uvm_fault(0xffffffff839c0160, 0xffff800026405ff8, 0, 1) -> d kernel: page fault trap, code=0 Stopped at ffs_indirtrunc+0x689: movq 0(%rax,%rbx,8),%rbx TID PID UID PRFLAGS PFLAGS CPU COMMAND * 99044 51224 0 0 0x4000000 0 syz-executor ffs_indirtrunc(fffffd806ee5f800,fffffffffffffff4,96880,ffffffffffffffff,0,ffff80003c930d78) at ffs_indirtrunc+0x689 sys/ufs/ffs/ffs_inode.c:495 ffs_truncate(fffffd806ee5f800,4000,0,fffffd8007ffd750) at ffs_truncate+0x1036 sys/ufs/ffs/ffs_inode.c:297 ufs_setattr(ffff80003c930ee0) at ufs_setattr+0x8e0 sys/ufs/ufs/ufs_vnops.c:403 VOP_SETATTR(fffffd8068687970,ffff80003c930f68,fffffd8007ffd750,ffff80002a78f4f0) at VOP_SETATTR+0x112 sys/kern/vfs_vops.c:210 dotruncate(ffff80002a78f4f0,fffffd8068687970,4000) at dotruncate+0x1da sys/kern/vfs_syscalls.c:2811 sys_ftruncate(ffff80002a78f4f0,ffff80003c931180,ffff80003c9310d0) at sys_ftruncate+0x208 sys/kern/vfs_syscalls.c:2865 syscall(ffff80003c931180) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c931180) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6180374f1e0, 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> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic *cpu0: uvm_fault(0xffffffff839c0160, 0xffff800026405ff8, 0, 1) -> d ddb> trace ffs_indirtrunc(fffffd806ee5f800,fffffffffffffff4,96880,ffffffffffffffff,0,ffff80003c930d78) at ffs_indirtrunc+0x689 sys/ufs/ffs/ffs_inode.c:495 ffs_truncate(fffffd806ee5f800,4000,0,fffffd8007ffd750) at ffs_truncate+0x1036 sys/ufs/ffs/ffs_inode.c:297 ufs_setattr(ffff80003c930ee0) at ufs_setattr+0x8e0 sys/ufs/ufs/ufs_vnops.c:403 VOP_SETATTR(fffffd8068687970,ffff80003c930f68,fffffd8007ffd750,ffff80002a78f4f0) at VOP_SETATTR+0x112 sys/kern/vfs_vops.c:210 dotruncate(ffff80002a78f4f0,fffffd8068687970,4000) at dotruncate+0x1da sys/kern/vfs_syscalls.c:2811 sys_ftruncate(ffff80002a78f4f0,ffff80003c931180,ffff80003c9310d0) at sys_ftruncate+0x208 sys/kern/vfs_syscalls.c:2865 syscall(ffff80003c931180) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c931180) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6180374f1e0, count: -8 ddb> show registers rdi 0x2 rsi 0x2 rbp 0xffff80003c930c50 rbx 0x7ff rdx 0 rcx 0xfffffffffffffff4 rax 0xffff800026402000 r8 0xffffffffffffffff r9 0xffff80003c930d78 r10 0xac1dc898da7dd48d r11 0xe98adeae3421e99b r12 0xfffffffffffff7f6 r13 0x1 r14 0x2 r15 0xfffffd806ee5f800 rip 0xffffffff83188879 ffs_indirtrunc+0x689 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c930b60 ss 0x10 ffs_indirtrunc+0x689: movq 0(%rax,%rbx,8),%rbx ddb> show proc PROC (syz-executor) tid=99044 pid=51224 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=50, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a78e2c8,0xffff80003a8dda20 process=0xffff80002a750da0 user=0xffff80003c92c000, vmspace=0xfffffd8077d532e8 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 34806 5203 17628 0 3 0x80 fsleep syz-executor 34806 85234 17628 0 2 0x4000000 syz-executor 51224 23796 54938 0 3 0x80 fsleep syz-executor *51224 99044 54938 0 7 0x4000000 syz-executor 70997 409044 38694 0 3 0x80 fsleep syz-executor 70997 380030 38694 0 3 0x4000080 fsleep syz-executor 70997 499826 38694 0 3 0x4000080 ttyout syz-executor 70997 59155 38694 0 3 0x4000080 ttyout syz-executor 49324 352439 10577 0 3 0x80 fsleep syz-executor 49324 170270 10577 0 3 0x4000080 fifor syz-executor 88223 37858 19490 -1 3 0x90 nanoslp syz-executor 88223 387227 19490 -1 3 0x4000090 kqread syz-executor 88223 441512 19490 -1 3 0x4000090 fsleep syz-executor 73453 462150 38992 0 3 0x80 fsleep syz-executor 73453 117079 38992 0 3 0x4000080 sbwait syz-executor 73453 414009 38992 0 3 0x4000080 sbwait syz-executor 31647 414218 24584 60929 3 0x90 fsleep syz-executor 31647 2083 24584 60929 3 0x4000090 netcon syz-executor 69715 193882 2740 0 3 0x80 fsleep syz-executor 69715 61449 2740 0 3 0x4000080 kqsel syz-executor 29893 68408 0 0 3 0x14280 nfsidl nfsio 63389 448671 0 0 3 0x14280 nfsidl nfsio 18530 44439 0 0 3 0x14280 nfsidl nfsio 15712 254249 0 0 3 0x14280 nfsidl nfsio 86915 462862 0 0 3 0x14280 nfsidl nfsio 75034 120408 0 0 3 0x14280 nfsidl nfsio 85646 439488 0 0 3 0x14280 nfsidl nfsio 63357 169755 0 0 3 0x14280 nfsidl nfsio 43048 73741 0 0 3 0x14280 nfsidl nfsio 15910 496498 0 0 3 0x14280 nfsidl nfsio 1948 34302 0 0 3 0x14280 nfsidl nfsio 22778 234974 0 0 3 0x14280 nfsidl nfsio 59645 429644 0 0 3 0x14280 nfsidl nfsio 62211 124284 0 0 3 0x14280 nfsidl nfsio 50200 404024 0 0 3 0x14280 nfsidl nfsio 52249 501156 0 0 3 0x14280 nfsidl nfsio 64859 185122 0 0 3 0x14280 nfsidl nfsio 63182 172345 0 0 3 0x14280 nfsidl nfsio 77440 45379 0 0 3 0x14280 nfsidl nfsio 41948 311940 0 0 3 0x14280 nfsidl nfsio 30853 183252 1 0 3 0x100083 ttyin getty 38694 55602 82268 0 2 0xc82 syz-executor 10577 483845 82268 0 3 0x82 nanoslp syz-executor 2740 240047 82268 0 3 0x82 nanoslp syz-executor 24584 402363 82268 0 3 0x82 nanoslp syz-executor 54938 111789 82268 0 3 0x82 nanoslp syz-executor 19490 300975 82268 0 3 0x82 nanoslp syz-executor 17628 122354 82268 0 3 0x82 nanoslp syz-executor 38992 156002 82268 0 3 0x82 nanoslp syz-executor 82268 492845 1 0 3 0x82 kqread syz-executor 59837 260608 1 0 3 0x8a kqread sshd 68317 244917 49027 73 3 0x1100090 kqread syslogd 49027 301079 1 0 3 0x100082 sbwait syslogd 91391 227976 1 0 3 0x100080 kqread resolvd 63515 129627 44445 77 3 0x100092 kqread dhcpleased 17146 259961 44445 77 3 0x100092 kqread dhcpleased 44445 163964 1 0 3 0x80 kqread dhcpleased 64149 260564 0 0 3 0x14200 bored smr 59142 94851 0 0 2 0x14200 zerothread 86386 369445 0 0 3 0x14200 aiodoned aiodoned 73506 301545 0 0 3 0x14200 syncer update 46040 127878 0 0 3 0x14200 cleaner cleaner 76484 85208 0 0 3 0x14200 reaper reaper 65877 483092 0 0 3 0x14200 pgdaemon pagedaemon 76215 473539 0 0 3 0x14200 bored viomb 85932 439914 0 0 3 0x40014200 acpi0 acpi0 96758 121069 0 0 2 0x14200 softnet0 38604 300549 0 0 3 0x14200 bored systqmp 31670 471786 0 0 3 0x14200 bored systq 70463 221469 0 0 3 0x40014200 tmoslp softclock 30069 140164 0 0 3 0x40014200 idle0 1 384181 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 11049 12180K 12776K 166960K 13525 0 pcb 17 16K 18K 166960K 244 0 rtable 259 11K 12K 166960K 563 0 pf 38 14K 20K 166960K 148 0 ifaddr 42 7K 8K 166960K 90 0 ifgroup 55 2K 2K 166960K 126 0 sysctl 3 1K 9K 166960K 21 0 counters 34 17K 18K 166960K 69 0 ioctlops 0 0K 4K 166960K 344 0 iov 0 0K 24K 166960K 69 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1422 89K 90K 166960K 2590 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 12 0 VM map 2 1K 1K 166960K 2 0 sem 24 3K 3K 166960K 78 0 dirhash 12 2K 2K 166960K 27 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 236K 166960K 1127 0 sigio 0 0K 0K 166960K 16 0 proc 60 59K 91K 166960K 684 0 subproc 72 4K 4K 166960K 101 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 103 0 in_multi 101 7K 7K 166960K 167 0 ether_multi 1 0K 0K 166960K 5 0 mrt 1 0K 0K 166960K 26 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 621 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 207 134K 166K 166960K 11088 0 UVM aobj 28 6K 6K 166960K 31 0 pinsyscall 34 68K 92K 166960K 2303 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 37 0 NDP 12 0K 2K 166960K 58 0 temp 66 9117K 9184K 166960K 50202 0 kqueue 12 18K 29K 166960K 191 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 120 126 0 122 2 0 2 2 0 8 1 rtentry 136 172 0 62 5 0 5 5 0 8 0 unpcb 144 741 0 725 9 3 6 6 0 8 5 syncache 336 8 0 8 2 1 1 1 0 8 1 tcpcb 736 350 0 344 7 0 7 7 0 8 6 arp 96 30 0 15 1 0 1 1 0 8 0 ipq 40 3 0 0 1 0 1 1 0 8 0 ipqe 40 3 0 0 1 0 1 1 0 8 0 inpcb 328 1007 0 997 13 4 9 12 0 8 8 ip6q 72 1 0 0 1 0 1 1 0 8 0 nd6 112 45 0 16 1 0 1 1 0 8 0 pkpcb 40 5 0 5 2 1 1 1 0 8 1 kcovpl 48 11 0 3 1 0 1 1 0 8 0 ppxss 1072 26 0 26 2 1 1 1 0 8 1 pppxif 1416 4 0 4 1 0 1 1 0 8 1 pfstscr 40 16 0 4 1 0 1 1 0 8 0 pffrag 232 9 0 1 1 0 1 1 0 482 0 pffrnode 88 9 0 1 1 0 1 1 0 8 0 pffrent 40 55 0 46 1 0 1 1 0 8 0 pfrktable 1344 3 0 1 1 0 1 1 0 8 0 pfsrclim 320 6 0 6 1 0 1 1 0 8 1 pfanchor 1288 7 0 1 1 0 1 1 0 8 0 pftag 88 3 0 0 1 0 1 1 0 8 0 pfqueue 320 1 0 0 1 0 1 1 0 8 0 pfstitem 24 17 0 4 1 0 1 1 0 8 0 pfstkey 128 17 0 5 1 0 1 1 0 8 0 pfstate 384 9 0 2 1 0 1 1 0 8 0 pfrule 1360 13 0 11 2 1 1 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 734 0 217 34 0 34 34 0 8 1 art_table 40 736 0 217 6 0 6 6 0 8 0 art_node 32 172 0 73 1 0 1 1 0 8 0 sysvmsgpl 40 11 0 4 1 0 1 1 0 8 0 semupl 112 2 0 2 2 1 1 1 0 8 1 semapl 72 71 0 49 1 0 1 1 0 8 0 shmpl 112 28 0 3 1 0 1 1 0 8 0 dirhash 1024 27 0 10 3 0 3 3 0 8 0 dino2pl 256 3479 0 2017 93 0 93 93 0 8 1 ffsino 256 3479 0 2017 93 0 93 93 0 8 1 nchpl 144 4999 0 3291 64 0 64 64 0 8 0 rtmask 32 6 0 6 1 0 1 1 0 8 1 vnodes 216 4311 0 0 240 0 240 240 0 8 0 namei 1024 16970 0 16970 2 1 1 2 0 8 1 pfiaddrpl 120 1 0 0 1 0 1 1 0 8 0 kstatmem 264 73 0 48 2 0 2 2 0 8 0 scsiplug 72 6 0 6 2 1 1 1 0 8 1 scxspl 216 17401 0 17401 10 2 8 8 1 8 8 plimitpl 152 326 0 312 1 0 1 1 0 8 0 sigapl 424 1426 0 1366 8 1 7 7 0 8 0 knotepl 120 40608 0 40503 11 1 10 10 0 8 6 kqueuepl 184 327 0 253 4 0 4 4 0 8 0 pipepl 304 291 0 264 8 0 8 8 0 8 5 fdescpl 448 1392 0 1365 4 0 4 4 0 8 0 filepl 120 8493 0 8219 13 2 11 11 0 8 2 lockfpl 104 837 0 835 2 0 2 2 0 8 1 lockfspl 48 234 0 232 1 0 1 1 0 8 0 sessionpl 144 128 0 121 1 0 1 1 0 8 0 pgrppl 48 150 0 135 1 0 1 1 0 8 0 ucredpl 104 1579 0 1566 1 0 1 1 0 8 0 zombiepl 144 1366 0 1366 1 0 1 1 0 8 1 processpl 1152 1426 0 1366 5 0 5 5 0 8 0 procpl 664 2876 0 2804 7 0 7 7 0 8 0 sosppl 176 7 0 7 1 0 1 1 0 8 1 sockpl 552 1970 0 1940 19 8 11 12 0 8 8 mcl64k 65536 91 0 89 2 1 1 1 0 8 0 mcl16k 16384 4 0 4 2 1 1 1 0 8 1 mcl9k128 9344 5 0 5 1 0 1 1 0 8 1 mcl8k 8192 15 0 15 2 1 1 1 0 8 1 mcl4k 4096 3792 0 3737 16 7 9 15 0 8 1 mcl2k2 2112 1 0 1 1 0 1 1 0 8 1 mcl2k 2048 960 0 950 4 2 2 3 0 8 0 mtagpl 96 10 0 5 1 0 1 1 0 8 0 mbufpl 256 13993 0 13802 21 5 16 18 0 8 2 bufpl 272 6620 0 404 415 0 415 415 0 8 0 anonpl 24 178191 0 175376 70 22 48 48 0 186 23 amapchunkpl 152 37522 0 37069 38 4 34 34 0 158 15 amappl16 200 2780 0 2743 31 18 13 17 0 8 8 amappl15 192 8 0 8 1 1 0 1 0 8 0 amappl14 184 445 0 445 1 0 1 1 0 8 1 amappl13 176 128 0 120 1 0 1 1 0 8 0 amappl12 168 1642 0 1616 2 0 2 2 0 8 0 amappl11 160 5 0 4 1 0 1 1 0 8 0 amappl10 152 57 0 46 1 0 1 1 0 8 0 amappl9 144 273 0 273 1 1 0 1 0 8 0 amappl8 136 141 0 140 1 0 1 1 0 8 0 amappl7 128 159 0 148 1 0 1 1 0 8 0 amappl6 120 177 0 177 1 0 1 1 0 8 1 amappl5 112 90 0 84 1 0 1 1 0 8 0 amappl4 104 291 0 274 1 0 1 1 0 8 0 amappl3 96 7662 0 7556 4 0 4 4 0 8 1 amappl2 88 558 0 510 2 0 2 2 0 8 0 amappl1 80 14695 0 14301 13 1 12 13 0 8 2 amappl 88 10164 0 10013 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 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 255 0 255 2 1 1 1 0 8 1 dma64 64 7 0 7 2 1 1 1 0 8 1 dma32 32 8 0 8 2 1 1 1 0 8 1 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 30 0 3 1 0 1 1 0 8 0 uaddrrnd 24 1392 0 1365 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1392 0 1365 1 0 1 1 0 8 0 vmmpekpl 168 12115 0 12067 3 0 3 3 0 8 0 vmmpepl 168 92745 0 91195 96 4 92 92 0 357 20 vmsppl 368 1391 0 1365 4 1 3 4 0 8 0 rwobjpl 40 25241 0 24348 15 2 13 13 0 8 2 pdppl 4096 2790 0 2730 96 34 62 76 0 8 2 pvpl 32 560444 0 553117 157 38 119 120 0 265 42 pmappl 216 1391 0 1365 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 807 0 57 22 0 22 22 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ffs_indirtrunc(fffffd806ee5f800,fffffffffffffff4,96880,ffffffffffffffff,0,ffff80003c930d78) at ffs_indirtrunc+0x689 sys/ufs/ffs/ffs_inode.c:495 ffs_truncate(fffffd806ee5f800,4000,0,fffffd8007ffd750) at ffs_truncate+0x1036 sys/ufs/ffs/ffs_inode.c:297 ufs_setattr(ffff80003c930ee0) at ufs_setattr+0x8e0 sys/ufs/ufs/ufs_vnops.c:403 VOP_SETATTR(fffffd8068687970,ffff80003c930f68,fffffd8007ffd750,ffff80002a78f4f0) at VOP_SETATTR+0x112 sys/kern/vfs_vops.c:210 dotruncate(ffff80002a78f4f0,fffffd8068687970,4000) at dotruncate+0x1da sys/kern/vfs_syscalls.c:2811 sys_ftruncate(ffff80002a78f4f0,ffff80003c931180,ffff80003c9310d0) at sys_ftruncate+0x208 sys/kern/vfs_syscalls.c:2865 syscall(ffff80003c931180) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c931180) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6180374f1e0, count: -8 ddb> machine ddbcpu 1 No such command ddb>