login: uvm_fault(0xffffffff83565530, 0xffff800029de200c, 0, 1) -> d kernel: page fault trap, code=0 Stopped at ufs_direnter+0x23c: movl 0(%r15),%r14d TID PID UID PRFLAGS PFLAGS CPU COMMAND *519562 80111 0 0x2 0 0 syz-executor ufs_direnter(fffffd80776762c0,fffffd805e9f10f8,ffff80002a926fd0,ffff80002a9272f0,fffffd806a4f9d20) at ufs_direnter+0x23c sys/ufs/ufs/ufs_lookup.c:764 ufs_mkdir(ffff80002a927160) at ufs_mkdir+0x60f sys/ufs/ufs/ufs_vnops.c:1179 VOP_MKDIR(fffffd80776762c0,ffff80002a9272c0,ffff80002a9272f0,ffff80002a9271f0) at VOP_MKDIR+0x102 sys/kern/vfs_vops.c:394 domkdirat(ffff80002a85a540,ffffff9c,70a614239d20,1ff) at domkdirat+0x179 sys/kern/vfs_syscalls.c:3102 syscall(ffff80002a927470) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x70a614239dc0, count: 9 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(0xffffffff83565530, 0xffff800029de200c, 0, 1) -> d ddb> trace ufs_direnter(fffffd80776762c0,fffffd805e9f10f8,ffff80002a926fd0,ffff80002a9272f0,fffffd806a4f9d20) at ufs_direnter+0x23c sys/ufs/ufs/ufs_lookup.c:764 ufs_mkdir(ffff80002a927160) at ufs_mkdir+0x60f sys/ufs/ufs/ufs_vnops.c:1179 VOP_MKDIR(fffffd80776762c0,ffff80002a9272c0,ffff80002a9272f0,ffff80002a9271f0) at VOP_MKDIR+0x102 sys/kern/vfs_vops.c:394 domkdirat(ffff80002a85a540,ffffff9c,70a614239d20,1ff) at domkdirat+0x179 sys/kern/vfs_syscalls.c:3102 syscall(ffff80002a927470) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x70a614239dc0, count: -6 ddb> show registers rdi 0 rsi 0 rbp 0xffff80002a926fc0 rbx 0xfffffd805e3324e0 rdx 0 rcx 0xfffffd805cf98a48 rax 0xffff80002a85a540 r8 0xffffffffffffffff r9 0 r10 0x33d451612cbe3018 r11 0x5354c7064e1cc40a r12 0xfffffd806e5cd800 r13 0xfffffd805e9f10f8 r14 0x200 r15 0xffff800029de200c rip 0xffffffff821465fc ufs_direnter+0x23c cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002a926f10 ss 0x10 ufs_direnter+0x23c: movl 0(%r15),%r14d ddb> show proc PROC (syz-executor) tid=519562 pid=80111 tcnt=1 stat=onproc flags process=2 proc=0 runpri=17, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a85a030,0xffff80002a882028 process=0xffff80002a99a6f8 user=0xffff80002a922000, vmspace=0xfffffd806c1e6178 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=3, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 61477 97465 27871 0 2 0 syz-executor 61477 483304 27871 0 2 0x4000000 syz-executor 48473 89707 23008 0 2 0 syz-executor 48473 473504 23008 0 3 0x4000080 ttyout syz-executor 19779 70917 39539 0 2 0 syz-executor 19779 341359 39539 0 2 0x4000000 syz-executor 4876 321751 82521 0 2 0x1000000 syz-executor 4876 45106 82521 0 3 0x5000080 fsleep syz-executor 58755 515446 76788 0 2 0 syz-executor 58755 440195 76788 0 3 0x4000080 kqpoll syz-executor 37576 17391 39019 0 2 0x1000480 syz-executor 37576 435706 39019 0 3 0x5000080 sbwait syz-executor 37576 295305 39019 0 3 0x5000080 fsleep syz-executor 69656 46297 37055 0 2 0x10 syz-executor 69656 142833 37055 0 3 0x4000090 fsleep syz-executor 69846 137765 1 0 3 0x100083 ttyin getty *80111 519562 78279 0 7 0x2 syz-executor 39539 401698 78279 0 2 0x482 syz-executor 39019 298566 78279 0 2 0x482 syz-executor 37055 379328 78279 0 2 0x482 syz-executor 76788 179738 78279 0 2 0x482 syz-executor 67674 234131 0 0 3 0x14200 bored sosplice 82521 372626 78279 0 2 0x482 syz-executor 23008 321328 78279 0 2 0x482 syz-executor 27871 271372 78279 0 2 0x482 syz-executor 78279 521506 24405 0 2 0x2 syz-executor 24405 318527 31763 0 3 0x10008a sigsusp ksh 31763 90475 27018 0 3 0x98 kqread sshd-session 27018 401547 10352 0 3 0x92 kqread sshd-session 10352 85838 1 0 3 0x88 kqread sshd 4822 379993 55763 73 3 0x1100090 kqread syslogd 55763 347406 1 0 3 0x100082 sbwait syslogd 81848 182571 1 0 3 0x100080 kqread resolvd 23575 138002 85670 77 3 0x100092 kqread dhcpleased 36913 439099 85670 77 3 0x100092 kqread dhcpleased 85670 124391 1 0 3 0x80 kqread dhcpleased 95781 307635 0 0 3 0x14200 bored smr 23802 421873 0 0 2 0x14200 zerothread 57101 334711 0 0 3 0x14200 aiodoned aiodoned 45325 326434 0 0 3 0x14200 syncer update 93726 21278 0 0 3 0x14200 cleaner cleaner 65522 43931 0 0 3 0x14200 reaper reaper 65478 185706 0 0 3 0x14200 pgdaemon pagedaemon 94366 90477 0 0 3 0x14200 bored viomb 87567 299636 0 0 3 0x40014200 acpi0 acpi0 17551 104910 0 0 3 0x14200 bored softnet3 21942 80356 0 0 3 0x14200 bored softnet2 83359 115498 0 0 3 0x14200 bored softnet1 96950 340073 0 0 3 0x14200 bored softnet0 54213 135889 0 0 3 0x14200 bored systqmp 57292 406483 0 0 3 0x14200 bored systq 42797 466828 0 0 2 0x40014200 softclock 33334 394224 0 0 3 0x40014200 idle0 1 175375 0 0 3 0x80082 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 10205 11060K 11585K 166960K 14682 0 pcb 17 14K 16K 166960K 640 0 rtable 167 6K 8K 166960K 939 0 pf 33 14K 22K 166960K 180 0 ifaddr 31 5K 8K 166960K 123 0 ifgroup 42 1K 2K 166960K 198 0 sysctl 4 1K 1K 166960K 14 0 counters 28 17K 17K 166960K 71 0 ioctlops 0 0K 4K 166960K 280 0 iov 0 0K 20K 166960K 280 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1451 91K 92K 166960K 3671 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 36 0 VM map 2 1K 1K 166960K 2 0 sem 25 17K 17K 166960K 71 0 dirhash 12 2K 3K 166960K 63 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 17 61K 85K 166960K 2405 0 sigio 0 0K 0K 166960K 134 0 proc 64 67K 100K 166960K 878 0 subproc 72 4K 4K 166960K 147 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 285 0 in_multi 66 4K 7K 166960K 247 0 ether_multi 1 0K 0K 166960K 14 0 mrt 1 0K 0K 166960K 4 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 241 1076K 1076K 166960K 241 0 exec 0 0K 1K 166960K 917 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 6 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 214 72K 91K 166960K 22767 0 UVM aobj 33 2K 4K 166960K 37 0 pinsyscall 38 76K 90K 166960K 3643 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 130 0 NDP 9 0K 2K 166960K 90 0 temp 76 6892K 7020K 166960K 96930 0 kqueue 14 22K 34K 166960K 458 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 120 438 0 435 4 2 2 3 0 8 1 rtentry 112 261 0 189 4 1 3 4 0 8 0 unpcb 144 1578 0 1557 10 6 4 4 0 8 3 syncache 336 6 0 6 3 2 1 1 0 8 1 tcpqe 32 1 0 1 1 0 1 1 0 8 1 tcpcb 808 926 0 921 17 12 5 7 0 8 4 arp 88 49 0 36 1 0 1 1 0 8 0 ipq 40 9 0 8 1 0 1 1 0 8 0 ipqe 40 108 0 107 1 0 1 1 0 8 0 inpcb 344 3408 0 3399 23 15 8 10 0 8 7 ip6q 72 1 0 1 1 0 1 1 0 8 1 ip6af 40 2 0 2 1 0 1 1 0 8 1 nd6 104 59 0 41 1 0 1 1 0 8 0 pkpcb 40 22 0 22 3 2 1 1 0 8 1 kcovpl 48 16 0 8 1 0 1 1 0 8 0 ppxss 1072 17 0 17 3 2 1 1 0 8 1 pfstscr 40 4 0 4 4 3 1 1 0 8 1 pfanchor 1288 4 0 0 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 9 0 2 1 0 1 1 0 8 0 pfstkey 128 23 0 16 2 1 1 1 0 8 0 pfstate 344 16 0 12 2 1 1 1 0 8 0 pfrule 1344 15 0 15 3 2 1 1 0 8 1 art_heap8 4096 4 0 1 4 1 3 3 0 8 0 art_heap4 256 1080 0 733 33 6 27 33 0 8 0 art_table 32 1084 0 734 5 0 5 5 0 8 0 art_node 16 254 0 190 1 0 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 59 0 36 1 0 1 1 0 8 0 shmpl 112 34 0 4 1 0 1 1 0 8 0 dirhash 1024 52 0 35 3 0 3 3 0 8 0 dino2pl 256 5638 0 4133 95 0 95 95 0 8 0 ffsino 248 5638 0 4133 95 0 95 95 0 8 0 nchpl 144 9036 0 8476 64 32 32 64 0 8 8 uvmvnodes 80 7103 0 0 145 0 145 145 0 8 0 vnodes 216 7103 0 0 395 0 395 395 0 8 0 namei 1024 32894 0 32893 4 3 1 2 0 8 0 kstatmem 264 104 0 86 2 0 2 2 0 8 0 scsiplug 72 13 0 13 3 2 1 1 0 8 1 scxspl 216 25587 0 25587 15 12 3 8 1 8 3 plimitpl 152 983 0 964 1 0 1 1 0 8 0 sigapl 424 2692 0 2646 8 1 7 8 0 8 0 futexpl 64 35071 0 35068 1 0 1 1 0 8 0 knotepl 120 606822 0 606775 61 51 10 28 0 8 5 kqueuepl 184 781 0 769 4 3 1 4 0 8 0 pipepl 296 602 0 575 13 10 3 8 0 8 0 fdescpl 440 2652 0 2623 4 0 4 4 0 8 0 filepl 120 19988 0 19765 24 12 12 17 0 8 3 lockfpl 104 830 0 828 1 0 1 1 0 8 0 lockfspl 48 285 0 283 1 0 1 1 0 8 0 sessionpl 144 31 0 23 1 0 1 1 0 8 0 pgrppl 48 76 0 60 1 0 1 1 0 8 0 ucredpl 104 3612 0 3598 1 0 1 1 0 8 0 zombiepl 144 2646 0 2646 3 2 1 1 0 8 1 processpl 1104 2692 0 2646 6 1 5 6 0 8 0 procpl 648 5829 0 5775 7 1 6 7 0 8 0 sosppl 168 6 0 6 2 1 1 1 0 8 1 sockpl 528 5925 0 5892 27 17 10 14 0 8 7 mcl64k 65536 41 0 41 3 2 1 1 0 8 1 mcl16k 16384 17 0 17 3 2 1 1 0 8 1 mcl12k 12288 5 0 5 2 1 1 1 0 8 1 mcl8k 8192 97 0 97 4 3 1 1 0 8 1 mcl4k 4096 5514 0 5456 14 6 8 13 0 8 0 mcl2k2 2112 2 0 2 1 1 0 1 0 8 0 mcl2k 2048 2688 0 2675 6 3 3 4 0 8 0 mtagpl 96 150 0 51 3 0 3 3 0 8 0 mbufpl 256 37544 0 37301 53 27 26 35 0 8 6 bufpl 280 7515 0 1276 446 0 446 446 0 8 0 anonpl 24 340841 0 329776 115 22 93 95 0 187 5 amapchunkpl 152 76257 0 75693 40 11 29 33 0 158 4 amappl16 200 7593 0 7169 62 27 35 35 0 8 3 amappl15 192 4 0 4 1 1 0 1 0 8 0 amappl14 184 123 0 113 1 0 1 1 0 8 0 amappl13 176 7 0 7 2 2 0 1 0 8 0 amappl12 168 3415 0 3386 2 0 2 2 0 8 0 amappl11 160 46 0 36 1 0 1 1 0 8 0 amappl10 152 12 0 12 4 3 1 1 0 8 1 amappl9 144 248 0 248 1 1 0 1 0 8 0 amappl8 136 40 0 38 1 0 1 1 0 8 0 amappl7 128 118 0 106 1 0 1 1 0 8 0 amappl6 120 253 0 248 1 0 1 1 0 8 0 amappl5 112 145 0 138 1 0 1 1 0 8 0 amappl4 104 308 0 291 1 0 1 1 0 8 0 amappl3 96 15660 0 15552 4 0 4 4 0 8 0 amappl2 88 804 0 748 2 0 2 2 0 8 0 amappl1 80 14798 0 14278 15 3 12 13 0 8 0 amappl 88 22219 0 22053 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 dma512 512 1 0 1 1 1 0 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 260 0 260 4 3 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 20 0 19 1 0 1 1 0 8 0 aobjpl 72 36 0 4 1 0 1 1 0 8 0 uaddrrnd 24 2652 0 2623 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2652 0 2623 1 0 1 1 0 8 0 vmmpekpl 168 19476 0 19430 3 0 3 3 0 8 0 vmmpepl 168 161853 0 159719 120 13 107 107 0 357 5 vmsppl 360 2651 0 2623 4 1 3 4 0 8 0 rwobjpl 32 47440 0 39059 69 0 69 69 0 8 0 pdppl 4096 5310 0 5246 136 70 66 76 0 8 2 pvpl 32 1080431 0 1063823 248 51 197 197 0 265 43 pmappl 216 2651 0 2623 2 0 2 2 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 382 0 140 8 0 8 8 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ufs_direnter(fffffd80776762c0,fffffd805e9f10f8,ffff80002a926fd0,ffff80002a9272f0,fffffd806a4f9d20) at ufs_direnter+0x23c sys/ufs/ufs/ufs_lookup.c:764 ufs_mkdir(ffff80002a927160) at ufs_mkdir+0x60f sys/ufs/ufs/ufs_vnops.c:1179 VOP_MKDIR(fffffd80776762c0,ffff80002a9272c0,ffff80002a9272f0,ffff80002a9271f0) at VOP_MKDIR+0x102 sys/kern/vfs_vops.c:394 domkdirat(ffff80002a85a540,ffffff9c,70a614239d20,1ff) at domkdirat+0x179 sys/kern/vfs_syscalls.c:3102 syscall(ffff80002a927470) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x70a614239dc0, count: -6 ddb> machine ddbcpu 1 No such command ddb> trace ufs_direnter(fffffd80776762c0,fffffd805e9f10f8,ffff80002a926fd0,ffff80002a9272f0,fffffd806a4f9d20) at ufs_direnter+0x23c sys/ufs/ufs/ufs_lookup.c:764 ufs_mkdir(ffff80002a927160) at ufs_mkdir+0x60f sys/ufs/ufs/ufs_vnops.c:1179 VOP_MKDIR(fffffd80776762c0,ffff80002a9272c0,ffff80002a9272f0,ffff80002a9271f0) at VOP_MKDIR+0x102 sys/kern/vfs_vops.c:394 domkdirat(ffff80002a85a540,ffffff9c,70a614239d20,1ff) at domkdirat+0x179 sys/kern/vfs_syscalls.c:3102 syscall(ffff80002a927470) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x70a614239dc0, count: -6