uvm_fault(0xffffffff83508d40, 0xffff800027c22004, 0, 1) -> d kernel: page fault trap, code=0 Stopped at ffs_freefile+0x121: movl 0x4(%rbx),%r13d TID PID UID PRFLAGS PFLAGS CPU COMMAND 371598 19749 0 0 0 0 syz-executor *502473 39943 0 0 0x4000000 1K syz-executor ffs_freefile(fffffd806ba17448,cac0,8000) at ffs_freefile+0x121 ffs_cgread sys/ufs/ffs/ffs_alloc.c:856 [inline] ffs_freefile(fffffd806ba17448,cac0,8000) at ffs_freefile+0x121 sys/ufs/ffs/ffs_alloc.c:1377 ffs_inode_free(fffffd806ba17448,cac0,8000) at ffs_inode_free+0x44 sys/ufs/ffs/ffs_alloc.c:1355 ufs_inactive(ffff800033dafd08) at ufs_inactive+0x29d sys/ufs/ufs/ufs_inode.c:94 VOP_INACTIVE(fffffd806b3b4ea8,ffff8000359b0f68) at VOP_INACTIVE+0x107 sys/kern/vfs_vops.c:495 vput(fffffd806b3b4ea8) at vput+0xe5 sys/kern/vfs_subr.c:779 ufs_makeinode(8000,fffffd806b3b4c20,ffff800033db01f8,ffff800033db0228) at ufs_makeinode+0x2d3 sys/ufs/ufs/ufs_vnops.c:1785 ufs_create(ffff800033daff70) at ufs_create+0x4e sys/ufs/ufs/ufs_vnops.c:147 VOP_CREATE(fffffd806b3b4c20,ffff800033db01f8,ffff800033db0228,ffff800033dafff8) at VOP_CREATE+0xff sys/kern/vfs_vops.c:103 vn_open(ffff800033db01c8,201,0) at vn_open+0x491 sys/kern/vfs_vnops.c:116 doopenat(ffff8000359b0f68,ffffff9c,20000040,200,0,ffff800033db0370) at doopenat+0x31d sys/kern/vfs_syscalls.c:1123 syscall(ffff800033db0420) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff800033db0420) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7aed53b2590, 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: uvm_fault(0xffffffff83508d40, 0xffff800027c22004, 0, 1) -> d ddb{1}> trace ffs_freefile(fffffd806ba17448,cac0,8000) at ffs_freefile+0x121 ffs_cgread sys/ufs/ffs/ffs_alloc.c:856 [inline] ffs_freefile(fffffd806ba17448,cac0,8000) at ffs_freefile+0x121 sys/ufs/ffs/ffs_alloc.c:1377 ffs_inode_free(fffffd806ba17448,cac0,8000) at ffs_inode_free+0x44 sys/ufs/ffs/ffs_alloc.c:1355 ufs_inactive(ffff800033dafd08) at ufs_inactive+0x29d sys/ufs/ufs/ufs_inode.c:94 VOP_INACTIVE(fffffd806b3b4ea8,ffff8000359b0f68) at VOP_INACTIVE+0x107 sys/kern/vfs_vops.c:495 vput(fffffd806b3b4ea8) at vput+0xe5 sys/kern/vfs_subr.c:779 ufs_makeinode(8000,fffffd806b3b4c20,ffff800033db01f8,ffff800033db0228) at ufs_makeinode+0x2d3 sys/ufs/ufs/ufs_vnops.c:1785 ufs_create(ffff800033daff70) at ufs_create+0x4e sys/ufs/ufs/ufs_vnops.c:147 VOP_CREATE(fffffd806b3b4c20,ffff800033db01f8,ffff800033db0228,ffff800033dafff8) at VOP_CREATE+0xff sys/kern/vfs_vops.c:103 vn_open(ffff800033db01c8,201,0) at vn_open+0x491 sys/kern/vfs_vnops.c:116 doopenat(ffff8000359b0f68,ffffff9c,20000040,200,0,ffff800033db0370) at doopenat+0x31d sys/kern/vfs_syscalls.c:1123 syscall(ffff800033db0420) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff800033db0420) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7aed53b2590, count: -12 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff800033dafc40 rbx 0xffff800027c22000 rdx 0xffff800001221f40 rcx 0xffff8000359b0f68 rax 0xfffffd80769d08c0 r8 0xffffffffffffffff r9 0x32a00 acpi_pdirpa+0x1e871 r10 0xa93830bc905a73c4 r11 0x65fe1056188fad44 r12 0x2 r13 0 r14 0xffff800000a5f000 r15 0xcac0 __ALIGN_SIZE+0xbac0 rip 0xffffffff81d0f011 ffs_freefile+0x121 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800033dafba0 ss 0 ffs_freefile+0x121: movl 0x4(%rbx),%r13d ddb{1}> show proc PROC (syz-executor) tid=502473 pid=39943 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=0xffff8000359b0a58,0xffff8000359b1488 process=0xffff8000ffffb670 user=0xffff800033dab000, vmspace=0xfffffd806aab46e8 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 19749 371598 21320 0 7 0 syz-executor 19749 488365 21320 0 2 0x4000000 syz-executor 39943 168782 64474 0 2 0 syz-executor *39943 502473 64474 0 7 0x4000000 syz-executor 71988 184217 32049 0 2 0 syz-executor 71988 337291 32049 0 3 0x4000080 fsleep syz-executor 64752 428289 20921 0 2 0x100002 sh 35454 458441 36652 0 2 0x10 syz-executor 35454 207339 36652 0 3 0x4000090 fifor syz-executor 41251 391076 95095 0 2 0x100000 sh 80157 142489 34561 0 2 0 syz-executor 80157 109953 34561 0 3 0x4000080 fsleep syz-executor 95095 143360 45150 0 3 0x10008a sigsusp sh 41307 1468 16444 0 2 0 syz-executor 41307 2253 16444 0 3 0x4000080 fsleep syz-executor 32049 275483 57628 0 3 0x82 nanoslp syz-executor 21320 104582 57628 0 3 0x82 nanoslp syz-executor 45150 27071 57628 0 3 0x82 wait syz-executor 20921 451953 57628 0 3 0x82 wait syz-executor 64474 171831 57628 0 3 0x82 nanoslp syz-executor 36652 439201 57628 0 3 0x82 nanoslp syz-executor 34561 520855 57628 0 3 0x82 nanoslp syz-executor 16444 238897 57628 0 3 0x82 nanoslp syz-executor 70770 401822 1 0 3 0x100083 ttyin getty 87752 77276 0 0 3 0x14200 bored sosplice 57628 519047 45239 0 3 0x82 kqread syz-executor 45239 522090 35847 0 3 0x10008a sigsusp ksh 35847 185481 27522 0 3 0x98 kqread sshd-session 27522 436827 64314 0 3 0x92 kqread sshd-session 64314 48387 1 0 3 0x88 kqread sshd 84214 30733 62150 74 3 0x1100092 bpf pflogd 62150 236952 1 0 3 0x80 sbwait pflogd 35345 471933 87791 73 2 0x1100010 syslogd 87791 322807 1 0 3 0x100082 sbwait syslogd 91075 422338 1 0 3 0x100080 kqread resolvd 65587 399383 4452 77 3 0x100092 kqread dhcpleased 58425 79500 4452 77 3 0x100092 kqread dhcpleased 4452 381975 1 0 3 0x80 kqread dhcpleased 66535 450649 0 0 2 0x40014200 smr 50637 489666 0 0 2 0x14200 zerothread 43952 289148 0 0 3 0x14200 aiodoned aiodoned 45902 233427 0 0 3 0x14200 syncer update 71502 410657 0 0 3 0x14200 cleaner cleaner 32709 347312 0 0 3 0x14200 reaper reaper 1390 262620 0 0 3 0x14200 pgdaemon pagedaemon 27612 424393 0 0 3 0x14200 bored viomb 50817 147101 0 0 3 0x40014200 acpi0 acpi0 22824 336781 0 0 3 0x40014200 idle1 82076 136764 0 0 3 0x14200 bored softnet3 36764 392454 0 0 3 0x14200 bored softnet2 68754 404336 0 0 3 0x14200 bored softnet1 97794 272818 0 0 3 0x14200 bored softnet0 93151 162149 0 0 3 0x14200 bored systqmp 94516 25025 0 0 3 0x14200 bored systq 14056 429806 0 0 3 0x14200 tmoslp softclockmp 81303 465875 0 0 3 0x40014200 tmoslp softclock 30948 524249 0 0 3 0x40014200 idle0 1 246663 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 39943 (syz-executor) thread 0xffff8000359b0f68 (502473) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83507c70) #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 sleep_finish+0x219 sys/kern/kern_synch.c:416 #4 biowait+0xc1 sys/kern/vfs_bio.c:1254 #5 ffs_vget+0x283 sys/ufs/ffs/ffs_vfsops.c:1247 #6 ffs_inode_alloc+0x283 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_makeinode+0xcb sys/ufs/ufs/ufs_vnops.c:1728 #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:179 [inline] #12 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #13 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806ba174e0) #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 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:169 #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:1728 #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:179 [inline] #12 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #13 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806ba17f80) #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+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:179 [inline] #9 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #10 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10223 10174K 10546K 166960K 12059 0 pcb 17 13K 14K 166960K 135 0 rtable 188 8K 10K 166960K 1006 0 pf 37 18K 25K 166960K 129 0 ifaddr 37 6K 7K 166960K 138 0 ifgroup 55 2K 2K 166960K 162 0 sysctl 3 1K 1K 166960K 3 0 counters 64 36K 36K 166960K 118 0 ioctlops 0 0K 4K 166960K 1549 0 iov 0 0K 12K 166960K 24 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1441 91K 91K 166960K 2159 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 11 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 21 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1690 195K 286K 166960K 12418 0 file desc 19 69K 93K 166960K 953 0 sigio 0 0K 0K 166960K 42 0 proc 72 91K 152K 166960K 1188 0 subproc 104 6K 7K 166960K 390 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 71 0 in_multi 75 5K 7K 166960K 341 0 ether_multi 1 0K 0K 166960K 9 0 mrt 1 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 211 943K 943K 166960K 211 0 exec 0 0K 1K 166960K 813 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 238 73K 91K 166960K 9188 0 UVM aobj 14 2K 4K 166960K 16 0 pinsyscall 44 88K 110K 166960K 2575 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 30 0 NDP 20 1K 1K 166960K 96 0 temp 57 6819K 6883K 166960K 21473 0 kqueue 13 20K 30K 166960K 117 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> 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 120 106 0 103 1 0 1 1 0 8 0 rtentry 112 337 0 258 3 0 3 3 0 8 0 unpcb 144 413 0 393 6 5 1 4 0 8 0 syncache 336 4 0 4 1 1 0 1 0 8 0 tcpcb 808 242 0 238 5 4 1 4 0 8 0 arp 120 60 0 44 1 0 1 1 0 8 0 inpcb 336 780 0 769 11 9 2 7 0 8 1 nd6 136 86 0 68 1 0 1 1 0 8 0 pkpcb 40 3 0 3 3 3 0 1 0 8 0 kcovpl 48 30 0 22 1 0 1 1 0 8 0 ppxss 1168 2 0 2 1 1 0 1 0 8 0 pfstscr 40 2 0 2 2 2 0 1 0 8 0 pffrag 232 2 0 0 1 0 1 1 0 482 0 pffrnode 88 2 0 0 1 0 1 1 0 8 0 pffrent 40 5 0 3 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 11 0 5 1 0 1 1 0 8 0 pfanchor 1288 1 0 0 1 0 1 1 0 8 0 pftag 88 2 0 2 1 1 0 1 0 8 0 pfstitem 24 82 0 38 1 0 1 1 0 8 0 pfstkey 128 89 0 43 2 0 2 2 0 8 0 pfstate 376 84 0 41 6 0 6 6 0 8 0 pfrule 1344 29 0 19 2 0 2 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 1311 0 986 26 1 25 26 0 8 4 art_table 32 1313 0 986 4 0 4 4 0 8 0 art_node 16 336 0 265 1 0 1 1 0 8 0 sysvmsgpl 40 11 0 8 2 1 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 16 0 6 1 0 1 1 0 8 0 shmpl 112 13 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2536 0 990 97 0 97 97 0 8 0 ffsino 272 2536 0 990 104 0 104 104 0 8 0 nchpl 144 3485 0 1767 64 0 64 64 0 8 0 uvmvnodes 80 3241 0 0 67 0 67 67 0 8 0 vnodes 216 3241 0 0 181 0 181 181 0 8 0 namei 1024 13452 0 13452 2 1 1 1 0 8 1 percpumem 16 73 0 27 1 0 1 1 0 8 0 pfiaddrpl 120 4 0 0 1 0 1 1 0 8 0 kstatmem 264 78 0 54 2 0 2 2 0 8 0 scsiplug 72 3 0 3 2 2 0 1 0 8 0 scxspl 216 19944 0 19944 10 9 1 8 1 8 1 plimitpl 152 157 0 140 1 0 1 1 0 8 0 sigapl 424 1213 0 1161 8 1 7 7 0 8 0 futexpl 64 7697 0 7694 3 2 1 1 0 8 0 knotepl 120 341 0 0 10 0 10 10 0 8 0 kqueuepl 216 336 0 326 11 8 3 7 0 8 2 pipepl 320 222 0 195 3 0 3 3 0 8 0 fdescpl 496 1192 0 1159 5 0 5 5 0 8 0 filepl 152 6070 0 5819 22 9 13 17 0 8 2 lockfpl 104 244 0 242 1 0 1 1 0 8 0 lockfspl 48 98 0 96 1 0 1 1 0 8 0 sessionpl 144 47 0 38 1 0 1 1 0 8 0 pgrppl 48 87 0 70 1 0 1 1 0 8 0 ucredpl 104 965 0 950 1 0 1 1 0 8 0 zombiepl 144 1161 0 1161 1 0 1 1 0 8 1 processpl 1160 1213 0 1161 5 0 5 5 0 8 1 procpl 648 2082 0 2024 8 2 6 6 0 8 0 sosppl 168 6 0 6 2 2 0 1 0 8 0 sockpl 664 1370 0 1336 16 11 5 9 0 8 2 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 227 0 0 29 0 29 29 0 8 0 mtagpl 96 12 0 0 1 0 1 1 0 8 0 mbufpl 256 309 0 0 19 0 19 19 0 8 0 bufpl 280 6472 0 298 442 0 442 442 0 8 0 anonpl 24 202623 0 197442 65 3 62 63 0 185 23 amapchunkpl 152 29962 0 29401 38 3 35 35 0 158 13 amappl16 200 3593 0 3548 9 3 6 6 0 8 0 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 185 0 173 1 0 1 1 0 8 0 amappl13 176 8 0 8 1 1 0 1 0 8 0 amappl12 168 2170 0 2134 4 2 2 3 0 8 0 amappl11 160 52 0 38 1 0 1 1 0 8 0 amappl10 152 32 0 31 1 0 1 1 0 8 0 amappl9 144 127 0 127 1 1 0 1 0 8 0 amappl8 136 22 0 19 1 0 1 1 0 8 0 amappl7 128 153 0 141 1 0 1 1 0 8 0 amappl6 120 404 0 401 1 0 1 1 0 8 0 amappl5 112 234 0 223 1 0 1 1 0 8 0 amappl4 104 405 0 386 1 0 1 1 0 8 0 amappl3 96 5854 0 5745 5 1 4 4 0 8 0 amappl2 88 967 0 897 2 0 2 2 0 8 0 amappl1 80 11495 0 10924 15 1 14 15 0 8 0 amappl 88 8603 0 8427 5 0 5 5 0 92 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma2048 2048 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 8 0 8 2 2 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 15 0 2 1 0 1 1 0 8 0 uaddrrnd 24 1192 0 1159 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1192 0 1159 1 0 1 1 0 8 0 vmmpekpl 168 11019 0 10978 3 0 3 3 0 8 0 vmmpepl 168 79156 0 77274 95 7 88 90 0 357 2 vmsppl 440 1191 0 1159 6 1 5 5 0 8 1 rwobjpl 56 27301 0 23089 63 2 61 61 0 8 0 pdppl 4096 2391 0 2318 121 42 79 85 0 8 6 pvpl 32 29944 0 0 243 1 242 242 0 265 0 pmappl 248 1191 0 1159 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 430 0 63 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff834aaff0) 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 end of kernel end trace frame: 0x72a9c277fa90, count: 12 ddb{0}> trace x86_ipi_db(ffffffff834aaff0) 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 end of kernel end trace frame: 0x72a9c277fa90, count: -3 ddb{0}> machine ddbcpu 1 Stopped at ffs_freefile+0x121: movl 0x4(%rbx),%r13d ffs_freefile(fffffd806ba17448,cac0,8000) at ffs_freefile+0x121 ffs_cgread sys/ufs/ffs/ffs_alloc.c:856 [inline] ffs_freefile(fffffd806ba17448,cac0,8000) at ffs_freefile+0x121 sys/ufs/ffs/ffs_alloc.c:1377 ffs_inode_free(fffffd806ba17448,cac0,8000) at ffs_inode_free+0x44 sys/ufs/ffs/ffs_alloc.c:1355 ufs_inactive(ffff800033dafd08) at ufs_inactive+0x29d sys/ufs/ufs/ufs_inode.c:94 VOP_INACTIVE(fffffd806b3b4ea8,ffff8000359b0f68) at VOP_INACTIVE+0x107 sys/kern/vfs_vops.c:495 vput(fffffd806b3b4ea8) at vput+0xe5 sys/kern/vfs_subr.c:779 ufs_makeinode(8000,fffffd806b3b4c20,ffff800033db01f8,ffff800033db0228) at ufs_makeinode+0x2d3 sys/ufs/ufs/ufs_vnops.c:1785 ufs_create(ffff800033daff70) at ufs_create+0x4e sys/ufs/ufs/ufs_vnops.c:147 VOP_CREATE(fffffd806b3b4c20,ffff800033db01f8,ffff800033db0228,ffff800033dafff8) at VOP_CREATE+0xff sys/kern/vfs_vops.c:103 vn_open(ffff800033db01c8,201,0) at vn_open+0x491 sys/kern/vfs_vnops.c:116 doopenat(ffff8000359b0f68,ffffff9c,20000040,200,0,ffff800033db0370) at doopenat+0x31d sys/kern/vfs_syscalls.c:1123 syscall(ffff800033db0420) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff800033db0420) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7aed53b2590, count: 3 ddb{1}> trace ffs_freefile(fffffd806ba17448,cac0,8000) at ffs_freefile+0x121 ffs_cgread sys/ufs/ffs/ffs_alloc.c:856 [inline] ffs_freefile(fffffd806ba17448,cac0,8000) at ffs_freefile+0x121 sys/ufs/ffs/ffs_alloc.c:1377 ffs_inode_free(fffffd806ba17448,cac0,8000) at ffs_inode_free+0x44 sys/ufs/ffs/ffs_alloc.c:1355 ufs_inactive(ffff800033dafd08) at ufs_inactive+0x29d sys/ufs/ufs/ufs_inode.c:94 VOP_INACTIVE(fffffd806b3b4ea8,ffff8000359b0f68) at VOP_INACTIVE+0x107 sys/kern/vfs_vops.c:495 vput(fffffd806b3b4ea8) at vput+0xe5 sys/kern/vfs_subr.c:779 ufs_makeinode(8000,fffffd806b3b4c20,ffff800033db01f8,ffff800033db0228) at ufs_makeinode+0x2d3 sys/ufs/ufs/ufs_vnops.c:1785 ufs_create(ffff800033daff70) at ufs_create+0x4e sys/ufs/ufs/ufs_vnops.c:147 VOP_CREATE(fffffd806b3b4c20,ffff800033db01f8,ffff800033db0228,ffff800033dafff8) at VOP_CREATE+0xff sys/kern/vfs_vops.c:103 vn_open(ffff800033db01c8,201,0) at vn_open+0x491 sys/kern/vfs_vnops.c:116 doopenat(ffff8000359b0f68,ffffff9c,20000040,200,0,ffff800033db0370) at doopenat+0x31d sys/kern/vfs_syscalls.c:1123 syscall(ffff800033db0420) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff800033db0420) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7aed53b2590, count: -12