panic: pool_do_get: fdescpl free list modified: page 0xfffffd80672c5000; item addr 0xfffffd80672c5200; offset 0x48=0xdeafbeaf Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *103405 57473 32767 0x10 0 1 syz-executor.1 316159 81011 0 0x2000002 0x4000000 0 syz-fuzzer db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8280bdc4) at panic+0x17b sys/kern/subr_prf.c:198 pool_do_get(ffffffff82c529e0,9,ffff800026177188) at pool_do_get+0x484 sys/kern/subr_pool.c:739 pool_get(ffffffff82c529e0,9) at pool_get+0xed sys/kern/subr_pool.c:582 fdcopy(ffff800027d91508) at fdcopy+0x48 fdinit sys/kern/kern_descrip.c:1067 [inline] fdcopy(ffff800027d91508) at fdcopy+0x48 sys/kern/kern_descrip.c:1106 process_new(ffff8000211ee808,ffff800027d91508,1) at process_new+0x2bc sys/kern/kern_fork.c:257 fork1(ffff8000212a2ff8,1,ffffffff8108bf70,0,ffff8000261773e0,0) at fork1+0x318 sys/kern/kern_fork.c:383 syscall(ffff800026177460) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff800026177460) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x76dd065b3730, 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 0xfffffd80672c5000; item addr 0xfffffd80672c5200; offset 0x48=0xdeafbeaf ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8280bdc4) at panic+0x17b sys/kern/subr_prf.c:198 pool_do_get(ffffffff82c529e0,9,ffff800026177188) at pool_do_get+0x484 sys/kern/subr_pool.c:739 pool_get(ffffffff82c529e0,9) at pool_get+0xed sys/kern/subr_pool.c:582 fdcopy(ffff800027d91508) at fdcopy+0x48 fdinit sys/kern/kern_descrip.c:1067 [inline] fdcopy(ffff800027d91508) at fdcopy+0x48 sys/kern/kern_descrip.c:1106 process_new(ffff8000211ee808,ffff800027d91508,1) at process_new+0x2bc sys/kern/kern_fork.c:257 fork1(ffff8000212a2ff8,1,ffffffff8108bf70,0,ffff8000261773e0,0) at fork1+0x318 sys/kern/kern_fork.c:383 syscall(ffff800026177460) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff800026177460) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x76dd065b3730, count: -9 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800026176fd0 rbx 0xffff800020d59b9f rdx 0 rcx 0xffff8000212a2ff8 rax 0xffff800020d58ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x3d399ed0eff8c929 r11 0x5563f51ca1ec881d r12 0xffff800020d599a0 r13 0 r14 0 r15 0x1 rip 0xffffffff8138849c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff800026176fc0 ss 0x10 db_enter+0x1c: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.1) pid=103405 stat=onproc flags process=10 proc=0 pri=16, usrpri=74, nice=20 forw=0xffffffffffffffff, list=0xffff8000212a2aa8,0xffff8000212a2d60 process=0xffff800027d91508 user=0xffff800026172000, vmspace=0xfffffd806c478938 estcpu=24, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 44917 402174 10034 32767 2 0x90 syz-executor.6 10034 235610 81011 0 3 0x82 wait syz-executor.6 97449 19596 50374 32767 2 0x90 syz-executor.5 50374 267031 81011 0 3 0x82 wait syz-executor.5 40406 142695 66271 32767 2 0x90 syz-executor.3 66271 415538 81011 0 3 0x82 wait syz-executor.3 69962 138065 54285 32767 2 0x90 syz-executor.4 54285 435210 81011 0 3 0x82 wait syz-executor.4 2876 307073 6406 32767 2 0x10 syz-executor.0 6406 343784 81011 0 3 0x82 wait syz-executor.0 52479 502497 1 32767 2 0x10 syz-executor.2 *57473 103405 51430 32767 7 0x10 syz-executor.1 51430 356699 81011 0 3 0x82 wait syz-executor.1 71456 32657 0 0 3 0x14200 bored sosplice 60957 317044 64862 32767 2 0x90 syz-executor.7 64862 183552 81011 0 3 0x82 wait syz-executor.7 81011 353569 40437 0 3 0x2000082 wait syz-fuzzer 81011 354213 40437 0 3 0x6000082 nanoslp syz-fuzzer 81011 517127 40437 0 3 0x6000082 thrsleep syz-fuzzer 81011 514029 40437 0 3 0x6000082 wait syz-fuzzer 81011 99177 40437 0 2 0x6000002 syz-fuzzer 81011 280326 40437 0 3 0x6000082 wait syz-fuzzer 81011 319732 40437 0 3 0x6000082 wait syz-fuzzer 81011 326121 40437 0 3 0x6000082 thrsleep syz-fuzzer 81011 259710 40437 0 3 0x6000082 thrsleep syz-fuzzer 81011 228094 40437 0 3 0x6000082 thrsleep syz-fuzzer 81011 283269 40437 0 3 0x6000082 thrsleep syz-fuzzer 81011 316159 40437 0 7 0x6000002 syz-fuzzer 81011 280027 40437 0 3 0x6000082 wait syz-fuzzer 81011 25230 40437 0 3 0x6000082 wait syz-fuzzer 81011 18631 40437 0 3 0x6000082 thrsleep syz-fuzzer 81011 320798 40437 0 3 0x6000082 wait syz-fuzzer 40437 320196 36390 0 3 0x10008a sigsusp ksh 36390 496349 69341 0 2 0x12 sshd 25721 493391 1 0 3 0x100083 ttyin getty 69341 77881 1 0 3 0x88 kqread sshd 37427 63306 11285 73 3 0x1100090 kqread syslogd 11285 205356 1 0 3 0x100082 netio syslogd 2529 237833 1 0 3 0x100080 kqread resolvd 9945 7212 29923 77 3 0x100092 kqread dhcpleased 42894 156520 29923 77 3 0x100092 kqread dhcpleased 29923 318141 1 0 3 0x80 kqread dhcpleased 30156 156053 0 0 3 0x14200 bored smr 49048 404864 0 0 2 0x14200 zerothread 497 458935 0 0 3 0x14200 aiodoned aiodoned 75070 512795 0 0 3 0x14200 syncer update 40108 265855 0 0 3 0x14200 cleaner cleaner 48330 117411 0 0 3 0x14200 reaper reaper 94078 498229 0 0 3 0x14200 pgdaemon pagedaemon 66387 300713 0 0 3 0x14200 bored viomb 46124 288996 0 0 3 0x40014200 acpi0 acpi0 60964 355643 0 0 3 0x40014200 idle1 38469 141036 0 0 3 0x14200 bored softnet3 72521 443529 0 0 3 0x14200 bored softnet2 3435 208878 0 0 3 0x14200 bored softnet1 82354 371707 0 0 3 0x14200 bored softnet0 86546 456354 0 0 3 0x14200 bored systqmp 84113 68086 0 0 3 0x14200 bored systq 24897 150484 0 0 3 0x40014200 bored softclock 35662 185299 0 0 3 0x40014200 idle0 1 172722 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 (0xffffffff82c529f0) #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:257 #6 fork1+0x318 sys/kern/kern_fork.c:383 #7 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #7 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #8 Xsyscall+0x128 Process 57473 (syz-executor.1) thread 0xffff8000212a2ff8 (103405) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82d48e70) #0 witness_lock+0x447 #1 syscall+0x5cd mi_syscall sys/sys/syscall_mi.h:110 [inline] #1 syscall+0x5cd sys/arch/amd64/amd64/trap.c:623 #2 Xsyscall+0x128 exclusive mutex fdescpl r = 0 (0xffffffff82c529f0) #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:257 #6 fork1+0x318 sys/kern/kern_fork.c:383 #7 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #7 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #8 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10221 6413K 6420K 78643K 11385 0 pcb 13 16K 20K 78643K 19 0 rtable 242 6K 7K 78643K 1443 0 pf 29 8K 8K 78643K 85 0 ifaddr 44 15K 16K 78643K 162 0 ifgroup 50 2K 2K 78643K 162 0 sysctl 3 1K 1K 78643K 3 0 counters 60 35K 35K 78643K 116 0 ioctlops 0 0K 2K 78643K 368 0 iov 0 0K 20K 78643K 1136 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1279 80K 80K 78643K 6537 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 213 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 4949 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 17 61K 125K 78643K 13582 0 sigio 0 0K 0K 78643K 201 0 proc 56 78K 103K 78643K 2052 0 subproc 104 6K 6K 78643K 468 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 4006 0 in_multi 99 7K 7K 78643K 755 0 ether_multi 1 0K 0K 78643K 3 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 265 1182K 1182K 78643K 265 0 exec 0 0K 1K 78643K 1910 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 393 92K 102K 78643K 132827 0 UVM aobj 131 4K 4K 78643K 134 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 314 0 NDP 11 0K 2K 78643K 111 0 temp 74 5920K 6048K 78643K 35867 0 kqueue 12 18K 36K 78643K 961 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 1048 0 1045 20 19 1 5 0 8 0 rtentry 112 445 0 331 4 0 4 4 0 8 0 unpcb 144 9747 0 9734 94 92 2 9 0 8 1 syncache 304 137 0 137 23 22 1 1 0 8 1 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 167 0 167 17 17 0 1 0 8 0 tcpcb 808 7348 0 7342 187 179 8 21 0 8 7 arp 120 79 0 60 1 0 1 1 0 8 0 ipq 40 93 0 93 8 8 0 1 0 8 0 ipqe 40 351 0 351 8 8 0 1 0 8 0 inpcb 368 13940 0 13928 207 199 8 19 0 8 6 nd6 136 129 0 102 1 0 1 1 0 8 0 kcovpl 48 36 0 28 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1781 0 1317 36 6 30 30 0 8 0 art_table 32 1782 0 1317 4 0 4 4 0 8 0 art_node 16 444 0 340 1 0 1 1 0 8 0 semapl 112 4947 0 4937 1 0 1 1 0 8 0 shmpl 112 131 0 3 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 21503 0 20061 91 0 91 91 0 8 0 ffsino 272 21503 0 20061 97 0 97 97 0 8 0 nchpl 144 39341 0 37706 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 139504 0 139504 9 8 1 2 0 8 1 percpumem 16 71 0 28 1 0 1 1 0 8 0 kstatmem 264 78 0 56 2 0 2 2 0 8 0 scxspl 216 108598 0 108598 58 55 3 8 1 8 3 plimitpl 152 1809 0 1787 14 13 1 2 0 8 0 sigapl 424 13822 0 13776 7 0 7 7 0 8 0 futexpl 64 113807 0 113807 7 6 1 1 0 8 1 knotepl 120 1000 0 0 11 1 10 10 0 8 0 kqueuepl 216 2256 0 2247 37 36 1 5 0 8 0 pipepl 320 2430 0 2402 69 66 3 8 0 8 0 fdescpl 496 13804 0 13776 7 2 5 6 0 8 0 pool(0xffffffff82c529e0:fdescpl): page inconsistency: page 0xfffffd80672c5000; 2 on list, 5 missing, 8 items per page filepl 152 101150 0 100917 146 126 20 22 0 8 6 lockfpl 104 1779 0 1777 3 2 1 2 0 8 0 lockfspl 48 450 0 448 1 0 1 1 0 8 0 sessionpl 144 51 0 35 1 0 1 1 0 8 0 pgrppl 48 126 0 110 1 0 1 1 0 8 0 ucredpl 104 27459 0 27441 1 0 1 1 0 8 0 zombiepl 144 13776 0 13776 1 0 1 1 0 8 1 processpl 1072 13823 0 13776 5 1 4 5 0 8 0 procpl 680 36695 0 36632 38 30 8 8 0 8 1 sosppl 168 142 0 142 20 19 1 1 0 8 1 sockpl 488 26454 0 26426 478 465 13 45 0 8 8 mcl64k 65536 24 0 0 3 0 3 3 0 8 0 mcl16k 16384 25 0 0 3 0 3 3 0 8 0 mcl12k 12288 28 0 0 2 0 2 2 0 8 0 mcl9k 9216 30 0 0 2 1 1 2 0 8 0 mcl8k 8192 33 0 0 3 0 3 3 0 8 0 mcl4k 4096 63 0 0 4 1 3 4 0 8 0 mcl2k2 2112 18 0 0 2 0 2 2 0 8 0 mcl2k 2048 370 0 0 29 16 13 29 0 8 0 mtagpl 96 5 0 0 1 0 1 1 0 8 0 mbufpl 256 1667 0 0 56 0 56 56 0 8 0 bufpl 288 24954 0 18625 453 0 453 453 0 8 0 anonpl 24 1384947 0 1373731 242 156 86 97 0 186 0 amapchunkpl 152 420959 0 420210 135 95 40 49 0 158 2 amappl16 200 27588 0 27323 171 155 16 28 0 8 0 amappl15 192 13 0 13 1 1 0 1 0 8 0 amappl14 184 242 0 227 2 1 1 2 0 8 0 amappl13 176 18 0 18 4 4 0 1 0 8 0 amappl12 168 14861 0 14826 3 1 2 3 0 8 0 amappl11 160 61 0 49 1 0 1 1 0 8 0 amappl10 152 74 0 62 1 0 1 1 0 8 0 amappl9 144 213 0 213 16 16 0 1 0 8 0 amappl8 136 742 0 573 6 0 6 6 0 8 0 amappl7 128 127 0 113 2 1 1 2 0 8 0 amappl6 120 541 0 526 2 1 1 2 0 8 0 amappl5 112 511 0 503 1 0 1 1 0 8 0 amappl4 104 930 0 887 2 0 2 2 0 8 0 amappl3 96 82304 0 82238 4 1 3 4 0 8 0 amappl2 88 14774 0 14695 3 1 2 3 0 8 0 amappl1 80 57453 0 56934 22 9 13 22 0 8 0 amappl 88 131704 0 131491 7 0 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 72 133 0 3 3 0 3 3 0 8 0 uaddrrnd 24 13804 0 13776 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 13804 0 13776 1 0 1 1 0 8 0 vmmpekpl 168 104198 0 104145 3 0 3 3 0 8 0 vmmpepl 168 801889 0 799751 312 199 113 138 0 357 0 vmsppl 464 13803 0 13776 7 2 5 6 0 8 0 rwobjpl 56 200139 0 192724 118 9 109 110 0 8 0 pdppl 4096 27616 0 27552 672 592 80 96 0 8 16 pvpl 32 3976840 0 3959907 597 439 158 360 0 265 0 pmappl 248 13803 0 13776 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1895 0 1033 26 0 26 26 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffffffff82bfcff0) 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(ffffffff82d48c68) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d48c68) at __mp_lock+0x122 sys/kern/kern_lock.c:147 softintr_dispatch(0) at softintr_dispatch+0x52 sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x27 __sanitizer_cov_trace_const_cmp4(fffffd806f1af1b0,fffffd806f1af1b0) at __sanitizer_cov_trace_const_cmp4+0xb sys/dev/kcov.c:234 kqueue_sleep(fffffd806f1af1b0,ffff800027d88f90) at kqueue_sleep+0x107 sys/kern/kern_event.c:1339 kqueue_scan(ffff800027d88d90,8,ffff800027d88e90,ffff800027d88f90,ffff8000212682c8,ffff800027d88fec) at kqueue_scan+0x1bb sys/kern/kern_event.c:1394 sys_kevent(ffff8000212682c8,ffff800027d89050,ffff800027d890a0) at sys_kevent+0x4b4 sys/kern/kern_event.c:1062 syscall(ffff800027d89120) at syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff800027d89120) at syscall+0x606 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x279c745e0, count: 3 ddb{0}> trace x86_ipi_db(ffffffff82bfcff0) 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(ffffffff82d48c68) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d48c68) at __mp_lock+0x122 sys/kern/kern_lock.c:147 softintr_dispatch(0) at softintr_dispatch+0x52 sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x27 __sanitizer_cov_trace_const_cmp4(fffffd806f1af1b0,fffffd806f1af1b0) at __sanitizer_cov_trace_const_cmp4+0xb sys/dev/kcov.c:234 kqueue_sleep(fffffd806f1af1b0,ffff800027d88f90) at kqueue_sleep+0x107 sys/kern/kern_event.c:1339 kqueue_scan(ffff800027d88d90,8,ffff800027d88e90,ffff800027d88f90,ffff8000212682c8,ffff800027d88fec) at kqueue_scan+0x1bb sys/kern/kern_event.c:1394 sys_kevent(ffff8000212682c8,ffff800027d89050,ffff800027d890a0) at sys_kevent+0x4b4 sys/kern/kern_event.c:1062 syscall(ffff800027d89120) at syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff800027d89120) at syscall+0x606 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x279c745e0, count: -12 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(ffffffff8280bdc4) at panic+0x17b sys/kern/subr_prf.c:198 pool_do_get(ffffffff82c529e0,9,ffff800026177188) at pool_do_get+0x484 sys/kern/subr_pool.c:739 pool_get(ffffffff82c529e0,9) at pool_get+0xed sys/kern/subr_pool.c:582 fdcopy(ffff800027d91508) at fdcopy+0x48 fdinit sys/kern/kern_descrip.c:1067 [inline] fdcopy(ffff800027d91508) at fdcopy+0x48 sys/kern/kern_descrip.c:1106 process_new(ffff8000211ee808,ffff800027d91508,1) at process_new+0x2bc sys/kern/kern_fork.c:257 fork1(ffff8000212a2ff8,1,ffffffff8108bf70,0,ffff8000261773e0,0) at fork1+0x318 sys/kern/kern_fork.c:383 syscall(ffff800026177460) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff800026177460) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x76dd065b3730, count: 6 ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8280bdc4) at panic+0x17b sys/kern/subr_prf.c:198 pool_do_get(ffffffff82c529e0,9,ffff800026177188) at pool_do_get+0x484 sys/kern/subr_pool.c:739 pool_get(ffffffff82c529e0,9) at pool_get+0xed sys/kern/subr_pool.c:582 fdcopy(ffff800027d91508) at fdcopy+0x48 fdinit sys/kern/kern_descrip.c:1067 [inline] fdcopy(ffff800027d91508) at fdcopy+0x48 sys/kern/kern_descrip.c:1106 process_new(ffff8000211ee808,ffff800027d91508,1) at process_new+0x2bc sys/kern/kern_fork.c:257 fork1(ffff8000212a2ff8,1,ffffffff8108bf70,0,ffff8000261773e0,0) at fork1+0x318 sys/kern/kern_fork.c:383 syscall(ffff800026177460) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff800026177460) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x76dd065b3730, count: -9