uvm_fault(0xffffffff83a282c8, 0xffff800029802110, 0, 1) -> d kernel: page fault trap, code=0 Stopped at ffs2_balloc+0xa0a: movq 0(%rcx,%rax,8),%r14 TID PID UID PRFLAGS PFLAGS CPU COMMAND *513608 60041 0 0x2 0x1 0 syz-executor ffs2_balloc(fffffd806960ce00,b91f0,48,fffffd8007ffd618,1,ffff80002a84b888) at ffs2_balloc+0xa0a sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff80002a84b910) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd80619dc7c0,ffff80002a84b9c0,3,fffffd8007ffd618) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff80002a7362a0,fffffd80619dc7c0,fffffd8007ffd618,ffff80002a84ba90,ffff80002a84ba70) at ktrwriteraw+0x19b sys/kern/kern_ktrace.c:692 ktrsysret(ffff80002a7362a0,88,16,ffff80002a84bb50) at ktrsysret+0x17f ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline] ktrsysret(ffff80002a7362a0,88,16,ffff80002a84bb50) at ktrsysret+0x17f sys/kern/kern_ktrace.c:209 syscall(ffff80002a84bc00) at syscall+0xad9 mi_syscall_return sys/sys/syscall_mi.h:204 [inline] syscall(ffff80002a84bc00) at syscall+0xad9 sys/arch/amd64/amd64/trap.c:804 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x760de31db790, count: 8 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(0xffffffff83a282c8, 0xffff800029802110, 0, 1) -> d ddb> trace ffs2_balloc(fffffd806960ce00,b91f0,48,fffffd8007ffd618,1,ffff80002a84b888) at ffs2_balloc+0xa0a sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff80002a84b910) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd80619dc7c0,ffff80002a84b9c0,3,fffffd8007ffd618) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff80002a7362a0,fffffd80619dc7c0,fffffd8007ffd618,ffff80002a84ba90,ffff80002a84ba70) at ktrwriteraw+0x19b sys/kern/kern_ktrace.c:692 ktrsysret(ffff80002a7362a0,88,16,ffff80002a84bb50) at ktrsysret+0x17f ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline] ktrsysret(ffff80002a7362a0,88,16,ffff80002a84bb50) at ktrsysret+0x17f sys/kern/kern_ktrace.c:209 syscall(ffff80002a84bc00) at syscall+0xad9 mi_syscall_return sys/sys/syscall_mi.h:204 [inline] syscall(ffff80002a84bc00) at syscall+0xad9 sys/arch/amd64/amd64/trap.c:804 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x760de31db790, count: -7 ddb> show registers rdi 0 rsi 0 rbp 0xffff80002a84b830 rbx 0xfffffd806960ce00 rdx 0 rcx 0xffff800029802000 rax 0x22 r8 0xffffffffffffffff r9 0xffff80002a84b888 r10 0xad27fcf802f4103d r11 0xa38b798adfbee99b r12 0x1 r13 0xffff800000c47800 r14 0xffff80002a84b6d0 r15 0xfffffd806c8307d0 rip 0xffffffff8326488a ffs2_balloc+0xa0a cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002a84b6c0 ss 0x10 ffs2_balloc+0xa0a: movq 0(%rcx,%rax,8),%r14 ddb> show proc PROC (syz-executor) tid=513608 pid=60041 tcnt=1 stat=onproc flags process=2 proc=1 runpri=17, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a736f98,0xffff80002a736a78 process=0xffff80002a79c490 user=0xffff80002a846000, vmspace=0xfffffd806f51e008 estcpu=36, cpticks=21, pctcpu=0.2, user=3, sys=18, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 97502 233794 50480 0 2 0 syz-executor 97502 198757 50480 0 3 0x4000080 fsleep syz-executor 2135 344972 36223 0 2 0 syz-executor 2135 166454 36223 0 2 0x4000000 syz-executor 95111 166695 86221 0 2 0xc80 syz-executor 95111 83312 86221 0 3 0x4000080 ttyout syz-executor 95111 500623 86221 0 3 0x4000080 ttyout syz-executor 45871 457073 89392 0 2 0 syz-executor 45871 27079 89392 0 3 0x4000080 fsleep syz-executor 12961 91871 48533 0 2 0xc80 syz-executor 12961 394957 48533 0 3 0x4000080 msgwait syz-executor 12961 473438 48533 0 3 0x4000080 fsleep syz-executor 40892 392995 0 0 3 0x14200 acct acct 96980 303646 1 0 3 0x100083 ttyin getty 29580 363240 44237 0 2 0x2 syz-executor 36223 515092 44237 0 2 0xc82 syz-executor 50480 411970 44237 0 2 0xc82 syz-executor *60041 513608 44237 0 7 0x3 syz-executor 14516 267512 44237 0 2 0x2 syz-executor 89392 495093 44237 0 2 0xc82 syz-executor 48533 253926 44237 0 2 0xc82 syz-executor 86221 329892 44237 0 2 0xc82 syz-executor 44237 169994 96518 0 3 0x82 kqread syz-executor 96518 111372 56256 0 3 0x10008a sigsusp ksh 56256 300464 26418 0 3 0x98 kqread sshd-session 26418 213038 80154 0 3 0x92 kqread sshd-session 80154 39857 1 0 3 0x88 kqread sshd 5005 332991 26781 73 3 0x1100090 kqread syslogd 26781 479592 1 0 3 0x100082 sbwait syslogd 29654 426900 1 0 3 0x100080 kqread resolvd 45800 301717 3118 77 3 0x100092 kqread dhcpleased 93337 322505 3118 77 3 0x100092 kqread dhcpleased 3118 426751 1 0 3 0x80 kqread dhcpleased 12079 152357 0 0 3 0x14200 bored smr 91354 317296 0 0 2 0x14200 zerothread 36276 485003 0 0 3 0x14200 aiodoned aiodoned 58024 267842 0 0 3 0x14200 syncer update 219 461602 0 0 3 0x14200 cleaner cleaner 25229 454726 0 0 3 0x14200 reaper reaper 28422 76860 0 0 3 0x14200 pgdaemon pagedaemon 48413 301968 0 0 3 0x14200 bored viomb 36913 60574 0 0 3 0x40014200 acpi0 acpi0 6239 424312 0 0 2 0x14200 softnet0 36335 9306 0 0 3 0x14200 bored systqmp 39052 263235 0 0 3 0x14200 bored systq 92971 86249 0 0 3 0x40014200 tmoslp softclock 92716 196399 0 0 3 0x40014200 idle0 1 133516 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 11057 12235K 12622K 166960K 13292 0 pcb 17 12K 12K 166960K 225 0 rtable 109 15K 16K 166960K 547 0 pf 37 14K 20K 166960K 231 0 ifaddr 23 3K 7K 166960K 90 0 ifgroup 46 2K 2K 166960K 153 0 sysctl 3 1K 9K 166960K 7 0 counters 33 17K 18K 166960K 71 0 ioctlops 0 0K 4K 166960K 194 0 iov 0 0K 16K 166960K 45 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1292 81K 82K 166960K 2216 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 20K 24K 166960K 14 0 VM map 2 1K 1K 166960K 2 0 sem 13 2K 2K 166960K 21 0 dirhash 12 2K 2K 166960K 51 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 15 53K 97K 166960K 1914 0 sigio 0 0K 0K 166960K 18 0 proc 61 59K 108K 166960K 567 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 87 0 in_multi 34 2K 7K 166960K 185 0 ether_multi 1 0K 0K 166960K 28 0 mrt 2 0K 0K 166960K 56 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 456 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 201 150K 164K 166960K 16711 0 UVM aobj 8 2K 2K 166960K 8 0 pinsyscall 36 72K 96K 166960K 3018 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 73 0 NDP 11 0K 2K 166960K 61 0 temp 56 9111K 9174K 166960K 49728 0 kqueue 13 20K 28K 166960K 268 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 61 0 58 1 0 1 1 0 8 0 rtentry 136 163 0 134 4 0 4 4 0 8 0 unpcb 144 391 0 376 1 0 1 1 0 8 0 syncache 336 14 0 14 1 0 1 1 0 8 1 tcpcb 736 226 0 222 1 0 1 1 0 8 0 arp 96 24 0 19 1 0 1 1 0 8 0 ipq 40 5 0 2 1 0 1 1 0 8 0 ipqe 40 8 0 5 1 0 1 1 0 8 0 inpcb 328 690 0 681 2 0 2 2 0 8 1 ip6q 72 4 0 1 1 0 1 1 0 8 0 ip6af 40 5 0 2 1 0 1 1 0 8 0 nd6 112 31 0 26 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 22 0 20 1 0 1 1 0 8 0 pppxif 1416 4 0 4 1 0 1 1 0 8 1 pfstscr 40 31 0 18 1 0 1 1 0 8 0 pfrktable 1344 11 0 5 1 0 1 1 0 8 0 pfsrclim 320 4 0 3 1 0 1 1 0 8 0 pfanchor 1288 8 0 0 1 0 1 1 0 8 0 pftag 88 8 0 2 1 0 1 1 0 8 0 pfstitem 24 14 0 4 1 0 1 1 0 8 0 pfstkey 128 32 0 21 1 0 1 1 0 8 0 pfstate 384 17 0 9 1 0 1 1 0 8 0 pfrule 1360 31 0 28 1 0 1 1 0 8 0 rttmr 136 8 0 8 1 0 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 866 0 671 30 4 26 30 0 8 8 art_table 40 868 0 671 5 0 5 5 0 8 0 art_node 32 163 0 137 1 0 1 1 0 8 0 sysvmsgpl 40 16 0 3 1 0 1 1 0 8 0 semupl 112 3 0 3 1 0 1 1 0 8 1 semapl 72 15 0 4 1 0 1 1 0 8 0 shmpl 112 5 0 0 1 0 1 1 0 8 0 dirhash 1024 43 0 26 3 0 3 3 0 8 0 dino2pl 256 4424 0 2972 92 0 92 92 0 8 0 ffsino 256 4424 0 2972 92 0 92 92 0 8 0 nchpl 144 6592 0 4898 64 0 64 64 0 8 1 rtmask 32 1 0 1 1 0 1 1 0 8 1 vnodes 216 4890 0 0 272 0 272 272 0 8 0 namei 1024 17611 0 17611 2 0 2 2 0 8 2 pfiaddrpl 120 2 0 0 1 0 1 1 0 8 0 acpiwqpl 32 2 0 2 1 0 1 1 1 8 1 kstatmem 264 81 0 58 2 0 2 2 0 8 0 scsiplug 72 13 0 13 1 0 1 1 0 8 1 scxspl 216 22720 0 22720 8 0 8 8 1 8 8 plimitpl 152 195 0 178 1 0 1 1 0 8 0 sigapl 424 2212 0 2171 6 0 6 6 0 8 1 knotepl 120 75049 0 75002 36 26 10 23 0 8 8 kqueuepl 184 264 0 255 1 0 1 1 0 8 0 pipepl 304 156 0 129 3 0 3 3 0 8 0 fdescpl 448 2197 0 2170 5 0 5 5 0 8 1 filepl 120 6706 0 6492 7 0 7 7 0 8 0 lockfpl 104 418 0 416 1 0 1 1 0 8 0 lockfspl 48 174 0 172 1 0 1 1 0 8 0 sessionpl 144 73 0 65 1 0 1 1 0 8 0 pgrppl 48 87 0 71 1 0 1 1 0 8 0 ucredpl 104 1608 0 1597 1 0 1 1 0 8 0 zombiepl 144 2171 0 2171 1 0 1 1 0 8 1 processpl 1152 2212 0 2171 4 0 4 4 0 8 0 procpl 664 4263 0 4215 5 0 5 5 0 8 0 sosppl 176 2 0 2 1 0 1 1 0 8 1 sockpl 552 1157 0 1130 3 0 3 3 0 8 0 mcl64k 65536 485 0 484 1 0 1 1 0 8 0 mcl16k 16384 333 0 332 1 0 1 1 0 8 0 mcl12k 12288 212 0 212 1 0 1 1 0 8 1 mcl9k128 9344 97 0 97 1 0 1 1 0 8 1 mcl8k 8192 260 0 260 1 0 1 1 0 8 1 mcl4k 4096 5763 0 5708 14 0 14 14 0 8 6 mcl2k2 2112 2 0 2 1 0 1 1 0 8 1 mcl2k 2048 649 0 646 2 0 2 2 0 8 1 mtagpl 96 18 0 14 1 0 1 1 0 8 0 mbufpl 256 24104 0 23994 20 0 20 20 0 8 6 bufpl 280 7373 0 1157 445 0 445 445 0 8 0 anonpl 24 248985 0 245947 48 0 48 48 0 186 17 amapchunkpl 152 57709 0 57302 26 0 26 26 0 158 7 amappl16 200 3857 0 3822 25 13 12 17 0 8 8 amappl15 192 8 0 7 1 0 1 1 0 8 0 amappl14 184 407 0 406 1 0 1 1 0 8 0 amappl13 176 116 0 106 1 0 1 1 0 8 0 amappl12 168 2469 0 2443 2 0 2 2 0 8 0 amappl11 160 6 0 6 1 0 1 1 0 8 1 amappl10 152 58 0 48 1 0 1 1 0 8 0 amappl9 144 273 0 273 1 0 1 1 0 8 1 amappl8 136 97 0 96 1 0 1 1 0 8 0 amappl7 128 147 0 136 1 0 1 1 0 8 0 amappl6 120 148 0 147 1 0 1 1 0 8 0 amappl5 112 103 0 96 1 0 1 1 0 8 0 amappl4 104 266 0 251 1 0 1 1 0 8 0 amappl3 96 12763 0 12668 4 0 4 4 0 8 1 amappl2 88 543 0 488 2 0 2 2 0 8 0 amappl1 80 17442 0 16903 13 0 13 13 0 8 1 amappl 88 15934 0 15795 4 0 4 4 0 92 0 uvmvnodes 80 149 0 0 4 0 4 4 0 8 0 dma65536 65536 1 0 1 1 0 1 1 0 8 1 dma32768 32768 1 0 1 1 0 1 1 0 8 1 dma8192 8192 2 0 2 1 0 1 1 0 8 1 dma4096 4096 2 0 2 1 0 1 1 0 8 1 dma2048 2048 6 0 6 1 0 1 1 0 8 1 dma1024 1024 3 0 2 1 0 1 1 0 8 0 dma256 256 6 0 6 1 0 1 1 0 8 1 dma128 128 258 0 258 1 0 1 1 0 8 1 dma64 64 6 0 6 1 0 1 1 0 8 1 dma32 32 7 0 7 1 0 1 1 0 8 1 dma16 16 23 0 22 1 0 1 1 0 8 0 aobjpl 72 7 0 0 1 0 1 1 0 8 0 uaddrrnd 24 2197 0 2170 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2197 0 2170 1 0 1 1 0 8 0 vmmpekpl 168 16065 0 16024 3 0 3 3 0 8 0 vmmpepl 168 136550 0 134863 93 0 93 93 0 357 9 vmsppl 368 2196 0 2170 4 0 4 4 0 8 1 rwobjpl 40 32249 0 31266 14 0 14 14 0 8 1 pdppl 4096 4400 0 4340 98 32 66 82 0 8 6 pvpl 32 983399 0 974880 135 0 135 135 0 265 39 pmappl 216 2196 0 2170 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 377 0 36 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ffs2_balloc(fffffd806960ce00,b91f0,48,fffffd8007ffd618,1,ffff80002a84b888) at ffs2_balloc+0xa0a sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff80002a84b910) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd80619dc7c0,ffff80002a84b9c0,3,fffffd8007ffd618) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff80002a7362a0,fffffd80619dc7c0,fffffd8007ffd618,ffff80002a84ba90,ffff80002a84ba70) at ktrwriteraw+0x19b sys/kern/kern_ktrace.c:692 ktrsysret(ffff80002a7362a0,88,16,ffff80002a84bb50) at ktrsysret+0x17f ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline] ktrsysret(ffff80002a7362a0,88,16,ffff80002a84bb50) at ktrsysret+0x17f sys/kern/kern_ktrace.c:209 syscall(ffff80002a84bc00) at syscall+0xad9 mi_syscall_return sys/sys/syscall_mi.h:204 [inline] syscall(ffff80002a84bc00) at syscall+0xad9 sys/arch/amd64/amd64/trap.c:804 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x760de31db790, count: -7 ddb> machine ddbcpu 1 No such command ddb> trace ffs2_balloc(fffffd806960ce00,b91f0,48,fffffd8007ffd618,1,ffff80002a84b888) at ffs2_balloc+0xa0a sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff80002a84b910) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd80619dc7c0,ffff80002a84b9c0,3,fffffd8007ffd618) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff80002a7362a0,fffffd80619dc7c0,fffffd8007ffd618,ffff80002a84ba90,ffff80002a84ba70) at ktrwriteraw+0x19b sys/kern/kern_ktrace.c:692 ktrsysret(ffff80002a7362a0,88,16,ffff80002a84bb50) at ktrsysret+0x17f ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline] ktrsysret(ffff80002a7362a0,88,16,ffff80002a84bb50) at ktrsysret+0x17f sys/kern/kern_ktrace.c:209 syscall(ffff80002a84bc00) at syscall+0xad9 mi_syscall_return sys/sys/syscall_mi.h:204 [inline] syscall(ffff80002a84bc00) at syscall+0xad9 sys/arch/amd64/amd64/trap.c:804 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x760de31db790, count: -7