login: uvm_fault(0xfffffd806bebc5b8, 0x13060, 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 *243589 98280 0 0 0x4000000 0 syz-executor 379337 38266 0 0x14000 0x200 1 softnet0 copyout() at copyout+0x57 syscall(ffff80003c4cd750) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4cd750) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe98a2645660, 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(0xfffffd806bebc5b8, 0x13060, 0, 2) -> e ddb{0}> trace copyout() at copyout+0x57 syscall(ffff80003c4cd750) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4cd750) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe98a2645660, count: -3 ddb{0}> show registers rdi 0x13060 mp_pdirpa+0x205a rsi 0xffff80003c4cd540 rbp 0xffff80003c4cd670 rbx 0xfffff67b rdx 0xffff80003c4c8000 rcx 0x4 rax 0x20 r8 0x7f7fffffc000 r9 0 r10 0x76b0b96e1925d25b r11 0xffffffff81e2c580 copy_fault r12 0x3 r13 0x16 r14 0xffff80003c4cd750 r15 0xffff80003c4cd540 rip 0xffffffff81e2c4a7 copyout+0x57 cs 0x8 rflags 0x50202 acpi_pdirpa+0x3c073 rsp 0xffff80003c4cd3b0 ss 0x10 copyout+0x57: repe movsq (%rsi),%es:(%rdi) ddb{0}> show proc PROC (syz-executor) tid=243589 pid=98280 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=50, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c45ea78,0xffffffff8397b330 process=0xffff80003c457360 user=0xffff80003c4c8000, vmspace=0xfffffd806bebc5b8 estcpu=36, cpticks=3, pctcpu=0.0, user=0, sys=3, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 98280 172182 6257 0 2 0 syz-executor *98280 243589 6257 0 7 0x4000000 syz-executor 16349 378318 51999 0 2 0 syz-executor 8325 121503 90741 0 2 0 syz-executor 8325 438414 90741 0 3 0x4000080 fsleep syz-executor 8325 73414 90741 0 2 0x4000000 syz-executor 12677 252667 92053 0 2 0 syz-executor 12677 399788 92053 0 3 0x4000080 fsleep syz-executor 12187 343859 25388 0 2 0x10 syz-executor 12187 355571 25388 0 3 0x4000090 fsleep syz-executor 12187 128109 25388 0 3 0x4000090 fsleep syz-executor 49016 524157 60682 0 2 0 syz-executor 49016 443792 60682 0 3 0x4000080 fsleep syz-executor 49016 101419 60682 0 3 0x4000080 fsleep syz-executor 83792 34224 1 0 3 0x100083 ttyin getty 64559 99368 0 0 3 0x14280 nfsidl nfsio 87928 461786 0 0 3 0x14280 nfsidl nfsio 89947 367019 0 0 3 0x14280 nfsidl nfsio 2597 244002 0 0 3 0x14280 nfsidl nfsio 47707 490450 0 0 3 0x14280 nfsidl nfsio 87268 405345 0 0 3 0x14280 nfsidl nfsio 64258 38325 0 0 3 0x14280 nfsidl nfsio 44607 349972 0 0 3 0x14280 nfsidl nfsio 8615 228612 0 0 3 0x14280 nfsidl nfsio 97438 444745 0 0 3 0x14280 nfsidl nfsio 80679 513670 0 0 3 0x14280 nfsidl nfsio 84571 7381 0 0 3 0x14280 nfsidl nfsio 19845 65331 0 0 3 0x14280 nfsidl nfsio 93099 59154 0 0 3 0x14280 nfsidl nfsio 63389 210745 0 0 3 0x14280 nfsidl nfsio 13429 303280 0 0 3 0x14280 nfsidl nfsio 54938 518834 0 0 3 0x14280 nfsidl nfsio 13567 303370 0 0 3 0x14280 nfsidl nfsio 78185 187611 0 0 3 0x14280 nfsidl nfsio 32770 42119 0 0 3 0x14280 nfsidl nfsio 67689 377964 0 0 3 0x14200 bored sosplice 90741 231523 75386 0 2 0x2 syz-executor 51999 306571 75386 0 2 0x482 syz-executor 25388 79105 75386 0 2 0x2 syz-executor 44498 216006 75386 0 2 0x482 syz-executor 46420 241641 75386 0 3 0x82 wait syz-executor 92053 438744 75386 0 3 0x82 nanoslp syz-executor 6257 94989 75386 0 2 0x482 syz-executor 60682 312436 75386 0 3 0x82 nanoslp syz-executor 75386 120363 87156 0 3 0x82 kqread syz-executor 87156 410424 84621 0 3 0x10008a sigsusp ksh 84621 23452 52275 0 3 0x98 kqread sshd-session 52275 224577 58544 0 3 0x92 kqread sshd-session 58544 115270 1 0 3 0x88 kqread sshd 78696 180856 87852 74 3 0x1100092 bpf pflogd 87852 491707 1 0 3 0x80 sbwait pflogd 28187 350343 62127 73 3 0x1100090 kqread syslogd 62127 503336 1 0 3 0x100082 sbwait syslogd 58220 390268 1 0 3 0x100080 kqread resolvd 73276 136637 43420 77 3 0x100092 kqread dhcpleased 10866 176287 43420 77 3 0x100092 kqread dhcpleased 43420 105747 1 0 3 0x80 kqread dhcpleased 83938 393815 0 0 3 0x14200 bored smr 60681 79808 0 0 2 0x14200 zerothread 71661 80208 0 0 3 0x14200 aiodoned aiodoned 22817 356596 0 0 3 0x14200 syncer update 63319 438358 0 0 3 0x14200 cleaner cleaner 35260 117017 0 0 2 0x14200 reaper 27473 419799 0 0 3 0x14200 pgdaemon pagedaemon 92115 313453 0 0 3 0x14200 bored viomb 55994 312792 0 0 3 0x40014200 acpi0 acpi0 31929 456826 0 0 3 0x40014200 idle1 8953 55362 0 0 3 0x14200 bored softnet3 41769 24724 0 0 3 0x14200 bored softnet2 34553 100951 0 0 3 0x14200 bored softnet1 38266 379337 0 0 7 0x14200 softnet0 53911 81121 0 0 3 0x14200 bored systqmp 85548 181136 0 0 3 0x14200 bored systq 10539 118672 0 0 3 0x14200 tmoslp softclockmp 30146 245287 0 0 2 0x40014200 softclock 77852 150371 0 0 3 0x40014200 idle0 1 94365 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks CPU 1: exclusive mutex softnet0 r = 0 (0xffff80000002c028) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x178 sys/kern/kern_lock.c:-1 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 msleep+0x183 sys/kern/kern_synch.c:250 #4 taskq_next_work+0x8e sys/kern/kern_task.c:399 #5 taskq_thread+0x1d5 sys/kern/kern_task.c:439 #6 proc_trampoline+0x10 Process 8325 (syz-executor) thread 0xffff80003c45e7e8 (73414) exclusive rwlock vmmaplk r = 0 (0xfffffd8009eda2e0) #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 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5250 #3 uvmfault_lookup+0xe8 sys/uvm/uvm_fault.c:1854 #4 uvm_fault_check+0x987 uvmfault_amapcopy sys/uvm/uvm_fault.c:235 [inline] #4 uvm_fault_check+0x987 sys/uvm/uvm_fault.c:772 #5 uvm_fault+0x106 sys/uvm/uvm_fault.c:666 #6 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #7 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #8 recall_trap+0x8 Process 35260 (reaper) thread 0xffff8000ffffcf68 (117017) exclusive rwlock kmmaplk r = 0 (0xffffffff8397ffa0) #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 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5250 #3 uvm_unmap+0x81 sys/uvm/uvm_map.c:1792 #4 km_free+0x87 sys/uvm/uvm_km.c:831 #5 uvm_uarea_free+0x4f sys/uvm/uvm_glue.c:285 #6 reaper+0x1fe sys/kern/kern_exit.c:467 #7 proc_trampoline+0x10 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10236 11070K 11768K 166960K 12165 0 pcb 18 13K 13K 166960K 97 0 rtable 344 11K 11K 166960K 760 0 pf 36 18K 21K 166960K 100 0 ifaddr 43 7K 8K 166960K 71 0 ifgroup 55 2K 2K 166960K 114 0 sysctl 3 1K 1K 166960K 5 0 counters 64 36K 37K 166960K 118 0 ioctlops 0 0K 4K 166960K 1622 0 iov 0 0K 12K 166960K 32 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1427 90K 90K 166960K 1811 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 10K 14K 166960K 16 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 24 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 93K 166960K 612 0 sigio 0 0K 0K 166960K 6 0 proc 72 91K 116K 166960K 591 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 69 0 in_multi 98 7K 7K 166960K 127 0 ether_multi 1 0K 0K 166960K 6 0 mrt 2 0K 0K 166960K 6 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 223 996K 996K 166960K 223 0 exec 0 0K 1K 166960K 475 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 242 160K 170K 166960K 7546 0 UVM aobj 24 4K 4K 166960K 27 0 pinsyscall 42 84K 104K 166960K 1742 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 25 0 NDP 12 0K 2K 166960K 43 0 temp 80 8692K 8760K 166960K 25808 0 kqueue 14 22K 36K 166960K 102 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 120 194 0 191 3 2 1 3 0 8 0 rtentry 176 195 0 35 8 0 8 8 0 8 0 unpcb 144 565 0 542 5 3 2 5 0 8 1 syncache 336 4 0 4 1 1 0 1 0 8 0 tcpcb 808 350 0 346 14 7 7 8 0 8 6 arp 128 84 0 1 3 0 3 3 0 8 0 inpcb 384 821 0 813 23 14 9 14 0 8 8 nd6 144 27 0 3 1 0 1 1 0 8 0 pkpcb 40 5 0 5 2 1 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 16 0 16 1 0 1 1 0 8 1 pppxif 1504 6 0 6 1 0 1 1 0 8 1 pffrag 232 4 0 2 1 0 1 1 0 482 0 pffrnode 88 4 0 2 1 0 1 1 0 8 0 pffrent 40 7 0 5 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 1 0 0 1 0 1 1 0 8 0 pftag 88 2 0 1 2 1 1 1 0 8 0 pfstitem 24 52 0 1 1 0 1 1 0 8 0 pfstkey 128 52 0 1 2 0 2 2 0 8 0 pfstate 384 52 0 1 6 0 6 6 0 8 0 pfrule 1344 26 0 19 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 580 0 150 31 2 29 30 0 8 1 art_table 32 582 0 150 4 0 4 4 0 8 0 art_node 16 192 0 106 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 1 1 1 0 1 0 8 0 semapl 112 20 0 10 1 0 1 1 0 8 0 shmpl 112 24 0 3 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 2424 0 916 95 0 95 95 0 8 0 ffsino 288 2424 0 916 109 0 109 109 0 8 0 nchpl 144 3320 0 1629 64 0 64 64 0 8 0 rtmask 32 5 0 5 2 1 1 1 0 8 1 uvmvnodes 80 2807 0 0 58 0 58 58 0 8 0 vnodes 216 2807 0 0 156 0 156 156 0 8 0 namei 1024 11315 0 11314 2 1 1 1 0 8 0 percpumem 16 74 0 27 1 0 1 1 0 8 0 kstatmem 264 54 0 30 2 0 2 2 0 8 0 scsiplug 72 1 0 1 1 0 1 1 0 8 1 scxspl 216 10287 0 10287 6 5 1 4 1 8 1 plimitpl 152 136 0 117 1 0 1 1 0 8 0 sigapl 424 947 0 876 9 0 9 9 0 8 0 futexpl 64 7524 0 7518 1 0 1 1 0 8 0 knotepl 120 532 0 0 16 0 16 16 0 8 0 kqueuepl 224 304 0 293 9 4 5 5 0 8 4 pipepl 336 178 0 151 6 0 6 6 0 8 3 fdescpl 520 907 0 876 3 0 3 3 0 8 0 filepl 160 5876 0 5649 25 8 17 18 0 8 6 lockfpl 104 228 0 225 1 0 1 1 0 8 0 lockfspl 48 71 0 68 1 0 1 1 0 8 0 sessionpl 144 24 0 15 1 0 1 1 0 8 0 pgrppl 48 34 0 17 1 0 1 1 0 8 0 ucredpl 104 703 0 687 1 0 1 1 0 8 0 zombiepl 144 956 0 954 1 0 1 1 0 8 0 processpl 1192 947 0 876 6 0 6 6 0 8 0 procpl 656 1782 0 1700 8 0 8 8 0 8 0 sosppl 168 5 0 5 2 1 1 1 0 8 1 sockpl 728 1592 0 1558 33 22 11 21 0 8 7 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 126 0 0 16 0 16 16 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 23 0 0 3 0 3 3 0 8 0 mtagpl 96 87 0 0 3 0 3 3 0 8 0 mbufpl 256 7553 0 0 473 0 473 473 0 8 0 bufpl 280 3366 0 133 231 0 231 231 0 8 0 anonpl 32 7528 0 0 61 0 61 61 0 246 0 amapchunkpl 152 23671 0 23183 36 10 26 31 0 158 4 amappl16 200 2829 0 2794 20 10 10 15 0 8 8 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 118 0 106 1 0 1 1 0 8 0 amappl13 176 4 0 4 1 1 0 1 0 8 0 amappl12 168 1567 0 1536 3 1 2 2 0 8 0 amappl11 160 56 0 41 1 0 1 1 0 8 0 amappl10 152 9 0 9 1 1 0 1 0 8 0 amappl9 144 253 0 252 1 0 1 1 0 8 0 amappl8 136 23 0 21 1 0 1 1 0 8 0 amappl7 128 109 0 97 1 0 1 1 0 8 0 amappl6 120 181 0 177 1 0 1 1 0 8 0 amappl5 112 126 0 117 1 0 1 1 0 8 0 amappl4 104 333 0 313 1 0 1 1 0 8 0 amappl3 96 4540 0 4427 5 1 4 4 0 8 0 amappl2 88 661 0 594 2 0 2 2 0 8 0 amappl1 80 10512 0 9903 15 0 15 15 0 8 0 amappl 88 6737 0 6570 5 0 5 5 0 92 0 dma4096 4096 2 0 2 2 2 0 1 0 8 0 dma1024 1024 4 0 3 1 0 1 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 254 0 254 2 1 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 26 0 3 1 0 1 1 0 8 0 uaddrrnd 24 907 0 875 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 907 0 875 1 0 1 1 0 8 0 vmmpekpl 168 9091 0 9055 3 0 3 3 0 8 0 vmmpepl 168 62798 0 60739 103 4 99 99 0 357 4 vmsppl 480 906 0 875 5 1 4 5 0 8 0 rwobjpl 72 21513 0 17739 72 0 72 72 0 8 0 pdppl 4096 1821 0 1750 105 34 71 85 0 8 0 pvpl 32 13421 0 0 109 0 109 109 0 265 0 pmappl 256 906 0 875 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 870 0 48 24 0 24 24 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace copyout() at copyout+0x57 syscall(ffff80003c4cd750) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4cd750) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe98a2645660, count: -3 ddb{0}> machine ddbcpu 1