uvm_fault(0xffffffff8353da28, 0xffff800018ee2004, 0, 1) -> d kernel: page fault trap, code=0 Stopped at ufs_lookup+0x5e1: movzwl 0x4(%r15,%rbx,1),%r14d TID PID UID PRFLAGS PFLAGS CPU COMMAND *492960 52050 60928 0x10 0x4000000 0K syz-executor ufs_lookup() at ufs_lookup+0x5e1 sys/ufs/ufs/ufs_lookup.c:279 VOP_LOOKUP(fffffd8069e48118,ffff80002a0c4730,ffff80002a0c4760) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80002a0c4700) at vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 namei(ffff80002a0c4700) at namei+0x7aa sys/kern/vfs_lookup.c:250 domknodat(ffff800031385c10,ffffff9c,20000000,2000,0) at domknodat+0xb4 sys/kern/vfs_syscalls.c:1576 syscall(ffff80002a0c4900) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a0c4900) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe41923833f0, 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(0xffffffff8353da28, 0xffff800018ee2004, 0, 1) -> d ddb{0}> trace ufs_lookup() at ufs_lookup+0x5e1 sys/ufs/ufs/ufs_lookup.c:279 VOP_LOOKUP(fffffd8069e48118,ffff80002a0c4730,ffff80002a0c4760) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80002a0c4700) at vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 namei(ffff80002a0c4700) at namei+0x7aa sys/kern/vfs_lookup.c:250 domknodat(ffff800031385c10,ffffff9c,20000000,2000,0) at domknodat+0xb4 sys/kern/vfs_syscalls.c:1576 syscall(ffff80002a0c4900) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a0c4900) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe41923833f0, count: -7 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80002a0c44a0 rbx 0 rdx 0 rcx 0xffffffff rax 0xfffffd80661a7368 r8 0xffffffffffffffff r9 0xfffffd807f7d3068 r10 0xb01e6cfedd114bb r11 0xc41298c5075ee57c r12 0 r13 0xfffffd80618caab0 r14 0 r15 0xffff800018ee2000 rip 0xffffffff8137e6e1 ufs_lookup+0x5e1 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002a0c4390 ss 0x10 ufs_lookup+0x5e1: movzwl 0x4(%r15,%rbx,1),%r14d ddb{0}> show proc PROC (syz-executor) tid=492960 pid=52050 tcnt=4 stat=onproc flags process=10 proc=4000000 runpri=85, usrpri=85, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800031384548,0xffff800031384048 process=0xffff80002ff704a0 user=0xffff80002a0bf000, vmspace=0xfffffd806bfa2c08 estcpu=35, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 35809 513639 12520 0 2 0x2004 syz-executor 15435 324489 12520 0 2 0x1006 syz-executor 20201 384401 84041 0 3 0 futex syz-executor 20201 246497 84041 0 3 0x4000000 futex syz-executor 20201 20374 84041 0 3 0x4000000 futex syz-executor 74499 215355 346 0 3 0 futex syz-executor 74499 452554 346 0 3 0x4000000 futex syz-executor 74499 230783 346 0 3 0x4000080 fsleep syz-executor 52050 218426 44841 60928 3 0x10 futex syz-executor 52050 355596 44841 60928 2 0x4000010 syz-executor *52050 492960 44841 60928 7 0x4000010 syz-executor 52050 502766 44841 60928 3 0x4000090 fsleep syz-executor 37924 69078 28116 0 2 0 syz-executor 37924 418022 28116 0 3 0x4000080 lockf syz-executor 37924 351159 28116 0 3 0x4000080 lockf syz-executor 37924 512465 28116 0 2 0x4000000 syz-executor 37924 155166 28116 0 3 0x4000080 fsleep syz-executor 99717 25187 17116 0 3 0 futex syz-executor 99717 518982 17116 0 2 0x4000000 syz-executor 99717 258720 17116 0 3 0x4000080 fsleep syz-executor 99717 365277 17116 0 3 0x4000080 fsleep syz-executor 44841 282068 12520 0 3 0x82 nanoslp syz-executor 346 111725 12520 0 3 0x82 nanoslp syz-executor 84041 109368 12520 0 3 0x82 nanoslp syz-executor 17116 468512 12520 0 3 0x82 nanoslp syz-executor 28116 371600 12520 0 3 0x82 nanoslp syz-executor 74050 46902 1 0 3 0x100083 ttyopn getty 15216 297975 0 0 3 0x14200 acct acct 5929 382795 0 0 3 0x14280 nfsidl nfsio 26718 475468 0 0 3 0x14280 nfsidl nfsio 57230 326747 0 0 3 0x14280 nfsidl nfsio 85668 442806 0 0 3 0x14280 nfsidl nfsio 56860 82638 0 0 3 0x14280 nfsidl nfsio 68544 467800 0 0 3 0x14280 nfsidl nfsio 56976 178672 0 0 3 0x14280 nfsidl nfsio 22175 224254 0 0 3 0x14280 nfsidl nfsio 8308 354379 0 0 3 0x14280 nfsidl nfsio 59569 465014 0 0 3 0x14280 nfsidl nfsio 82549 403654 0 0 3 0x14280 nfsidl nfsio 38122 481912 0 0 3 0x14280 nfsidl nfsio 13014 182951 0 0 3 0x14280 nfsidl nfsio 10864 419061 0 0 3 0x14280 nfsidl nfsio 59891 459996 0 0 3 0x14280 nfsidl nfsio 86906 286955 0 0 3 0x14280 nfsidl nfsio 91698 259236 0 0 3 0x14280 nfsidl nfsio 59137 495922 0 0 3 0x14280 nfsidl nfsio 7274 333726 0 0 3 0x14280 nfsidl nfsio 30945 183976 0 0 3 0x14280 nfsidl nfsio 41090 151969 0 0 3 0x14200 bored sosplice 12520 146735 89822 0 3 0x82 nanoslp syz-executor 89822 342776 96144 0 3 0x10008a sigsusp ksh 96144 268904 69688 0 3 0x98 kqread sshd-session 69688 312363 35644 0 3 0x92 kqread sshd-session 35644 455752 1 0 3 0x88 kqread sshd 96593 75387 48127 74 3 0x1100092 bpf pflogd 48127 16927 1 0 3 0x80 sbwait pflogd 60105 508252 42854 73 3 0x1100090 kqread syslogd 42854 340540 1 0 3 0x100082 sbwait syslogd 40616 103586 1 0 3 0x100080 kqread resolvd 98847 329882 15837 77 3 0x100092 kqread dhcpleased 2233 504233 15837 77 3 0x100092 kqread dhcpleased 15837 91890 1 0 3 0x80 kqread dhcpleased 69187 20191 0 0 3 0x14200 bored smr 68271 78587 0 0 2 0x14200 zerothread 43088 305448 0 0 3 0x14200 aiodoned aiodoned 70603 98673 0 0 3 0x14200 syncer update 87173 395091 0 0 3 0x14200 cleaner cleaner 14598 515409 0 0 3 0x14200 reaper reaper 30793 519665 0 0 3 0x14200 pgdaemon pagedaemon 98076 231373 0 0 3 0x14200 bored viomb 89561 371926 0 0 3 0x40014200 acpi0 acpi0 25852 72147 0 0 7 0x40014200 idle1 79101 497974 0 0 3 0x14200 bored softnet3 96668 287587 0 0 3 0x14200 bored softnet2 70417 187083 0 0 3 0x14200 bored softnet1 52839 498576 0 0 3 0x14200 bored softnet0 59438 320927 0 0 3 0x14200 bored systqmp 49596 25785 0 0 3 0x14200 bored systq 79612 378610 0 0 3 0x14200 tmoslp softclockmp 18781 382501 0 0 3 0x40014200 tmoslp softclock 23945 74240 0 0 3 0x40014200 idle0 1 98069 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 52050 (syz-executor) thread 0xffff800031384548 (355596) exclusive rwlock fdlock r = 0 (0xfffffd807f7d1a08) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 doopenat+0x173 #2 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #2 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #3 Xsyscall+0x128 Process 52050 (syz-executor) thread 0xffff800031385c10 (492960) exclusive rrwlock inode r = 0 (0xfffffd80618cab48) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #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 domknodat+0xb4 sys/kern/vfs_syscalls.c:1576 #8 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #8 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83628520) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 __mp_acquire_count+0x58 #2 mi_switch+0x658 sys/kern/sched_bsd.c:460 #3 yield+0x6a sys/kern/sched_bsd.c:320 #4 pool_get+0x242 sys/kern/subr_pool.c:589 #5 namei+0xdf sys/kern/vfs_lookup.c:145 #6 domknodat+0xb4 sys/kern/vfs_syscalls.c:1576 #7 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #7 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #8 Xsyscall+0x128 Process 37924 (syz-executor) thread 0xffff800031382a70 (512465) exclusive rrwlock inode r = 0 (0xfffffd80711f32c0) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #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+0x13f sys/kern/vfs_vnops.c:140 #8 sys_ktrace+0x9a sys/kern/kern_ktrace.c:542 #9 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #9 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #10 Xsyscall+0x128 Process 99717 (syz-executor) thread 0xffff800031383c28 (518982) exclusive rwlock futex r = 0 (0xffffffff83492930) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 sys_futex+0x69 sys/kern/sys_futex.c:98 #2 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #2 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #3 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10219 10162K 10484K 166960K 13422 0 pcb 17 15K 16K 166960K 295 0 rtable 152 5K 7K 166960K 3271 0 pf 30 17K 26K 166960K 337 0 ifaddr 30 6K 9K 166960K 450 0 ifgroup 43 2K 2K 166960K 496 0 sysctl 3 1K 1K 166960K 3 0 counters 58 35K 36K 166960K 298 0 ioctlops 0 0K 4K 166960K 1725 0 iov 0 0K 18K 166960K 113 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1445 91K 91K 166960K 3723 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 27 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 69 0 dirhash 15 2K 3K 166960K 42 0 ACPI 1690 195K 286K 166960K 12418 0 file desc 14 43K 97K 166960K 2730 0 sigio 0 0K 0K 166960K 32 0 proc 73 91K 152K 166960K 3207 0 subproc 65 4K 7K 166960K 1301 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 335 0 in_multi 63 4K 7K 166960K 1134 0 ether_multi 1 0K 0K 166960K 2 0 mrt 0 0K 0K 166960K 5 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 235 1049K 1049K 166960K 235 0 exec 2 0K 1K 166960K 1875 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 225 48K 109K 166960K 21499 0 UVM aobj 74 5K 5K 166960K 82 0 pinsyscall 38 76K 104K 166960K 6236 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 94 0 NDP 9 0K 2K 166960K 331 0 temp 63 6823K 6929K 166960K 82684 0 kqueue 13 20K 28K 166960K 224 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 120 297 0 293 1 0 1 1 0 8 0 rtentry 112 1176 0 1110 7 3 4 4 0 8 0 unpcb 144 1428 0 1411 27 26 1 9 0 8 0 syncache 336 11 0 11 8 8 0 1 0 8 0 tcpqe 32 2 0 2 1 1 0 1 0 8 0 tcpcb 808 554 0 548 22 20 2 8 0 8 1 arp 120 213 0 201 1 0 1 1 0 8 0 ipq 40 1 0 1 1 1 0 1 0 8 0 ipqe 40 3 0 3 1 1 0 1 0 8 0 inpcb 336 2181 0 2170 37 33 4 10 0 8 2 nd6 136 312 0 296 1 0 1 1 0 8 0 pkpcb 40 7 0 7 4 3 1 1 0 8 1 kcovpl 48 100 0 95 1 0 1 1 0 8 0 ppxss 1168 16 0 16 7 7 0 1 0 8 0 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 10 0 8 4 3 1 1 0 482 0 pffrnode 88 10 0 8 4 3 1 1 0 8 0 pffrent 40 12 0 10 4 3 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 8 1 0 1 1 0 8 0 pfanchor 1288 17 0 17 3 3 0 1 0 8 0 pftag 88 4 0 0 1 0 1 1 0 8 0 pfstitem 24 209 0 181 1 0 1 1 0 8 0 pfstkey 128 211 0 183 3 1 2 2 0 8 0 pfstate 376 208 0 181 9 5 4 4 0 8 0 pfrule 1344 48 0 28 3 1 2 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 4658 0 4369 44 17 27 29 0 8 1 art_table 32 4660 0 4369 4 0 4 4 0 8 0 art_node 16 1172 0 1113 1 0 1 1 0 8 0 sysvmsgpl 40 21 0 11 2 1 1 1 0 8 0 semapl 112 64 0 54 1 0 1 1 0 8 0 shmpl 112 79 0 8 3 0 3 3 0 8 0 dirhash 1024 37 0 18 3 0 3 3 0 8 0 dino2pl 256 4142 0 2449 107 0 107 107 0 8 0 ffsino 272 4163 0 2470 114 0 114 114 0 8 0 nchpl 144 6126 0 4330 68 0 68 68 0 8 0 uvmvnodes 80 6037 0 0 124 0 124 124 0 8 0 vnodes 216 6037 0 0 336 0 336 336 0 8 0 namei 1024 30829 0 30826 16 15 1 3 0 8 0 percpumem 16 163 0 120 1 0 1 1 0 8 0 kstatmem 264 258 0 240 2 0 2 2 0 8 0 scsiplug 72 4 0 4 4 4 0 1 0 8 0 scxspl 216 47291 0 47291 12 11 1 8 1 8 1 plimitpl 152 577 0 562 1 0 1 1 0 8 0 sigapl 424 2879 0 2811 12 3 9 9 0 8 0 futexpl 64 18692 0 18686 11 10 1 1 0 8 0 knotepl 120 706 0 0 17 0 17 17 0 8 0 kqueuepl 216 594 0 585 13 12 1 5 0 8 0 pipepl 320 596 0 569 3 0 3 3 0 8 0 fdescpl 496 2839 0 2811 11 6 5 6 0 8 0 filepl 152 15840 0 15628 60 43 17 20 0 8 6 lockfpl 104 817 0 811 3 2 1 2 0 8 0 lockfspl 48 241 0 237 1 0 1 1 0 8 0 sessionpl 144 120 0 111 1 0 1 1 0 8 0 pgrppl 48 271 0 255 1 0 1 1 0 8 0 ucredpl 104 2513 0 2499 1 0 1 1 0 8 0 zombiepl 144 2939 0 2939 4 3 1 1 0 8 1 processpl 1160 2879 0 2811 7 1 6 6 0 8 0 procpl 648 4976 0 4894 12 4 8 8 0 8 0 srpgc 96 10 0 10 4 4 0 1 0 8 0 sosppl 168 5 0 5 4 4 0 1 0 8 0 sockpl 664 3997 0 3965 71 64 7 19 0 8 3 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 8 0 0 1 0 1 1 0 8 0 mcl4k 4096 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 264 0 0 30 0 30 30 0 8 0 mtagpl 96 9 0 0 1 0 1 1 0 8 0 mbufpl 256 1220 0 0 66 0 66 66 0 8 0 bufpl 280 10302 0 2618 550 0 550 550 0 8 0 anonpl 24 459992 0 455733 159 118 41 80 0 185 0 amapchunkpl 152 67979 0 67458 89 63 26 42 0 158 1 amappl16 200 9493 0 9471 77 72 5 27 0 8 0 amappl15 192 12 0 12 1 1 0 1 0 8 0 amappl14 184 325 0 313 1 0 1 1 0 8 0 amappl13 176 20 0 20 1 1 0 1 0 8 0 amappl12 168 4954 0 4927 4 2 2 3 0 8 0 amappl11 160 53 0 39 1 0 1 1 0 8 0 amappl10 152 12 0 12 1 1 0 1 0 8 0 amappl9 144 154 0 153 3 2 1 1 0 8 0 amappl8 136 40 0 37 1 0 1 1 0 8 0 amappl7 128 302 0 289 1 0 1 1 0 8 0 amappl6 120 1083 0 1081 1 0 1 1 0 8 0 amappl5 112 508 0 496 1 0 1 1 0 8 0 amappl4 104 610 0 591 1 0 1 1 0 8 0 amappl3 96 12984 0 12882 7 3 4 4 0 8 0 amappl2 88 2023 0 1953 2 0 2 2 0 8 0 amappl1 80 21922 0 21366 15 1 14 15 0 8 0 amappl 88 20311 0 20145 6 1 5 5 0 92 0 dma16384 16384 1 0 1 1 1 0 1 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 2 0 1 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 81 0 8 2 0 2 2 0 8 0 uaddrrnd 24 2839 0 2811 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2839 0 2811 1 0 1 1 0 8 0 vmmpekpl 168 25040 0 24993 3 0 3 3 0 8 0 vmmpepl 168 181456 0 179690 150 63 87 106 0 357 1 vmsppl 440 2838 0 2811 6 2 4 5 0 8 0 rwobjpl 56 59103 0 52096 109 9 100 100 0 8 0 pdppl 4096 5685 0 5622 253 182 71 87 0 8 8 pvpl 32 45537 0 0 368 1 367 367 0 265 0 pmappl 248 2838 0 2811 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 717 0 285 13 0 13 13 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace ufs_lookup() at ufs_lookup+0x5e1 sys/ufs/ufs/ufs_lookup.c:279 VOP_LOOKUP(fffffd8069e48118,ffff80002a0c4730,ffff80002a0c4760) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80002a0c4700) at vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 namei(ffff80002a0c4700) at namei+0x7aa sys/kern/vfs_lookup.c:250 domknodat(ffff800031385c10,ffffff9c,20000000,2000,0) at domknodat+0xb4 sys/kern/vfs_syscalls.c:1576 syscall(ffff80002a0c4900) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a0c4900) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe41923833f0, count: -7 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff800029b7bff0) 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 acpicpu_idle() at acpicpu_idle+0x41e sys/dev/acpi/acpicpu.c:1219 sched_idle(ffff800029b7bff0) at sched_idle+0x558 sys/kern/kern_sched.c:182 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff800029b7bff0) 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 acpicpu_idle() at acpicpu_idle+0x41e sys/dev/acpi/acpicpu.c:1219 sched_idle(ffff800029b7bff0) at sched_idle+0x558 sys/kern/kern_sched.c:182 end trace frame: 0x0, count: -5