uvm_fault(0xfffffd806bed0018, 0x583da0, 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 *519274 83026 0 0 0x4000000 0 syz-executor 114489 43622 0 0x14000 0x200 1 softclockmp copyout() at copyout+0x57 syscall(ffff80003b827890) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003b827890) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1b46574eb20, 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(0xfffffd806bed0018, 0x583da0, 0, 2) -> e ddb{0}> trace copyout() at copyout+0x57 syscall(ffff80003b827890) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003b827890) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1b46574eb20, count: -3 ddb{0}> show registers rdi 0x583da0 acpi_pdirpa+0x56fc11 rsi 0xffff80003b8276a0 rbp 0xffff80003b8277b0 rbx 0xfffd3e11 rdx 0xffff80003b822000 rcx 0x4 rax 0x20 r8 0x7f7fffffc000 r9 0 r10 0x1126a370de1107e6 r11 0xffffffff831c0f90 copy_fault r12 0x2 r13 0x16 r14 0xffff80003b827890 r15 0xffff80003b8276a0 rip 0xffffffff831c0eb7 copyout+0x57 cs 0x8 rflags 0x50202 acpi_pdirpa+0x3c073 rsp 0xffff80003b8274f0 ss 0x10 copyout+0x57: repe movsq (%rsi),%es:(%rdi) ddb{0}> show proc PROC (syz-executor) tid=519274 pid=83026 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=80, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a290020,0xffff80002a290550 process=0xffff80003b82aa08 user=0xffff80003b822000, vmspace=0xfffffd806bed0018 estcpu=30, cpticks=52, pctcpu=0.0, user=0, sys=50, intr=2 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 38368 67280 68112 0 2 0 syz-executor 38368 396308 68112 0 3 0x4000080 fsleep syz-executor 71444 340487 9410 0 2 0 syz-executor 71444 203834 9410 0 3 0x4000080 fsleep syz-executor 71444 469689 9410 0 2 0x4000000 syz-executor 1544 254890 56268 0 2 0x480 syz-executor 1544 17649 56268 0 3 0x4000080 fsleep syz-executor 1544 521174 56268 0 3 0x4000080 kqsel syz-executor 1544 287155 56268 0 3 0x4000080 fsleep syz-executor 83026 250934 31306 0 2 0 syz-executor *83026 519274 31306 0 7 0x4000000 syz-executor 54958 149766 60531 0 2 0x490 syz-executor 54958 446985 60531 0 3 0x4000090 semwait syz-executor 54958 432838 60531 0 3 0x4000090 fsleep syz-executor 79696 340857 86513 0 2 0 syz-executor 79696 235279 86513 0 3 0x4000080 fsleep syz-executor 19798 292909 99076 0 2 0x480 syz-executor 19798 322388 99076 0 3 0x4000080 kqsel syz-executor 19798 186378 99076 0 3 0x4000080 kqsel syz-executor 19798 164487 99076 0 3 0x4000080 fsleep syz-executor 82754 357728 0 0 3 0x14200 bored sosplice 99076 115501 21796 0 2 0x2 syz-executor 31306 289071 21796 0 3 0x82 nanoslp syz-executor 60531 254372 21796 0 3 0x82 nanoslp syz-executor 86513 193125 21796 0 3 0x82 nanoslp syz-executor 9410 322152 21796 0 2 0x482 syz-executor 56268 88929 21796 0 2 0x482 syz-executor 33650 383420 21796 0 2 0x2 syz-executor 68112 359595 21796 0 3 0x82 nanoslp syz-executor 21796 402064 25254 0 3 0x82 kqread syz-executor 25254 226626 65816 0 3 0x10008a sigsusp ksh 65816 24333 83896 0 3 0x98 kqread sshd-session 83896 212662 68368 0 3 0x92 kqread sshd-session 32669 320014 1 0 3 0x100083 ttyin getty 68368 120266 1 0 3 0x88 kqread sshd 34402 284869 41294 74 3 0x1100092 bpf pflogd 41294 291625 1 0 3 0x80 sbwait pflogd 19649 519379 78546 73 3 0x1100090 kqread syslogd 78546 472246 1 0 3 0x100082 sbwait syslogd 85061 188162 1 0 3 0x100080 kqread resolvd 74285 485855 65824 77 3 0x100092 kqread dhcpleased 65921 110754 65824 77 3 0x100092 kqread dhcpleased 65824 395646 1 0 3 0x80 kqread dhcpleased 61151 384726 0 0 2 0x40014200 smr 2762 448052 0 0 2 0x14200 zerothread 3448 373057 0 0 3 0x14200 aiodoned aiodoned 80269 308472 0 0 3 0x14200 syncer update 16727 102538 0 0 3 0x14200 cleaner cleaner 21556 256662 0 0 3 0x14200 reaper reaper 27871 428712 0 0 3 0x14200 pgdaemon pagedaemon 80501 406268 0 0 3 0x14200 bored viomb 78995 125573 0 0 3 0x40014200 acpi0 acpi0 75888 98087 0 0 3 0x40014200 idle1 34801 258234 0 0 3 0x14200 bored softnet3 1321 102875 0 0 3 0x14200 bored softnet2 28769 12554 0 0 3 0x14200 bored softnet1 85679 348678 0 0 3 0x14200 bored softnet0 41179 262929 0 0 3 0x14200 bored systqmp 62889 352064 0 0 3 0x14200 bored systq 43622 114489 0 0 7 0x14200 softclockmp 31328 111084 0 0 2 0x40014200 softclock 23047 425559 0 0 3 0x40014200 idle0 1 319460 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 33650 (syz-executor) thread 0xffff80002a2c7208 (383420) exclusive rrwlock inode r = 0 (0xfffffd806bb821c0) #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:694 #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:1866 #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 (0xfffffd806cd069d0) #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:1866 #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 43622 (softclockmp) thread 0xffff8000ffffea40 (114489) shared rwlock timeout r = 0 (0xffffffff837b1198) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 timeout_run+0xf1 sys/kern/kern_timeout.c:658 #2 softclock_thread_mp+0xf3 sys/kern/kern_timeout.c:834 #3 proc_trampoline+0x10 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10212 11201K 11364K 166960K 11377 0 pcb 18 12K 12K 166960K 40 0 rtable 242 7K 7K 166960K 363 0 pf 34 17K 18K 166960K 47 0 ifaddr 43 7K 7K 166960K 46 0 ifgroup 55 2K 2K 166960K 57 0 sysctl 1 1K 1K 166960K 1 0 counters 64 36K 36K 166960K 70 0 ioctlops 0 0K 4K 166960K 1490 0 iov 0 0K 12K 166960K 4 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1344 85K 85K 166960K 1417 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 5 0K 0K 166960K 5 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 89K 166960K 206 0 sigio 1 0K 0K 166960K 2 0 proc 71 91K 127K 166960K 535 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 9 0 in_multi 99 7K 7K 166960K 103 0 ether_multi 1 0K 0K 166960K 3 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 61 281K 281K 166960K 61 0 exec 0 0K 1K 166960K 383 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 243 152K 163K 166960K 3662 0 UVM aobj 7 2K 2K 166960K 7 0 pinsyscall 42 84K 103K 166960K 1317 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 12 0K 1K 166960K 29 0 temp 39 8674K 8738K 166960K 6706 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 39 0 36 1 0 1 1 0 8 0 rtentry 176 113 0 1 6 0 6 6 0 8 0 unpcb 144 73 0 54 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 808 18 0 14 1 0 1 1 0 8 0 arp 128 19 0 0 1 0 1 1 0 8 0 inpcb 384 122 0 111 2 0 2 2 0 8 0 nd6 144 25 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 3 0 3 1 0 1 1 0 8 1 pffrag 232 1 0 0 1 0 1 1 0 482 0 pffrnode 88 1 0 0 1 0 1 1 0 8 0 pffrent 40 1 0 0 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 21 0 0 1 0 1 1 0 8 0 pfstkey 128 21 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 256 464 0 0 29 0 29 29 0 8 0 art_table 32 465 0 0 4 0 4 4 0 8 0 art_node 16 112 0 10 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 0 1 0 1 1 0 8 0 semapl 112 3 0 0 1 0 1 1 0 8 0 shmpl 112 4 0 0 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 1680 0 169 95 0 95 95 0 8 0 ffsino 288 1680 0 169 109 0 109 109 0 8 0 nchpl 144 1959 0 266 63 0 63 63 0 8 0 rtmask 32 1 0 1 1 0 1 1 0 8 1 uvmvnodes 80 1794 0 0 37 0 37 37 0 8 0 vnodes 216 1794 0 0 100 0 100 100 0 8 0 namei 1024 6096 0 6096 2 0 2 2 0 8 2 percpumem 16 50 0 3 1 0 1 1 0 8 0 kstatmem 264 26 0 2 2 0 2 2 0 8 0 scsiplug 72 1 0 1 1 0 1 1 0 8 1 scxspl 216 6664 0 6664 10 2 8 8 1 8 8 plimitpl 152 32 0 15 1 0 1 1 0 8 0 sigapl 424 515 0 465 7 0 7 7 0 8 1 futexpl 64 1090 0 1083 1 0 1 1 0 8 0 knotepl 120 316 0 0 10 0 10 10 0 8 0 kqueuepl 224 50 0 36 1 0 1 1 0 8 0 pipepl 336 114 0 87 3 0 3 3 0 8 0 fdescpl 520 496 0 465 3 0 3 3 0 8 0 filepl 160 1851 0 1628 10 0 10 10 0 8 0 lockfpl 104 21 0 19 1 0 1 1 0 8 0 lockfspl 48 11 0 9 1 0 1 1 0 8 0 sessionpl 144 22 0 13 1 0 1 1 0 8 0 pgrppl 48 32 0 15 1 0 1 1 0 8 0 ucredpl 104 151 0 137 1 0 1 1 0 8 0 zombiepl 144 465 0 465 1 0 1 1 0 8 1 processpl 1192 515 0 465 5 0 5 5 0 8 0 procpl 656 658 0 595 6 0 6 6 0 8 0 sosppl 168 2 0 2 1 0 1 1 0 8 1 sockpl 728 237 0 204 4 0 4 4 0 8 0 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 114 0 0 15 0 15 15 0 8 0 mcl2k 2048 21 0 0 3 0 3 3 0 8 0 mtagpl 96 8 0 0 1 0 1 1 0 8 0 mbufpl 256 176 0 0 11 0 11 11 0 8 0 bufpl 280 2446 0 123 166 0 166 166 0 8 0 anonpl 32 5991 0 0 49 0 49 49 0 246 0 amapchunkpl 152 10558 0 10054 27 0 27 27 0 158 5 amappl16 200 2251 0 2066 11 1 10 10 0 8 0 amappl15 192 9 0 9 1 1 0 1 0 8 0 amappl14 184 114 0 102 1 0 1 1 0 8 0 amappl13 176 20 0 20 1 1 0 1 0 8 0 amappl12 168 1151 0 1120 4 1 3 3 0 8 1 amappl11 160 59 0 45 1 0 1 1 0 8 0 amappl10 152 4 0 4 2 2 0 1 0 8 0 amappl9 144 243 0 243 1 1 0 1 0 8 0 amappl8 136 28 0 25 1 0 1 1 0 8 0 amappl7 128 126 0 113 1 0 1 1 0 8 0 amappl6 120 180 0 177 1 0 1 1 0 8 0 amappl5 112 127 0 117 1 0 1 1 0 8 0 amappl4 104 336 0 318 1 0 1 1 0 8 0 amappl3 96 1742 0 1628 4 0 4 4 0 8 1 amappl2 88 643 0 581 2 0 2 2 0 8 0 amappl1 80 8478 0 7878 14 0 14 14 0 8 1 amappl 88 2961 0 2789 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 6 0 0 1 0 1 1 0 8 0 uaddrrnd 24 496 0 465 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 496 0 465 1 0 1 1 0 8 0 vmmpekpl 168 5768 0 5733 2 0 2 2 0 8 0 vmmpepl 168 38405 0 36280 93 0 93 93 0 357 0 vmsppl 480 495 0 465 5 0 5 5 0 8 1 rwobjpl 72 15348 0 12461 53 0 53 53 0 8 0 pdppl 4096 1000 0 930 104 30 74 84 0 8 4 pvpl 32 14284 0 0 116 0 116 116 0 265 0 pmappl 256 495 0 465 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 386 0 32 11 0 11 11 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace copyout() at copyout+0x57 syscall(ffff80003b827890) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003b827890) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1b46574eb20, count: -3 ddb{0}> machine ddbcpu 1