kernel: protection fault trap, code=0 Stopped at sys_semop+0x3ae: movzwl 0x8(%rax,%rcx,4),%r15d ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic the kernel did not panic ddb{0}> trace sys_semop(ffff8000ffff8cc8,ffff8000314ba130,ffff8000314ba080) at sys_semop+0x3ae sys/kern/sysv_sem.c:620 syscall(ffff8000314ba130) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000314ba130) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7bf94a1ad80, count: -3 ddb{0}> show registers rdi 0 rsi 0x7562 __ALIGN_SIZE+0x6562 rbp 0xffff8000314ba050 rbx 0 rdx 0 rcx 0x8d8a __ALIGN_SIZE+0x7d8a rax 0xdeafbeaddeafbead r8 0x7f7fffffc000 r9 0 r10 0x766356aa7836194e r11 0x766fbff58a422cec r12 0xffff800001479304 r13 0x7562 __ALIGN_SIZE+0x6562 r14 0xffff8000314ba130 r15 0x7562 __ALIGN_SIZE+0x6562 rip 0xffffffff823dc9be sys_semop+0x3ae cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000314b9f30 ss 0x10 sys_semop+0x3ae: movzwl 0x8(%rax,%rcx,4),%r15d ddb{0}> show proc PROC (syz-executor) tid=241937 pid=86710 tcnt=4 stat=onproc flags process=0 proc=4000000 runpri=50, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffff8a40,0xffff8000ffff8f60 process=0xffff80002a495da0 user=0xffff8000314b5000, vmspace=0xfffffd8067732748 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 86710 378250 56493 0 3 0 futex syz-executor *86710 241937 56493 0 7 0x4000000 syz-executor 86710 321429 56493 0 2 0x4000000 syz-executor 86710 523917 56493 0 2 0x4000000 syz-executor 61486 477941 58979 0 2 0 syz-executor 61486 195397 58979 0 3 0x4000080 fsleep syz-executor 76166 190957 87456 0 2 0 syz-executor 76166 191822 87456 0 3 0x4000080 sbwait syz-executor 82198 275247 46536 0 2 0 syz-executor 82198 159685 46536 0 7 0x4000000 syz-executor 82198 301319 46536 0 2 0x4000000 syz-executor 93107 7075 91744 0 3 0x80 nanoslp syz-executor 93107 479270 91744 0 2 0x4000080 syz-executor 93107 155547 91744 0 3 0x4000080 fsleep syz-executor 46249 452586 0 0 3 0x14200 acct acct 21674 431443 52606 0 2 0x2 syz-executor 41569 223691 1 0 3 0x100083 ttyin getty 87456 449266 52606 0 3 0x82 nanoslp syz-executor 85038 374847 0 0 3 0x14280 nfsidl nfsio 74354 495324 0 0 3 0x14280 nfsidl nfsio 8635 169040 0 0 3 0x14280 nfsidl nfsio 71785 1871 0 0 3 0x14280 nfsidl nfsio 98533 345970 0 0 3 0x14280 nfsidl nfsio 14534 382369 0 0 3 0x14280 nfsidl nfsio 49127 96554 0 0 3 0x14280 nfsidl nfsio 36350 336284 0 0 3 0x14280 nfsidl nfsio 10973 459544 0 0 3 0x14280 nfsidl nfsio 36359 85676 0 0 3 0x14280 nfsidl nfsio 94170 111327 0 0 3 0x14280 nfsidl nfsio 66734 37126 0 0 3 0x14280 nfsidl nfsio 49656 67783 0 0 3 0x14280 nfsidl nfsio 4653 326112 0 0 3 0x14280 nfsidl nfsio 90606 257078 0 0 3 0x14280 nfsidl nfsio 20519 261038 0 0 3 0x14280 nfsidl nfsio 97808 458716 0 0 3 0x14280 nfsidl nfsio 82423 242962 0 0 3 0x14280 nfsidl nfsio 97973 313677 0 0 3 0x14280 nfsidl nfsio 38438 286813 0 0 3 0x14280 nfsidl nfsio 91744 9226 52606 0 3 0x82 nanoslp syz-executor 28430 15390 0 0 3 0x14200 bored sosplice 11831 163728 52606 0 3 0x82 wait syz-executor 58979 213594 52606 0 2 0x482 syz-executor 56493 219633 52606 0 3 0x82 nanoslp syz-executor 79545 175776 52606 0 3 0x82 wait syz-executor 46536 198397 52606 0 3 0x82 nanoslp syz-executor 52606 342218 74064 0 3 0x82 kqread syz-executor 74064 445406 40247 0 3 0x10008a sigsusp ksh 40247 379825 78685 0 3 0x98 kqread sshd-session 78685 339439 40716 0 3 0x92 kqread sshd-session 40716 35108 1 0 3 0x88 kqread sshd 21399 290378 71399 74 3 0x1100092 bpf pflogd 71399 12795 1 0 3 0x80 sbwait pflogd 95637 249634 65794 73 3 0x1100090 kqread syslogd 65794 455582 1 0 3 0x100082 sbwait syslogd 98264 212903 1 0 3 0x100080 kqread resolvd 91060 206763 84521 77 3 0x100092 kqread dhcpleased 84083 476257 84521 77 3 0x100092 kqread dhcpleased 84521 465580 1 0 3 0x80 kqread dhcpleased 99348 228356 0 0 3 0x14200 bored smr 34920 322648 0 0 2 0x14200 zerothread 12434 105275 0 0 3 0x14200 aiodoned aiodoned 36961 181674 0 0 3 0x14200 syncer update 96749 353835 0 0 3 0x14200 cleaner cleaner 81848 263465 0 0 3 0x14200 reaper reaper 71297 247120 0 0 3 0x14200 pgdaemon pagedaemon 36717 442916 0 0 3 0x14200 bored viomb 1685 293429 0 0 3 0x40014200 acpi0 acpi0 5824 399048 0 0 3 0x40014200 idle1 76025 14298 0 0 3 0x14200 bored softnet3 32831 351730 0 0 3 0x14200 bored softnet2 49345 384980 0 0 3 0x14200 bored softnet1 61650 103173 0 0 2 0x14200 softnet0 24124 236954 0 0 3 0x14200 bored systqmp 97773 156650 0 0 3 0x14200 bored systq 78248 370169 0 0 3 0x14200 tmoslp softclockmp 27807 6595 0 0 2 0x40014200 softclock 5716 322242 0 0 3 0x40014200 idle0 1 158419 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 86710 (syz-executor) thread 0xffff8000ffff8cc8 (241937) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff839ad518) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 __mp_acquire_count+0x58 #2 mi_switch+0x4b7 sys/kern/sched_bsd.c:441 #3 yield+0x6a sys/kern/sched_bsd.c:320 #4 malloc+0xe5 sys/kern/kern_malloc.c:174 #5 sys_semop+0x234 sys/kern/sysv_sem.c:564 #6 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 Process 86710 (syz-executor) thread 0xffff8000364ca7d0 (523917) exclusive rwlock futex r = 0 (0xffffffff838374a8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 sys_futex+0x69 sys/kern/sys_futex.c:98 #3 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #3 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #4 Xsyscall+0x128 Process 82198 (syz-executor) thread 0xffff80002a4a3708 (159685) exclusive rrwlock inode r = 0 (0xfffffd806dd02510) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2bd sys/kern/vfs_subr.c:694 #6 cache_lookup+0x36e sys/kern/vfs_cache.c:222 #7 ufs_lookup+0x21b sys/ufs/ufs/ufs_lookup.c:160 #8 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #9 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #10 namei+0x7aa sys/kern/vfs_lookup.c:250 #11 ptm_vn_open+0x40 sys/kern/tty_pty.c:1013 #12 ptmioctl+0x3ab sys/kern/tty_pty.c:1116 #13 VOP_IOCTL+0xac sys/kern/vfs_vops.c:264 #14 vn_ioctl+0xf8 sys/kern/vfs_vnops.c:531 #15 sys_ioctl+0x5c3 #16 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #16 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #17 Xsyscall+0x128 Process 21674 (syz-executor) thread 0xffff80002a4a22c8 (431443) exclusive rrwlock inode r = 0 (0xfffffd806e551518) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2bd sys/kern/vfs_subr.c:694 #6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1201 #8 ufs_lookup+0x19f8 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #11 namei+0x7aa sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1851 #13 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806d2fdcd0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1851 #8 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10232 11050K 11600K 166960K 13435 0 pcb 18 15K 17K 166960K 303 0 rtable 171 7K 8K 166960K 566 0 pf 40 19K 26K 166960K 153 0 ifaddr 36 6K 8K 166960K 96 0 ifgroup 55 2K 2K 166960K 128 0 sysctl 4 1K 1K 166960K 6 0 counters 64 36K 36K 166960K 122 0 ioctlops 0 0K 4K 166960K 1758 0 iov 0 0K 28K 166960K 108 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1425 90K 90K 166960K 2794 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 36 0 VM map 2 1K 1K 166960K 2 0 sem 19 20K 20K 166960K 65 0 dirhash 12 2K 2K 166960K 39 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 17 61K 85K 166960K 1567 0 sigio 0 0K 0K 166960K 30 0 proc 72 91K 128K 166960K 752 0 subproc 72 4K 4K 166960K 99 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 182 0 in_multi 66 5K 7K 166960K 199 0 ether_multi 1 0K 0K 166960K 16 0 mrt 1 0K 0K 166960K 5 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 241 1076K 1076K 166960K 241 0 exec 0 0K 1K 166960K 636 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 4 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 238 73K 86K 166960K 16721 0 UVM aobj 60 6K 6K 166960K 66 0 pinsyscall 42 84K 100K 166960K 2799 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 83 0 NDP 12 0K 2K 166960K 61 0 temp 76 8644K 8886K 166960K 53134 0 kqueue 13 20K 28K 166960K 253 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 24 0 0 1 0 1 1 0 8 0 rtpcb 120 193 0 190 3 2 1 2 0 8 0 rtentry 112 174 0 104 4 0 4 4 0 8 0 unpcb 144 1139 0 1118 9 5 4 4 0 8 3 syncache 336 10 0 10 3 2 1 1 0 8 1 tcpqe 32 5 0 5 3 3 0 1 0 8 0 tcpcb 808 520 0 511 16 14 2 8 0 8 0 arp 120 29 0 12 1 0 1 1 0 8 0 inpcb 376 2018 0 2005 40 29 11 15 0 8 8 nd6 136 34 0 19 1 0 1 1 0 8 0 pkpcb 40 11 0 11 4 3 1 1 0 8 1 kcovpl 48 11 0 3 1 0 1 1 0 8 0 ppxss 1168 18 0 18 4 3 1 1 0 8 1 pppxif 1472 5 0 5 2 2 0 1 0 8 0 pfstscr 40 4 0 4 2 2 0 1 0 8 0 pffrag 232 10 0 2 1 0 1 1 0 482 0 pffrnode 88 10 0 2 1 0 1 1 0 8 0 pffrent 40 17 0 8 1 0 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 2 0 0 1 0 1 1 0 8 0 pfanchor 1288 6 0 1 2 1 1 1 0 8 0 pftag 88 3 0 0 1 0 1 1 0 8 0 pfstitem 24 116 0 57 1 0 1 1 0 8 0 pfstkey 128 189 0 126 3 0 3 3 0 8 0 pfstate 376 150 0 92 7 0 7 7 0 8 0 pfrule 1344 32 0 24 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 763 0 482 32 7 25 29 0 8 0 art_table 32 765 0 482 4 0 4 4 0 8 0 art_node 16 171 0 111 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 1 1 0 1 1 0 8 0 semupl 112 6 0 6 4 3 1 1 0 8 1 semapl 112 59 0 43 1 0 1 1 0 8 0 shmpl 112 63 0 6 2 0 2 2 0 8 0 dirhash 1024 36 0 19 3 0 3 3 0 8 0 dino2pl 256 4196 0 2690 95 0 95 95 0 8 0 ffsino 280 4196 0 2690 109 0 109 109 0 8 0 nchpl 144 6429 0 5825 63 39 24 63 0 8 0 uvmvnodes 80 5202 0 0 107 0 107 107 0 8 0 vnodes 216 5202 0 0 289 0 289 289 0 8 0 namei 1024 22930 0 22930 3 2 1 2 0 8 1 percpumem 16 75 0 29 1 0 1 1 0 8 0 kstatmem 264 68 0 44 2 0 2 2 0 8 0 scsiplug 72 5 0 5 2 2 0 1 0 8 0 scxspl 216 18815 0 18815 11 9 2 8 1 8 2 plimitpl 152 483 0 466 1 0 1 1 0 8 0 sigapl 424 1900 0 1829 10 1 9 9 0 8 0 futexpl 64 21706 0 21703 1 0 1 1 0 8 0 knotepl 120 823 0 0 24 0 24 24 0 8 0 kqueuepl 216 569 0 559 7 6 1 5 0 8 0 pipepl 328 277 0 249 6 3 3 6 0 8 0 fdescpl 504 1860 0 1829 5 0 5 5 0 8 0 filepl 152 13183 0 12958 26 11 15 17 0 8 4 lockfpl 104 863 0 860 4 3 1 2 0 8 0 lockfspl 48 230 0 227 1 0 1 1 0 8 0 sessionpl 144 33 0 24 1 0 1 1 0 8 0 pgrppl 48 64 0 47 1 0 1 1 0 8 0 ucredpl 104 2412 0 2398 1 0 1 1 0 8 0 zombiepl 144 2464 0 2462 1 0 1 1 0 8 0 processpl 1168 1900 0 1829 6 0 6 6 0 8 0 procpl 648 4397 0 4317 9 1 8 8 0 8 0 srpgc 96 11 0 11 5 4 1 1 0 8 1 sosppl 168 17 0 17 5 4 1 1 0 8 1 sockpl 688 3378 0 3341 38 25 13 16 0 8 8 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 110 0 0 14 0 14 14 0 8 0 mcl2k 2048 51 0 0 6 0 6 6 0 8 0 mtagpl 96 107 0 0 3 0 3 3 0 8 0 mbufpl 256 432 0 0 27 0 27 27 0 8 0 bufpl 280 5059 0 139 352 0 352 352 0 8 0 anonpl 24 249770 0 245580 94 43 51 52 0 184 0 amapchunkpl 152 53431 0 52872 36 11 25 28 0 158 0 amappl16 200 4981 0 4940 52 44 8 16 0 8 4 amappl15 192 21 0 21 1 1 0 1 0 8 0 amappl14 184 200 0 188 1 0 1 1 0 8 0 amappl13 176 6 0 6 2 1 1 1 0 8 1 amappl12 168 2577 0 2546 2 0 2 2 0 8 0 amappl11 160 61 0 47 1 0 1 1 0 8 0 amappl10 152 5 0 4 1 0 1 1 0 8 0 amappl9 144 253 0 253 1 1 0 1 0 8 0 amappl8 136 22 0 19 1 0 1 1 0 8 0 amappl7 128 123 0 110 1 0 1 1 0 8 0 amappl6 120 218 0 215 1 0 1 1 0 8 0 amappl5 112 144 0 133 1 0 1 1 0 8 0 amappl4 104 361 0 340 1 0 1 1 0 8 0 amappl3 96 11095 0 10976 5 1 4 4 0 8 0 amappl2 88 779 0 713 2 0 2 2 0 8 0 amappl1 80 14169 0 13603 15 1 14 14 0 8 0 amappl 88 16186 0 16004 5 0 5 5 0 92 0 dma16384 16384 1 0 1 1 1 0 1 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma2048 2048 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 7 0 7 2 2 0 1 0 8 0 dma128 128 254 0 254 2 2 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 20 0 19 1 0 1 1 0 8 0 aobjpl 72 65 0 6 2 0 2 2 0 8 0 uaddrrnd 24 1860 0 1829 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1860 0 1829 1 0 1 1 0 8 0 vmmpekpl 168 16633 0 16575 4 0 4 4 0 8 0 vmmpepl 168 119231 0 117335 118 27 91 96 0 357 1 vmsppl 456 1859 0 1829 6 1 5 5 0 8 0 rwobjpl 64 38394 0 32169 101 0 101 101 0 8 0 pdppl 4096 3728 0 3658 126 52 74 82 0 8 4 pvpl 32 17124 0 0 139 1 138 138 0 265 0 pmappl 248 1859 0 1829 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 351 0 85 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace sys_semop(ffff8000ffff8cc8,ffff8000314ba130,ffff8000314ba080) at sys_semop+0x3ae sys/kern/sysv_sem.c:620 syscall(ffff8000314ba130) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000314ba130) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7bf94a1ad80, count: -3 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800029aabff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff839ad310) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff839ad310) at __mp_lock+0x192 sys/kern/kern_lock.c:144 __mp_acquire_count(ffffffff839ad310,1) at __mp_acquire_count+0x58 mi_switch() at mi_switch+0x4b7 sys/kern/sched_bsd.c:441 yield() at yield+0x6a sys/kern/sched_bsd.c:320 pool_get(ffffffff838f1c48,9) at pool_get+0x265 sys/kern/subr_pool.c:593 crget() at crget+0x36 sys/kern/kern_prot.c:948 ptm_vn_open(ffff80003696e890) at ptm_vn_open+0x9f sys/kern/tty_pty.c:1024 ptmioctl(5100,40287401,ffff80003696ed00,3,ffff80002a4a3708) at ptmioctl+0x3ab sys/kern/tty_pty.c:1116 VOP_IOCTL(fffffd806dd3f290,40287401,ffff80003696ed00,3,fffffd807f7d2138,ffff80002a4a3708) at VOP_IOCTL+0xac sys/kern/vfs_vops.c:264 vn_ioctl(fffffd805e16d720,40287401,ffff80003696ed00,ffff80002a4a3708) at vn_ioctl+0xf8 sys/kern/vfs_vnops.c:531 sys_ioctl(ffff80002a4a3708,ffff80003696eee0,ffff80003696ee30) at sys_ioctl+0x5c3 syscall(ffff80003696eee0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003696eee0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2083dfdbd80, count: -16