kernel: page fault trap, code=3 Stopped at copyout+0x57: repe movsq (%rsi),%es:(%rdi) TID PID UID PRFLAGS PFLAGS CPU COMMAND *288165 35823 0 0 0x4000000 0 syz-executor copyout() at copyout+0x57 syscall(ffff800033bef080) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800033bef080) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:742 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xcb6dc2a9f40, 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 0x2000000000c0 in supervisor mode ddb{0}> trace copyout() at copyout+0x57 syscall(ffff800033bef080) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800033bef080) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:742 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xcb6dc2a9f40, count: -3 ddb{0}> show registers rdi 0x2000000000c0 rsi 0xffff800033beef48 rbp 0xffff800033beefa0 rbx 0xffff800033bef080 rdx 0xffff800033bea000 rcx 0x2 rax 0x10 r8 0x7f7fffffc000 r9 0 r10 0xee30627d39338e46 r11 0xffffffff825ebe80 copy_fault r12 0 r13 0x1 r14 0xffff8000ffff3720 r15 0xffff800033bef080 rip 0xffffffff825ebda7 copyout+0x57 cs 0x8 rflags 0x50202 acpi_pdirpa+0x3c073 rsp 0xffff800033beef30 ss 0x10 copyout+0x57: repe movsq (%rsi),%es:(%rdi) ddb{0}> show proc PROC (syz-executor) tid=288165 pid=35823 tcnt=2 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=0xffff8000ffff2a50,0xffffffff839b4a40 process=0xffff80003c41e208 user=0xffff800033bea000, vmspace=0xfffffd806c078980 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 35823 246418 20425 0 2 0 syz-executor *35823 288165 20425 0 7 0x4000000 syz-executor 95074 489503 1735 0 3 0x80 fsleep syz-executor 95074 354861 1735 0 3 0x4000080 ttyout syz-executor 798 158202 30446 0 3 0x80 fsleep syz-executor 798 401432 30446 0 3 0x4000080 kqsel syz-executor 39726 454217 57593 0 3 0x80 fsleep syz-executor 39726 148765 57593 0 3 0x4000080 lockf syz-executor 7701 380743 56473 0 3 0x80 fsleep syz-executor 7701 406083 56473 0 2 0x4000000 syz-executor 76959 283122 28532 0 3 0x80 fsleep syz-executor 76959 164113 28532 0 3 0x4000080 pipewr syz-executor 89519 516231 80180 0 3 0x80 fsleep syz-executor 89519 178554 80180 0 3 0x4000080 bell syz-executor 89519 496328 80180 0 3 0x4000080 bell syz-executor 82847 14173 0 0 3 0x14200 acct acct 79773 301648 5386 0 3 0x82 sbwait sshd-session 20425 491783 18733 0 3 0x82 nanoslp syz-executor 80180 321439 18733 0 3 0x82 nanoslp syz-executor 23010 425058 1 0 3 0x100083 ttyin getty 17020 143424 0 0 3 0x14200 bored sosplice 56473 378006 18733 0 3 0x82 nanoslp syz-executor 57593 71757 18733 0 3 0x82 nanoslp syz-executor 1735 180886 18733 0 3 0x82 nanoslp syz-executor 57036 366681 18733 0 3 0x82 wait syz-executor 30446 381574 18733 0 3 0x82 nanoslp syz-executor 28532 491405 18733 0 3 0x82 nanoslp syz-executor 18733 134934 4790 0 3 0x82 kqread syz-executor 4790 198257 12682 0 3 0x10008a sigsusp ksh 12682 383304 35381 0 3 0x98 kqread sshd-session 35381 45339 5386 0 3 0x92 kqread sshd-session 5386 154192 1 0 3 0x88 kqread sshd 31677 438860 11121 74 3 0x1100092 bpf pflogd 11121 269963 1 0 3 0x80 sbwait pflogd 83830 200038 36669 73 3 0x1100090 kqread syslogd 36669 176264 1 0 3 0x100082 sbwait syslogd 70246 29103 1 0 3 0x100080 kqread resolvd 754 278548 44233 77 3 0x100092 kqread dhcpleased 99847 443417 44233 77 3 0x100092 kqread dhcpleased 44233 165590 1 0 3 0x80 kqread dhcpleased 78932 288262 0 0 2 0x14200 smr 43563 218945 0 0 3 0x14200 pgzero zerothread 98832 140047 0 0 3 0x14200 aiodoned aiodoned 43913 297704 0 0 3 0x14200 syncer update 69604 464717 0 0 3 0x14200 cleaner cleaner 85236 247890 0 0 3 0x14200 reaper reaper 77202 412579 0 0 3 0x14200 pgdaemon pagedaemon 57067 118800 0 0 3 0x14200 bored viomb 2873 203817 0 0 3 0x40014200 acpi0 acpi0 48780 88879 0 0 7 0x40014200 idle1 95766 380057 0 0 3 0x14200 bored softnet3 85046 427249 0 0 3 0x14200 bored softnet2 42142 413439 0 0 3 0x14200 bored softnet1 58817 273196 0 0 3 0x14200 bored softnet0 8665 208584 0 0 3 0x14200 bored systqmp 72887 334211 0 0 3 0x14200 bored systq 4558 372370 0 0 3 0x14200 tmoslp softclockmp 43671 391991 0 0 2 0x40014200 softclock 7216 189060 0 0 3 0x40014200 idle0 1 136440 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 7701 (syz-executor) thread 0xffff80002efdecf8 (406083) exclusive rrwlock inode r = 0 (0xfffffd806e9e4770) #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+0x377 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:605 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vn_write+0x190 sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x23c sys/kern/sys_generic.c:380 #7 sys_write+0xa2 sys/kern/sys_generic.c:300 #8 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:742 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10233 11159K 11926K 166960K 14746 0 pcb 17 15K 16K 166960K 292 0 rtable 199 9K 9K 166960K 672 0 pf 42 19K 67486K 166960K 253 0 ifaddr 40 6K 7K 166960K 126 0 ifgroup 63 2K 3K 166960K 221 0 sysctl 4 1K 9K 166960K 13 0 counters 72 37K 38K 166960K 224 0 ioctlops 0 0K 4K 166960K 1803 0 iov 0 0K 16K 166960K 54 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1402 88K 88K 166960K 3044 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 15 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 38 0 dirhash 12 2K 3K 166960K 45 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 110K 166960K 1593 0 sigio 0 0K 0K 166960K 26 0 proc 72 91K 128K 166960K 730 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 1 0K 0K 166960K 299 0 in_multi 75 5K 6K 166960K 167 0 ether_multi 2 0K 0K 166960K 3 0 mrt 1 0K 0K 166960K 9 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 91 413K 413K 166960K 91 0 exec 0 0K 1K 166960K 583 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 260 169K 178K 166960K 15231 0 UVM aobj 19 2K 2K 166960K 20 0 pinsyscall 45 90K 106K 166960K 2773 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 73 0 NDP 14 0K 1K 166960K 81 0 temp 78 8684K 8752K 166960K 76812 0 kqueue 14 22K 30K 166960K 225 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 120 111 0 108 1 0 1 1 0 8 0 rtentry 176 165 0 88 5 0 5 5 0 8 0 unpcb 144 1115 0 1095 11 9 2 6 0 8 1 syncache 336 13 0 13 5 4 1 1 0 8 1 tcpqe 32 8 0 8 3 2 1 1 0 8 1 tcpcb 736 411 0 396 12 10 2 7 0 8 0 arp 128 25 0 9 1 0 1 1 0 8 0 inpcb 328 1535 0 1516 17 10 7 7 0 8 5 nd6 144 31 0 15 1 0 1 1 0 8 0 pkpcb 40 52 0 52 2 1 1 1 0 8 1 kcovpl 48 10 0 2 1 0 1 1 0 8 0 ppxss 1192 51 0 51 1 0 1 1 0 8 1 pppxif 1504 17 0 17 2 1 1 1 0 8 1 pfstscr 40 11 0 9 1 0 1 1 0 8 0 pffrag 232 6 0 2 1 0 1 1 0 482 0 pffrnode 88 6 0 2 1 0 1 1 0 8 0 pffrent 40 14 0 10 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 pfrktable 1344 1 0 1 1 1 0 1 0 8 0 pfanchor 1288 2 0 0 1 0 1 1 0 8 0 pftag 88 3 0 1 1 0 1 1 0 8 0 pfstitem 24 40 0 16 1 0 1 1 0 8 0 pfstkey 128 65 0 43 2 0 2 2 0 8 0 pfstate 384 50 0 29 4 0 4 4 0 8 0 pfrule 1344 114 0 108 5 4 1 4 0 8 0 rttmr 136 3 0 3 2 1 1 1 0 8 1 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 709 0 379 30 8 22 29 0 8 1 art_table 40 712 0 379 5 0 5 5 0 8 0 art_node 32 164 0 95 1 0 1 1 0 8 0 sysvmsgpl 40 13 0 7 1 0 1 1 0 8 0 semapl 112 33 0 23 1 0 1 1 0 8 0 shmpl 112 17 0 1 1 0 1 1 0 8 0 dirhash 1024 39 0 22 3 0 3 3 0 8 0 dino2pl 256 4177 0 2665 95 0 95 95 0 8 0 ffsino 288 4177 0 2665 109 0 109 109 0 8 0 nchpl 144 6357 0 5799 64 39 25 64 0 8 0 rtmask 32 12 0 12 4 3 1 1 0 8 1 uvmvnodes 80 5431 0 0 111 0 111 111 0 8 0 vnodes 216 5431 0 0 302 0 302 302 0 8 0 namei 1024 21831 0 21831 2 1 1 2 0 8 1 percpumem 16 127 0 76 1 0 1 1 0 8 0 kstatmem 264 128 0 94 3 0 3 3 0 8 0 scsiplug 72 4 0 4 1 1 0 1 0 8 0 scxspl 216 55614 0 55614 13 11 2 8 1 8 2 plimitpl 152 371 0 352 1 0 1 1 0 8 0 sigapl 424 1891 0 1838 8 1 7 7 0 8 1 knotepl 120 579 0 0 19 1 18 18 0 8 0 kqueuepl 224 532 0 521 9 4 5 5 0 8 4 pipepl 336 206 0 177 3 0 3 3 0 8 0 fdescpl 520 1869 0 1836 3 0 3 3 0 8 0 filepl 160 11875 0 11641 27 11 16 19 0 8 4 lockfpl 104 1250 0 1246 3 2 1 2 0 8 0 lockfspl 48 469 0 466 1 0 1 1 0 8 0 sessionpl 144 35 0 25 1 0 1 1 0 8 0 pgrppl 48 57 0 39 1 0 1 1 0 8 0 ucredpl 104 1298 0 1285 1 0 1 1 0 8 0 zombiepl 144 1839 0 1838 1 0 1 1 0 8 0 processpl 1240 1891 0 1838 5 0 5 5 0 8 0 procpl 656 3882 0 3821 6 0 6 6 0 8 0 sosppl 168 8 0 7 1 0 1 1 0 8 0 sockpl 728 2853 0 2811 30 20 10 22 0 8 5 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 17 0 0 3 0 3 3 0 8 0 mcl12k 12288 4 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 11 0 0 2 0 2 2 0 8 0 mcl4k 4096 113 0 0 15 0 15 15 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 35 0 0 5 1 4 5 0 8 0 mtagpl 96 91 0 0 3 0 3 3 0 8 0 mbufpl 256 345 0 0 21 0 21 21 0 8 0 bufpl 280 23680 0 17538 439 0 439 439 0 8 0 anonpl 32 16065 0 0 130 0 130 130 0 246 0 amapchunkpl 152 50836 0 50235 39 10 29 31 0 158 4 amappl16 200 8915 0 8528 87 55 32 38 0 8 8 amappl15 192 7 0 7 1 1 0 1 0 8 0 amappl14 184 139 0 126 1 0 1 1 0 8 0 amappl13 176 4 0 4 1 1 0 1 0 8 0 amappl12 168 2556 0 2523 3 1 2 2 0 8 0 amappl11 160 53 0 39 1 0 1 1 0 8 0 amappl10 152 2 0 2 1 1 0 1 0 8 0 amappl9 144 263 0 263 1 1 0 1 0 8 0 amappl8 136 27 0 24 1 0 1 1 0 8 0 amappl7 128 122 0 109 1 0 1 1 0 8 0 amappl6 120 219 0 214 1 0 1 1 0 8 0 amappl5 112 135 0 125 1 0 1 1 0 8 0 amappl4 104 364 0 344 1 0 1 1 0 8 0 amappl3 96 10714 0 10596 5 1 4 4 0 8 0 amappl2 88 749 0 678 2 0 2 2 0 8 0 amappl1 80 16656 0 15961 17 1 16 16 0 8 0 amappl 88 14251 0 14069 5 0 5 5 0 92 0 dma16384 16384 1 0 1 1 1 0 1 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 128 254 0 254 2 2 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 19 0 1 1 0 1 1 0 8 0 uaddrrnd 24 1869 0 1836 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1869 0 1836 1 0 1 1 0 8 0 vmmpekpl 168 15332 0 15280 3 0 3 3 0 8 0 vmmpepl 168 125358 0 122812 132 7 125 125 0 357 11 vmsppl 480 1868 0 1836 5 0 5 5 0 8 0 rwobjpl 72 41134 0 34277 126 0 126 126 0 8 1 pdppl 4096 3745 0 3672 117 42 75 85 0 8 2 pvpl 32 24083 0 0 194 0 194 194 0 265 0 pmappl 256 1868 0 1836 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 435 0 69 11 0 11 11 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace copyout() at copyout+0x57 syscall(ffff800033bef080) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800033bef080) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:742 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xcb6dc2a9f40, count: -3 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299ddff0) 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+0x41e sys/dev/acpi/acpicpu_x86.c:1218 sched_idle(ffff8000299ddff0) at sched_idle+0x4d8 sys/kern/kern_sched.c:191 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff8000299ddff0) 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+0x41e sys/dev/acpi/acpicpu_x86.c:1218 sched_idle(ffff8000299ddff0) at sched_idle+0x4d8 sys/kern/kern_sched.c:191 end trace frame: 0x0, count: -5