uvm_fault(0xffffffff83a75668, 0xffff80002799200c, 0, 1) -> d kernel: page fault trap, code=0 Stopped at ufs_direnter+0x23b: movl 0(%r14),%r15d TID PID UID PRFLAGS PFLAGS CPU COMMAND *430793 84016 0 0 0x4000000 0 syz-executor ufs_direnter(fffffd8065f81a48,fffffd8069943e88,ffff80003c923708,ffff80003c923a68,0) at ufs_direnter+0x23b sys/ufs/ufs/ufs_lookup.c:764 ufs_makeinode(2000,fffffd8065f81a48,ffff80003c923a38,ffff80003c923a68) at ufs_makeinode+0x51b sys/ufs/ufs/ufs_vnops.c:1768 ufs_mknod(ffff80003c9238e0) at ufs_mknod+0x5b sys/ufs/ufs/ufs_vnops.c:167 VOP_MKNOD(fffffd8065f81a48,ffff80003c923a38,ffff80003c923a68,ffff80003c923968) at VOP_MKNOD+0x101 sys/kern/vfs_vops.c:121 domknodat(ffff80002a78c018,ffffff9c,200000000000,2000,3) at domknodat+0x469 sys/kern/vfs_syscalls.c:1659 syscall(ffff80003c923bf0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c923bf0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb16f94eff20, 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(0xffffffff83a75668, 0xffff80002799200c, 0, 1) -> d ddb> trace ufs_direnter(fffffd8065f81a48,fffffd8069943e88,ffff80003c923708,ffff80003c923a68,0) at ufs_direnter+0x23b sys/ufs/ufs/ufs_lookup.c:764 ufs_makeinode(2000,fffffd8065f81a48,ffff80003c923a38,ffff80003c923a68) at ufs_makeinode+0x51b sys/ufs/ufs/ufs_vnops.c:1768 ufs_mknod(ffff80003c9238e0) at ufs_mknod+0x5b sys/ufs/ufs/ufs_vnops.c:167 VOP_MKNOD(fffffd8065f81a48,ffff80003c923a38,ffff80003c923a68,ffff80003c923968) at VOP_MKNOD+0x101 sys/kern/vfs_vops.c:121 domknodat(ffff80002a78c018,ffffff9c,200000000000,2000,3) at domknodat+0x469 sys/kern/vfs_syscalls.c:1659 syscall(ffff80003c923bf0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c923bf0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb16f94eff20, count: -7 ddb> show registers rdi 0 rsi 0 rbp 0xffff80003c9236f0 rbx 0xfffffd8007ffd680 rdx 0xffff8000015aa0c0 rcx 0x60e rax 0xffff80002a78c018 r8 0xffffffffffffffff r9 0 r10 0x4dd326709830de6d r11 0x29cb71b567d894c1 r12 0xfffffd807aca8900 r13 0xfffffd800e14bb00 r14 0xffff80002799200c r15 0 rip 0xffffffff8118469b ufs_direnter+0x23b cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c923650 ss 0x10 ufs_direnter+0x23b: movl 0(%r14),%r15d ddb> show proc PROC (syz-executor) tid=430793 pid=84016 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=17, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a78dca0,0xffffffff839992b8 process=0xffff8000ffff8498 user=0xffff80003c91e000, vmspace=0xfffffd806cb27740 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 84016 351761 74360 0 2 0 syz-executor *84016 430793 74360 0 7 0x4000000 syz-executor 74221 388908 20207 0 2 0 syz-executor 74221 543 20207 0 3 0x4000080 fifor syz-executor 29573 9931 81105 0 2 0 syz-executor 29573 227907 81105 0 2 0x4000000 syz-executor 96148 168940 51625 0 2 0 syz-executor 96148 395140 51625 0 3 0x4000080 fsleep syz-executor 78529 280218 48711 0 2 0 syz-executor 78529 232793 48711 0 3 0x4000080 rest syz-executor 4606 343927 17072 0 2 0 syz-executor 4606 223461 17072 0 3 0x4000080 fsleep syz-executor 4606 403702 17072 0 3 0x4000080 fsleep syz-executor 8537 205386 65212 0 2 0 syz-executor 8537 194873 65212 0 3 0x4000080 fsleep syz-executor 85080 461298 0 0 3 0x14200 acct acct 42308 15711 1 0 3 0x80 nanoslp init 17072 395385 83193 0 3 0x82 nanoslp syz-executor 51625 420686 83193 0 2 0xc82 syz-executor 81105 351905 83193 0 3 0x82 nanoslp syz-executor 65212 166419 83193 0 2 0xc82 syz-executor 20207 524060 83193 0 2 0xc82 syz-executor 48711 389729 83193 0 3 0x82 nanoslp syz-executor 54641 381020 83193 0 3 0x82 nanoslp syz-executor 74360 355591 83193 0 2 0xc82 syz-executor 83193 54867 31103 0 3 0x82 kqread syz-executor 31103 396805 15578 0 3 0x10008a sigsusp ksh 15578 329313 35067 0 3 0x98 kqread sshd-session 35067 251779 87666 0 3 0x92 kqread sshd-session 87666 509849 1 0 3 0x88 kqread sshd 23494 267351 17129 73 3 0x1100090 kqread syslogd 17129 120675 1 0 3 0x100082 sbwait syslogd 8200 101140 1 0 3 0x100080 kqread resolvd 75958 498497 47255 77 3 0x100092 kqread dhcpleased 81970 64798 47255 77 3 0x100092 kqread dhcpleased 47255 339946 1 0 3 0x80 kqread dhcpleased 98422 491832 0 0 3 0x14200 bored smr 41234 432492 0 0 2 0x14200 zerothread 68658 70605 0 0 3 0x14200 aiodoned aiodoned 21417 384725 0 0 3 0x14200 syncer update 99097 199684 0 0 3 0x14200 cleaner cleaner 44076 519679 0 0 3 0x14200 reaper reaper 52040 146951 0 0 3 0x14200 pgdaemon pagedaemon 36135 294538 0 0 3 0x14200 bored viomb 8894 130131 0 0 3 0x40014200 acpi0 acpi0 67828 381358 0 0 3 0x14200 bored softnet0 47440 133492 0 0 3 0x14200 bored systqmp 58285 357726 0 0 3 0x14200 bored systq 57165 337245 0 0 3 0x40014200 tmoslp softclock 84310 316664 0 0 3 0x40014200 idle0 1 212708 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 11066 12105K 12816K 166960K 15841 0 pcb 19 12K 12K 166960K 106 0 rtable 201 6K 8K 166960K 431 0 pf 28 12K 14K 166960K 135 0 ifaddr 34 6K 8K 166960K 96 0 ifgroup 42 1K 2K 166960K 163 0 sysctl 3 1K 9K 166960K 12 0 counters 31 17K 18K 166960K 118 0 ioctlops 0 0K 4K 166960K 393 0 iov 0 0K 12K 166960K 19 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1297 82K 82K 166960K 2641 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 35 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 21 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 93K 166960K 1811 0 sigio 0 0K 0K 166960K 14 0 proc 51 50K 116K 166960K 520 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 363 0 in_multi 77 5K 7K 166960K 111 0 ether_multi 1 0K 0K 166960K 2 0 mrt 0 0K 0K 166960K 22 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 277 1235K 1235K 166960K 277 0 exec 0 0K 1K 166960K 494 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 220 154K 182K 166960K 16306 0 UVM aobj 106 3K 3K 166960K 106 0 pinsyscall 38 76K 95K 166960K 2967 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 95 0 NDP 9 0K 2K 166960K 75 0 temp 40 9071K 9135K 166960K 19360 0 kqueue 13 20K 26K 166960K 182 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 77 0 74 1 0 1 1 0 8 0 rtentry 136 117 0 28 4 0 4 4 0 8 0 unpcb 144 506 0 489 4 0 4 4 0 8 3 syncache 336 9 0 9 1 0 1 1 0 8 1 tcpqe 32 5 0 5 1 0 1 1 0 8 1 tcpcb 736 218 0 208 4 0 4 4 0 8 3 arp 96 18 0 4 1 0 1 1 0 8 0 ipq 40 6 0 4 1 0 1 1 0 8 0 ipqe 40 11 0 8 1 0 1 1 0 8 0 inpcb 328 803 0 787 4 0 4 4 0 8 2 ip6q 72 3 0 1 1 0 1 1 0 8 0 ip6af 40 6 0 3 1 0 1 1 0 8 0 nd6 112 26 0 8 1 0 1 1 0 8 0 pkpcb 40 46 0 46 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 78 0 78 1 0 1 1 0 8 1 pfstscr 40 2 0 0 1 0 1 1 0 8 0 pfosfp 40 4 0 3 1 0 1 1 0 8 0 pfosfpen 112 4 0 3 1 0 1 1 0 8 0 pfsrclim 320 5 0 5 1 0 1 1 0 8 1 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 128 3 0 1 1 0 1 1 0 8 0 pfstate 384 2 0 1 1 0 1 1 0 8 0 rttmr 136 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 500 0 135 29 0 29 29 0 8 2 art_table 40 501 0 135 5 0 5 5 0 8 0 art_node 32 117 0 37 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 3 1 0 1 1 0 8 0 semupl 112 4 0 4 1 0 1 1 0 8 1 semapl 112 19 0 9 1 0 1 1 0 8 0 shmpl 112 103 0 0 3 0 3 3 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 4156 0 2696 92 0 92 92 0 8 0 ffsino 256 4156 0 2696 92 0 92 92 0 8 0 nchpl 144 6369 0 4671 64 0 64 64 0 8 0 rtmask 32 2 0 2 1 0 1 1 0 8 1 vnodes 216 5023 0 0 280 0 280 280 0 8 0 namei 1024 16799 0 16798 2 0 2 2 0 8 1 kstatmem 264 119 0 100 2 0 2 2 0 8 0 scsiplug 72 2 0 2 1 0 1 1 0 8 1 scxspl 216 27600 0 27600 8 0 8 8 1 8 8 plimitpl 152 156 0 141 1 0 1 1 0 8 0 sigapl 424 2119 0 2075 6 0 6 6 0 8 0 knotepl 120 68361 0 68314 19 8 11 15 0 8 8 kqueuepl 184 268 0 259 1 0 1 1 0 8 0 pipepl 304 150 0 122 3 0 3 3 0 8 0 fdescpl 448 2105 0 2075 5 0 5 5 0 8 1 filepl 120 7102 0 6887 9 0 9 9 0 8 2 lockfpl 104 578 0 576 1 0 1 1 0 8 0 lockfspl 48 284 0 282 1 0 1 1 0 8 0 sessionpl 144 58 0 51 1 0 1 1 0 8 0 pgrppl 48 68 0 53 1 0 1 1 0 8 0 ucredpl 104 1137 0 1126 1 0 1 1 0 8 0 zombiepl 144 2076 0 2075 1 0 1 1 0 8 0 processpl 1152 2119 0 2075 4 0 4 4 0 8 0 procpl 664 3938 0 3886 5 0 5 5 0 8 0 sosppl 176 6 0 6 1 0 1 1 0 8 1 sockpl 552 1435 0 1399 8 0 8 8 0 8 5 mcl64k 65536 265 0 265 1 0 1 1 0 8 1 mcl16k 16384 96 0 96 1 0 1 1 0 8 1 mcl12k 12288 19 0 19 1 0 1 1 0 8 1 mcl9k128 9344 28 0 28 1 0 1 1 0 8 1 mcl8k 8192 234 0 234 1 0 1 1 0 8 1 mcl4k 4096 6026 0 5974 13 0 13 13 0 8 6 mcl2k2 2112 19 0 19 1 0 1 1 0 8 1 mcl2k 2048 1169 0 1167 1 0 1 1 0 8 0 mtagpl 96 69 0 13 2 0 2 2 0 8 0 mbufpl 256 22678 0 22440 21 0 21 21 0 8 3 bufpl 280 9132 0 2918 444 0 444 444 0 8 0 anonpl 24 262685 0 259482 64 0 64 64 0 187 28 amapchunkpl 152 55092 0 54612 28 0 28 28 0 158 7 amappl16 200 4491 0 4457 20 8 12 16 0 8 7 amappl15 192 7 0 7 1 0 1 1 0 8 1 amappl14 184 413 0 412 1 0 1 1 0 8 0 amappl13 176 128 0 119 1 0 1 1 0 8 0 amappl12 168 2349 0 2321 2 0 2 2 0 8 0 amappl11 160 7 0 7 1 0 1 1 0 8 1 amappl10 152 62 0 52 1 0 1 1 0 8 0 amappl9 144 265 0 265 1 0 1 1 0 8 1 amappl8 136 104 0 103 1 0 1 1 0 8 0 amappl7 128 152 0 141 1 0 1 1 0 8 0 amappl6 120 152 0 151 1 0 1 1 0 8 0 amappl5 112 105 0 98 1 0 1 1 0 8 0 amappl4 104 281 0 266 1 0 1 1 0 8 0 amappl3 96 11943 0 11834 4 0 4 4 0 8 0 amappl2 88 592 0 542 2 0 2 2 0 8 0 amappl1 80 18648 0 18119 15 0 15 15 0 8 3 amappl 88 15432 0 15272 5 0 5 5 0 92 0 uvmvnodes 80 128 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 14 0 14 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 72 105 0 0 2 0 2 2 0 8 0 uaddrrnd 24 2105 0 2075 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2105 0 2075 1 0 1 1 0 8 0 vmmpekpl 168 15896 0 15864 2 0 2 2 0 8 0 vmmpepl 168 133488 0 131698 102 0 102 102 0 357 19 vmsppl 368 2104 0 2075 4 0 4 4 0 8 1 rwobjpl 40 33571 0 32529 15 0 15 15 0 8 1 pdppl 4096 4216 0 4150 106 36 70 80 0 8 4 pvpl 32 889396 0 880061 150 0 150 150 0 265 49 pmappl 216 2104 0 2075 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 380 0 36 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ufs_direnter(fffffd8065f81a48,fffffd8069943e88,ffff80003c923708,ffff80003c923a68,0) at ufs_direnter+0x23b sys/ufs/ufs/ufs_lookup.c:764 ufs_makeinode(2000,fffffd8065f81a48,ffff80003c923a38,ffff80003c923a68) at ufs_makeinode+0x51b sys/ufs/ufs/ufs_vnops.c:1768 ufs_mknod(ffff80003c9238e0) at ufs_mknod+0x5b sys/ufs/ufs/ufs_vnops.c:167 VOP_MKNOD(fffffd8065f81a48,ffff80003c923a38,ffff80003c923a68,ffff80003c923968) at VOP_MKNOD+0x101 sys/kern/vfs_vops.c:121 domknodat(ffff80002a78c018,ffffff9c,200000000000,2000,3) at domknodat+0x469 sys/kern/vfs_syscalls.c:1659 syscall(ffff80003c923bf0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c923bf0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb16f94eff20, count: -7 ddb> machine ddbcpu 1 No such command ddb> trace ufs_direnter(fffffd8065f81a48,fffffd8069943e88,ffff80003c923708,ffff80003c923a68,0) at ufs_direnter+0x23b sys/ufs/ufs/ufs_lookup.c:764 ufs_makeinode(2000,fffffd8065f81a48,ffff80003c923a38,ffff80003c923a68) at ufs_makeinode+0x51b sys/ufs/ufs/ufs_vnops.c:1768 ufs_mknod(ffff80003c9238e0) at ufs_mknod+0x5b sys/ufs/ufs/ufs_vnops.c:167 VOP_MKNOD(fffffd8065f81a48,ffff80003c923a38,ffff80003c923a68,ffff80003c923968) at VOP_MKNOD+0x101 sys/kern/vfs_vops.c:121 domknodat(ffff80002a78c018,ffffff9c,200000000000,2000,3) at domknodat+0x469 sys/kern/vfs_syscalls.c:1659 syscall(ffff80003c923bf0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c923bf0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb16f94eff20, count: -7