uvm_fault(0xffffffff839e5648, 0xffff800025502004, 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 *297829 78312 0 0x2000 0x4000000 1K syz-executor 431606 36842 0 0 0 0 syz-executor ufs_lookup() at ufs_lookup+0x623 sys/ufs/ufs/ufs_lookup.c:279 VOP_LOOKUP(fffffd800ea8c288,ffff80002a7b9648,ffff80002a7b9678) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80002a7b9618) at vfs_lookup+0x963 sys/kern/vfs_lookup.c:580 namei(ffff80002a7b9618) at namei+0x7c5 sys/kern/vfs_lookup.c:250 sys_unveil(ffff80003b7c7258,ffff80002a7b9800,ffff80002a7b9750) at sys_unveil+0x329 sys/kern/vfs_syscalls.c:1009 syscall(ffff80002a7b9800) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a7b9800) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa39371d3600, 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(0xffffffff839e5648, 0xffff800025502004, 0, 1) -> d ddb{1}> trace ufs_lookup() at ufs_lookup+0x623 sys/ufs/ufs/ufs_lookup.c:279 VOP_LOOKUP(fffffd800ea8c288,ffff80002a7b9648,ffff80002a7b9678) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80002a7b9618) at vfs_lookup+0x963 sys/kern/vfs_lookup.c:580 namei(ffff80002a7b9618) at namei+0x7c5 sys/kern/vfs_lookup.c:250 sys_unveil(ffff80003b7c7258,ffff80002a7b9800,ffff80002a7b9750) at sys_unveil+0x329 sys/kern/vfs_syscalls.c:1009 syscall(ffff80002a7b9800) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a7b9800) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa39371d3600, count: -7 ddb{1}> show registers rdi 0 rsi 0x2 rbp 0xffff80002a7b9450 rbx 0 rdx 0xffff8000015f8640 rcx 0xffff80003b7c7258 rax 0xffff80002999dff0 r8 0xffffffffffffffff r9 0xfffffd80097fd478 r10 0x8b044fb7e2f6589b r11 0xa592666b67be3d4e r12 0xfffffd800eb517d0 r13 0 r14 0 r15 0xffff800025502000 rip 0xffffffff830ebb73 ufs_lookup+0x623 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002a7b9360 ss 0x10 ufs_lookup+0x623: movzwl 0x4(%r15,%r14,1),%ebx ddb{1}> show proc PROC (syz-executor) tid=297829 pid=78312 tcnt=2 stat=onproc flags process=2000 proc=4000000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003b7c7258 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003b7caa98,0xffffffff83af0ad0 process=0xffff80003c3ec4f8 user=0xffff80002a7b4000, vmspace=0xfffffd806c6a3200 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 78312 207138 50724 0 4 0x82000 syz-executor *78312 297829 50724 0 7 0x4002000 syz-executor 36842 431606 26089 0 7 0 syz-executor 36842 46090 26089 0 3 0x4000080 fsleep syz-executor 58597 219906 76620 0 3 0x80 nanoslp syz-executor 58597 495919 76620 0 3 0x4000088 kqpoll syz-executor 58597 407572 76620 0 3 0x4000080 bell syz-executor 58597 375109 76620 0 3 0x4000080 fsleep syz-executor 80819 222131 41665 0 3 0x80 nanoslp syz-executor 80819 515682 41665 0 3 0x4000080 kqpoll syz-executor 80819 455199 41665 0 3 0x4000080 fsleep syz-executor 30474 207457 99150 0 3 0x4000080 nanoslp syz-executor 30474 104876 99150 0 3 0x4000080 sbwait syz-executor 15002 234982 72039 0 3 0x80 nanoslp syz-executor 15002 380386 72039 0 3 0x4000080 ttyretype syz-executor 15002 517616 72039 0 3 0x4000080 fsleep syz-executor 2399 85803 0 0 3 0x14200 acct acct 41665 160806 62371 0 3 0x82 nanoslp syz-executor 92471 341942 0 0 3 0x14280 nfsidl nfsio 35386 375730 0 0 3 0x14280 nfsidl nfsio 22395 356236 0 0 3 0x14280 nfsidl nfsio 31360 277312 0 0 3 0x14280 nfsidl nfsio 98992 233955 0 0 3 0x14280 nfsidl nfsio 33946 430434 0 0 3 0x14280 nfsidl nfsio 75011 78433 0 0 3 0x14280 nfsidl nfsio 19773 250392 0 0 3 0x14280 nfsidl nfsio 45247 342660 0 0 3 0x14280 nfsidl nfsio 35631 1946 0 0 3 0x14280 nfsidl nfsio 28834 113111 0 0 3 0x14280 nfsidl nfsio 83361 92834 0 0 3 0x14280 nfsidl nfsio 48320 331384 0 0 3 0x14280 nfsidl nfsio 71645 230975 0 0 3 0x14280 nfsidl nfsio 80590 278677 0 0 3 0x14280 nfsidl nfsio 41425 265018 0 0 3 0x14280 nfsidl nfsio 10670 163611 0 0 3 0x14280 nfsidl nfsio 91947 409133 0 0 3 0x14280 nfsidl nfsio 83423 396007 0 0 3 0x14280 nfsidl nfsio 54517 205609 0 0 3 0x14280 nfsidl nfsio 98133 334048 1 0 3 0x100083 ttyin getty 68080 191908 40429 0 3 0x100082 sbwait ndp 40429 428381 57840 0 3 0x10008a sigsusp sh 72039 346287 62371 0 3 0x82 nanoslp syz-executor 99150 35868 62371 0 3 0x82 nanoslp syz-executor 76620 424208 62371 0 3 0x82 nanoslp syz-executor 26089 399476 62371 0 3 0x82 nanoslp syz-executor 50724 53854 62371 0 3 0x82 nanoslp syz-executor 57840 314439 62371 0 3 0x82 wait syz-executor 62371 419880 43181 0 3 0x82 wait syz-executor 43181 23591 956 0 3 0x10008a sigsusp ksh 956 354586 63233 0 3 0x98 kqread sshd-session 63233 63308 7494 0 3 0x92 kqread sshd-session 7494 112847 1 0 3 0x88 kqread sshd 33661 154146 26929 74 3 0x1100092 bpf pflogd 26929 17716 1 0 3 0x80 sbwait pflogd 67311 45421 83465 73 3 0x1100090 kqread syslogd 83465 276369 1 0 3 0x100082 sbwait syslogd 67660 103363 1 0 3 0x100080 kqread resolvd 73799 153228 97123 77 3 0x100092 kqread dhcpleased 28788 486662 97123 77 3 0x100092 kqread dhcpleased 97123 346158 1 0 3 0x80 kqread dhcpleased 2902 96170 0 0 3 0x14200 bored smr 39489 259983 0 0 3 0x14200 pgzero zerothread 85415 227866 0 0 3 0x14200 aiodoned aiodoned 47088 465764 0 0 3 0x14200 syncer update 82349 276085 0 0 3 0x14200 cleaner cleaner 2332 268765 0 0 3 0x14200 reaper reaper 69812 87596 0 0 3 0x14200 pgdaemon pagedaemon 44856 111638 0 0 3 0x14200 bored viomb 22257 522492 0 0 3 0x40014200 acpi0 acpi0 47488 132498 0 0 3 0x40014200 idle1 16114 481830 0 0 3 0x14200 bored softnet1 53493 473676 0 0 3 0x14200 bored softnet0 44812 439645 0 0 3 0x14200 bored systqmp 66718 431756 0 0 3 0x14200 bored systq 22525 285639 0 0 3 0x14200 tmoslp softclockmp 70903 7666 0 0 3 0x40014200 tmoslp softclock 50493 376433 0 0 3 0x40014200 idle0 1 442321 0 0 4 0x48000082 init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 78312 (syz-executor) thread 0xffff80003b7c7258 (297829) exclusive rrwlock inode r = 0 (0xfffffd806d99a1d0) #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+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576 #5 vfs_lookup+0x12b sys/kern/vfs_lookup.c:431 #6 namei+0x7c5 sys/kern/vfs_lookup.c:250 #7 sys_unveil+0x329 sys/kern/vfs_syscalls.c:1009 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #9 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83aaab00) #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:369 #3 msleep_nsec+0x132 sys/kern/kern_synch.c:219 #4 single_thread_set+0x1de sys/kern/kern_sig.c:2336 #5 sys_unveil+0x117 sys/kern/vfs_syscalls.c:981 #6 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #7 Xsyscall+0x128 Process 36842 (syz-executor) thread 0xffff80003b7cb260 (431606) exclusive rwlock uobjlk r = 0 (0xfffffd806ca6ddd8) #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 uvm_fault+0x1e5 sys/uvm/uvm_fault.c:649 #3 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #4 usertrap+0x430 sys/arch/amd64/amd64/trap.c:640 #5 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd806c6a36d0) #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_read+0x3e8 sys/kern/kern_rwlock.c:413 #2 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1880 #3 uvm_fault_check+0x4f sys/uvm/uvm_fault.c:693 #4 uvm_fault+0x106 sys/uvm/uvm_fault.c:627 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #6 usertrap+0x430 sys/arch/amd64/amd64/trap.c:640 #7 recall_trap+0x8 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11078 12114K 14011K 166960K 13919 0 pcb 19 14K 15K 166960K 232 0 rtable 228 9K 10K 166960K 601 0 pf 36 18K 24K 166960K 478 0 ifaddr 38 6K 7K 166960K 75 0 ifgroup 51 2K 2K 166960K 108 0 sysctl 4 1K 9K 166960K 16 0 counters 68 36K 37K 166960K 126 0 ioctlops 0 0K 4K 166960K 2012 0 iov 0 0K 32K 166960K 48 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1476 93K 94K 166960K 2526 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 18 0 VM map 2 1K 1K 166960K 2 0 sem 25 21K 21K 166960K 133 0 dirhash 12 2K 2K 166960K 24 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 106K 166960K 1125 0 sigio 0 0K 0K 166960K 8 0 proc 72 115K 163K 166960K 661 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 118 0 in_multi 85 6K 7K 166960K 157 0 ether_multi 1 0K 0K 166960K 7 0 mrt 1 0K 0K 166960K 30 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 115 519K 519K 166960K 115 0 exec 0 0K 1K 166960K 495 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 250 170K 195K 166960K 11851 0 UVM aobj 96 3K 4K 166960K 98 0 pinsyscall 44 88K 102K 166960K 2360 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 25 0 NDP 11 0K 1K 166960K 50 0 temp 63 9120K 9249K 166960K 71386 0 kqueue 15 24K 30K 166960K 219 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 120 147 0 143 2 1 1 2 0 8 0 rtentry 176 155 0 60 6 0 6 6 0 8 0 unpcb 144 690 0 670 5 1 4 4 0 8 3 syncache 336 10 0 10 1 0 1 1 0 8 1 tcpcb 736 295 0 288 4 2 2 3 0 8 1 arp 136 24 0 7 1 0 1 1 0 8 0 inpcb 328 1125 0 1111 8 0 8 8 0 8 6 nd6 152 39 0 14 2 0 2 2 0 8 0 pkpcb 40 8 0 8 2 1 1 1 0 8 1 kcovpl 48 10 0 2 1 0 1 1 0 8 0 ppxss 1192 21 0 21 1 0 1 1 0 8 1 pppxif 1576 2 0 2 1 0 1 1 0 8 1 pfstscr 40 74 0 69 1 0 1 1 0 8 0 pffrag 232 11 0 1 1 0 1 1 0 482 0 pffrnode 88 11 0 1 1 0 1 1 0 8 0 pffrent 40 13 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 1 0 1 1 1 0 1 0 8 0 pfsrclim 320 6 0 6 1 0 1 1 0 8 1 pfanchor 1288 93 0 0 8 0 8 8 0 8 0 pftag 88 4 0 0 1 0 1 1 0 8 0 pfqueue 320 1 0 1 1 1 0 1 0 8 0 pfstitem 24 101 0 79 1 0 1 1 0 8 0 pfstkey 128 105 0 83 3 0 3 3 0 8 0 pfstate 448 70 0 50 8 3 5 8 0 8 0 pfrule 1360 130 0 124 2 1 1 2 0 8 0 rttmr 136 3 0 3 1 0 1 1 0 8 1 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 721 0 321 33 2 31 33 0 8 3 art_table 40 724 0 321 6 1 5 6 0 8 0 art_node 32 154 0 68 1 0 1 1 0 8 0 sysvmsgpl 40 11 0 4 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 72 125 0 102 1 0 1 1 0 8 0 shmpl 112 95 0 2 3 0 3 3 0 8 0 dirhash 1024 25 0 8 3 0 3 3 0 8 0 dino2pl 256 3453 0 1993 93 0 93 93 0 8 0 ffsino 296 3453 0 1993 114 0 114 114 0 8 0 nchpl 144 4976 0 3263 64 0 64 64 0 8 0 rtmask 32 5 0 5 2 1 1 1 0 8 1 vnodes 216 4224 0 0 235 0 235 235 0 8 0 namei 1024 17554 0 17552 2 1 1 2 0 8 0 percpumem 16 78 0 29 1 0 1 1 0 8 0 kstatmem 264 63 0 38 3 0 3 3 0 8 1 scsiplug 72 4 0 4 1 0 1 1 0 8 1 scxspl 216 20998 0 20998 10 3 7 8 1 8 7 plimitpl 152 177 0 159 1 0 1 1 0 8 0 sigapl 424 1461 0 1392 10 1 9 9 0 8 0 knotepl 120 770 0 0 24 0 24 24 0 8 0 kqueuepl 224 422 0 409 8 3 5 5 0 8 4 pipepl 344 228 0 201 3 0 3 3 0 8 0 fdescpl 528 1423 0 1391 3 0 3 3 0 8 0 filepl 160 9065 0 8837 17 0 17 17 0 8 4 lockfpl 104 507 0 505 1 0 1 1 0 8 0 lockfspl 48 168 0 166 1 0 1 1 0 8 0 sessionpl 144 125 0 116 1 0 1 1 0 8 0 pgrppl 48 145 0 128 1 0 1 1 0 8 0 ucredpl 104 1681 0 1667 1 0 1 1 0 8 0 zombiepl 144 1393 0 1392 1 0 1 1 0 8 0 processpl 1232 1461 0 1392 6 0 6 6 0 8 0 procpl 664 3045 0 2966 8 0 8 8 0 8 0 sosppl 176 7 0 7 1 0 1 1 0 8 1 sockpl 752 2007 0 1969 14 2 12 14 0 8 7 mcl64k 65536 7 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl9k128 9344 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 125 0 0 16 0 16 16 0 8 0 mcl2k 2048 33 0 0 4 0 4 4 0 8 0 mtagpl 96 6 0 0 1 0 1 1 0 8 0 mbufpl 256 262 0 0 16 0 16 16 0 8 0 bufpl 280 7577 0 1446 439 0 439 439 0 8 0 anonpl 32 11670 0 0 95 0 95 95 0 246 0 amapchunkpl 152 39239 0 38697 33 0 33 33 0 158 9 amappl16 200 3673 0 3641 21 9 12 16 0 8 8 amappl15 192 10 0 9 1 0 1 1 0 8 0 amappl14 184 455 0 453 1 0 1 1 0 8 0 amappl13 176 138 0 125 1 0 1 1 0 8 0 amappl12 168 1706 0 1674 2 0 2 2 0 8 0 amappl11 160 21 0 21 2 2 0 1 0 8 0 amappl10 152 71 0 57 1 0 1 1 0 8 0 amappl9 144 273 0 273 1 1 0 1 0 8 0 amappl8 136 123 0 119 1 0 1 1 0 8 0 amappl7 128 163 0 148 1 0 1 1 0 8 0 amappl6 120 184 0 181 1 0 1 1 0 8 0 amappl5 112 107 0 96 1 0 1 1 0 8 0 amappl4 104 328 0 305 1 0 1 1 0 8 0 amappl3 96 7924 0 7807 4 0 4 4 0 8 0 amappl2 88 599 0 533 2 0 2 2 0 8 0 amappl1 80 15489 0 14861 17 0 17 17 0 8 2 amappl 88 10873 0 10702 5 0 5 5 0 92 0 uvmvnodes 80 146 0 0 3 0 3 3 0 8 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 8 0 8 3 2 1 1 0 8 1 dma128 128 254 0 254 2 1 1 1 0 8 1 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 97 0 2 2 0 2 2 0 8 0 uaddrrnd 24 1423 0 1391 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1423 0 1391 1 0 1 1 0 8 0 vmmpekpl 168 13177 0 13130 3 0 3 3 0 8 0 vmmpepl 168 96454 0 94467 102 0 102 102 0 357 7 vmsppl 488 1422 0 1391 5 0 5 5 0 8 0 rwobjpl 80 27547 0 26304 30 0 30 30 0 8 0 pdppl 4096 2853 0 2782 103 28 75 83 0 8 4 pvpl 32 19787 0 0 160 0 160 160 0 265 0 pmappl 256 1422 0 1391 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 299 0 40 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83991ff0) 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(ffffffff83aaa300) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83aaa300) at __mp_lock+0x192 sys/kern/kern_lock.c:173 softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 __mp_lock(ffffffff83aaa300) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83aaa300) at __mp_lock+0x192 sys/kern/kern_lock.c:173 uvm_fault(fffffd806c6a35d0,4c1e42d2000,0,1) at uvm_fault+0x1ea sys/uvm/uvm_fault.c:650 upageflttrap(ffff80003c4119d0,4c1e42d2000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80003c4119d0) at usertrap+0x430 sys/arch/amd64/amd64/trap.c:640 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7e605d6ea640, count: 3 ddb{0}> trace x86_ipi_db(ffffffff83991ff0) 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(ffffffff83aaa300) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83aaa300) at __mp_lock+0x192 sys/kern/kern_lock.c:173 softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 __mp_lock(ffffffff83aaa300) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83aaa300) at __mp_lock+0x192 sys/kern/kern_lock.c:173 uvm_fault(fffffd806c6a35d0,4c1e42d2000,0,1) at uvm_fault+0x1ea sys/uvm/uvm_fault.c:650 upageflttrap(ffff80003c4119d0,4c1e42d2000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80003c4119d0) at usertrap+0x430 sys/arch/amd64/amd64/trap.c:640 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7e605d6ea640, count: -12 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(fffffd800ea8c288,ffff80002a7b9648,ffff80002a7b9678) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80002a7b9618) at vfs_lookup+0x963 sys/kern/vfs_lookup.c:580 namei(ffff80002a7b9618) at namei+0x7c5 sys/kern/vfs_lookup.c:250 sys_unveil(ffff80003b7c7258,ffff80002a7b9800,ffff80002a7b9750) at sys_unveil+0x329 sys/kern/vfs_syscalls.c:1009 syscall(ffff80002a7b9800) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a7b9800) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa39371d3600, count: 8 ddb{1}> trace ufs_lookup() at ufs_lookup+0x623 sys/ufs/ufs/ufs_lookup.c:279 VOP_LOOKUP(fffffd800ea8c288,ffff80002a7b9648,ffff80002a7b9678) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80002a7b9618) at vfs_lookup+0x963 sys/kern/vfs_lookup.c:580 namei(ffff80002a7b9618) at namei+0x7c5 sys/kern/vfs_lookup.c:250 sys_unveil(ffff80003b7c7258,ffff80002a7b9800,ffff80002a7b9750) at sys_unveil+0x329 sys/kern/vfs_syscalls.c:1009 syscall(ffff80002a7b9800) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a7b9800) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa39371d3600, count: -7