uvm_fault(0xfffffd806bb4d588, 0x7, 0, 1) -> e kernel: page fault trap, code=0 Stopped at witness_checkorder+0x1ec: movl 0x8(%r14),%ebx TID PID UID PRFLAGS PFLAGS CPU COMMAND 474470 65934 32767 0x10 0 0 syz-executor.0 witness_checkorder(fffffd80788590e8,9,0) at witness_checkorder+0x1ec sys/kern/subr_witness.c:794 mtx_enter(fffffd80788590d8) at mtx_enter+0x3e sys/kern/kern_lock.c:265 knote_remove(ffff8000212cfa90,fffffd80788590d8,fffffd8078859160,3,0) at knote_remove+0x20d sys/kern/kern_event.c:1881 knote_fdclose(ffff8000212cfa90,3) at knote_fdclose+0xae sys/kern/kern_event.c:1934 fdfree(ffff8000212cfa90) at fdfree+0xdf sys/kern/kern_descrip.c:1196 exit1(ffff8000212cfa90,0,0,1) at exit1+0x3e4 sys/kern/kern_exit.c:206 sys_exit(ffff8000212cfa90,ffff80002cdf4f50,ffff80002cdf4fa0) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002cdf5020) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002cdf5020) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x740a4c9fe750, 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: uvm_fault(0xfffffd806bb4d588, 0x7, 0, 1) -> e ddb{1}> trace witness_checkorder(fffffd80788590e8,9,0) at witness_checkorder+0x1ec sys/kern/subr_witness.c:794 mtx_enter(fffffd80788590d8) at mtx_enter+0x3e sys/kern/kern_lock.c:265 knote_remove(ffff8000212cfa90,fffffd80788590d8,fffffd8078859160,3,0) at knote_remove+0x20d sys/kern/kern_event.c:1881 knote_fdclose(ffff8000212cfa90,3) at knote_fdclose+0xae sys/kern/kern_event.c:1934 fdfree(ffff8000212cfa90) at fdfree+0xdf sys/kern/kern_descrip.c:1196 exit1(ffff8000212cfa90,0,0,1) at exit1+0x3e4 sys/kern/kern_exit.c:206 sys_exit(ffff8000212cfa90,ffff80002cdf4f50,ffff80002cdf4fa0) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002cdf5020) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002cdf5020) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x740a4c9fe750, count: -9 ddb{1}> show registers rdi 0 rsi 0x20000 acpi_pdirpa+0xbe63 rbp 0xffff80002cdf4cf0 rbx 0xe rdx 0 rcx 0xffff8000212cfa90 rax 0xffff800020d58ff0 r8 0x7f7fffffc000 r9 0x1 r10 0xc6adb54542498a56 r11 0x2bef9bb26a80cc8e r12 0 r13 0xfffffd80788590e8 r14 0xffffffffffffffff r15 0xffff8000212cfa90 rip 0xffffffff826c515c witness_checkorder+0x1ec cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002cdf4c40 ss 0x10 witness_checkorder+0x1ec: movl 0x8(%r14),%ebx ddb{1}> show proc PROC (syz-executor.3) pid=360824 stat=onproc flags process=1018 proc=2000 pri=0, usrpri=81, nice=20 forw=0xffffffffffffffff, list=0xffff800024714d50,0xffff8000212cf2a8 process=0xffff80002121d500 user=0xffff80002cdf0000, vmspace=0xfffffd806bb4d588 estcpu=36, cpticks=3, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 68247 147863 65934 32767 2 0x10 syz-executor.0 24222 109597 60891 32767 2 0x10 syz-executor.6 24222 30266 60891 32767 3 0x4000090 netio syz-executor.6 24222 83948 60891 32767 3 0x4000090 netio syz-executor.6 58825 366016 32584 32767 2 0x10 syz-executor.2 58825 395687 32584 32767 3 0x4000090 fsleep syz-executor.2 39495 231004 45483 32767 3 0x90 nanoslp syz-executor.7 39495 233089 45483 32767 3 0x4000090 kqread syz-executor.7 39495 87623 45483 32767 3 0x4000090 fsleep syz-executor.7 60891 154961 24270 32767 3 0x90 nanoslp syz-executor.6 24270 453855 21521 0 3 0x82 wait syz-executor.6 49753 221472 78366 32767 2 0x10 syz-executor.4 78366 21355 21521 0 3 0x82 wait syz-executor.4 65934 474470 84984 32767 7 0x10 syz-executor.0 84984 425034 21521 0 3 0x82 wait syz-executor.0 93385 104102 69677 32767 3 0x90 nanoslp syz-executor.3 69677 123134 21521 0 3 0x82 wait syz-executor.3 45483 129812 45370 32767 3 0x90 nanoslp syz-executor.7 45370 239616 21521 0 3 0x82 wait syz-executor.7 48464 390261 0 0 3 0x14200 bored sosplice 44394 421348 13124 32767 2 0x10 syz-executor.5 32584 205309 3355 32767 3 0x90 nanoslp syz-executor.2 13124 80327 21521 0 3 0x82 wait syz-executor.5 3355 112994 21521 0 3 0x82 wait syz-executor.2 46056 91193 37235 32767 2 0x10 syz-executor.1 37235 103349 21521 0 3 0x82 wait syz-executor.1 21521 141997 95833 0 3 0x2000082 wait syz-fuzzer 21521 419444 95833 0 3 0x6000082 nanoslp syz-fuzzer 21521 491523 95833 0 3 0x6000082 wait syz-fuzzer 21521 457311 95833 0 3 0x6000082 thrsleep syz-fuzzer 21521 232554 95833 0 3 0x6000082 wait syz-fuzzer 21521 342237 95833 0 3 0x6000082 wait syz-fuzzer 21521 146776 95833 0 3 0x6000082 wait syz-fuzzer 21521 77990 95833 0 3 0x6000082 thrsleep syz-fuzzer 21521 426467 95833 0 3 0x6000082 thrsleep syz-fuzzer 21521 439669 95833 0 3 0x6000082 wait syz-fuzzer 21521 236895 95833 0 3 0x6000082 thrsleep syz-fuzzer 21521 513530 95833 0 3 0x6000082 thrsleep syz-fuzzer 21521 214608 95833 0 3 0x6000082 thrsleep syz-fuzzer 21521 519717 95833 0 3 0x6000082 kqread syz-fuzzer 21521 219863 95833 0 3 0x6000082 wait syz-fuzzer 21521 172999 95833 0 3 0x6000082 wait syz-fuzzer 95833 467794 84340 0 3 0x10008a sigsusp ksh 84340 198310 42785 0 3 0x9a kqread sshd 2344 146005 1 0 3 0x100083 ttyin getty 42785 518527 1 0 3 0x88 kqread sshd 12200 145731 63371 73 3 0x1100090 kqread syslogd 63371 300588 1 0 3 0x100082 netio syslogd 86815 191542 1 0 3 0x100080 kqread resolvd 65708 267514 20743 77 3 0x100092 kqread dhcpleased 12575 99938 20743 77 3 0x100092 kqread dhcpleased 20743 502317 1 0 3 0x80 kqread dhcpleased 57407 321650 0 0 3 0x14200 bored smr 4492 428662 0 0 2 0x14200 zerothread 83836 392733 0 0 3 0x14200 aiodoned aiodoned 17784 364913 0 0 3 0x14200 syncer update 99688 405448 0 0 3 0x14200 cleaner cleaner 80388 77245 0 0 2 0x14200 reaper 83936 12155 0 0 3 0x14200 pgdaemon pagedaemon 92856 267630 0 0 3 0x14200 bored viomb 61642 250422 0 0 3 0x40014200 acpi0 acpi0 69450 224210 0 0 3 0x40014200 idle1 59105 326746 0 0 3 0x14200 bored softnet3 51703 306 0 0 3 0x14200 bored softnet2 82928 165500 0 0 3 0x14200 bored softnet1 39061 43180 0 0 3 0x14200 bored softnet0 33716 103363 0 0 3 0x14200 bored systqmp 26476 345320 0 0 3 0x14200 bored systq 61269 132195 0 0 3 0x40014200 bored softclock 33730 236040 0 0 3 0x40014200 idle0 1 374690 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 44394 (syz-executor.5) thread 0xffff8000212cf7e8 (421348) exclusive rrwlock inode r = 0 (0xfffffd806926e700) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 ufs_ihashins+0x46 sys/ufs/ufs/ufs_ihash.c:140 #5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1343 #6 ffs_inode_alloc+0x1c2 sys/ufs/ffs/ffs_alloc.c:394 #7 ufs_mkdir+0xf8 sys/ufs/ufs/ufs_vnops.c:1149 #8 VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 #9 domkdirat+0x125 sys/kern/vfs_syscalls.c:3073 #10 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #10 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8069be7818) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0xd5 sys/kern/vfs_lookup.c:418 #6 namei+0x55a sys/kern/vfs_lookup.c:250 #7 domkdirat+0x79 sys/kern/vfs_syscalls.c:3058 #8 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #8 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10192 6409K 6420K 78643K 11321 0 pcb 13 16K 18K 78643K 19 0 rtable 244 6K 7K 78643K 1414 0 pf 29 8K 8K 78643K 63 0 ifaddr 44 15K 15K 78643K 116 0 ifgroup 50 2K 2K 78643K 118 0 sysctl 2 0K 0K 78643K 2 0 counters 60 35K 35K 78643K 94 0 ioctlops 0 0K 2K 78643K 79 0 iov 0 0K 16K 78643K 1220 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1279 80K 80K 78643K 3328 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 169 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 1442 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 23 85K 117K 78643K 16771 0 sigio 1 0K 0K 78643K 1270 0 proc 56 78K 103K 78643K 1447 0 subproc 104 6K 6K 78643K 325 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 478 0 in_multi 99 7K 7K 78643K 385 0 ether_multi 1 0K 0K 78643K 9 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 91 413K 413K 78643K 91 0 exec 0 0K 1K 78643K 2184 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 460 95K 111K 78643K 165862 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 244 0 NDP 11 0K 2K 78643K 78 0 temp 74 5920K 6048K 78643K 41705 0 kqueue 13 20K 34K 78643K 982 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 120 451 0 448 5 4 1 3 0 8 0 rtentry 112 313 0 198 4 0 4 4 0 8 0 unpcb 144 8138 0 8123 92 91 1 10 0 8 0 syncache 304 175 0 175 22 21 1 1 0 8 1 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 349 0 349 22 21 1 1 0 8 1 tcpcb 808 34792 0 34740 340 327 13 27 0 8 4 arp 120 56 0 37 1 0 1 1 0 8 0 ipq 40 19 0 18 8 7 1 1 0 8 0 ipqe 40 117 0 116 8 7 1 1 0 8 0 inpcb 368 37760 0 37701 287 275 12 25 0 8 3 nd6 136 86 0 58 2 1 1 2 0 8 0 kcovpl 48 25 0 17 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1242 0 777 34 4 30 30 0 8 0 art_table 32 1243 0 777 4 0 4 4 0 8 0 art_node 16 312 0 207 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 0 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 1436 0 1426 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 21619 0 20156 92 0 92 92 0 8 0 ffsino 272 21619 0 20156 98 0 98 98 0 8 0 nchpl 144 42879 0 41237 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 138488 0 138487 4 3 1 2 0 8 0 percpumem 16 60 0 17 1 0 1 1 0 8 0 kstatmem 264 56 0 34 2 0 2 2 0 8 0 scxspl 216 132683 0 132683 42 41 1 8 1 8 1 plimitpl 152 1415 0 1392 7 5 2 2 0 8 0 sigapl 424 17022 0 16970 7 0 7 7 0 8 0 futexpl 64 155973 0 155971 2 1 1 1 0 8 0 knotepl 120 640 0 0 11 2 9 11 0 8 0 kqueuepl 216 3224 0 3215 57 56 1 5 0 8 0 pipepl 320 5178 0 5149 118 112 6 13 0 8 3 fdescpl 496 17004 0 16970 7 2 5 6 0 8 0 filepl 152 120954 0 120708 164 151 13 22 0 8 2 lockfpl 104 2054 0 2052 2 1 1 2 0 8 0 lockfspl 48 554 0 552 1 0 1 1 0 8 0 sessionpl 144 40 0 24 1 0 1 1 0 8 0 pgrppl 48 202 0 186 1 0 1 1 0 8 0 ucredpl 104 11637 0 11619 1 0 1 1 0 8 0 zombiepl 144 16971 0 16970 1 0 1 1 0 8 0 processpl 1072 17022 0 16970 5 1 4 5 0 8 0 procpl 680 46538 0 46465 30 22 8 8 0 8 1 sosppl 168 166 0 163 17 16 1 1 0 8 0 sockpl 488 47118 0 47044 663 646 17 36 0 8 5 mcl64k 65536 30 0 0 3 0 3 3 0 8 0 mcl16k 16384 25 0 0 3 0 3 3 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 21 0 0 2 0 2 2 0 8 0 mcl8k 8192 33 0 0 3 0 3 3 0 8 0 mcl4k 4096 61 0 0 5 1 4 4 0 8 0 mcl2k2 2112 11 0 0 1 0 1 1 0 8 0 mcl2k 2048 379 0 0 35 12 23 35 0 8 2 mtagpl 96 7 0 0 1 0 1 1 0 8 0 mbufpl 256 1550 0 0 59 0 59 59 0 8 0 bufpl 288 28983 0 22657 453 1 452 453 0 8 0 anonpl 24 1508420 0 1496915 179 96 83 100 0 186 0 amapchunkpl 152 531103 0 530219 106 66 40 52 0 158 1 amappl16 200 27643 0 27354 77 60 17 29 0 8 0 amappl15 192 13 0 12 1 0 1 1 0 8 0 amappl14 184 210 0 194 2 1 1 2 0 8 0 amappl13 176 11 0 11 1 1 0 1 0 8 0 amappl12 168 17864 0 17826 2 0 2 2 0 8 0 amappl11 160 54 0 44 1 0 1 1 0 8 0 amappl10 152 67 0 55 1 0 1 1 0 8 0 amappl9 144 283 0 282 2 1 1 1 0 8 0 amappl8 136 900 0 716 7 0 7 7 0 8 0 amappl7 128 132 0 118 2 0 2 2 0 8 0 amappl6 120 491 0 461 2 1 1 2 0 8 0 amappl5 112 562 0 554 1 0 1 1 0 8 0 amappl4 104 886 0 842 3 1 2 3 0 8 0 amappl3 96 103278 0 103185 18 15 3 4 0 8 0 amappl2 88 17870 0 17791 3 1 2 3 0 8 0 amappl1 80 67728 0 67200 22 9 13 22 0 8 0 amappl 88 164755 0 164494 8 0 8 8 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 17004 0 16970 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 17004 0 16970 1 0 1 1 0 8 0 vmmpekpl 168 139617 0 139560 3 0 3 3 0 8 0 vmmpepl 168 972273 0 969808 258 140 118 131 0 357 0 vmsppl 464 17003 0 16970 7 2 5 6 0 8 0 rwobjpl 56 238312 0 230818 112 3 109 110 0 8 0 pdppl 4096 34015 0 33940 455 374 81 91 0 8 6 pvpl 32 4560593 0 4542922 544 387 157 360 0 265 0 pmappl 248 17003 0 16970 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1908 0 1021 27 0 27 27 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffffffff82c39ff0) 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(ffffffff82c85668) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82c85668) at __mp_lock+0x133 sys/kern/kern_lock.c:147 syscall(ffff80002e40d6b0) at syscall+0x5cd mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002e40d6b0) at syscall+0x5cd sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7e03e1b54ef0, count: 9 ddb{0}> trace x86_ipi_db(ffffffff82c39ff0) 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(ffffffff82c85668) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82c85668) at __mp_lock+0x133 sys/kern/kern_lock.c:147 syscall(ffff80002e40d6b0) at syscall+0x5cd mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002e40d6b0) at syscall+0x5cd sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7e03e1b54ef0, count: -6 ddb{0}> machine ddbcpu 1 Stopped at witness_checkorder+0x1ec: movl 0x8(%r14),%ebx witness_checkorder(fffffd80788590e8,9,0) at witness_checkorder+0x1ec sys/kern/subr_witness.c:794 mtx_enter(fffffd80788590d8) at mtx_enter+0x3e sys/kern/kern_lock.c:265 knote_remove(ffff8000212cfa90,fffffd80788590d8,fffffd8078859160,3,0) at knote_remove+0x20d sys/kern/kern_event.c:1881 knote_fdclose(ffff8000212cfa90,3) at knote_fdclose+0xae sys/kern/kern_event.c:1934 fdfree(ffff8000212cfa90) at fdfree+0xdf sys/kern/kern_descrip.c:1196 exit1(ffff8000212cfa90,0,0,1) at exit1+0x3e4 sys/kern/kern_exit.c:206 sys_exit(ffff8000212cfa90,ffff80002cdf4f50,ffff80002cdf4fa0) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002cdf5020) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002cdf5020) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x740a4c9fe750, count: 6 ddb{1}> trace witness_checkorder(fffffd80788590e8,9,0) at witness_checkorder+0x1ec sys/kern/subr_witness.c:794 mtx_enter(fffffd80788590d8) at mtx_enter+0x3e sys/kern/kern_lock.c:265 knote_remove(ffff8000212cfa90,fffffd80788590d8,fffffd8078859160,3,0) at knote_remove+0x20d sys/kern/kern_event.c:1881 knote_fdclose(ffff8000212cfa90,3) at knote_fdclose+0xae sys/kern/kern_event.c:1934 fdfree(ffff8000212cfa90) at fdfree+0xdf sys/kern/kern_descrip.c:1196 exit1(ffff8000212cfa90,0,0,1) at exit1+0x3e4 sys/kern/kern_exit.c:206 sys_exit(ffff8000212cfa90,ffff80002cdf4f50,ffff80002cdf4fa0) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002cdf5020) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002cdf5020) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x740a4c9fe750, count: -9