panic: pool_do_get: fdescpl free list modified: page 0xfffffd8068eb1000; item addr 0xfffffd8068eb11f8; offset 0x48=0xdeafbeaf Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 517950 8702 32767 0x10 0 0 syz-executor.4 *353647 58896 32767 0x10 0 1K syz-executor.7 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff825fbce3) at panic+0x177 sys/kern/subr_prf.c:202 pool_do_get(ffffffff82b53fb8,9,ffff80002af5e728) at pool_do_get+0x474 sys/kern/subr_pool.c:741 pool_get(ffffffff82b53fb8,9) at pool_get+0xe9 sys/kern/subr_pool.c:584 fdcopy(ffff8000fffe8440) at fdcopy+0x44 fdinit sys/kern/kern_descrip.c:1072 [inline] fdcopy(ffff8000fffe8440) at fdcopy+0x44 sys/kern/kern_descrip.c:1111 process_new(ffff8000fffec7e8,ffff8000fffe8440,1) at process_new+0x13b sys/kern/kern_fork.c:259 fork1(ffff8000fffe7cf0,1,ffffffff8245ee00,0,ffff80002af5e960,0) at fork1+0x30b sys/kern/kern_fork.c:383 syscall(ffff80002af5e9d0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002af5e9d0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff8ad0, 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 0xfffffd8068eb1000; item addr 0xfffffd8068eb11f8; offset 0x48=0xdeafbeaf ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff825fbce3) at panic+0x177 sys/kern/subr_prf.c:202 pool_do_get(ffffffff82b53fb8,9,ffff80002af5e728) at pool_do_get+0x474 sys/kern/subr_pool.c:741 pool_get(ffffffff82b53fb8,9) at pool_get+0xe9 sys/kern/subr_pool.c:584 fdcopy(ffff8000fffe8440) at fdcopy+0x44 fdinit sys/kern/kern_descrip.c:1072 [inline] fdcopy(ffff8000fffe8440) at fdcopy+0x44 sys/kern/kern_descrip.c:1111 process_new(ffff8000fffec7e8,ffff8000fffe8440,1) at process_new+0x13b sys/kern/kern_fork.c:259 fork1(ffff8000fffe7cf0,1,ffffffff8245ee00,0,ffff80002af5e960,0) at fork1+0x30b sys/kern/kern_fork.c:383 syscall(ffff80002af5e9d0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002af5e9d0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff8ad0, count: -9 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80002af5e570 rbx 0xffff800020ce9c5f rdx 0 rcx 0 rax 0xffff8000fffe7cf0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xf7dbe6335a3624d6 r11 0xcc929b7d57edcc76 r12 0xffff800020ce9a60 r13 0 r14 0 r15 0x1 rip 0xffffffff8217c168 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80002af5e560 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.7) pid=353647 stat=onproc flags process=10 proc=0 pri=59, usrpri=59, nice=20 forw=0xffffffffffffffff, list=0xffff8000fffefa40,0xffff8000fffe6d40 process=0xffff8000fffe8440 user=0xffff80002af59000, vmspace=0xfffffd8068f02748 estcpu=36, cpticks=1, pctcpu=0.1 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 22352 85274 83600 32767 2 0x10 syz-executor.6 22352 456573 83600 32767 3 0x4000090 fsleep syz-executor.6 60148 312332 20780 32767 2 0x10 syz-executor.0 60148 475463 20780 32767 3 0x4000090 fsleep syz-executor.0 60148 200067 20780 32767 3 0x4000090 fsleep syz-executor.0 8888 322885 54091 32767 2 0x10 syz-executor.1 8888 381733 54091 32767 3 0x4000090 fsleep syz-executor.1 8888 47088 54091 32767 3 0x4000090 fsleep syz-executor.1 8888 447586 54091 32767 3 0x4000090 fsleep syz-executor.1 8702 517950 28315 32767 7 0x10 syz-executor.4 8702 413600 28315 32767 3 0x4000090 kqread syz-executor.4 34614 486486 0 0 3 0x14200 bored sosplice 83600 502971 43881 32767 3 0x90 nanoslp syz-executor.6 *58896 353647 71915 32767 7 0x10 syz-executor.7 71915 505823 27977 0 3 0x82 wait syz-executor.7 1668 121533 76539 32767 2 0x10 syz-executor.3 43881 331576 27977 0 3 0x82 wait syz-executor.6 71536 153337 35630 32767 3 0x90 nanoslp syz-executor.5 28315 315475 67540 32767 3 0x90 nanoslp syz-executor.4 67540 362392 27977 0 3 0x82 wait syz-executor.4 39255 256914 71927 32767 3 0x90 nanoslp syz-executor.2 35630 382996 27977 0 3 0x82 wait syz-executor.5 76539 146619 27977 0 3 0x82 wait syz-executor.3 71927 427912 27977 0 3 0x82 wait syz-executor.2 54091 195988 42789 32767 3 0x90 nanoslp syz-executor.1 20780 397661 42457 32767 3 0x90 nanoslp syz-executor.0 42789 327756 27977 0 3 0x82 wait syz-executor.1 42457 305690 27977 0 3 0x82 wait syz-executor.0 27977 271620 96672 0 3 0x82 thrsleep syz-fuzzer 27977 195146 96672 0 3 0x4000082 nanoslp syz-fuzzer 27977 223936 96672 0 3 0x4000082 thrsleep syz-fuzzer 27977 8268 96672 0 3 0x4000082 thrsleep syz-fuzzer 27977 486315 96672 0 3 0x4000082 thrsleep syz-fuzzer 27977 221789 96672 0 3 0x4000082 thrsleep syz-fuzzer 27977 340560 96672 0 3 0x4000082 kqread syz-fuzzer 27977 296095 96672 0 3 0x4000082 thrsleep syz-fuzzer 27977 78938 96672 0 3 0x4000082 thrsleep syz-fuzzer 96672 224016 49697 0 3 0x10008a sigsusp ksh 49697 390144 59574 0 3 0x9a kqread sshd 10097 492831 1 0 3 0x100083 ttyin getty 59574 382224 1 0 3 0x88 kqread sshd 17722 257184 59183 73 3 0x1100090 kqread syslogd 59183 414244 1 0 3 0x100082 netio syslogd 64725 451714 1 0 3 0x100080 kqread resolvd 48516 169162 87679 77 3 0x100092 kqread dhcpleased 23879 234896 87679 77 3 0x100092 kqread dhcpleased 87679 246183 1 0 3 0x80 kqread dhcpleased 13145 349229 0 0 3 0x14200 bored smr 16379 62592 0 0 2 0x14200 zerothread 97256 116049 0 0 3 0x14200 aiodoned aiodoned 81604 376150 0 0 3 0x14200 syncer update 2673 255639 0 0 3 0x14200 cleaner cleaner 93681 115366 0 0 3 0x14200 reaper reaper 49358 118659 0 0 3 0x14200 pgdaemon pagedaemon 71150 132054 0 0 3 0x14200 bored viomb 295 465706 0 0 3 0x40014200 acpi0 acpi0 25376 484992 0 0 3 0x40014200 idle1 26751 55213 0 0 3 0x14200 bored softnet 57791 288700 0 0 3 0x14200 bored softnet 99728 437644 0 0 3 0x14200 bored softnet 99963 376168 0 0 3 0x14200 bored softnet 7138 18203 0 0 3 0x14200 fdlock systqmp 96711 405317 0 0 3 0x14200 bored systq 62207 253248 0 0 3 0x40014200 bored softclock 87219 29012 0 0 3 0x40014200 idle0 1 186325 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 (0xffffffff82b53fc8) #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:581 #4 fdcopy+0x44 fdinit sys/kern/kern_descrip.c:1072 [inline] #4 fdcopy+0x44 sys/kern/kern_descrip.c:1111 #5 process_new+0x13b sys/kern/kern_fork.c:259 #6 fork1+0x30b sys/kern/kern_fork.c:383 #7 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #7 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #8 Xsyscall+0x128 Process 58896 (syz-executor.7) thread 0xffff8000fffe7cf0 (353647) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff829d8990) #0 witness_lock+0x44d #1 syscall+0x3ef mi_syscall sys/sys/syscall_mi.h:93 [inline] #1 syscall+0x3ef sys/arch/amd64/amd64/trap.c:585 #2 Xsyscall+0x128 exclusive mutex fdescpl r = 0 (0xffffffff82b53fc8) #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:581 #4 fdcopy+0x44 fdinit sys/kern/kern_descrip.c:1072 [inline] #4 fdcopy+0x44 sys/kern/kern_descrip.c:1111 #5 process_new+0x13b sys/kern/kern_fork.c:259 #6 fork1+0x30b sys/kern/kern_fork.c:383 #7 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #7 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #8 Xsyscall+0x128 Process 7138 (systqmp) thread 0xffff8000210f8d20 (18203) shared rwlock systqmp r = 0 (0xffffffff829994d0) #0 witness_lock+0x44d #1 taskq_thread+0xca sys/kern/kern_task.c:445 #2 proc_trampoline+0x1c ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10215 6413K 6420K 78643K 11307 0 pcb 13 10K 12K 78643K 15 0 rtable 234 6K 6K 78643K 351 0 ifaddr 81 16K 16K 78643K 82 0 counters 56 35K 35K 78643K 56 0 ioctlops 0 0K 2K 78643K 36 0 iov 0 0K 12K 78643K 146 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1270 79K 79K 78643K 1405 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 6 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 123 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 22 81K 121K 78643K 776 0 proc 56 78K 103K 78643K 511 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 16 0 in_multi 99 6K 6K 78643K 102 0 ether_multi 1 0K 0K 78643K 1 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 289 1288K 1288K 78643K 289 0 exec 0 0K 2K 78643K 637 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 7 26K 26K 78643K 7 0 UVM amap 220 80K 83K 78643K 6117 0 UVM aobj 131 4K 4K 78643K 137 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 10 0 NDP 11 0K 2K 78643K 27 0 temp 119 4728K 4792K 78643K 4848 0 kqueue 15 22K 25K 78643K 106 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 73 0 70 2 1 1 2 0 8 0 rtentry 112 113 0 3 4 0 4 4 0 8 0 unpcb 136 643 0 630 10 6 4 6 0 8 3 syncache 296 14 0 14 4 3 1 1 0 8 1 tcpqe 32 33 0 33 2 1 1 1 0 8 1 tcpcb 736 381 0 373 23 9 14 14 0 8 13 arp 120 18 0 0 1 0 1 1 0 8 0 inpcb 312 733 0 723 19 10 9 9 0 8 8 nd6 48 26 0 2 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 256 479 0 26 30 1 29 30 0 8 0 art_table 32 480 0 26 4 0 4 4 0 8 0 art_node 16 112 0 12 1 0 1 1 0 8 0 sysvmsgpl 40 47 0 7 2 1 1 1 0 8 0 semapl 112 121 0 111 1 0 1 1 0 8 0 shmpl 112 134 0 6 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2378 0 947 90 0 90 90 0 8 0 ffsino 272 2378 0 947 96 0 96 96 0 8 0 nchpl 144 3691 0 2015 63 0 63 63 0 8 0 uvmvnodes 80 2491 0 0 51 0 51 51 0 8 0 vnodes 224 2491 0 0 147 0 147 147 0 8 0 namei 1024 13441 0 13441 2 1 1 2 0 8 1 percpumem 16 40 0 0 1 0 1 1 0 8 0 kstatmem 264 22 0 0 2 0 2 2 0 8 0 scxspl 216 10818 0 10818 9 8 1 8 0 8 1 plimitpl 152 344 0 322 3 1 2 2 0 8 1 sigapl 424 1054 0 1001 7 0 7 7 0 8 0 futexpl 64 6230 0 6224 1 0 1 1 0 8 0 knotepl 120 111 0 0 4 0 4 4 0 8 0 kqueuepl 216 418 0 407 9 8 1 7 0 8 0 pipepl 336 279 0 250 8 5 3 8 0 8 0 fdescpl 496 1036 0 1003 6 1 5 6 0 8 0 pool(0xffffffff82b53fb8:fdescpl): page inconsistency: page 0xfffffd8068eb1000; 2 on list, 5 missing, 8 items per page filepl 152 7257 0 7019 27 11 16 19 0 8 6 lockfpl 104 251 0 248 1 0 1 1 0 8 0 lockfspl 48 48 0 45 1 0 1 1 0 8 0 sessionpl 144 23 0 7 1 0 1 1 0 8 0 pgrppl 48 23 0 7 1 0 1 1 0 8 0 ucredpl 96 1528 0 1510 1 0 1 1 0 8 0 zombiepl 144 1003 0 1001 1 0 1 1 0 8 0 processpl 1064 1055 0 1001 5 1 4 5 0 8 0 procpl 672 2429 0 2360 8 1 7 8 0 8 0 sosppl 168 17 0 17 3 2 1 1 0 8 1 sockpl 480 1460 0 1434 42 30 12 21 0 8 8 mcl64k 65536 9 0 0 2 0 2 2 0 8 0 mcl16k 16384 5 0 0 1 0 1 1 0 8 0 mcl12k 12288 5 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 10 0 0 2 0 2 2 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 152 0 0 18 0 18 18 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 408 0 0 25 0 25 25 0 8 0 bufpl 288 4567 0 144 316 0 316 316 0 8 0 anonpl 24 191896 0 179848 116 15 101 114 0 186 20 amapchunkpl 152 16112 0 15543 26 1 25 25 0 158 0 amappl16 200 2981 0 2625 39 19 20 39 0 8 0 amappl15 192 83 0 80 1 0 1 1 0 8 0 amappl14 184 8 0 5 2 1 1 1 0 8 0 amappl13 176 169 0 165 1 0 1 1 0 8 0 amappl12 168 99 0 91 1 0 1 1 0 8 0 amappl11 160 78 0 64 1 0 1 1 0 8 0 amappl10 152 112 0 106 1 0 1 1 0 8 0 amappl9 144 759 0 749 1 0 1 1 0 8 0 amappl8 136 637 0 589 2 0 2 2 0 8 0 amappl7 128 208 0 193 1 0 1 1 0 8 0 amappl6 120 467 0 446 2 1 1 2 0 8 0 amappl5 112 653 0 631 1 0 1 1 0 8 0 amappl4 104 787 0 761 2 0 2 2 0 8 0 amappl3 96 2675 0 2620 2 0 2 2 0 8 0 amappl2 88 1470 0 1402 3 1 2 3 0 8 0 amappl1 80 26337 0 25663 20 4 16 19 0 8 0 amappl 88 5671 0 5513 5 0 5 5 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 72 136 0 6 3 0 3 3 0 8 0 uaddrrnd 24 1036 0 1003 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1036 0 1003 1 0 1 1 0 8 0 vmmpekpl 168 12964 0 12918 3 0 3 3 0 8 0 vmmpepl 168 103039 0 100548 145 21 124 136 0 357 4 vmsppl 368 1035 0 1003 4 0 4 4 0 8 0 rwobjpl 56 29410 0 25481 57 0 57 57 0 8 0 pdppl 4096 2079 0 2006 116 35 81 93 0 8 8 pvpl 32 475095 0 458144 258 36 222 256 0 265 76 pmappl 248 1035 0 1003 3 0 3 3 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 760 0 63 20 0 20 20 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff829b2ff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2f kd_curproc sys/dev/kcov.c:578 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2f sys/dev/kcov.c:148 __mp_lock(ffffffff829d8788) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff829d8788) at __mp_lock+0x133 sys/kern/kern_lock.c:147 softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x1f end of kernel end trace frame: 0x7f7fffff8710, count: 8 ddb{0}> trace x86_ipi_db(ffffffff829b2ff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2f kd_curproc sys/dev/kcov.c:578 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2f sys/dev/kcov.c:148 __mp_lock(ffffffff829d8788) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff829d8788) at __mp_lock+0x133 sys/kern/kern_lock.c:147 softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x1f end of kernel end trace frame: 0x7f7fffff8710, count: -7 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(ffffffff825fbce3) at panic+0x177 sys/kern/subr_prf.c:202 pool_do_get(ffffffff82b53fb8,9,ffff80002af5e728) at pool_do_get+0x474 sys/kern/subr_pool.c:741 pool_get(ffffffff82b53fb8,9) at pool_get+0xe9 sys/kern/subr_pool.c:584 fdcopy(ffff8000fffe8440) at fdcopy+0x44 fdinit sys/kern/kern_descrip.c:1072 [inline] fdcopy(ffff8000fffe8440) at fdcopy+0x44 sys/kern/kern_descrip.c:1111 process_new(ffff8000fffec7e8,ffff8000fffe8440,1) at process_new+0x13b sys/kern/kern_fork.c:259 fork1(ffff8000fffe7cf0,1,ffffffff8245ee00,0,ffff80002af5e960,0) at fork1+0x30b sys/kern/kern_fork.c:383 syscall(ffff80002af5e9d0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002af5e9d0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff8ad0, count: 6 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff825fbce3) at panic+0x177 sys/kern/subr_prf.c:202 pool_do_get(ffffffff82b53fb8,9,ffff80002af5e728) at pool_do_get+0x474 sys/kern/subr_pool.c:741 pool_get(ffffffff82b53fb8,9) at pool_get+0xe9 sys/kern/subr_pool.c:584 fdcopy(ffff8000fffe8440) at fdcopy+0x44 fdinit sys/kern/kern_descrip.c:1072 [inline] fdcopy(ffff8000fffe8440) at fdcopy+0x44 sys/kern/kern_descrip.c:1111 process_new(ffff8000fffec7e8,ffff8000fffe8440,1) at process_new+0x13b sys/kern/kern_fork.c:259 fork1(ffff8000fffe7cf0,1,ffffffff8245ee00,0,ffff80002af5e960,0) at fork1+0x30b sys/kern/kern_fork.c:383 syscall(ffff80002af5e9d0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002af5e9d0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff8ad0, count: -9