panic: pool_do_get: fdescpl free list modified: page 0xfffffd8071cfb000; item addr 0xfffffd8071cfb9c0; offset 0x48=0xdeaf4153 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *121208 48304 32767 0x10 0 1K syz-executor.0 194251 16172 0 0x12 0 0 sshd db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8260bb27) at panic+0x177 sys/kern/subr_prf.c:198 pool_do_get(ffffffff82b58308,9,ffff80002ca6a7f8) at pool_do_get+0x474 sys/kern/subr_pool.c:739 pool_get(ffffffff82b58308,9) at pool_get+0xe9 sys/kern/subr_pool.c:582 fdcopy(ffff800021299d28) at fdcopy+0x44 fdinit sys/kern/kern_descrip.c:1067 [inline] fdcopy(ffff800021299d28) at fdcopy+0x44 sys/kern/kern_descrip.c:1106 process_new(ffff80002479e2b0,ffff800021299d28,1) at process_new+0x2bc sys/kern/kern_fork.c:255 fork1(ffff80002479ca88,1,ffffffff81cdb2e0,0,ffff80002ca6aa40,0) at fork1+0x30b sys/kern/kern_fork.c:379 syscall(ffff80002ca6aac0) at syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff80002ca6aac0) at syscall+0x435 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe9050, 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 0xfffffd8071cfb000; item addr 0xfffffd8071cfb9c0; offset 0x48=0xdeaf4153 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8260bb27) at panic+0x177 sys/kern/subr_prf.c:198 pool_do_get(ffffffff82b58308,9,ffff80002ca6a7f8) at pool_do_get+0x474 sys/kern/subr_pool.c:739 pool_get(ffffffff82b58308,9) at pool_get+0xe9 sys/kern/subr_pool.c:582 fdcopy(ffff800021299d28) at fdcopy+0x44 fdinit sys/kern/kern_descrip.c:1067 [inline] fdcopy(ffff800021299d28) at fdcopy+0x44 sys/kern/kern_descrip.c:1106 process_new(ffff80002479e2b0,ffff800021299d28,1) at process_new+0x2bc sys/kern/kern_fork.c:255 fork1(ffff80002479ca88,1,ffffffff81cdb2e0,0,ffff80002ca6aa40,0) at fork1+0x30b sys/kern/kern_fork.c:379 syscall(ffff80002ca6aac0) at syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff80002ca6aac0) at syscall+0x435 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe9050, count: -9 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80002ca6a640 rbx 0xffff800020dd9b8f rdx 0 rcx 0 rax 0xffff80002479ca88 r8 0x101010101010101 r9 0x8080808080808080 r10 0x22eb6a87bef993bb r11 0x2f8fc9d1896d8b01 r12 0xffff800020dd9990 r13 0 r14 0 r15 0x1 rip 0xffffffff818f8bc8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80002ca6a630 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.0) pid=121208 stat=onproc flags process=10 proc=0 pri=16, usrpri=81, nice=20 forw=0xffffffffffffffff, list=0xffff80002479cd28,0xffff80002479dcf8 process=0xffff800021299d28 user=0xffff80002ca65000, vmspace=0xfffffd806c48b2f8 estcpu=31, cpticks=1, pctcpu=0.6 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 7797 489725 54757 32767 2 0x10 syz-executor.5 70631 246107 63252 32767 3 0x3010 suspend syz-executor.3 70631 459841 63252 32767 3 0x4081010 fdlock syz-executor.3 *48304 121208 3474 32767 7 0x10 syz-executor.0 3474 25149 91579 0 3 0x82 wait syz-executor.0 37198 341970 0 0 3 0x14200 bored sosplice 13238 17267 83660 32767 3 0x90 piperd syz-executor.6 83660 302781 91579 0 3 0x82 wait syz-executor.6 54757 36324 29450 32767 3 0x90 nanoslp syz-executor.5 51391 384354 43737 32767 3 0x90 piperd syz-executor.7 43737 121297 91579 0 3 0x82 wait syz-executor.7 63252 354867 71793 32767 3 0x90 nanoslp syz-executor.3 29450 53185 91579 0 3 0x82 wait syz-executor.5 17368 438719 10225 32767 2 0x10 syz-executor.2 10396 48025 63412 32767 3 0x90 piperd syz-executor.4 71793 152911 91579 0 3 0x82 wait syz-executor.3 63412 5726 91579 0 3 0x82 wait syz-executor.4 10225 260519 91579 0 3 0x82 wait syz-executor.2 75608 65622 4603 32767 3 0x90 piperd syz-executor.1 4603 175035 91579 0 3 0x82 wait syz-executor.1 91579 207732 5612 0 2 0x2 syz-fuzzer 91579 292537 5612 0 3 0x4000082 nanoslp syz-fuzzer 91579 188680 5612 0 3 0x4000082 thrsleep syz-fuzzer 91579 523579 5612 0 3 0x4000082 wait syz-fuzzer 91579 357796 5612 0 3 0x4000082 thrsleep syz-fuzzer 91579 417025 5612 0 2 0x4000002 syz-fuzzer 91579 54356 5612 0 3 0x4000082 wait syz-fuzzer 91579 394660 5612 0 3 0x4000082 wait syz-fuzzer 91579 202822 5612 0 3 0x4000082 thrsleep syz-fuzzer 91579 360820 5612 0 3 0x4000082 wait syz-fuzzer 91579 174924 5612 0 3 0x4000082 wait syz-fuzzer 91579 40252 5612 0 3 0x4000082 thrsleep syz-fuzzer 91579 3232 5612 0 3 0x4000082 wait syz-fuzzer 91579 209698 5612 0 3 0x4000082 wait syz-fuzzer 91579 292769 5612 0 3 0x4000082 wait syz-fuzzer 5612 121356 16172 0 3 0x10008a sigsusp ksh 16172 194251 3985 0 7 0x12 sshd 70108 207844 1 0 3 0x100083 ttyin getty 3985 178448 1 0 3 0x88 kqread sshd 47100 457989 39770 73 3 0x1100090 kqread syslogd 39770 446170 1 0 3 0x100082 netio syslogd 35057 295912 1 0 3 0x100080 kqread resolvd 96375 168334 12550 77 3 0x100092 kqread dhcpleased 71691 175998 12550 77 3 0x100092 kqread dhcpleased 12550 231714 1 0 3 0x80 kqread dhcpleased 5906 384341 0 0 3 0x14200 bored smr 57898 335976 0 0 2 0x14200 zerothread 59244 224914 0 0 3 0x14200 aiodoned aiodoned 9194 76226 0 0 3 0x14200 syncer update 27758 355757 0 0 3 0x14200 cleaner cleaner 22600 296499 0 0 3 0x14200 reaper reaper 96150 439786 0 0 3 0x14200 pgdaemon pagedaemon 43385 54880 0 0 3 0x14200 bored viomb 71422 180645 0 0 3 0x40014200 acpi0 acpi0 14966 22825 0 0 3 0x40014200 idle1 57761 342518 0 0 3 0x14200 bored softnet 48322 441241 0 0 3 0x14200 bored softnet 38415 34373 0 0 2 0x14200 softnet 4773 101599 0 0 3 0x14200 bored softnet 31383 198807 0 0 3 0x14200 bored systqmp 21860 487921 0 0 3 0x14200 bored systq 86237 194920 0 0 3 0x40014200 bored softclock 65815 384326 0 0 3 0x40014200 idle0 1 479395 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 (0xffffffff82b58318) #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+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] #7 syscall+0x435 sys/arch/amd64/amd64/trap.c:585 #8 Xsyscall+0x128 Process 70631 (syz-executor.3) thread 0xffff8000fffee7e0 (459841) exclusive rwlock sysctllk r = 0 (0xffffffff82984f20) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 sys_sysctl+0x1b3 sys/kern/kern_sysctl.c:232 #3 syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] #3 syscall+0x435 sys/arch/amd64/amd64/trap.c:585 #4 Xsyscall+0x128 Process 48304 (syz-executor.0) thread 0xffff80002479ca88 (121208) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82b60b50) #0 witness_lock+0x44d #1 syscall+0x41d mi_syscall sys/sys/syscall_mi.h:100 [inline] #1 syscall+0x41d sys/arch/amd64/amd64/trap.c:585 #2 Xsyscall+0x128 exclusive mutex fdescpl r = 0 (0xffffffff82b58318) #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+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] #7 syscall+0x435 sys/arch/amd64/amd64/trap.c:585 #8 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10208 6411K 6420K 78643K 11305 0 pcb 13 10K 12K 78643K 15 0 rtable 236 6K 7K 78643K 536 0 ifaddr 82 16K 16K 78643K 98 0 sysctl 1 1K 3K 78643K 69 0 counters 56 35K 35K 78643K 60 0 ioctlops 0 0K 2K 78643K 42 0 iov 0 0K 28K 78643K 3093 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1270 79K 79K 78643K 1576 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 30 0 VM map 2 1K 1K 78643K 2 0 sem 12 1K 1K 78643K 53 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 20 73K 117K 78643K 2787 0 sigio 0 0K 0K 78643K 383 0 proc 56 78K 115K 78643K 592 0 subproc 104 6K 6K 78643K 130 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 148 0 in_multi 99 6K 6K 78643K 142 0 ether_multi 1 0K 0K 78643K 6 0 mrt 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 175 784K 784K 78643K 175 0 exec 0 0K 2K 78643K 905 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 275 86K 97K 78643K 17695 0 UVM aobj 131 4K 4K 78643K 131 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 43 0 NDP 11 0K 2K 78643K 33 0 temp 125 4735K 4799K 78643K 10192 0 kqueue 12 18K 24K 78643K 153 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 120 130 0 127 1 0 1 1 0 8 0 rtentry 112 136 0 25 4 0 4 4 0 8 0 unpcb 144 6435 0 6421 45 39 6 10 0 8 4 syncache 296 12 0 12 4 4 0 1 0 8 0 tcpqe 32 7 0 7 3 3 0 1 0 8 0 tcpcb 768 1196 0 1189 35 30 5 15 0 8 3 arp 120 22 0 4 1 0 1 1 0 8 0 ipq 40 3 0 2 2 1 1 1 0 8 0 ipqe 40 11 0 6 2 1 1 1 0 8 0 inpcb 368 2025 0 2015 44 36 8 14 0 8 6 nd6 48 33 0 8 1 0 1 1 0 8 0 kcovpl 48 10 0 2 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 573 0 114 31 1 30 30 0 8 0 art_table 32 574 0 114 4 0 4 4 0 8 0 art_node 16 135 0 34 1 0 1 1 0 8 0 sysvmsgpl 40 60 0 24 1 0 1 1 0 8 0 semupl 112 6 0 6 1 1 0 1 0 8 0 semapl 112 51 0 41 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 4756 0 3327 90 0 90 90 0 8 0 ffsino 272 4756 0 3327 96 0 96 96 0 8 0 nchpl 144 8993 0 7370 63 0 63 63 0 8 0 uvmvnodes 80 4895 0 0 100 0 100 100 0 8 0 vnodes 216 4895 0 0 272 0 272 272 0 8 0 namei 1024 27593 0 27593 2 1 1 2 0 8 1 percpumem 16 42 0 2 1 0 1 1 0 8 0 kstatmem 264 26 0 4 2 0 2 2 0 8 0 scxspl 216 24361 0 24361 13 10 3 8 0 8 3 plimitpl 152 436 0 413 5 4 1 2 0 8 0 sigapl 424 3074 0 3025 7 0 7 7 0 8 0 futexpl 64 27025 0 27025 1 0 1 1 0 8 1 knotepl 120 208 0 0 6 0 6 6 0 8 0 kqueuepl 216 565 0 557 15 14 1 5 0 8 0 pipepl 320 1326 0 1298 33 25 8 8 0 8 5 fdescpl 496 3056 0 3025 7 2 5 6 0 8 0 pool(0xffffffff82b58308:fdescpl): page inconsistency: page 0xfffffd8071cfb000; 1 on list, 6 missing, 8 items per page filepl 152 23040 0 22805 55 40 15 19 0 8 4 lockfpl 104 201 0 199 1 0 1 1 0 8 0 lockfspl 48 81 0 79 1 0 1 1 0 8 0 sessionpl 144 25 0 9 1 0 1 1 0 8 0 pgrppl 48 31 0 15 1 0 1 1 0 8 0 ucredpl 104 3979 0 3961 1 0 1 1 0 8 0 zombiepl 144 3026 0 3025 1 0 1 1 0 8 0 processpl 1064 3075 0 3025 5 1 4 5 0 8 0 procpl 672 7872 0 7807 12 4 8 8 0 8 1 sosppl 168 34 0 34 4 3 1 1 0 8 1 sockpl 488 8694 0 8667 202 182 20 34 0 8 14 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 17 0 0 3 0 3 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 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 416 0 0 51 1 50 51 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 1237 0 0 71 0 71 71 0 8 0 bufpl 288 7748 0 1417 453 0 453 453 0 8 0 anonpl 24 576239 0 563751 113 4 109 109 0 186 0 amapchunkpl 152 50288 0 49658 51 15 36 39 0 158 4 amappl16 200 7706 0 7360 44 17 27 32 0 8 8 amappl15 192 108 0 96 1 0 1 1 0 8 0 amappl14 184 6 0 4 1 0 1 1 0 8 0 amappl13 176 1048 0 1041 1 0 1 1 0 8 0 amappl12 168 20 0 18 1 0 1 1 0 8 0 amappl11 160 1179 0 1165 1 0 1 1 0 8 0 amappl10 152 34 0 30 1 0 1 1 0 8 0 amappl9 144 963 0 954 1 0 1 1 0 8 0 amappl8 136 1259 0 1183 3 0 3 3 0 8 0 amappl7 128 728 0 706 1 0 1 1 0 8 0 amappl6 120 281 0 261 2 1 1 2 0 8 0 amappl5 112 1249 0 1238 1 0 1 1 0 8 0 amappl4 104 3218 0 3182 2 0 2 2 0 8 0 amappl3 96 9156 0 9106 2 0 2 2 0 8 0 amappl2 88 4136 0 4063 3 1 2 3 0 8 0 amappl1 80 74941 0 74189 23 4 19 21 0 8 0 amappl 88 17025 0 16857 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 72 130 0 0 3 0 3 3 0 8 0 uaddrrnd 24 3056 0 3025 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3056 0 3025 1 0 1 1 0 8 0 vmmpekpl 168 30524 0 30462 3 0 3 3 0 8 0 vmmpepl 168 306489 0 303908 159 12 147 147 0 357 15 vmsppl 368 3055 0 3025 4 0 4 4 0 8 0 rwobjpl 56 78662 0 72189 95 0 95 95 0 8 0 pdppl 4096 6119 0 6050 157 76 81 91 0 8 12 pvpl 32 1338794 0 1320592 259 64 195 253 0 265 4 pmappl 248 3055 0 3025 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1018 0 117 26 0 26 26 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff8292bff0) 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(ffffffff82b60948) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82b60948) at __mp_lock+0x122 sys/kern/kern_lock.c:147 intr_handler(ffff800021296370,ffff80000067c080) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __mp_lock(ffffffff82b60948) at __mp_lock+0x129 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82b60948) at __mp_lock+0x129 sys/kern/kern_lock.c:147 syscall(ffff800021296540) at syscall+0x41d mi_syscall sys/sys/syscall_mi.h:100 [inline] syscall(ffff800021296540) at syscall+0x41d sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd8110, count: 6 ddb{0}> trace x86_ipi_db(ffffffff8292bff0) 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(ffffffff82b60948) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82b60948) at __mp_lock+0x122 sys/kern/kern_lock.c:147 intr_handler(ffff800021296370,ffff80000067c080) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __mp_lock(ffffffff82b60948) at __mp_lock+0x129 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82b60948) at __mp_lock+0x129 sys/kern/kern_lock.c:147 syscall(ffff800021296540) at syscall+0x41d mi_syscall sys/sys/syscall_mi.h:100 [inline] syscall(ffff800021296540) at syscall+0x41d sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd8110, count: -9 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(ffffffff8260bb27) at panic+0x177 sys/kern/subr_prf.c:198 pool_do_get(ffffffff82b58308,9,ffff80002ca6a7f8) at pool_do_get+0x474 sys/kern/subr_pool.c:739 pool_get(ffffffff82b58308,9) at pool_get+0xe9 sys/kern/subr_pool.c:582 fdcopy(ffff800021299d28) at fdcopy+0x44 fdinit sys/kern/kern_descrip.c:1067 [inline] fdcopy(ffff800021299d28) at fdcopy+0x44 sys/kern/kern_descrip.c:1106 process_new(ffff80002479e2b0,ffff800021299d28,1) at process_new+0x2bc sys/kern/kern_fork.c:255 fork1(ffff80002479ca88,1,ffffffff81cdb2e0,0,ffff80002ca6aa40,0) at fork1+0x30b sys/kern/kern_fork.c:379 syscall(ffff80002ca6aac0) at syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff80002ca6aac0) at syscall+0x435 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe9050, count: 6 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8260bb27) at panic+0x177 sys/kern/subr_prf.c:198 pool_do_get(ffffffff82b58308,9,ffff80002ca6a7f8) at pool_do_get+0x474 sys/kern/subr_pool.c:739 pool_get(ffffffff82b58308,9) at pool_get+0xe9 sys/kern/subr_pool.c:582 fdcopy(ffff800021299d28) at fdcopy+0x44 fdinit sys/kern/kern_descrip.c:1067 [inline] fdcopy(ffff800021299d28) at fdcopy+0x44 sys/kern/kern_descrip.c:1106 process_new(ffff80002479e2b0,ffff800021299d28,1) at process_new+0x2bc sys/kern/kern_fork.c:255 fork1(ffff80002479ca88,1,ffffffff81cdb2e0,0,ffff80002ca6aa40,0) at fork1+0x30b sys/kern/kern_fork.c:379 syscall(ffff80002ca6aac0) at syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff80002ca6aac0) at syscall+0x435 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe9050, count: -9