uvm_fault(0xffffffff838fce98, 0xffff8000297c2004, 0, 1) -> d kernel: page fault trap, code=0 Stopped at ufs_lookup+0x623: movzwl 0x4(%r15,%r14,1),%ebx TID PID UID PRFLAGS PFLAGS CPU COMMAND 174787 11314 0 0 0 0 syz-executor *137717 70612 0 0x2 0 1K syz-executor ufs_lookup() at ufs_lookup+0x623 sys/ufs/ufs/ufs_lookup.c:279 VOP_LOOKUP(fffffd805e039e90,ffff80002a390128,ffff80002a390158) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80002a3900f8) at vfs_lookup+0x93a sys/kern/vfs_lookup.c:566 namei(ffff80002a3900f8) at namei+0x7ca sys/kern/vfs_lookup.c:250 dounlinkat(ffff80002a271240,ffffff9c,7de45a8744b0,0) at dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1868 syscall(ffff80002a3902d0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3902d0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7de45a874960, 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: uvm_fault(0xffffffff838fce98, 0xffff8000297c2004, 0, 1) -> d ddb{1}> trace ufs_lookup() at ufs_lookup+0x623 sys/ufs/ufs/ufs_lookup.c:279 VOP_LOOKUP(fffffd805e039e90,ffff80002a390128,ffff80002a390158) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80002a3900f8) at vfs_lookup+0x93a sys/kern/vfs_lookup.c:566 namei(ffff80002a3900f8) at namei+0x7ca sys/kern/vfs_lookup.c:250 dounlinkat(ffff80002a271240,ffffff9c,7de45a8744b0,0) at dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1868 syscall(ffff80002a3902d0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3902d0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7de45a874960, count: -7 ddb{1}> show registers rdi 0 rsi 0x2 rbp 0xffff80002a38ff30 rbx 0 rdx 0 rcx 0xffff80002a271240 rax 0xffff8000299edff0 r8 0xffffffffffffffff r9 0xfffffd80097fb2d8 r10 0x44bc352f75414cbc r11 0x295b63e3a75e05f4 r12 0xfffffd805df2b9e0 r13 0 r14 0 r15 0xffff8000297c2000 rip 0xffffffff81d272a3 ufs_lookup+0x623 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002a38fe40 ss 0x10 ufs_lookup+0x623: movzwl 0x4(%r15,%r14,1),%ebx ddb{1}> show proc PROC (syz-executor) tid=137717 pid=70612 tcnt=1 stat=onproc flags process=2 proc=0 runpri=50, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a2714d8,0xffff80002a270d20 process=0xffff8000ffff6688 user=0xffff80002a38b000, vmspace=0xfffffd800b027b70 estcpu=36, cpticks=37, pctcpu=0.12, user=2, sys=33, intr=1 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 11314 174787 30028 0 7 0 syz-executor 11314 243935 30028 0 3 0x4000080 fsleep syz-executor 21748 259607 89037 0 2 0 syz-executor 21748 310308 89037 0 3 0x4000080 fsleep syz-executor 52359 149528 84116 0 2 0 syz-executor 52359 226784 84116 0 3 0x4000080 fsleep syz-executor 52359 134737 84116 0 2 0x4000000 syz-executor 52359 331556 84116 0 3 0x4000080 fsleep syz-executor 6146 229943 37909 0 2 0 syz-executor 6146 70142 37909 0 3 0x4000080 kqread syz-executor 6146 265081 37909 0 2 0x4000000 syz-executor 26709 207330 97894 0 2 0 syz-executor 26709 241505 97894 0 3 0x4000080 msgwait syz-executor 26709 195272 97894 0 3 0x4000080 msgwait syz-executor 26709 323961 97894 0 3 0x4000080 fsleep syz-executor 83393 90387 0 0 3 0x14280 nfsidl nfsio 51877 143886 0 0 3 0x14280 nfsidl nfsio 44260 203561 0 0 3 0x14280 nfsidl nfsio 57300 86864 0 0 3 0x14280 nfsidl nfsio 9687 271648 0 0 3 0x14280 nfsidl nfsio 15002 414923 0 0 3 0x14280 nfsidl nfsio 24855 86654 0 0 3 0x14280 nfsidl nfsio 86709 244465 0 0 3 0x14280 nfsidl nfsio 2788 161081 0 0 3 0x14280 nfsidl nfsio 96190 50543 0 0 3 0x14280 nfsidl nfsio 97493 65808 0 0 3 0x14280 nfsidl nfsio 34097 497754 0 0 3 0x14280 nfsidl nfsio 22591 32463 0 0 3 0x14280 nfsidl nfsio 31698 333771 0 0 3 0x14280 nfsidl nfsio 45661 466642 0 0 3 0x14280 nfsidl nfsio 22333 197645 0 0 3 0x14280 nfsidl nfsio 8396 46161 0 0 3 0x14280 nfsidl nfsio 80250 118075 0 0 3 0x14280 nfsidl nfsio 21354 282377 0 0 3 0x14280 nfsidl nfsio 25473 432741 0 0 3 0x14280 nfsidl nfsio 37909 418546 69256 0 3 0x82 nanoslp syz-executor 88487 48100 0 0 3 0x14200 bored sosplice 18688 431812 69256 0 3 0x82 nanoslp syz-executor 84116 260506 69256 0 3 0x82 nanoslp syz-executor *70612 137717 69256 0 7 0x2 syz-executor 97894 74511 69256 0 3 0x82 nanoslp syz-executor 30028 226269 69256 0 3 0x82 nanoslp syz-executor 89037 31459 69256 0 3 0x82 nanoslp syz-executor 36536 369220 69256 0 3 0x82 piperd syz-executor 69256 342778 96323 0 2 0x2 syz-executor 96323 253772 14184 0 3 0x10008a sigsusp ksh 14184 495408 49117 0 3 0x98 kqread sshd-session 49117 290849 86771 0 3 0x92 kqread sshd-session 75988 357839 1 0 3 0x100083 ttyin getty 86771 121431 1 0 3 0x88 kqread sshd 24398 124088 2164 74 3 0x1100092 bpf pflogd 2164 108457 1 0 3 0x80 sbwait pflogd 15986 48494 21184 73 3 0x1100090 kqread syslogd 21184 274263 1 0 3 0x100082 sbwait syslogd 69800 198393 1 0 3 0x100080 kqread resolvd 90944 267131 92453 77 3 0x100092 kqread dhcpleased 8623 404107 92453 77 3 0x100092 kqread dhcpleased 92453 339860 1 0 3 0x80 kqread dhcpleased 40149 405201 0 0 3 0x14200 bored smr 57533 353536 0 0 2 0x14200 zerothread 58742 43200 0 0 3 0x14200 aiodoned aiodoned 23019 517083 0 0 3 0x14200 syncer update 99424 60680 0 0 3 0x14200 cleaner cleaner 20471 386556 0 0 3 0x14200 reaper reaper 77899 77128 0 0 3 0x14200 pgdaemon pagedaemon 35474 287087 0 0 3 0x14200 bored viomb 58417 77667 0 0 3 0x40014200 acpi0 acpi0 64642 71253 0 0 3 0x40014200 idle1 77226 343177 0 0 3 0x14200 bored softnet1 39840 239057 0 0 3 0x14200 bored softnet0 61281 33817 0 0 3 0x14200 bored systqmp 43168 388401 0 0 3 0x14200 bored systq 5408 163202 0 0 3 0x14200 tmoslp softclockmp 27855 171312 0 0 3 0x40014200 tmoslp softclock 2313 55307 0 0 3 0x40014200 idle0 1 461075 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 6146 (syz-executor) thread 0xffff80003c41f790 (265081) exclusive rrwlock inode r = 0 (0xfffffd806f4ed8e8) #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 vget+0x2a2 sys/kern/vfs_subr.c:693 #6 cache_lookup+0x351 sys/kern/vfs_cache.c:222 #7 ufs_lookup+0x1e3 sys/ufs/ufs/ufs_lookup.c:160 #8 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #9 vfs_lookup+0x93a sys/kern/vfs_lookup.c:566 #10 namei+0x7ca sys/kern/vfs_lookup.c:250 #11 vn_open+0x15a sys/kern/vfs_vnops.c:140 #12 doopenat+0x35b sys/kern/vfs_syscalls.c:1138 #13 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 #14 Xsyscall+0x128 Process 70612 (syz-executor) thread 0xffff80002a271240 (137717) exclusive rrwlock inode r = 0 (0xfffffd806b85d8f8) #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 vget+0x2a2 sys/kern/vfs_subr.c:693 #6 cache_lookup+0x351 sys/kern/vfs_cache.c:222 #7 ufs_lookup+0x1e3 sys/ufs/ufs/ufs_lookup.c:160 #8 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #9 vfs_lookup+0x93a sys/kern/vfs_lookup.c:566 #10 namei+0x7ca sys/kern/vfs_lookup.c:250 #11 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1868 #12 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #12 syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 #13 Xsyscall+0x128 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 pool_get+0x27e sys/kern/subr_pool.c:591 #3 namei+0xdf sys/kern/vfs_lookup.c:145 #4 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1868 #5 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 #6 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10236 11179K 11757K 166960K 12527 0 pcb 17 16K 21K 166960K 234 0 rtable 238 9K 9K 166960K 358 0 pf 38 18K 20K 166960K 107 0 ifaddr 45 8K 8K 166960K 76 0 ifgroup 57 2K 2K 166960K 119 0 sysctl 4 1K 9K 166960K 9 0 counters 70 37K 37K 166960K 136 0 ioctlops 0 0K 4K 166960K 1622 0 iov 0 0K 16K 166960K 33 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1398 88K 88K 166960K 1970 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 7 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 65 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 106K 166960K 757 0 sigio 0 0K 0K 166960K 92 0 proc 72 115K 164K 166960K 617 0 subproc 72 4K 4K 166960K 81 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 115 0 in_multi 99 7K 7K 166960K 146 0 ether_multi 1 0K 0K 166960K 8 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 217 970K 970K 166960K 217 0 exec 0 0K 1K 166960K 451 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 3 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 239 159K 187K 166960K 8610 0 UVM aobj 16 2K 2K 166960K 16 0 pinsyscall 41 82K 102K 166960K 1869 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 56 0 NDP 13 0K 2K 166960K 52 0 temp 71 8650K 8715K 166960K 25682 0 kqueue 15 20K 29K 166960K 142 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 26 0 0 1 0 1 1 0 8 0 rtpcb 120 82 0 79 1 0 1 1 0 8 0 rtentry 176 123 0 20 5 0 5 5 0 8 0 unpcb 144 519 0 501 5 4 1 4 0 8 0 syncache 336 8 0 8 2 2 0 1 0 8 0 tcpcb 736 283 0 278 13 6 7 7 0 8 6 arp 136 14 0 3 1 0 1 1 0 8 0 inpcb 328 949 0 940 22 15 7 12 0 8 5 nd6 144 23 0 3 1 0 1 1 0 8 0 pkpcb 40 9 0 9 2 2 0 1 0 8 0 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1192 27 0 26 3 2 1 1 0 8 0 pppxif 1504 1 0 1 1 0 1 1 0 8 1 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 8 0 4 1 0 1 1 0 482 0 pffrnode 88 8 0 4 1 0 1 1 0 8 0 pffrent 40 14 0 10 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 pfstitem 24 62 0 20 1 0 1 1 0 8 0 pfstkey 128 63 0 21 2 0 2 2 0 8 0 pfstate 384 63 0 21 6 0 6 6 0 8 0 pfrule 1344 24 0 19 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 550 0 86 33 3 30 30 0 8 0 art_table 40 552 0 86 5 0 5 5 0 8 0 art_node 32 123 0 32 1 0 1 1 0 8 0 sysvmsgpl 40 45 0 6 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 62 0 52 1 0 1 1 0 8 0 shmpl 112 13 0 0 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 2779 0 1271 96 0 96 96 0 8 0 ffsino 296 2779 0 1271 118 1 117 118 0 8 0 nchpl 144 3845 0 2145 64 0 64 64 0 8 0 rtmask 32 8 0 8 3 2 1 1 0 8 1 uvmvnodes 80 3180 0 0 65 0 65 65 0 8 0 vnodes 216 3180 0 0 177 0 177 177 0 8 0 namei 1024 13012 0 13011 3 2 1 2 0 8 0 percpumem 16 83 0 33 1 0 1 1 0 8 0 kstatmem 264 70 0 42 4 2 2 3 0 8 0 scsiplug 72 3 0 3 2 2 0 1 0 8 0 scxspl 216 15866 0 15866 11 9 2 8 1 8 2 plimitpl 152 260 0 243 1 0 1 1 0 8 0 sigapl 424 1074 0 1007 8 0 8 8 0 8 0 knotepl 120 557 0 0 17 0 17 17 0 8 0 kqueuepl 224 281 0 261 5 3 2 3 0 8 0 pipepl 344 274 0 247 12 3 9 9 0 8 6 fdescpl 528 1032 0 1002 3 0 3 3 0 8 0 filepl 160 6728 0 6491 23 8 15 16 0 8 3 lockfpl 104 345 0 340 1 0 1 1 0 8 0 lockfspl 48 156 0 151 1 0 1 1 0 8 0 sessionpl 144 24 0 15 1 0 1 1 0 8 0 pgrppl 48 38 0 21 1 0 1 1 0 8 0 ucredpl 104 1134 0 1121 1 0 1 1 0 8 0 zombiepl 144 1103 0 1102 2 1 1 1 0 8 0 processpl 1232 1074 0 1007 7 1 6 6 0 8 0 procpl 664 2149 0 2072 8 0 8 8 0 8 0 sosppl 168 4 0 4 2 2 0 1 0 8 0 sockpl 752 1579 0 1549 30 19 11 18 0 8 7 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 124 0 0 16 0 16 16 0 8 0 mcl2k 2048 22 0 0 3 0 3 3 0 8 0 mtagpl 96 4 0 0 1 0 1 1 0 8 0 mbufpl 256 227 0 0 14 0 14 14 0 8 0 bufpl 280 6504 0 361 439 0 439 439 0 8 0 anonpl 32 9730 0 0 79 0 79 79 0 246 0 amapchunkpl 152 40581 0 40091 47 21 26 37 0 158 2 amappl16 200 3313 0 3279 28 15 13 15 0 8 8 amappl15 192 8 0 7 1 0 1 1 0 8 0 amappl14 184 115 0 103 1 0 1 1 0 8 0 amappl13 176 5 0 5 1 1 0 1 0 8 0 amappl12 168 1694 0 1664 3 1 2 2 0 8 0 amappl11 160 60 0 44 1 0 1 1 0 8 0 amappl10 152 8 0 8 1 1 0 1 0 8 0 amappl9 144 260 0 260 2 2 0 1 0 8 0 amappl8 136 21 0 18 1 0 1 1 0 8 0 amappl7 128 108 0 96 1 0 1 1 0 8 0 amappl6 120 189 0 186 1 0 1 1 0 8 0 amappl5 112 126 0 116 1 0 1 1 0 8 0 amappl4 104 300 0 281 1 0 1 1 0 8 0 amappl3 96 4776 0 4679 3 0 3 3 0 8 0 amappl2 88 1270 0 1190 2 0 2 2 0 8 0 amappl1 80 10901 0 10311 15 1 14 15 0 8 0 amappl 88 7797 0 7630 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 128 255 0 255 3 3 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 1032 0 1002 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1032 0 1002 1 0 1 1 0 8 0 vmmpekpl 168 10092 0 10050 3 0 3 3 0 8 0 vmmpepl 168 69976 0 68031 102 5 97 100 0 357 7 vmsppl 488 1031 0 1002 6 1 5 5 0 8 0 rwobjpl 80 23708 0 19576 86 1 85 85 0 8 0 pdppl 4096 2072 0 2004 106 34 72 82 0 8 4 pvpl 32 17539 0 0 142 0 142 142 0 265 0 pmappl 256 1031 0 1002 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 299 0 49 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83799ff0) 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+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff838f9428) at __mp_lock+0x192 sys/kern/kern_lock.c:165 uvm_fault(fffffd805edc8b98,2a93388e000,0,1) at uvm_fault+0x1ea sys/uvm/uvm_fault.c:656 upageflttrap(ffff80003c4ebb50,2a93388e000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80003c4ebb50) at usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:603 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x73a9d374da10, count: 7 ddb{0}> trace x86_ipi_db(ffffffff83799ff0) 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+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff838f9428) at __mp_lock+0x192 sys/kern/kern_lock.c:165 uvm_fault(fffffd805edc8b98,2a93388e000,0,1) at uvm_fault+0x1ea sys/uvm/uvm_fault.c:656 upageflttrap(ffff80003c4ebb50,2a93388e000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80003c4ebb50) at usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:603 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x73a9d374da10, count: -8 ddb{0}> machine ddbcpu 1 Stopped at ufs_lookup+0x623: movzwl 0x4(%r15,%r14,1),%ebx ufs_lookup() at ufs_lookup+0x623 sys/ufs/ufs/ufs_lookup.c:279 VOP_LOOKUP(fffffd805e039e90,ffff80002a390128,ffff80002a390158) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80002a3900f8) at vfs_lookup+0x93a sys/kern/vfs_lookup.c:566 namei(ffff80002a3900f8) at namei+0x7ca sys/kern/vfs_lookup.c:250 dounlinkat(ffff80002a271240,ffffff9c,7de45a8744b0,0) at dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1868 syscall(ffff80002a3902d0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3902d0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7de45a874960, count: 8 ddb{1}> trace ufs_lookup() at ufs_lookup+0x623 sys/ufs/ufs/ufs_lookup.c:279 VOP_LOOKUP(fffffd805e039e90,ffff80002a390128,ffff80002a390158) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80002a3900f8) at vfs_lookup+0x93a sys/kern/vfs_lookup.c:566 namei(ffff80002a3900f8) at namei+0x7ca sys/kern/vfs_lookup.c:250 dounlinkat(ffff80002a271240,ffffff9c,7de45a8744b0,0) at dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1868 syscall(ffff80002a3902d0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3902d0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7de45a874960, count: -7