uvm_fault(0xffffffff83a60f60, 0xffff800029272004, 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 *430308 24639 0 0 0x4000000 0 syz-executor ufs_lookup() at ufs_lookup+0x613 sys/ufs/ufs/ufs_lookup.c:279 VOP_LOOKUP(fffff5006c84cbf8,ffff80003c96bc88,ffff80003c96bcb8) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80003c96bc58) at vfs_lookup+0x94a sys/kern/vfs_lookup.c:580 namei(ffff80003c96bc58) at namei+0x7c3 sys/kern/vfs_lookup.c:250 dorenameat(ffff8000338b9248,ffffff9c,2000000000c0,ffffff9c,200000000100) at dorenameat+0x91 sys/kern/vfs_syscalls.c:2939 syscall(ffff80003c96be40) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c96be40) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x994c4b0e0, 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(0xffffffff83a60f60, 0xffff800029272004, 0, 1) -> d ddb> trace ufs_lookup() at ufs_lookup+0x613 sys/ufs/ufs/ufs_lookup.c:279 VOP_LOOKUP(fffff5006c84cbf8,ffff80003c96bc88,ffff80003c96bcb8) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80003c96bc58) at vfs_lookup+0x94a sys/kern/vfs_lookup.c:580 namei(ffff80003c96bc58) at namei+0x7c3 sys/kern/vfs_lookup.c:250 dorenameat(ffff8000338b9248,ffffff9c,2000000000c0,ffffff9c,200000000100) at dorenameat+0x91 sys/kern/vfs_syscalls.c:2939 syscall(ffff80003c96be40) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c96be40) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x994c4b0e0, count: -7 ddb> show registers rdi 0 rsi 0x2 rbp 0xffff80003c96b9e0 rbx 0 rdx 0 rcx 0xffffffff rax 0xffff8000338b9248 r8 0xffffffffffffffff r9 0xfffff50007ffd680 r10 0xe136a5ac7b44ba78 r11 0x69268de60e189af9 r12 0xfffff5006a3aeaa8 r13 0 r14 0 r15 0xffff800029272000 rip 0xffffffff8321a153 ufs_lookup+0x613 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c96b8f0 ss 0x10 ufs_lookup+0x613: movzwl 0x4(%r15,%r14,1),%ebx ddb> show proc PROC (syz-executor) tid=430308 pid=24639 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000338b87e8,0xffff80003c8fad38 process=0xffff800045ff56a0 user=0xffff80003c966000, vmspace=0xfffff5006d117018 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 24639 250938 20338 0 2 0 syz-executor *24639 430308 20338 0 7 0x4000000 syz-executor 24639 204957 20338 0 3 0x4000080 fsleep syz-executor 55476 358571 66273 0 2 0xc80 syz-executor 55476 365532 66273 0 3 0x4000080 sbwait syz-executor 55476 52161 66273 0 3 0x4000080 fsleep syz-executor 29172 402727 24486 0 3 0x80 nanoslp syz-executor 29172 193240 24486 0 3 0x4000080 kqread syz-executor 29172 443008 24486 0 3 0x4000080 fsleep syz-executor 56642 81090 0 0 3 0x14280 nfsidl nfsio 15639 154564 0 0 3 0x14280 nfsidl nfsio 27226 179436 0 0 3 0x14280 nfsidl nfsio 62169 8536 0 0 3 0x14280 nfsidl nfsio 37220 509096 0 0 3 0x14280 nfsidl nfsio 71319 145969 0 0 3 0x14280 nfsidl nfsio 86051 98488 0 0 3 0x14280 nfsidl nfsio 86550 43189 0 0 3 0x14280 nfsidl nfsio 65968 128362 0 0 3 0x14280 nfsidl nfsio 45243 57901 0 0 3 0x14280 nfsidl nfsio 36531 99673 0 0 3 0x14280 nfsidl nfsio 89159 104012 0 0 3 0x14280 nfsidl nfsio 96654 81404 0 0 3 0x14280 nfsidl nfsio 48408 387759 0 0 3 0x14280 nfsidl nfsio 73578 468899 0 0 3 0x14280 nfsidl nfsio 40107 369489 0 0 3 0x14280 nfsidl nfsio 77051 213070 0 0 3 0x14280 nfsidl nfsio 98011 318248 0 0 3 0x14280 nfsidl nfsio 83861 412574 0 0 3 0x14280 nfsidl nfsio 75715 328248 0 0 3 0x14280 nfsidl nfsio 30181 122435 1 0 3 0x80 nanoslp init 20338 339437 30499 0 2 0xc82 syz-executor 66273 359781 30499 0 2 0xc82 syz-executor 24486 328276 30499 0 3 0x82 nanoslp syz-executor 22795 276650 30499 0 3 0x82 wait syz-executor 30499 60353 1 0 3 0x82 wait syz-executor 58698 75302 67865 0 3 0x98 kqread sshd-session 67865 257028 1 0 3 0x92 kqread sshd-session 99169 458071 1 73 3 0x1100090 kqread syslogd 10487 215760 0 0 3 0x14200 bored smr 10096 386478 0 0 2 0x14200 zerothread 76142 242088 0 0 3 0x14200 aiodoned aiodoned 20716 54705 0 0 3 0x14200 syncer update 80322 366326 0 0 3 0x14200 cleaner cleaner 65178 336146 0 0 3 0x14200 reaper reaper 42999 523633 0 0 3 0x14200 pgdaemon pagedaemon 47819 84663 0 0 3 0x14200 bored viomb 97640 375196 0 0 3 0x40014200 acpi0 acpi0 98037 146619 0 0 3 0x14200 bored softnet0 40178 247881 0 0 3 0x14200 smrbar systqmp 77420 76512 0 0 3 0x14200 bored systq 3032 204052 0 0 3 0x40014200 tmoslp softclock 22012 522497 0 0 3 0x40014200 idle0 1 486504 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 11051 12227K 13345K 166960K 13205 0 pcb 17 14K 16K 166960K 210 0 rtable 217 10K 10K 166960K 584 0 pf 35 14K 20K 166960K 114 0 ifaddr 36 6K 7K 166960K 128 0 ifgroup 50 2K 2K 166960K 94 0 sysctl 4 1K 9K 166960K 12 0 counters 33 17K 18K 166960K 50 0 ioctlops 0 0K 4K 166960K 199 0 iov 0 0K 16K 166960K 21 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1422 89K 89K 166960K 1937 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 9 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 25 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 13 45K 93K 166960K 577 0 sigio 0 0K 0K 166960K 7 0 proc 11 17K 83K 166960K 554 0 subproc 63 3K 4K 166960K 74 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 62 0 in_multi 69 5K 7K 166960K 123 0 ether_multi 1 0K 0K 166960K 1 0 mrt 2 0K 0K 166960K 15 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 169 758K 758K 166960K 169 0 exec 0 0K 1K 166960K 477 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 125 79K 161K 166960K 6927 0 UVM aobj 78 5K 7K 166960K 82 0 pinsyscall 20 40K 94K 166960K 1682 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 2 0K 0K 166960K 63 0 NDP 11 0K 2K 166960K 43 0 temp 43 9113K 9177K 166960K 16609 0 kqueue 7 11K 28K 166960K 110 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 54 0 54 1 0 1 1 0 8 1 rtentry 136 200 0 111 4 0 4 4 0 8 0 unpcb 144 497 0 490 8 0 8 8 0 8 7 syncache 336 7 0 7 1 0 1 1 0 8 1 tcpcb 736 121 0 118 1 0 1 1 0 8 0 arp 96 23 0 5 1 0 1 1 0 8 0 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 4 0 1 1 0 1 1 0 8 0 inpcb 328 700 0 695 7 0 7 7 0 8 5 nd6 112 31 0 16 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 0 1 1 0 8 1 kcovpl 48 8 0 1 1 0 1 1 0 8 0 ppxss 1072 11 0 11 1 0 1 1 0 8 1 pppxif 1416 1 0 1 1 0 1 1 0 8 1 pfstscr 40 12 0 6 1 0 1 1 0 8 0 pfosfp 40 2 0 1 1 0 1 1 0 8 0 pfosfpen 112 2 0 1 1 0 1 1 0 8 0 pfrktable 1344 5 0 2 1 0 1 1 0 8 0 pfsrclim 320 1 0 1 1 0 1 1 0 8 1 pfanchor 1288 4 0 0 1 0 1 1 0 8 0 pftag 88 2 0 0 1 0 1 1 0 8 0 pfqueue 320 1 0 1 1 0 1 1 0 8 1 pfstitem 24 6 0 2 1 0 1 1 0 8 0 pfstkey 128 14 0 11 1 0 1 1 0 8 0 pfstate 384 7 0 4 1 0 1 1 0 8 0 pfrule 1360 6 0 4 1 0 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 256 551 0 206 32 0 32 32 0 8 5 art_table 40 553 0 206 6 0 6 6 0 8 0 art_node 32 200 0 118 2 0 2 2 0 8 1 sysvmsgpl 40 9 0 5 1 0 1 1 0 8 0 semapl 72 21 0 11 1 0 1 1 0 8 0 shmpl 112 79 0 4 3 0 3 3 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 2473 0 1021 92 0 92 92 0 8 0 ffsino 256 2473 0 1021 92 0 92 92 0 8 0 nchpl 144 3296 0 1597 64 0 64 64 0 8 0 rtmask 32 1 0 1 1 0 1 1 0 8 1 vnodes 216 2903 0 0 162 0 162 162 0 8 0 namei 1024 10992 0 10991 2 0 2 2 0 8 1 pfiaddrpl 120 2 0 0 1 0 1 1 0 8 0 kstatmem 264 51 0 28 2 0 2 2 0 8 0 scsiplug 72 1 0 1 1 0 1 1 0 8 1 scxspl 216 17428 0 17428 8 0 8 8 1 8 8 plimitpl 152 154 0 142 1 0 1 1 0 8 0 sigapl 424 894 0 842 7 0 7 7 0 8 0 knotepl 120 19152 0 19123 24 14 10 17 0 8 7 kqueuepl 184 213 0 208 4 0 4 4 0 8 3 pipepl 304 180 0 153 5 0 5 5 0 8 2 fdescpl 448 861 0 843 5 0 5 5 0 8 1 filepl 120 5447 0 5279 14 0 14 14 0 8 5 lockfpl 104 393 0 392 2 0 2 2 0 8 1 lockfspl 48 170 0 169 1 0 1 1 0 8 0 sessionpl 144 173 0 169 1 0 1 1 0 8 0 pgrppl 48 186 0 174 1 0 1 1 0 8 0 ucredpl 104 834 0 827 1 0 1 1 0 8 0 zombiepl 144 847 0 842 1 0 1 1 0 8 0 processpl 1152 894 0 842 5 0 5 5 0 8 0 procpl 664 1565 0 1507 7 0 7 7 0 8 0 sockpl 552 1267 0 1255 16 6 10 16 0 8 8 mcl64k 65536 14 0 14 1 0 1 1 0 8 1 mcl9k128 9344 38 0 38 1 0 1 1 0 8 1 mcl8k 8192 8 0 8 1 0 1 1 0 8 1 mcl4k 4096 3136 0 3080 16 1 15 16 0 8 7 mcl2k 2048 492 0 491 2 0 2 2 0 8 1 mtagpl 96 9 0 6 1 0 1 1 0 8 0 mbufpl 256 8671 0 8525 19 0 19 19 0 8 5 bufpl 272 7354 0 1138 415 0 415 415 0 8 0 anonpl 24 158795 0 156840 60 0 60 60 0 187 24 amapchunkpl 152 22825 0 22523 32 0 32 32 0 158 9 amappl16 200 2671 0 2651 16 0 16 16 0 8 9 amappl15 192 4 0 4 1 0 1 1 0 8 1 amappl14 184 409 0 409 1 0 1 1 0 8 1 amappl13 176 139 0 135 1 0 1 1 0 8 0 amappl12 168 1104 0 1088 2 0 2 2 0 8 0 amappl11 160 8 0 8 1 0 1 1 0 8 1 amappl10 152 60 0 58 1 0 1 1 0 8 0 amappl9 144 273 0 273 1 0 1 1 0 8 1 amappl8 136 94 0 94 1 0 1 1 0 8 1 amappl7 128 143 0 137 1 0 1 1 0 8 0 amappl6 120 149 0 146 1 0 1 1 0 8 0 amappl5 112 94 0 90 1 0 1 1 0 8 0 amappl4 104 263 0 256 1 0 1 1 0 8 0 amappl3 96 4290 0 4228 4 0 4 4 0 8 1 amappl2 88 521 0 497 2 0 2 2 0 8 0 amappl1 80 11948 0 11680 13 0 13 13 0 8 2 amappl 88 6115 0 6011 5 0 5 5 0 92 1 uvmvnodes 80 117 0 0 3 0 3 3 0 8 0 dma8192 8192 1 0 1 1 0 1 1 0 8 1 dma4096 4096 1 0 1 1 0 1 1 0 8 1 dma2048 2048 1 0 1 1 0 1 1 0 8 1 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma512 512 2 0 2 1 0 1 1 0 8 1 dma256 256 7 0 7 1 0 1 1 0 8 1 dma128 128 253 0 253 1 0 1 1 0 8 1 dma64 64 6 0 6 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 81 0 4 2 0 2 2 0 8 0 uaddrrnd 24 861 0 843 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 861 0 843 1 0 1 1 0 8 0 vmmpekpl 168 8472 0 8431 3 0 3 3 0 8 0 vmmpepl 168 61940 0 60959 80 0 80 80 0 357 15 vmsppl 368 860 0 843 4 0 4 4 0 8 1 rwobjpl 40 19473 0 18872 11 0 11 11 0 8 0 pdppl 4096 1728 0 1686 96 44 52 80 0 8 10 pvpl 32 409505 0 404334 133 0 133 133 0 265 49 pmappl 216 860 0 843 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 791 0 45 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(fffff5006c84cbf8,ffff80003c96bc88,ffff80003c96bcb8) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80003c96bc58) at vfs_lookup+0x94a sys/kern/vfs_lookup.c:580 namei(ffff80003c96bc58) at namei+0x7c3 sys/kern/vfs_lookup.c:250 dorenameat(ffff8000338b9248,ffffff9c,2000000000c0,ffffff9c,200000000100) at dorenameat+0x91 sys/kern/vfs_syscalls.c:2939 syscall(ffff80003c96be40) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c96be40) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x994c4b0e0, 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(fffff5006c84cbf8,ffff80003c96bc88,ffff80003c96bcb8) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80003c96bc58) at vfs_lookup+0x94a sys/kern/vfs_lookup.c:580 namei(ffff80003c96bc58) at namei+0x7c3 sys/kern/vfs_lookup.c:250 dorenameat(ffff8000338b9248,ffffff9c,2000000000c0,ffffff9c,200000000100) at dorenameat+0x91 sys/kern/vfs_syscalls.c:2939 syscall(ffff80003c96be40) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c96be40) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x994c4b0e0, count: -7