uvm_fault(0xfffffd80649699b0, 0x0, 0, 1) -> e kernel: page fault trap, code=0 Stopped at dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 TID PID UID PRFLAGS PFLAGS CPU COMMAND 250783 12135 0 0x2 0x1 1 syz-executor dt_ioctl_record_stop(ffff800001488000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(31e5f,81,2000,ffff8000ffff2fa0) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(31e5f,81,2000,ffff8000ffff2fa0) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff800039422c90) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8064deb890,81,fffffd80097fb000,ffff8000ffff2fa0) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd80651671b0,ffff8000ffff2fa0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd80651671b0,ffff8000ffff2fa0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd80651671b0,ffff8000ffff2fa0) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd80651671b0,ffff8000ffff2fa0) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff8000ffff2fa0) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff8000ffff2fa0,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000ffff2fa0,ffff800039423000,ffff800039422f50) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800039423000) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800039423000) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7cf8596a2de0, count: 3 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(0xfffffd80649699b0, 0x0, 0, 1) -> e ddb{0}> trace dt_ioctl_record_stop(ffff800001488000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(31e5f,81,2000,ffff8000ffff2fa0) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(31e5f,81,2000,ffff8000ffff2fa0) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff800039422c90) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8064deb890,81,fffffd80097fb000,ffff8000ffff2fa0) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd80651671b0,ffff8000ffff2fa0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd80651671b0,ffff8000ffff2fa0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd80651671b0,ffff8000ffff2fa0) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd80651671b0,ffff8000ffff2fa0) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff8000ffff2fa0) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff8000ffff2fa0,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000ffff2fa0,ffff800039423000,ffff800039422f50) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800039423000) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800039423000) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7cf8596a2de0, count: -12 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff800039422bc0 rbx 0x1 rdx 0 rcx 0xffff8000ffff2fa0 rax 0xffffffff837e0008 dt_prov_syscall r8 0x2 r9 0 r10 0x4a3511bc70b4bf0a r11 0x3e67888288217892 r12 0 r13 0 r14 0 r15 0xffff8000014a8600 rip 0xffffffff81997a38 dt_ioctl_record_stop+0x108 cs 0x8 rflags 0x10207 __ALIGN_SIZE+0xf207 rsp 0xffff800039422b90 ss 0x10 dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 ddb{0}> show proc PROC (syz-executor) tid=221093 pid=40920 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff8000ffff2fa0 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80003300a030,0xffff800033009270 process=0xffff800039425d00 user=0xffff80003941e000, vmspace=0xfffffd80649699b0 estcpu=36, cpticks=12, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 46126 88573 12135 0 2 0 syz-executor 46126 425697 12135 0 2 0x4000000 syz-executor 46126 146991 12135 0 3 0x4000080 fsleep syz-executor 47748 55785 47072 0 3 0x80 nanoslp syz-executor 47748 433485 47072 0 3 0x4000080 kqsel syz-executor 4673 400694 1 0 3 0x100083 ttyin getty 23724 461272 0 0 3 0x14200 bored sosplice 47072 487701 95235 0 2 0x3 syz-executor 74240 340539 95235 0 2 0x3 syz-executor 81015 58964 95235 0 2 0x3 syz-executor 86904 406305 95235 0 2 0x3 syz-executor 12135 250783 95235 0 7 0x3 syz-executor 83081 54426 95235 0 2 0x3 syz-executor 73909 331876 95235 0 2 0x3 syz-executor 90810 7749 95235 0 3 0x82 wait syz-executor 95235 434162 39198 0 3 0x82 kqread syz-executor 39198 469582 76674 0 3 0x10008a sigsusp ksh 76674 220955 59972 0 3 0x98 kqread sshd-session 59972 216292 21878 0 3 0x92 kqread sshd-session 21878 57930 1 0 3 0x88 kqread sshd 5564 217855 69737 74 3 0x1100092 bpf pflogd 69737 255796 1 0 3 0x80 sbwait pflogd 33417 494182 92818 73 3 0x1100090 kqread syslogd 92818 45296 1 0 3 0x100082 sbwait syslogd 27555 855 1 0 3 0x100080 kqread resolvd 51065 499344 74556 77 3 0x100092 kqread dhcpleased 63908 173586 74556 77 3 0x100092 kqread dhcpleased 74556 493712 1 0 3 0x80 kqread dhcpleased 86751 211648 0 0 3 0x14200 bored smr 8288 31501 0 0 2 0x14200 zerothread 24285 320283 0 0 3 0x14200 aiodoned aiodoned 68852 407231 0 0 3 0x14200 syncer update 33974 467756 0 0 3 0x14200 cleaner cleaner 54645 372525 0 0 3 0x14200 reaper reaper 52383 442771 0 0 3 0x14200 pgdaemon pagedaemon 71506 467974 0 0 3 0x14200 bored viomb 23030 202969 0 0 3 0x40014200 acpi0 acpi0 87427 335827 0 0 3 0x40014200 idle1 25735 12429 0 0 3 0x14200 bored softnet7 8551 211429 0 0 3 0x14200 bored softnet6 6954 269298 0 0 3 0x14200 bored softnet5 15498 434005 0 0 3 0x14200 bored softnet4 66863 353019 0 0 3 0x14200 bored softnet3 75143 306182 0 0 3 0x14200 bored softnet2 96839 147723 0 0 3 0x14200 bored softnet1 43729 394154 0 0 3 0x14200 bored softnet0 33737 33253 0 0 3 0x14200 bored systqmp 1767 311935 0 0 3 0x14200 bored systq 99882 498855 0 0 3 0x14200 tmoslp softclockmp 22704 249947 0 0 2 0x40014200 softclock 62730 62416 0 0 3 0x40014200 idle0 1 459337 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 46126 (syz-executor) thread 0xffff800033008568 (425697) exclusive rrwlock inode r = 0 (0xfffffd806e1a0328) #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 ufs_ihashins+0x4f ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline] #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:159 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1232 #6 ffs_inode_alloc+0x279 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_makeinode+0xcd sys/ufs/ufs/ufs_vnops.c:1732 #8 ufs_mknod+0x5b sys/ufs/ufs/ufs_vnops.c:167 #9 VOP_MKNOD+0x101 sys/kern/vfs_vops.c:121 #10 domknodat+0x469 sys/kern/vfs_syscalls.c:1640 #11 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #11 syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 #12 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806e3dc920) #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 domknodat+0xb4 sys/kern/vfs_syscalls.c:1592 #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 10220 11047K 12413K 166960K 12047 0 pcb 19 18K 21K 166960K 266 0 rtable 177 8K 11K 166960K 586 0 pf 38 18K 131089K 166960K 121 0 ifaddr 39 6K 7K 166960K 76 0 ifgroup 57 2K 2K 166960K 113 0 sysctl 3 1K 9K 166960K 11 0 counters 70 37K 37K 166960K 140 0 ioctlops 0 0K 4K 166960K 1566 0 iov 0 0K 16K 166960K 22 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1534 96K 96K 166960K 1985 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 9K 166960K 9 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 17 0 dirhash 12 2K 2K 166960K 27 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 85K 166960K 660 0 sigio 0 0K 0K 166960K 14 0 proc 72 115K 147K 166960K 610 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 138 0 in_multi 80 5K 6K 166960K 133 0 ether_multi 1 0K 0K 166960K 7 0 mrt 0 0K 0K 166960K 6 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 91 413K 413K 166960K 91 0 exec 0 0K 1K 166960K 599 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 247 168K 178K 166960K 7906 0 UVM aobj 16 2K 2K 166960K 16 0 pinsyscall 42 84K 100K 166960K 1821 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 33 0 NDP 13 0K 1K 166960K 50 0 temp 128 8649K 8720K 166960K 32661 0 kqueue 13 20K 30K 166960K 131 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 120 182 0 179 3 1 2 3 0 8 1 rtentry 176 173 0 103 5 0 5 5 0 8 0 unpcb 144 450 0 431 5 4 1 4 0 8 0 syncache 336 10 0 10 2 1 1 1 0 8 1 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 736 307 0 302 13 5 8 10 0 8 7 arp 128 10 0 2 1 0 1 1 0 8 0 inpcb 328 820 0 809 15 7 8 12 0 8 6 nd6 144 19 0 4 1 0 1 1 0 8 0 pkpcb 40 9 0 9 2 2 0 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 30 0 29 2 1 1 1 0 8 0 pppxif 1504 4 0 4 2 1 1 1 0 8 1 pffrag 232 37 0 35 1 0 1 1 0 482 0 pffrnode 88 36 0 34 1 0 1 1 0 8 0 pffrent 40 72 0 70 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 9 0 9 1 1 0 1 0 8 0 pfanchor 1288 4 0 1 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 57 0 15 1 0 1 1 0 8 0 pfstkey 128 57 0 15 2 0 2 2 0 8 0 pfstate 384 56 0 15 6 0 6 6 0 8 0 pfrule 1344 27 0 21 2 1 1 2 0 8 0 rttmr 136 3 0 3 2 1 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 522 0 174 28 2 26 28 0 8 1 art_table 40 524 0 174 5 0 5 5 0 8 0 art_node 32 171 0 109 2 1 1 2 0 8 0 sysvmsgpl 40 15 0 5 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 15 0 5 1 0 1 1 0 8 0 shmpl 112 13 0 0 1 0 1 1 0 8 0 dirhash 1024 27 0 10 3 0 3 3 0 8 0 dino2pl 256 2682 0 1169 95 0 95 95 0 8 0 ffsino 296 2682 0 1169 117 0 117 117 0 8 0 nchpl 144 3603 0 1905 63 0 63 63 0 8 0 rtmask 32 6 0 6 2 1 1 1 0 8 1 uvmvnodes 80 3123 0 0 64 0 64 64 0 8 0 vnodes 216 3123 0 0 174 0 174 174 0 8 0 namei 1024 12191 0 12190 3 1 2 2 0 8 1 percpumem 16 85 0 35 1 0 1 1 0 8 0 pfiaddrpl 120 3 0 3 1 1 0 1 0 8 0 kstatmem 264 70 0 40 3 0 3 3 0 8 0 scsiplug 72 3 0 3 2 2 0 1 0 8 0 scxspl 216 17240 0 17240 9 8 1 8 1 8 1 plimitpl 152 101 0 81 1 0 1 1 0 8 0 sigapl 424 986 0 932 7 0 7 7 0 8 0 knotepl 120 531 0 0 17 0 17 17 0 8 0 kqueuepl 224 255 0 245 4 3 1 3 0 8 0 pipepl 344 221 0 194 9 6 3 9 0 8 0 fdescpl 528 961 0 930 3 0 3 3 0 8 0 filepl 160 5686 0 5457 22 6 16 17 0 8 5 lockfpl 104 211 0 209 1 0 1 1 0 8 0 lockfspl 48 85 0 83 1 0 1 1 0 8 0 sessionpl 144 31 0 22 1 0 1 1 0 8 0 pgrppl 48 53 0 36 1 0 1 1 0 8 0 ucredpl 104 870 0 857 1 0 1 1 0 8 0 zombiepl 144 1033 0 1028 1 0 1 1 0 8 0 processpl 1232 986 0 932 5 0 5 5 0 8 0 procpl 664 1946 0 1889 8 1 7 7 0 8 0 sosppl 168 9 0 9 2 1 1 1 0 8 1 sockpl 752 1474 0 1441 28 17 11 21 0 8 7 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 121 0 0 16 0 16 16 0 8 0 mcl2k 2048 24 0 0 3 0 3 3 0 8 0 mtagpl 96 1 0 0 1 0 1 1 0 8 0 mbufpl 256 282 0 0 17 0 17 17 0 8 0 bufpl 280 7747 0 1604 440 0 440 440 0 8 0 anonpl 32 13280 0 0 108 1 107 107 0 246 0 amapchunkpl 152 26609 0 25914 49 16 33 34 0 158 1 amappl16 200 3696 0 3485 36 16 20 20 0 8 0 amappl15 192 8 0 8 2 1 1 1 0 8 1 amappl14 184 129 0 117 1 0 1 1 0 8 0 amappl13 176 7 0 6 1 0 1 1 0 8 0 amappl12 168 1632 0 1601 3 1 2 2 0 8 0 amappl11 160 51 0 37 1 0 1 1 0 8 0 amappl10 152 17 0 17 1 1 0 1 0 8 0 amappl9 144 249 0 249 1 1 0 1 0 8 0 amappl8 136 28 0 26 1 0 1 1 0 8 0 amappl7 128 189 0 177 1 0 1 1 0 8 0 amappl6 120 193 0 190 1 0 1 1 0 8 0 amappl5 112 123 0 114 1 0 1 1 0 8 0 amappl4 104 340 0 319 1 0 1 1 0 8 0 amappl3 96 4988 0 4874 5 1 4 4 0 8 0 amappl2 88 711 0 648 2 0 2 2 0 8 0 amappl1 80 12273 0 11667 15 0 15 15 0 8 0 amappl 88 7061 0 6888 5 0 5 5 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 7 0 7 2 1 1 1 0 8 1 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 15 0 0 1 0 1 1 0 8 0 uaddrrnd 24 961 0 930 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 961 0 930 1 0 1 1 0 8 0 vmmpekpl 168 10350 0 10315 2 0 2 2 0 8 0 vmmpepl 168 69416 0 67229 121 14 107 107 0 357 0 vmsppl 488 960 0 930 6 1 5 5 0 8 1 rwobjpl 80 24737 0 20475 92 0 92 92 0 8 1 pdppl 4096 1930 0 1860 98 24 74 84 0 8 4 pvpl 32 22354 0 0 181 1 180 180 0 265 0 pmappl 256 960 0 930 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 289 0 35 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace dt_ioctl_record_stop(ffff800001488000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(31e5f,81,2000,ffff8000ffff2fa0) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(31e5f,81,2000,ffff8000ffff2fa0) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff800039422c90) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8064deb890,81,fffffd80097fb000,ffff8000ffff2fa0) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd80651671b0,ffff8000ffff2fa0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd80651671b0,ffff8000ffff2fa0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd80651671b0,ffff8000ffff2fa0) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd80651671b0,ffff8000ffff2fa0) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff8000ffff2fa0) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff8000ffff2fa0,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000ffff2fa0,ffff800039423000,ffff800039422f50) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800039423000) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800039423000) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7cf8596a2de0, count: -12 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(ffffffff839a0500) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839a0500) at __mp_lock+0x192 sys/kern/kern_lock.c:165 ktrsysret(ffff8000ffff3c98,b,0,ffff80002a3818a0) at ktrsysret+0xde ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline] ktrsysret(ffff8000ffff3c98,b,0,ffff80002a3818a0) at ktrsysret+0xde sys/kern/kern_ktrace.c:209 syscall(ffff80002a381950) at syscall+0xa50 mi_syscall_return sys/sys/syscall_mi.h:204 [inline] syscall(ffff80002a381950) at syscall+0xa50 sys/arch/amd64/amd64/trap.c:769 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6fa4a5e070d0, 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(ffffffff839a0500) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839a0500) at __mp_lock+0x192 sys/kern/kern_lock.c:165 ktrsysret(ffff8000ffff3c98,b,0,ffff80002a3818a0) at ktrsysret+0xde ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline] ktrsysret(ffff8000ffff3c98,b,0,ffff80002a3818a0) at ktrsysret+0xde sys/kern/kern_ktrace.c:209 syscall(ffff80002a381950) at syscall+0xa50 mi_syscall_return sys/sys/syscall_mi.h:204 [inline] syscall(ffff80002a381950) at syscall+0xa50 sys/arch/amd64/amd64/trap.c:769 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6fa4a5e070d0, count: -7