uvm_fault(0xffffffff83919128, 0xffff80003c45a310, 0, 1) -> e kernel: page fault trap, code=0 Stopped at witness_checkorder+0xb5: movl 0x20(%r14),%r15d TID PID UID PRFLAGS PFLAGS CPU COMMAND 357240 36031 0 0 0x1 1 sshd witness_checkorder(ffff80003c45a2f0,9,0) at witness_checkorder+0xb5 sys/kern/subr_witness.c:779 mtx_enter(ffff80003c45a2e0) at mtx_enter+0x4a sys/kern/kern_lock.c:260 filt_procdetach(fffffd80604cd360) at filt_procdetach+0x4d sys/kern/kern_event.c:432 knote_remove(ffff800034bee028,fffffd806eea1380,fffffd806eea1420,a,1) at knote_remove+0x2db sys/kern/kern_event.c:-1 kqueue_purge(ffff800034bee028,fffffd806eea1380) at kqueue_purge+0x137 sys/kern/kern_event.c:1890 kqueue_close(fffffd806951c7c8,ffff800034bee028) at kqueue_close+0x48 sys/kern/kern_event.c:1934 fdrop(fffffd806951c7c8,ffff800034bee028) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806951c7c8,ffff800034bee028) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff800034bee028) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff800034bee028,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff800034bee028,ffff800035801af0,ffff800035801a40) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800035801af0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800035801af0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x77a1c1375670, count: 2 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: uvm_fault(0xffffffff83919128, 0xffff80003c45a310, 0, 1) -> e ddb{0}> trace witness_checkorder(ffff80003c45a2f0,9,0) at witness_checkorder+0xb5 sys/kern/subr_witness.c:779 mtx_enter(ffff80003c45a2e0) at mtx_enter+0x4a sys/kern/kern_lock.c:260 filt_procdetach(fffffd80604cd360) at filt_procdetach+0x4d sys/kern/kern_event.c:432 knote_remove(ffff800034bee028,fffffd806eea1380,fffffd806eea1420,a,1) at knote_remove+0x2db sys/kern/kern_event.c:-1 kqueue_purge(ffff800034bee028,fffffd806eea1380) at kqueue_purge+0x137 sys/kern/kern_event.c:1890 kqueue_close(fffffd806951c7c8,ffff800034bee028) at kqueue_close+0x48 sys/kern/kern_event.c:1934 fdrop(fffffd806951c7c8,ffff800034bee028) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806951c7c8,ffff800034bee028) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff800034bee028) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff800034bee028,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff800034bee028,ffff800035801af0,ffff800035801a40) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800035801af0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800035801af0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x77a1c1375670, count: -13 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff8000358016a0 rbx 0 rdx 0 rcx 0xffff800034bee028 rax 0xffffffff8382affe cpu_info_full_primary+0x1ffe r8 0x1 r9 0 r10 0x97657076706e6e9d r11 0x6ccd46247749d9c5 r12 0xffffffff836643fe timer_filtops+0x16 r13 0x9 r14 0xffff80003c45a2f0 r15 0 rip 0xffffffff81c5bb65 witness_checkorder+0xb5 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800035801600 ss 0x10 witness_checkorder+0xb5: movl 0x20(%r14),%r15d ddb{0}> show proc PROC (syz-executor) tid=108316 pid=38830 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=79, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff800034bee028 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff8000358094e0,0xffff800034bef260 process=0xffff8000358061d0 user=0xffff8000357fc000, vmspace=0xfffffd806c247d70 estcpu=29, cpticks=10, pctcpu=0.9, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 21360 220279 36031 0 2 0x2 sshd-session 35964 376948 14381 0 3 0x80 nanoslp syz-executor 35964 501988 14381 0 3 0x4000080 kqsel syz-executor 35964 454789 14381 0 3 0x4000080 fsleep syz-executor 79700 123284 15218 0 3 0x80 nanoslp syz-executor 79700 238139 15218 0 3 0x4000080 kqread syz-executor 79700 515967 15218 0 3 0x4000080 fsleep syz-executor 66176 308973 55100 0 3 0x80 nanoslp syz-executor 66176 10091 55100 0 3 0x4000080 kqpoll syz-executor 66176 130986 55100 0 3 0x4000080 fsleep syz-executor 59560 377618 0 0 3 0x14200 bored sosplice 77575 518917 0 0 3 0x14200 acct acct 26647 450147 53206 0 2 0xc82 syz-executor 81850 186187 53206 0 3 0x82 nanoslp syz-executor 14381 103955 53206 0 2 0xc82 syz-executor 10813 250617 53206 0 3 0x82 nanoslp syz-executor 91328 30050 53206 0 2 0x2 syz-executor 55100 239024 53206 0 3 0x82 nanoslp syz-executor 15218 444733 53206 0 3 0x82 nanoslp syz-executor 75546 493894 53206 0 3 0x82 wait syz-executor 53206 93900 65692 0 3 0x82 kqread syz-executor 65692 426760 22577 0 3 0x10008a sigsusp ksh 22577 471199 30985 0 3 0x98 kqread sshd-session 30985 509197 36031 0 3 0x92 kqread sshd-session 77621 441669 1 0 3 0x100083 ttyin getty 36031 357240 1 0 7 0x1 sshd 11029 229252 60986 74 3 0x1100092 bpf pflogd 60986 328411 1 0 3 0x80 sbwait pflogd 59972 59030 39188 73 3 0x1100090 kqread syslogd 39188 422986 1 0 3 0x100082 sbwait syslogd 6453 255994 1 0 3 0x100080 kqread resolvd 93926 199127 371 77 3 0x100092 kqread dhcpleased 99959 231851 371 77 3 0x100092 kqread dhcpleased 371 173520 1 0 3 0x80 kqread dhcpleased 7032 484771 0 0 3 0x14200 bored smr 73429 482874 0 0 2 0x14200 zerothread 89978 83650 0 0 3 0x14200 aiodoned aiodoned 54549 218252 0 0 3 0x14200 syncer update 31951 517504 0 0 3 0x14200 cleaner cleaner 99510 142810 0 0 3 0x14200 reaper reaper 53279 126840 0 0 3 0x14200 pgdaemon pagedaemon 38445 88859 0 0 3 0x14200 bored viomb 52532 18533 0 0 3 0x40014200 acpi0 acpi0 21243 514338 0 0 3 0x40014200 idle1 33796 504363 0 0 3 0x14200 bored softnet1 31441 449105 0 0 3 0x14200 bored softnet0 75992 484572 0 0 3 0x14200 bored systqmp 67379 28562 0 0 3 0x14200 bored systq 20343 485395 0 0 3 0x14200 tmoslp softclockmp 66490 394564 0 0 3 0x40014200 tmoslp softclock 46297 78561 0 0 3 0x40014200 idle0 1 440744 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 91328 (syz-executor) thread 0xffff8000ffffd230 (30050) exclusive rrwlock inode r = 0 (0xfffffd806e99db08) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2a2 sys/kern/vfs_subr.c:687 #6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1203 #8 ufs_lookup+0x1a36 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x93a sys/kern/vfs_lookup.c:566 #11 namei+0x7ca sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1868 #13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd807bdcf7c0) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 #6 namei+0x7ca sys/kern/vfs_lookup.c:250 #7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1868 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10201 11040K 11459K 166960K 11690 0 pcb 18 13K 14K 166960K 145 0 rtable 253 11K 12K 166960K 443 0 pf 33 17K 19K 166960K 91 0 ifaddr 40 7K 8K 166960K 67 0 ifgroup 51 2K 2K 166960K 104 0 sysctl 3 1K 9K 166960K 11 0 counters 66 36K 37K 166960K 124 0 ioctlops 0 0K 4K 166960K 1542 0 iov 0 0K 24K 166960K 16 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1374 86K 87K 166960K 1624 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 6 0 VM map 2 1K 1K 166960K 2 0 sem 10 0K 0K 166960K 12 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 240K 166960K 460 0 sigio 0 0K 0K 166960K 7 0 proc 72 115K 147K 166960K 580 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 39 0 in_multi 88 6K 7K 166960K 110 0 ether_multi 1 0K 0K 166960K 3 0 mrt 1 0K 0K 166960K 3 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 103 466K 466K 166960K 103 0 exec 0 0K 1K 166960K 418 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 259 159K 172K 166960K 5969 0 UVM aobj 6 2K 2K 166960K 7 0 pinsyscall 43 86K 100K 166960K 1575 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 19 0 NDP 11 0K 2K 166960K 45 0 temp 41 8643K 8715K 166960K 20876 0 kqueue 16 24K 30K 166960K 97 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 26 0 0 1 0 1 1 0 8 0 rtpcb 120 55 0 51 1 0 1 1 0 8 0 rtentry 176 126 0 21 6 0 6 6 0 8 0 unpcb 144 201 0 182 2 1 1 2 0 8 0 syncache 336 4 0 4 2 1 1 1 0 8 1 tcpcb 736 113 0 107 2 1 1 2 0 8 0 arp 136 23 0 4 1 0 1 1 0 8 0 inpcb 328 464 0 453 10 8 2 10 0 8 0 nd6 152 24 0 3 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 23 0 23 1 1 0 1 0 8 0 pppxif 1504 2 0 2 2 2 0 1 0 8 0 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 3 0 1 1 0 1 1 0 482 0 pffrnode 88 2 0 1 1 0 1 1 0 8 0 pffrent 40 8 0 4 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 pfstitem 24 41 0 2 1 0 1 1 0 8 0 pfstkey 128 42 0 3 2 0 2 2 0 8 0 pfstate 384 42 0 3 5 0 5 5 0 8 0 pfrule 1344 22 0 17 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 476 0 65 29 1 28 29 0 8 0 art_table 40 478 0 65 5 0 5 5 0 8 0 art_node 32 125 0 32 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 0 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 10 0 2 1 0 1 1 0 8 0 shmpl 112 4 0 1 1 0 1 1 0 8 0 dirhash 1024 22 0 5 3 0 3 3 0 8 0 dino2pl 256 2190 0 670 96 0 96 96 0 8 0 ffsino 296 2190 0 670 118 0 118 118 0 8 0 nchpl 144 2826 0 1129 64 0 64 64 0 8 0 rtmask 32 5 0 5 1 1 0 1 0 8 0 vnodes 216 2410 0 0 134 0 134 134 0 8 0 namei 1024 8977 0 8977 3 2 1 2 0 8 1 percpumem 16 77 0 29 1 0 1 1 0 8 0 kstatmem 264 60 0 36 3 1 2 3 0 8 0 scxspl 216 11752 0 11752 10 9 1 8 1 8 1 plimitpl 152 80 0 57 1 0 1 1 0 8 0 sigapl 424 778 0 728 8 2 6 8 0 8 0 knotepl 120 550 0 0 17 0 17 17 0 8 0 kqueuepl 224 165 0 151 2 1 1 2 0 8 0 pipepl 344 143 0 116 3 0 3 3 0 8 0 fdescpl 528 740 0 708 3 0 3 3 0 8 0 filepl 160 3824 0 3593 15 3 12 15 0 8 0 lockfpl 104 84 0 82 1 0 1 1 0 8 0 lockfspl 48 36 0 34 1 0 1 1 0 8 0 sessionpl 144 23 0 13 1 0 1 1 0 8 0 pgrppl 48 36 0 18 1 0 1 1 0 8 0 ucredpl 104 462 0 448 1 0 1 1 0 8 0 zombiepl 144 732 0 728 1 0 1 1 0 8 0 processpl 1232 778 0 728 6 1 5 6 0 8 0 procpl 664 1378 0 1322 7 1 6 7 0 8 0 sosppl 168 1 0 1 1 1 0 1 0 8 0 sockpl 752 736 0 702 14 9 5 14 0 8 0 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 118 0 0 15 0 15 15 0 8 0 mcl2k 2048 29 0 0 4 0 4 4 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 181 0 0 12 0 12 12 0 8 0 bufpl 280 4311 0 130 299 0 299 299 0 8 0 anonpl 32 8397 0 0 68 0 68 68 0 246 0 amapchunkpl 152 18417 0 17882 26 4 22 26 0 158 0 amappl16 200 2894 0 2812 21 8 13 18 0 8 0 amappl15 192 22 0 22 2 2 0 1 0 8 0 amappl14 184 2 0 2 1 1 0 1 0 8 0 amappl13 176 457 0 456 1 0 1 1 0 8 0 amappl12 168 1121 0 1079 3 0 3 3 0 8 0 amappl11 160 9 0 8 1 0 1 1 0 8 0 amappl10 152 50 0 36 1 0 1 1 0 8 0 amappl9 144 250 0 250 1 1 0 1 0 8 0 amappl8 136 32 0 29 1 0 1 1 0 8 0 amappl7 128 95 0 94 1 0 1 1 0 8 0 amappl6 120 291 0 278 1 0 1 1 0 8 0 amappl5 112 73 0 62 1 0 1 1 0 8 0 amappl4 104 425 0 395 1 0 1 1 0 8 0 amappl3 96 3105 0 3001 4 1 3 3 0 8 0 amappl2 88 858 0 781 2 0 2 2 0 8 0 amappl1 80 10288 0 9692 14 1 13 14 0 8 0 amappl 88 5183 0 5005 5 0 5 5 0 92 0 uvmvnodes 80 2410 0 0 50 0 50 50 0 8 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 20 0 19 1 0 1 1 0 8 0 aobjpl 72 6 0 1 1 0 1 1 0 8 0 uaddrrnd 24 740 0 708 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 740 0 708 1 0 1 1 0 8 0 vmmpekpl 168 7725 0 7688 2 0 2 2 0 8 0 vmmpepl 168 54354 0 52337 100 0 100 100 0 357 0 vmsppl 488 739 0 708 5 1 4 5 0 8 0 rwobjpl 80 19989 0 16568 76 1 75 75 0 8 0 pdppl 4096 1487 0 1416 95 22 73 79 0 8 2 pvpl 32 17841 0 0 145 1 144 144 0 265 0 pmappl 256 739 0 708 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 273 0 29 7 0 7 7 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace witness_checkorder(ffff80003c45a2f0,9,0) at witness_checkorder+0xb5 sys/kern/subr_witness.c:779 mtx_enter(ffff80003c45a2e0) at mtx_enter+0x4a sys/kern/kern_lock.c:260 filt_procdetach(fffffd80604cd360) at filt_procdetach+0x4d sys/kern/kern_event.c:432 knote_remove(ffff800034bee028,fffffd806eea1380,fffffd806eea1420,a,1) at knote_remove+0x2db sys/kern/kern_event.c:-1 kqueue_purge(ffff800034bee028,fffffd806eea1380) at kqueue_purge+0x137 sys/kern/kern_event.c:1890 kqueue_close(fffffd806951c7c8,ffff800034bee028) at kqueue_close+0x48 sys/kern/kern_event.c:1934 fdrop(fffffd806951c7c8,ffff800034bee028) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806951c7c8,ffff800034bee028) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff800034bee028) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff800034bee028,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff800034bee028,ffff800035801af0,ffff800035801a40) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800035801af0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800035801af0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x77a1c1375670, count: -13 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299edff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 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(ffffffff83922d30) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83922d30) at __mp_lock+0x192 sys/kern/kern_lock.c:165 ktrsyscall(ffff80002a2734d0,31,30,ffff80002a2d2db0) at ktrsyscall+0x2c7 ktrwrite sys/kern/kern_ktrace.c:-1 [inline] ktrsyscall(ffff80002a2734d0,31,30,ffff80002a2d2db0) at ktrsyscall+0x2c7 sys/kern/kern_ktrace.c:183 syscall(ffff80002a2d2db0) at syscall+0x304 mi_syscall sys/sys/syscall_mi.h:154 [inline] syscall(ffff80002a2d2db0) at syscall+0x304 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x755c0da10240, count: 8 ddb{1}> trace x86_ipi_db(ffff8000299edff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 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(ffffffff83922d30) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83922d30) at __mp_lock+0x192 sys/kern/kern_lock.c:165 ktrsyscall(ffff80002a2734d0,31,30,ffff80002a2d2db0) at ktrsyscall+0x2c7 ktrwrite sys/kern/kern_ktrace.c:-1 [inline] ktrsyscall(ffff80002a2734d0,31,30,ffff80002a2d2db0) at ktrsyscall+0x2c7 sys/kern/kern_ktrace.c:183 syscall(ffff80002a2d2db0) at syscall+0x304 mi_syscall sys/sys/syscall_mi.h:154 [inline] syscall(ffff80002a2d2db0) at syscall+0x304 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x755c0da10240, count: -7