login: uvm_fault(0xffffffff83a25ce8, 0xffff8000297c200c, 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 *124404 10473 0 0 0x4000000 0 syz-executor ufs_direnter(fffffd8069df1478,fffffd8069df1550,ffff8000334eb9d8,ffff8000334ebd38,0) at ufs_direnter+0x23b sys/ufs/ufs/ufs_lookup.c:764 ufs_makeinode(2000,fffffd8069df1478,ffff8000334ebd08,ffff8000334ebd38) at ufs_makeinode+0x51b sys/ufs/ufs/ufs_vnops.c:1768 ufs_mknod(ffff8000334ebbb0) at ufs_mknod+0x5b sys/ufs/ufs/ufs_vnops.c:167 VOP_MKNOD(fffffd8069df1478,ffff8000334ebd08,ffff8000334ebd38,ffff8000334ebc38) at VOP_MKNOD+0x101 sys/kern/vfs_vops.c:121 domknodat(ffff80003c90ad18,ffffff9c,200000000000,2000,6381) at domknodat+0x469 sys/kern/vfs_syscalls.c:1659 syscall(ffff8000334ebec0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000334ebec0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe01287fc7c0, 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(0xffffffff83a25ce8, 0xffff8000297c200c, 0, 1) -> d ddb> trace ufs_direnter(fffffd8069df1478,fffffd8069df1550,ffff8000334eb9d8,ffff8000334ebd38,0) at ufs_direnter+0x23b sys/ufs/ufs/ufs_lookup.c:764 ufs_makeinode(2000,fffffd8069df1478,ffff8000334ebd08,ffff8000334ebd38) at ufs_makeinode+0x51b sys/ufs/ufs/ufs_vnops.c:1768 ufs_mknod(ffff8000334ebbb0) at ufs_mknod+0x5b sys/ufs/ufs/ufs_vnops.c:167 VOP_MKNOD(fffffd8069df1478,ffff8000334ebd08,ffff8000334ebd38,ffff8000334ebc38) at VOP_MKNOD+0x101 sys/kern/vfs_vops.c:121 domknodat(ffff80003c90ad18,ffffff9c,200000000000,2000,6381) at domknodat+0x469 sys/kern/vfs_syscalls.c:1659 syscall(ffff8000334ebec0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000334ebec0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe01287fc7c0, count: -7 ddb> show registers rdi 0 rsi 0 rbp 0xffff8000334eb9c0 rbx 0xfffffd8007ffd3a8 rdx 0xffff8000015d5180 rcx 0x5ba rax 0xffff80003c90ad18 r8 0xffffffffffffffff r9 0 r10 0x192df6726c19593c r11 0x1405030fda82d439 r12 0xfffffd8076738500 r13 0xfffffd807a6fb900 r14 0xffff8000297c200c r15 0 rip 0xffffffff8303300b ufs_direnter+0x23b cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000334eb920 ss 0x10 ufs_direnter+0x23b: movl 0(%r14),%r15d ddb> show proc PROC (syz-executor) tid=124404 pid=10473 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=0xffff80002a7467d0,0xffffffff83997580 process=0xffff8000ffffad18 user=0xffff8000334e6000, vmspace=0xfffffd8062a88188 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 10473 341984 13953 0 2 0 syz-executor *10473 124404 13953 0 7 0x4000000 syz-executor 15487 475728 4525 0 2 0 syz-executor 15487 461475 4525 0 3 0x4000080 fsleep syz-executor 85088 332299 34035 0 2 0 syz-executor 85088 251573 34035 0 3 0x4000080 fsleep syz-executor 10833 125604 26969 0 2 0 syz-executor 10833 330408 26969 0 2 0x4000000 syz-executor 24080 407125 98902 0 2 0 syz-executor 24080 246068 98902 0 2 0x4000000 syz-executor 60932 73407 34337 0 2 0 syz-executor 60932 215043 34337 0 3 0x4000080 rest syz-executor 98217 292599 89385 0 2 0 syz-executor 98217 309950 89385 0 3 0x4000080 fsleep syz-executor 31791 79926 95654 0 2 0xc80 syz-executor 31791 288479 95654 0 3 0x4000080 netcon syz-executor 31791 201977 95654 0 3 0x4000080 netacc syz-executor 35212 390993 1 0 3 0x100083 ttyin getty 90466 175632 0 0 3 0x14200 acct acct 34035 64694 56257 0 2 0xc82 syz-executor 95654 54615 56257 0 2 0xc82 syz-executor 98902 263178 56257 0 2 0xc82 syz-executor 26969 213013 56257 0 2 0xc82 syz-executor 34337 519106 56257 0 2 0xc82 syz-executor 13953 230882 56257 0 2 0xc82 syz-executor 4525 262793 56257 0 2 0xc82 syz-executor 89385 49337 56257 0 2 0xc82 syz-executor 56257 522985 80231 0 3 0x82 kqread syz-executor 80231 341962 33102 0 3 0x10008a sigsusp ksh 33102 448706 75115 0 3 0x98 kqread sshd-session 75115 389012 94097 0 3 0x92 kqread sshd-session 94097 329339 1 0 3 0x88 kqread sshd 54706 439989 50575 73 3 0x1100090 kqread syslogd 50575 350577 1 0 3 0x100082 sbwait syslogd 10452 427591 1 0 3 0x100080 kqread resolvd 19497 421974 31461 77 3 0x100092 kqread dhcpleased 34392 154345 31461 77 3 0x100092 kqread dhcpleased 31461 22323 1 0 3 0x80 kqread dhcpleased 72031 40558 0 0 3 0x14200 bored smr 9577 313486 0 0 2 0x14200 zerothread 3400 402443 0 0 3 0x14200 aiodoned aiodoned 33433 41726 0 0 3 0x14200 syncer update 85461 210100 0 0 3 0x14200 cleaner cleaner 15663 274019 0 0 3 0x14200 reaper reaper 57399 214243 0 0 3 0x14200 pgdaemon pagedaemon 99020 424713 0 0 3 0x14200 bored viomb 92175 469270 0 0 3 0x40014200 acpi0 acpi0 25500 464308 0 0 3 0x14200 bored softnet0 64577 172831 0 0 3 0x14200 bored systqmp 91625 252249 0 0 3 0x14200 bored systq 45265 133002 0 0 3 0x40014200 tmoslp softclock 63540 130838 0 0 3 0x40014200 idle0 1 362425 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11043 12100K 12425K 166960K 13576 0 pcb 17 12K 12K 166960K 180 0 rtable 183 8K 11K 166960K 669 0 pf 37 14K 20K 166960K 308 0 ifaddr 32 5K 8K 166960K 112 0 ifgroup 44 1K 2K 166960K 184 0 sysctl 3 1K 9K 166960K 7 0 counters 32 17K 18K 166960K 110 0 ioctlops 0 0K 4K 166960K 216 0 iov 0 0K 12K 166960K 41 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1297 82K 82K 166960K 2241 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 25 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 25 0 dirhash 12 2K 3K 166960K 66 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 97K 166960K 1637 0 sigio 0 0K 0K 166960K 23 0 proc 60 59K 124K 166960K 601 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 74 0 in_multi 62 4K 7K 166960K 201 0 ether_multi 1 0K 0K 166960K 30 0 mrt 1 0K 0K 166960K 62 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 115 519K 519K 166960K 115 0 exec 0 0K 1K 166960K 423 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 228 151K 168K 166960K 14549 0 UVM aobj 32 2K 2K 166960K 35 0 pinsyscall 39 78K 96K 166960K 2748 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 81 0 NDP 10 0K 2K 166960K 75 0 temp 49 9073K 9201K 166960K 37783 0 kqueue 16 26K 28K 166960K 276 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 69 0 66 1 0 1 1 0 8 0 rtentry 136 168 0 99 4 0 4 4 0 8 0 unpcb 144 467 0 450 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 204 0 198 1 0 1 1 0 8 0 arp 96 26 0 10 1 0 1 1 0 8 0 ipq 40 6 0 0 1 0 1 1 0 8 0 ipqe 40 7 0 1 1 0 1 1 0 8 0 inpcb 328 615 0 604 2 0 2 2 0 8 0 nd6 112 29 0 18 1 0 1 1 0 8 0 pkpcb 40 9 0 9 1 0 1 1 0 8 1 kcovpl 48 9 0 1 1 0 1 1 0 8 0 mppekey 1024 3 0 3 1 0 1 1 0 8 1 ppxss 1072 60 0 59 1 0 1 1 0 8 0 pppxif 1416 13 0 13 1 0 1 1 0 8 1 pfstscr 40 26 0 18 1 0 1 1 0 8 0 pfrktable 1344 61 0 61 1 0 1 1 0 8 1 pfsrclim 320 3 0 3 1 0 1 1 0 8 1 pfanchor 1288 22 0 22 1 0 1 1 0 8 1 pftag 88 6 0 3 1 0 1 1 0 8 0 pfqueue 320 1 0 0 1 0 1 1 0 8 0 pfstitem 24 11 0 1 1 0 1 1 0 8 0 pfstkey 128 38 0 28 1 0 1 1 0 8 0 pfstate 384 19 0 14 1 0 1 1 0 8 0 pfrule 1360 32 0 31 1 0 1 1 0 8 0 rttmr 136 15 0 15 1 0 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 826 0 539 30 0 30 30 0 8 7 art_table 40 828 0 539 5 0 5 5 0 8 0 art_node 32 166 0 105 1 0 1 1 0 8 0 sysvmsgpl 40 18 0 9 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 22 0 12 1 0 1 1 0 8 0 shmpl 112 32 0 3 1 0 1 1 0 8 0 dirhash 1024 53 0 36 3 0 3 3 0 8 0 dino2pl 256 4104 0 2643 92 0 92 92 0 8 0 ffsino 256 4104 0 2643 92 0 92 92 0 8 0 nchpl 144 5954 0 4257 64 0 64 64 0 8 0 rtmask 32 8 0 8 1 0 1 1 0 8 1 vnodes 216 4605 0 0 256 0 256 256 0 8 0 namei 1024 16936 0 16935 2 0 2 2 0 8 1 pfiaddrpl 120 20 0 20 1 0 1 1 0 8 1 kstatmem 264 113 0 92 2 0 2 2 0 8 0 scsiplug 72 5 0 5 1 0 1 1 0 8 1 scxspl 216 24025 0 24025 8 0 8 8 1 8 8 plimitpl 152 321 0 305 1 0 1 1 0 8 0 sigapl 424 1933 0 1889 6 0 6 6 0 8 0 knotepl 120 105571 0 105267 18 8 10 16 0 8 0 kqueuepl 184 285 0 272 1 0 1 1 0 8 0 pipepl 304 147 0 120 3 0 3 3 0 8 0 fdescpl 448 1913 0 1883 5 0 5 5 0 8 1 filepl 120 6799 0 6584 7 0 7 7 0 8 0 lockfpl 104 365 0 362 1 0 1 1 0 8 0 lockfspl 48 167 0 164 1 0 1 1 0 8 0 sessionpl 144 56 0 48 1 0 1 1 0 8 0 pgrppl 48 71 0 55 1 0 1 1 0 8 0 ucredpl 104 2006 0 1995 1 0 1 1 0 8 0 zombiepl 144 1889 0 1889 1 0 1 1 0 8 1 processpl 1152 1933 0 1889 4 0 4 4 0 8 0 procpl 664 3687 0 3634 6 0 6 6 0 8 1 sosppl 176 11 0 11 1 0 1 1 0 8 1 sockpl 552 1166 0 1135 3 0 3 3 0 8 0 mcl64k 65536 790 0 786 1 0 1 1 0 8 0 mcl16k 16384 387 0 387 1 0 1 1 0 8 1 mcl12k 12288 205 0 205 1 0 1 1 0 8 1 mcl9k128 9344 77 0 77 1 0 1 1 0 8 1 mcl8k 8192 249 0 249 1 0 1 1 0 8 1 mcl4k 4096 5583 0 5530 13 0 13 13 0 8 5 mcl2k2 2112 6 0 6 1 0 1 1 0 8 1 mcl2k 2048 639 0 637 1 0 1 1 0 8 0 mtagpl 96 26 0 12 1 0 1 1 0 8 0 mbufpl 256 23139 0 22951 18 0 18 18 0 8 4 bufpl 280 8077 0 1863 445 0 445 445 0 8 0 anonpl 24 252347 0 247354 70 0 70 70 0 187 17 amapchunkpl 152 49897 0 49334 32 0 32 32 0 158 7 amappl16 200 4727 0 4655 33 17 16 27 0 8 6 amappl15 192 13 0 12 1 0 1 1 0 8 0 amappl14 184 421 0 420 1 0 1 1 0 8 0 amappl13 176 117 0 107 1 0 1 1 0 8 0 amappl12 168 2169 0 2140 2 0 2 2 0 8 0 amappl11 160 2 0 2 1 0 1 1 0 8 1 amappl10 152 74 0 64 1 0 1 1 0 8 0 amappl9 144 263 0 263 1 0 1 1 0 8 1 amappl8 136 107 0 105 1 0 1 1 0 8 0 amappl7 128 142 0 131 1 0 1 1 0 8 0 amappl6 120 161 0 159 1 0 1 1 0 8 0 amappl5 112 83 0 76 1 0 1 1 0 8 0 amappl4 104 270 0 255 1 0 1 1 0 8 0 amappl3 96 10959 0 10845 4 0 4 4 0 8 0 amappl2 88 513 0 460 2 0 2 2 0 8 0 amappl1 80 15538 0 14982 13 0 13 13 0 8 1 amappl 88 13772 0 13605 5 0 5 5 0 92 0 uvmvnodes 80 150 0 0 4 0 4 4 0 8 0 dma4096 4096 1 0 1 1 0 1 1 0 8 1 dma2048 2048 3 0 3 1 0 1 1 0 8 1 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 8 0 8 1 0 1 1 0 8 1 dma128 128 257 0 257 1 0 1 1 0 8 1 dma64 64 10 0 10 1 0 1 1 0 8 1 dma32 32 7 0 7 1 0 1 1 0 8 1 dma16 16 24 0 23 1 0 1 1 0 8 0 aobjpl 72 34 0 3 1 0 1 1 0 8 0 uaddrrnd 24 1913 0 1883 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1913 0 1883 1 0 1 1 0 8 0 vmmpekpl 168 13815 0 13776 3 0 3 3 0 8 0 vmmpepl 168 123069 0 121178 100 0 100 100 0 357 17 vmsppl 368 1912 0 1883 4 0 4 4 0 8 1 rwobjpl 40 29978 0 28896 15 0 15 15 0 8 1 pdppl 4096 3832 0 3766 98 32 66 82 0 8 0 pvpl 32 941204 0 930292 159 0 159 159 0 265 31 pmappl 216 1912 0 1883 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 371 0 32 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ufs_direnter(fffffd8069df1478,fffffd8069df1550,ffff8000334eb9d8,ffff8000334ebd38,0) at ufs_direnter+0x23b sys/ufs/ufs/ufs_lookup.c:764 ufs_makeinode(2000,fffffd8069df1478,ffff8000334ebd08,ffff8000334ebd38) at ufs_makeinode+0x51b sys/ufs/ufs/ufs_vnops.c:1768 ufs_mknod(ffff8000334ebbb0) at ufs_mknod+0x5b sys/ufs/ufs/ufs_vnops.c:167 VOP_MKNOD(fffffd8069df1478,ffff8000334ebd08,ffff8000334ebd38,ffff8000334ebc38) at VOP_MKNOD+0x101 sys/kern/vfs_vops.c:121 domknodat(ffff80003c90ad18,ffffff9c,200000000000,2000,6381) at domknodat+0x469 sys/kern/vfs_syscalls.c:1659 syscall(ffff8000334ebec0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000334ebec0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe01287fc7c0, count: -7 ddb> machine ddbcpu 1 No such command ddb> trace ufs_direnter(fffffd8069df1478,fffffd8069df1550,ffff8000334eb9d8,ffff8000334ebd38,0) at ufs_direnter+0x23b sys/ufs/ufs/ufs_lookup.c:764 ufs_makeinode(2000,fffffd8069df1478,ffff8000334ebd08,ffff8000334ebd38) at ufs_makeinode+0x51b sys/ufs/ufs/ufs_vnops.c:1768 ufs_mknod(ffff8000334ebbb0) at ufs_mknod+0x5b sys/ufs/ufs/ufs_vnops.c:167 VOP_MKNOD(fffffd8069df1478,ffff8000334ebd08,ffff8000334ebd38,ffff8000334ebc38) at VOP_MKNOD+0x101 sys/kern/vfs_vops.c:121 domknodat(ffff80003c90ad18,ffffff9c,200000000000,2000,6381) at domknodat+0x469 sys/kern/vfs_syscalls.c:1659 syscall(ffff8000334ebec0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000334ebec0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe01287fc7c0, count: -7