uvm_fault(0xffffffff838fce98, 0xffff80001f3c200c, 0, 1) -> d kernel: page fault trap, code=0 Stopped at ufs_direnter+0x23b: movl 0(%r14),%r15d TID PID UID PRFLAGS PFLAGS CPU COMMAND *271823 6108 0 0 0x4000000 0K syz-executor 94571 61000 0 0x2 0x1 1 syz-executor ufs_direnter(fffffd806ae57888,fffffd80684aba40,ffff8000317de388,ffff8000317de6e8,0) at ufs_direnter+0x23b sys/ufs/ufs/ufs_lookup.c:764 ufs_makeinode(2000,fffffd806ae57888,ffff8000317de6b8,ffff8000317de6e8) at ufs_makeinode+0x51b sys/ufs/ufs/ufs_vnops.c:1768 ufs_mknod(ffff8000317de560) at ufs_mknod+0x5b sys/ufs/ufs/ufs_vnops.c:167 VOP_MKNOD(fffffd806ae57888,ffff8000317de6b8,ffff8000317de6e8,ffff8000317de5e8) at VOP_MKNOD+0x101 sys/kern/vfs_vops.c:121 domknodat(ffff8000357f3250,ffffff9c,200000000000,2000,285b9a) at domknodat+0x469 sys/kern/vfs_syscalls.c:1640 syscall(ffff8000317de880) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000317de880) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x49f5f6b4ab0, count: 8 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(0xffffffff838fce98, 0xffff80001f3c200c, 0, 1) -> d ddb{0}> trace ufs_direnter(fffffd806ae57888,fffffd80684aba40,ffff8000317de388,ffff8000317de6e8,0) at ufs_direnter+0x23b sys/ufs/ufs/ufs_lookup.c:764 ufs_makeinode(2000,fffffd806ae57888,ffff8000317de6b8,ffff8000317de6e8) at ufs_makeinode+0x51b sys/ufs/ufs/ufs_vnops.c:1768 ufs_mknod(ffff8000317de560) at ufs_mknod+0x5b sys/ufs/ufs/ufs_vnops.c:167 VOP_MKNOD(fffffd806ae57888,ffff8000317de6b8,ffff8000317de6e8,ffff8000317de5e8) at VOP_MKNOD+0x101 sys/kern/vfs_vops.c:121 domknodat(ffff8000357f3250,ffffff9c,200000000000,2000,285b9a) at domknodat+0x469 sys/kern/vfs_syscalls.c:1640 syscall(ffff8000317de880) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000317de880) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x49f5f6b4ab0, count: -7 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff8000317de370 rbx 0xfffffd80097fb7b8 rdx 0xffff8000014b1b00 rcx 0xffff8000357f3250 rax 0xffffffff83799ff0 cpu_info_full_primary+0x1ff0 r8 0xffffffffffffffff r9 0 r10 0x99f3eda2061019ec r11 0xdf393cf1676dd262 r12 0xfffffd806b7f8700 r13 0xfffffd807e01a638 r14 0xffff80001f3c200c r15 0 rip 0xffffffff81d2917b ufs_direnter+0x23b cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000317de2d0 ss 0 ufs_direnter+0x23b: movl 0(%r14),%r15d ddb{0}> show proc PROC (syz-executor) tid=271823 pid=6108 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=17, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000357f3a18,0xffff8000357f2a98 process=0xffff8000fffe5360 user=0xffff8000317d9000, vmspace=0xfffffd805da52030 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 51193 391499 15172 0 2 0 syz-executor 51193 505632 15172 0 3 0x4000080 fsleep syz-executor 81824 214801 21517 0 2 0 syz-executor 81824 58694 21517 0 3 0x4000080 fsleep syz-executor 6108 250552 20422 0 2 0 syz-executor * 6108 271823 20422 0 7 0x4000000 syz-executor 76840 127727 90124 0 2 0 syz-executor 76840 91034 90124 0 3 0x4000080 fsleep syz-executor 76840 400098 90124 0 3 0x4000080 fsleep syz-executor 78761 269751 20134 0 2 0xc90 syz-executor 78761 249066 20134 0 3 0x4000090 ttyin syz-executor 78761 101886 20134 0 3 0x4000090 fsleep syz-executor 78761 423160 20134 0 3 0x4000090 fsleep syz-executor 50671 194298 0 0 3 0x14200 acct acct 21517 436595 72472 0 2 0xc82 syz-executor 20422 123358 72472 0 2 0xc82 syz-executor 61393 287421 0 0 3 0x14200 bored sosplice 91940 145543 72472 0 2 0xc82 syz-executor 61000 94571 72472 0 7 0x3 syz-executor 90124 30239 72472 0 2 0xc82 syz-executor 87438 478277 72472 0 2 0x2 syz-executor 20134 283745 72472 0 2 0xc82 syz-executor 15172 253138 72472 0 2 0xc82 syz-executor 72472 278750 98533 0 3 0x82 kqread syz-executor 98533 297456 94457 0 3 0x10008a sigsusp ksh 94457 62746 61295 0 3 0x98 kqread sshd-session 61295 231211 4083 0 3 0x92 kqread sshd-session 52283 42954 1 0 3 0x100083 ttyin getty 4083 442505 1 0 3 0x88 kqread sshd 80294 230677 4505 74 3 0x1100092 bpf pflogd 4505 162580 1 0 3 0x80 sbwait pflogd 5330 493889 18596 73 3 0x1100090 kqread syslogd 18596 77467 1 0 3 0x100082 sbwait syslogd 46376 348238 1 0 3 0x100080 kqread resolvd 75798 92898 86924 77 3 0x100092 kqread dhcpleased 67891 409298 86924 77 3 0x100092 kqread dhcpleased 86924 143843 1 0 3 0x80 kqread dhcpleased 72661 445894 0 0 3 0x14200 bored smr 98782 221036 0 0 2 0x14200 zerothread 55809 240524 0 0 3 0x14200 aiodoned aiodoned 81318 230630 0 0 3 0x14200 syncer update 16751 460836 0 0 3 0x14200 cleaner cleaner 78290 52640 0 0 3 0x14200 reaper reaper 71947 517605 0 0 3 0x14200 pgdaemon pagedaemon 9583 462006 0 0 3 0x14200 bored viomb 58398 59537 0 0 3 0x40014200 acpi0 acpi0 51807 266901 0 0 3 0x40014200 idle1 5480 438001 0 0 3 0x14200 bored softnet1 16732 340978 0 0 3 0x14200 bored softnet0 50539 455046 0 0 3 0x14200 bored systqmp 97010 408611 0 0 3 0x14200 bored systq 49215 191638 0 0 3 0x14200 tmoslp softclockmp 28921 491584 0 0 3 0x40014200 tmoslp softclock 7027 20300 0 0 3 0x40014200 idle0 1 406055 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 6108 (syz-executor) thread 0xffff8000357f3250 (271823) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff838f9630) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 #2 sleep_finish+0x2d8 sys/kern/kern_synch.c:367 #3 biowait+0xc6 sys/kern/vfs_bio.c:1242 #4 bwrite+0x2e7 sys/kern/vfs_bio.c:754 #5 ffs_update+0x2fe sys/ufs/ffs/ffs_inode.c:111 #6 ufs_makeinode+0x4b0 sys/ufs/ufs/ufs_vnops.c:1764 #7 ufs_mknod+0x5b sys/ufs/ufs/ufs_vnops.c:167 #8 VOP_MKNOD+0x101 sys/kern/vfs_vops.c:121 #9 domknodat+0x469 sys/kern/vfs_syscalls.c:1640 #10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806e920480) #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:746 #12 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd807e01a6d8) #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:746 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10226 11084K 12324K 166960K 12832 0 pcb 50 15K 16K 166960K 223 0 rtable 184 9K 9K 166960K 378 0 pf 31 17K 81K 166960K 166 0 ifaddr 34 6K 7K 166960K 77 0 ifgroup 47 2K 2K 166960K 114 0 sysctl 4 1K 9K 166960K 17 0 counters 64 36K 37K 166960K 140 0 ioctlops 0 0K 4K 166960K 1750 0 iov 0 0K 24K 166960K 43 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1515 95K 95K 166960K 2316 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 9 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 99 0 dirhash 12 2K 2K 166960K 27 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 236K 166960K 829 0 sigio 0 0K 0K 166960K 26 0 proc 72 115K 164K 166960K 651 0 subproc 72 4K 4K 166960K 90 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 111 0 in_multi 74 5K 7K 166960K 139 0 ether_multi 1 0K 0K 166960K 5 0 mrt 0 0K 0K 166960K 7 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 253 1129K 1129K 166960K 253 0 exec 0 0K 1K 166960K 487 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 236 175K 190K 166960K 9015 0 UVM aobj 17 2K 2K 166960K 17 0 pinsyscall 41 82K 100K 166960K 1999 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 2 0K 0K 166960K 46 0 NDP 10 0K 2K 166960K 54 0 temp 64 8649K 8721K 166960K 30688 0 kqueue 14 22K 31K 166960K 185 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 91 0 88 1 0 1 1 0 8 0 rtentry 176 122 0 50 5 0 5 5 0 8 0 unpcb 144 656 0 638 4 2 2 4 0 8 1 syncache 336 7 0 7 2 1 1 1 0 8 1 tcpqe 32 2 0 2 2 1 1 1 0 8 1 tcpcb 736 237 0 227 7 0 7 7 0 8 6 arp 136 13 0 4 1 0 1 1 0 8 0 inpcb 328 759 0 712 12 5 7 7 0 8 2 nd6 144 23 0 8 1 0 1 1 0 8 0 pkpcb 40 3 0 3 3 2 1 1 0 8 1 kcovpl 48 10 0 2 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1192 31 0 31 2 1 1 1 0 8 1 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pffrag 232 6 0 1 1 0 1 1 0 482 0 pffrnode 88 6 0 1 1 0 1 1 0 8 0 pffrent 40 13 0 8 1 0 1 1 0 8 0 pfosfp 40 1428 0 1428 5 0 5 5 0 8 5 pfosfpen 112 1428 0 1428 21 0 21 21 0 8 21 pfrktable 1344 1 0 1 1 1 0 1 0 8 0 pfstitem 24 61 0 14 1 0 1 1 0 8 0 pfstkey 128 65 0 18 2 0 2 2 0 8 0 pfstate 384 63 0 16 5 0 5 5 0 8 0 pfrule 1344 23 0 17 2 0 2 2 0 8 0 rttmr 136 2 0 2 2 2 0 1 0 8 0 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 543 0 209 30 2 28 29 0 8 2 art_table 40 547 0 209 5 0 5 5 0 8 0 art_node 32 122 0 58 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 1 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 95 0 85 1 0 1 1 0 8 0 shmpl 112 14 0 0 1 0 1 1 0 8 0 dirhash 1024 27 0 10 3 0 3 3 0 8 0 dino2pl 256 2865 0 1361 95 0 95 95 0 8 0 ffsino 296 2865 0 1361 117 0 117 117 0 8 0 nchpl 144 4008 0 2306 64 0 64 64 0 8 0 rtmask 32 7 0 7 2 1 1 1 0 8 1 uvmvnodes 80 3586 0 0 74 0 74 74 0 8 0 vnodes 216 3586 0 0 200 0 200 200 0 8 0 namei 1024 14539 0 14538 1 0 1 1 0 8 0 percpumem 16 85 0 38 1 0 1 1 0 8 0 kstatmem 264 70 0 48 3 1 2 3 0 8 0 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 216 21086 0 21086 12 9 3 8 1 8 3 plimitpl 152 257 0 239 1 0 1 1 0 8 0 sigapl 424 1119 0 1071 7 1 6 7 0 8 0 knotepl 120 560 0 0 17 0 17 17 0 8 0 kqueuepl 224 509 0 433 9 2 7 7 0 8 2 pipepl 344 253 0 226 9 0 9 9 0 8 5 fdescpl 528 1101 0 1071 3 0 3 3 0 8 0 filepl 160 7226 0 6890 24 5 19 20 0 8 4 lockfpl 104 486 0 484 2 1 1 2 0 8 0 lockfspl 48 136 0 134 1 0 1 1 0 8 0 sessionpl 144 28 0 19 1 0 1 1 0 8 0 pgrppl 48 49 0 32 1 0 1 1 0 8 0 ucredpl 104 1259 0 1245 1 0 1 1 0 8 0 zombiepl 144 1072 0 1071 2 1 1 1 0 8 0 processpl 1232 1119 0 1071 5 0 5 5 0 8 0 procpl 664 2298 0 2242 6 0 6 6 0 8 0 sosppl 168 4 0 4 2 2 0 1 0 8 0 sockpl 752 1529 0 1461 19 8 11 17 0 8 3 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 111 0 0 14 0 14 14 0 8 0 mcl2k 2048 41 0 0 6 0 6 6 0 8 0 mtagpl 96 5 0 0 1 0 1 1 0 8 0 mbufpl 256 219 0 0 14 0 14 14 0 8 0 bufpl 280 9501 0 3358 439 0 439 439 0 8 0 anonpl 32 10481 0 0 86 1 85 85 0 246 0 amapchunkpl 152 30484 0 30013 36 7 29 33 0 158 6 amappl16 200 4617 0 4585 30 17 13 19 0 8 4 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 130 0 118 1 0 1 1 0 8 0 amappl13 176 8 0 8 2 2 0 1 0 8 0 amappl12 168 1800 0 1769 3 1 2 2 0 8 0 amappl11 160 57 0 43 1 0 1 1 0 8 0 amappl10 152 4 0 4 1 1 0 1 0 8 0 amappl9 144 279 0 278 2 1 1 1 0 8 0 amappl8 136 50 0 48 1 0 1 1 0 8 0 amappl7 128 146 0 133 1 0 1 1 0 8 0 amappl6 120 206 0 202 1 0 1 1 0 8 0 amappl5 112 131 0 121 1 0 1 1 0 8 0 amappl4 104 325 0 306 1 0 1 1 0 8 0 amappl3 96 5110 0 5017 4 1 3 3 0 8 0 amappl2 88 1369 0 1291 2 0 2 2 0 8 0 amappl1 80 12097 0 11502 15 1 14 15 0 8 0 amappl 88 8143 0 7982 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 6 0 6 1 1 0 1 0 8 0 dma128 128 254 0 254 2 2 0 1 0 8 0 dma64 64 7 0 7 2 2 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 16 0 0 1 0 1 1 0 8 0 uaddrrnd 24 1101 0 1071 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1101 0 1071 1 0 1 1 0 8 0 vmmpekpl 168 10956 0 10911 3 0 3 3 0 8 0 vmmpepl 168 76659 0 74722 112 9 103 104 0 357 1 vmsppl 488 1100 0 1071 7 2 5 5 0 8 0 rwobjpl 80 26976 0 22446 98 0 98 98 0 8 0 pdppl 4096 2210 0 2142 108 34 74 84 0 8 6 pvpl 32 19531 0 0 158 0 158 158 0 265 0 pmappl 256 1100 0 1071 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 294 0 40 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace ufs_direnter(fffffd806ae57888,fffffd80684aba40,ffff8000317de388,ffff8000317de6e8,0) at ufs_direnter+0x23b sys/ufs/ufs/ufs_lookup.c:764 ufs_makeinode(2000,fffffd806ae57888,ffff8000317de6b8,ffff8000317de6e8) at ufs_makeinode+0x51b sys/ufs/ufs/ufs_vnops.c:1768 ufs_mknod(ffff8000317de560) at ufs_mknod+0x5b sys/ufs/ufs/ufs_vnops.c:167 VOP_MKNOD(fffffd806ae57888,ffff8000317de6b8,ffff8000317de6e8,ffff8000317de5e8) at VOP_MKNOD+0x101 sys/kern/vfs_vops.c:121 domknodat(ffff8000357f3250,ffffff9c,200000000000,2000,285b9a) at domknodat+0x469 sys/kern/vfs_syscalls.c:1640 syscall(ffff8000317de880) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000317de880) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x49f5f6b4ab0, count: -7 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(ffffffff838f9428) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff838f9428) at __mp_lock+0x1a3 sys/kern/kern_lock.c:165 ktrsysret(ffff80002a270548,88,16,ffff80002a3ae190) at ktrsysret+0xde ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline] ktrsysret(ffff80002a270548,88,16,ffff80002a3ae190) at ktrsysret+0xde sys/kern/kern_ktrace.c:209 syscall(ffff80002a3ae240) at syscall+0xa50 mi_syscall_return sys/sys/syscall_mi.h:204 [inline] syscall(ffff80002a3ae240) at syscall+0xa50 sys/arch/amd64/amd64/trap.c:767 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x789607af2ec0, 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(ffffffff838f9428) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff838f9428) at __mp_lock+0x1a3 sys/kern/kern_lock.c:165 ktrsysret(ffff80002a270548,88,16,ffff80002a3ae190) at ktrsysret+0xde ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline] ktrsysret(ffff80002a270548,88,16,ffff80002a3ae190) at ktrsysret+0xde sys/kern/kern_ktrace.c:209 syscall(ffff80002a3ae240) at syscall+0xa50 mi_syscall_return sys/sys/syscall_mi.h:204 [inline] syscall(ffff80002a3ae240) at syscall+0xa50 sys/arch/amd64/amd64/trap.c:767 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x789607af2ec0, count: -7