x854 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7d7d11f60c10, 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: pool_do_get: pdppl free list modified: page 0xfffffd806a645000; item addr 0xfffffd806a645000; offset 0x0=0x11e57ed0 != 0xd2eec584e70eab7b ddb{0}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82887876) at panic+0x17b sys/kern/subr_prf.c:198 pool_do_get(ffffffff82e52408,1,ffff80002d6cc398) at pool_do_get+0x443 pool_get(ffffffff82e52408,1) at pool_get+0xf0 sys/kern/subr_pool.c:582 pmap_create() at pmap_create+0xf6 sys/arch/amd64/amd64/pmap.c:1359 uvmspace_fork(ffff80002a18ec70) at uvmspace_fork+0x64 uvmspace_init sys/uvm/uvm_map.c:3302 [inline] uvmspace_fork(ffff80002a18ec70) at uvmspace_fork+0x64 uvmspace_alloc sys/uvm/uvm_map.c:3280 [inline] uvmspace_fork(ffff80002a18ec70) at uvmspace_fork+0x64 sys/uvm/uvm_map.c:3852 process_new(ffff8000ffff94a8,ffff80002a18ec70,1) at process_new+0x3dc sys/kern/kern_fork.c:278 fork1(ffff80002a22d740,1,ffffffff8224f5b0,0,ffff80002d6cc620,0) at fork1+0x2ef sys/kern/kern_fork.c:399 syscall(ffff80002d6cc6d0) at syscall+0x854 mi_syscall sys/sys/syscall_mi.h:180 [inline] syscall(ffff80002d6cc6d0) at syscall+0x854 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7d7d11f60c10, count: -10 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002d6cc1e0 rbx 0xffffffff82d1bcdf cpu_info_full_primary+0x2cdf rdx 0 rcx 0xffff80002a22d740 rax 0xffffffff82d1aff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x5b78e903876e00bd r11 0x87fbc7b9c732f197 r12 0xffffffff82d1bae0 cpu_info_full_primary+0x2ae0 r13 0 r14 0 r15 0x1 rip 0xffffffff8210c9bc db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002d6cc1d0 ss 0x10 db_enter+0x1c: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.4) tid=452252 pid=42248 tcnt=1 stat=onproc flags process=8000002 proc=0 runpri=17, usrpri=80, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff8000ffff8f88,0xffff80002a2042c0 process=0xffff80002a18ec70 user=0xffff80002d6c7000, vmspace=0xfffffd806b50c538 estcpu=36, cpticks=2, pctcpu=1.6, user=0, sys=2, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 60186 199008 65933 0 2 0x8000000 syz-executor.0 17403 313989 98901 0 2 0x8000000 syz-executor.2 17403 373553 98901 0 2 0xc000000 syz-executor.2 43827 306114 34720 0 2 0x8000000 syz-executor.5 91743 250584 35312 0 2 0x8000000 syz-executor.7 66894 298718 45809 0 2 0x8000000 syz-executor.6 84276 254354 53206 0 2 0x8000000 syz-executor.1 84276 70363 53206 0 3 0xc000080 fsleep syz-executor.1 504 378373 67005 0 2 0x8000000 syz-executor.3 504 290309 67005 0 2 0xc000000 syz-executor.3 91292 217693 1 0 3 0x18100083 ttyin getty 35312 429308 1786 0 3 0x8000082 nanoslp syz-executor.7 46690 8231 1 0 3 0x8000080 fsleep syz-executor.7 46690 165051 1 0 3 0xc000080 fifor syz-executor.7 98901 166682 1786 0 3 0x8000082 nanoslp syz-executor.2 45809 397013 1786 0 3 0x8000082 nanoslp syz-executor.6 *42248 452252 1786 0 7 0x8000002 syz-executor.4 34720 59910 1786 0 2 0x8000002 syz-executor.5 53206 508636 1786 0 3 0x8000082 nanoslp syz-executor.1 65933 468823 1786 0 3 0x8000082 nanoslp syz-executor.0 36488 163097 0 0 3 0x14200 bored sosplice 67005 140880 1786 0 3 0x8000082 nanoslp syz-executor.3 1786 300839 69535 0 3 0x1a000082 thrsleep syz-fuzzer 1786 450615 69535 0 3 0x1e000082 nanoslp syz-fuzzer 1786 329834 69535 0 3 0x1e000082 wait syz-fuzzer 1786 186742 69535 0 3 0x1e000082 wait syz-fuzzer 1786 474690 69535 0 3 0x1e000082 wait syz-fuzzer 1786 434012 69535 0 3 0x1e000082 wait syz-fuzzer 1786 441745 69535 0 3 0x1e000082 wait syz-fuzzer 1786 347802 69535 0 3 0x1e000082 thrsleep syz-fuzzer 1786 303010 69535 0 3 0x1e000082 thrsleep syz-fuzzer 1786 63713 69535 0 3 0x1e000082 thrsleep syz-fuzzer 1786 193687 69535 0 3 0x1e000082 thrsleep syz-fuzzer 1786 383987 69535 0 3 0x1e000082 wait syz-fuzzer 1786 37937 69535 0 3 0x1e000082 wait syz-fuzzer 1786 58196 69535 0 3 0x1e000082 thrsleep syz-fuzzer 1786 321394 69535 0 3 0x1e000082 wait syz-fuzzer 1786 225974 69535 0 7 0x1e000003 syz-fuzzer 69535 347077 97530 0 3 0x810008a sigsusp ksh 97530 445821 45234 0 3 0x1800009a kqread sshd 45234 162738 1 0 3 0x18000088 kqread sshd 5190 493737 84055 73 2 0x19100010 syslogd 84055 301939 1 0 3 0x18100082 sbwait syslogd 71981 160631 1 0 3 0x18100080 kqread resolvd 39642 178574 43254 77 3 0x18100092 kqread dhcpleased 87357 412969 43254 77 3 0x18100092 kqread dhcpleased 43254 466029 1 0 3 0x18000080 kqread dhcpleased 75638 385032 0 0 3 0x14200 bored smr 10052 455088 0 0 2 0x14200 zerothread 43097 178052 0 0 3 0x14200 aiodoned aiodoned 77092 206667 0 0 3 0x14200 syncer update 89893 110014 0 0 3 0x14200 cleaner cleaner 34922 375326 0 0 3 0x14200 reaper reaper 63514 466587 0 0 3 0x14200 pgdaemon pagedaemon 13342 499247 0 0 3 0x14200 bored viomb 46750 384569 0 0 3 0x40014200 acpi0 acpi0 25699 204375 0 0 3 0x40014200 idle1 54292 201041 0 0 3 0x14200 bored softnet3 7753 169224 0 0 3 0x14200 bored softnet2 96103 410154 0 0 3 0x14200 bored softnet1 41953 470045 0 0 3 0x14200 bored softnet0 9189 258371 0 0 3 0x14200 bored systqmp 98998 110738 0 0 3 0x14200 bored systq 53207 81927 0 0 3 0x14200 tmoslp softclockmp 63525 121179 0 0 3 0x40014200 tmoslp softclock 69381 266411 0 0 3 0x40014200 idle0 1 295116 0 0 3 0x8080082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex pdppl r = 0 (0xffffffff82e52418) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1187 #1 mtx_enter_try+0x103 #2 mtx_enter+0x4e sys/kern/kern_lock.c:266 #3 pool_get+0xc4 sys/kern/subr_pool.c:579 #4 pmap_create+0xf6 sys/arch/amd64/amd64/pmap.c:1359 #5 uvmspace_fork+0x64 uvmspace_init sys/uvm/uvm_map.c:3302 [inline] #5 uvmspace_fork+0x64 uvmspace_alloc sys/uvm/uvm_map.c:3280 [inline] #5 uvmspace_fork+0x64 sys/uvm/uvm_map.c:3852 #6 process_new+0x3dc sys/kern/kern_fork.c:278 #7 fork1+0x2ef sys/kern/kern_fork.c:399 #8 syscall+0x854 mi_syscall sys/sys/syscall_mi.h:180 [inline] #8 syscall+0x854 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 Process 42248 (syz-executor.4) thread 0xffff80002a22d740 (452252) exclusive rwlock vmmaplk r = 0 (0xfffffd806b50c628) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1187 #1 rw_enter+0x32d sys/kern/kern_rwlock.c:309 #2 vm_map_lock_ln+0xfa sys/uvm/uvm_map.c:5291 #3 uvmspace_fork+0x3b sys/uvm/uvm_map.c:3852 #4 process_new+0x3dc sys/kern/kern_fork.c:278 #5 fork1+0x2ef sys/kern/kern_fork.c:399 #6 syscall+0x854 mi_syscall sys/sys/syscall_mi.h:180 [inline] #6 syscall+0x854 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82e67e58) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1187 #1 syscall+0x83b mi_syscall sys/sys/syscall_mi.h:180 [inline] #1 syscall+0x83b sys/arch/amd64/amd64/trap.c:577 #2 Xsyscall+0x128 exclusive mutex pdppl r = 0 (0xffffffff82e52418) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1187 #1 mtx_enter_try+0x103 #2 mtx_enter+0x4e sys/kern/kern_lock.c:266 #3 pool_get+0xc4 sys/kern/subr_pool.c:579 #4 pmap_create+0xf6 sys/arch/amd64/amd64/pmap.c:1359 #5 uvmspace_fork+0x64 uvmspace_init sys/uvm/uvm_map.c:3302 [inline] #5 uvmspace_fork+0x64 uvmspace_alloc sys/uvm/uvm_map.c:3280 [inline] #5 uvmspace_fork+0x64 sys/uvm/uvm_map.c:3852 #6 process_new+0x3dc sys/kern/kern_fork.c:278 #7 fork1+0x2ef sys/kern/kern_fork.c:399 #8 syscall+0x854 mi_syscall sys/sys/syscall_mi.h:180 [inline] #8 syscall+0x854 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10218 6559K 6887K 166960K 13991 0 pcb 19 13K 14K 166960K 253 0 rtable 217 15K 15K 166960K 886 0 pf 32 9K 10K 166960K 99 0 ifaddr 40 14K 15K 166960K 116 0 ifgroup 57 2K 2K 166960K 153 0 sysctl 4 1K 2K 166960K 10 0 counters 66 36K 37K 166960K 118 0 ioctlops 0 0K 4K 166960K 1580 0 iov 0 0K 25K 166960K 98 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1536 96K 97K 166960K 2797 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 35 0 VM map 2 1K 1K 166960K 2 0 sem 12 1K 1K 166960K 78 0 dirhash 12 2K 2K 166960K 36 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 19 69K 89K 166960K 1772 0 sigio 1 0K 0K 166960K 25 0 proc 62 91K 115K 166960K 950 0 subproc 117 7K 7K 166960K 286 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 298 0 in_multi 83 6K 7K 166960K 305 0 ether_multi 1 0K 0K 166960K 24 0 mrt 1 0K 0K 166960K 9 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 681 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 269 87K 114K 166960K 18117 0 UVM aobj 35 2K 2K 166960K 41 0 pinsyscall 39 78K 100K 166960K 3289 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 130 0 NDP 12 0K 1K 166960K 80 0 temp 79 6820K 6943K 166960K 63806 0 kqueue 12 18K 28K 166960K 275 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 120 211 0 208 2 1 1 2 0 8 0 rtentry 112 282 0 185 5 1 4 4 0 8 0 unpcb 144 1491 0 1474 10 9 1 4 0 8 0 syncache 336 5 0 5 2 2 0 1 0 8 0 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 96 0 96 1 1 0 1 0 8 0 tcpcb 808 492 0 486 14 13 1 8 0 8 0 arp 120 46 0 30 1 0 1 1 0 8 0 inpcb 384 1825 0 1813 24 22 2 8 0 8 0 nd6 136 82 0 57 1 0 1 1 0 8 0 pkpcb 40 10 0 10 4 4 0 1 0 8 0 kcovpl 48 22 0 13 1 0 1 1 0 8 0 ppxss 1168 7 0 7 4 4 0 1 0 8 0 pffrag 232 2 0 2 1 1 0 1 0 482 0 pffrnode 88 2 0 2 1 1 0 1 0 8 0 pffrent 40 50 0 50 3 3 0 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 24 168 0 143 1 0 1 1 0 8 0 pfstkey 128 168 0 143 2 1 1 2 0 8 0 pfstate 376 168 0 143 6 2 4 5 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1071 0 670 37 11 26 29 0 8 0 art_table 32 1072 0 670 5 1 4 4 0 8 0 art_node 16 278 0 189 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 2 1 0 1 1 0 8 0 semapl 112 75 0 65 1 0 1 1 0 8 0 shmpl 112 38 0 6 1 0 1 1 0 8 0 dirhash 1024 33 0 16 3 0 3 3 0 8 0 dino2pl 256 4251 0 2733 96 0 96 96 0 8 0 ffsino 272 4251 0 2733 102 0 102 102 0 8 0 nchpl 144 6977 0 6388 67 41 26 67 0 8 0 uvmvnodes 80 5278 0 0 108 0 108 108 0 8 0 vnodes 216 5278 0 0 294 0 294 294 0 8 0 namei 1024 26034 0 26034 6 5 1 2 0 8 1 percpumem 16 73 0 26 1 0 1 1 0 8 0 vcpupl 3904 7 0 1 1 0 1 1 0 8 0 vmpool 696 20 0 14 1 0 1 1 0 8 0 kstatmem 264 76 0 52 2 0 2 2 0 8 0 scsiplug 72 6 0 6 6 6 0 1 0 8 0 scxspl 216 45355 0 45355 14 13 1 8 1 8 1 plimitpl 152 330 0 313 1 0 1 1 0 8 0 sigapl 424 2079 0 2030 8 1 7 8 0 8 0 futexpl 64 24440 0 24438 6 5 1 1 0 8 0 knotepl 120 747 0 0 18 0 18 18 0 8 0 kqueuepl 216 481 0 472 2 1 1 2 0 8 0 pipepl 320 507 0 478 14 11 3 8 0 8 0 fdescpl 496 2039 0 2009 7 2 5 5 0 8 0 filepl 152 14394 0 14131 34 23 11 16 0 8 0 lockfpl 104 535 0 533 1 0 1 1 0 8 0 lockfspl 48 181 0 179 1 0 1 1 0 8 0 sessionpl 144 38 0 21 1 0 1 1 0 8 0 pgrppl 48 70 0 53 1 0 1 1 0 8 0 ucredpl 104 2683 0 2672 1 0 1 1 0 8 0 zombiepl 144 2030 0 2030 2 1 1 1 0 8 1 processpl 1136 2079 0 2030 6 1 5 6 0 8 0 procpl 656 4274 0 4206 9 0 9 9 0 8 0 srpgc 96 14 0 14 5 5 0 1 0 8 0 sosppl 168 22 0 22 7 6 1 1 0 8 1 sockpl 664 3597 0 3565 36 33 3 11 0 8 0 mcl64k 65536 1 0 0 1 0 1 1 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 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 6 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 352 0 0 38 2 36 38 0 8 1 mtagpl 96 25 0 0 1 0 1 1 0 8 0 mbufpl 256 518 0 0 27 0 27 27 0 8 0 bufpl 280 11401 0 2561 632 0 632 632 0 8 0 anonpl 24 385604 0 379573 148 81 67 95 0 186 7 amapchunkpl 152 60982 0 60337 88 47 41 51 0 158 9 amappl16 200 8091 0 7958 48 38 10 20 0 8 0 amappl15 192 6 0 6 1 1 0 1 0 8 0 amappl14 184 242 0 230 2 1 1 2 0 8 0 amappl13 176 15 0 15 1 1 0 1 0 8 0 amappl12 168 2982 0 2951 2 0 2 2 0 8 0 amappl11 160 81 0 71 1 0 1 1 0 8 0 amappl10 152 67 0 57 2 1 1 1 0 8 0 amappl9 144 185 0 185 2 2 0 1 0 8 0 amappl8 136 176 0 141 2 0 2 2 0 8 0 amappl7 128 76 0 61 1 0 1 1 0 8 0 amappl6 120 499 0 485 2 1 1 2 0 8 0 amappl5 112 225 0 213 1 0 1 1 0 8 0 amappl4 104 610 0 578 2 1 1 2 0 8 0 amappl3 96 11576 0 11503 3 0 3 3 0 8 0 amappl2 88 2520 0 2448 4 2 2 4 0 8 0 amappl1 80 15586 0 15092 22 10 12 22 0 8 0 amappl 88 17346 0 17161 6 0 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 40 0 6 1 0 1 1 0 8 0 uaddrrnd 24 2059 0 2024 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2059 0 2024 1 0 1 1 0 8 0 vmmpekpl 168 19448 0 19389 4 1 3 4 0 8 0 vmmpepl 168 143083 0 141188 149 57 92 114 0 357 0 vmsppl 440 2059 0 2024 5 1 4 5 0 8 0 rwobjpl 56 45050 0 38653 97 6 91 91 0 8 0 pdppl 4096 4125 0 4054 190 117 73 77 0 8 2 pdppl: pool(0xffffffff82e52408:pdppl): free list modified: page 0xfffffd806a645000; item ordinal 0; addr 0xfffffd806a645000 (p 0xfffffd80697a5000); offset 0x0=0x11e57ed0 pool(pdppl): free list modified: page 0xfffffd806a645000; item ordinal 0; addr 0xfffffd806a645000 (p 0xfffffd80697a5000); offset 0x0=0x0 pdppl: pool(0xffffffff82e52408:pdppl): page inconsistency: page 0xfffffd806a645000; item ordinal 1; addr 0xa508c7bcaca44edd pvpl 32 48655 0 0 393 0 393 393 0 265 0 pmappl 248 2059 0 2024 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 527 0 156 11 0 11 11 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(ffffffff82887876) at panic+0x17b sys/kern/subr_prf.c:198 pool_do_get(ffffffff82e52408,1,ffff80002d6cc398) at pool_do_get+0x443 pool_get(ffffffff82e52408,1) at pool_get+0xf0 sys/kern/subr_pool.c:582 pmap_create() at pmap_create+0xf6 sys/arch/amd64/amd64/pmap.c:1359 uvmspace_fork(ffff80002a18ec70) at uvmspace_fork+0x64 uvmspace_init sys/uvm/uvm_map.c:3302 [inline] uvmspace_fork(ffff80002a18ec70) at uvmspace_fork+0x64 uvmspace_alloc sys/uvm/uvm_map.c:3280 [inline] uvmspace_fork(ffff80002a18ec70) at uvmspace_fork+0x64 sys/uvm/uvm_map.c:3852 process_new(ffff8000ffff94a8,ffff80002a18ec70,1) at process_new+0x3dc sys/kern/kern_fork.c:278 fork1(ffff80002a22d740,1,ffffffff8224f5b0,0,ffff80002d6cc620,0) at fork1+0x2ef sys/kern/kern_fork.c:399 syscall(ffff80002d6cc6d0) at syscall+0x854 mi_syscall sys/sys/syscall_mi.h:180 [inline] syscall(ffff80002d6cc6d0) at syscall+0x854 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7d7d11f60c10, count: -10 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffff800029cebff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x1c kd_curproc sys/dev/kcov.c:588 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x1c sys/dev/kcov.c:158 __mp_lock(ffffffff82e67c50) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82e67c50) at __mp_lock+0x133 sys/kern/kern_lock.c:147 ktrstruct(ffff80002a22c7e0,ffffffff8286d406,ffff8000373c0758,10) at ktrstruct+0xd9 sys/kern/kern_ktrace.c:307 sys_kevent(ffff80002a22c7e0,ffff8000373c08e0,ffff8000373c0830) at sys_kevent+0x14a sys/kern/kern_event.c:1001 syscall(ffff8000373c08e0) at syscall+0x8cf mi_syscall sys/sys/syscall_mi.h:180 [inline] syscall(ffff8000373c08e0) at syscall+0x8cf sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2b18513c0, count: 6 ddb{1}> trace x86_ipi_db(ffff800029cebff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x1c kd_curproc sys/dev/kcov.c:588 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x1c sys/dev/kcov.c:158 __mp_lock(ffffffff82e67c50) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82e67c50) at __mp_lock+0x133 sys/kern/kern_lock.c:147 ktrstruct(ffff80002a22c7e0,ffffffff8286d406,ffff8000373c0758,10) at ktrstruct+0xd9 sys/kern/kern_ktrace.c:307 sys_kevent(ffff80002a22c7e0,ffff8000373c08e0,ffff8000373c0830) at sys_kevent+0x14a sys/kern/kern_event.c:1001 syscall(ffff8000373c08e0) at syscall+0x8cf mi_syscall sys/sys/syscall_mi.h:180 [inline] syscall(ffff8000373c08e0) at syscall+0x8cf sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2b18513c0, count: -9