uvm_fault(0xfffffd806957a030, 0xe112a0, 0, 2) -> e kernel: page fault trap, code=2 Stopped at copyout+0x57: repe movsq (%rsi),%es:(%rdi) TID PID UID PRFLAGS PFLAGS CPU COMMAND *304232 18951 0 0 0x4000000 0 syz-executor copyout() at copyout+0x57 syscall(ffff800038c15e20) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800038c15e20) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x471957678d0, count: 12 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(0xfffffd806957a030, 0xe112a0, 0, 2) -> e ddb{0}> trace copyout() at copyout+0x57 syscall(ffff800038c15e20) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800038c15e20) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x471957678d0, count: -3 ddb{0}> show registers rdi 0xe112a0 acpi_pdirpa+0xdfd111 rsi 0xffff800038c15b60 rbp 0xffff800038c15d40 rbx 0x7f8ff6b __kernel_phys_end+0x458ff6b rdx 0xffff800038c10000 rcx 0x4 rax 0x20 r8 0x7f7fffffc000 r9 0 r10 0xc760fcbd8aabdbc0 r11 0xffffffff81006020 copy_fault r12 0x1 r13 0x16 r14 0xffff800038c15b60 r15 0xffff800038c15e20 rip 0xffffffff81005f47 copyout+0x57 cs 0x8 rflags 0x50202 acpi_pdirpa+0x3c073 rsp 0xffff800038c15a90 ss 0x10 copyout+0x57: repe movsq (%rsi),%es:(%rdi) ddb{0}> show proc PROC (syz-executor) tid=304232 pid=18951 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=86, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a340fd0,0xffff80003c456d40 process=0xffff80003c4bc9e8 user=0xffff800038c10000, vmspace=0xfffffd806957a030 estcpu=36, cpticks=108, pctcpu=0.87, user=0, sys=108, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 23692 225192 1823 0 2 0 syz-executor 7184 395607 28895 0 2 0 syz-executor 7184 475081 28895 0 3 0x4000080 fsleep syz-executor 21386 262693 26293 0 2 0 syz-executor 21386 298221 26293 0 3 0x4000080 fsleep syz-executor 34172 145993 1350 0 3 0x3000 suspend syz-executor 34172 393318 1350 0 2 0x4081000 syz-executor 96892 385798 92741 0 3 0 vmmaplk syz-executor 96892 508173 92741 0 2 0x4000000 syz-executor 96892 110322 92741 0 3 0x4000080 fsleep syz-executor 18951 283967 64175 0 2 0 syz-executor *18951 304232 64175 0 7 0x4000000 syz-executor 14707 92507 111 0 3 0x3000 suspend syz-executor 14707 357987 111 0 2 0x4081000 syz-executor 14707 161471 111 0 3 0x4081000 inode syz-executor 77793 404691 0 0 3 0x14200 acct acct 1823 160520 81057 0 3 0x82 nanoslp syz-executor 26293 385046 81057 0 3 0x82 nanoslp syz-executor 79235 190329 1 0 3 0x100083 ttyopn getty 38855 35998 0 0 3 0x14200 bored sosplice 92741 465763 81057 0 2 0xc82 syz-executor 97185 127339 81057 0 3 0x82 wait syz-executor 28895 260172 81057 0 3 0x82 nanoslp syz-executor 111 504791 81057 0 3 0x82 wait syz-executor 64175 431103 81057 0 3 0x82 wait syz-executor 1350 197986 81057 0 2 0xc82 syz-executor 81057 120945 26921 0 3 0x82 kqread syz-executor 26921 385346 88252 0 3 0x10008a sigsusp ksh 88252 445151 23377 0 3 0x98 kqread sshd-session 23377 31067 24864 0 3 0x92 kqread sshd-session 24864 172044 1 0 3 0x88 kqread sshd 42130 83187 56747 74 3 0x1100092 bpf pflogd 56747 117669 1 0 3 0x80 sbwait pflogd 9755 199410 46063 73 3 0x1100090 kqread syslogd 46063 449346 1 0 3 0x100082 sbwait syslogd 8228 243654 1 0 3 0x100080 kqread resolvd 68522 15300 86628 77 3 0x100092 kqread dhcpleased 74447 120961 86628 77 3 0x100092 kqread dhcpleased 86628 190891 1 0 3 0x80 kqread dhcpleased 62932 135759 0 0 3 0x14200 bored smr 16894 436049 0 0 2 0x14200 zerothread 14417 357417 0 0 3 0x14200 aiodoned aiodoned 98558 317594 0 0 3 0x14200 syncer update 60419 253714 0 0 3 0x14200 cleaner cleaner 80214 420920 0 0 3 0x14200 reaper reaper 21793 65182 0 0 3 0x14200 pgdaemon pagedaemon 65057 76500 0 0 3 0x14200 bored viomb 83560 507137 0 0 3 0x40014200 acpi0 acpi0 74844 522779 0 0 7 0x40014200 idle1 85809 469941 0 0 3 0x14200 bored softnet7 56950 160902 0 0 3 0x14200 bored softnet6 27616 171815 0 0 3 0x14200 bored softnet5 9131 366139 0 0 3 0x14200 bored softnet4 30705 365152 0 0 3 0x14200 bored softnet3 16914 272268 0 0 3 0x14200 bored softnet2 80797 226450 0 0 3 0x14200 bored softnet1 34998 203438 0 0 3 0x14200 bored softnet0 4552 349407 0 0 3 0x14200 bored systqmp 23110 510746 0 0 3 0x14200 bored systq 34648 405450 0 0 3 0x14200 tmoslp softclockmp 24086 201457 0 0 3 0x40014200 tmoslp softclock 7309 83740 0 0 3 0x40014200 idle0 1 196736 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 34172 (syz-executor) thread 0xffff80003c458d20 (393318) exclusive rrwlock inode r = 0 (0xfffffd806e146dd0) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vn_write+0x18f sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x242 sys/kern/sys_generic.c:380 #7 sys_write+0xa2 sys/kern/sys_generic.c:300 #8 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 #9 Xsyscall+0x128 Process 96892 (syz-executor) thread 0xffff80003c456568 (508173) exclusive rwlock vmmaplk r = 0 (0xfffffd806ef8ca90) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5168 #3 uvmfault_lookup+0xe8 sys/uvm/uvm_fault.c:1918 #4 uvm_fault_check+0x895 uvmfault_amapcopy sys/uvm/uvm_fault.c:235 [inline] #4 uvm_fault_check+0x895 sys/uvm/uvm_fault.c:784 #5 uvm_fault+0x106 sys/uvm/uvm_fault.c:677 #6 kpageflttrap+0x2f4 sys/arch/amd64/amd64/trap.c:283 #7 kerntrap+0x198 sys/arch/amd64/amd64/trap.c:491 #8 alltraps_kern_meltdown+0x7b #9 _copyin+0x57 #10 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 #11 Xsyscall+0x128 Process 14707 (syz-executor) thread 0xffff80002a341cc8 (357987) exclusive rrwlock inode r = 0 (0xfffffd806e4a2930) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vn_write+0x18f sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x242 sys/kern/sys_generic.c:380 #7 sys_write+0xa2 sys/kern/sys_generic.c:300 #8 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10215 11062K 11361K 166960K 12914 0 pcb 19 15K 17K 166960K 483 0 rtable 188 10K 11K 166960K 453 0 pf 33 17K 81K 166960K 184 0 ifaddr 37 6K 8K 166960K 121 0 ifgroup 51 2K 2K 166960K 202 0 sysctl 4 1K 9K 166960K 17 0 counters 66 36K 37K 166960K 494 0 ioctlops 0 0K 4K 166960K 1840 0 iov 0 0K 20K 166960K 122 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1433 90K 90K 166960K 2621 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 9 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 53 0 dirhash 12 2K 2K 166960K 27 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 236K 166960K 1154 0 sigio 0 0K 0K 166960K 23 0 proc 72 115K 164K 166960K 682 0 subproc 72 4K 4K 166960K 90 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 126 0 in_multi 80 5K 7K 166960K 164 0 ether_multi 1 0K 0K 166960K 7 0 mrt 2 0K 0K 166960K 5 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 588 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 244 160K 174K 166960K 12149 0 UVM aobj 43 4K 4K 166960K 43 0 pinsyscall 43 86K 106K 166960K 2294 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 60 0 NDP 11 0K 2K 166960K 83 0 temp 80 8652K 8723K 166960K 53757 0 kqueue 14 22K 32K 166960K 240 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 120 120 0 117 1 0 1 1 0 8 0 rtentry 176 151 0 81 5 0 5 5 0 8 0 unpcb 144 994 0 977 9 8 1 6 0 8 0 syncache 336 6 0 6 3 3 0 1 0 8 0 tcpqe 32 3 0 3 3 3 0 1 0 8 0 tcpcb 736 292 0 286 7 5 2 4 0 8 1 arp 128 18 0 9 1 0 1 1 0 8 0 inpcb 328 1401 0 1390 19 12 7 10 0 8 5 nd6 144 24 0 12 1 0 1 1 0 8 0 pkpcb 40 10 0 10 3 2 1 1 0 8 1 kcovpl 48 10 0 2 1 0 1 1 0 8 0 ppxss 1192 197 0 197 3 2 1 1 0 8 1 pppxif 1504 10 0 10 2 2 0 1 0 8 0 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pffrag 232 24 0 19 1 0 1 1 0 482 0 pffrnode 88 24 0 19 1 0 1 1 0 8 0 pffrent 40 44 0 39 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 pfstitem 24 91 0 47 1 0 1 1 0 8 0 pfstkey 128 93 0 49 2 0 2 2 0 8 0 pfstate 384 92 0 48 6 0 6 6 0 8 0 pfrule 1344 27 0 22 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 669 0 320 33 7 26 31 0 8 2 art_table 40 672 0 320 5 0 5 5 0 8 0 art_node 32 151 0 90 1 0 1 1 0 8 0 sysvmsgpl 40 78 0 73 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 48 0 38 1 0 1 1 0 8 0 shmpl 112 40 0 0 2 0 2 2 0 8 0 dirhash 1024 27 0 10 3 0 3 3 0 8 0 dino2pl 256 3627 0 2116 95 0 95 95 0 8 0 ffsino 296 3627 0 2116 117 0 117 117 0 8 0 nchpl 144 5233 0 3532 64 0 64 64 0 8 0 rtmask 32 14 0 14 3 2 1 1 0 8 1 uvmvnodes 80 4429 0 0 91 0 91 91 0 8 0 vnodes 216 4429 0 0 247 0 247 247 0 8 0 namei 1024 18847 0 18847 3 2 1 2 0 8 1 percpumem 16 262 0 214 1 0 1 1 0 8 0 kstatmem 264 130 0 104 5 2 3 3 0 8 1 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 4 0 4 2 1 1 1 0 8 1 scxspl 216 29962 0 29962 11 10 1 8 1 8 1 plimitpl 152 327 0 307 1 0 1 1 0 8 0 sigapl 424 1468 0 1412 9 2 7 9 0 8 0 knotepl 120 583 0 0 17 0 17 17 0 8 0 kqueuepl 224 614 0 603 14 13 1 5 0 8 0 pipepl 344 268 0 241 3 0 3 3 0 8 0 fdescpl 528 1422 0 1390 3 0 3 3 0 8 0 filepl 160 10262 0 10038 27 13 14 20 0 8 1 lockfpl 104 686 0 683 4 1 3 3 0 8 2 lockfspl 48 263 0 260 2 0 2 2 0 8 1 sessionpl 144 29 0 20 1 0 1 1 0 8 0 pgrppl 48 47 0 30 1 0 1 1 0 8 0 ucredpl 104 1708 0 1695 1 0 1 1 0 8 0 zombiepl 144 1777 0 1774 2 1 1 1 0 8 0 processpl 1248 1468 0 1412 6 0 6 6 0 8 0 procpl 664 3165 0 3101 9 2 7 8 0 8 0 sosppl 168 3 0 3 2 2 0 1 0 8 0 sockpl 752 2548 0 2517 41 30 11 23 0 8 7 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 122 0 0 16 0 16 16 0 8 0 mcl2k 2048 30 0 0 4 0 4 4 0 8 0 mtagpl 96 17 0 0 1 0 1 1 0 8 0 mbufpl 256 271 0 0 16 0 16 16 0 8 0 bufpl 280 11885 0 5742 441 1 440 440 0 8 0 anonpl 32 14975 0 0 121 0 121 121 0 246 0 amapchunkpl 152 40675 0 40099 41 12 29 29 0 158 5 amappl16 200 5966 0 5289 73 37 36 36 0 8 0 amappl15 192 11 0 10 1 0 1 1 0 8 0 amappl14 184 120 0 108 1 0 1 1 0 8 0 amappl13 176 6 0 6 1 1 0 1 0 8 0 amappl12 168 2104 0 2072 4 1 3 3 0 8 0 amappl11 160 54 0 40 1 0 1 1 0 8 0 amappl10 152 14 0 14 1 1 0 1 0 8 0 amappl9 144 257 0 256 1 0 1 1 0 8 0 amappl8 136 24 0 22 1 0 1 1 0 8 0 amappl7 128 117 0 105 1 0 1 1 0 8 0 amappl6 120 196 0 193 1 0 1 1 0 8 0 amappl5 112 142 0 132 1 0 1 1 0 8 0 amappl4 104 315 0 295 1 0 1 1 0 8 0 amappl3 96 8070 0 7953 5 1 4 4 0 8 0 amappl2 88 694 0 630 2 0 2 2 0 8 0 amappl1 80 13099 0 12491 16 1 15 15 0 8 0 amappl 88 11226 0 11054 5 0 5 5 0 92 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 2 0 1 1 0 1 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 255 0 255 3 2 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 18 0 17 1 0 1 1 0 8 0 aobjpl 72 42 0 0 1 0 1 1 0 8 0 uaddrrnd 24 1422 0 1390 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1422 0 1390 1 0 1 1 0 8 0 vmmpekpl 168 12945 0 12896 3 0 3 3 0 8 0 vmmpepl 168 96478 0 93780 135 17 118 118 0 357 0 vmsppl 488 1421 0 1390 7 2 5 5 0 8 0 rwobjpl 80 32394 0 26332 124 0 124 124 0 8 0 pdppl 4096 2851 0 2780 109 38 71 87 0 8 0 pvpl 32 23059 0 0 187 1 186 186 0 265 0 pmappl 256 1421 0 1390 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 301 0 57 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace copyout() at copyout+0x57 syscall(ffff800038c15e20) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800038c15e20) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x471957678d0, count: -3 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299edff0) 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(ffff8000299edff0) at sched_idle+0x391 sys/kern/kern_sched.c:191 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff8000299edff0) 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(ffff8000299edff0) at sched_idle+0x391 sys/kern/kern_sched.c:191 end trace frame: 0x0, count: -5