uvm_fault(0xffffffff83a1e8b0, 0xffff800028ab2004, 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 *497461 83988 0 0 0x4000000 0 syz-executor ufs_lookup() at ufs_lookup+0x613 sys/ufs/ufs/ufs_lookup.c:279 VOP_LOOKUP(fffffd805d5486e8,ffff80003c90dc58,ffff80003c90dc88) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80003c90dc28) at vfs_lookup+0x961 sys/kern/vfs_lookup.c:567 namei(ffff80003c90dc28) at namei+0x7ca sys/kern/vfs_lookup.c:250 domknodat(ffff80002a78d4e0,ffffff9c,200000000280,2000,5d4a) at domknodat+0xb4 sys/kern/vfs_syscalls.c:1611 syscall(ffff80003c90de10) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c90de10) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd785b602760, 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> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic *cpu0: uvm_fault(0xffffffff83a1e8b0, 0xffff800028ab2004, 0, 1) -> d ddb> trace ufs_lookup() at ufs_lookup+0x613 sys/ufs/ufs/ufs_lookup.c:279 VOP_LOOKUP(fffffd805d5486e8,ffff80003c90dc58,ffff80003c90dc88) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80003c90dc28) at vfs_lookup+0x961 sys/kern/vfs_lookup.c:567 namei(ffff80003c90dc28) at namei+0x7ca sys/kern/vfs_lookup.c:250 domknodat(ffff80002a78d4e0,ffffff9c,200000000280,2000,5d4a) at domknodat+0xb4 sys/kern/vfs_syscalls.c:1611 syscall(ffff80003c90de10) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c90de10) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd785b602760, count: -7 ddb> show registers rdi 0 rsi 0 rbp 0xffff80003c90d9c0 rbx 0 rdx 0 rcx 0xffffffff rax 0xffff80002a78d4e0 r8 0xffffffffffffffff r9 0xfffffd8007ffd410 r10 0xcc9b32fd40dfcfd8 r11 0x6c44cc6c98389bc2 r12 0xfffffd80736b0118 r13 0 r14 0 r15 0xffff800028ab2000 rip 0xffffffff819fa433 ufs_lookup+0x613 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c90d8d0 ss 0x10 ufs_lookup+0x613: movzwl 0x4(%r15,%r14,1),%ebx ddb> show proc PROC (syz-executor) tid=497461 pid=83988 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a78cd18,0xffffffff839c3610 process=0xffff80003a4ea898 user=0xffff80003c908000, vmspace=0xfffffd806cb2a180 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 83988 333454 40233 0 2 0 syz-executor *83988 497461 40233 0 7 0x4000000 syz-executor 41972 463045 1882 0 2 0 syz-executor 41972 343121 1882 0 3 0x4000080 fsleep syz-executor 40531 319506 33384 0 2 0x82000 syz-executor 40531 177463 33384 0 3 0x4082000 smrbar syz-executor 40531 378723 33384 0 3 0x4002000 suspend syz-executor 40531 503825 33384 0 4 0x4082000 syz-executor 28559 250849 31757 0 2 0 syz-executor 28559 221345 31757 0 3 0x4000080 fsleep syz-executor 41400 260481 54723 -1 3 0x90 nanoslp syz-executor 41400 111050 54723 -1 3 0x4000090 netcon syz-executor 41400 395291 54723 -1 3 0x4000090 fsleep syz-executor 98119 359396 56799 0 2 0xc80 syz-executor 98119 80776 56799 0 3 0x4000080 nanoslp syz-executor 75668 357040 73182 0 2 0xc80 syz-executor 75668 23529 73182 0 3 0x4000080 fsleep syz-executor 75668 73065 73182 0 3 0x4000080 fsleep syz-executor 75668 105632 73182 0 3 0x4000080 ttyin syz-executor 99125 380394 16455 0 2 0xc82 syz-executor 56799 458332 16455 0 2 0xc82 syz-executor 40233 124209 16455 0 3 0x82 nanoslp syz-executor 1882 84243 16455 0 3 0x82 nanoslp syz-executor 54723 83399 16455 0 2 0xc82 syz-executor 73182 151339 16455 0 3 0x82 nanoslp syz-executor 33384 287810 16455 0 3 0x82 nanoslp syz-executor 31757 25794 16455 0 3 0x82 nanoslp syz-executor 16455 227157 27518 0 3 0x82 kqread syz-executor 27518 380214 95332 0 3 0x10008a sigsusp ksh 95332 299993 28047 0 3 0x98 kqread sshd-session 28047 358925 47813 0 3 0x92 kqread sshd-session 30726 285184 1 0 3 0x100083 ttyin getty 47813 300181 1 0 3 0x88 kqread sshd 21567 375398 63366 73 3 0x1100090 kqread syslogd 63366 391438 1 0 3 0x100082 sbwait syslogd 49253 132237 1 0 3 0x100080 kqread resolvd 57090 107865 7204 77 3 0x100092 kqread dhcpleased 91329 390941 7204 77 3 0x100092 kqread dhcpleased 7204 50039 1 0 3 0x80 kqread dhcpleased 6065 396506 0 0 3 0x14200 bored smr 37602 121129 0 0 2 0x14200 zerothread 66466 119575 0 0 3 0x14200 aiodoned aiodoned 13127 274806 0 0 3 0x14200 syncer update 74790 61086 0 0 3 0x14200 cleaner cleaner 64194 505494 0 0 3 0x14200 reaper reaper 98355 504841 0 0 3 0x14200 pgdaemon pagedaemon 34429 108473 0 0 3 0x14200 bored viomb 87254 86870 0 0 3 0x40014200 acpi0 acpi0 55403 325147 0 0 3 0x14200 bored softnet0 43357 261321 0 0 3 0x14200 smrbar systqmp 85911 101314 0 0 3 0x14200 bored systq 54608 26248 0 0 2 0x40014200 softclock 94484 445457 0 0 3 0x40014200 idle0 1 192178 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 11045 12104K 12294K 166960K 12426 0 pcb 18 12K 12K 166960K 65 0 rtable 233 7K 7K 166960K 426 0 pf 37 14K 16K 166960K 64 0 ifaddr 45 7K 8K 166960K 62 0 ifgroup 61 2K 2K 166960K 92 0 sysctl 1 1K 9K 166960K 6 0 counters 39 18K 18K 166960K 112 0 ioctlops 1 1K 4K 166960K 170 0 iov 0 0K 16K 166960K 8 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1327 83K 84K 166960K 1569 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 4 0 VM map 2 1K 1K 166960K 2 0 sem 7 0K 0K 166960K 74 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 97K 166960K 367 0 sigio 0 0K 0K 166960K 2 0 proc 60 59K 124K 166960K 546 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 41 0 in_multi 97 7K 7K 166960K 124 0 ether_multi 1 0K 0K 166960K 6 0 mrt 0 0K 0K 166960K 11 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 67 307K 307K 166960K 67 0 exec 0 0K 1K 166960K 391 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 230 143K 160K 166960K 4942 0 UVM aobj 73 3K 4K 166960K 74 0 pinsyscall 39 78K 96K 166960K 1484 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 0K 166960K 18 0 NDP 14 0K 2K 166960K 41 0 temp 42 9067K 9174K 166960K 14498 0 kqueue 14 22K 34K 166960K 81 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 51 0 48 1 0 1 1 0 8 0 rtentry 136 128 0 24 4 0 4 4 0 8 0 unpcb 144 134 0 117 1 0 1 1 0 8 0 syncache 336 7 0 7 1 0 1 1 0 8 1 tcpqe 32 1 0 1 1 0 1 1 0 8 1 tcpcb 736 202 0 195 7 0 7 7 0 8 6 arp 96 21 0 2 1 0 1 1 0 8 0 inpcb 328 500 0 488 7 0 7 7 0 8 5 ip6q 72 1 0 0 1 0 1 1 0 8 0 ip6af 40 1 0 0 1 0 1 1 0 8 0 nd6 112 29 0 3 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 0 1 1 0 8 1 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1072 72 0 68 1 0 1 1 0 8 0 pppxif 1416 67 0 65 1 0 1 1 0 8 0 pfstscr 40 2 0 2 1 0 1 1 0 8 1 pfrktable 1344 3 0 3 1 0 1 1 0 8 1 pfanchor 1288 1 0 1 1 0 1 1 0 8 1 pfstitem 24 2 0 2 1 0 1 1 0 8 1 pfstkey 128 4 0 4 1 0 1 1 0 8 1 pfstate 384 2 0 2 1 0 1 1 0 8 1 pfrule 1360 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 256 518 0 85 29 0 29 29 0 8 1 art_table 40 520 0 85 5 0 5 5 0 8 0 art_node 32 128 0 34 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 1 1 0 1 1 0 8 1 semapl 112 70 0 65 1 0 1 1 0 8 0 shmpl 112 71 0 1 2 0 2 2 0 8 0 dirhash 1024 24 0 7 3 0 3 3 0 8 0 dino2pl 256 2000 0 540 92 0 92 92 0 8 0 ffsino 256 2000 0 540 92 0 92 92 0 8 0 nchpl 144 2490 0 789 64 0 64 64 0 8 0 vnodes 216 2211 0 0 123 0 123 123 0 8 0 namei 1024 8021 0 8020 2 0 2 2 0 8 1 pfiaddrpl 120 1 0 1 1 0 1 1 0 8 1 kstatmem 264 45 0 16 2 0 2 2 0 8 0 scsiplug 72 2 0 2 1 0 1 1 0 8 1 scxspl 216 13049 0 13049 8 0 8 8 1 8 8 plimitpl 152 123 0 105 1 0 1 1 0 8 0 sigapl 424 657 0 614 6 0 6 6 0 8 1 knotepl 120 14659 0 14610 18 8 10 18 0 8 6 kqueuepl 184 143 0 99 3 0 3 3 0 8 0 pipepl 304 130 0 103 3 0 3 3 0 8 0 fdescpl 448 644 0 614 5 0 5 5 0 8 1 filepl 120 3111 0 2855 11 0 11 11 0 8 2 lockfpl 104 101 0 97 1 0 1 1 0 8 0 lockfspl 48 48 0 44 1 0 1 1 0 8 0 sessionpl 144 58 0 50 1 0 1 1 0 8 0 pgrppl 48 70 0 54 1 0 1 1 0 8 0 ucredpl 104 261 0 249 1 0 1 1 0 8 0 zombiepl 144 615 0 614 1 0 1 1 0 8 0 processpl 1152 657 0 614 4 0 4 4 0 8 0 procpl 664 1030 0 975 6 0 6 6 0 8 1 sosppl 176 1 0 1 1 0 1 1 0 8 1 sockpl 552 693 0 661 8 0 8 8 0 8 5 mcl64k 65536 18 0 18 1 0 1 1 0 8 1 mcl16k 16384 8 0 8 1 0 1 1 0 8 1 mcl12k 12288 2 0 2 1 0 1 1 0 8 1 mcl8k 8192 9 0 9 1 0 1 1 0 8 1 mcl4k 4096 2840 0 2790 15 0 15 15 0 8 8 mcl2k 2048 377 0 375 1 0 1 1 0 8 0 mtagpl 96 8 0 5 1 0 1 1 0 8 0 mbufpl 256 6856 0 6695 12 0 12 12 0 8 1 bufpl 280 7118 0 904 444 0 444 444 0 8 0 anonpl 24 130240 0 127011 55 0 55 55 0 187 22 amapchunkpl 152 15418 0 14922 36 0 36 36 0 158 15 amappl16 200 2798 0 2772 17 4 13 17 0 8 8 amappl15 192 2 0 2 1 0 1 1 0 8 1 amappl14 184 421 0 420 1 0 1 1 0 8 0 amappl13 176 116 0 106 1 0 1 1 0 8 0 amappl12 168 883 0 854 2 0 2 2 0 8 0 amappl11 160 7 0 7 1 0 1 1 0 8 1 amappl10 152 74 0 63 1 0 1 1 0 8 0 amappl9 144 257 0 257 1 0 1 1 0 8 1 amappl8 136 105 0 104 1 0 1 1 0 8 0 amappl7 128 161 0 150 1 0 1 1 0 8 0 amappl6 120 240 0 238 1 0 1 1 0 8 0 amappl5 112 92 0 84 1 0 1 1 0 8 0 amappl4 104 259 0 243 1 0 1 1 0 8 0 amappl3 96 2846 0 2732 4 0 4 4 0 8 0 amappl2 88 532 0 475 2 0 2 2 0 8 0 amappl1 80 10369 0 9821 15 0 15 15 0 8 3 amappl 88 4195 0 4028 5 0 5 5 0 92 0 uvmvnodes 80 110 0 0 3 0 3 3 0 8 0 dma4096 4096 1 0 1 1 0 1 1 0 8 1 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 0 1 1 0 8 1 dma128 128 253 0 253 1 0 1 1 0 8 1 dma64 64 7 0 7 1 0 1 1 0 8 1 dma32 32 7 0 7 1 0 1 1 0 8 1 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 73 0 1 2 0 2 2 0 8 0 uaddrrnd 24 644 0 614 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 644 0 614 1 0 1 1 0 8 0 vmmpekpl 168 6752 0 6720 2 0 2 2 0 8 0 vmmpepl 168 49245 0 47419 93 0 93 93 0 357 13 vmsppl 368 643 0 614 4 0 4 4 0 8 1 rwobjpl 40 16996 0 15966 13 0 13 13 0 8 0 pdppl 4096 1294 0 1228 104 38 66 82 0 8 0 pvpl 32 317328 0 308444 143 0 143 143 0 265 45 pmappl 216 643 0 614 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 376 0 38 10 0 10 10 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(fffffd805d5486e8,ffff80003c90dc58,ffff80003c90dc88) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80003c90dc28) at vfs_lookup+0x961 sys/kern/vfs_lookup.c:567 namei(ffff80003c90dc28) at namei+0x7ca sys/kern/vfs_lookup.c:250 domknodat(ffff80002a78d4e0,ffffff9c,200000000280,2000,5d4a) at domknodat+0xb4 sys/kern/vfs_syscalls.c:1611 syscall(ffff80003c90de10) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c90de10) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd785b602760, count: -7 ddb> machine ddbcpu 1 No such command ddb> trace ufs_lookup() at ufs_lookup+0x613 sys/ufs/ufs/ufs_lookup.c:279 VOP_LOOKUP(fffffd805d5486e8,ffff80003c90dc58,ffff80003c90dc88) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80003c90dc28) at vfs_lookup+0x961 sys/kern/vfs_lookup.c:567 namei(ffff80003c90dc28) at namei+0x7ca sys/kern/vfs_lookup.c:250 domknodat(ffff80002a78d4e0,ffffff9c,200000000280,2000,5d4a) at domknodat+0xb4 sys/kern/vfs_syscalls.c:1611 syscall(ffff80003c90de10) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c90de10) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd785b602760, count: -7