uvm_fault(0xffffffff83a77d60, 0xffff8000295e2004, 0, 1) -> d kernel: page fault trap, code=0 Stopped at ffs_freefile+0x11e: movl 0x4(%rbx),%r13d TID PID UID PRFLAGS PFLAGS CPU COMMAND *119565 87290 0 0 0x4000000 0 syz-executor ffs_freefile(fffffd80697b3200,4f3,2000) at ffs_freefile+0x11e ffs_cgread sys/ufs/ffs/ffs_alloc.c:856 [inline] ffs_freefile(fffffd80697b3200,4f3,2000) at ffs_freefile+0x11e sys/ufs/ffs/ffs_alloc.c:1377 ffs_inode_free(fffffd80697b3200,4f3,2000) at ffs_inode_free+0x44 sys/ufs/ffs/ffs_alloc.c:1355 ufs_inactive(ffff80003c91b0f0) at ufs_inactive+0x299 sys/ufs/ufs/ufs_inode.c:94 VOP_INACTIVE(fffffd805d33edc8,ffff80003c90afb0) at VOP_INACTIVE+0xfb sys/kern/vfs_vops.c:498 vput(fffffd805d33edc8) at vput+0xdc sys/kern/vfs_subr.c:789 ufs_makeinode(2000,fffffd805d33e630,ffff80003c91b4b8,ffff80003c91b4e8) at ufs_makeinode+0x2e0 sys/ufs/ufs/ufs_vnops.c:1789 ufs_mknod(ffff80003c91b360) at ufs_mknod+0x5b sys/ufs/ufs/ufs_vnops.c:167 VOP_MKNOD(fffffd805d33e630,ffff80003c91b4b8,ffff80003c91b4e8,ffff80003c91b3e8) at VOP_MKNOD+0x101 sys/kern/vfs_vops.c:121 domknodat(ffff80003c90afb0,ffffff9c,2000000001c0,2000,205b9a) at domknodat+0x469 sys/kern/vfs_syscalls.c:1659 syscall(ffff80003c91b670) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c91b670) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd5bbaba130, count: 4 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(0xffffffff83a77d60, 0xffff8000295e2004, 0, 1) -> d ddb> trace ffs_freefile(fffffd80697b3200,4f3,2000) at ffs_freefile+0x11e ffs_cgread sys/ufs/ffs/ffs_alloc.c:856 [inline] ffs_freefile(fffffd80697b3200,4f3,2000) at ffs_freefile+0x11e sys/ufs/ffs/ffs_alloc.c:1377 ffs_inode_free(fffffd80697b3200,4f3,2000) at ffs_inode_free+0x44 sys/ufs/ffs/ffs_alloc.c:1355 ufs_inactive(ffff80003c91b0f0) at ufs_inactive+0x299 sys/ufs/ufs/ufs_inode.c:94 VOP_INACTIVE(fffffd805d33edc8,ffff80003c90afb0) at VOP_INACTIVE+0xfb sys/kern/vfs_vops.c:498 vput(fffffd805d33edc8) at vput+0xdc sys/kern/vfs_subr.c:789 ufs_makeinode(2000,fffffd805d33e630,ffff80003c91b4b8,ffff80003c91b4e8) at ufs_makeinode+0x2e0 sys/ufs/ufs/ufs_vnops.c:1789 ufs_mknod(ffff80003c91b360) at ufs_mknod+0x5b sys/ufs/ufs/ufs_vnops.c:167 VOP_MKNOD(fffffd805d33e630,ffff80003c91b4b8,ffff80003c91b4e8,ffff80003c91b3e8) at VOP_MKNOD+0x101 sys/kern/vfs_vops.c:121 domknodat(ffff80003c90afb0,ffffff9c,2000000001c0,2000,205b9a) at domknodat+0x469 sys/kern/vfs_syscalls.c:1659 syscall(ffff80003c91b670) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c91b670) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd5bbaba130, count: -11 ddb> show registers rdi 0 rsi 0 rbp 0xffff80003c91b030 rbx 0xffff8000295e2000 rdx 0 rcx 0xfffffd8068727c38 rax 0xfffffd805d5567d8 r8 0xffffffffffffffff r9 0 r10 0xd81b9d12a87ef948 r11 0xf140a02409c4853a r12 0 r13 0 r14 0xffff800000c47800 r15 0x4f3 rip 0xffffffff815fac5e ffs_freefile+0x11e cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c91afa0 ss 0x10 ffs_freefile+0x11e: movl 0x4(%rbx),%r13d ddb> show proc PROC (syz-executor) tid=119565 pid=87290 tcnt=3 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=0xffff80003c90a2b8,0xffff80002a76ba18 process=0xffff8000ffffb198 user=0xffff80003c916000, vmspace=0xfffffd806cd08b90 estcpu=12, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 87290 282949 28578 0 2 0 syz-executor *87290 119565 28578 0 7 0x4000000 syz-executor 87290 12322 28578 0 3 0x4000000 inode syz-executor 22633 44991 46137 0 2 0 syz-executor 22633 207204 46137 0 2 0x4000000 syz-executor 22633 35140 46137 0 3 0x4000080 fsleep syz-executor 22633 50214 46137 0 3 0x4000080 fsleep syz-executor 77918 390818 56463 0 3 0x80 fsleep syz-executor 77918 285399 56463 0 3 0x4000080 sbwait syz-executor 78682 91549 58561 0 3 0x80 fsleep syz-executor 78682 211489 58561 0 2 0x4000000 syz-executor 46137 172196 19780 0 2 0xc82 syz-executor 18720 229314 19780 0 3 0x2 biowait syz-executor 56463 16811 19780 0 3 0x82 nanoslp syz-executor 28578 432049 19780 0 2 0xc82 syz-executor 58561 9678 19780 0 3 0x82 wait syz-executor 30324 454319 19780 0 3 0x82 wait syz-executor 7405 457255 19780 0 2 0x2 syz-executor 72011 444594 19780 0 2 0x2 syz-executor 19780 425631 43176 0 3 0x82 kqread syz-executor 43176 448172 15582 0 3 0x10008a sigsusp ksh 15582 49875 37977 0 3 0x98 kqread sshd-session 37977 367274 87558 0 3 0x92 kqread sshd-session 31048 365198 1 0 3 0x100083 ttyin getty 87558 270736 1 0 3 0x88 kqread sshd 11401 248745 6389 73 3 0x1100090 kqread syslogd 6389 112142 1 0 3 0x100082 sbwait syslogd 46422 514114 1 0 3 0x100080 kqread resolvd 83150 172158 92792 77 3 0x100092 kqread dhcpleased 72395 421440 92792 77 3 0x100092 kqread dhcpleased 92792 182719 1 0 3 0x80 kqread dhcpleased 19291 96622 0 0 3 0x14200 bored smr 78803 137915 0 0 2 0x14200 zerothread 71027 385922 0 0 3 0x14200 aiodoned aiodoned 88273 509483 0 0 3 0x14200 syncer update 62897 271197 0 0 3 0x14200 cleaner cleaner 56589 100302 0 0 3 0x14200 reaper reaper 57156 86177 0 0 3 0x14200 pgdaemon pagedaemon 97509 522546 0 0 3 0x14200 bored viomb 95998 271932 0 0 3 0x40014200 acpi0 acpi0 96460 59156 0 0 3 0x14200 bored softnet0 70246 319116 0 0 3 0x14200 smrbar systqmp 25578 331609 0 0 3 0x14200 bored systq 15307 186498 0 0 3 0x40014200 tmoslp softclock 70949 87971 0 0 3 0x40014200 idle0 1 23503 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 11048 12177K 12385K 166960K 12740 0 pcb 17 14K 15K 166960K 124 0 rtable 214 15K 16K 166960K 468 0 pf 33 13K 18K 166960K 97 0 ifaddr 36 6K 7K 166960K 67 0 ifgroup 50 2K 2K 166960K 100 0 sysctl 3 1K 9K 166960K 8 0 counters 33 17K 18K 166960K 60 0 ioctlops 0 0K 4K 166960K 156 0 iov 0 0K 13K 166960K 12 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1321 83K 84K 166960K 1840 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 7 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 95 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 93K 166960K 690 0 sigio 0 0K 0K 166960K 6 0 proc 61 59K 116K 166960K 547 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 85 0 in_multi 77 5K 7K 166960K 129 0 ether_multi 1 0K 0K 166960K 11 0 mrt 0 0K 0K 166960K 23 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 73 334K 334K 166960K 73 0 exec 0 0K 1K 166960K 410 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 207 151K 170K 166960K 7944 0 UVM aobj 24 5K 5K 166960K 27 0 pinsyscall 37 74K 98K 166960K 1834 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 26 0 NDP 11 0K 2K 166960K 46 0 temp 76 9072K 9137K 166960K 27150 0 kqueue 14 22K 28K 166960K 120 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 93 0 90 1 0 1 1 0 8 0 rtentry 136 127 0 44 4 0 4 4 0 8 0 unpcb 144 524 0 504 4 0 4 4 0 8 3 syncache 336 8 0 8 1 0 1 1 0 8 1 tcpqe 32 2 0 2 1 0 1 1 0 8 1 tcpcb 736 229 0 221 4 0 4 4 0 8 2 arp 96 20 0 5 1 0 1 1 0 8 0 ipq 40 4 0 3 1 0 1 1 0 8 0 ipqe 40 7 0 6 1 0 1 1 0 8 0 inpcb 328 640 0 627 7 0 7 7 0 8 5 ip6q 72 1 0 0 1 0 1 1 0 8 0 ip6af 40 2 0 1 1 0 1 1 0 8 0 nd6 112 30 0 10 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 22 0 22 1 0 1 1 0 8 1 pppxif 1416 1 0 1 1 0 1 1 0 8 1 pfrktable 1344 1 0 1 1 0 1 1 0 8 1 pfsrclim 320 2 0 2 1 0 1 1 0 8 1 pftag 88 2 0 1 1 0 1 1 0 8 0 pfqueue 320 1 0 0 1 0 1 1 0 8 0 pfstitem 24 5 0 1 1 0 1 1 0 8 0 pfstkey 128 8 0 3 1 0 1 1 0 8 0 pfstate 384 4 0 2 1 0 1 1 0 8 0 pfrule 1360 7 0 6 1 0 1 1 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 515 0 145 29 0 29 29 0 8 5 art_table 40 518 0 145 5 0 5 5 0 8 0 art_node 32 125 0 49 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 0 1 0 1 1 0 8 0 semapl 112 93 0 83 1 0 1 1 0 8 0 shmpl 112 24 0 3 1 0 1 1 0 8 0 dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 2663 0 1209 92 0 92 92 0 8 0 ffsino 256 2663 0 1209 92 0 92 92 0 8 0 nchpl 144 3642 0 1953 64 0 64 64 0 8 0 rtmask 32 4 0 4 1 0 1 1 0 8 1 vnodes 216 2987 0 0 166 0 166 166 0 8 0 namei 1024 11810 0 11808 2 0 2 2 0 8 1 kstatmem 264 60 0 38 2 0 2 2 0 8 0 scsiplug 72 2 0 2 1 0 1 1 0 8 1 scxspl 216 21471 0 21470 8 0 8 8 1 8 7 plimitpl 152 109 0 92 1 0 1 1 0 8 0 sigapl 424 994 0 953 6 0 6 6 0 8 1 knotepl 120 25255 0 25205 17 6 11 17 0 8 8 kqueuepl 184 300 0 290 4 0 4 4 0 8 3 pipepl 304 187 0 160 5 0 5 5 0 8 2 fdescpl 448 981 0 953 5 0 5 5 0 8 1 filepl 120 5508 0 5290 10 0 10 10 0 8 2 lockfpl 104 227 0 224 1 0 1 1 0 8 0 lockfspl 48 112 0 109 1 0 1 1 0 8 0 sessionpl 144 34 0 26 1 0 1 1 0 8 0 pgrppl 48 49 0 33 1 0 1 1 0 8 0 ucredpl 104 866 0 853 1 0 1 1 0 8 0 zombiepl 144 955 0 953 1 0 1 1 0 8 0 processpl 1152 994 0 953 4 0 4 4 0 8 0 procpl 664 1852 0 1804 5 0 5 5 0 8 0 sosppl 176 6 0 6 1 0 1 1 0 8 1 sockpl 552 1275 0 1239 8 0 8 8 0 8 3 mcl64k 65536 64 0 64 1 0 1 1 0 8 1 mcl12k 12288 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 6 0 6 1 0 1 1 0 8 1 mcl4k 4096 3241 0 3187 14 0 14 14 0 8 7 mcl2k2 2112 1 0 1 1 0 1 1 0 8 1 mcl2k 2048 704 0 704 1 0 1 1 0 8 1 mtagpl 96 21 0 8 1 0 1 1 0 8 0 mbufpl 256 11087 0 10917 25 4 21 25 0 8 8 bufpl 280 8373 0 2159 444 0 444 444 0 8 0 anonpl 24 162850 0 156516 45 0 45 45 0 187 6 amapchunkpl 152 25550 0 25133 27 0 27 27 0 158 8 amappl16 200 2801 0 2567 23 8 15 15 0 8 2 amappl15 192 7 0 7 1 0 1 1 0 8 1 amappl14 184 412 0 409 1 0 1 1 0 8 0 amappl13 176 134 0 124 1 0 1 1 0 8 0 amappl12 168 1224 0 1197 2 0 2 2 0 8 0 amappl11 160 2 0 2 1 0 1 1 0 8 1 amappl10 152 58 0 47 1 0 1 1 0 8 0 amappl9 144 263 0 263 1 0 1 1 0 8 1 amappl8 136 114 0 113 1 0 1 1 0 8 0 amappl7 128 149 0 137 1 0 1 1 0 8 0 amappl6 120 150 0 148 1 0 1 1 0 8 0 amappl5 112 126 0 118 1 0 1 1 0 8 0 amappl4 104 297 0 280 1 0 1 1 0 8 0 amappl3 96 5012 0 4915 3 0 3 3 0 8 0 amappl2 88 584 0 529 2 0 2 2 0 8 0 amappl1 80 13779 0 13243 15 0 15 15 0 8 1 amappl 88 7127 0 6984 4 0 4 4 0 92 0 uvmvnodes 80 111 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 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 26 0 3 1 0 1 1 0 8 0 uaddrrnd 24 981 0 953 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 981 0 953 1 0 1 1 0 8 0 vmmpekpl 168 9926 0 9893 2 0 2 2 0 8 0 vmmpepl 168 71123 0 69198 92 0 92 92 0 357 5 vmsppl 368 980 0 953 4 0 4 4 0 8 1 rwobjpl 40 21859 0 20699 13 0 13 13 0 8 0 pdppl 4096 1968 0 1906 106 40 66 80 0 8 4 pvpl 32 446134 0 434459 117 0 117 117 0 265 13 pmappl 216 980 0 953 3 0 3 3 0 8 1 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 387 0 44 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ffs_freefile(fffffd80697b3200,4f3,2000) at ffs_freefile+0x11e ffs_cgread sys/ufs/ffs/ffs_alloc.c:856 [inline] ffs_freefile(fffffd80697b3200,4f3,2000) at ffs_freefile+0x11e sys/ufs/ffs/ffs_alloc.c:1377 ffs_inode_free(fffffd80697b3200,4f3,2000) at ffs_inode_free+0x44 sys/ufs/ffs/ffs_alloc.c:1355 ufs_inactive(ffff80003c91b0f0) at ufs_inactive+0x299 sys/ufs/ufs/ufs_inode.c:94 VOP_INACTIVE(fffffd805d33edc8,ffff80003c90afb0) at VOP_INACTIVE+0xfb sys/kern/vfs_vops.c:498 vput(fffffd805d33edc8) at vput+0xdc sys/kern/vfs_subr.c:789 ufs_makeinode(2000,fffffd805d33e630,ffff80003c91b4b8,ffff80003c91b4e8) at ufs_makeinode+0x2e0 sys/ufs/ufs/ufs_vnops.c:1789 ufs_mknod(ffff80003c91b360) at ufs_mknod+0x5b sys/ufs/ufs/ufs_vnops.c:167 VOP_MKNOD(fffffd805d33e630,ffff80003c91b4b8,ffff80003c91b4e8,ffff80003c91b3e8) at VOP_MKNOD+0x101 sys/kern/vfs_vops.c:121 domknodat(ffff80003c90afb0,ffffff9c,2000000001c0,2000,205b9a) at domknodat+0x469 sys/kern/vfs_syscalls.c:1659 syscall(ffff80003c91b670) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c91b670) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd5bbaba130, count: -11 ddb> machine ddbcpu 1 No such command ddb> trace ffs_freefile(fffffd80697b3200,4f3,2000) at ffs_freefile+0x11e ffs_cgread sys/ufs/ffs/ffs_alloc.c:856 [inline] ffs_freefile(fffffd80697b3200,4f3,2000) at ffs_freefile+0x11e sys/ufs/ffs/ffs_alloc.c:1377 ffs_inode_free(fffffd80697b3200,4f3,2000) at ffs_inode_free+0x44 sys/ufs/ffs/ffs_alloc.c:1355 ufs_inactive(ffff80003c91b0f0) at ufs_inactive+0x299 sys/ufs/ufs/ufs_inode.c:94 VOP_INACTIVE(fffffd805d33edc8,ffff80003c90afb0) at VOP_INACTIVE+0xfb sys/kern/vfs_vops.c:498 vput(fffffd805d33edc8) at vput+0xdc sys/kern/vfs_subr.c:789 ufs_makeinode(2000,fffffd805d33e630,ffff80003c91b4b8,ffff80003c91b4e8) at ufs_makeinode+0x2e0 sys/ufs/ufs/ufs_vnops.c:1789 ufs_mknod(ffff80003c91b360) at ufs_mknod+0x5b sys/ufs/ufs/ufs_vnops.c:167 VOP_MKNOD(fffffd805d33e630,ffff80003c91b4b8,ffff80003c91b4e8,ffff80003c91b3e8) at VOP_MKNOD+0x101 sys/kern/vfs_vops.c:121 domknodat(ffff80003c90afb0,ffffff9c,2000000001c0,2000,205b9a) at domknodat+0x469 sys/kern/vfs_syscalls.c:1659 syscall(ffff80003c91b670) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c91b670) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd5bbaba130, count: -11