panic: pool_do_get: fdescpl free list modified: page 0xfffffd807e872000; item addr 0xfffffd807e872010; offset 0x48=0xdead4113 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 493748 8280 32767 0x10 0 0 syz-executor.7 *201766 8114 32767 0x10 0 1K syz-executor.3 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827b8469) at panic+0x177 sys/kern/subr_prf.c:198 pool_do_get(ffffffff82d97620,9,ffff800022ce5118) at pool_do_get+0x474 sys/kern/subr_pool.c:739 pool_get(ffffffff82d97620,9) at pool_get+0xe9 sys/kern/subr_pool.c:582 fdcopy(ffff80002122e9f0) at fdcopy+0x44 fdinit sys/kern/kern_descrip.c:1067 [inline] fdcopy(ffff80002122e9f0) at fdcopy+0x44 sys/kern/kern_descrip.c:1106 process_new(ffff8000212d3390,ffff80002122e9f0,1) at process_new+0x2bc sys/kern/kern_fork.c:255 fork1(ffff8000212298a0,1,ffffffff81fcf700,0,ffff800022ce5360,0) at fork1+0x30b sys/kern/kern_fork.c:379 syscall(ffff800022ce53e0) at syscall+0x555 mi_syscall sys/sys/syscall_mi.h:113 [inline] syscall(ffff800022ce53e0) at syscall+0x555 sys/arch/amd64/amd64/trap.c:626 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff77f0, 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 0xfffffd807e872000; item addr 0xfffffd807e872010; offset 0x48=0xdead4113 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827b8469) at panic+0x177 sys/kern/subr_prf.c:198 pool_do_get(ffffffff82d97620,9,ffff800022ce5118) at pool_do_get+0x474 sys/kern/subr_pool.c:739 pool_get(ffffffff82d97620,9) at pool_get+0xe9 sys/kern/subr_pool.c:582 fdcopy(ffff80002122e9f0) at fdcopy+0x44 fdinit sys/kern/kern_descrip.c:1067 [inline] fdcopy(ffff80002122e9f0) at fdcopy+0x44 sys/kern/kern_descrip.c:1106 process_new(ffff8000212d3390,ffff80002122e9f0,1) at process_new+0x2bc sys/kern/kern_fork.c:255 fork1(ffff8000212298a0,1,ffffffff81fcf700,0,ffff800022ce5360,0) at fork1+0x30b sys/kern/kern_fork.c:379 syscall(ffff800022ce53e0) at syscall+0x555 mi_syscall sys/sys/syscall_mi.h:113 [inline] syscall(ffff800022ce53e0) at syscall+0x555 sys/arch/amd64/amd64/trap.c:626 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff77f0, count: -9 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800022ce4f60 rbx 0xffff800020d69b8f rdx 0 rcx 0 rax 0xffff8000212298a0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xa52251e6b2cacab3 r11 0x3f310be962b64681 r12 0xffff800020d69990 r13 0 r14 0 r15 0x1 rip 0xffffffff811a75f8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800022ce4f50 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.3) pid=201766 stat=onproc flags process=10 proc=0 pri=16, usrpri=74, nice=20 forw=0xffffffffffffffff, list=0xffff800021228598,0xffff800021228038 process=0xffff80002122e9f0 user=0xffff800022ce0000, vmspace=0xfffffd806b295d00 estcpu=36, cpticks=2, pctcpu=0.4 user=0, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 8280 493748 68068 32767 7 0x10 syz-executor.7 34496 117834 90593 32767 2 0x10 syz-executor.1 95614 442450 87381 32767 3 0x90 nanoslp syz-executor.0 95614 403000 87381 32767 3 0x4000010 fdlock syz-executor.0 95614 460313 87381 32767 3 0x4000090 fsleep syz-executor.0 21169 322310 94213 32767 2 0x10 syz-executor.2 94213 355997 61382 0 3 0x82 wait syz-executor.2 29661 392746 99934 32767 2 0x90 syz-executor.6 99934 224432 61382 0 3 0x82 wait syz-executor.6 68068 218006 76497 32767 2 0x10 syz-executor.7 76497 77438 61382 0 3 0x82 wait syz-executor.7 60024 434571 0 0 3 0x14200 bored sosplice 69323 278381 61163 32767 2 0x90 syz-executor.5 61163 467191 61382 0 3 0x82 wait syz-executor.5 94997 298814 35771 32767 3 0x90 piperd syz-executor.4 35771 345246 61382 0 3 0x82 wait syz-executor.4 * 8114 201766 77784 32767 7 0x10 syz-executor.3 77784 292372 61382 0 3 0x82 wait syz-executor.3 90593 174135 98240 32767 3 0x90 nanoslp syz-executor.1 87381 493918 81117 32767 3 0x90 nanoslp syz-executor.0 98240 316347 61382 0 3 0x82 wait syz-executor.1 81117 90297 61382 0 3 0x82 wait syz-executor.0 61382 364559 33720 0 3 0x82 thrsleep syz-fuzzer 61382 227333 33720 0 3 0x4000082 nanoslp syz-fuzzer 61382 108336 33720 0 3 0x4000082 wait syz-fuzzer 61382 381160 33720 0 3 0x4000082 wait syz-fuzzer 61382 461888 33720 0 3 0x4000082 wait syz-fuzzer 61382 187347 33720 0 3 0x4000082 wait syz-fuzzer 61382 216394 33720 0 3 0x4000082 thrsleep syz-fuzzer 61382 178649 33720 0 3 0x4000082 thrsleep syz-fuzzer 61382 477430 33720 0 3 0x4000082 thrsleep syz-fuzzer 61382 132445 33720 0 3 0x4000082 wait syz-fuzzer 61382 461222 33720 0 2 0x4000002 syz-fuzzer 61382 47119 33720 0 3 0x4000082 wait syz-fuzzer 61382 469417 33720 0 3 0x4000082 wait syz-fuzzer 61382 77329 33720 0 3 0x4000082 thrsleep syz-fuzzer 61382 377516 33720 0 3 0x4000082 wait syz-fuzzer 61382 110822 33720 0 2 0x4000082 syz-fuzzer 33720 399979 4000 0 3 0x10008a sigsusp ksh 4000 235087 63182 0 2 0x12 sshd 84942 444358 1 0 3 0x100083 ttyin getty 63182 208167 1 0 3 0x88 kqread sshd 77648 194282 11274 73 3 0x1100090 kqread syslogd 11274 227029 1 0 3 0x100082 netio syslogd 22620 222942 1 0 3 0x100080 kqread resolvd 39418 514572 75817 77 3 0x100092 kqread dhcpleased 53637 376308 75817 77 3 0x100092 kqread dhcpleased 75817 326880 1 0 3 0x80 kqread dhcpleased 80853 365830 0 0 3 0x14200 bored smr 39273 434585 0 0 2 0x14200 zerothread 40807 187296 0 0 3 0x14200 aiodoned aiodoned 28847 139982 0 0 3 0x14200 syncer update 47801 102583 0 0 3 0x14200 cleaner cleaner 74905 163468 0 0 3 0x14200 reaper reaper 2661 32367 0 0 3 0x14200 pgdaemon pagedaemon 9585 135385 0 0 3 0x14200 bored viomb 62068 513258 0 0 3 0x40014200 acpi0 acpi0 37136 451520 0 0 3 0x40014200 idle1 91487 118011 0 0 3 0x14200 bored softnet 90675 171185 0 0 3 0x14200 bored softnet 32851 57761 0 0 3 0x14200 bored softnet 59633 440395 0 0 3 0x14200 bored softnet 4594 477374 0 0 3 0x14200 bored systqmp 58004 108910 0 0 3 0x14200 bored systq 88947 507228 0 0 3 0x40014200 bored softclock 93681 241551 0 0 3 0x40014200 idle0 1 201182 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 (0xffffffff82d97630) #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+0x555 mi_syscall sys/sys/syscall_mi.h:113 [inline] #7 syscall+0x555 sys/arch/amd64/amd64/trap.c:626 #8 Xsyscall+0x128 Process 8280 (syz-executor.7) thread 0xffff8000212d2b68 (493748) exclusive rwlock vmmaplk r = 0 (0xfffffd8069226db0) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 vm_map_lock_ln+0xda sys/uvm/uvm_map.c:5332 #3 uvmfault_lookup+0xa6 sys/uvm/uvm_fault.c:1767 #4 uvm_fault_check+0x65d uvmfault_amapcopy sys/uvm/uvm_fault.c:236 [inline] #4 uvm_fault_check+0x65d sys/uvm/uvm_fault.c:711 #5 uvm_fault+0xf2 sys/uvm/uvm_fault.c:601 #6 upageflttrap+0x85 sys/arch/amd64/amd64/trap.c:186 #7 usertrap+0x204 sys/arch/amd64/amd64/trap.c:438 #8 recall_trap+0x8 Process 95614 (syz-executor.0) thread 0xffff8000212d2340 (403000) exclusive rwlock sysctllk r = 0 (0xffffffff82bcd050) #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+0x555 mi_syscall sys/sys/syscall_mi.h:113 [inline] #3 syscall+0x555 sys/arch/amd64/amd64/trap.c:626 #4 Xsyscall+0x128 Process 8114 (syz-executor.3) thread 0xffff8000212298a0 (201766) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82cc2810) #0 witness_lock+0x44d #1 syscall+0x53d mi_syscall sys/sys/syscall_mi.h:112 [inline] #1 syscall+0x53d sys/arch/amd64/amd64/trap.c:626 #2 Xsyscall+0x128 exclusive mutex fdescpl r = 0 (0xffffffff82d97630) #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+0x555 mi_syscall sys/sys/syscall_mi.h:113 [inline] #7 syscall+0x555 sys/arch/amd64/amd64/trap.c:626 #8 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10227 6413K 6421K 78643K 11337 0 pcb 13 12K 14K 78643K 17 0 rtable 240 6K 7K 78643K 988 0 ifaddr 73 24K 24K 78643K 113 0 sysctl 3 1K 1K 78643K 3 0 counters 60 35K 35K 78643K 72 0 ioctlops 0 0K 2K 78643K 78 0 iov 0 0K 32K 78643K 1378 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1272 80K 80K 78643K 2230 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 53 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 3013 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 21 77K 121K 78643K 5295 0 sigio 0 0K 0K 78643K 95 0 proc 56 78K 103K 78643K 940 0 subproc 104 6K 6K 78643K 182 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 1 0K 0K 78643K 1264 0 in_multi 99 6K 6K 78643K 233 0 ether_multi 1 0K 0K 78643K 12 0 mrt 2 0K 0K 78643K 2 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 235 1049K 1049K 78643K 235 0 exec 0 0K 1K 78643K 950 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 337 90K 987K 78643K 38604 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 183 0 NDP 11 0K 2K 78643K 45 0 temp 125 5775K 5902K 78643K 16164 0 kqueue 12 18K 26K 78643K 492 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 120 416 0 413 5 3 2 3 0 8 1 rtentry 112 185 0 72 4 0 4 4 0 8 0 unpcb 144 4457 0 4443 37 36 1 8 0 8 0 syncache 296 45 0 45 9 9 0 1 0 8 0 tcpqe 32 219 0 219 8 8 0 1 0 8 0 tcpcb 776 2907 0 2898 49 44 5 15 0 8 4 arp 120 31 0 12 1 0 1 1 0 8 0 ipq 40 3 0 2 2 1 1 1 0 8 0 ipqe 40 10 0 9 2 1 1 1 0 8 0 inpcb 368 12026 0 12011 98 88 10 21 0 8 7 ip6q 72 2 0 2 1 1 0 1 0 8 0 ip6af 40 6 0 6 1 1 0 1 0 8 0 nd6 48 49 0 23 1 0 1 1 0 8 0 kcovpl 48 14 0 6 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 764 0 299 30 0 30 30 0 8 0 art_table 32 765 0 299 4 0 4 4 0 8 0 art_node 16 184 0 81 1 0 1 1 0 8 0 sysvmsgpl 40 56 0 44 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 2973 0 2963 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 8284 0 6834 91 0 91 91 0 8 0 ffsino 272 8284 0 6834 98 0 98 98 0 8 0 nchpl 144 15288 0 13659 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 53163 0 53163 3 2 1 2 0 8 1 percpumem 16 49 0 6 1 0 1 1 0 8 0 kstatmem 264 34 0 12 2 0 2 2 0 8 0 scxspl 216 50011 0 50011 21 17 4 8 0 8 4 plimitpl 152 1163 0 1140 13 12 1 2 0 8 0 sigapl 424 5571 0 5521 7 0 7 7 0 8 0 futexpl 64 62908 0 62907 2 1 1 1 0 8 0 knotepl 120 391 0 0 9 1 8 8 0 8 0 kqueuepl 216 2175 0 2167 37 36 1 8 0 8 0 pipepl 320 1307 0 1279 42 34 8 10 0 8 5 fdescpl 496 5553 0 5521 7 2 5 6 0 8 0 pool(0xffffffff82d97620:fdescpl): page inconsistency: page 0xfffffd807e872000; 5 on list, 2 missing, 8 items per page filepl 152 44369 0 44132 63 47 16 20 0 8 6 lockfpl 104 525 0 523 1 0 1 1 0 8 0 lockfspl 48 192 0 190 1 0 1 1 0 8 0 sessionpl 144 29 0 13 1 0 1 1 0 8 0 pgrppl 48 258 0 242 1 0 1 1 0 8 0 ucredpl 104 6591 0 6573 1 0 1 1 0 8 0 zombiepl 144 5521 0 5521 1 0 1 1 0 8 1 processpl 1072 5572 0 5521 5 1 4 5 0 8 0 procpl 696 15677 0 15609 18 10 8 9 0 8 0 sosppl 168 93 0 92 7 6 1 1 0 8 0 sockpl 488 17076 0 17046 281 269 12 38 0 8 6 mcl64k 65536 18 0 0 3 0 3 3 0 8 0 mcl16k 16384 25 0 0 4 1 3 3 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 14 0 0 1 0 1 1 0 8 0 mcl8k 8192 25 0 0 3 0 3 3 0 8 0 mcl4k 4096 25 0 0 3 0 3 3 0 8 0 mcl2k2 2112 6 0 0 1 0 1 1 0 8 0 mcl2k 2048 319 0 0 34 2 32 34 0 8 0 mtagpl 96 6 0 0 1 0 1 1 0 8 0 mbufpl 256 1452 0 0 83 0 83 83 0 8 0 bufpl 288 12760 0 6439 452 0 452 452 0 8 0 anonpl 24 1144481 0 1130811 167 64 103 115 0 186 7 amapchunkpl 152 337534 0 336840 4447 4286 161 4422 0 158 129 amappl16 200 11644 0 11273 65 42 23 33 0 8 2 amappl15 192 29 0 28 1 0 1 1 0 8 0 amappl14 184 157 0 146 2 0 2 2 0 8 0 amappl13 176 19 0 19 5 5 0 1 0 8 0 amappl12 168 470 0 466 1 0 1 1 0 8 0 amappl11 160 47 0 37 1 0 1 1 0 8 0 amappl10 152 46 0 35 1 0 1 1 0 8 0 amappl9 144 1015 0 1014 2 1 1 1 0 8 0 amappl8 136 321 0 234 4 0 4 4 0 8 0 amappl7 128 186 0 158 2 0 2 2 0 8 0 amappl6 120 234 0 216 1 0 1 1 0 8 0 amappl5 112 230 0 224 1 0 1 1 0 8 0 amappl4 104 629 0 598 2 1 1 2 0 8 0 amappl3 96 16572 0 16524 2 0 2 2 0 8 0 amappl2 88 6179 0 6103 3 1 2 3 0 8 0 amappl1 80 129060 0 128361 22 4 18 22 0 8 0 amappl 88 37855 0 37662 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 72 133 0 3 3 0 3 3 0 8 0 uaddrrnd 24 5553 0 5521 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 5553 0 5521 1 0 1 1 0 8 0 vmmpekpl 168 47975 0 47919 4 0 4 4 0 8 0 vmmpepl 168 518004 0 515367 192 51 141 148 0 357 6 vmsppl 368 5552 0 5521 4 0 4 4 0 8 0 rwobjpl 56 144522 0 137001 113 4 109 112 0 8 0 pdppl 4096 11113 0 11042 185 104 81 93 0 8 10 pvpl 32 2312369 0 2292957 340 135 205 259 0 265 30 pmappl 248 5552 0 5521 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1098 0 199 26 0 26 26 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff82bd1ff0) 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(ffffffff82cc2608) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82cc2608) at __mp_lock+0x133 sys/kern/kern_lock.c:147 intr_handler(ffff8000230f4e90,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(ffffffff82cc2608) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82cc2608) at __mp_lock+0x133 sys/kern/kern_lock.c:147 syscall(ffff8000230f5070) at syscall+0x53d mi_syscall sys/sys/syscall_mi.h:112 [inline] syscall(ffff8000230f5070) at syscall+0x53d sys/arch/amd64/amd64/trap.c:626 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcc360, count: 4 ddb{0}> trace x86_ipi_db(ffffffff82bd1ff0) 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(ffffffff82cc2608) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82cc2608) at __mp_lock+0x133 sys/kern/kern_lock.c:147 intr_handler(ffff8000230f4e90,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(ffffffff82cc2608) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82cc2608) at __mp_lock+0x133 sys/kern/kern_lock.c:147 syscall(ffff8000230f5070) at syscall+0x53d mi_syscall sys/sys/syscall_mi.h:112 [inline] syscall(ffff8000230f5070) at syscall+0x53d sys/arch/amd64/amd64/trap.c:626 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcc360, count: -11 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(ffffffff827b8469) at panic+0x177 sys/kern/subr_prf.c:198 pool_do_get(ffffffff82d97620,9,ffff800022ce5118) at pool_do_get+0x474 sys/kern/subr_pool.c:739 pool_get(ffffffff82d97620,9) at pool_get+0xe9 sys/kern/subr_pool.c:582 fdcopy(ffff80002122e9f0) at fdcopy+0x44 fdinit sys/kern/kern_descrip.c:1067 [inline] fdcopy(ffff80002122e9f0) at fdcopy+0x44 sys/kern/kern_descrip.c:1106 process_new(ffff8000212d3390,ffff80002122e9f0,1) at process_new+0x2bc sys/kern/kern_fork.c:255 fork1(ffff8000212298a0,1,ffffffff81fcf700,0,ffff800022ce5360,0) at fork1+0x30b sys/kern/kern_fork.c:379 syscall(ffff800022ce53e0) at syscall+0x555 mi_syscall sys/sys/syscall_mi.h:113 [inline] syscall(ffff800022ce53e0) at syscall+0x555 sys/arch/amd64/amd64/trap.c:626 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff77f0, count: 6 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827b8469) at panic+0x177 sys/kern/subr_prf.c:198 pool_do_get(ffffffff82d97620,9,ffff800022ce5118) at pool_do_get+0x474 sys/kern/subr_pool.c:739 pool_get(ffffffff82d97620,9) at pool_get+0xe9 sys/kern/subr_pool.c:582 fdcopy(ffff80002122e9f0) at fdcopy+0x44 fdinit sys/kern/kern_descrip.c:1067 [inline] fdcopy(ffff80002122e9f0) at fdcopy+0x44 sys/kern/kern_descrip.c:1106 process_new(ffff8000212d3390,ffff80002122e9f0,1) at process_new+0x2bc sys/kern/kern_fork.c:255 fork1(ffff8000212298a0,1,ffffffff81fcf700,0,ffff800022ce5360,0) at fork1+0x30b sys/kern/kern_fork.c:379 syscall(ffff800022ce53e0) at syscall+0x555 mi_syscall sys/sys/syscall_mi.h:113 [inline] syscall(ffff800022ce53e0) at syscall+0x555 sys/arch/amd64/amd64/trap.c:626 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff77f0, count: -9