uvm_fault(0xffffffff82ab9658, 0xffff80002100fff8, 0, 1) -> d kernel: page fault trap, code=0 Stopped at ffs_indirtrunc+0x583: movq 0(%rax,%rbx,8),%r14 TID PID UID PRFLAGS PFLAGS CPU COMMAND * 17460 17383 0 0 0 0 syz-executor1274477389 ffs_indirtrunc(fffffd806d731c30,fffffffffffffff4,204740,ffffffffffffffff,0,ffff80002164f178) at ffs_indirtrunc+0x583 sys/ufs/ffs/ffs_inode.c:535 ffs_truncate(fffffd806d731c30,0,0,fffffd807f7d79c0) at ffs_truncate+0xfd5 sys/ufs/ffs/ffs_inode.c:337 ufs_setattr(ffff80002164f350) at ufs_setattr+0x6c1 sys/ufs/ufs/ufs_vnops.c:408 VOP_SETATTR(fffffd806d9df930,ffff80002164f3d0,fffffd807f7d79c0,ffff8000ffff87e8) at VOP_SETATTR+0xd0 sys/kern/vfs_vops.c:210 vn_open(ffff80002164f5a8,70f,0) at vn_open+0x431 sys/kern/vfs_vnops.c:180 doopenat(ffff8000ffff87e8,ffffff9c,20000040,70e,0,ffff80002164f790) at doopenat+0x26a sys/kern/vfs_syscalls.c:1131 syscall(ffff80002164f800) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbed50, 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(0xffffffff82ab9658, 0xffff80002100fff8, 0, 1) -> d ddb> trace ffs_indirtrunc(fffffd806d731c30,fffffffffffffff4,204740,ffffffffffffffff,0,ffff80002164f178) at ffs_indirtrunc+0x583 sys/ufs/ffs/ffs_inode.c:535 ffs_truncate(fffffd806d731c30,0,0,fffffd807f7d79c0) at ffs_truncate+0xfd5 sys/ufs/ffs/ffs_inode.c:337 ufs_setattr(ffff80002164f350) at ufs_setattr+0x6c1 sys/ufs/ufs/ufs_vnops.c:408 VOP_SETATTR(fffffd806d9df930,ffff80002164f3d0,fffffd807f7d79c0,ffff8000ffff87e8) at VOP_SETATTR+0xd0 sys/kern/vfs_vops.c:210 vn_open(ffff80002164f5a8,70f,0) at vn_open+0x431 sys/kern/vfs_vnops.c:180 doopenat(ffff8000ffff87e8,ffffff9c,20000040,70e,0,ffff80002164f790) at doopenat+0x26a sys/kern/vfs_syscalls.c:1131 syscall(ffff80002164f800) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbed50, count: -8 ddb> show registers rdi 0x2 rsi 0x2 rbp 0xffff80002164f0d0 rbx 0x1ff rdx 0xfffffd806d4f7078 rcx 0xfffffffffffffff4 rax 0xffff80002100f000 r8 0xffffffffffffffff r9 0xffff80002164f178 r10 0x5efe2c5a7e70f4fe r11 0x68689431f3ba02ed r12 0x1 r13 0xffffffffffffffff r14 0x2 r15 0xfffffd806d731c30 rip 0xffffffff814ab4e3 ffs_indirtrunc+0x583 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002164efe0 ss 0x10 ffs_indirtrunc+0x583: movq 0(%rax,%rbx,8),%r14 ddb> show proc PROC (syz-executor1274477389) pid=17460 stat=onproc flags process=0 proc=0 pri=17, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff8d28,0xffffffff82ac40d0 process=0xffff8000ffff6bc8 user=0xffff80002164a000, vmspace=0xfffffd807f016440 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND *17383 17460 35420 0 7 0 syz-executor1274477389 35420 263656 76030 0 3 0x82 nanoslp syz-executor1274477389 76030 361418 2314 0 3 0x10008a sigsusp ksh 2314 54824 81044 0 3 0x9a kqread sshd 89143 209204 1 0 3 0x100083 ttyin getty 81044 260990 1 0 3 0x88 kqread sshd 33470 384753 75721 73 3 0x1100090 kqread syslogd 75721 360892 1 0 3 0x100082 netio syslogd 3234 19475 1 0 3 0x100080 kqread resolvd 34140 22736 96478 77 3 0x100092 kqread dhcpleased 54485 112380 96478 77 3 0x100092 kqread dhcpleased 96478 161641 1 0 3 0x80 kqread dhcpleased 40786 251645 0 0 3 0x14200 bored smr 79604 226408 0 0 2 0x14200 zerothread 53209 240358 0 0 3 0x14200 aiodoned aiodoned 12519 419848 0 0 3 0x14200 syncer update 10815 61257 0 0 3 0x14200 cleaner cleaner 81958 116300 0 0 3 0x14200 reaper reaper 70064 258269 0 0 3 0x14200 pgdaemon pagedaemon 95102 208367 0 0 3 0x14200 bored viomb 52478 7275 0 0 3 0x40014200 acpi0 acpi0 15567 95843 0 0 3 0x14200 bored softnet 45008 26286 0 0 3 0x14200 bored softnet 34695 62020 0 0 3 0x14200 bored softnet 4356 161682 0 0 3 0x14200 bored softnet 67551 304612 0 0 3 0x14200 bored systqmp 6557 278240 0 0 3 0x14200 bored systq 18803 119810 0 0 3 0x40014200 bored softclock 47660 490545 0 0 3 0x40014200 idle0 1 378670 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 10135 6382K 6413K 78643K 11225 0 pcb 13 8K 8K 78643K 13 0 rtable 58 1K 2K 78643K 104 0 ifaddr 24 7K 7K 78643K 24 0 counters 19 16K 16K 78643K 19 0 ioctlops 0 0K 2K 78643K 25 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1166 73K 73K 78643K 1180 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 1K 78643K 2 0 VM map 2 0K 0K 78643K 2 0 sem 2 0K 0K 78643K 2 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 1 0K 0K 78643K 1 0 proc 55 58K 59K 78643K 226 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 11 0K 0K 78643K 11 0 ether_multi 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 25 122K 122K 78643K 25 0 exec 0 0K 2K 78643K 391 0 tdb 3 0K 0K 78643K 3 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 54 10K 10K 78643K 4444 0 UVM aobj 3 2K 2K 78643K 3 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 3 0K 0K 78643K 3 0 temp 18 4709K 4773K 78643K 5473 0 kqueue 11 16K 18K 78643K 24 0 SYN cache 2 16K 16K 78643K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 17 0 14 1 0 1 1 0 8 0 rtentry 112 23 0 1 1 0 1 1 0 8 0 unpcb 136 33 0 20 1 0 1 1 0 8 0 syncache 296 5 0 5 2 2 0 1 0 8 0 tcpcb 736 8 0 5 1 0 1 1 0 8 0 arp 88 2 0 0 1 0 1 1 0 8 0 inpcb 312 25 0 19 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 96 0 0 6 0 6 6 0 8 0 art_table 32 97 0 0 1 0 1 1 0 8 0 art_node 16 22 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1417 0 38 87 0 87 87 0 8 0 ffsino 240 1417 0 38 82 0 82 82 0 8 0 nchpl 144 1604 0 47 58 0 58 58 0 8 0 uvmvnodes 80 1427 0 0 30 0 30 30 0 8 0 vnodes 224 1427 0 0 84 0 84 84 0 8 0 namei 1024 13734 0 13734 2 1 1 1 0 8 1 kstatmem 264 6 0 0 1 0 1 1 0 8 0 scxspl 216 220546 0 220546 18 15 3 8 0 8 3 plimitpl 152 16 0 9 1 0 1 1 0 8 0 sigapl 424 3480 0 3450 4 0 4 4 0 8 0 knotepl 120 31220 0 31191 3 2 1 2 0 8 0 kqueuepl 184 20 0 13 1 0 1 1 0 8 0 pipepl 304 79 0 76 2 1 1 1 0 8 0 fdescpl 432 3464 0 3450 2 0 2 2 0 8 0 filepl 120 10601 0 10545 2 0 2 2 0 8 0 lockfpl 104 6 0 4 1 0 1 1 0 8 0 lockfspl 48 4 0 2 1 0 1 1 0 8 0 sessionpl 144 18 0 9 1 0 1 1 0 8 0 pgrppl 48 18 0 9 1 0 1 1 0 8 0 ucredpl 96 65 0 54 1 0 1 1 0 8 0 zombiepl 144 3450 0 3450 2 1 1 1 0 8 1 processpl 1000 3480 0 3450 5 1 4 5 0 8 0 procpl 672 3480 0 3450 3 0 3 3 0 8 0 sockpl 448 75 0 53 3 0 3 3 0 8 0 mcl8k 8192 9 0 9 2 2 0 1 0 8 0 mcl4k 4096 5 0 5 2 2 0 1 0 8 0 mcl2k 2048 7220 0 7192 6 2 4 6 0 8 0 mtagpl 96 3 0 3 1 1 0 1 0 8 0 mbufpl 256 21453 0 21387 7 2 5 6 0 8 0 bufpl 288 218542 0 212253 450 0 450 450 0 8 0 anonpl 24 869827 0 868050 16 3 13 13 0 188 2 amapchunkpl 152 5742 0 5658 5 1 4 5 0 158 0 amappl16 200 54233 0 54227 2 0 2 2 0 8 1 amappl13 176 32 0 31 2 1 1 1 0 8 0 amappl12 168 5 0 4 1 0 1 1 0 8 0 amappl11 160 60 0 47 1 0 1 1 0 8 0 amappl10 152 1 0 1 1 1 0 1 0 8 0 amappl9 144 483 0 481 1 0 1 1 0 8 0 amappl8 136 333 0 332 2 1 1 1 0 8 0 amappl7 128 48 0 45 1 0 1 1 0 8 0 amappl6 120 93 0 83 1 0 1 1 0 8 0 amappl5 112 3266 0 3257 1 0 1 1 0 8 0 amappl4 104 565 0 546 1 0 1 1 0 8 0 amappl3 96 353 0 334 1 0 1 1 0 8 0 amappl2 88 417 0 379 1 0 1 1 0 8 0 amappl1 80 21480 0 21110 11 2 9 9 0 8 0 amappl 88 4190 0 4153 1 0 1 1 0 92 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 128 253 0 253 1 1 0 1 0 8 0 dma64 64 6 0 6 1 1 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 3464 0 3450 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3464 0 3450 1 0 1 1 0 8 0 vmmpekpl 168 12340 0 12329 1 0 1 1 0 8 0 vmmpepl 168 130048 0 129259 44 8 36 38 0 357 0 vmsppl 272 3463 0 3450 2 1 1 2 0 8 0 rwobjpl 24 63240 0 61298 13 0 13 13 0 8 0 pdppl 4096 6934 0 6900 52 18 34 40 0 8 0 pvpl 32 1024070 0 1020431 39 7 32 33 0 265 2 pmappl 216 3463 0 3450 1 0 1 1 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 710 0 30 20 0 20 20 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ffs_indirtrunc(fffffd806d731c30,fffffffffffffff4,204740,ffffffffffffffff,0,ffff80002164f178) at ffs_indirtrunc+0x583 sys/ufs/ffs/ffs_inode.c:535 ffs_truncate(fffffd806d731c30,0,0,fffffd807f7d79c0) at ffs_truncate+0xfd5 sys/ufs/ffs/ffs_inode.c:337 ufs_setattr(ffff80002164f350) at ufs_setattr+0x6c1 sys/ufs/ufs/ufs_vnops.c:408 VOP_SETATTR(fffffd806d9df930,ffff80002164f3d0,fffffd807f7d79c0,ffff8000ffff87e8) at VOP_SETATTR+0xd0 sys/kern/vfs_vops.c:210 vn_open(ffff80002164f5a8,70f,0) at vn_open+0x431 sys/kern/vfs_vnops.c:180 doopenat(ffff8000ffff87e8,ffffff9c,20000040,70e,0,ffff80002164f790) at doopenat+0x26a sys/kern/vfs_syscalls.c:1131 syscall(ffff80002164f800) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbed50, count: -8 ddb> machine ddbcpu 1 No such command ddb> trace ffs_indirtrunc(fffffd806d731c30,fffffffffffffff4,204740,ffffffffffffffff,0,ffff80002164f178) at ffs_indirtrunc+0x583 sys/ufs/ffs/ffs_inode.c:535 ffs_truncate(fffffd806d731c30,0,0,fffffd807f7d79c0) at ffs_truncate+0xfd5 sys/ufs/ffs/ffs_inode.c:337 ufs_setattr(ffff80002164f350) at ufs_setattr+0x6c1 sys/ufs/ufs/ufs_vnops.c:408 VOP_SETATTR(fffffd806d9df930,ffff80002164f3d0,fffffd807f7d79c0,ffff8000ffff87e8) at VOP_SETATTR+0xd0 sys/kern/vfs_vops.c:210 vn_open(ffff80002164f5a8,70f,0) at vn_open+0x431 sys/kern/vfs_vnops.c:180 doopenat(ffff8000ffff87e8,ffffff9c,20000040,70e,0,ffff80002164f790) at doopenat+0x26a sys/kern/vfs_syscalls.c:1131 syscall(ffff80002164f800) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbed50, count: -8