uvm_fault(0xffffffff835c7458, 0xffff800020002190, 0, 1) -> d kernel: page fault trap, code=0 Stopped at ffs2_balloc+0x9ee: movq 0(%rcx,%rax,8),%r14 TID PID UID PRFLAGS PFLAGS CPU COMMAND * 32502 32819 73 0x1100010 0x1 0 syslogd ffs2_balloc(fffffd806e0534c0,fa6e3,48,fffffd807f7d78f0,1,ffff80002a4dd4a8) at ffs2_balloc+0x9ee sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff80002a4dd530) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd806c98ecd0,ffff80002a4dd5e0,3,fffffd807f7d78f0) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff80002a4b1be8,fffffd806c98ecd0,fffffd807f7d78f0,ffff80002a4dd6a8,ffff80002a4dd680) at ktrwriteraw+0x191 sys/kern/kern_ktrace.c:682 ktrgenio(ffff80002a4b1be8,e,1,ffff800000b66e80,68) at ktrgenio+0x2b6 ktrwrite2 sys/kern/kern_ktrace.c:644 [inline] ktrgenio(ffff80002a4b1be8,e,1,ffff800000b66e80,68) at ktrgenio+0x2b6 sys/kern/kern_ktrace.c:258 dofilewritev(ffff80002a4b1be8,e,ffff80002a4dd8a0,0,ffff80002a4dd960) at dofilewritev+0x4d3 sys/kern/sys_generic.c:398 sys_writev(ffff80002a4b1be8,ffff80002a4dda10,ffff80002a4dd960) at sys_writev+0xd8 sys/kern/sys_generic.c:327 syscall(ffff80002a4dda10) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x734adbd15e80, 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(0xffffffff835c7458, 0xffff800020002190, 0, 1) -> d ddb> trace ffs2_balloc(fffffd806e0534c0,fa6e3,48,fffffd807f7d78f0,1,ffff80002a4dd4a8) at ffs2_balloc+0x9ee sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff80002a4dd530) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd806c98ecd0,ffff80002a4dd5e0,3,fffffd807f7d78f0) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff80002a4b1be8,fffffd806c98ecd0,fffffd807f7d78f0,ffff80002a4dd6a8,ffff80002a4dd680) at ktrwriteraw+0x191 sys/kern/kern_ktrace.c:682 ktrgenio(ffff80002a4b1be8,e,1,ffff800000b66e80,68) at ktrgenio+0x2b6 ktrwrite2 sys/kern/kern_ktrace.c:644 [inline] ktrgenio(ffff80002a4b1be8,e,1,ffff800000b66e80,68) at ktrgenio+0x2b6 sys/kern/kern_ktrace.c:258 dofilewritev(ffff80002a4b1be8,e,ffff80002a4dd8a0,0,ffff80002a4dd960) at dofilewritev+0x4d3 sys/kern/sys_generic.c:398 sys_writev(ffff80002a4b1be8,ffff80002a4dda10,ffff80002a4dd960) at sys_writev+0xd8 sys/kern/sys_generic.c:327 syscall(ffff80002a4dda10) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x734adbd15e80, count: -9 ddb> show registers rdi 0 rsi 0 rbp 0xffff80002a4dd450 rbx 0xfffffd806e0534c0 rdx 0 rcx 0xffff800020002000 rax 0x32 r8 0xffffffffffffffff r9 0xffff80002a4dd4a8 r10 0xd5d4689b12881254 r11 0x2e80afad441c20d4 r12 0x10 r13 0x1 r14 0xffffffff r15 0xfffffd8062ab8128 rip 0xffffffff81de831e ffs2_balloc+0x9ee cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff80002a4dd2e0 ss 0x10 ffs2_balloc+0x9ee: movq 0(%rcx,%rax,8),%r14 ddb> show proc PROC (syslogd) tid=32502 pid=32819 tcnt=1 stat=onproc flags process=1100010 proc=1 runpri=17, usrpri=51, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a4b1960,0xffff80002a4b0a40 process=0xffff8000ffff9578 user=0xffff80002a4d8000, vmspace=0xfffffd807e2d6588 estcpu=1, cpticks=1, pctcpu=0.0, user=0, sys=3, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 4219 52458 0 0 3 0x14200 acct acct 2021 486024 55361 0 3 0x82 piperd syz-executor 47103 126739 55361 0 3 0x82 piperd syz-executor 87565 43035 0 0 3 0x14200 bored sosplice 77492 222286 55361 0 3 0x82 piperd syz-executor 41328 411311 55361 0 3 0x82 piperd syz-executor 15993 129750 55361 0 3 0x82 piperd syz-executor 22089 311889 55361 0 3 0x82 piperd syz-executor 55361 468287 1451 0 3 0x82 wait syz-executor 1451 390775 63217 0 3 0x10008a sigsusp ksh 63217 276562 80186 0 3 0x98 kqread sshd-session 80186 318140 68716 0 3 0x92 kqread sshd-session 29798 44675 1 0 3 0x100083 ttyin getty 68716 409299 1 0 3 0x88 kqread sshd *32819 32502 5175 73 7 0x1100011 syslogd 5175 376814 1 0 3 0x100082 sbwait syslogd 39084 107438 1 0 3 0x100080 kqread resolvd 27340 469382 95886 77 3 0x100092 kqread dhcpleased 72709 97001 95886 77 3 0x100092 kqread dhcpleased 95886 303369 1 0 3 0x80 kqread dhcpleased 86755 268098 0 0 3 0x14200 bored smr 46902 65314 0 0 3 0x14200 pgzero zerothread 35871 266032 0 0 3 0x14200 aiodoned aiodoned 50171 208337 0 0 3 0x14200 syncer update 2647 353726 0 0 3 0x14200 cleaner cleaner 92992 27961 0 0 3 0x14200 reaper reaper 79904 198518 0 0 3 0x14200 pgdaemon pagedaemon 73092 91424 0 0 3 0x14200 bored viomb 14644 147386 0 0 3 0x40014200 acpi0 acpi0 92624 295518 0 0 3 0x14200 bored softnet3 81605 145975 0 0 3 0x14200 bored softnet2 68279 275066 0 0 3 0x14200 bored softnet1 51969 18456 0 0 3 0x14200 bored softnet0 41071 341166 0 0 3 0x14200 bored systqmp 16085 86014 0 0 3 0x14200 bored systq 44187 137697 0 0 2 0x40014200 softclock 18838 401305 0 0 3 0x40014200 idle0 1 290864 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 10179 11049K 11646K 166960K 12941 0 pcb 17 15K 16K 166960K 298 0 rtable 201 7K 8K 166960K 675 0 pf 36 14K 270K 166960K 135 0 ifaddr 40 7K 8K 166960K 71 0 ifgroup 51 2K 2K 166960K 85 0 sysctl 2 0K 0K 166960K 2 0 counters 30 17K 17K 166960K 41 0 ioctlops 0 0K 4K 166960K 226 0 iov 0 0K 18K 166960K 131 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1456 91K 92K 166960K 2384 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 17 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 32 0 dirhash 12 2K 2K 166960K 30 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 9 29K 93K 166960K 1164 0 sigio 0 0K 0K 166960K 65 0 proc 60 59K 83K 166960K 646 0 subproc 91 5K 6K 166960K 156 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 226 0 in_multi 88 6K 7K 166960K 199 0 ether_multi 1 0K 0K 166960K 23 0 mrt 2 0K 0K 166960K 12 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 85 387K 387K 166960K 85 0 exec 0 0K 1K 166960K 493 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 150 62K 90K 166960K 11751 0 UVM aobj 27 2K 2K 166960K 30 0 pinsyscall 30 60K 96K 166960K 2280 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 56 0 NDP 11 0K 2K 166960K 45 0 temp 69 6817K 6887K 166960K 31790 0 kqueue 13 20K 30K 166960K 203 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 120 117 0 114 1 0 1 1 0 8 0 rtentry 112 232 0 143 4 0 4 4 0 8 0 unpcb 144 1240 0 1225 6 0 6 6 0 8 5 syncache 336 7 0 7 1 0 1 1 0 8 1 tcpqe 32 1 0 1 1 0 1 1 0 8 1 tcpcb 808 328 0 323 4 0 4 4 0 8 3 arp 88 29 0 13 1 0 1 1 0 8 0 ipq 40 4 0 2 1 0 1 1 0 8 0 ipqe 40 94 0 91 1 0 1 1 0 8 0 inpcb 336 1480 0 1472 13 4 9 13 0 8 7 nd6 104 38 0 16 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 ppxss 1072 5 0 5 1 0 1 1 0 8 1 pfstscr 40 4 0 4 1 0 1 1 0 8 1 pfrktable 1344 1 0 0 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 4 0 2 1 0 1 1 0 8 0 pfstkey 128 19 0 15 1 0 1 1 0 8 0 pfstate 344 10 0 9 1 0 1 1 0 8 0 pfrule 1344 5 0 4 1 0 1 1 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 670 0 255 30 0 30 30 0 8 0 art_table 32 673 0 255 4 0 4 4 0 8 0 art_node 16 165 0 87 1 0 1 1 0 8 0 sysvmsgpl 40 14 0 6 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 27 0 17 1 0 1 1 0 8 0 shmpl 112 27 0 3 1 0 1 1 0 8 0 dirhash 1024 29 0 12 3 0 3 3 0 8 0 dino2pl 256 3346 0 1852 95 0 95 95 0 8 0 ffsino 240 3346 0 1852 89 0 89 89 0 8 0 nchpl 144 4986 0 3308 63 0 63 63 0 8 0 uvmvnodes 80 4141 0 0 85 0 85 85 0 8 0 vnodes 216 4141 0 0 231 0 231 231 0 8 0 namei 1024 18472 0 18472 2 0 2 2 0 8 2 kstatmem 264 44 0 22 2 0 2 2 0 8 0 scsiplug 72 6 0 6 1 0 1 1 0 8 1 scxspl 216 14636 0 14636 8 0 8 8 1 8 8 plimitpl 152 226 0 210 1 0 1 1 0 8 0 sigapl 424 1444 0 1404 6 0 6 6 0 8 0 futexpl 64 15778 0 15778 1 0 1 1 0 8 1 knotepl 120 54638 0 54591 21 11 10 16 0 8 8 kqueuepl 184 399 0 390 4 0 4 4 0 8 3 pipepl 288 201 0 174 4 0 4 4 0 8 1 fdescpl 432 1423 0 1402 5 0 5 5 0 8 1 filepl 120 9736 0 9520 15 0 15 15 0 8 7 lockfpl 104 358 0 356 1 0 1 1 0 8 0 lockfspl 48 119 0 117 1 0 1 1 0 8 0 sessionpl 144 28 0 20 1 0 1 1 0 8 0 pgrppl 48 46 0 30 1 0 1 1 0 8 0 ucredpl 104 1518 0 1506 1 0 1 1 0 8 0 zombiepl 144 1406 0 1404 1 0 1 1 0 8 0 processpl 1096 1444 0 1404 4 0 4 4 0 8 0 procpl 648 2819 0 2779 6 0 6 6 0 8 1 sosppl 168 4 0 4 1 0 1 1 0 8 1 sockpl 504 2857 0 2831 50 38 12 25 0 8 8 mcl64k 65536 21 0 21 1 0 1 1 0 8 1 mcl16k 16384 10 0 10 1 0 1 1 0 8 1 mcl12k 12288 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 24 0 24 1 0 1 1 0 8 1 mcl4k 4096 4026 0 3975 19 4 15 19 0 8 7 mcl2k2 2112 25 0 25 1 0 1 1 0 8 1 mcl2k 2048 1275 0 1272 4 0 4 4 0 8 3 mtagpl 96 35 0 13 1 0 1 1 0 8 0 mbufpl 256 16019 0 15859 22 0 22 22 0 8 8 bufpl 280 6614 0 367 447 0 447 447 0 8 0 anonpl 24 234058 0 231389 97 0 97 97 0 187 66 amapchunkpl 152 40993 0 40734 50 0 50 50 0 158 31 amappl16 200 4379 0 4358 22 10 12 15 0 8 8 amappl15 192 10 0 10 1 0 1 1 0 8 1 amappl14 184 114 0 104 1 0 1 1 0 8 0 amappl13 176 6 0 6 1 0 1 1 0 8 1 amappl12 168 2086 0 2065 3 0 3 3 0 8 1 amappl11 160 49 0 38 1 0 1 1 0 8 0 amappl10 152 9 0 8 1 0 1 1 0 8 0 amappl9 144 102 0 102 1 0 1 1 0 8 1 amappl8 136 22 0 21 1 0 1 1 0 8 0 amappl7 128 105 0 94 1 0 1 1 0 8 0 amappl6 120 190 0 187 1 0 1 1 0 8 0 amappl5 112 143 0 134 1 0 1 1 0 8 0 amappl4 104 304 0 289 1 0 1 1 0 8 0 amappl3 96 7297 0 7246 3 0 3 3 0 8 0 amappl2 88 1732 0 1660 2 0 2 2 0 8 0 amappl1 80 11167 0 10681 13 0 13 13 0 8 1 amappl 88 11278 0 11181 5 0 5 5 0 92 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 128 256 0 256 1 0 1 1 0 8 1 dma64 64 7 0 7 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 29 0 3 1 0 1 1 0 8 0 uaddrrnd 24 1423 0 1402 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1423 0 1402 1 0 1 1 0 8 0 vmmpekpl 168 11356 0 11313 3 0 3 3 0 8 0 vmmpepl 168 91205 0 89893 89 0 89 89 0 357 11 vmsppl 352 1422 0 1402 4 0 4 4 0 8 1 rwobjpl 24 29364 0 24441 31 0 31 31 0 8 0 pdppl 4096 2852 0 2804 112 46 66 80 0 8 18 pvpl 32 627393 0 620692 281 0 281 281 0 265 190 pmappl 216 1422 0 1402 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 457 0 92 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ffs2_balloc(fffffd806e0534c0,fa6e3,48,fffffd807f7d78f0,1,ffff80002a4dd4a8) at ffs2_balloc+0x9ee sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff80002a4dd530) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd806c98ecd0,ffff80002a4dd5e0,3,fffffd807f7d78f0) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff80002a4b1be8,fffffd806c98ecd0,fffffd807f7d78f0,ffff80002a4dd6a8,ffff80002a4dd680) at ktrwriteraw+0x191 sys/kern/kern_ktrace.c:682 ktrgenio(ffff80002a4b1be8,e,1,ffff800000b66e80,68) at ktrgenio+0x2b6 ktrwrite2 sys/kern/kern_ktrace.c:644 [inline] ktrgenio(ffff80002a4b1be8,e,1,ffff800000b66e80,68) at ktrgenio+0x2b6 sys/kern/kern_ktrace.c:258 dofilewritev(ffff80002a4b1be8,e,ffff80002a4dd8a0,0,ffff80002a4dd960) at dofilewritev+0x4d3 sys/kern/sys_generic.c:398 sys_writev(ffff80002a4b1be8,ffff80002a4dda10,ffff80002a4dd960) at sys_writev+0xd8 sys/kern/sys_generic.c:327 syscall(ffff80002a4dda10) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x734adbd15e80, count: -9 ddb> machine ddbcpu 1 No such command ddb> trace ffs2_balloc(fffffd806e0534c0,fa6e3,48,fffffd807f7d78f0,1,ffff80002a4dd4a8) at ffs2_balloc+0x9ee sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff80002a4dd530) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd806c98ecd0,ffff80002a4dd5e0,3,fffffd807f7d78f0) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff80002a4b1be8,fffffd806c98ecd0,fffffd807f7d78f0,ffff80002a4dd6a8,ffff80002a4dd680) at ktrwriteraw+0x191 sys/kern/kern_ktrace.c:682 ktrgenio(ffff80002a4b1be8,e,1,ffff800000b66e80,68) at ktrgenio+0x2b6 ktrwrite2 sys/kern/kern_ktrace.c:644 [inline] ktrgenio(ffff80002a4b1be8,e,1,ffff800000b66e80,68) at ktrgenio+0x2b6 sys/kern/kern_ktrace.c:258 dofilewritev(ffff80002a4b1be8,e,ffff80002a4dd8a0,0,ffff80002a4dd960) at dofilewritev+0x4d3 sys/kern/sys_generic.c:398 sys_writev(ffff80002a4b1be8,ffff80002a4dda10,ffff80002a4dd960) at sys_writev+0xd8 sys/kern/sys_generic.c:327 syscall(ffff80002a4dda10) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x734adbd15e80, count: -9