kernel: protection fault trap, code=0 Stopped at ktrops+0x4f: movq 0x8(%r14),%r14 ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic the kernel did not panic ddb{0}> trace ktrops(ffff80002a1a8800,deafbeaddeafbead,0,80000002,fffffd8076d601c8,fffffd807f7d7888) at ktrops+0x4f ktrcanset sys/kern/kern_ktrace.c:718 [inline] ktrops(ffff80002a1a8800,deafbeaddeafbead,0,80000002,fffffd8076d601c8,fffffd807f7d7888) at ktrops+0x4f sys/kern/kern_ktrace.c:561 doktrace(fffffd8076d601c8,4,2,0,ffff80002a1a8800) at doktrace+0x514 ktrsetchildren sys/kern/kern_ktrace.c:586 [inline] doktrace(fffffd8076d601c8,4,2,0,ffff80002a1a8800) at doktrace+0x514 sys/kern/kern_ktrace.c:508 sys_ktrace(ffff80002a1a8800,ffff800037378090,ffff800037377ff0) at sys_ktrace+0xd6 sys/kern/kern_ktrace.c:549 syscall(ffff800037378090) at syscall+0x53b mi_syscall sys/sys/syscall_mi.h:183 [inline] syscall(ffff800037378090) at syscall+0x53b sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7453725d310, count: -5 ddb{0}> show registers rdi 0xffff800035973000 rsi 0x1f2d __ALIGN_SIZE+0xf2d rbp 0xffff800037377db0 rbx 0xfffffd807f7d7888 rdx 0xffff800035973000 rcx 0x1f2c __ALIGN_SIZE+0xf2c rax 0xffffffff81d86563 ktrops+0x43 r8 0xfffffd8076d601c8 r9 0xfffffd807f7d7888 r10 0x8fd88f7a6b1cfae2 r11 0xc2ee3a29c79e9936 r12 0xffff80002a1a8800 r13 0xdeafbeaddeafbead r14 0xdeafbeaddeafbead r15 0x80000002 __kernel_virt_to_phys+0x2 rip 0xffffffff81d8656f ktrops+0x4f cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800037377d30 ss 0 ktrops+0x4f: movq 0x8(%r14),%r14 ddb{0}> show proc PROC (syz-executor.7) tid=507265 pid=33502 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=17, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a1a7018,0xffff80002a1a8d60 process=0xffff8000fffed650 user=0xffff800037373000, vmspace=0xfffffd80695f0c60 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 46928 290295 40466 0 2 0 syz-executor.1 51994 93348 72809 0 2 0 syz-executor.4 33502 465315 94718 0 2 0 syz-executor.7 *33502 507265 94718 0 7 0x4000000 syz-executor.7 47147 77675 0 0 3 0x14280 nfsidl nfsio 16414 124978 0 0 3 0x14280 nfsidl nfsio 17095 274461 0 0 3 0x14280 nfsidl nfsio 13272 53364 0 0 3 0x14280 nfsidl nfsio 25725 224771 0 0 3 0x14280 nfsidl nfsio 71555 331584 0 0 3 0x14280 nfsidl nfsio 10838 303014 0 0 3 0x14280 nfsidl nfsio 82134 170001 0 0 3 0x14280 nfsidl nfsio 20416 426202 0 0 3 0x14280 nfsidl nfsio 20314 480418 0 0 3 0x14280 nfsidl nfsio 62582 22100 0 0 3 0x14280 nfsidl nfsio 67155 36205 0 0 3 0x14280 nfsidl nfsio 3352 16130 0 0 3 0x14280 nfsidl nfsio 91027 516881 0 0 3 0x14280 nfsidl nfsio 4969 219724 0 0 3 0x14280 nfsidl nfsio 91886 21117 0 0 3 0x14280 nfsidl nfsio 53063 281991 0 0 3 0x14280 nfsidl nfsio 33479 356292 0 0 3 0x14280 nfsidl nfsio 6965 206796 0 0 3 0x14280 nfsidl nfsio 11496 145315 0 0 3 0x14280 nfsidl nfsio 94718 310569 60921 0 3 0x82 nanoslp syz-executor.7 49900 223353 60921 0 2 0x2 syz-executor.6 83829 478480 60921 0 3 0x82 nanoslp syz-executor.5 72809 301975 60921 0 3 0x82 nanoslp syz-executor.4 11290 381692 60921 0 2 0x2 syz-executor.3 4003 164698 60921 0 2 0x2 syz-executor.2 40466 416467 60921 0 3 0x82 nanoslp syz-executor.1 76031 10406 60921 0 2 0x2 syz-executor.0 60921 430788 17984 0 3 0x1a000082 wait syz-fuzzer 60921 438932 17984 0 3 0x1e000082 nanoslp syz-fuzzer 60921 403853 17984 0 3 0x1e000082 wait syz-fuzzer 60921 262817 17984 0 3 0x1e000082 wait syz-fuzzer 60921 269334 17984 0 3 0x1e000082 kqread syz-fuzzer 60921 518026 17984 0 3 0x1e000082 thrsleep syz-fuzzer 60921 454975 17984 0 3 0x1e000082 wait syz-fuzzer 60921 55756 17984 0 3 0x1e000082 wait syz-fuzzer 60921 27346 17984 0 3 0x1e000082 wait syz-fuzzer 60921 473266 17984 0 3 0x1e000082 thrsleep syz-fuzzer 60921 91773 17984 0 3 0x1e000082 thrsleep syz-fuzzer 60921 418580 17984 0 3 0x1e000082 wait syz-fuzzer 60921 24351 17984 0 3 0x1e000082 wait syz-fuzzer 60921 517392 17984 0 3 0x1e000082 thrsleep syz-fuzzer 60921 2361 17984 0 2 0x1e000002 syz-fuzzer 60921 360299 17984 0 3 0x1e000082 thrsleep syz-fuzzer 17984 296103 43264 0 3 0x810008a sigsusp ksh 43264 440676 45005 0 7 0x18000012 sshd 34631 59254 1 0 3 0x18100083 ttyin getty 45005 417533 1 0 3 0x18000088 kqread sshd 21981 384234 38560 74 3 0x19100092 bpf pflogd 38560 412911 1 0 3 0x18000080 netio pflogd 95490 39296 56516 73 3 0x19100090 kqread syslogd 56516 213655 1 0 3 0x18100082 netio syslogd 73518 1507 1 0 3 0x18100080 kqread resolvd 51963 1876 53020 77 3 0x18100092 kqread dhcpleased 37559 373640 53020 77 3 0x18100092 kqread dhcpleased 53020 486153 1 0 3 0x18000080 kqread dhcpleased 6769 407636 0 0 3 0x14200 bored smr 89128 106305 0 0 2 0x14200 zerothread 21235 247257 0 0 3 0x14200 aiodoned aiodoned 50555 81286 0 0 3 0x14200 syncer update 56530 388480 0 0 3 0x14200 cleaner cleaner 87783 188432 0 0 3 0x14200 reaper reaper 12507 186082 0 0 3 0x14200 pgdaemon pagedaemon 90225 212695 0 0 3 0x14200 bored viomb 41011 139932 0 0 3 0x40014200 acpi0 acpi0 39426 138698 0 0 3 0x40014200 idle1 1575 23977 0 0 3 0x14200 bored softnet3 70275 233025 0 0 3 0x14200 bored softnet2 36216 216276 0 0 3 0x14200 bored softnet1 79389 198424 0 0 3 0x14200 bored softnet0 24120 125911 0 0 3 0x14200 bored systqmp 14386 178572 0 0 3 0x14200 bored systq 11457 8930 0 0 3 0x14200 tmoslp softclockmp 64161 226876 0 0 3 0x40014200 tmoslp softclock 38019 298062 0 0 3 0x40014200 idle0 1 367363 0 0 3 0x8000082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 33502 (syz-executor.7) thread 0xffff80002a1a8800 (507265) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82d60cf8) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1187 #1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 #2 mi_switch+0x494 sys/kern/sched_bsd.c:470 #3 sleep_finish+0x19d sys/kern/kern_synch.c:414 #4 getblk+0x137 sys/kern/vfs_bio.c:1025 #5 bread+0x3e bio_doread sys/kern/vfs_bio.c:430 [inline] #5 bread+0x3e sys/kern/vfs_bio.c:475 #6 ffs_update+0x14c sys/ufs/ffs/ffs_inode.c:91 #7 ufs_inactive+0x213 sys/ufs/ufs/ufs_inode.c:95 #8 VOP_INACTIVE+0xc5 sys/kern/vfs_vops.c:489 #9 vrele+0xd2 sys/kern/vfs_subr.c:827 #10 ktrsettrace+0xb6 sys/kern/kern_ktrace.c:122 #11 ktrops+0x1ae sys/kern/kern_ktrace.c:564 #12 doktrace+0x514 ktrsetchildren sys/kern/kern_ktrace.c:586 [inline] #12 doktrace+0x514 sys/kern/kern_ktrace.c:508 #13 sys_ktrace+0xd6 sys/kern/kern_ktrace.c:549 #14 syscall+0x53b mi_syscall sys/sys/syscall_mi.h:183 [inline] #14 syscall+0x53b sys/arch/amd64/amd64/trap.c:577 #15 Xsyscall+0x128 Process 11290 (syz-executor.3) thread 0xffff80002a20a2b8 (381692) exclusive rrwlock inode r = 0 (0xfffffd807c0b3b40) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1187 #1 rw_enter+0x32a sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8e sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 ufs_ihashins+0x46 #5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1230 #6 ffs_inode_alloc+0x1e4 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0xe6 sys/ufs/ufs/ufs_vnops.c:1117 #8 VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 #9 domkdirat+0x125 sys/kern/vfs_syscalls.c:3077 #10 syscall+0x53b mi_syscall sys/sys/syscall_mi.h:183 [inline] #10 syscall+0x53b sys/arch/amd64/amd64/trap.c:577 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd80677dbb40) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1187 #1 rw_enter+0x32a sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8e sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x85 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0xd3 sys/kern/vfs_lookup.c:418 #6 namei+0x56a sys/kern/vfs_lookup.c:250 #7 domkdirat+0x79 sys/kern/vfs_syscalls.c:3062 #8 syscall+0x53b mi_syscall sys/sys/syscall_mi.h:183 [inline] #8 syscall+0x53b sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 Process 4003 (syz-executor.2) thread 0xffff80002a209818 (164698) exclusive rrwlock inode r = 0 (0xfffffd806b8ac818) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1187 #1 rw_enter+0x32a sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8e sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 ufs_ihashins+0x46 #5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1230 #6 ffs_inode_alloc+0x1e4 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0xe6 sys/ufs/ufs/ufs_vnops.c:1117 #8 VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 #9 domkdirat+0x125 sys/kern/vfs_syscalls.c:3077 #10 syscall+0x53b mi_syscall sys/sys/syscall_mi.h:183 [inline] #10 syscall+0x53b sys/arch/amd64/amd64/trap.c:577 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806d6d32c8) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1187 #1 rw_enter+0x32a sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8e sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x85 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0xd3 sys/kern/vfs_lookup.c:418 #6 namei+0x56a sys/kern/vfs_lookup.c:250 #7 domkdirat+0x79 sys/kern/vfs_syscalls.c:3062 #8 syscall+0x53b mi_syscall sys/sys/syscall_mi.h:183 [inline] #8 syscall+0x53b sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10183 6502K 6570K 166960K 30273 0 pcb 15 16K 18K 166960K 1325 0 rtable 236 6K 6K 166960K 358 0 pf 32 9K 10K 166960K 43 0 ifaddr 45 15K 15K 166960K 47 0 ifgroup 55 2K 2K 166960K 55 0 sysctl 3 0K 0K 166960K 3 0 counters 64 36K 36K 166960K 64 0 ioctlops 0 0K 4K 166960K 4080 0 iov 0 0K 1K 166960K 1917 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1560 98K 98K 166960K 13561 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 798 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 1810 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 13 45K 85K 166960K 61714 0 sigio 1 0K 0K 166960K 3496 0 proc 68 91K 115K 166960K 527 0 subproc 104 6K 6K 166960K 104 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 in_multi 99 7K 7K 166960K 99 0 ether_multi 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 25 122K 122K 166960K 25 0 exec 0 0K 1K 166960K 390 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 311 83K 85K 166960K 542262 0 UVM aobj 131 4K 4K 166960K 192 0 pinsyscall 26 52K 108K 166960K 1275 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 12 0K 1K 166960K 28 0 temp 73 6808K 6936K 166960K 154992 0 kqueue 12 18K 24K 166960K 4159 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 37 0 34 1 0 1 1 0 8 0 rtentry 112 112 0 1 4 0 4 4 0 8 0 unpcb 144 20189 0 20174 95 93 2 10 0 8 1 syncache 336 4 0 4 1 1 0 1 0 8 0 tcpqe 32 286 0 286 1 1 0 1 0 8 0 tcpcb 808 2380 0 2375 52 51 1 8 0 8 0 arp 120 18 0 0 1 0 1 1 0 8 0 inpcb 392 7359 0 7351 130 128 2 14 0 8 1 nd6 136 25 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 pffrag 232 471 0 469 5 4 1 2 0 482 0 pffrnode 88 288 0 286 3 2 1 1 0 8 0 pffrent 40 2093 0 2091 3 2 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 24 112 0 109 1 0 1 1 0 8 0 pfstkey 128 112 0 109 1 0 1 1 0 8 0 pfstate 376 112 0 109 5 4 1 3 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 455 0 0 29 0 29 29 0 8 0 art_table 32 456 0 0 4 0 4 4 0 8 0 art_node 16 111 0 10 1 0 1 1 0 8 0 sysvmsgpl 40 14 0 0 1 0 1 1 0 8 0 semapl 112 1808 0 1798 1 0 1 1 0 8 0 shmpl 112 189 0 61 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 63852 0 62280 99 0 99 99 0 8 0 ffsino 272 63852 0 62280 105 0 105 105 0 8 0 nchpl 144 133988 0 132209 67 0 67 67 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 342990 0 342988 4 2 2 2 0 8 1 percpumem 16 46 0 0 1 0 1 1 0 8 0 kstatmem 264 24 0 0 2 0 2 2 0 8 0 scxspl 216 380451 0 380451 11 10 1 8 1 8 1 plimitpl 152 34 0 18 1 0 1 1 0 8 0 sigapl 424 62058 0 61993 9 1 8 8 0 8 0 futexpl 64 289234 0 289234 1 0 1 1 0 8 1 knotepl 120 141 0 0 4 0 4 4 0 8 0 kqueuepl 216 10592 0 10584 101 100 1 8 0 8 0 pipepl 320 18702 0 18674 160 154 6 11 0 8 3 fdescpl 496 62020 0 61994 5 1 4 5 0 8 0 filepl 152 211838 0 211597 225 211 14 20 0 8 4 lockfpl 104 4068 0 4066 6 5 1 2 0 8 0 lockfspl 48 1662 0 1660 1 0 1 1 0 8 0 sessionpl 144 24 0 7 1 0 1 1 0 8 0 pgrppl 48 1097 0 1080 1 0 1 1 0 8 0 ucredpl 104 141 0 129 1 0 1 1 0 8 0 zombiepl 144 61994 0 61993 1 0 1 1 0 8 0 processpl 1136 62058 0 61993 5 0 5 5 0 8 0 procpl 680 140423 0 140342 54 46 8 9 0 8 0 sockpl 584 27585 0 27559 231 226 5 20 0 8 3 mcl64k 65536 25 0 0 3 0 3 3 0 8 0 mcl16k 16384 29 0 0 4 2 2 3 0 8 0 mcl12k 12288 57 0 0 2 0 2 2 0 8 0 mcl9k 9216 58 0 0 2 0 2 2 0 8 0 mcl8k 8192 34 0 0 4 1 3 3 0 8 0 mcl4k 4096 49 0 0 6 3 3 3 0 8 0 mcl2k2 2112 24 0 0 2 0 2 2 0 8 0 mcl2k 2048 402 0 0 34 15 19 34 0 8 0 mtagpl 96 1 0 0 1 0 1 1 0 8 0 mbufpl 256 1863 0 0 21 6 15 18 0 8 0 bufpl 280 66317 0 60056 448 0 448 448 0 8 0 anonpl 24 4321939 0 4313498 77 21 56 56 0 186 0 amapchunkpl 152 1701564 0 1700884 213 180 33 35 0 158 2 amappl16 200 65456 0 65249 51 39 12 12 0 8 0 amappl15 192 29 0 28 1 0 1 1 0 8 0 amappl14 184 162 0 148 2 1 1 2 0 8 0 amappl13 176 32 0 30 1 0 1 1 0 8 0 amappl12 168 62698 0 62669 4 2 2 3 0 8 0 amappl11 160 60 0 46 1 0 1 1 0 8 0 amappl10 152 53 0 40 1 0 1 1 0 8 0 amappl9 144 215 0 215 18 18 0 1 0 8 0 amappl8 136 1095 0 1013 3 0 3 3 0 8 0 amappl7 128 107 0 93 1 0 1 1 0 8 0 amappl6 120 457 0 440 2 1 1 2 0 8 0 amappl5 112 979 0 964 1 0 1 1 0 8 0 amappl4 104 899 0 860 3 1 2 3 0 8 0 amappl3 96 343260 0 343194 7 4 3 3 0 8 1 amappl2 88 63844 0 63772 4 2 2 4 0 8 0 amappl1 80 211952 0 211416 23 10 13 23 0 8 0 amappl 88 541588 0 541408 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 72 191 0 61 3 0 3 3 0 8 0 uaddrrnd 24 62020 0 61994 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 62020 0 61994 1 0 1 1 0 8 0 vmmpekpl 168 425514 0 425472 3 0 3 3 0 8 0 vmmpepl 168 3263833 0 3261856 235 137 98 120 0 357 3 vmsppl 448 62019 0 61994 5 1 4 4 0 8 0 rwobjpl 56 678187 0 670856 112 7 105 105 0 8 0 pdppl 4096 124047 0 123988 2856 2789 67 79 0 8 8 pvpl 32 48793 0 0 395 1 394 394 0 265 0 pmappl 248 62019 0 61994 3 1 2 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 3515 0 3145 11 0 11 11 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace ktrops(ffff80002a1a8800,deafbeaddeafbead,0,80000002,fffffd8076d601c8,fffffd807f7d7888) at ktrops+0x4f ktrcanset sys/kern/kern_ktrace.c:718 [inline] ktrops(ffff80002a1a8800,deafbeaddeafbead,0,80000002,fffffd8076d601c8,fffffd807f7d7888) at ktrops+0x4f sys/kern/kern_ktrace.c:561 doktrace(fffffd8076d601c8,4,2,0,ffff80002a1a8800) at doktrace+0x514 ktrsetchildren sys/kern/kern_ktrace.c:586 [inline] doktrace(fffffd8076d601c8,4,2,0,ffff80002a1a8800) at doktrace+0x514 sys/kern/kern_ktrace.c:508 sys_ktrace(ffff80002a1a8800,ffff800037378090,ffff800037377ff0) at sys_ktrace+0xd6 sys/kern/kern_ktrace.c:549 syscall(ffff800037378090) at syscall+0x53b mi_syscall sys/sys/syscall_mi.h:183 [inline] syscall(ffff800037378090) at syscall+0x53b sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7453725d310, count: -5 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800029cebff0) 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(ffffffff82d60af0) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d60af0) at __mp_lock+0x122 sys/kern/kern_lock.c:147 syscall(ffff80002a1dab20) at syscall+0x21f mi_syscall sys/sys/syscall_mi.h:154 [inline] syscall(ffff80002a1dab20) at syscall+0x21f sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x76e454ed36f0, count: -6