uvm_fault(0xffffffff83a92ba0, 0xffff80001a282000, 0, 2) -> d kernel: page fault trap, code=2 Stopped at memset+0x52: repe stosq %es:(%rdi) TID PID UID PRFLAGS PFLAGS CPU COMMAND memset() at memset+0x52 ffs_write(ffff80002a24de50) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd806fe3b980,ffff80002a24dee0,0,fffffd80097fd5b0) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 uvn_io(fffffd806ee137d8,ffff80002a24e060,3,39,1) at uvn_io+0x498 sys/uvm/uvm_vnode.c:1232 uvm_pager_put(fffffd806ee137d8,fffffd800882bd20,ffff80002a24e100,ffff80002a24e124,39,0,eb0a64d00335fed0) at uvm_pager_put+0x10a sys/uvm/uvm_pager.c:505 uvn_flush(fffffd806ee137d8,0,0,19) at uvn_flush+0x690 sys/uvm/uvm_vnode.c:705 uvn_detach(fffffd806ee137d8) at uvn_detach+0xcf sys/uvm/uvm_vnode.c:344 uvm_unmap_detach(ffff80002a24e230,0) at uvm_unmap_detach+0x15e sys/uvm/uvm_map.c:1370 uvm_map_teardown(fffffd806e8113e0) at uvm_map_teardown+0x360 sys/uvm/uvm_map.c:2536 exit1(ffff8000ffffd4c8,43,0,1) at exit1+0x6fc sys/kern/kern_exit.c:260 sys_exit(ffff8000ffffd4c8,ffff80002a24e400,ffff80002a24e350) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a24e400) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a24e400) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ec568bc7c30, count: 2 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: uvm_fault(0xffffffff83a92ba0, 0xffff80001a282000, 0, 2) -> d ddb{1}> trace memset() at memset+0x52 ffs_write(ffff80002a24de50) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd806fe3b980,ffff80002a24dee0,0,fffffd80097fd5b0) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 uvn_io(fffffd806ee137d8,ffff80002a24e060,3,39,1) at uvn_io+0x498 sys/uvm/uvm_vnode.c:1232 uvm_pager_put(fffffd806ee137d8,fffffd800882bd20,ffff80002a24e100,ffff80002a24e124,39,0,eb0a64d00335fed0) at uvm_pager_put+0x10a sys/uvm/uvm_pager.c:505 uvn_flush(fffffd806ee137d8,0,0,19) at uvn_flush+0x690 sys/uvm/uvm_vnode.c:705 uvn_detach(fffffd806ee137d8) at uvn_detach+0xcf sys/uvm/uvm_vnode.c:344 uvm_unmap_detach(ffff80002a24e230,0) at uvm_unmap_detach+0x15e sys/uvm/uvm_map.c:1370 uvm_map_teardown(fffffd806e8113e0) at uvm_map_teardown+0x360 sys/uvm/uvm_map.c:2536 exit1(ffff8000ffffd4c8,43,0,1) at exit1+0x6fc sys/kern/kern_exit.c:260 sys_exit(ffff8000ffffd4c8,ffff80002a24e400,ffff80002a24e350) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a24e400) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a24e400) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ec568bc7c30, count: -13 ddb{1}> show registers rdi 0xffff80001a282000 rsi 0 rbp 0xffff80002a24dd70 rbx 0x4000 __ALIGN_SIZE+0x3000 rdx 0 rcx 0x800 rax 0 r8 0x4000 __ALIGN_SIZE+0x3000 r9 0xffff80002a24dcc8 r10 0xa31598e4e1ff943c r11 0xffff80001a282000 r12 0 r13 0xfffffd806d8244b0 r14 0xfffffd8061b7a128 r15 0x1 rip 0xffffffff82fbdf72 memset+0x52 cs 0x8 rflags 0x10206 __ALIGN_SIZE+0xf206 rsp 0xffff80002a24dbe8 ss 0x10 memset+0x52: repe stosq %es:(%rdi) ddb{1}> show proc PROC (syz-executor) tid=57977 pid=8455 tcnt=0 stat=onproc flags process=1000000a proc=2000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=1 forw=0xffffffffffffffff, list=0xffff8000ffffc2a0,0xffff80003b3bb4f0 process=0xffff8000ffff2690 user=0xffff80002a249000, vmspace=0xfffffd806e8113e0 estcpu=36, cpticks=71, pctcpu=0.25, user=0, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 74054 353869 1 0 3 0x100083 ttyin getty 92020 286528 0 0 3 0x14200 acct acct 27698 27362 0 0 3 0x14280 nfsidl nfsio 57404 238106 0 0 3 0x14280 nfsidl nfsio 40867 406382 0 0 3 0x14280 nfsidl nfsio 62495 342618 0 0 3 0x14280 nfsidl nfsio 77100 120800 0 0 3 0x14280 nfsidl nfsio 86530 28382 0 0 3 0x14280 nfsidl nfsio 92159 11219 0 0 3 0x14280 nfsidl nfsio 92732 230219 0 0 3 0x14280 nfsidl nfsio 90713 135466 0 0 3 0x14280 nfsidl nfsio 14559 70006 0 0 3 0x14280 nfsidl nfsio 64288 295737 0 0 3 0x14280 nfsidl nfsio 47046 265315 0 0 3 0x14280 nfsidl nfsio 10486 491937 0 0 3 0x14280 nfsidl nfsio 44608 61208 0 0 3 0x14280 nfsidl nfsio 87960 221815 0 0 3 0x14280 nfsidl nfsio 56688 78115 0 0 3 0x14280 nfsidl nfsio 50404 456399 0 0 3 0x14280 nfsidl nfsio 24342 85017 0 0 3 0x14280 nfsidl nfsio 40624 6580 0 0 3 0x14280 nfsidl nfsio 51302 110859 0 0 3 0x14280 nfsidl nfsio 28691 156286 0 0 3 0x14200 bored smr 67231 13909 0 0 3 0x14200 pgzero zerothread 8419 412606 0 0 3 0x14200 aiodoned aiodoned 85265 185075 0 0 3 0x14200 syncer update 55853 139154 0 0 3 0x14200 cleaner cleaner 93090 242781 0 0 3 0x14200 reaper reaper 21388 190378 0 0 3 0x14200 pgdaemon pagedaemon 4642 476129 0 0 3 0x14200 bored viomb 44601 381957 0 0 3 0x40014200 acpi0 acpi0 48336 312025 0 0 3 0x40014200 idle1 30952 135861 0 0 3 0x14200 bored softnet1 58718 311501 0 0 3 0x14200 bored softnet0 42993 386017 0 0 3 0x14200 bored systqmp 34670 335580 0 0 3 0x14200 bored systq 5799 363348 0 0 3 0x14200 tmoslp softclockmp 55229 211981 0 0 3 0x40014200 tmoslp softclock 43251 436853 0 0 7 0x40014200 idle0 1 210824 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11028 12014K 12408K 166960K 12588 0 pcb 17 13K 14K 166960K 120 0 rtable 57 3K 9K 166960K 427 0 pf 20 15K 24K 166960K 102 0 ifaddr 11 1K 7K 166960K 62 0 ifgroup 22 1K 2K 166960K 82 0 sysctl 4 1K 9K 166960K 11 0 counters 54 35K 37K 166960K 106 0 ioctlops 0 0K 4K 166960K 1538 0 iov 0 0K 12K 166960K 14 0 mount 1 1K 1K 166960K 1 0 log 2 4K 4K 166960K 6 0 vnodes 1352 85K 86K 166960K 1685 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 10 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 82 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 0 0K 85K 166960K 600 0 sigio 0 0K 0K 166960K 3 0 proc 21 33K 164K 166960K 647 0 subproc 0 0K 4K 166960K 81 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 32 0 in_multi 11 0K 7K 166960K 114 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 18 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 61 281K 281K 166960K 61 0 exec 0 0K 1K 166960K 598 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 15 6K 165K 166960K 7123 0 UVM aobj 10 2K 2K 166960K 10 0 pinsyscall 3 6K 99K 166960K 2056 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 23 0 NDP 4 0K 2K 166960K 41 0 temp 16 9115K 9254K 166960K 23150 0 kqueue 0 0K 31K 166960K 102 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> 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 55 0 55 1 0 1 1 0 8 1 rtentry 176 129 0 116 6 0 6 6 0 8 4 unpcb 144 273 0 273 3 2 1 3 0 8 1 syncache 336 5 0 5 2 1 1 1 0 8 1 tcpqe 32 1 0 1 1 0 1 1 0 8 1 tcpcb 736 93 0 92 1 0 1 1 0 8 0 arp 136 20 0 18 1 0 1 1 0 8 0 inpcb 328 427 0 426 6 0 6 6 0 8 5 nd6 152 31 0 31 2 0 2 2 0 8 2 pkpcb 40 9 0 9 1 0 1 1 0 8 1 kcovpl 48 9 0 9 1 0 1 1 0 8 1 ppxss 1192 16 0 16 1 0 1 1 0 8 1 pfstscr 40 4 0 4 1 0 1 1 0 8 1 pffrag 232 2 0 0 1 0 1 1 0 482 0 pffrnode 88 2 0 0 1 0 1 1 0 8 0 pffrent 40 2 0 0 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 pfanchor 1288 11 0 0 1 0 1 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 20 0 0 1 0 1 1 0 8 0 pfstkey 128 24 0 4 1 0 1 1 0 8 0 pfstate 448 22 0 2 3 0 3 3 0 8 0 pfrule 1360 23 0 17 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 596 0 477 31 4 27 31 0 8 16 art_table 40 597 0 477 6 0 6 6 0 8 4 art_node 32 129 0 118 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 3 1 0 1 1 0 8 0 semapl 72 78 0 68 1 0 1 1 0 8 0 shmpl 112 7 0 0 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 2302 0 825 93 0 93 93 0 8 0 ffsino 296 2325 0 848 115 0 115 115 0 8 0 nchpl 144 2807 0 1102 64 0 64 64 0 8 0 rtmask 32 7 0 7 1 0 1 1 0 8 1 vnodes 216 2611 0 0 146 0 146 146 0 8 0 namei 1024 9683 0 9683 4 0 4 4 0 8 4 percpumem 16 68 0 26 1 0 1 1 0 8 0 kstatmem 264 49 0 38 2 0 2 2 0 8 1 scsiplug 72 5 0 5 1 0 1 1 0 8 1 scxspl 216 14539 0 14539 9 2 7 7 1 8 7 plimitpl 152 204 0 195 1 0 1 1 0 8 0 sigapl 424 937 0 889 8 0 8 8 0 8 1 knotepl 120 747 0 0 23 0 23 23 0 8 0 kqueuepl 224 196 0 196 5 2 3 5 0 8 3 pipepl 344 558 0 558 5 0 5 5 0 8 5 fdescpl 528 900 0 897 3 0 3 3 0 8 1 filepl 160 4646 0 4644 13 3 10 13 0 8 8 lockfpl 104 134 0 134 1 0 1 1 0 8 1 lockfspl 48 59 0 59 1 0 1 1 0 8 1 sessionpl 144 36 0 33 1 0 1 1 0 8 0 pgrppl 48 184 0 174 1 0 1 1 0 8 0 ucredpl 104 529 0 527 1 0 1 1 0 8 0 zombiepl 144 897 0 889 1 0 1 1 0 8 0 processpl 1232 937 0 889 6 0 6 6 0 8 0 procpl 664 1483 0 1435 8 0 8 8 0 8 2 sockpl 752 775 0 774 8 0 8 8 0 8 7 mcl64k 65536 9 0 0 2 0 2 2 0 8 0 mcl16k 16384 5 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 132 0 0 17 0 17 17 0 8 0 mcl2k 2048 39 0 0 5 0 5 5 0 8 0 mtagpl 96 4 0 0 1 0 1 1 0 8 0 mbufpl 256 261 0 0 16 0 16 16 0 8 0 bufpl 280 9387 0 3226 441 0 441 441 0 8 0 anonpl 32 12029 0 0 98 0 98 98 0 246 0 amapchunkpl 152 22383 0 22346 41 0 41 41 0 158 36 amappl16 200 2422 0 2422 30 23 7 28 0 8 7 amappl15 192 9 0 9 1 0 1 1 0 8 1 amappl14 184 441 0 441 1 0 1 1 0 8 1 amappl13 176 126 0 125 1 0 1 1 0 8 0 amappl12 168 1285 0 1282 2 0 2 2 0 8 0 amappl11 160 5 0 5 1 1 0 1 0 8 0 amappl10 152 96 0 96 1 0 1 1 0 8 1 amappl9 144 275 0 274 1 0 1 1 0 8 0 amappl8 136 167 0 167 1 0 1 1 0 8 1 amappl7 128 151 0 149 1 0 1 1 0 8 0 amappl6 120 168 0 168 1 0 1 1 0 8 1 amappl5 112 97 0 96 1 0 1 1 0 8 0 amappl4 104 301 0 298 1 0 1 1 0 8 0 amappl3 96 4246 0 4237 4 0 4 4 0 8 0 amappl2 88 552 0 541 2 0 2 2 0 8 0 amappl1 80 12913 0 12874 14 3 11 14 0 8 8 amappl 88 6086 0 6076 5 0 5 5 0 92 1 uvmvnodes 80 108 0 0 3 0 3 3 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 253 0 253 1 1 0 1 0 8 0 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 18 0 17 1 0 1 1 0 8 0 aobjpl 72 9 0 0 1 0 1 1 0 8 0 uaddrrnd 24 900 0 897 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 900 0 897 1 0 1 1 0 8 0 vmmpekpl 168 10322 0 10303 3 0 3 3 0 8 0 vmmpepl 168 67924 0 67785 107 3 104 107 0 357 73 vmsppl 488 899 0 896 5 1 4 5 0 8 2 rwobjpl 80 20519 0 20324 32 3 29 32 0 8 6 pdppl 4096 1807 0 1792 95 68 27 81 0 8 12 pvpl 32 19741 0 0 162 2 160 161 0 265 0 pmappl 256 899 0 896 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 283 0 76 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff8390fff0) 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(ffffffff8390fff0) at sched_idle+0x371 sys/kern/kern_sched.c:192 end trace frame: 0x0, count: 10 ddb{0}> trace x86_ipi_db(ffffffff8390fff0) 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(ffffffff8390fff0) at sched_idle+0x371 sys/kern/kern_sched.c:192 end trace frame: 0x0, count: -5 ddb{0}> machine ddbcpu 1 Stopped at memset+0x52: repe stosq %es:(%rdi) memset() at memset+0x52 ffs_write(ffff80002a24de50) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd806fe3b980,ffff80002a24dee0,0,fffffd80097fd5b0) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 uvn_io(fffffd806ee137d8,ffff80002a24e060,3,39,1) at uvn_io+0x498 sys/uvm/uvm_vnode.c:1232 uvm_pager_put(fffffd806ee137d8,fffffd800882bd20,ffff80002a24e100,ffff80002a24e124,39,0,eb0a64d00335fed0) at uvm_pager_put+0x10a sys/uvm/uvm_pager.c:505 uvn_flush(fffffd806ee137d8,0,0,19) at uvn_flush+0x690 sys/uvm/uvm_vnode.c:705 uvn_detach(fffffd806ee137d8) at uvn_detach+0xcf sys/uvm/uvm_vnode.c:344 uvm_unmap_detach(ffff80002a24e230,0) at uvm_unmap_detach+0x15e sys/uvm/uvm_map.c:1370 uvm_map_teardown(fffffd806e8113e0) at uvm_map_teardown+0x360 sys/uvm/uvm_map.c:2536 exit1(ffff8000ffffd4c8,43,0,1) at exit1+0x6fc sys/kern/kern_exit.c:260 sys_exit(ffff8000ffffd4c8,ffff80002a24e400,ffff80002a24e350) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a24e400) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a24e400) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ec568bc7c30, count: 2 ddb{1}>