uvm_fault(0xfffffd806b3448f0, 0xf, 0, 1) -> e kernel: page fault trap, code=0 Stopped at ktrops+0x58: movq 0x10(%r14),%r14 TID PID UID PRFLAGS PFLAGS CPU COMMAND *244071 92762 0 0 0x4000000 0K syz-executor.2 22005 2413 0 0x2 0 1 syz-executor.5 ktrops(ffff8000ffffc7a8,ffffffffffffffff,0,80001024,fffffd8068862d98,fffffd807f7d33a8) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:718 [inline] ktrops(ffff8000ffffc7a8,ffffffffffffffff,0,80001024,fffffd8068862d98,fffffd807f7d33a8) at ktrops+0x58 sys/kern/kern_ktrace.c:561 doktrace(fffffd8068862d98,4,1024,0,ffff8000ffffc7a8) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:586 [inline] doktrace(fffffd8068862d98,4,1024,0,ffff8000ffffc7a8) at doktrace+0x6dd sys/kern/kern_ktrace.c:508 sys_ktrace(ffff8000ffffc7a8,ffff80002a1e04a0,ffff80002a1e03f0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:549 syscall(ffff80002a1e04a0) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff80002a1e04a0) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x24365920510, count: 10 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(0xfffffd806b3448f0, 0xf, 0, 1) -> e ddb{0}> trace ktrops(ffff8000ffffc7a8,ffffffffffffffff,0,80001024,fffffd8068862d98,fffffd807f7d33a8) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:718 [inline] ktrops(ffff8000ffffc7a8,ffffffffffffffff,0,80001024,fffffd8068862d98,fffffd807f7d33a8) at ktrops+0x58 sys/kern/kern_ktrace.c:561 doktrace(fffffd8068862d98,4,1024,0,ffff8000ffffc7a8) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:586 [inline] doktrace(fffffd8068862d98,4,1024,0,ffff8000ffffc7a8) at doktrace+0x6dd sys/kern/kern_ktrace.c:508 sys_ktrace(ffff8000ffffc7a8,ffff80002a1e04a0,ffff80002a1e03f0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:549 syscall(ffff80002a1e04a0) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff80002a1e04a0) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x24365920510, count: -5 ddb{0}> show registers rdi 0xffff8000ffffc7a8 rsi 0xffffffffffffffff rbp 0xffff80002a1e01c0 rbx 0xfffffd807f7d33a8 rdx 0 rcx 0x80001024 __kernel_virt_to_phys+0x1024 rax 0x1 r8 0xfffffd8068862d98 r9 0xfffffd807f7d33a8 r10 0xb343c5960591e2fa r11 0xdbed2ce0a05157 r12 0xffff8000ffffc7a8 r13 0xffffffffffffffff r14 0xffffffffffffffff r15 0x80001024 __kernel_virt_to_phys+0x1024 rip 0xffffffff81303028 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002a1e0140 ss 0 ktrops+0x58: movq 0x10(%r14),%r14 ddb{0}> show proc PROC (syz-executor.2) tid=244071 pid=92762 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=0xffff8000ffff27c8,0xffff8000ffff3480 process=0xffff8000ffff5b50 user=0xffff80002a1db000, vmspace=0xfffffd806b3448f0 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 13335 455524 38887 0 2 0 syz-executor.7 13335 320196 38887 0 2 0x4000000 syz-executor.7 92762 91787 85006 0 2 0 syz-executor.2 *92762 244071 85006 0 7 0x4000000 syz-executor.2 2413 22005 92134 0 7 0x2 syz-executor.5 85006 337985 92134 0 3 0x82 nanoslp syz-executor.2 66465 233597 92134 0 2 0x2 syz-executor.3 38887 11557 92134 0 3 0x82 nanoslp syz-executor.7 5464 460350 92134 0 3 0x82 nanoslp syz-executor.4 86379 268426 92134 0 2 0x2 syz-executor.6 73176 152573 92134 0 2 0x2 syz-executor.0 64168 92364 92134 0 3 0x82 nanoslp syz-executor.1 92134 478105 72754 0 3 0x82 thrsleep syz-execprog 92134 385704 72754 0 3 0x4000082 nanoslp syz-execprog 92134 113715 72754 0 3 0x4000082 wait syz-execprog 92134 493804 72754 0 3 0x4000082 wait syz-execprog 92134 254955 72754 0 3 0x4000082 thrsleep syz-execprog 92134 374496 72754 0 3 0x4000082 wait syz-execprog 92134 232523 72754 0 3 0x4000082 wait syz-execprog 92134 17072 72754 0 2 0x4000002 syz-execprog 92134 263114 72754 0 3 0x4000082 wait syz-execprog 92134 298084 72754 0 3 0x4000082 wait syz-execprog 92134 475617 72754 0 3 0x4000082 thrsleep syz-execprog 92134 199855 72754 0 3 0x4000082 wait syz-execprog 92134 421324 72754 0 3 0x4000082 wait syz-execprog 92134 29493 72754 0 2 0x4000002 syz-execprog 92134 173526 72754 0 3 0x4000082 thrsleep syz-execprog 72754 240881 1408 0 3 0x10008a sigsusp ksh 1408 226868 22855 0 3 0x98 kqread sshd-session 22855 155860 15783 0 3 0x92 kqread sshd-session 26717 38275 1 0 3 0x100083 ttyin getty 15783 121507 1 0 3 0x88 kqread sshd 71330 30251 48935 74 3 0x1100092 bpf pflogd 48935 210315 1 0 3 0x80 sbwait pflogd 99466 47939 70873 73 3 0x1100090 kqread syslogd 70873 329025 1 0 3 0x100082 sbwait syslogd 34007 161000 1 0 3 0x100080 kqread resolvd 55893 450676 83418 77 3 0x100092 kqread dhcpleased 44569 512599 83418 77 3 0x100092 kqread dhcpleased 83418 321064 1 0 3 0x80 kqread dhcpleased 37816 120697 0 0 3 0x14200 bored smr 91928 334903 0 0 3 0x14200 pgzero zerothread 81431 84342 0 0 3 0x14200 aiodoned aiodoned 47097 438488 0 0 3 0x14200 syncer update 34365 72375 0 0 3 0x14200 cleaner cleaner 20757 499390 0 0 3 0x14200 reaper reaper 96485 292383 0 0 3 0x14200 pgdaemon pagedaemon 56692 290573 0 0 3 0x14200 bored viomb 62237 210134 0 0 3 0x40014200 acpi0 acpi0 45594 379106 0 0 3 0x40014200 idle1 39554 416028 0 0 3 0x14200 bored softnet3 48140 305842 0 0 3 0x14200 bored softnet2 17864 310939 0 0 3 0x14200 bored softnet1 22771 123960 0 0 3 0x14200 bored softnet0 22442 173246 0 0 3 0x14200 bored systqmp 34770 23469 0 0 3 0x14200 bored systq 86935 83241 0 0 3 0x14200 tmoslp softclockmp 16332 52518 0 0 3 0x40014200 tmoslp softclock 77491 138467 0 0 3 0x40014200 idle0 1 438343 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 13335 (syz-executor.7) thread 0xffff8000ffff36f8 (320196) exclusive rrwlock inode r = 0 (0xfffffd806b27a3c8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:159 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1230 #6 ffs_inode_alloc+0x283 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_makeinode+0xcb sys/ufs/ufs/ufs_vnops.c:1732 #8 ufs_create+0x4e sys/ufs/ufs/ufs_vnops.c:147 #9 VOP_CREATE+0xff sys/kern/vfs_vops.c:103 #10 vn_open+0x491 sys/kern/vfs_vnops.c:116 #11 doopenat+0x31d sys/kern/vfs_syscalls.c:1123 #12 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] #12 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #13 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806ac7a5f8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 vn_open+0x1f4 sys/kern/vfs_vnops.c:107 #8 doopenat+0x31d sys/kern/vfs_syscalls.c:1123 #9 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] #9 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #10 Xsyscall+0x128 Process 92762 (syz-executor.2) thread 0xffff8000ffffc7a8 (244071) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff835a1518) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 __mp_acquire_count+0x58 #2 mi_switch+0x4b7 sys/kern/sched_bsd.c:441 #3 sleep_finish+0x2f2 sys/kern/kern_synch.c:423 #4 getblk+0x197 sys/kern/vfs_bio.c:1017 #5 bread+0x47 bio_doread sys/kern/vfs_bio.c:422 [inline] #5 bread+0x47 sys/kern/vfs_bio.c:467 #6 ffs_update+0x198 sys/ufs/ffs/ffs_inode.c:91 #7 ufs_inactive+0x2e2 sys/ufs/ufs/ufs_inode.c:95 #8 VOP_INACTIVE+0x107 sys/kern/vfs_vops.c:495 #9 vrele+0x129 sys/kern/vfs_subr.c:829 #10 ktrsettrace+0xe7 sys/kern/kern_ktrace.c:122 #11 ktrops+0x271 sys/kern/kern_ktrace.c:564 #12 doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:586 [inline] #12 doktrace+0x6dd sys/kern/kern_ktrace.c:508 #13 sys_ktrace+0x11c sys/kern/kern_ktrace.c:549 #14 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] #14 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #15 Xsyscall+0x128 Process 73176 (syz-executor.0) thread 0xffff80002a04e2b0 (152573) exclusive rrwlock inode r = 0 (0xfffffd806b27af78) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:159 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1230 #6 ffs_inode_alloc+0x283 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0x113 sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x102 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3099 #10 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] #10 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806c2df1b0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3084 #8 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] #8 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10183 11113K 11113K 166960K 11264 0 pcb 17 12K 12K 166960K 17 0 rtable 234 6K 6K 166960K 378 0 pf 34 17K 18K 166960K 48 0 ifaddr 43 7K 7K 166960K 49 0 ifgroup 55 2K 2K 166960K 60 0 counters 64 36K 36K 166960K 66 0 ioctlops 0 0K 4K 166960K 1484 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1262 79K 80K 166960K 1281 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 1K 166960K 2 0 VM map 2 1K 1K 166960K 2 0 sem 2 0K 0K 166960K 2 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 12 41K 89K 166960K 185 0 proc 69 91K 128K 166960K 556 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 in_multi 99 7K 7K 166960K 110 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 424 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 249 75K 76K 166960K 4608 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 39 78K 112K 166960K 1560 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 28 2K 2K 166960K 31 0 temp 1 6868K 6933K 166960K 5028 0 kqueue 13 20K 20K 166960K 46 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 35 0 32 1 0 1 1 0 8 0 rtentry 112 122 0 12 4 0 4 4 0 8 0 unpcb 144 139 0 122 1 0 1 1 0 8 0 syncache 336 9 0 9 2 1 1 1 0 8 1 tcpcb 808 12 0 9 1 0 1 1 0 8 0 arp 120 20 0 2 1 0 1 1 0 8 0 inpcb 336 73 0 67 1 0 1 1 0 8 0 nd6 136 27 0 3 2 1 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 24 0 4 1 0 1 1 0 8 0 pfstkey 128 24 0 4 1 0 1 1 0 8 0 pfstate 376 24 0 4 2 0 2 2 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 256 500 0 48 32 3 29 29 0 8 0 art_table 32 501 0 48 5 1 4 4 0 8 0 art_node 16 121 0 21 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1681 0 138 97 0 97 97 0 8 0 ffsino 272 1681 0 138 103 0 103 103 0 8 0 nchpl 144 2031 0 241 67 0 67 67 0 8 0 uvmvnodes 80 1695 0 0 35 0 35 35 0 8 0 vnodes 216 1695 0 0 95 0 95 95 0 8 0 namei 1024 8065 0 8063 5 3 2 3 0 8 1 percpumem 16 47 0 1 1 0 1 1 0 8 0 kstatmem 264 26 0 2 2 0 2 2 0 8 0 scxspl 216 8911 0 8911 10 9 1 8 1 8 1 plimitpl 152 59 0 42 1 0 1 1 0 8 0 sigapl 424 543 0 496 8 1 7 7 0 8 1 futexpl 64 159 0 159 2 1 1 1 0 8 1 knotepl 120 115 0 0 4 0 4 4 0 8 0 kqueuepl 216 42 0 33 1 0 1 1 0 8 0 pipepl 320 187 0 159 5 2 3 3 0 8 0 fdescpl 496 525 0 498 6 1 5 5 0 8 1 filepl 152 2362 0 2223 7 1 6 6 0 8 0 lockfpl 104 6 0 4 1 0 1 1 0 8 0 lockfspl 48 4 0 2 1 0 1 1 0 8 0 sessionpl 144 35 0 18 1 0 1 1 0 8 0 pgrppl 48 35 0 18 1 0 1 1 0 8 0 ucredpl 104 116 0 103 1 0 1 1 0 8 0 zombiepl 144 499 0 496 2 1 1 1 0 8 0 processpl 1160 543 0 496 6 1 5 5 0 8 1 procpl 648 604 0 541 7 1 6 6 0 8 0 sockpl 664 247 0 221 4 1 3 3 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 207 0 0 23 0 23 23 0 8 0 mcl2k 2048 20 0 0 3 0 3 3 0 8 0 mtagpl 96 1 0 0 1 0 1 1 0 8 0 mbufpl 256 210 0 0 12 0 12 12 0 8 0 bufpl 280 4424 0 158 305 0 305 305 0 8 0 anonpl 24 303753 0 299515 65 15 50 55 0 185 21 amapchunkpl 152 16710 0 16166 41 15 26 28 0 158 3 amappl16 200 8467 0 8401 9 5 4 5 0 8 0 amappl15 192 13 0 13 2 2 0 1 0 8 0 amappl14 184 230 0 215 3 1 2 2 0 8 1 amappl13 176 41 0 40 2 1 1 1 0 8 0 amappl12 168 1267 0 1239 4 2 2 2 0 8 0 amappl11 160 58 0 44 1 0 1 1 0 8 0 amappl10 152 92 0 82 2 1 1 1 0 8 0 amappl9 144 445 0 445 3 2 1 1 0 8 1 amappl8 136 183 0 153 2 0 2 2 0 8 0 amappl7 128 223 0 202 3 1 2 2 0 8 0 amappl6 120 349 0 344 3 1 2 2 0 8 1 amappl5 112 218 0 206 1 0 1 1 0 8 0 amappl4 104 519 0 498 3 1 2 2 0 8 1 amappl3 96 4060 0 3987 4 1 3 3 0 8 0 amappl2 88 1290 0 1209 6 2 4 4 0 8 1 amappl1 80 14980 0 14405 35 13 22 23 0 8 8 amappl 88 3844 0 3685 8 3 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 128 253 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 525 0 498 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 525 0 498 1 0 1 1 0 8 0 vmmpekpl 168 11501 0 11456 3 0 3 3 0 8 0 vmmpepl 168 68530 0 66792 133 13 120 123 0 357 38 vmsppl 448 524 0 498 8 3 5 5 0 8 1 rwobjpl 56 30800 0 28112 59 12 47 48 0 8 2 pdppl 4096 1057 0 996 131 48 83 83 0 8 22 pvpl 32 49660 0 0 402 1 401 401 0 265 0 pmappl 248 524 0 498 3 0 3 3 0 8 1 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 426 0 60 12 1 11 11 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace ktrops(ffff8000ffffc7a8,ffffffffffffffff,0,80001024,fffffd8068862d98,fffffd807f7d33a8) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:718 [inline] ktrops(ffff8000ffffc7a8,ffffffffffffffff,0,80001024,fffffd8068862d98,fffffd807f7d33a8) at ktrops+0x58 sys/kern/kern_ktrace.c:561 doktrace(fffffd8068862d98,4,1024,0,ffff8000ffffc7a8) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:586 [inline] doktrace(fffffd8068862d98,4,1024,0,ffff8000ffffc7a8) at doktrace+0x6dd sys/kern/kern_ktrace.c:508 sys_ktrace(ffff8000ffffc7a8,ffff80002a1e04a0,ffff80002a1e03f0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:549 syscall(ffff80002a1e04a0) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff80002a1e04a0) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x24365920510, count: -5 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff800029b5bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 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(ffffffff835a1310) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835a1310) at __mp_lock+0x192 sys/kern/kern_lock.c:144 syscall(ffff80002a1ce020) at syscall+0xa11 mi_syscall_return sys/sys/syscall_mi.h:206 [inline] syscall(ffff80002a1ce020) at syscall+0xa11 sys/arch/amd64/amd64/trap.c:598 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x702df2441d80, count: 9 ddb{1}> trace x86_ipi_db(ffff800029b5bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 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(ffffffff835a1310) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835a1310) at __mp_lock+0x192 sys/kern/kern_lock.c:144 syscall(ffff80002a1ce020) at syscall+0xa11 mi_syscall_return sys/sys/syscall_mi.h:206 [inline] syscall(ffff80002a1ce020) at syscall+0xa11 sys/arch/amd64/amd64/trap.c:598 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x702df2441d80, count: -6