panic: pool_do_get: fdescpl free list modified: page 0xfffffd806b996000; item addr 0xfffffd806b996200; offset 0x48=0xdead4113 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 478720 47774 32767 0x10 0 0 syz-executor.5 *274322 620 32767 0x10 0 1K syz-executor.1 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8260d1ca) at panic+0x177 sys/kern/subr_prf.c:198 pool_do_get(ffffffff82a4fd28,9,ffff800024750a98) at pool_do_get+0x474 sys/kern/subr_pool.c:739 pool_get(ffffffff82a4fd28,9) at pool_get+0xe9 sys/kern/subr_pool.c:582 fdcopy(ffff8000ffff8868) at fdcopy+0x44 fdinit sys/kern/kern_descrip.c:1067 [inline] fdcopy(ffff8000ffff8868) at fdcopy+0x44 sys/kern/kern_descrip.c:1106 process_new(ffff8000ffff1510,ffff8000ffff8868,1) at process_new+0x2bc sys/kern/kern_fork.c:255 fork1(ffff8000ffff4000,1,ffffffff8144e4a0,0,ffff800024750ce0,0) at fork1+0x30b sys/kern/kern_fork.c:379 syscall(ffff800024750d60) at syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff800024750d60) at syscall+0x438 sys/arch/amd64/amd64/trap.c:599 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd0880, 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 0xfffffd806b996000; item addr 0xfffffd806b996200; offset 0x48=0xdead4113 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8260d1ca) at panic+0x177 sys/kern/subr_prf.c:198 pool_do_get(ffffffff82a4fd28,9,ffff800024750a98) at pool_do_get+0x474 sys/kern/subr_pool.c:739 pool_get(ffffffff82a4fd28,9) at pool_get+0xe9 sys/kern/subr_pool.c:582 fdcopy(ffff8000ffff8868) at fdcopy+0x44 fdinit sys/kern/kern_descrip.c:1067 [inline] fdcopy(ffff8000ffff8868) at fdcopy+0x44 sys/kern/kern_descrip.c:1106 process_new(ffff8000ffff1510,ffff8000ffff8868,1) at process_new+0x2bc sys/kern/kern_fork.c:255 fork1(ffff8000ffff4000,1,ffffffff8144e4a0,0,ffff800024750ce0,0) at fork1+0x30b sys/kern/kern_fork.c:379 syscall(ffff800024750d60) at syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff800024750d60) at syscall+0x438 sys/arch/amd64/amd64/trap.c:599 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd0880, count: -9 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff8000247508e0 rbx 0xffff800020dd9b8f rdx 0 rcx 0 rax 0xffff8000ffff4000 r8 0x101010101010101 r9 0x8080808080808080 r10 0xdf30f8e9cf6d2022 r11 0xbe0d5cf7dfc0af14 r12 0xffff800020dd9990 r13 0 r14 0 r15 0x1 rip 0xffffffff816f9ef8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff8000247508d0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.1) pid=274322 stat=onproc flags process=10 proc=0 pri=16, usrpri=77, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff5500,0xffff8000ffff5a50 process=0xffff8000ffff8868 user=0xffff80002474b000, vmspace=0xfffffd806ef79008 estcpu=36, cpticks=3, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 2449 98399 84957 32767 2 0x10 syz-executor.7 2449 331060 84957 32767 3 0x4000090 fsleep syz-executor.7 67884 233215 25153 32767 2 0x10 syz-executor.4 67884 295419 25153 32767 3 0x4000010 fdlock syz-executor.4 63460 169114 36539 32767 2 0x490 syz-executor.2 63460 12516 36539 32767 3 0x4000090 kqread syz-executor.2 63460 371693 36539 32767 3 0x4000090 fsleep syz-executor.2 38155 292556 53051 32767 2 0x490 syz-executor.3 38155 324988 53051 32767 3 0x4000090 fsleep syz-executor.3 38155 460454 53051 32767 3 0x4000090 pipewr syz-executor.3 67673 301883 47774 32767 2 0x10 syz-executor.5 67673 255032 47774 32767 2 0x4000010 syz-executor.5 64197 279830 0 0 3 0x14200 bored sosplice 36539 148419 91505 32767 3 0x90 nanoslp syz-executor.2 23402 69796 38887 32767 2 0x90 syz-executor.6 53051 294719 37109 32767 2 0x490 syz-executor.3 84957 62163 15437 32767 3 0x90 nanoslp syz-executor.7 25153 377892 11617 32767 3 0x90 nanoslp syz-executor.4 15437 500183 49393 0 3 0x82 wait syz-executor.7 37109 484239 49393 0 3 0x82 wait syz-executor.3 47774 478720 15279 32767 7 0x10 syz-executor.5 11617 94250 49393 0 3 0x82 wait syz-executor.4 38887 480575 49393 0 3 0x82 wait syz-executor.6 15279 235606 49393 0 3 0x82 wait syz-executor.5 91505 347536 49393 0 3 0x82 wait syz-executor.2 * 620 274322 42807 32767 7 0x10 syz-executor.1 42807 336541 49393 0 3 0x82 wait syz-executor.1 61919 205592 58899 32767 2 0x10 syz-executor.0 58899 14221 49393 0 3 0x82 wait syz-executor.0 49393 446942 1768 0 3 0x82 wait syz-fuzzer 49393 155007 1768 0 2 0x4000482 syz-fuzzer 49393 490731 1768 0 3 0x4000082 wait syz-fuzzer 49393 132431 1768 0 3 0x4000082 wait syz-fuzzer 49393 145397 1768 0 3 0x4000082 wait syz-fuzzer 49393 110863 1768 0 3 0x4000082 thrsleep syz-fuzzer 49393 141516 1768 0 3 0x4000082 thrsleep syz-fuzzer 49393 106657 1768 0 3 0x4000082 wait syz-fuzzer 49393 374822 1768 0 3 0x4000082 thrsleep syz-fuzzer 49393 390696 1768 0 3 0x4000082 wait syz-fuzzer 49393 449228 1768 0 3 0x4000082 wait syz-fuzzer 49393 519493 1768 0 3 0x4000082 wait syz-fuzzer 49393 275895 1768 0 3 0x4000082 kqread syz-fuzzer 49393 415036 1768 0 2 0x4000002 syz-fuzzer 49393 495116 1768 0 3 0x4000082 thrsleep syz-fuzzer 1768 411834 51543 0 3 0x10008a sigsusp ksh 51543 252047 91143 0 2 0x9a sshd 21768 8536 1 0 3 0x100083 ttyin getty 91143 200109 1 0 3 0x88 kqread sshd 37914 417870 98966 73 3 0x1100090 kqread syslogd 98966 3333 1 0 3 0x100082 netio syslogd 68983 68784 1 0 3 0x100080 kqread resolvd 63966 69338 30616 77 3 0x100092 kqread dhcpleased 95048 133567 30616 77 3 0x100092 kqread dhcpleased 30616 72653 1 0 3 0x80 kqread dhcpleased 99302 8298 0 0 3 0x14200 bored smr 68230 189474 0 0 2 0x14200 zerothread 92383 211638 0 0 3 0x14200 aiodoned aiodoned 70509 472564 0 0 3 0x14200 syncer update 45098 389122 0 0 3 0x14200 cleaner cleaner 57495 135535 0 0 3 0x14200 reaper reaper 47533 435881 0 0 3 0x14200 pgdaemon pagedaemon 12794 158703 0 0 3 0x14200 bored viomb 17060 490935 0 0 3 0x40014200 acpi0 acpi0 39730 287965 0 0 3 0x40014200 idle1 17952 82586 0 0 3 0x14200 bored softnet 57651 54708 0 0 3 0x14200 bored softnet 4927 417797 0 0 3 0x14200 bored softnet 20341 345057 0 0 3 0x14200 bored softnet 72615 256498 0 0 3 0x14200 bored systqmp 1317 25235 0 0 3 0x14200 bored systq 46070 486044 0 0 3 0x40014200 bored softclock 30418 162523 0 0 3 0x40014200 idle0 1 113638 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 (0xffffffff82a4fd38) #0 witness_lock+0x44d #1 mtx_enter_try+0x100 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 pool_get+0xbd sys/kern/subr_pool.c:579 #4 fdcopy+0x44 fdinit sys/kern/kern_descrip.c:1067 [inline] #4 fdcopy+0x44 sys/kern/kern_descrip.c:1106 #5 process_new+0x2bc sys/kern/kern_fork.c:255 #6 fork1+0x30b sys/kern/kern_fork.c:379 #7 syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline] #7 syscall+0x438 sys/arch/amd64/amd64/trap.c:599 #8 Xsyscall+0x128 Process 67884 (syz-executor.4) thread 0xffff8000ffff2548 (295419) exclusive rwlock sysctllk r = 0 (0xffffffff82932f70) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 sys_sysctl+0x1b3 sys/kern/kern_sysctl.c:234 #3 syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline] #3 syscall+0x438 sys/arch/amd64/amd64/trap.c:599 #4 Xsyscall+0x128 Process 620 (syz-executor.1) thread 0xffff8000ffff4000 (274322) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82a5c0f8) #0 witness_lock+0x44d #1 syscall+0x424 mi_syscall sys/sys/syscall_mi.h:101 [inline] #1 syscall+0x424 sys/arch/amd64/amd64/trap.c:599 #2 Xsyscall+0x128 exclusive mutex fdescpl r = 0 (0xffffffff82a4fd38) #0 witness_lock+0x44d #1 mtx_enter_try+0x100 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 pool_get+0xbd sys/kern/subr_pool.c:579 #4 fdcopy+0x44 fdinit sys/kern/kern_descrip.c:1067 [inline] #4 fdcopy+0x44 sys/kern/kern_descrip.c:1106 #5 process_new+0x2bc sys/kern/kern_fork.c:255 #6 fork1+0x30b sys/kern/kern_fork.c:379 #7 syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline] #7 syscall+0x438 sys/arch/amd64/amd64/trap.c:599 #8 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10193 6409K 6420K 78643K 11283 0 pcb 13 10K 12K 78643K 15 0 rtable 234 6K 6K 78643K 345 0 ifaddr 71 16K 16K 78643K 73 0 counters 60 35K 35K 78643K 60 0 ioctlops 0 0K 2K 78643K 41 0 iov 0 0K 12K 78643K 220 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1271 79K 79K 78643K 1457 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 15 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 69 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 23 85K 121K 78643K 476 0 sigio 0 0K 0K 78643K 53 0 proc 56 78K 103K 78643K 647 0 subproc 104 6K 6K 78643K 104 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 6 0 in_multi 99 6K 6K 78643K 99 0 ether_multi 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 67 307K 307K 78643K 67 0 exec 0 0K 1K 78643K 375 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 8 62K 64K 78643K 10 0 UVM amap 306 82K 83K 78643K 4946 0 UVM aobj 92 3K 3K 78643K 92 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 7 0 NDP 11 0K 2K 78643K 27 0 temp 91 4682K 4746K 78643K 4809 0 kqueue 14 22K 22K 78643K 57 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> 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 92 0 89 2 0 2 2 0 8 1 rtentry 112 111 0 1 4 0 4 4 0 8 0 unpcb 144 621 0 608 6 0 6 6 0 8 5 syncache 296 7 0 7 2 1 1 1 0 8 1 tcpqe 32 47 0 47 2 1 1 1 0 8 1 tcpcb 776 44 0 36 2 0 2 2 0 8 1 arp 120 18 0 0 1 0 1 1 0 8 0 inpcb 368 662 0 645 16 5 11 11 0 8 8 nd6 48 24 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 452 0 0 29 0 29 29 0 8 0 art_table 32 453 0 0 4 0 4 4 0 8 0 art_node 16 110 0 10 1 0 1 1 0 8 0 semapl 112 67 0 57 1 0 1 1 0 8 0 shmpl 112 89 0 0 3 0 3 3 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2057 0 628 90 0 90 90 0 8 0 ffsino 272 2057 0 628 96 0 96 96 0 8 0 nchpl 144 2802 0 1137 63 0 63 63 0 8 0 uvmvnodes 80 2170 0 0 45 0 45 45 0 8 0 vnodes 216 2170 0 0 121 0 121 121 0 8 0 namei 1024 9547 0 9547 2 1 1 2 0 8 1 percpumem 16 42 0 0 1 0 1 1 0 8 0 kstatmem 264 22 0 0 2 0 2 2 0 8 0 scxspl 216 8485 0 8485 9 1 8 8 0 8 8 plimitpl 152 57 0 33 2 1 1 2 0 8 0 sigapl 424 757 0 705 7 0 7 7 0 8 0 futexpl 64 4364 0 4361 1 0 1 1 0 8 0 knotepl 120 114 0 0 4 0 4 4 0 8 0 kqueuepl 216 133 0 122 3 0 3 3 0 8 2 pipepl 320 233 0 204 6 3 3 6 0 8 0 fdescpl 496 739 0 705 7 2 5 6 0 8 0 pool(0xffffffff82a4fd28:fdescpl): page inconsistency: page 0xfffffd806b996000; 2 on list, 5 missing, 8 items per page filepl 152 5105 0 4858 16 1 15 16 0 8 4 lockfpl 104 42 0 40 1 0 1 1 0 8 0 lockfspl 48 22 0 20 1 0 1 1 0 8 0 sessionpl 144 23 0 7 1 0 1 1 0 8 0 pgrppl 48 26 0 10 1 0 1 1 0 8 0 ucredpl 104 870 0 852 1 0 1 1 0 8 0 zombiepl 144 705 0 705 1 0 1 1 0 8 1 processpl 1072 758 0 705 5 1 4 5 0 8 0 procpl 672 1464 0 1390 8 0 8 8 0 8 1 sosppl 168 4 0 4 1 0 1 1 0 8 1 sockpl 488 1377 0 1344 33 20 13 21 0 8 8 mcl64k 65536 12 0 0 2 0 2 2 0 8 0 mcl16k 16384 5 0 0 1 0 1 1 0 8 0 mcl12k 12288 6 0 0 1 0 1 1 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 10 0 0 2 0 2 2 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 355 0 0 44 0 44 44 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 407 0 0 25 0 25 25 0 8 0 bufpl 288 4573 0 137 317 0 317 317 0 8 0 anonpl 24 204747 0 189235 109 3 106 106 0 186 11 amapchunkpl 152 14357 0 13625 36 3 33 36 0 158 0 amappl16 200 3866 0 3402 31 5 26 30 0 8 1 amappl15 192 6 0 6 1 1 0 1 0 8 0 amappl14 184 129 0 118 2 0 2 2 0 8 0 amappl13 176 2 0 2 1 1 0 1 0 8 0 amappl12 168 390 0 383 1 0 1 1 0 8 0 amappl11 160 45 0 35 1 0 1 1 0 8 0 amappl10 152 47 0 34 1 0 1 1 0 8 0 amappl9 144 963 0 961 1 0 1 1 0 8 0 amappl8 136 171 0 121 2 0 2 2 0 8 0 amappl7 128 133 0 112 2 0 2 2 0 8 0 amappl6 120 153 0 141 1 0 1 1 0 8 0 amappl5 112 119 0 113 1 0 1 1 0 8 0 amappl4 104 446 0 421 2 1 1 2 0 8 0 amappl3 96 1674 0 1614 2 0 2 2 0 8 0 amappl2 88 1058 0 978 3 1 2 3 0 8 0 amappl1 80 19074 0 18303 23 5 18 22 0 8 1 amappl 88 4471 0 4270 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 91 0 0 2 0 2 2 0 8 0 uaddrrnd 24 740 0 706 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 740 0 706 1 0 1 1 0 8 0 vmmpekpl 168 11236 0 11180 3 0 3 3 0 8 0 vmmpepl 168 76494 0 73623 160 9 151 160 0 357 16 vmsppl 368 739 0 706 4 0 4 4 0 8 0 rwobjpl 56 25308 0 21463 55 0 55 55 0 8 0 pdppl 4096 1487 0 1412 121 40 81 93 0 8 6 pvpl 32 454621 0 432426 270 12 258 270 0 265 70 pmappl 248 739 0 706 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 757 0 48 21 0 21 21 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff829dbff0) 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 __mp_lock(ffffffff82a5bef0) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82a5bef0) at __mp_lock+0x122 sys/kern/kern_lock.c:147 intr_handler(ffff800026614120,ffff80000067c100) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge24_untramp() at Xintr_ioapic_edge24_untramp+0x18f __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x28 kd_curproc sys/dev/kcov.c:577 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x28 sys/dev/kcov.c:148 __mp_lock(ffffffff82a5bef0) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82a5bef0) at __mp_lock+0x133 sys/kern/kern_lock.c:147 syscall(ffff800026614300) at syscall+0x424 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff800026614300) at syscall+0x424 sys/arch/amd64/amd64/trap.c:599 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff9330, count: 5 ddb{0}> trace x86_ipi_db(ffffffff829dbff0) 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 __mp_lock(ffffffff82a5bef0) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82a5bef0) at __mp_lock+0x122 sys/kern/kern_lock.c:147 intr_handler(ffff800026614120,ffff80000067c100) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge24_untramp() at Xintr_ioapic_edge24_untramp+0x18f __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x28 kd_curproc sys/dev/kcov.c:577 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x28 sys/dev/kcov.c:148 __mp_lock(ffffffff82a5bef0) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82a5bef0) at __mp_lock+0x133 sys/kern/kern_lock.c:147 syscall(ffff800026614300) at syscall+0x424 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff800026614300) at syscall+0x424 sys/arch/amd64/amd64/trap.c:599 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff9330, count: -10 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x18: addq $0x8,%rsp db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8260d1ca) at panic+0x177 sys/kern/subr_prf.c:198 pool_do_get(ffffffff82a4fd28,9,ffff800024750a98) at pool_do_get+0x474 sys/kern/subr_pool.c:739 pool_get(ffffffff82a4fd28,9) at pool_get+0xe9 sys/kern/subr_pool.c:582 fdcopy(ffff8000ffff8868) at fdcopy+0x44 fdinit sys/kern/kern_descrip.c:1067 [inline] fdcopy(ffff8000ffff8868) at fdcopy+0x44 sys/kern/kern_descrip.c:1106 process_new(ffff8000ffff1510,ffff8000ffff8868,1) at process_new+0x2bc sys/kern/kern_fork.c:255 fork1(ffff8000ffff4000,1,ffffffff8144e4a0,0,ffff800024750ce0,0) at fork1+0x30b sys/kern/kern_fork.c:379 syscall(ffff800024750d60) at syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff800024750d60) at syscall+0x438 sys/arch/amd64/amd64/trap.c:599 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd0880, count: 6 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8260d1ca) at panic+0x177 sys/kern/subr_prf.c:198 pool_do_get(ffffffff82a4fd28,9,ffff800024750a98) at pool_do_get+0x474 sys/kern/subr_pool.c:739 pool_get(ffffffff82a4fd28,9) at pool_get+0xe9 sys/kern/subr_pool.c:582 fdcopy(ffff8000ffff8868) at fdcopy+0x44 fdinit sys/kern/kern_descrip.c:1067 [inline] fdcopy(ffff8000ffff8868) at fdcopy+0x44 sys/kern/kern_descrip.c:1106 process_new(ffff8000ffff1510,ffff8000ffff8868,1) at process_new+0x2bc sys/kern/kern_fork.c:255 fork1(ffff8000ffff4000,1,ffffffff8144e4a0,0,ffff800024750ce0,0) at fork1+0x30b sys/kern/kern_fork.c:379 syscall(ffff800024750d60) at syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff800024750d60) at syscall+0x438 sys/arch/amd64/amd64/trap.c:599 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd0880, count: -9