uvm_fault(0xffffffff839367d8, 0xffff800026835ff8, 0, 1) -> d kernel: page fault trap, code=0 Stopped at ffs_indirtrunc+0x6a9: movq 0(%rax,%rbx,8),%r14 TID PID UID PRFLAGS PFLAGS CPU COMMAND * 85746 22359 0 0 0x4000000 0K syz-executor 422990 14527 0 0x2 0 1 syz-executor ffs_indirtrunc(fffffd806dcbe488,fffffffffffffff4,1e3220,ffffffffffffffff,0,ffff80002a43d980) at ffs_indirtrunc+0x6a9 sys/ufs/ffs/ffs_inode.c:495 ffs_truncate(fffffd806dcbe488,0,0,fffffd807f7d2548) at ffs_truncate+0x1063 sys/ufs/ffs/ffs_inode.c:297 ufs_setattr(ffff80002a43daf0) at ufs_setattr+0x912 sys/ufs/ufs/ufs_vnops.c:403 VOP_SETATTR(fffffd8068f98050,ffff80002a43db78,fffffd807f7d2548,ffff80002a3e27e0) at VOP_SETATTR+0x11c sys/kern/vfs_vops.c:210 vn_open(ffff80002a43dd48,70f,0) at vn_open+0x61f sys/kern/vfs_vnops.c:174 doopenat(ffff80002a3e27e0,ffffff9c,200000000040,70e,0,ffff80002a43def0) at doopenat+0x32e sys/kern/vfs_syscalls.c:1139 syscall(ffff80002a43dfa0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a43dfa0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc7eaf202930, count: 7 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: uvm_fault(0xffffffff839367d8, 0xffff800026835ff8, 0, 1) -> d ddb{0}> trace ffs_indirtrunc(fffffd806dcbe488,fffffffffffffff4,1e3220,ffffffffffffffff,0,ffff80002a43d980) at ffs_indirtrunc+0x6a9 sys/ufs/ffs/ffs_inode.c:495 ffs_truncate(fffffd806dcbe488,0,0,fffffd807f7d2548) at ffs_truncate+0x1063 sys/ufs/ffs/ffs_inode.c:297 ufs_setattr(ffff80002a43daf0) at ufs_setattr+0x912 sys/ufs/ufs/ufs_vnops.c:403 VOP_SETATTR(fffffd8068f98050,ffff80002a43db78,fffffd807f7d2548,ffff80002a3e27e0) at VOP_SETATTR+0x11c sys/kern/vfs_vops.c:210 vn_open(ffff80002a43dd48,70f,0) at vn_open+0x61f sys/kern/vfs_vnops.c:174 doopenat(ffff80002a3e27e0,ffffff9c,200000000040,70e,0,ffff80002a43def0) at doopenat+0x32e sys/kern/vfs_syscalls.c:1139 syscall(ffff80002a43dfa0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a43dfa0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc7eaf202930, count: -8 ddb{0}> show registers rdi 0x2 rsi 0x2 rbp 0xffff80002a43d850 rbx 0x7ff rdx 0 rcx 0xffff80002a3e27e0 rax 0xffff800026832000 r8 0xffffffffffffffff r9 0xffff80002a43d980 r10 0xffff80002a43d560 r11 0xe2d3fdae5b6fc227 r12 0x1 r13 0 r14 0x2 r15 0xfffffd806dcbe488 rip 0xffffffff832aeff9 ffs_indirtrunc+0x6a9 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002a43d760 ss 0x10 ffs_indirtrunc+0x6a9: movq 0(%rax,%rbx,8),%r14 ddb{0}> show proc PROC (syz-executor) tid=85746 pid=22359 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=84, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a3fd9d8,0xffff80002a3e2fa0 process=0xffff80003c57c4c0 user=0xffff80002a439000, vmspace=0xfffffd806a9b81f8 estcpu=34, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 14714 71228 70674 0 2 0 syz-executor 14714 212385 70674 0 2 0x4000480 syz-executor 14714 19023 70674 0 3 0x4000080 fsleep syz-executor 78823 422028 879 0 2 0 syz-executor 78823 177681 879 0 3 0x4000080 fsleep syz-executor 78823 328130 879 0 3 0x4000080 fsleep syz-executor 22359 259027 29879 0 2 0 syz-executor *22359 85746 29879 0 7 0x4000000 syz-executor 94325 483995 65583 0 3 0x80 nanoslp syz-executor 94325 120058 65583 0 3 0x4000080 ttyout syz-executor 94325 29998 65583 0 3 0x4000080 fsleep syz-executor 96229 125763 64936 0 3 0x80 nanoslp syz-executor 96229 162664 64936 0 3 0x4000080 fifor syz-executor 96229 22304 64936 0 3 0x4000080 fsleep syz-executor 50403 38355 1 0 3 0x100083 ttyin getty 29879 293743 14527 0 3 0x82 nanoslp syz-executor 10613 297942 0 0 3 0x14280 nfsidl nfsio 91585 408051 0 0 3 0x14280 nfsidl nfsio 65726 421091 0 0 3 0x14280 nfsidl nfsio 22490 208227 0 0 3 0x14280 nfsidl nfsio 49026 153163 0 0 3 0x14280 nfsidl nfsio 33375 303042 0 0 3 0x14280 nfsidl nfsio 90761 120144 0 0 3 0x14280 nfsidl nfsio 91511 23015 0 0 3 0x14280 nfsidl nfsio 31671 387144 0 0 3 0x14280 nfsidl nfsio 96867 119050 0 0 3 0x14280 nfsidl nfsio 52541 377298 0 0 3 0x14280 nfsidl nfsio 17131 185672 0 0 3 0x14280 nfsidl nfsio 21313 80838 0 0 3 0x14280 nfsidl nfsio 54198 504213 0 0 3 0x14280 nfsidl nfsio 53627 264084 0 0 3 0x14280 nfsidl nfsio 63561 362450 0 0 3 0x14280 nfsidl nfsio 44341 231263 0 0 3 0x14280 nfsidl nfsio 74927 174649 0 0 3 0x14280 nfsidl nfsio 34818 406104 0 0 3 0x14280 nfsidl nfsio 54505 389966 0 0 3 0x14280 nfsidl nfsio 65583 239358 14527 0 3 0x82 nanoslp syz-executor 879 411022 14527 0 3 0x82 nanoslp syz-executor 4017 322101 0 0 3 0x14200 bored sosplice 5017 326385 14527 0 3 0x82 nanoslp syz-executor 64936 34238 14527 0 3 0x82 nanoslp syz-executor 70674 92411 14527 0 3 0x82 nanoslp syz-executor 24079 291482 14527 0 3 0x82 nanoslp syz-executor 14527 422990 45267 0 7 0x2 syz-executor 45267 201974 76145 0 3 0x10008a sigsusp ksh 76145 50013 38893 0 3 0x98 kqread sshd-session 38893 294692 74937 0 3 0x92 kqread sshd-session 74937 2158 1 0 3 0x88 kqread sshd 54973 49118 17375 74 3 0x1100092 bpf pflogd 17375 462782 1 0 3 0x80 sbwait pflogd 9317 118421 79281 73 3 0x1100090 kqread syslogd 79281 301148 1 0 3 0x100082 sbwait syslogd 55734 496080 1 0 3 0x100080 kqread resolvd 49693 387090 7589 77 3 0x100092 kqread dhcpleased 58364 307287 7589 77 3 0x100092 kqread dhcpleased 7589 522324 1 0 3 0x80 kqread dhcpleased 94373 175119 0 0 3 0x14200 bored smr 79352 386277 0 0 3 0x14200 pgzero zerothread 18037 87828 0 0 3 0x14200 aiodoned aiodoned 19514 468446 0 0 3 0x14200 syncer update 15957 361348 0 0 3 0x14200 cleaner cleaner 2553 302939 0 0 3 0x14200 reaper reaper 79855 16067 0 0 3 0x14200 pgdaemon pagedaemon 42966 373254 0 0 3 0x14200 bored viomb 76138 427446 0 0 3 0x40014200 acpi0 acpi0 37261 517508 0 0 3 0x40014200 idle1 1894 471626 0 0 3 0x14200 bored softnet3 66495 119145 0 0 3 0x14200 bored softnet2 71329 357955 0 0 3 0x14200 bored softnet1 36626 246518 0 0 3 0x14200 bored softnet0 42443 390437 0 0 3 0x14200 bored systqmp 25474 347037 0 0 3 0x14200 bored systq 66978 58163 0 0 3 0x14200 tmoslp softclockmp 3677 53131 0 0 2 0x40014200 softclock 11535 300520 0 0 3 0x40014200 idle0 1 196768 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 22359 (syz-executor) thread 0xffff80002a3e27e0 (85746) ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10216 11232K 11500K 166960K 14811 0 pcb 17 16K 18K 166960K 447 0 rtable 225 12K 13K 166960K 872 0 pf 35 17K 21K 166960K 192 0 ifaddr 37 6K 8K 166960K 134 0 ifgroup 55 2K 2K 166960K 249 0 sysctl 4 1K 1K 166960K 8 0 counters 64 36K 37K 166960K 372 0 ioctlops 0 0K 4K 166960K 1787 0 iov 0 0K 20K 166960K 175 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1450 91K 92K 166960K 3230 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 10K 18K 166960K 44 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 73 0 dirhash 12 2K 2K 166960K 48 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 110K 166960K 1968 0 sigio 0 0K 0K 166960K 40 0 proc 72 91K 128K 166960K 827 0 subproc 72 4K 4K 166960K 111 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 298 0 in_multi 74 5K 7K 166960K 211 0 ether_multi 1 0K 0K 166960K 11 0 mrt 2 0K 0K 166960K 7 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 109 493K 493K 166960K 109 0 exec 0 0K 1K 166960K 757 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 261 170K 186K 166960K 19638 0 UVM aobj 75 5K 5K 166960K 84 0 pinsyscall 42 84K 108K 166960K 3238 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 85 0 NDP 12 0K 2K 166960K 94 0 temp 81 8692K 8948K 166960K 79471 0 kqueue 14 22K 30K 166960K 335 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 24 0 0 1 0 1 1 0 8 0 rtpcb 120 325 0 322 6 5 1 3 0 8 0 rtentry 168 201 0 110 5 0 5 5 0 8 0 unpcb 144 1652 0 1633 15 11 4 6 0 8 3 syncache 336 12 0 12 5 4 1 1 0 8 1 tcpqe 32 7 0 7 3 2 1 1 0 8 1 tcpcb 808 701 0 695 13 8 5 8 0 8 4 arp 120 34 0 16 1 0 1 1 0 8 0 inpcb 376 2211 0 2202 17 9 8 10 0 8 6 nd6 136 43 0 19 1 0 1 1 0 8 0 pkpcb 40 15 0 15 3 2 1 1 0 8 1 kcovpl 48 12 0 4 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 0 1 1 0 8 1 ppxss 1168 126 0 126 1 0 1 1 0 8 1 pppxif 1480 11 0 11 3 2 1 1 0 8 1 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 12 0 4 1 0 1 1 0 482 0 pffrnode 88 11 0 3 1 0 1 1 0 8 0 pffrent 40 53 0 45 1 0 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 1 0 0 1 0 1 1 0 8 0 pfanchor 1288 1 0 0 1 0 1 1 0 8 0 pftag 88 3 0 1 2 1 1 1 0 8 0 pfstitem 24 108 0 48 1 0 1 1 0 8 0 pfstkey 128 110 0 50 3 0 3 3 0 8 0 pfstate 376 109 0 49 7 0 7 7 0 8 0 pfrule 1344 28 0 22 2 1 1 2 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 732 0 375 31 4 27 29 0 8 2 art_table 32 735 0 375 4 0 4 4 0 8 0 art_node 16 191 0 112 1 0 1 1 0 8 0 sysvmsgpl 40 20 0 10 1 0 1 1 0 8 0 semupl 112 2 0 2 2 1 1 1 0 8 1 semapl 112 70 0 60 1 0 1 1 0 8 0 shmpl 112 81 0 9 3 0 3 3 0 8 0 dirhash 1024 42 0 25 3 0 3 3 0 8 0 dino2pl 256 5086 0 3577 95 0 95 95 0 8 0 ffsino 280 5086 0 3577 109 0 109 109 0 8 0 nchpl 144 7870 0 7318 64 40 24 64 0 8 0 rtmask 32 12 0 12 3 2 1 1 0 8 1 uvmvnodes 80 3946 0 0 81 0 81 81 0 8 0 vnodes 216 3946 0 0 220 0 220 220 0 8 0 namei 1024 27008 0 27008 2 1 1 2 0 8 1 percpumem 16 200 0 154 1 0 1 1 0 8 0 kstatmem 264 140 0 116 3 0 3 3 0 8 1 scsiplug 72 13 0 13 3 2 1 1 0 8 1 scxspl 216 22923 0 22923 14 12 2 8 1 8 2 plimitpl 152 372 0 352 1 0 1 1 0 8 0 sigapl 424 2300 0 2230 10 1 9 9 0 8 0 futexpl 64 27784 0 27779 1 0 1 1 0 8 0 knotepl 120 577 0 0 17 0 17 17 0 8 0 kqueuepl 216 781 0 770 9 7 2 5 0 8 1 pipepl 328 310 0 283 5 2 3 5 0 8 0 fdescpl 504 2256 0 2225 5 0 5 5 0 8 0 filepl 152 15244 0 15009 24 11 13 18 0 8 2 lockfpl 104 981 0 978 4 2 2 3 0 8 1 lockfspl 48 262 0 259 1 0 1 1 0 8 0 sessionpl 144 37 0 28 1 0 1 1 0 8 0 pgrppl 48 76 0 59 1 0 1 1 0 8 0 ucredpl 104 2446 0 2433 1 0 1 1 0 8 0 zombiepl 144 2233 0 2230 1 0 1 1 0 8 0 processpl 1176 2300 0 2230 6 0 6 6 0 8 0 procpl 656 5312 0 5233 8 0 8 8 0 8 0 srpgc 96 8 0 8 2 2 0 1 0 8 0 sosppl 168 10 0 10 3 2 1 1 0 8 1 sockpl 688 4297 0 4266 40 30 10 21 0 8 6 mcl64k 65536 8 0 0 1 0 1 1 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 119 0 0 15 0 15 15 0 8 0 mcl2k 2048 27 0 0 4 0 4 4 0 8 0 mtagpl 96 145 0 0 4 0 4 4 0 8 0 mbufpl 256 6898 0 0 430 0 430 430 0 8 0 bufpl 280 8133 0 1979 440 0 440 440 0 8 0 anonpl 24 298344 0 291546 64 7 57 57 0 184 2 amapchunkpl 152 64327 0 63711 40 5 35 36 0 158 9 amappl16 200 5669 0 5525 34 24 10 15 0 8 0 amappl15 192 10 0 9 2 1 1 1 0 8 0 amappl14 184 236 0 224 1 0 1 1 0 8 0 amappl13 176 4 0 3 2 1 1 1 0 8 0 amappl12 168 2993 0 2961 4 1 3 3 0 8 0 amappl11 160 55 0 41 1 0 1 1 0 8 0 amappl10 152 6 0 6 2 2 0 1 0 8 0 amappl9 144 275 0 274 1 0 1 1 0 8 0 amappl8 136 28 0 25 1 0 1 1 0 8 0 amappl7 128 128 0 115 1 0 1 1 0 8 0 amappl6 120 231 0 227 1 0 1 1 0 8 0 amappl5 112 208 0 198 1 0 1 1 0 8 0 amappl4 104 388 0 367 1 0 1 1 0 8 0 amappl3 96 13448 0 13330 5 1 4 4 0 8 0 amappl2 88 788 0 725 2 0 2 2 0 8 0 amappl1 80 18313 0 17713 18 3 15 16 0 8 0 amappl 88 18434 0 18249 5 0 5 5 0 92 0 dma65536 65536 1 0 1 1 1 0 1 0 8 0 dma16384 16384 1 0 1 1 1 0 1 0 8 0 dma4096 4096 3 0 3 3 3 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 7 0 7 2 2 0 1 0 8 0 dma128 128 255 0 255 3 2 1 1 0 8 1 dma64 64 7 0 7 2 2 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 83 0 9 2 0 2 2 0 8 0 uaddrrnd 24 2256 0 2225 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2256 0 2225 1 0 1 1 0 8 0 vmmpekpl 168 18554 0 18497 3 0 3 3 0 8 0 vmmpepl 168 145905 0 143765 107 5 102 102 0 357 4 vmsppl 456 2255 0 2225 7 2 5 5 0 8 0 rwobjpl 64 41463 0 36369 85 1 84 84 0 8 0 pdppl 4096 4520 0 4450 120 48 72 86 0 8 2 pvpl 32 18008 0 0 145 0 145 145 0 265 0 pmappl 248 2255 0 2225 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 743 0 75 20 0 20 20 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace ffs_indirtrunc(fffffd806dcbe488,fffffffffffffff4,1e3220,ffffffffffffffff,0,ffff80002a43d980) at ffs_indirtrunc+0x6a9 sys/ufs/ffs/ffs_inode.c:495 ffs_truncate(fffffd806dcbe488,0,0,fffffd807f7d2548) at ffs_truncate+0x1063 sys/ufs/ffs/ffs_inode.c:297 ufs_setattr(ffff80002a43daf0) at ufs_setattr+0x912 sys/ufs/ufs/ufs_vnops.c:403 VOP_SETATTR(fffffd8068f98050,ffff80002a43db78,fffffd807f7d2548,ffff80002a3e27e0) at VOP_SETATTR+0x11c sys/kern/vfs_vops.c:210 vn_open(ffff80002a43dd48,70f,0) at vn_open+0x61f sys/kern/vfs_vnops.c:174 doopenat(ffff80002a3e27e0,ffffff9c,200000000040,70e,0,ffff80002a43def0) at doopenat+0x32e sys/kern/vfs_syscalls.c:1139 syscall(ffff80002a43dfa0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a43dfa0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc7eaf202930, count: -8 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff800029a9bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff839fc750) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff839fc750) at __mp_lock+0x192 sys/kern/kern_lock.c:144 syscall(ffff80002a3ac510) at syscall+0xae6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3ac510) at syscall+0xae6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x79df74956df0, count: 9 ddb{1}> trace x86_ipi_db(ffff800029a9bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff839fc750) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff839fc750) at __mp_lock+0x192 sys/kern/kern_lock.c:144 syscall(ffff80002a3ac510) at syscall+0xae6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3ac510) at syscall+0xae6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x79df74956df0, count: -6