uvm_fault(0xffffffff83a06b78, 0xffff8000288921a0, 0, 1) -> d kernel: page fault trap, code=0 Stopped at ffs2_balloc+0xa0d: movq 0(%rcx,%rax,8),%r14 TID PID UID PRFLAGS PFLAGS CPU COMMAND ffs2_balloc(fffffd806f107c10,100140,40,fffffd80097fd410,1,ffff8000333c1688) at ffs2_balloc+0xa0d sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff8000333c1710) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd805f28c368,ffff8000333c17a8,23,fffffd80097fd410) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 vn_rdwr(1,fffffd805f28c368,ffff8000333c18e0,40,0,1,141da7e30c62b0ae,0,1008,40) at vn_rdwr+0x12d sys/kern/vfs_vnops.c:324 acct_process(ffff8000ffffd230) at acct_process+0x7a2 sys/kern/kern_acct.c:245 exit1(ffff8000ffffd230,0,0,1) at exit1+0x5c4 sys/kern/kern_exit.c:228 sys_exit(ffff8000ffffd230,ffff8000333c1b20,ffff8000333c1a70) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff8000333c1b20) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000333c1b20) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c6118769960, 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: uvm_fault(0xffffffff83a06b78, 0xffff8000288921a0, 0, 1) -> d ddb{0}> trace ffs2_balloc(fffffd806f107c10,100140,40,fffffd80097fd410,1,ffff8000333c1688) at ffs2_balloc+0xa0d sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff8000333c1710) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd805f28c368,ffff8000333c17a8,23,fffffd80097fd410) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 vn_rdwr(1,fffffd805f28c368,ffff8000333c18e0,40,0,1,141da7e30c62b0ae,0,1008,40) at vn_rdwr+0x12d sys/kern/vfs_vnops.c:324 acct_process(ffff8000ffffd230) at acct_process+0x7a2 sys/kern/kern_acct.c:245 exit1(ffff8000ffffd230,0,0,1) at exit1+0x5c4 sys/kern/kern_exit.c:228 sys_exit(ffff8000ffffd230,ffff8000333c1b20,ffff8000333c1a70) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff8000333c1b20) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000333c1b20) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c6118769960, count: -9 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff8000333c1630 rbx 0 rdx 0 rcx 0xffff800028892000 rax 0x34 r8 0xffffffffffffffff r9 0xffff8000333c1688 r10 0x78231bc66bd04f8b r11 0x13ac590e5ae97ec6 r12 0x1 r13 0xffff800000c31800 r14 0xffff8000333c14c0 r15 0xfffffd805ffc2a10 rip 0xffffffff82c7da2d ffs2_balloc+0xa0d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000333c14b0 ss 0 ffs2_balloc+0xa0d: movq 0(%rcx,%rax,8),%r14 ddb{0}> show proc PROC (syz-executor) tid=53767 pid=95711 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=16, usrpri=50, slppri=16, nice=20 wchan=0x0, wmesg=, ps_single=0xffff8000ffffd230 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff8000333c2fb8,0xffffffff83987348 process=0xffff800037bc6b70 user=0xffff8000333bc000, vmspace=0xfffffd806c0b2b90 estcpu=36, cpticks=3, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 69605 481461 24913 0 2 0 syz-executor 69605 117676 24913 0 3 0x4000080 fsleep syz-executor 64 186394 69128 0 2 0 syz-executor 64 493628 69128 0 3 0x4000080 fsleep syz-executor 23434 348426 68306 0 2 0 syz-executor 23434 213336 68306 0 3 0x4000080 fsleep syz-executor 23434 256017 68306 0 3 0x4000080 fsleep syz-executor 5449 172913 27235 0 2 0 syz-executor 5449 193826 27235 0 3 0x4000080 fsleep syz-executor 5449 420198 27235 0 3 0x4000080 fsleep syz-executor 30776 65437 74096 0 2 0 syz-executor 30776 137159 74096 0 3 0x4000080 fsleep syz-executor 39117 422411 57156 0 2 0 syz-executor 39117 522417 57156 0 3 0x4000080 bell syz-executor 39117 105960 57156 0 3 0x4000080 bell syz-executor 39117 377861 57156 0 2 0x4000000 syz-executor 38600 464209 0 0 3 0x14200 acct acct 69128 522933 96059 0 2 0xc82 syz-executor 68306 41000 96059 0 2 0xc82 syz-executor 27235 220681 96059 0 3 0x82 nanoslp syz-executor 43906 74865 1 0 3 0x100083 ttyopn getty 77170 228004 36871 0 3 0x100082 sbwait arp 36871 138883 1 0 3 0x10008a sigsusp sh 96541 512234 96059 0 3 0x82 nanoslp syz-executor 24913 339541 96059 0 2 0xc82 syz-executor 74096 29639 96059 0 3 0x82 nanoslp syz-executor 57156 78176 96059 0 3 0x82 nanoslp syz-executor 96059 344985 74273 0 3 0x82 wait syz-executor 74273 204258 1765 0 3 0x10008a sigsusp ksh 1765 497013 15195 0 3 0x98 kqread sshd-session 15195 231728 75266 0 3 0x92 kqread sshd-session 75266 320889 1 0 3 0x88 kqread sshd 64636 40071 70672 74 3 0x1100092 bpf pflogd 70672 355765 1 0 3 0x80 sbwait pflogd 88632 134774 31062 73 3 0x1100090 kqread syslogd 31062 462808 1 0 3 0x100082 sbwait syslogd 90416 402411 1 0 3 0x100080 kqread resolvd 46963 375969 93577 77 3 0x100092 kqread dhcpleased 29126 357752 93577 77 3 0x100092 kqread dhcpleased 93577 157824 1 0 3 0x80 kqread dhcpleased 60041 88700 0 0 3 0x14200 bored smr 44831 157720 0 0 2 0x14200 zerothread 97858 331301 0 0 3 0x14200 aiodoned aiodoned 33658 351527 0 0 3 0x14200 syncer update 79858 38448 0 0 3 0x14200 cleaner cleaner 39140 379640 0 0 3 0x14200 reaper reaper 84415 339468 0 0 3 0x14200 pgdaemon pagedaemon 50561 226915 0 0 3 0x14200 bored viomb 83210 319245 0 0 3 0x40014200 acpi0 acpi0 3727 343386 0 0 7 0x40014200 idle1 35094 428693 0 0 3 0x14200 bored softnet1 40346 499971 0 0 3 0x14200 bored softnet0 66561 235645 0 0 3 0x14200 bored systqmp 41792 445066 0 0 3 0x14200 bored systq 43104 262818 0 0 3 0x14200 tmoslp softclockmp 45611 105280 0 0 3 0x40014200 tmoslp softclock 54053 286283 0 0 3 0x40014200 idle0 1 361517 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11071 12089K 12411K 166960K 13874 0 pcb 17 12K 12K 166960K 228 0 rtable 128 5K 8K 166960K 598 0 pf 33 17K 23K 166960K 196 0 ifaddr 25 4K 7K 166960K 100 0 ifgroup 46 2K 2K 166960K 185 0 sysctl 3 1K 9K 166960K 12 0 counters 64 36K 37K 166960K 152 0 ioctlops 0 0K 4K 166960K 1668 0 iov 0 0K 28K 166960K 57 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1291 81K 81K 166960K 2678 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 20K 24K 166960K 13 0 VM map 2 1K 1K 166960K 2 0 sem 20 16K 16K 166960K 56 0 dirhash 12 2K 2K 166960K 33 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 236K 166960K 3563 0 sigio 0 0K 0K 166960K 34 0 proc 73 115K 164K 166960K 801 0 subproc 81 5K 5K 166960K 100 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 208 0 in_multi 36 2K 6K 166960K 223 0 ether_multi 1 0K 0K 166960K 52 0 mrt 1 0K 0K 166960K 54 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 121 546K 546K 166960K 121 0 exec 0 0K 1K 166960K 605 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 251 162K 175K 166960K 30391 0 UVM aobj 8 2K 2K 166960K 10 0 pinsyscall 45 90K 104K 166960K 4757 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 82 0 NDP 9 0K 1K 166960K 73 0 temp 76 9088K 9342K 166960K 101075 0 kqueue 14 22K 26K 166960K 337 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 26 0 0 1 0 1 1 0 8 0 rtpcb 120 126 0 122 1 0 1 1 0 8 0 rtentry 176 170 0 122 5 2 3 5 0 8 0 unpcb 144 785 0 766 1 0 1 1 0 8 0 syncache 336 3 0 3 1 1 0 1 0 8 0 tcpcb 736 328 0 324 1 0 1 1 0 8 0 arp 136 33 0 24 1 0 1 1 0 8 0 inpcb 328 999 0 992 2 1 1 2 0 8 0 nd6 152 30 0 21 1 0 1 1 0 8 0 pkpcb 40 3 0 3 2 2 0 1 0 8 0 kcovpl 48 11 0 2 1 0 1 1 0 8 0 ppxss 1192 24 0 24 3 2 1 1 0 8 1 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pffrag 232 11 0 5 1 0 1 1 0 482 0 pffrnode 88 11 0 5 1 0 1 1 0 8 0 pffrent 40 16 0 10 1 0 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 6 0 5 1 0 1 1 0 8 0 pfsrclim 320 3 0 3 2 2 0 1 0 8 0 pfanchor 1288 3 0 1 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 65 0 39 1 0 1 1 0 8 0 pfstkey 128 71 0 44 2 0 2 2 0 8 0 pfstate 448 67 0 42 4 0 4 4 0 8 0 pfrule 1360 36 0 30 2 1 1 2 0 8 0 art_heap8 4096 4 0 1 4 1 3 4 0 8 0 art_heap4 256 621 0 448 29 14 15 26 0 8 1 art_table 40 625 0 449 5 2 3 5 0 8 0 art_node 32 169 0 129 1 0 1 1 0 8 0 sysvmsgpl 40 27 0 8 1 0 1 1 0 8 0 semupl 112 6 0 6 4 3 1 1 0 8 1 semapl 112 45 0 27 1 0 1 1 0 8 0 shmpl 112 7 0 2 1 0 1 1 0 8 0 dirhash 1024 31 0 14 3 0 3 3 0 8 0 dino2pl 256 6881 0 5423 92 0 92 92 0 8 0 ffsino 296 6881 0 5423 114 0 114 114 0 8 0 nchpl 144 10967 0 9261 64 0 64 64 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 28161 0 28161 3 2 1 2 0 8 1 percpumem 16 91 0 44 1 0 1 1 0 8 0 pfiaddrpl 120 1 0 1 1 1 0 1 0 8 0 kstatmem 264 110 0 88 3 1 2 3 0 8 0 acpiwqpl 32 3 0 3 1 0 1 1 1 8 1 scsiplug 72 16 0 16 4 3 1 1 0 8 1 scxspl 216 37641 0 37641 11 10 1 8 1 8 1 plimitpl 152 293 0 274 1 0 1 1 0 8 0 sigapl 424 3859 0 3809 7 1 6 7 0 8 0 knotepl 120 617 0 0 17 0 17 17 0 8 0 kqueuepl 224 331 0 320 1 0 1 1 0 8 0 pipepl 344 167 0 137 4 1 3 3 0 8 0 fdescpl 528 3835 0 3803 3 0 3 3 0 8 0 filepl 160 10821 0 10589 11 0 11 11 0 8 0 lockfpl 104 734 0 732 1 0 1 1 0 8 0 lockfspl 48 300 0 298 1 0 1 1 0 8 0 sessionpl 144 90 0 81 1 0 1 1 0 8 0 pgrppl 48 112 0 94 1 0 1 1 0 8 0 ucredpl 104 2708 0 2694 1 0 1 1 0 8 0 zombiepl 144 3811 0 3809 2 1 1 1 0 8 0 processpl 1232 3859 0 3809 5 0 5 5 0 8 0 procpl 664 7594 0 7534 6 0 6 6 0 8 0 sockpl 752 1935 0 1905 4 0 4 4 0 8 1 mcl64k 65536 12 0 0 2 0 2 2 0 8 0 mcl16k 16384 17 0 0 3 0 3 3 0 8 0 mcl12k 12288 12 0 0 2 0 2 2 0 8 0 mcl9k 9216 6 0 0 1 0 1 1 0 8 0 mcl8k 8192 13 0 0 2 0 2 2 0 8 0 mcl4k 4096 108 0 0 14 0 14 14 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 26 0 0 4 0 4 4 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 228 0 0 13 0 13 13 0 8 0 bufpl 280 11300 0 5170 438 0 438 438 0 8 0 anonpl 32 9658 0 0 78 0 78 78 0 246 0 amapchunkpl 152 103410 0 102774 40 14 26 27 0 158 0 amappl16 200 9158 0 9104 52 34 18 18 0 8 14 amappl15 192 3 0 3 1 1 0 1 0 8 0 amappl14 184 462 0 460 2 1 1 1 0 8 0 amappl13 176 127 0 114 1 0 1 1 0 8 0 amappl12 168 4103 0 4071 2 0 2 2 0 8 0 amappl11 160 11 0 11 2 2 0 1 0 8 0 amappl10 152 92 0 78 1 0 1 1 0 8 0 amappl9 144 264 0 264 2 2 0 1 0 8 0 amappl8 136 110 0 108 1 0 1 1 0 8 0 amappl7 128 204 0 190 1 0 1 1 0 8 0 amappl6 120 188 0 186 2 1 1 1 0 8 0 amappl5 112 89 0 79 1 0 1 1 0 8 0 amappl4 104 300 0 281 1 0 1 1 0 8 0 amappl3 96 22909 0 22788 4 0 4 4 0 8 0 amappl2 88 537 0 477 2 0 2 2 0 8 0 amappl1 80 23119 0 22484 16 1 15 15 0 8 0 amappl 88 29449 0 29274 5 0 5 5 0 92 0 uvmvnodes 80 170 0 0 4 0 4 4 0 8 0 dma65536 65536 5 0 5 3 3 0 1 0 8 0 dma32768 32768 4 0 4 2 1 1 1 0 8 1 dma16384 16384 1 0 1 1 0 1 1 0 8 1 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma2048 2048 8 0 8 3 2 1 1 0 8 1 dma1024 1024 3 0 2 1 0 1 1 0 8 0 dma256 256 13 0 13 5 5 0 1 0 8 0 dma128 128 262 0 262 4 3 1 1 0 8 1 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 21 0 20 1 0 1 1 0 8 0 aobjpl 72 9 0 2 1 0 1 1 0 8 0 uaddrrnd 24 3835 0 3802 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3835 0 3802 1 0 1 1 0 8 0 vmmpekpl 168 24196 0 24142 3 0 3 3 0 8 0 vmmpepl 168 228013 0 225989 116 15 101 101 0 357 9 vmsppl 488 3834 0 3802 5 0 5 5 0 8 0 rwobjpl 80 51366 0 50188 34 4 30 30 0 8 1 pdppl 4096 7677 0 7604 111 36 75 85 0 8 2 pvpl 32 17882 0 0 144 0 144 144 0 265 0 pmappl 256 3834 0 3802 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 307 0 67 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace ffs2_balloc(fffffd806f107c10,100140,40,fffffd80097fd410,1,ffff8000333c1688) at ffs2_balloc+0xa0d sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff8000333c1710) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd805f28c368,ffff8000333c17a8,23,fffffd80097fd410) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 vn_rdwr(1,fffffd805f28c368,ffff8000333c18e0,40,0,1,141da7e30c62b0ae,0,1008,40) at vn_rdwr+0x12d sys/kern/vfs_vnops.c:324 acct_process(ffff8000ffffd230) at acct_process+0x7a2 sys/kern/kern_acct.c:245 exit1(ffff8000ffffd230,0,0,1) at exit1+0x5c4 sys/kern/kern_exit.c:228 sys_exit(ffff8000ffffd230,ffff8000333c1b20,ffff8000333c1a70) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff8000333c1b20) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000333c1b20) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c6118769960, count: -9 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299bdff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 acpicpu_idle() at acpicpu_idle+0x457 sys/dev/acpi/acpicpu_x86.c:1224 sched_idle(ffff8000299bdff0) at sched_idle+0x391 sys/kern/kern_sched.c:191 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff8000299bdff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 acpicpu_idle() at acpicpu_idle+0x457 sys/dev/acpi/acpicpu_x86.c:1224 sched_idle(ffff8000299bdff0) at sched_idle+0x391 sys/kern/kern_sched.c:191 end trace frame: 0x0, count: -5