uvm_fault(0xffffffff839da558, 0xffff800023115ff8, 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 *422675 39236 0 0x2 0 0 syz-executor ffs_indirtrunc(fffff0806fb9a300,fffffffffffffff4,97140,ffffffffffffffff,0,ffff80002a79b008) at ffs_indirtrunc+0x689 sys/ufs/ffs/ffs_inode.c:495 ffs_truncate(fffff0806fb9a300,0,0,ffffffffffffffff) at ffs_truncate+0x1036 sys/ufs/ffs/ffs_inode.c:297 ufs_inactive(ffff80002a79b160) at ufs_inactive+0x1ff sys/ufs/ufs/ufs_inode.c:84 VOP_INACTIVE(fffff0806c224a68,ffff80002a7d34f0) at VOP_INACTIVE+0xfb sys/kern/vfs_vops.c:498 vput(fffff0806c224a68) at vput+0xdc sys/kern/vfs_subr.c:795 VOP_REMOVE(fffff0806c224708,fffff0806c224a68,ffff80002a79b2c8) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336 dounlinkat(ffff80002a7d34f0,ffffff9c,727ef029e1b0,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1843 syscall(ffff80002a79b430) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a79b430) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x727ef029e660, count: 6 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(0xffffffff839da558, 0xffff800023115ff8, 0, 1) -> d ddb> show kasan No such command ddb> trace ffs_indirtrunc(fffff0806fb9a300,fffffffffffffff4,97140,ffffffffffffffff,0,ffff80002a79b008) at ffs_indirtrunc+0x689 sys/ufs/ffs/ffs_inode.c:495 ffs_truncate(fffff0806fb9a300,0,0,ffffffffffffffff) at ffs_truncate+0x1036 sys/ufs/ffs/ffs_inode.c:297 ufs_inactive(ffff80002a79b160) at ufs_inactive+0x1ff sys/ufs/ufs/ufs_inode.c:84 VOP_INACTIVE(fffff0806c224a68,ffff80002a7d34f0) at VOP_INACTIVE+0xfb sys/kern/vfs_vops.c:498 vput(fffff0806c224a68) at vput+0xdc sys/kern/vfs_subr.c:795 VOP_REMOVE(fffff0806c224708,fffff0806c224a68,ffff80002a79b2c8) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336 dounlinkat(ffff80002a7d34f0,ffffff9c,727ef029e1b0,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1843 syscall(ffff80002a79b430) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a79b430) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x727ef029e660, count: -9 ddb> show registers rdi 0x2 rsi 0x2 rbp 0xffff80002a79aee0 rbx 0x7ff rdx 0 rcx 0xfffffffffffffff4 rax 0xffff800023112000 r8 0xffffffffffffffff r9 0xffff80002a79b008 r10 0xc565244fb4463853 r11 0xdf334875c0288fc3 r12 0xfffffffffffff7f6 r13 0x1 r14 0x2 r15 0xfffff0806fb9a300 rip 0xffffffff81c54d99 ffs_indirtrunc+0x689 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002a79adf0 ss 0x10 ffs_indirtrunc+0x689: movq 0(%rax,%rbx,8),%rbx ddb> show proc PROC (syz-executor) tid=422675 pid=39236 tcnt=1 stat=onproc flags process=2 proc=0 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a7d2a90,0xffff80002a766a80 process=0xffff80002a747188 user=0xffff80002a796000, vmspace=0xfffff0807f22acf0 estcpu=36, cpticks=2, pctcpu=0.1, user=0, sys=2, intr=0 ddb> ps PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND 84202 472942 88090 0 2 0 0 syz-executor 84202 181881 88090 0 3 0 0x4000088 kqread syz-executor 98106 217358 61089 0 2 0 0 syz-executor 98106 11966 61089 0 3 0 0x4000080 fsleep syz-executor 87144 2342 19603 0 2 0 0 syz-executor 87144 365993 19603 0 3 0 0x4000080 fsleep syz-executor 87515 523684 1 0 3 0x2 0x80 nanoslp getty 19603 69255 64187 0 2 0x2 0xc80 syz-executor 51430 120926 70113 0 2 0 0 syz-executor 51430 3761 70113 0 3 0 0x4000080 nanoslp syz-executor 51430 191437 70113 0 3 0 0x4000080 fsleep syz-executor 51430 137841 70113 0 3 0 0x4000080 fsleep syz-executor *39236 422675 64187 0 7 0x2 0 syz-executor 70113 406041 64187 0 2 0x2 0xc80 syz-executor 50507 357917 0 0 3 0x14000 0x280 nfsidl nfsio 48652 58776 0 0 3 0x14000 0x280 nfsidl nfsio 73988 67370 0 0 3 0x14000 0x280 nfsidl nfsio 27597 400228 0 0 3 0x14000 0x280 nfsidl nfsio 52524 498139 0 0 3 0x14000 0x280 nfsidl nfsio 64378 24109 0 0 3 0x14000 0x280 nfsidl nfsio 3323 172741 0 0 3 0x14000 0x280 nfsidl nfsio 92774 266167 0 0 3 0x14000 0x280 nfsidl nfsio 29001 507191 0 0 3 0x14000 0x280 nfsidl nfsio 65561 222738 0 0 3 0x14000 0x280 nfsidl nfsio 21487 515249 0 0 3 0x14000 0x280 nfsidl nfsio 1585 332134 0 0 3 0x14000 0x280 nfsidl nfsio 57235 187707 0 0 3 0x14000 0x280 nfsidl nfsio 31209 360875 0 0 3 0x14000 0x280 nfsidl nfsio 64062 419216 0 0 3 0x14000 0x280 nfsidl nfsio 83150 384634 0 0 3 0x14000 0x280 nfsidl nfsio 47586 242762 0 0 3 0x14000 0x280 nfsidl nfsio 4306 255178 0 0 3 0x14000 0x280 nfsidl nfsio 68822 250937 0 0 3 0x14000 0x280 nfsidl nfsio 41984 248771 0 0 3 0x14000 0x280 nfsidl nfsio 61089 82691 64187 0 2 0x2 0xc80 syz-executor 81807 399426 64187 0 2 0x2 0xc80 syz-executor 88090 186782 64187 0 2 0x2 0xc80 syz-executor 63246 368098 64187 0 2 0x2 0xc80 syz-executor 64187 268791 1 0 2 0x10000002 0 syz-executor 31243 182512 0 0 3 0x14000 0x200 bored smr 40841 506516 0 0 2 0x14000 0x200 zerothread 21634 8647 0 0 3 0x14000 0x200 aiodoned aiodoned 4557 61056 0 0 3 0x14000 0x200 syncer update 29023 498845 0 0 3 0x14000 0x200 cleaner cleaner 53197 15789 0 0 3 0x14000 0x200 reaper reaper 30358 48679 0 0 3 0x14000 0x200 pgdaemon pagedaemon 82570 357690 0 0 3 0x14000 0x200 bored viomb 59992 159953 0 0 3 0x14000 0x40000200 acpi0 acpi0 29293 176188 0 0 3 0x14000 0x200 bored softnet0 95315 365939 0 0 3 0x14000 0x200 bored systqmp 50346 15861 0 0 3 0x14000 0x200 bored systq 88896 407326 0 0 3 0x14000 0x40000200 tmoslp softclock 96975 458174 0 0 3 0x14000 0x40000200 idle0 1 78178 0 0 3 0x2 0x80 wait init 0 0 -1 0 3 0x10000 0x200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11027 12109K 12840K 166960K 12982 0 pcb 19 12K 12K 166960K 126 0 rtable 196 8K 9K 166960K 1041 0 pf 26 12K 73K 166960K 119 0 ifaddr 30 5K 7K 166960K 88 0 ifgroup 38 1K 2K 166960K 121 0 sysctl 3 1K 9K 166960K 14 0 counters 30 17K 18K 166960K 134 0 ioctlops 0 0K 4K 166960K 298 0 iov 0 0K 13K 166960K 29 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1381 87K 87K 166960K 2155 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 14 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 133 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1734 201K 291K 166960K 11964 0 file desc 14 53K 232K 166960K 868 0 sigio 0 0K 0K 166960K 6 0 proc 20 25K 91K 166960K 719 0 subproc 63 3K 4K 166960K 108 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 1 0K 0K 166960K 60 0 in_multi 68 4K 6K 166960K 165 0 ether_multi 3 0K 0K 166960K 6 0 mrt 1 0K 0K 166960K 21 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 103 466K 466K 166960K 103 0 exec 0 0K 1K 166960K 460 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 126 88K 172K 166960K 8824 0 UVM aobj 20 2K 4K 166960K 25 0 pinsyscall 17 34K 92K 166960K 2067 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 36 0 NDP 12 0K 2K 166960K 61 0 temp 49 9114K 9178K 166960K 22145 0 kqueue 3 6K 36K 166960K 174 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 94 0 93 1 0 1 1 0 8 0 rtentry 136 272 0 193 4 0 4 4 0 8 0 unpcb 144 450 0 450 2 0 2 2 0 8 2 syncache 336 10 0 9 2 1 1 1 0 8 0 tcpcb 736 162 0 160 2 0 2 2 0 8 1 arp 96 60 0 49 1 0 1 1 0 8 0 ipq 40 4 0 1 1 0 1 1 0 8 0 ipqe 40 7 0 3 1 0 1 1 0 8 0 inpcb 328 606 0 600 7 0 7 7 0 8 6 nd6 112 45 0 29 1 0 1 1 0 8 0 pkpcb 40 5 0 5 1 0 1 1 0 8 1 kcovpl 48 12 0 5 1 0 1 1 0 8 0 mppekey 1024 3 0 3 1 0 1 1 0 8 1 ppxss 1072 94 0 94 2 1 1 1 0 8 1 pfstscr 40 2 0 2 1 0 1 1 0 8 1 pfrktable 1344 69 0 69 2 1 1 1 0 8 1 pfstlim 224 1 0 1 1 0 1 1 0 8 1 pfanchor 1288 2 0 2 1 1 0 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfqueue 320 1 0 0 1 0 1 1 0 8 0 pfstitem 24 4 0 0 1 0 1 1 0 8 0 pfstkey 128 9 0 5 1 0 1 1 0 8 0 pfstate 384 5 0 3 1 0 1 1 0 8 0 pfrule 1360 72 0 72 2 1 1 1 0 8 1 rttmr 136 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 798 0 430 33 1 32 33 0 8 8 art_table 40 800 0 430 6 0 6 6 0 8 0 art_node 32 271 0 199 2 0 2 2 0 8 0 sysvmsgpl 40 14 0 9 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 72 129 0 119 1 0 1 1 0 8 0 shmpl 112 22 0 5 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 2902 0 1443 93 0 93 93 0 8 0 ffsino 256 2902 0 1443 93 0 93 93 0 8 0 nchpl 144 4026 0 2316 64 0 64 64 0 8 0 rtmask 32 6 0 6 2 1 1 1 0 8 1 vnodes 216 3472 0 0 193 0 193 193 0 8 0 namei 1024 13652 0 13652 3 1 2 2 0 8 2 pfiaddrpl 120 1 0 1 1 1 0 1 0 8 0 kstatmem 264 73 0 56 2 0 2 2 0 8 0 scsiplug 72 3 0 3 1 0 1 1 0 8 1 scxspl 216 19356 0 19356 10 2 8 8 1 8 8 plimitpl 152 201 0 191 1 0 1 1 0 8 0 sigapl 424 1164 0 1113 9 1 8 8 0 8 0 knotepl 120 27805 0 27783 37 27 10 23 0 8 8 kqueuepl 184 303 0 299 4 0 4 4 0 8 3 pipepl 304 238 0 211 3 0 3 3 0 8 0 fdescpl 448 1131 0 1114 5 1 4 5 0 8 1 filepl 120 6195 0 6040 10 0 10 10 0 8 2 lockfpl 104 218 0 216 1 0 1 1 0 8 0 lockfspl 48 96 0 94 1 0 1 1 0 8 0 sessionpl 144 52 0 50 1 0 1 1 0 8 0 pgrppl 48 68 0 58 1 0 1 1 0 8 0 ucredpl 104 1083 0 1079 1 0 1 1 0 8 0 zombiepl 144 1116 0 1113 2 1 1 1 0 8 0 processpl 1152 1164 0 1113 5 0 5 5 0 8 0 procpl 664 2134 0 2077 7 0 7 7 0 8 0 sosppl 176 2 0 2 1 0 1 1 0 8 1 sockpl 552 1184 0 1177 8 0 8 8 0 8 6 mcl64k 65536 162 0 162 2 1 1 1 0 8 1 mcl9k128 9344 8 0 8 1 0 1 1 0 8 1 mcl8k 8192 142 0 142 2 1 1 1 0 8 1 mcl4k 4096 3452 0 3400 18 9 9 16 0 8 2 mcl2k2 2112 2 0 2 1 0 1 1 0 8 1 mcl2k 2048 973 0 968 3 0 3 3 0 8 2 mextrefs 64 362 0 362 2 1 1 1 0 8 1 mtagpl 96 6 0 6 2 1 1 1 0 8 1 mbufpl 256 12496 0 12382 19 0 19 19 0 8 8 bufpl 272 7078 0 862 415 0 415 415 0 8 0 anonpl 24 164442 0 162461 64 10 54 54 0 187 22 amapchunkpl 152 29073 0 28514 36 2 34 34 0 158 7 amappl16 200 2973 0 2951 30 16 14 23 0 8 8 amappl15 192 9 0 9 2 1 1 1 0 8 1 amappl14 184 458 0 458 1 0 1 1 0 8 1 amappl13 176 205 0 204 1 0 1 1 0 8 0 amappl12 168 1473 0 1457 2 0 2 2 0 8 0 amappl11 160 4 0 4 1 1 0 1 0 8 0 amappl10 152 58 0 58 1 0 1 1 0 8 1 amappl9 144 269 0 269 1 1 0 1 0 8 0 amappl8 136 110 0 109 1 0 1 1 0 8 0 amappl7 128 152 0 149 1 0 1 1 0 8 0 amappl6 120 189 0 188 1 0 1 1 0 8 0 amappl5 112 91 0 90 1 0 1 1 0 8 0 amappl4 104 310 0 306 1 0 1 1 0 8 0 amappl3 96 5133 0 5074 3 0 3 3 0 8 0 amappl2 88 1241 0 1217 2 0 2 2 0 8 0 amappl1 80 13297 0 13190 14 2 12 14 0 8 3 amappl 88 7943 0 7831 5 0 5 5 0 92 1 uvmvnodes 80 123 0 0 3 0 3 3 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 3 0 2 1 0 1 1 0 8 0 dma256 256 7 0 7 2 1 1 1 0 8 1 dma128 128 254 0 254 2 1 1 1 0 8 1 dma64 64 8 0 8 2 1 1 1 0 8 1 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 20 0 19 1 0 1 1 0 8 0 aobjpl 72 24 0 5 1 0 1 1 0 8 0 uaddrrnd 24 1131 0 1114 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1131 0 1114 1 0 1 1 0 8 0 vmmpekpl 168 10088 0 10039 3 0 3 3 0 8 0 vmmpepl 168 77919 0 77152 92 0 92 92 0 357 42 vmsppl 368 1130 0 1114 4 1 3 4 0 8 0 rwobjpl 40 22471 0 22030 13 0 13 13 0 8 0 pdppl 4096 2268 0 2228 102 52 50 80 0 8 10 pvpl 32 484304 0 479035 142 19 123 123 0 265 54 pmappl 216 1130 0 1114 3 1 2 3 0 8 0 extentpl 40 46 0 28 1 0 1 1 0 8 0 phpool 112 808 0 71 22 0 22 22 0 8 0 ddb> machine ddbcpu 0 No such command ddb>