uvm_fault(0xffffffff839b9bc0, 0xffff800029c62ff8, 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 ffs2_balloc(fffffd8075781d00,40003027f,40,fffffd8007bfdaf8,1,ffff80003810f088) at ffs2_balloc+0xa0a sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff80003810f110) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd806c5e26d0,ffff80003810f1a8,23,fffffd8007bfdaf8) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 vn_rdwr(1,fffffd806c5e26d0,ffff80003810f2e0,40,0,1,b6493b617fd667b9,0,1008,0) at vn_rdwr+0x12d sys/kern/vfs_vnops.c:324 acct_process(ffff80002a776d00) at acct_process+0x7a2 sys/kern/kern_acct.c:245 exit1(ffff80002a776d00,0,0,1) at exit1+0x5c4 sys/kern/kern_exit.c:228 sys_exit(ffff80002a776d00,ffff80003810f510,ffff80003810f460) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003810f510) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003810f510) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ea25ffdbf50, 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(0xffffffff839b9bc0, 0xffff800029c62ff8, 0, 1) -> d ddb> trace ffs2_balloc(fffffd8075781d00,40003027f,40,fffffd8007bfdaf8,1,ffff80003810f088) at ffs2_balloc+0xa0a sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff80003810f110) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd806c5e26d0,ffff80003810f1a8,23,fffffd8007bfdaf8) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 vn_rdwr(1,fffffd806c5e26d0,ffff80003810f2e0,40,0,1,b6493b617fd667b9,0,1008,0) at vn_rdwr+0x12d sys/kern/vfs_vnops.c:324 acct_process(ffff80002a776d00) at acct_process+0x7a2 sys/kern/kern_acct.c:245 exit1(ffff80002a776d00,0,0,1) at exit1+0x5c4 sys/kern/kern_exit.c:228 sys_exit(ffff80002a776d00,ffff80003810f510,ffff80003810f460) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003810f510) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003810f510) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ea25ffdbf50, count: -9 ddb> show registers rdi 0 rsi 0 rbp 0xffff80003810f030 rbx 0xfffffd8075781d00 rdx 0 rcx 0xffff800029c62000 rax 0x1ff r8 0xffffffffffffffff r9 0xffff80003810f088 r10 0xd3819be3afb23ecf r11 0x69a5537244252efa r12 0x1 r13 0xffff800000b3f800 r14 0xffff80003810eed0 r15 0xfffffd8061886118 rip 0xffffffff817c2eda ffs2_balloc+0xa0a cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003810eec0 ss 0 ffs2_balloc+0xa0a: movq 0(%rcx,%rax,8),%r14 ddb> show proc PROC (syz-executor) tid=321453 pid=52968 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=16, usrpri=50, slppri=16, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80002a776d00 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80003c93ad18,0xffffffff8395f738 process=0xffff80002a7dc010 user=0xffff80003810a000, vmspace=0xfffffd806cb08e70 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 69323 304618 28658 0 2 0 syz-executor 69323 363951 28658 0 3 0x4000080 fsleep syz-executor 2162 300797 79872 0 2 0 syz-executor 2162 40229 79872 0 3 0x4000080 kqread syz-executor 73565 381202 49964 0 2 0x10 syz-executor 73565 517112 49964 0 2 0x4000010 syz-executor 73565 309514 49964 0 3 0x4000090 fsleep syz-executor 69370 347693 6874 0 2 0 syz-executor 69370 49537 6874 0 2 0x4000000 syz-executor 26865 466303 0 0 3 0x14200 acct acct 42481 276664 97334 0 2 0xc82 syz-executor 49964 225204 97334 0 2 0x2 syz-executor 84657 487130 1 0 3 0x100083 ttyopn getty 85338 227952 97334 0 3 0x82 piperd syz-executor 79872 91353 97334 0 3 0x82 nanoslp syz-executor 862 167320 97334 0 2 0xc82 syz-executor 80672 68742 97334 0 3 0x82 wait syz-executor 28658 430160 97334 0 2 0xc82 syz-executor 6874 107280 97334 0 3 0x82 nanoslp syz-executor 97334 386736 5596 0 2 0x2 syz-executor 5596 508547 61483 0 3 0x10008a sigsusp ksh 61483 361029 36073 0 3 0x98 kqread sshd-session 36073 39115 93646 0 3 0x92 kqread sshd-session 93646 35396 1 0 3 0x88 kqread sshd 90941 194650 35037 73 3 0x1100090 kqread syslogd 35037 7014 1 0 3 0x100082 sbwait syslogd 97256 68466 1 0 3 0x100080 kqread resolvd 31942 39393 25590 77 3 0x100092 kqread dhcpleased 8038 55732 25590 77 3 0x100092 kqread dhcpleased 25590 96517 1 0 3 0x80 kqread dhcpleased 71239 262990 0 0 3 0x14200 bored smr 46054 282680 0 0 2 0x14200 zerothread 74509 434960 0 0 3 0x14200 aiodoned aiodoned 85071 360549 0 0 3 0x14200 syncer update 84813 105024 0 0 3 0x14200 cleaner cleaner 22425 470217 0 0 3 0x14200 reaper reaper 54587 140457 0 0 3 0x14200 pgdaemon pagedaemon 8600 158135 0 0 3 0x14200 bored viomb 46750 445546 0 0 3 0x40014200 acpi0 acpi0 95204 26158 0 0 3 0x14200 bored softnet0 69944 329948 0 0 3 0x14200 smrbar systqmp 92600 487180 0 0 3 0x14200 bored systq 33436 237442 0 0 3 0x40014200 tmoslp softclock 33620 429094 0 0 3 0x40014200 idle0 1 111416 0 0 3 0x80082 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 10309 11123K 11740K 166960K 14461 0 pcb 17 18K 21K 166960K 579 0 rtable 254 11K 12K 166960K 698 0 pf 32 13K 17K 166960K 223 0 ifaddr 43 8K 8K 166960K 156 0 ifgroup 50 2K 2K 166960K 268 0 sysctl 4 1K 9K 166960K 18 0 counters 33 17K 18K 166960K 153 0 ioctlops 0 0K 4K 166960K 388 0 iov 0 0K 32K 166960K 91 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1493 94K 95K 166960K 3221 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 2K 6K 166960K 17 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 78 0 dirhash 12 2K 2K 166960K 33 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 240K 166960K 1788 0 sigio 0 0K 0K 166960K 31 0 proc 61 59K 100K 166960K 739 0 subproc 72 4K 4K 166960K 110 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 280 0 in_multi 101 7K 7K 166960K 188 0 ether_multi 1 0K 0K 166960K 13 0 mrt 2 0K 0K 166960K 25 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 91 413K 413K 166960K 91 0 exec 0 0K 1K 166960K 778 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 232 144K 162K 166960K 16856 0 UVM aobj 122 9K 11K 166960K 126 0 pinsyscall 38 76K 95K 166960K 2927 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 105 0 NDP 11 0K 2K 166960K 110 0 temp 68 8669K 8745K 166960K 84429 0 kqueue 14 22K 30K 166960K 329 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 120 221 0 218 3 0 3 3 0 8 2 rtentry 136 200 0 101 4 0 4 4 0 8 0 unpcb 144 1291 0 1275 6 0 6 6 0 8 5 syncache 336 6 0 6 1 0 1 1 0 8 1 tcpqe 32 1 0 1 1 0 1 1 0 8 1 tcpcb 736 723 0 718 7 0 7 7 0 8 6 arp 96 29 0 12 1 0 1 1 0 8 0 ipq 40 6 0 2 1 0 1 1 0 8 0 ipqe 40 77 0 73 1 0 1 1 0 8 0 inpcb 328 1899 0 1891 13 4 9 13 0 8 8 ip6q 72 7 0 3 1 0 1 1 0 8 0 ip6af 40 8 0 6 1 0 1 1 0 8 0 nd6 112 41 0 16 1 0 1 1 0 8 0 pkpcb 40 7 0 7 1 0 1 1 0 8 1 kcovpl 48 12 0 4 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 0 1 1 0 8 1 ppxss 1072 95 0 95 1 0 1 1 0 8 1 pppxif 1384 17 0 17 1 0 1 1 0 8 1 pfstscr 40 3 0 2 1 0 1 1 0 8 0 pfrktable 1344 3 0 3 1 0 1 1 0 8 1 pfstitem 24 3 0 0 1 0 1 1 0 8 0 pfstkey 128 7 0 5 1 0 1 1 0 8 0 pfstate 384 4 0 2 1 0 1 1 0 8 0 pfrule 1344 3 0 3 1 0 1 1 0 8 1 rttmr 136 7 0 7 1 0 1 1 0 8 1 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 958 0 502 29 0 29 29 0 8 0 art_table 40 962 0 502 5 0 5 5 0 8 0 art_node 32 197 0 108 1 0 1 1 0 8 0 sysvmsgpl 40 21 0 14 1 0 1 1 0 8 0 semapl 112 66 0 56 1 0 1 1 0 8 0 shmpl 112 119 0 2 4 0 4 4 0 8 0 dirhash 1024 31 0 14 3 0 3 3 0 8 0 dino2pl 256 4586 0 3084 95 0 95 95 0 8 0 ffsino 256 4586 0 3084 95 0 95 95 0 8 0 nchpl 144 6987 0 5293 64 0 64 64 0 8 0 rtmask 32 16 0 16 1 0 1 1 0 8 1 vnodes 216 5912 0 0 329 0 329 329 0 8 0 namei 1024 23902 0 23902 2 0 2 2 0 8 2 vcpupl 3904 2 0 0 1 0 1 1 0 8 0 vmpool 800 4 0 2 1 0 1 1 0 8 0 kstatmem 264 172 0 150 2 0 2 2 0 8 0 scsiplug 72 4 0 4 1 0 1 1 0 8 1 scxspl 216 22440 0 22440 8 0 8 8 1 8 8 plimitpl 152 324 0 308 1 0 1 1 0 8 0 sigapl 424 2030 0 1987 6 0 6 6 0 8 0 knotepl 120 62933 0 62885 40 30 10 22 0 8 8 kqueuepl 184 713 0 703 7 0 7 7 0 8 6 pipepl 304 303 0 276 7 0 7 7 0 8 4 fdescpl 448 2010 0 1982 5 0 5 5 0 8 1 filepl 120 13127 0 12915 15 0 15 15 0 8 7 lockfpl 104 713 0 710 2 0 2 2 0 8 1 lockfspl 48 291 0 288 1 0 1 1 0 8 0 sessionpl 144 28 0 20 1 0 1 1 0 8 0 pgrppl 48 62 0 46 1 0 1 1 0 8 0 ucredpl 104 1905 0 1893 1 0 1 1 0 8 0 zombiepl 144 1990 0 1987 1 0 1 1 0 8 0 processpl 1152 2030 0 1987 4 0 4 4 0 8 0 procpl 664 4379 0 4331 6 0 6 6 0 8 0 sosppl 176 9 0 9 1 0 1 1 0 8 1 sockpl 552 3462 0 3435 17 5 12 13 0 8 8 mcl64k 65536 200 0 200 2 0 2 2 0 8 2 mcl16k 16384 1 0 1 1 0 1 1 0 8 1 mcl9k 9216 2 0 2 1 0 1 1 0 8 1 mcl8k 8192 19 0 19 1 0 1 1 0 8 1 mcl4k 4096 4518 0 4463 16 1 15 16 0 8 7 mcl2k 2048 2597 0 2585 10 0 10 10 0 8 8 mtagpl 96 156 0 51 3 0 3 3 0 8 0 mbufpl 256 22766 0 22513 51 28 23 38 0 8 7 bufpl 280 6559 0 338 445 0 445 445 0 8 0 anonpl 24 278546 0 275416 70 0 70 70 0 187 41 amapchunkpl 152 58094 0 57609 31 0 31 31 0 158 10 amappl16 200 3795 0 3762 26 14 12 15 0 8 8 amappl15 192 4 0 4 1 0 1 1 0 8 1 amappl14 184 17 0 17 1 0 1 1 0 8 1 amappl13 176 453 0 451 1 0 1 1 0 8 0 amappl12 168 2378 0 2340 2 0 2 2 0 8 0 amappl11 160 5 0 5 1 0 1 1 0 8 1 amappl10 152 51 0 40 1 0 1 1 0 8 0 amappl9 144 257 0 257 1 0 1 1 0 8 1 amappl8 136 23 0 22 1 0 1 1 0 8 0 amappl7 128 94 0 93 1 0 1 1 0 8 0 amappl6 120 308 0 296 1 0 1 1 0 8 0 amappl5 112 68 0 60 1 0 1 1 0 8 0 amappl4 104 404 0 380 1 0 1 1 0 8 0 amappl3 96 11521 0 11413 4 0 4 4 0 8 0 amappl2 88 560 0 503 2 0 2 2 0 8 0 amappl1 80 15756 0 15217 13 0 13 13 0 8 1 amappl 88 15777 0 15613 5 0 5 5 0 92 0 uvmvnodes 80 161 0 0 4 0 4 4 0 8 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 128 254 0 254 1 0 1 1 0 8 1 dma64 64 9 0 9 1 0 1 1 0 8 1 dma32 32 9 0 9 1 0 1 1 0 8 1 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 125 0 4 3 0 3 3 0 8 0 uaddrrnd 24 2010 0 1981 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2010 0 1981 1 0 1 1 0 8 0 vmmpekpl 168 15999 0 15957 3 0 3 3 0 8 0 vmmpepl 168 126403 0 124613 92 0 92 92 0 357 10 vmsppl 368 2009 0 1981 4 0 4 4 0 8 1 rwobjpl 40 30967 0 29833 15 0 15 15 0 8 2 pdppl 4096 4035 0 3968 105 34 71 81 0 8 4 pvpl 32 829889 0 821109 143 0 143 143 0 265 52 pmappl 216 2013 0 1983 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 435 0 63 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ffs2_balloc(fffffd8075781d00,40003027f,40,fffffd8007bfdaf8,1,ffff80003810f088) at ffs2_balloc+0xa0a sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff80003810f110) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd806c5e26d0,ffff80003810f1a8,23,fffffd8007bfdaf8) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 vn_rdwr(1,fffffd806c5e26d0,ffff80003810f2e0,40,0,1,b6493b617fd667b9,0,1008,0) at vn_rdwr+0x12d sys/kern/vfs_vnops.c:324 acct_process(ffff80002a776d00) at acct_process+0x7a2 sys/kern/kern_acct.c:245 exit1(ffff80002a776d00,0,0,1) at exit1+0x5c4 sys/kern/kern_exit.c:228 sys_exit(ffff80002a776d00,ffff80003810f510,ffff80003810f460) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003810f510) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003810f510) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ea25ffdbf50, count: -9 ddb> machine ddbcpu 1 No such command ddb> trace ffs2_balloc(fffffd8075781d00,40003027f,40,fffffd8007bfdaf8,1,ffff80003810f088) at ffs2_balloc+0xa0a sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff80003810f110) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd806c5e26d0,ffff80003810f1a8,23,fffffd8007bfdaf8) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 vn_rdwr(1,fffffd806c5e26d0,ffff80003810f2e0,40,0,1,b6493b617fd667b9,0,1008,0) at vn_rdwr+0x12d sys/kern/vfs_vnops.c:324 acct_process(ffff80002a776d00) at acct_process+0x7a2 sys/kern/kern_acct.c:245 exit1(ffff80002a776d00,0,0,1) at exit1+0x5c4 sys/kern/kern_exit.c:228 sys_exit(ffff80002a776d00,ffff80003810f510,ffff80003810f460) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003810f510) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003810f510) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ea25ffdbf50, count: -9