login: uvm_fault(0xffffffff83ad71f0, 0xffff800027d32004, 0, 1) -> d kernel: page fault trap, code=0 Stopped at ufs_lookup+0x613: movzwl 0x4(%r15,%r14,1),%ebx TID PID UID PRFLAGS PFLAGS CPU COMMAND *250507 16298 0 0 0x4000000 0 syz-executor ufs_lookup() at ufs_lookup+0x613 sys/ufs/ufs/ufs_lookup.c:279 VOP_LOOKUP(fffff8004c331d88,ffff80003b0cd2c0,ffff80003b0cd2f0) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80003b0cd290) at vfs_lookup+0x94a sys/kern/vfs_lookup.c:580 namei(ffff80003b0cd290) at namei+0x7c3 sys/kern/vfs_lookup.c:250 vn_open(ffff80003b0cd290,3,0) at vn_open+0x178 sys/kern/vfs_vnops.c:146 doopenat(ffff80002a727760,ffffff9c,200000000000,2,0,0,2f24080ff1e7c62f) at doopenat+0x352 sys/kern/vfs_syscalls.c:1162 sys_open(ffff80002a727760,ffff80003b0cd530,ffff80003b0cd480) at sys_open+0x59 sys/kern/vfs_syscalls.c:1064 syscall(ffff80003b0cd530) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003b0cd530) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xba795707570, count: 6 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> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic *cpu0: uvm_fault(0xffffffff83ad71f0, 0xffff800027d32004, 0, 1) -> d ddb> trace ufs_lookup() at ufs_lookup+0x613 sys/ufs/ufs/ufs_lookup.c:279 VOP_LOOKUP(fffff8004c331d88,ffff80003b0cd2c0,ffff80003b0cd2f0) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80003b0cd290) at vfs_lookup+0x94a sys/kern/vfs_lookup.c:580 namei(ffff80003b0cd290) at namei+0x7c3 sys/kern/vfs_lookup.c:250 vn_open(ffff80003b0cd290,3,0) at vn_open+0x178 sys/kern/vfs_vnops.c:146 doopenat(ffff80002a727760,ffffff9c,200000000000,2,0,0,2f24080ff1e7c62f) at doopenat+0x352 sys/kern/vfs_syscalls.c:1162 sys_open(ffff80002a727760,ffff80003b0cd530,ffff80003b0cd480) at sys_open+0x59 sys/kern/vfs_syscalls.c:1064 syscall(ffff80003b0cd530) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003b0cd530) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xba795707570, count: -9 ddb> show registers rdi 0 rsi 0x2 rbp 0xffff80003b0ccef0 rbx 0 rdx 0 rcx 0xffffffff rax 0xffff80002a727760 r8 0xffffffffffffffff r9 0xfffff80007ffd750 r10 0x71191b05240804be r11 0xb65b5f56d4e17c6d r12 0xfffff8004c943110 r13 0 r14 0 r15 0xffff800027d32000 rip 0xffffffff82041cb3 ufs_lookup+0x613 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003b0cce00 ss 0x10 ufs_lookup+0x613: movzwl 0x4(%r15,%r14,1),%ebx ddb> show proc PROC (syz-executor) tid=250507 pid=16298 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=79, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a726a68,0xffff80002a727a08 process=0xffff807fffffb198 user=0xffff80003b0c8000, vmspace=0xfffff800760502e0 estcpu=29, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 59738 104117 57510 0 2 0x100000 sh 57510 12233 19117 0 3 0x10008a sigsusp sh 16298 523653 50034 0 2 0 syz-executor *16298 250507 50034 0 7 0x4000000 syz-executor 74557 96518 33529 0 3 0x80 fsleep syz-executor 74557 100471 33529 0 2 0x4000000 syz-executor 29698 212540 30701 0 2 0 syz-executor 29698 81107 30701 0 3 0x4000080 fsleep syz-executor 12750 407085 58115 0 2 0 syz-executor 12750 192818 58115 0 3 0x4000080 fsleep syz-executor 19117 85954 16798 0 3 0x82 wait syz-executor 16426 243496 1 0 3 0x100083 ttyin getty 30701 28280 16798 0 3 0x82 nanoslp syz-executor 60179 235323 16798 0 3 0x82 piperd syz-executor 50034 480260 16798 0 2 0xc82 syz-executor 33529 244952 16798 0 2 0xc82 syz-executor 58115 321063 16798 0 3 0x82 nanoslp syz-executor 16798 98903 1 0 3 0x82 nanoslp syz-executor 94672 365368 0 0 3 0x14200 bored smr 41658 353652 0 0 2 0x14200 zerothread 72648 127849 0 0 3 0x14200 aiodoned aiodoned 69739 378926 0 0 3 0x14200 syncer update 50185 504029 0 0 3 0x14200 cleaner cleaner 59541 242883 0 0 3 0x14200 reaper reaper 87421 414643 0 0 3 0x14200 pgdaemon pagedaemon 34878 213344 0 0 3 0x14200 bored viomb 3114 63177 0 0 3 0x40014200 acpi0 acpi0 69640 147380 0 0 2 0x14200 softnet0 87588 194419 0 0 3 0x14200 bored systqmp 14395 493634 0 0 3 0x14200 bored systq 61365 243490 0 0 3 0x40014200 tmoslp softclock 22120 69466 0 0 3 0x40014200 idle0 1 140472 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11022 12158K 12591K 166960K 12849 0 pcb 20 14K 16K 166960K 157 0 rtable 171 7K 9K 166960K 923 0 pf 29 13K 17K 166960K 134 0 ifaddr 28 5K 8K 166960K 120 0 ifgroup 35 1K 2K 166960K 138 0 sysctl 3 1K 9K 166960K 10 0 counters 30 17K 17K 166960K 60 0 ioctlops 0 0K 4K 166960K 310 0 iov 0 0K 16K 166960K 80 0 mount 1 1K 1K 166960K 1 0 log 1 0K 0K 166960K 5 0 vnodes 1397 88K 88K 166960K 2014 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 5 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 56 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 14 53K 109K 166960K 749 0 sigio 0 0K 0K 166960K 3 0 proc 20 25K 124K 166960K 961 0 subproc 63 3K 5K 166960K 262 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 93 0 in_multi 59 4K 7K 166960K 282 0 ether_multi 1 0K 0K 166960K 2 0 mrt 2 0K 0K 166960K 23 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 73 334K 334K 166960K 73 0 exec 0 0K 1K 166960K 651 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 105 74K 179K 166960K 7262 0 UVM aobj 7 2K 2K 166960K 9 0 pinsyscall 17 34K 96K 166960K 2242 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 24 0 NDP 8 0K 2K 166960K 82 0 temp 42 9108K 9171K 166960K 22980 0 kqueue 1 2K 31K 166960K 94 0 SYN cache 2 16K 16K 166960K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 82 0 82 1 0 1 1 0 8 1 rtentry 136 288 0 219 4 0 4 4 0 8 0 unpcb 144 621 0 619 6 3 3 4 0 8 2 syncache 336 5 0 5 2 1 1 1 0 8 1 tcpcb 736 105 0 102 1 0 1 1 0 8 0 arp 96 50 0 40 1 0 1 1 0 8 0 ipq 40 5 0 2 1 0 1 1 0 8 0 ipqe 40 9 0 6 1 0 1 1 0 8 0 inpcb 328 531 0 525 7 0 7 7 0 8 6 ip6q 72 2 0 0 1 0 1 1 0 8 0 ip6af 40 2 0 0 1 0 1 1 0 8 0 nd6 112 70 0 58 1 0 1 1 0 8 0 pkpcb 40 4 0 4 1 0 1 1 0 8 1 kcovpl 48 29 0 22 1 0 1 1 0 8 0 ppxss 1072 9 0 9 1 0 1 1 0 8 1 pppxif 1416 1 0 1 1 0 1 1 0 8 1 pfstscr 40 7 0 3 1 0 1 1 0 8 0 pfrktable 1344 4 0 1 1 0 1 1 0 8 0 pfsrclim 320 2 0 2 1 0 1 1 0 8 1 pfanchor 1288 2 0 1 1 0 1 1 0 8 0 pftag 88 2 0 1 1 0 1 1 0 8 0 pfstitem 24 4 0 0 1 0 1 1 0 8 0 pfstkey 128 8 0 4 1 0 1 1 0 8 0 pfstate 384 4 0 2 1 0 1 1 0 8 0 pfrule 1360 36 0 35 2 1 1 1 0 8 0 rttmr 136 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 1209 0 922 33 3 30 32 0 8 8 art_table 40 1211 0 922 6 0 6 6 0 8 1 art_node 32 288 0 226 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 0 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 72 53 0 43 1 0 1 1 0 8 0 shmpl 112 6 0 2 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 2242 0 755 94 0 94 94 0 8 0 ffsino 256 2243 0 756 94 0 94 94 0 8 0 nchpl 144 2941 0 1193 65 0 65 65 0 8 0 rtmask 32 1 0 1 1 0 1 1 0 8 1 vnodes 216 2857 0 0 159 0 159 159 0 8 0 namei 1024 10573 0 10572 2 1 1 2 0 8 0 pfiaddrpl 120 1 0 0 1 0 1 1 0 8 0 kstatmem 264 73 0 56 2 0 2 2 0 8 0 scsiplug 72 3 0 3 1 0 1 1 0 8 1 scxspl 216 17648 0 17648 9 7 2 8 1 8 2 plimitpl 152 97 0 88 1 0 1 1 0 8 0 sigapl 424 996 0 966 7 1 6 6 0 8 1 knotepl 120 16398 0 16381 17 8 9 10 0 8 7 kqueuepl 184 180 0 178 3 0 3 3 0 8 2 pipepl 304 270 0 243 5 0 5 5 0 8 2 fdescpl 448 983 0 966 5 1 4 5 0 8 0 filepl 120 4857 0 4702 12 1 11 11 0 8 4 lockfpl 104 211 0 209 2 0 2 2 0 8 1 lockfspl 48 101 0 99 1 0 1 1 0 8 0 sessionpl 144 94 0 91 1 0 1 1 0 8 0 pgrppl 48 127 0 117 1 0 1 1 0 8 0 ucredpl 104 433 0 430 1 0 1 1 0 8 0 zombiepl 144 967 0 966 2 1 1 1 0 8 0 processpl 1152 996 0 966 4 0 4 4 0 8 0 procpl 664 1539 0 1505 6 0 6 6 0 8 2 sosppl 176 5 0 5 1 0 1 1 0 8 1 sockpl 552 1254 0 1246 12 5 7 8 0 8 6 mcl64k 65536 24 0 23 2 1 1 1 0 8 0 mcl16k 16384 4 0 4 2 1 1 1 0 8 1 mcl12k 12288 2 0 2 1 0 1 1 0 8 1 mcl8k 8192 9 0 9 2 1 1 1 0 8 1 mcl4k 4096 3023 0 2965 15 7 8 14 0 8 0 mcl2k 2048 691 0 685 3 0 3 3 0 8 2 mtagpl 96 12 0 5 2 1 1 1 0 8 0 mbufpl 256 9890 0 9772 29 10 19 29 0 8 5 bufpl 272 7010 0 795 415 0 415 415 0 8 0 anonpl 24 161111 0 159772 64 1 63 63 0 88 37 amapchunkpl 152 22437 0 22169 28 1 27 27 0 158 15 amappl16 200 3129 0 3113 35 24 11 24 0 8 8 amappl15 192 1 0 1 1 1 0 1 0 8 0 amappl14 184 596 0 595 1 0 1 1 0 8 0 amappl13 176 145 0 144 1 0 1 1 0 8 0 amappl12 168 1289 0 1274 2 0 2 2 0 8 0 amappl11 160 5 0 5 1 1 0 1 0 8 0 amappl10 152 61 0 61 1 0 1 1 0 8 1 amappl9 144 274 0 274 1 0 1 1 0 8 1 amappl8 136 158 0 158 1 0 1 1 0 8 1 amappl7 128 191 0 189 1 0 1 1 0 8 0 amappl6 120 303 0 301 1 0 1 1 0 8 0 amappl5 112 107 0 107 1 0 1 1 0 8 1 amappl4 104 308 0 305 1 0 1 1 0 8 0 amappl3 96 4361 0 4301 4 0 4 4 0 8 0 amappl2 88 664 0 654 2 0 2 2 0 8 0 amappl1 80 13537 0 13432 13 1 12 13 0 8 6 amappl 88 6244 0 6153 4 0 4 4 0 92 0 uvmvnodes 80 108 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 6 0 6 1 1 0 1 0 8 0 dma128 128 255 0 255 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 8 0 2 1 0 1 1 0 8 0 uaddrrnd 24 983 0 966 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 983 0 966 1 0 1 1 0 8 0 vmmpekpl 168 9570 0 9530 3 0 3 3 0 8 0 vmmpepl 168 70859 0 70173 100 0 100 100 0 357 61 vmsppl 368 982 0 966 4 1 3 4 0 8 0 rwobjpl 40 22241 0 21853 16 1 15 15 0 8 3 pdppl 4096 1972 0 1932 116 74 42 82 0 8 2 pvpl 32 427874 0 424274 141 4 137 137 0 265 81 pmappl 216 982 0 966 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 829 0 104 22 0 22 22 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ufs_lookup() at ufs_lookup+0x613 sys/ufs/ufs/ufs_lookup.c:279 VOP_LOOKUP(fffff8004c331d88,ffff80003b0cd2c0,ffff80003b0cd2f0) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80003b0cd290) at vfs_lookup+0x94a sys/kern/vfs_lookup.c:580 namei(ffff80003b0cd290) at namei+0x7c3 sys/kern/vfs_lookup.c:250 vn_open(ffff80003b0cd290,3,0) at vn_open+0x178 sys/kern/vfs_vnops.c:146 doopenat(ffff80002a727760,ffffff9c,200000000000,2,0,0,2f24080ff1e7c62f) at doopenat+0x352 sys/kern/vfs_syscalls.c:1162 sys_open(ffff80002a727760,ffff80003b0cd530,ffff80003b0cd480) at sys_open+0x59 sys/kern/vfs_syscalls.c:1064 syscall(ffff80003b0cd530) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003b0cd530) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xba795707570, count: -9 ddb> machine ddbcpu 1 No such command ddb> trace ufs_lookup() at ufs_lookup+0x613 sys/ufs/ufs/ufs_lookup.c:279 VOP_LOOKUP(fffff8004c331d88,ffff80003b0cd2c0,ffff80003b0cd2f0) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80003b0cd290) at vfs_lookup+0x94a sys/kern/vfs_lookup.c:580 namei(ffff80003b0cd290) at namei+0x7c3 sys/kern/vfs_lookup.c:250 vn_open(ffff80003b0cd290,3,0) at vn_open+0x178 sys/kern/vfs_vnops.c:146 doopenat(ffff80002a727760,ffffff9c,200000000000,2,0,0,2f24080ff1e7c62f) at doopenat+0x352 sys/kern/vfs_syscalls.c:1162 sys_open(ffff80002a727760,ffff80003b0cd530,ffff80003b0cd480) at sys_open+0x59 sys/kern/vfs_syscalls.c:1064 syscall(ffff80003b0cd530) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003b0cd530) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xba795707570, count: -9 ddb>