uvm_fault(0xfffffd806bdcdd40, 0x13c0, 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 * 71518 22767 0 0 0x4000000 0 syz-executor 293218 23409 0 0x2 0x1 1 syz-executor copyout() at copyout+0x57 syscall(ffff8000333d9230) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000333d9230) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x12c56d19b80, 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(0xfffffd806bdcdd40, 0x13c0, 0, 2) -> e ddb{0}> trace copyout() at copyout+0x57 syscall(ffff8000333d9230) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000333d9230) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x12c56d19b80, count: -3 ddb{0}> show registers rdi 0x13c0 __ALIGN_SIZE+0x3c0 rsi 0xffff8000333d9060 rbp 0xffff8000333d9150 rbx 0xffffff5f rdx 0xffff8000333d4000 rcx 0x4 rax 0x20 r8 0x7f7fffffc000 r9 0 r10 0x4d0078336f82f582 r11 0xffffffff81a79760 copy_fault r12 0x1 r13 0x16 r14 0xffff8000333d9230 r15 0xffff8000333d9060 rip 0xffffffff81a79687 copyout+0x57 cs 0x8 rflags 0x50202 acpi_pdirpa+0x3c073 rsp 0xffff8000333d8e90 ss 0x10 copyout+0x57: repe movsq (%rsi),%es:(%rdi) ddb{0}> show proc PROC (syz-executor) tid=71518 pid=22767 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffff22a0,0xffffffff839ccec0 process=0xffff80003c41c970 user=0xffff8000333d4000, vmspace=0xfffffd806bdcdd40 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 22767 145939 23409 0 2 0 syz-executor *22767 71518 23409 0 7 0x4000000 syz-executor 46524 411790 59317 0 3 0x80 nanoslp syz-executor 46524 209624 59317 0 3 0x4000080 netcon syz-executor 55242 77696 35815 0 3 0x80 nanoslp syz-executor 55242 112691 35815 0 3 0x4000080 fsleep syz-executor 55242 68070 35815 0 3 0x4000080 fsleep syz-executor 60183 181509 0 0 3 0x14200 bored sosplice 68217 118934 62796 0 3 0x100082 sbwait arp 62796 40063 24889 0 3 0x10008a sigsusp sh 24889 253267 17075 0 3 0x82 wait syz-executor 59317 280058 17075 0 3 0x82 nanoslp syz-executor 34083 270500 17075 0 2 0x2 syz-executor 66363 366779 17075 0 2 0x2 syz-executor 61654 207818 17075 0 3 0x82 nanoslp syz-executor 60278 233881 17075 0 3 0x82 nanoslp syz-executor 35815 330884 17075 0 2 0x2 syz-executor 23409 293218 17075 0 7 0x3 syz-executor 17075 371383 58811 0 3 0x82 kqread syz-executor 58811 152139 14823 0 3 0x10008a sigsusp ksh 14823 223898 76826 0 3 0x98 kqread sshd-session 76826 260166 97769 0 3 0x92 kqread sshd-session 4420 14414 1 0 3 0x100083 ttyin getty 97769 313162 1 0 3 0x88 kqread sshd 22164 103764 1586 74 3 0x1100092 bpf pflogd 1586 390474 1 0 3 0x80 sbwait pflogd 59940 518228 1325 73 3 0x1100090 kqread syslogd 1325 479100 1 0 3 0x100082 sbwait syslogd 83296 369915 1 0 3 0x100080 kqread resolvd 82625 452599 54843 77 3 0x100092 kqread dhcpleased 65223 176267 54843 77 3 0x100092 kqread dhcpleased 54843 284704 1 0 3 0x80 kqread dhcpleased 16519 324922 0 0 3 0x14200 bored smr 51634 393564 0 0 3 0x14200 pgzero zerothread 61204 342764 0 0 3 0x14200 aiodoned aiodoned 25900 45029 0 0 3 0x14200 syncer update 983 421431 0 0 3 0x14200 cleaner cleaner 73545 236551 0 0 3 0x14200 reaper reaper 67509 490488 0 0 3 0x14200 pgdaemon pagedaemon 25534 125621 0 0 3 0x14200 bored viomb 73182 169001 0 0 3 0x40014200 acpi0 acpi0 589 288876 0 0 3 0x40014200 idle1 21060 8689 0 0 3 0x14200 bored softnet3 44855 516460 0 0 3 0x14200 bored softnet2 70799 241190 0 0 3 0x14200 bored softnet1 9689 306920 0 0 3 0x14200 bored softnet0 40696 6481 0 0 3 0x14200 bored systqmp 36991 290399 0 0 3 0x14200 bored systq 42889 133494 0 0 3 0x14200 tmoslp softclockmp 42115 296790 0 0 2 0x40014200 softclock 59890 113600 0 0 3 0x40014200 idle0 1 505020 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 34083 (syz-executor) thread 0xffff8000ffffc7b8 (270500) exclusive rrwlock inode r = 0 (0xfffffd806de37d18) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2bd sys/kern/vfs_subr.c:693 #6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1201 #8 ufs_lookup+0x19f8 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #11 namei+0x7aa sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1864 #13 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806c7c2798) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1864 #8 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 Process 66363 (syz-executor) thread 0xffff80002a2b5208 (366779) exclusive rrwlock inode r = 0 (0xfffffd8068b76e20) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 ufs_ihashins+0x4f ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline] #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:159 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1230 #6 ffs_inode_alloc+0x283 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0x113 sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x102 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3109 #10 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806c7c2438) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3094 #8 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10200 11044K 11281K 166960K 11545 0 pcb 18 12K 12K 166960K 66 0 rtable 226 9K 9K 166960K 386 0 pf 35 17K 81K 166960K 75 0 ifaddr 39 6K 7K 166960K 57 0 ifgroup 55 2K 2K 166960K 86 0 sysctl 3 1K 2K 166960K 4 0 counters 64 36K 37K 166960K 100 0 ioctlops 0 0K 4K 166960K 1518 0 iov 0 0K 20K 166960K 20 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1405 88K 89K 166960K 1691 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 5 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 19 0 dirhash 12 2K 2K 166960K 27 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 97K 166960K 445 0 sigio 0 0K 0K 166960K 8 0 proc 72 91K 152K 166960K 545 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 39 0 in_multi 79 5K 6K 166960K 98 0 ether_multi 1 0K 0K 166960K 2 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 473 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 234 169K 180K 166960K 5811 0 UVM aobj 4 2K 2K 166960K 6 0 pinsyscall 43 86K 110K 166960K 1526 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 0K 166960K 25 0 NDP 12 0K 1K 166960K 36 0 temp 53 8682K 8753K 166960K 17441 0 kqueue 15 21K 30K 166960K 84 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 56 0 51 1 0 1 1 0 8 0 rtentry 176 117 0 16 5 0 5 5 0 8 0 unpcb 144 476 0 459 6 0 6 6 0 8 5 syncache 336 3 0 3 1 1 0 1 0 8 0 tcpcb 808 83 0 78 1 0 1 1 0 8 0 arp 128 19 0 2 1 0 1 1 0 8 0 inpcb 384 376 0 365 9 0 9 9 0 8 7 nd6 144 26 0 3 1 0 1 1 0 8 0 pkpcb 40 6 0 6 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 0 1 1 0 8 1 ppxss 1192 14 0 14 1 0 1 1 0 8 1 pppxif 1504 2 0 2 1 0 1 1 0 8 1 pfstscr 40 1 0 0 1 0 1 1 0 8 0 pffrag 232 3 0 0 1 0 1 1 0 482 0 pffrnode 88 3 0 0 1 0 1 1 0 8 0 pffrent 40 5 0 2 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 39 0 0 1 0 1 1 0 8 0 pfstkey 128 39 0 0 2 0 2 2 0 8 0 pfstate 384 38 0 0 4 0 4 4 0 8 0 pfrule 1344 22 0 17 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 447 0 58 27 0 27 27 0 8 1 art_table 32 449 0 58 4 0 4 4 0 8 0 art_node 16 116 0 23 1 0 1 1 0 8 0 sysvmsgpl 40 9 0 4 1 0 1 1 0 8 0 semapl 112 17 0 7 1 0 1 1 0 8 0 shmpl 112 3 0 2 1 0 1 1 0 8 0 dirhash 1024 27 0 10 3 0 3 3 0 8 0 dino2pl 256 2149 0 643 96 0 96 96 0 8 1 ffsino 288 2149 0 643 109 0 109 109 0 8 0 nchpl 144 2789 0 1104 63 0 63 63 0 8 0 rtmask 32 4 0 4 1 0 1 1 0 8 1 uvmvnodes 80 2463 0 0 51 0 51 51 0 8 0 vnodes 216 2463 0 0 137 0 137 137 0 8 0 namei 1024 9310 0 9309 1 0 1 1 0 8 0 percpumem 16 65 0 18 1 0 1 1 0 8 0 kstatmem 264 44 0 20 3 0 3 3 0 8 1 scxspl 216 8872 0 8872 4 1 3 3 1 8 3 plimitpl 152 130 0 111 1 0 1 1 0 8 0 sigapl 424 747 0 697 7 0 7 7 0 8 0 futexpl 64 5027 0 5025 1 0 1 1 0 8 0 knotepl 120 310 0 0 10 0 10 10 0 8 0 kqueuepl 224 164 0 152 3 0 3 3 0 8 2 pipepl 336 124 0 97 3 0 3 3 0 8 0 fdescpl 520 728 0 697 3 0 3 3 0 8 0 filepl 160 4043 0 3820 17 0 17 17 0 8 6 lockfpl 104 109 0 107 1 0 1 1 0 8 0 lockfspl 48 44 0 42 1 0 1 1 0 8 0 sessionpl 144 22 0 13 1 0 1 1 0 8 0 pgrppl 48 34 0 17 1 0 1 1 0 8 0 ucredpl 104 376 0 361 1 0 1 1 0 8 0 zombiepl 144 699 0 697 1 0 1 1 0 8 0 processpl 1192 747 0 697 5 0 5 5 0 8 0 procpl 656 1303 0 1249 6 0 6 6 0 8 0 sosppl 168 1 0 1 1 0 1 1 0 8 1 sockpl 728 919 0 886 16 4 12 16 0 8 8 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 113 0 0 15 0 15 15 0 8 0 mcl2k 2048 24 0 0 3 0 3 3 0 8 0 mtagpl 96 5 0 0 1 0 1 1 0 8 0 mbufpl 256 220 0 0 14 0 14 14 0 8 0 bufpl 280 3013 0 128 207 0 207 207 0 8 0 anonpl 32 7607 0 0 62 0 62 62 0 246 0 amapchunkpl 152 18231 0 17783 29 0 29 29 0 158 8 amappl16 200 2529 0 2502 6 0 6 6 0 8 3 amappl15 192 7 0 7 1 1 0 1 0 8 0 amappl14 184 116 0 103 1 0 1 1 0 8 0 amappl13 176 5 0 4 1 0 1 1 0 8 0 amappl12 168 1365 0 1333 4 1 3 3 0 8 0 amappl11 160 82 0 67 1 0 1 1 0 8 0 amappl10 152 9 0 8 1 0 1 1 0 8 0 amappl9 144 246 0 246 1 1 0 1 0 8 0 amappl8 136 27 0 24 1 0 1 1 0 8 0 amappl7 128 140 0 127 1 0 1 1 0 8 0 amappl6 120 177 0 173 1 0 1 1 0 8 0 amappl5 112 120 0 111 1 0 1 1 0 8 0 amappl4 104 311 0 290 1 0 1 1 0 8 0 amappl3 96 3398 0 3294 5 1 4 4 0 8 0 amappl2 88 625 0 561 2 0 2 2 0 8 0 amappl1 80 9375 0 8750 16 0 16 16 0 8 0 amappl 88 5085 0 4930 5 0 5 5 0 92 0 dma4096 4096 2 0 2 2 1 1 1 0 8 1 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 7 0 7 2 1 1 1 0 8 1 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 5 0 2 1 0 1 1 0 8 0 uaddrrnd 24 728 0 697 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 728 0 697 1 0 1 1 0 8 0 vmmpekpl 168 7486 0 7445 3 0 3 3 0 8 1 vmmpepl 168 51889 0 49940 93 0 93 93 0 357 3 vmsppl 480 727 0 697 5 0 5 5 0 8 0 rwobjpl 72 18590 0 15162 63 0 63 63 0 8 0 pdppl 4096 1464 0 1394 104 30 74 88 0 8 4 pvpl 32 15675 0 0 127 0 127 127 0 265 0 pmappl 256 727 0 697 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 390 0 33 11 0 11 11 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace copyout() at copyout+0x57 syscall(ffff8000333d9230) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000333d9230) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x12c56d19b80, count: -3 ddb{0}> machine ddbcpu 1