uvm_fault(0xffff800001c8e7c0, 0x8, 0, 1) -> e kernel: page fault trap, code=0 Stopped at knote_processfork+0x287: movq 0x8(%r15),%r14 TID PID UID PRFLAGS PFLAGS CPU COMMAND 75716 68399 0 0 0x4000001 1 syz-executor *111211 68399 0 0 0x4000000 0K syz-executor knote_processfork(ffffffff85d370e0,205f) at knote_processfork+0x287 sys/kern/kern_event.c:2246 fork1(ffffffff85d36d80,f0,ffffffff830a12e0,0,0,ffff80002ff02ea0) at fork1+0x1225 sys/kern/kern_fork.c:511 kthread_create(ffffffff830a12e0,0,0,ffffffff84b844a0) at kthread_create+0xa8 sys/kern/kern_kthread.c:61 nfs_getset_niothreads(1) at nfs_getset_niothreads+0xe7 sys/nfs/nfs_syscalls.c:702 nfs_sysctl(ffff80002ff030a8,1,0,ffff80002ff03080,200000000200,0,ffff80002ff03300) at nfs_sysctl+0x102 sys/nfs/nfs_vfsops.c:894 sys_sysctl(ffff80003bb39780,ffff80002ff03300,ffff80002ff03260) at sys_sysctl+0x54f sys/kern/kern_sysctl.c:309 syscall(ffff80002ff03300) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002ff03300) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:791 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb5d9481e310, count: 7 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(0xffff800001c8e7c0, 0x8, 0, 1) -> e ddb{0}> show kasan kasan: no report recorded this boot ddb{0}> trace knote_processfork(ffffffff85d370e0,205f) at knote_processfork+0x287 sys/kern/kern_event.c:2246 fork1(ffffffff85d36d80,f0,ffffffff830a12e0,0,0,ffff80002ff02ea0) at fork1+0x1225 sys/kern/kern_fork.c:511 kthread_create(ffffffff830a12e0,0,0,ffffffff84b844a0) at kthread_create+0xa8 sys/kern/kern_kthread.c:61 nfs_getset_niothreads(1) at nfs_getset_niothreads+0xe7 sys/nfs/nfs_syscalls.c:702 nfs_sysctl(ffff80002ff030a8,1,0,ffff80002ff03080,200000000200,0,ffff80002ff03300) at nfs_sysctl+0x102 sys/nfs/nfs_vfsops.c:894 sys_sysctl(ffff80003bb39780,ffff80002ff03300,ffff80002ff03260) at sys_sysctl+0x54f sys/kern/kern_sysctl.c:309 syscall(ffff80002ff03300) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002ff03300) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:791 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb5d9481e310, count: -8 ddb{0}> show registers rdi 0x8 rsi 0x1 rbp 0xffff80002ff02d70 rbx 0xffff800001c2da92 rdx 0 rcx 0xffffffff84f15ff0 cpu_info_full_primary+0x1ff0 rax 0x1 r8 0x8 r9 0x1 r10 0 r11 0xffffffff8301f780 filt_proc r12 0xffff80002ff02c20 r13 0xffff80002ff02c20 r14 0xffffffff85d37220 process0+0x140 r15 0 rip 0xffffffff8302db97 knote_processfork+0x287 cs 0x8 rflags 0x10282 __ALIGN_SIZE+0xf282 rsp 0xffff80002ff02bc0 ss 0x10 knote_processfork+0x287: movq 0x8(%r15),%r14 ddb{0}> show proc PROC (syz-executor) tid=111211 pid=68399 tcnt=5 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=82, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003bb38d20,0xffff80003bb38568 process=0xffff800029915350 user=0xffff80002fef8000, vmspace=0xffff800001c8e7c0 estcpu=32, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND 8287 73432 0 0 2 0x14000 0x200 swapper 28044 337750 92534 0 3 0x2 0 clonelk ifconfig 92534 349394 6972 0 3 0x100002 0x88 sigsusp sh 68399 442287 38163 0 2 0 0 syz-executor 68399 182296 38163 0 3 0 0x4000080 kqread syz-executor 68399 477257 38163 0 2 0 0x4000080 syz-executor 68399 75716 38163 0 7 0 0x4000001 syz-executor *68399 111211 38163 0 7 0 0x4000000 syz-executor 6972 99146 56373 0 3 0x2 0x80 wait syz-executor 73282 374972 56373 0 3 0x2 0x80 piperd syz-executor 40880 132719 56373 0 3 0x2 0x80 piperd syz-executor 78279 40837 56373 0 3 0x2 0x80 wait syz-executor 5249 201079 56373 0 3 0x2 0x80 piperd syz-executor 38163 19296 56373 0 3 0x2 0x80 nanoslp syz-executor 56373 12177 1 0 3 0x2 0x80 wait syz-executor 93472 30773 89909 0 3 0x10 0x88 kqread sshd-session 89909 446195 62142 0 3 0x12 0x80 kqread sshd-session 71203 421025 1 0 3 0x100003 0x80 ttyin getty 62142 406536 1 0 3 0 0x88 kqread sshd 63158 125068 32619 74 3 0x1100012 0x80 bpf pflogd 32619 151022 1 0 3 0 0x80 sbwait pflogd 71278 175103 96952 73 3 0x1100010 0x80 kqread syslogd 96952 308134 1 0 3 0x100002 0x80 sbwait syslogd 51514 112502 1 0 3 0x100000 0x80 kqread resolvd 90317 425788 42727 77 3 0x100012 0x80 kqread dhcpleased 39050 46619 42727 77 3 0x100012 0x80 kqread dhcpleased 42727 327298 1 0 3 0 0x80 kqread dhcpleased 24102 508279 0 0 3 0x14000 0x200 bored smr 34972 395066 0 0 2 0x14000 0x200 zerothread 29029 247668 0 0 3 0x14000 0x200 aiodoned aiodoned 59825 5389 0 0 3 0x14000 0x200 syncer update 94485 471047 0 0 3 0x14000 0x200 cleaner cleaner 311 39182 0 0 3 0x14000 0x200 reaper reaper 35074 460630 0 0 3 0x14000 0x200 pgdaemon pagedaemon 82093 124639 0 0 3 0x14000 0x200 bored viomb 62799 182486 0 0 3 0x14000 0x40000200 acpi0 acpi0 83850 204466 0 0 3 0x14000 0x40000200 idle1 72463 202349 0 0 3 0x14000 0x200 bored softnet1 74821 379380 0 0 3 0x14000 0x200 bored softnet0 9148 204819 0 0 3 0x14000 0x200 smrbar systqmp 93857 138025 0 0 3 0x14000 0x200 bored systq 37065 421151 0 0 3 0x14000 0x200 tmoslp softclockmp 79111 140364 0 0 3 0x14000 0x40000200 tmoslp softclock 37867 416614 0 0 3 0x14000 0x40000200 idle0 1 359495 0 0 3 0x2 0x80 wait init 0 0 -1 0 3 0x10000 0x200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &pr->ps_mtx r = 0 (0xffffffff85d371f8) #0 witness_lock+0x632 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x632 sys/kern/subr_witness.c:1160 #1 mtx_enter+0x683 sys/kern/kern_lock.c:487 #2 knote_processfork+0x666 sys/kern/kern_event.c:-1 #3 fork1+0x1225 sys/kern/kern_fork.c:511 #4 kthread_create+0xa8 sys/kern/kern_kthread.c:61 #5 nfs_getset_niothreads+0xe7 sys/nfs/nfs_syscalls.c:702 #6 nfs_sysctl+0x102 sys/nfs/nfs_vfsops.c:894 #7 sys_sysctl+0x54f sys/kern/kern_sysctl.c:309 #8 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0x1089 sys/arch/amd64/amd64/trap.c:791 #9 Xsyscall+0x128 Process 68399 (syz-executor) thread 0xffff80003bb39780 (111211) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff85cda380) #0 witness_lock+0x632 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x632 sys/kern/subr_witness.c:1160 #1 sysctl_vslock+0x72 sys/kern/kern_sysctl.c:197 #2 sys_sysctl+0x460 sys/kern/kern_sysctl.c:304 #3 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] #3 syscall+0x1089 sys/arch/amd64/amd64/trap.c:791 #4 Xsyscall+0x128 exclusive rwlock sysctllk r = 0 (0xffffffff85073238) #0 witness_lock+0x632 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x632 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x53e sys/kern/kern_rwlock.c:320 #2 sysctl_vslock+0x37 sys/kern/kern_sysctl.c:192 #3 sys_sysctl+0x460 sys/kern/kern_sysctl.c:304 #4 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] #4 syscall+0x1089 sys/arch/amd64/amd64/trap.c:791 #5 Xsyscall+0x128 exclusive mutex &pr->ps_mtx r = 0 (0xffffffff85d371f8) #0 witness_lock+0x632 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x632 sys/kern/subr_witness.c:1160 #1 mtx_enter+0x683 sys/kern/kern_lock.c:487 #2 knote_processfork+0x666 sys/kern/kern_event.c:-1 #3 fork1+0x1225 sys/kern/kern_fork.c:511 #4 kthread_create+0xa8 sys/kern/kern_kthread.c:61 #5 nfs_getset_niothreads+0xe7 sys/nfs/nfs_syscalls.c:702 #6 nfs_sysctl+0x102 sys/nfs/nfs_vfsops.c:894 #7 sys_sysctl+0x54f sys/kern/kern_sysctl.c:309 #8 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0x1089 sys/arch/amd64/amd64/trap.c:791 #9 Xsyscall+0x128 Process 9148 (systqmp) thread 0xffff800045ffe530 (204819) shared rwlock systqmp r = 0 (0xffffffff853f4d38) #0 witness_lock+0x632 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x632 sys/kern/subr_witness.c:1160 #1 taskq_thread+0x1ba sys/kern/kern_task.c:442 #2 proc_trampoline+0x10 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11049 12244K 12394K 166960K 12317 0 pcb 17 26K 28K 166960K 236 0 rtable 200 11K 13K 166960K 1144 0 pf 32 22K 28K 166960K 115 0 ifaddr 35 10K 12K 166960K 154 0 ifgroup 47 2K 2K 166960K 161 0 sysctl 2 1K 13K 166960K 6 0 counters 66 41K 42K 166960K 124 0 ioctlops 0 0K 4K 166960K 1535 0 iov 0 0K 12K 166960K 7 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1300 84K 84K 166960K 1714 0 UFS quota 1 36K 36K 166960K 1 0 UFS mount 5 44K 44K 166960K 5 0 shm 2 2K 6K 166960K 5 0 VM map 2 1K 1K 166960K 2 0 sem 8 0K 0K 166960K 8 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 14 49K 93K 166960K 646 0 sigio 0 0K 0K 166960K 3 0 proc 79 145K 210K 166960K 1306 0 subproc 72 9K 9K 166960K 315 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 20K 20K 166960K 1 0 ip_moptions 0 0K 0K 166960K 10 0 in_multi 77 5K 7K 166960K 385 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 10 0 ISOFS mount 1 36K 36K 166960K 1 0 MSDOSFS mount 1 20K 20K 166960K 1 0 ttys 43 303K 303K 166960K 43 0 exec 0 0K 2K 166960K 725 0 fusefs mount 1 36K 36K 166960K 1 0 tdb 3 1K 1K 166960K 3 0 VM swap 14 124K 124K 166960K 15 0 UVM amap 198 232K 268K 166960K 6346 0 UVM aobj 6 4K 8K 166960K 9 0 pinsyscall 1062 1763K 1789K 166960K 2485 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 1 0 NDP 12 0K 2K 166960K 107 0 temp 35 9170K 9197K 166960K 7539 0 kqueue 19 43K 53K 166960K 61 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 28 0 0 1 0 1 1 0 8 0 rtpcb 120 85 0 82 1 0 1 1 0 8 0 rtentry 176 400 0 311 6 1 5 6 0 8 0 unpcb 144 256 0 236 7 3 4 4 0 8 3 syncache 336 4 0 4 2 2 0 1 0 8 0 tcpcb 736 17 0 13 1 0 1 1 0 8 0 arp 136 71 0 57 1 0 1 1 0 8 0 inpcb 328 623 0 615 7 0 7 7 0 8 6 nd6 152 104 0 85 1 0 1 1 0 8 0 kcovpl 48 35 0 27 1 0 1 1 0 8 0 ppxss 1192 1 0 1 1 0 1 1 0 8 1 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 3 0 1 1 0 1 1 0 8 0 pfanchor 1288 3 0 0 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 40 0 1 1 0 1 1 0 8 0 pfstkey 128 40 0 1 2 0 2 2 0 8 0 pfstate 448 40 0 1 5 0 5 5 0 8 0 pfrule 1360 23 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1607 0 1191 36 8 28 29 0 8 2 art_table 40 1608 0 1191 5 0 5 5 0 8 0 art_node 32 400 0 309 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 1 1 0 1 1 0 8 1 semapl 72 6 0 0 1 0 1 1 0 8 0 shmpl 112 6 0 3 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1822 0 295 96 0 96 96 0 8 0 ffsino 296 1822 0 295 118 0 118 118 0 8 0 nchpl 144 2177 0 363 68 0 68 68 0 8 0 vnodes 216 2216 0 0 124 0 124 124 0 8 0 namei 1024 10722 0 10722 2 1 1 2 0 8 1 percpumem 16 78 0 29 1 0 1 1 0 8 0 pfiaddrpl 120 1 0 0 1 0 1 1 0 8 0 kstatmem 264 81 0 58 2 0 2 2 0 8 0 scxspl 216 7953 0 7953 11 3 8 8 1 8 8 plimitpl 152 65 0 49 1 0 1 1 0 8 0 sigapl 424 911 0 867 7 1 6 7 0 8 0 knotepl 120 133 0 0 5 0 5 5 0 8 0 kqueuepl 224 84 0 72 1 0 1 1 0 8 0 pipepl 344 223 0 196 4 0 4 4 0 8 0 fdescpl 528 894 0 867 3 0 3 3 0 8 0 filepl 160 3470 0 3254 13 0 13 13 0 8 0 lockfpl 104 60 0 58 1 0 1 1 0 8 0 lockfspl 48 28 0 26 1 0 1 1 0 8 0 sessionpl 144 61 0 52 1 0 1 1 0 8 0 pgrppl 48 98 0 81 1 0 1 1 0 8 0 ucredpl 104 190 0 177 1 0 1 1 0 8 0 zombiepl 144 870 0 867 1 0 1 1 0 8 0 processpl 1232 911 0 867 5 1 4 5 0 8 0 procpl 664 1221 0 1173 6 0 6 6 0 8 1 sosppl 176 1 0 1 1 1 0 1 0 8 0 sockpl 752 967 0 936 10 0 10 10 0 8 6 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl9k128 9344 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 120 0 0 15 0 15 15 0 8 0 mcl2k 2048 24 0 0 3 0 3 3 0 8 0 mextrefs 64 25 0 0 1 0 1 1 0 8 0 mtagpl 96 5 0 0 1 0 1 1 0 8 0 mbufpl 256 253 0 0 16 0 16 16 0 8 0 bufpl 272 2522 0 106 162 0 162 162 0 8 0 anonpl 32 3854 0 0 32 0 32 32 0 222 0 amapchunkpl 152 17212 0 16850 22 1 21 21 0 158 3 amappl16 200 2060 0 2042 5 3 2 5 0 8 0 amappl15 192 7 0 7 1 1 0 1 0 8 0 amappl14 184 753 0 752 1 0 1 1 0 8 0 amappl13 176 184 0 172 1 0 1 1 0 8 0 amappl12 168 1247 0 1222 2 0 2 2 0 8 0 amappl11 160 5 0 5 3 2 1 1 0 8 1 amappl10 152 63 0 49 1 0 1 1 0 8 0 amappl9 144 276 0 276 1 1 0 1 0 8 0 amappl8 136 203 0 200 1 0 1 1 0 8 0 amappl7 128 201 0 188 1 0 1 1 0 8 0 amappl6 120 420 0 418 1 0 1 1 0 8 0 amappl5 112 122 0 110 1 0 1 1 0 8 0 amappl4 104 439 0 419 1 0 1 1 0 8 0 amappl3 96 3223 0 3150 3 0 3 3 0 8 0 amappl2 88 921 0 846 2 0 2 2 0 8 0 amappl1 80 14464 0 13868 15 1 14 15 0 8 0 amappl 88 5160 0 5033 4 0 4 4 0 92 0 uvmvnodes 80 103 0 0 3 0 3 3 0 8 0 dma4096 4096 3 0 3 2 1 1 1 0 8 1 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 8 0 3 1 0 1 1 0 8 0 uaddrrnd 24 894 0 867 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 894 0 867 1 0 1 1 0 8 0 vmmpekpl 168 9278 0 9240 3 0 3 3 0 8 0 vmmpepl 168 66819 0 65144 88 2 86 88 0 357 3 vmsppl 488 893 0 867 5 0 5 5 0 8 0 rwobjpl 80 21924 0 20921 24 1 23 24 0 8 0 pdppl 4096 1796 0 1734 140 72 68 86 0 8 6 pvpl 32 10326 0 0 85 1 84 84 0 265 0 pmappl 256 893 0 867 3 0 3 3 0 8 0 extentpl 40 46 0 28 1 0 1 1 0 8 0 phpool 120 494 0 86 13 0 13 13 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace knote_processfork(ffffffff85d370e0,205f) at knote_processfork+0x287 sys/kern/kern_event.c:2246 fork1(ffffffff85d36d80,f0,ffffffff830a12e0,0,0,ffff80002ff02ea0) at fork1+0x1225 sys/kern/kern_fork.c:511 kthread_create(ffffffff830a12e0,0,0,ffffffff84b844a0) at kthread_create+0xa8 sys/kern/kern_kthread.c:61 nfs_getset_niothreads(1) at nfs_getset_niothreads+0xe7 sys/nfs/nfs_syscalls.c:702 nfs_sysctl(ffff80002ff030a8,1,0,ffff80002ff03080,200000000200,0,ffff80002ff03300) at nfs_sysctl+0x102 sys/nfs/nfs_vfsops.c:894 sys_sysctl(ffff80003bb39780,ffff80002ff03300,ffff80002ff03260) at sys_sysctl+0x54f sys/kern/kern_sysctl.c:309 syscall(ffff80002ff03300) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002ff03300) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:791 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb5d9481e310, count: -8 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x19: leave x86_ipi_db(ffff800028fe3ff0) at x86_ipi_db+0x19 sys/arch/amd64/amd64/db_interface.c:412 x86_ipi_handler() at x86_ipi_handler+0x112 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff85cd9b80) at __mp_lock+0x272 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff85cd9b80) at __mp_lock+0x272 sys/kern/kern_lock.c:173 ktrsysret(ffff80003bb38d20,48,e,ffff800029aa43c0) at ktrsysret+0x14d ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline] ktrsysret(ffff80003bb38d20,48,e,ffff800029aa43c0) at ktrsysret+0x14d sys/kern/kern_ktrace.c:209 syscall(ffff800029aa4460) at syscall+0x473 mi_syscall_return sys/sys/syscall_mi.h:204 [inline] syscall(ffff800029aa4460) at syscall+0x473 sys/arch/amd64/amd64/trap.c:812 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb5dabd8f5e0, count: 8 ddb{1}> trace x86_ipi_db(ffff800028fe3ff0) at x86_ipi_db+0x19 sys/arch/amd64/amd64/db_interface.c:412 x86_ipi_handler() at x86_ipi_handler+0x112 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff85cd9b80) at __mp_lock+0x272 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff85cd9b80) at __mp_lock+0x272 sys/kern/kern_lock.c:173 ktrsysret(ffff80003bb38d20,48,e,ffff800029aa43c0) at ktrsysret+0x14d ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline] ktrsysret(ffff80003bb38d20,48,e,ffff800029aa43c0) at ktrsysret+0x14d sys/kern/kern_ktrace.c:209 syscall(ffff800029aa4460) at syscall+0x473 mi_syscall_return sys/sys/syscall_mi.h:204 [inline] syscall(ffff800029aa4460) at syscall+0x473 sys/arch/amd64/amd64/trap.c:812 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb5dabd8f5e0, count: -7