kernel: page fault trap, code=3 Stopped at copyout+0x57: repe movsq (%rsi),%es:(%rdi) TID PID UID PRFLAGS PFLAGS CPU COMMAND *404007 59230 0 0 0x4000000 0 syz-executor 501332 72437 0 0x1000 0x4080000 1K syz-executor copyout() at copyout+0x57 syscall(ffff80003c4b5830) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4b5830) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x74524692c60, 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: attempt to access user address 0x200000000260 in supervisor mode ddb{0}> trace copyout() at copyout+0x57 syscall(ffff80003c4b5830) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4b5830) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x74524692c60, count: -3 ddb{0}> show registers rdi 0x200000000260 rsi 0xffff80003c4b5550 rbp 0xffff80003c4b5750 rbx 0x10 rdx 0xffff80003c4b0000 rcx 0x4 rax 0x20 r8 0x7f7fffffc000 r9 0 r10 0x6ff2aea6326302e5 r11 0xffffffff8140cf50 copy_fault r12 0x2 r13 0x16 r14 0xffff80003c4b5550 r15 0xffff80003c4b5830 rip 0xffffffff8140ce77 copyout+0x57 cs 0x8 rflags 0x50202 acpi_pdirpa+0x3c073 rsp 0xffff80003c4b54a0 ss 0x10 copyout+0x57: repe movsq (%rsi),%es:(%rdi) ddb{0}> show proc PROC (syz-executor) tid=404007 pid=59230 tcnt=4 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000314187e8,0xffff8000ffff2020 process=0xffff800035c36b70 user=0xffff80003c4b0000, vmspace=0xfffffd806b617020 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 59230 123635 96068 0 2 0 syz-executor *59230 404007 96068 0 7 0x4000000 syz-executor 59230 498484 96068 0 2 0x4000080 syz-executor 59230 84113 96068 0 3 0x4000080 fsleep syz-executor 3516 325993 17533 0 2 0 syz-executor 3516 96329 17533 0 2 0x4000000 syz-executor 3516 437341 17533 0 3 0x4000000 fltagain2 syz-executor 3516 59342 17533 0 3 0x4000000 pipecl syz-executor 72437 467563 17721 0 3 0x3000 suspend syz-executor 72437 501332 17721 0 7 0x4081000 syz-executor 72437 402067 17721 0 3 0x4081000 fltagain2 syz-executor 39238 334530 0 0 3 0x14200 bored sosplice 45912 474985 89874 0 3 0x80 nanoslp syz-executor 45912 53506 89874 0 3 0x4000080 sbwait syz-executor 45912 109547 89874 0 3 0x4000080 fsleep syz-executor 72828 251006 77120 0 3 0x80 nanoslp syz-executor 72828 269292 77120 0 3 0x4000080 ttyout syz-executor 72828 280393 77120 0 3 0x4000080 fsleep syz-executor 20788 367089 65495 0 3 0x80 nanoslp syz-executor 20788 166563 65495 0 3 0x4000080 dtread syz-executor 19785 468237 29359 0 3 0x80 nanoslp syz-executor 19785 334365 29359 0 3 0x4000080 msgwait syz-executor 19785 357092 29359 0 3 0x4000080 fsleep syz-executor 17721 257979 75358 0 3 0x82 nanoslp syz-executor 96068 496035 75358 0 3 0x82 nanoslp syz-executor 65495 149155 75358 0 3 0x82 nanoslp syz-executor 29359 171897 75358 0 3 0x82 nanoslp syz-executor 17533 233700 75358 0 3 0x82 nanoslp syz-executor 89874 256405 75358 0 3 0x82 nanoslp syz-executor 13880 59640 75358 0 3 0x82 nanoslp syz-executor 77120 398585 75358 0 3 0x82 nanoslp syz-executor 75358 188121 79773 0 3 0x82 kqread syz-executor 79773 518764 2090 0 3 0x10008a sigsusp ksh 2090 224013 10407 0 3 0x98 kqread sshd-session 10407 135859 74243 0 3 0x92 kqread sshd-session 71651 457355 1 0 3 0x100083 ttyin getty 74243 220815 1 0 3 0x88 kqread sshd 82147 86968 29650 74 3 0x1100092 bpf pflogd 29650 425933 1 0 3 0x80 sbwait pflogd 11343 140698 4733 73 3 0x1100090 kqread syslogd 4733 180874 1 0 3 0x100082 sbwait syslogd 2016 97901 1 0 3 0x100080 kqread resolvd 55547 393017 89386 77 3 0x100092 kqread dhcpleased 91374 474797 89386 77 3 0x100092 kqread dhcpleased 89386 238315 1 0 3 0x80 kqread dhcpleased 36115 371224 0 0 3 0x14200 bored smr 65965 274445 0 0 3 0x14200 pgzero zerothread 61969 58094 0 0 3 0x14200 aiodoned aiodoned 69631 159094 0 0 3 0x14200 syncer update 71088 365788 0 0 3 0x14200 cleaner cleaner 85042 169801 0 0 3 0x14200 reaper reaper 90226 41419 0 0 3 0x14200 pgdaemon pagedaemon 91164 132239 0 0 3 0x14200 bored viomb 2798 118397 0 0 3 0x40014200 acpi0 acpi0 20934 388950 0 0 3 0x40014200 idle1 98231 339543 0 0 3 0x14200 bored softnet7 62403 266697 0 0 3 0x14200 bored softnet6 38767 396268 0 0 3 0x14200 bored softnet5 77122 84174 0 0 3 0x14200 bored softnet4 271 58734 0 0 3 0x14200 bored softnet3 27217 117443 0 0 3 0x14200 bored softnet2 62099 179818 0 0 3 0x14200 bored softnet1 71750 412811 0 0 3 0x14200 bored softnet0 82184 3235 0 0 3 0x14200 smrbar systqmp 77365 291439 0 0 3 0x14200 bored systq 45947 234358 0 0 3 0x14200 tmoslp softclockmp 14176 199672 0 0 3 0x40014200 tmoslp softclock 99144 201059 0 0 3 0x40014200 idle0 1 468302 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 3516 (syz-executor) thread 0xffff800031418020 (96329) exclusive rrwlock inode r = 0 (0xfffffd806e38eca8) #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 72437 (syz-executor) thread 0xffff800031419248 (501332) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff838e36d0) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 #2 sleep_finish+0x2d8 sys/kern/kern_synch.c:367 #3 biowait+0xc6 sys/kern/vfs_bio.c:1242 #4 bwrite+0x2e7 sys/kern/vfs_bio.c:754 #5 ffs_write+0x810 sys/ufs/ffs/ffs_vnops.c:377 #6 VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 #7 vn_write+0x1d3 sys/kern/vfs_vnops.c:408 #8 dofilewritev+0x242 sys/kern/sys_generic.c:380 #9 sys_write+0xa2 sys/kern/sys_generic.c:300 #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 exclusive rrwlock inode r = 0 (0xfffffd806b1e4ec0) #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 82184 (systqmp) thread 0xffff8000ffffe7c8 (3235) shared rwlock systqmp r = 0 (0xffffffff837d83e8) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 taskq_thread+0x12a sys/kern/kern_task.c:442 #2 proc_trampoline+0x10 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10213 11082K 11293K 166960K 11449 0 pcb 17 12K 12K 166960K 35 0 rtable 193 6K 7K 166960K 291 0 pf 33 17K 18K 166960K 51 0 ifaddr 39 6K 7K 166960K 48 0 ifgroup 51 2K 2K 166960K 62 0 sysctl 1 1K 9K 166960K 6 0 counters 66 36K 37K 166960K 74 0 ioctlops 0 0K 4K 166960K 1491 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1345 85K 85K 166960K 1424 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 1K 166960K 2 0 VM map 2 1K 1K 166960K 2 0 sem 4 0K 0K 166960K 4 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 89K 166960K 197 0 proc 71 115K 164K 166960K 534 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 4 0 in_multi 88 6K 7K 166960K 100 0 ether_multi 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 382 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 264 168K 177K 166960K 3631 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 43 86K 102K 166960K 1320 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 0K 166960K 7 0 NDP 11 0K 2K 166960K 30 0 temp 38 8638K 8703K 166960K 4862 0 kqueue 13 20K 26K 166960K 37 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 40 0 37 1 0 1 1 0 8 0 rtentry 176 99 0 15 5 0 5 5 0 8 0 unpcb 144 67 0 46 1 0 1 1 0 8 0 syncache 336 4 0 4 2 1 1 1 0 8 1 tcpcb 736 25 0 20 1 0 1 1 0 8 0 arp 128 11 0 2 1 0 1 1 0 8 0 inpcb 328 122 0 113 2 0 2 2 0 8 1 nd6 144 16 0 2 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 2 0 2 1 0 1 1 0 8 1 pppxif 1504 1 0 1 1 0 1 1 0 8 1 pfstscr 40 1 0 0 1 0 1 1 0 8 0 pffrag 232 5 0 2 1 0 1 1 0 482 0 pffrnode 88 3 0 1 1 0 1 1 0 8 0 pffrent 40 7 0 4 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 22 0 0 1 0 1 1 0 8 0 pfstkey 128 22 0 0 1 0 1 1 0 8 0 pfstate 384 21 0 0 3 0 3 3 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 444 0 51 28 0 28 28 0 8 2 art_table 40 445 0 51 5 0 5 5 0 8 0 art_node 32 98 0 21 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 0 1 0 1 1 0 8 0 semapl 112 2 0 0 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 1687 0 173 95 0 95 95 0 8 0 ffsino 296 1687 0 173 117 0 117 117 0 8 0 nchpl 144 1955 0 259 63 0 63 63 0 8 0 uvmvnodes 80 1808 0 0 37 0 37 37 0 8 0 vnodes 216 1808 0 0 101 0 101 101 0 8 0 namei 1024 6043 0 6043 3 2 1 2 0 8 1 percpumem 16 52 0 4 1 0 1 1 0 8 0 kstatmem 264 30 0 6 2 0 2 2 0 8 0 scxspl 216 9649 0 9648 3 2 1 2 1 8 0 plimitpl 152 43 0 22 1 0 1 1 0 8 0 sigapl 424 513 0 458 7 0 7 7 0 8 0 knotepl 120 64 0 0 2 0 2 2 0 8 0 kqueuepl 224 38 0 28 1 0 1 1 0 8 0 pipepl 344 113 0 84 3 0 3 3 0 8 0 fdescpl 528 490 0 458 3 0 3 3 0 8 0 filepl 160 1821 0 1579 11 0 11 11 0 8 0 lockfpl 104 39 0 36 1 0 1 1 0 8 0 lockfspl 48 20 0 17 1 0 1 1 0 8 0 sessionpl 144 23 0 14 1 0 1 1 0 8 0 pgrppl 48 31 0 14 1 0 1 1 0 8 0 ucredpl 104 168 0 155 1 0 1 1 0 8 0 zombiepl 144 460 0 458 1 0 1 1 0 8 0 processpl 1232 513 0 458 5 0 5 5 0 8 0 procpl 664 641 0 571 7 0 7 7 0 8 1 sockpl 752 231 0 198 6 1 5 5 0 8 0 mcl64k 65536 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 1 0 0 1 0 1 1 0 8 0 mcl4k 4096 126 0 0 16 0 16 16 0 8 0 mcl2k 2048 22 0 0 3 0 3 3 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 141 0 0 9 0 9 9 0 8 0 bufpl 280 4403 0 122 306 0 306 306 0 8 0 anonpl 32 7569 0 0 62 0 62 62 0 246 0 amapchunkpl 152 10400 0 9842 30 4 26 26 0 158 2 amappl16 200 2128 0 2018 18 4 14 14 0 8 8 amappl15 192 23 0 23 2 2 0 1 0 8 0 amappl14 184 138 0 126 1 0 1 1 0 8 0 amappl13 176 8 0 8 1 1 0 1 0 8 0 amappl12 168 1152 0 1120 3 1 2 2 0 8 0 amappl11 160 52 0 38 1 0 1 1 0 8 0 amappl10 152 37 0 37 1 1 0 1 0 8 0 amappl9 144 248 0 248 1 1 0 1 0 8 0 amappl8 136 22 0 20 1 0 1 1 0 8 0 amappl7 128 121 0 109 1 0 1 1 0 8 0 amappl6 120 182 0 179 1 0 1 1 0 8 0 amappl5 112 126 0 117 1 0 1 1 0 8 0 amappl4 104 383 0 363 1 0 1 1 0 8 0 amappl3 96 1767 0 1640 4 0 4 4 0 8 0 amappl2 88 658 0 596 2 0 2 2 0 8 0 amappl1 80 8781 0 8176 16 1 15 15 0 8 0 amappl 88 2913 0 2726 5 0 5 5 0 92 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 490 0 458 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 490 0 458 1 0 1 1 0 8 0 vmmpekpl 168 5720 0 5681 2 0 2 2 0 8 0 vmmpepl 168 38539 0 36408 100 1 99 99 0 357 6 vmsppl 488 489 0 458 5 0 5 5 0 8 0 rwobjpl 80 15521 0 12673 61 1 60 60 0 8 1 pdppl 4096 987 0 916 107 34 73 85 0 8 2 pvpl 32 13850 0 0 112 0 112 112 0 265 0 pmappl 256 489 0 458 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 276 0 39 7 0 7 7 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace copyout() at copyout+0x57 syscall(ffff80003c4b5830) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4b5830) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x74524692c60, count: -3 ddb{0}> machine ddbcpu 1