panic: pool_do_get: fdescpl free list modified: page 0xfffffd80697b1000; item addr 0xfffffd80697b17c0; offset 0x48=0xdeafbeaf Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *414840 97569 0 0x2 0 1K syz-executor.0 58073 26423 0 0x2000002 0x4000000 0 syz-fuzzer db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82811846) at panic+0x17b sys/kern/subr_prf.c:198 pool_do_get(ffffffff82c63b10,9,ffff8000373d0218) at pool_do_get+0x484 sys/kern/subr_pool.c:739 pool_get(ffffffff82c63b10,9) at pool_get+0xed sys/kern/subr_pool.c:582 fdcopy(ffff8000ffff0448) at fdcopy+0x48 fdinit sys/kern/kern_descrip.c:1067 [inline] fdcopy(ffff8000ffff0448) at fdcopy+0x48 sys/kern/kern_descrip.c:1106 process_new(ffff80002a2527f0,ffff8000ffff0448,1) at process_new+0x2bc sys/kern/kern_fork.c:258 fork1(ffff80002a2692b0,1,ffffffff8256aba0,0,ffff8000373d0470,0) at fork1+0x318 sys/kern/kern_fork.c:384 syscall(ffff8000373d04d0) at syscall+0x42c sys/arch/amd64/amd64/trap.c:591 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x72fa6dc01440, count: 6 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: pool_do_get: fdescpl free list modified: page 0xfffffd80697b1000; item addr 0xfffffd80697b17c0; offset 0x48=0xdeafbeaf ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82811846) at panic+0x17b sys/kern/subr_prf.c:198 pool_do_get(ffffffff82c63b10,9,ffff8000373d0218) at pool_do_get+0x484 sys/kern/subr_pool.c:739 pool_get(ffffffff82c63b10,9) at pool_get+0xed sys/kern/subr_pool.c:582 fdcopy(ffff8000ffff0448) at fdcopy+0x48 fdinit sys/kern/kern_descrip.c:1067 [inline] fdcopy(ffff8000ffff0448) at fdcopy+0x48 sys/kern/kern_descrip.c:1106 process_new(ffff80002a2527f0,ffff8000ffff0448,1) at process_new+0x2bc sys/kern/kern_fork.c:258 fork1(ffff80002a2692b0,1,ffffffff8256aba0,0,ffff8000373d0470,0) at fork1+0x318 sys/kern/kern_fork.c:384 syscall(ffff8000373d04d0) at syscall+0x42c sys/arch/amd64/amd64/trap.c:591 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x72fa6dc01440, count: -9 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff8000373d0060 rbx 0xffff800029d2cba7 rdx 0 rcx 0xffff80002a2692b0 rax 0xffff800029d2bff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x8b8866042789dfd r11 0xfea03f331106f824 r12 0xffff800029d2c9a8 r13 0 r14 0 r15 0x1 rip 0xffffffff81d4536c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff8000373d0050 ss 0x10 db_enter+0x1c: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.0) tid=414840 pid=97569 tcnt=1 stat=onproc flags process=2 proc=0 runpri=82, usrpri=82, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a252548,0xffff80002a26a2b0 process=0xffff8000ffff0448 user=0xffff8000373cb000, vmspace=0xfffffd807369aaf8 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 20039 112193 15443 0 2 0 syz-executor.4 76930 37893 63324 0 2 0 syz-executor.2 56150 353006 3535 0 2 0 syz-executor.1 85140 513943 40528 0 3 0x1000080 fsleep syz-executor.3 85140 288504 40528 0 3 0x5000000 fdlock syz-executor.3 83849 53883 66881 0 3 0x80 fsleep syz-executor.5 83849 256976 66881 0 3 0x4000080 netio syz-executor.5 87126 146411 14891 0 3 0x80 fsleep syz-executor.6 87126 368307 14891 0 3 0x4000080 kqread syz-executor.6 63324 57605 26423 0 3 0x82 nanoslp syz-executor.2 40528 510403 26423 0 3 0x82 nanoslp syz-executor.3 *97569 414840 26423 0 7 0x2 syz-executor.0 33595 92188 26423 0 2 0x2 syz-executor.7 3535 446382 26423 0 3 0x82 nanoslp syz-executor.1 77974 304308 0 0 3 0x14200 bored sosplice 66881 501741 26423 0 2 0x2 syz-executor.5 14891 36648 26423 0 2 0x2 syz-executor.6 15443 225930 26423 0 2 0x2 syz-executor.4 26423 111548 87570 0 3 0x2000082 thrsleep syz-fuzzer 26423 423911 87570 0 3 0x6000082 nanoslp syz-fuzzer 26423 327168 87570 0 3 0x6000082 thrsleep syz-fuzzer 26423 74688 87570 0 2 0x6000082 syz-fuzzer 26423 174241 87570 0 3 0x6000082 wait syz-fuzzer 26423 58073 87570 0 7 0x6000002 syz-fuzzer 26423 146784 87570 0 3 0x6000082 thrsleep syz-fuzzer 26423 244827 87570 0 3 0x6000082 wait syz-fuzzer 26423 320622 87570 0 3 0x6000082 wait syz-fuzzer 26423 423347 87570 0 3 0x6000082 wait syz-fuzzer 26423 326673 87570 0 3 0x6000082 thrsleep syz-fuzzer 26423 369816 87570 0 3 0x6000082 wait syz-fuzzer 26423 450575 87570 0 3 0x6000082 wait syz-fuzzer 26423 80127 87570 0 3 0x6000082 wait syz-fuzzer 26423 18484 87570 0 3 0x6000082 wait syz-fuzzer 26423 19036 87570 0 3 0x6000082 kqread syz-fuzzer 87570 86607 28185 0 3 0x10008a sigsusp ksh 28185 274188 65910 0 3 0x9a kqread sshd 86956 439864 1 0 3 0x100083 ttyin getty 65910 277865 1 0 3 0x88 kqread sshd 32957 509273 47448 74 3 0x1100092 bpf pflogd 47448 373565 1 0 3 0x80 netio pflogd 15592 454584 87736 73 3 0x1100090 kqread syslogd 87736 241258 1 0 3 0x100082 netio syslogd 20392 340513 1 0 3 0x100080 kqread resolvd 70058 508463 92478 77 3 0x100092 kqread dhcpleased 23980 199382 92478 77 3 0x100092 kqread dhcpleased 92478 283717 1 0 3 0x80 kqread dhcpleased 57980 302495 0 0 3 0x14200 bored smr 55911 161268 0 0 2 0x14200 zerothread 96977 245857 0 0 3 0x14200 aiodoned aiodoned 9443 519486 0 0 3 0x14200 syncer update 50235 171516 0 0 3 0x14200 cleaner cleaner 37497 366920 0 0 3 0x14200 reaper reaper 95762 229598 0 0 3 0x14200 pgdaemon pagedaemon 42175 36198 0 0 3 0x14200 bored viomb 87265 72737 0 0 3 0x40014200 acpi0 acpi0 96923 54616 0 0 3 0x40014200 idle1 81326 3686 0 0 3 0x14200 bored softnet3 81379 261653 0 0 3 0x14200 bored softnet2 21146 377826 0 0 3 0x14200 bored softnet1 45259 444138 0 0 3 0x14200 bored softnet0 62473 220125 0 0 3 0x14200 bored systqmp 19623 112175 0 0 3 0x14200 bored systq 53027 131240 0 0 3 0x14200 tmoslp softclockmp 15676 224435 0 0 3 0x40014200 tmoslp softclock 88415 420633 0 0 3 0x40014200 idle0 1 96334 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive mutex fdescpl r = 0 (0xffffffff82c63b20) #0 witness_lock+0x447 #1 mtx_enter_try+0x104 #2 mtx_enter+0x4f sys/kern/kern_lock.c:266 #3 pool_get+0xc1 sys/kern/subr_pool.c:579 #4 fdcopy+0x48 fdinit sys/kern/kern_descrip.c:1067 [inline] #4 fdcopy+0x48 sys/kern/kern_descrip.c:1106 #5 process_new+0x2bc sys/kern/kern_fork.c:258 #6 fork1+0x318 sys/kern/kern_fork.c:384 #7 syscall+0x42c sys/arch/amd64/amd64/trap.c:591 #8 Xsyscall+0x128 Process 85140 (syz-executor.3) thread 0xffff80002a269d50 (288504) exclusive rwlock sysctllk r = 0 (0xffffffff82bdbd90) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 sys_sysctl+0x1c3 sys/kern/kern_sysctl.c:238 #3 syscall+0x42c sys/arch/amd64/amd64/trap.c:591 #4 Xsyscall+0x128 Process 97569 (syz-executor.0) thread 0xffff80002a2692b0 (414840) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82ca5ab0) #0 witness_lock+0x447 #1 syscall+0x412 mi_syscall sys/sys/syscall_mi.h:103 [inline] #1 syscall+0x412 sys/arch/amd64/amd64/trap.c:591 #2 Xsyscall+0x128 exclusive mutex fdescpl r = 0 (0xffffffff82c63b20) #0 witness_lock+0x447 #1 mtx_enter_try+0x104 #2 mtx_enter+0x4f sys/kern/kern_lock.c:266 #3 pool_get+0xc1 sys/kern/subr_pool.c:579 #4 fdcopy+0x48 fdinit sys/kern/kern_descrip.c:1067 [inline] #4 fdcopy+0x48 sys/kern/kern_descrip.c:1106 #5 process_new+0x2bc sys/kern/kern_fork.c:258 #6 fork1+0x318 sys/kern/kern_fork.c:384 #7 syscall+0x42c sys/arch/amd64/amd64/trap.c:591 #8 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10205 6614K 7150K 166960K 16099 0 pcb 15 12K 12K 166960K 129 0 rtable 212 6K 6K 166960K 557 0 pf 30 9K 10K 166960K 109 0 ifaddr 41 15K 15K 166960K 97 0 ifgroup 51 2K 2K 166960K 159 0 sysctl 3 0K 0K 166960K 3 0 counters 62 36K 36K 166960K 120 0 ioctlops 0 0K 4K 166960K 1609 0 iov 0 0K 16K 166960K 322 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1469 92K 92K 166960K 3216 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 151 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 441 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 16 57K 85K 166960K 5483 0 sigio 0 0K 0K 166960K 114 0 proc 70 91K 128K 166960K 859 0 subproc 104 6K 6K 166960K 182 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 59 0 in_multi 88 6K 7K 166960K 190 0 ether_multi 1 0K 0K 166960K 4 0 mrt 1 0K 0K 166960K 4 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 67 307K 307K 166960K 67 0 exec 0 0K 1K 166960K 650 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 379 151K 155K 166960K 55094 0 UVM aobj 131 4K 4K 166960K 131 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 56 0 NDP 11 0K 0K 166960K 68 0 temp 76 5935K 6004K 166960K 34147 0 kqueue 13 20K 24K 166960K 246 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> 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 120 188 0 185 2 1 1 2 0 8 0 rtentry 112 181 0 82 4 0 4 4 0 8 0 unpcb 144 10757 0 10740 125 119 6 10 0 8 5 syncache 312 27 0 27 9 8 1 1 0 8 1 tcpqe 32 286 0 286 8 7 1 1 0 8 1 tcpcb 808 672 0 663 38 34 4 8 0 8 3 arp 120 32 0 16 1 0 1 1 0 8 0 inpcb 368 2298 0 2285 83 76 7 8 0 8 5 nd6 136 42 0 21 1 0 1 1 0 8 0 pkpcb 40 4 0 4 1 1 0 1 0 8 0 kcovpl 48 14 0 6 1 0 1 1 0 8 0 ppxss 1256 9 0 9 3 3 0 1 0 8 0 pffrag 232 7 0 6 5 4 1 1 0 482 0 pffrnode 88 7 0 6 5 4 1 1 0 8 0 pffrent 40 14 0 13 5 4 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 83 0 75 1 0 1 1 0 8 0 pfstkey 128 83 0 75 1 0 1 1 0 8 0 pfstate 376 83 0 75 3 2 1 3 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 256 724 0 314 33 7 26 29 0 8 0 art_table 32 725 0 314 4 0 4 4 0 8 0 art_node 16 180 0 91 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 4 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 439 0 429 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 8519 0 7060 92 0 92 92 0 8 0 ffsino 272 8519 0 7060 98 0 98 98 0 8 0 nchpl 144 16665 0 15016 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 48904 0 48904 21 20 1 2 0 8 1 percpumem 16 74 0 29 1 0 1 1 0 8 0 vcpupl 2048 20 0 0 3 0 3 3 0 8 0 vmpool 696 24 0 4 2 0 2 2 0 8 0 kstatmem 264 80 0 58 2 0 2 2 0 8 0 scxspl 216 120973 0 120973 10 9 1 8 1 8 1 plimitpl 152 1045 0 1029 1 0 1 1 0 8 0 sigapl 424 5799 0 5751 8 1 7 7 0 8 0 futexpl 64 46664 0 46661 40 39 1 1 0 8 0 knotepl 120 613 0 0 14 4 10 10 0 8 0 kqueuepl 216 670 0 661 16 15 1 8 0 8 0 pipepl 320 586 0 558 18 11 7 8 0 8 4 fdescpl 496 5779 0 5750 9 5 4 5 0 8 0 pool(0xffffffff82c63b10:fdescpl): page inconsistency: page 0xfffffd80697b1000; 0 on list, 7 missing, 8 items per page filepl 152 32506 0 32263 162 144 18 21 0 8 8 lockfpl 104 1095 0 1093 4 3 1 2 0 8 0 lockfspl 48 456 0 454 1 0 1 1 0 8 0 sessionpl 144 30 0 13 1 0 1 1 0 8 0 pgrppl 48 59 0 42 1 0 1 1 0 8 0 ucredpl 104 2101 0 2089 1 0 1 1 0 8 0 zombiepl 144 5751 0 5751 1 0 1 1 0 8 1 processpl 1072 5800 0 5751 4 0 4 4 0 8 0 procpl 680 14993 0 14926 19 11 8 8 0 8 1 srpgc 96 7 0 7 3 3 0 1 0 8 0 sosppl 168 18 0 18 5 5 0 1 0 8 0 sockpl 488 13249 0 13216 527 506 21 35 0 8 15 mcl64k 65536 26 0 0 4 2 2 3 0 8 0 mcl16k 16384 15 0 0 2 0 2 2 0 8 0 mcl12k 12288 20 0 0 2 0 2 2 0 8 0 mcl9k 9216 7 0 0 1 0 1 1 0 8 0 mcl8k 8192 12 0 0 2 0 2 2 0 8 0 mcl4k 4096 34 0 0 4 1 3 3 0 8 0 mcl2k2 2112 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 621 0 0 37 22 15 34 0 8 1 mtagpl 96 194 0 0 5 0 5 5 0 8 0 mbufpl 256 1073 0 0 26 0 26 26 0 8 0 bufpl 288 12267 0 5946 452 0 452 452 0 8 0 anonpl 24 1065193 0 1050697 183 67 116 147 0 186 0 amapchunkpl 152 235146 0 234298 141 96 45 52 0 158 0 amappl16 200 13948 0 13495 63 37 26 41 0 8 0 amappl15 192 23 0 22 2 1 1 1 0 8 0 amappl14 184 191 0 172 3 1 2 2 0 8 0 amappl13 176 47 0 46 1 0 1 1 0 8 0 amappl12 168 6480 0 6449 3 1 2 2 0 8 0 amappl11 160 66 0 52 1 0 1 1 0 8 0 amappl10 152 43 0 30 1 0 1 1 0 8 0 amappl9 144 240 0 239 1 0 1 1 0 8 0 amappl8 136 324 0 236 4 0 4 4 0 8 0 amappl7 128 308 0 279 2 0 2 2 0 8 0 amappl6 120 364 0 353 1 0 1 1 0 8 0 amappl5 112 215 0 203 1 0 1 1 0 8 0 amappl4 104 699 0 671 2 1 1 2 0 8 0 amappl3 96 34766 0 34687 3 0 3 3 0 8 0 amappl2 88 6349 0 6274 3 1 2 3 0 8 0 amappl1 80 28846 0 28290 23 10 13 23 0 8 0 amappl 88 54117 0 53888 9 2 7 7 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 72 130 0 0 3 0 3 3 0 8 0 uaddrrnd 24 5803 0 5754 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 5803 0 5754 1 0 1 1 0 8 0 vmmpekpl 168 46245 0 46192 3 0 3 3 0 8 0 vmmpepl 168 352438 0 350032 217 102 115 137 0 357 0 vmsppl 464 5802 0 5754 12 5 7 7 0 8 0 rwobjpl 56 94525 0 86890 121 12 109 113 0 8 0 pdppl 4096 11614 0 11528 471 381 90 90 0 8 4 pvpl 32 45274 0 0 367 1 366 366 0 265 0 pmappl 248 5802 0 5754 5 1 4 4 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1404 0 567 24 0 24 24 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffffffff82b96ff0) 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(ffffffff82ca58a8) at __mp_lock+0x129 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82ca58a8) at __mp_lock+0x129 sys/kern/kern_lock.c:147 intr_handler(ffff80002a246ec0,ffff80000027b600) at intr_handler+0x62 sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge25_untramp() at Xintr_ioapic_edge25_untramp+0x18f end of kernel end trace frame: 0xc0000564c0, count: 9 ddb{0}> trace x86_ipi_db(ffffffff82b96ff0) 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(ffffffff82ca58a8) at __mp_lock+0x129 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82ca58a8) at __mp_lock+0x129 sys/kern/kern_lock.c:147 intr_handler(ffff80002a246ec0,ffff80000027b600) at intr_handler+0x62 sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge25_untramp() at Xintr_ioapic_edge25_untramp+0x18f end of kernel end trace frame: 0xc0000564c0, count: -6 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x1c: addq $0x8,%rsp db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82811846) at panic+0x17b sys/kern/subr_prf.c:198 pool_do_get(ffffffff82c63b10,9,ffff8000373d0218) at pool_do_get+0x484 sys/kern/subr_pool.c:739 pool_get(ffffffff82c63b10,9) at pool_get+0xed sys/kern/subr_pool.c:582 fdcopy(ffff8000ffff0448) at fdcopy+0x48 fdinit sys/kern/kern_descrip.c:1067 [inline] fdcopy(ffff8000ffff0448) at fdcopy+0x48 sys/kern/kern_descrip.c:1106 process_new(ffff80002a2527f0,ffff8000ffff0448,1) at process_new+0x2bc sys/kern/kern_fork.c:258 fork1(ffff80002a2692b0,1,ffffffff8256aba0,0,ffff8000373d0470,0) at fork1+0x318 sys/kern/kern_fork.c:384 syscall(ffff8000373d04d0) at syscall+0x42c sys/arch/amd64/amd64/trap.c:591 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x72fa6dc01440, count: 6 ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82811846) at panic+0x17b sys/kern/subr_prf.c:198 pool_do_get(ffffffff82c63b10,9,ffff8000373d0218) at pool_do_get+0x484 sys/kern/subr_pool.c:739 pool_get(ffffffff82c63b10,9) at pool_get+0xed sys/kern/subr_pool.c:582 fdcopy(ffff8000ffff0448) at fdcopy+0x48 fdinit sys/kern/kern_descrip.c:1067 [inline] fdcopy(ffff8000ffff0448) at fdcopy+0x48 sys/kern/kern_descrip.c:1106 process_new(ffff80002a2527f0,ffff8000ffff0448,1) at process_new+0x2bc sys/kern/kern_fork.c:258 fork1(ffff80002a2692b0,1,ffffffff8256aba0,0,ffff8000373d0470,0) at fork1+0x318 sys/kern/kern_fork.c:384 syscall(ffff8000373d04d0) at syscall+0x42c sys/arch/amd64/amd64/trap.c:591 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x72fa6dc01440, count: -9