uvm_fault(0xffffffff83504770, 0xffff800013cc3300, 0, 2) -> d kernel: page fault trap, code=2 Stopped at memcpy+0x19: repe movsq (%rsi),%es:(%rdi) TID PID UID PRFLAGS PFLAGS CPU COMMAND 319626 85591 0 0x2 0 1 syz-executor *125799 27221 73 0x1100010 0 0 syslogd memcpy() at memcpy+0x19 VOP_FSYNC(fffffd806e285638,fffffd807f7d3a90,1,ffff8000ffffd960) at VOP_FSYNC+0x108 sys/kern/vfs_vops.c:311 sys_fsync(ffff8000ffffd960,ffff80002a06ae00,ffff80002a06ad50) at sys_fsync+0x16f sys/kern/vfs_syscalls.c:2926 syscall(ffff80002a06ae00) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a06ae00) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x74b18ba25560, count: 10 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(0xffffffff83504770, 0xffff800013cc3300, 0, 2) -> d ddb{0}> trace memcpy() at memcpy+0x19 VOP_FSYNC(fffffd806e285638,fffffd807f7d3a90,1,ffff8000ffffd960) at VOP_FSYNC+0x108 sys/kern/vfs_vops.c:311 sys_fsync(ffff8000ffffd960,ffff80002a06ae00,ffff80002a06ad50) at sys_fsync+0x16f sys/kern/vfs_syscalls.c:2926 syscall(ffff80002a06ae00) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a06ae00) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x74b18ba25560, count: -5 ddb{0}> show registers rdi 0xffff800013cc3300 rsi 0xfffffd806e711900 rbp 0xffff80002a06ac40 rbx 0x1 rdx 0x100 rcx 0x20 rax 0x4c1 r8 0xffffffffffffffff r9 0x4bf00 acpi_pdirpa+0x37d71 r10 0xa2bc39261a341993 r11 0xffff800013cc3300 r12 0xfffffd806e4ca448 r13 0xfffffd806ea487b8 r14 0x1 r15 0xffff800000a5f000 rip 0xffffffff81a73349 memcpy+0x19 cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff80002a06abd8 ss 0x10 memcpy+0x19: repe movsq (%rsi),%es:(%rdi) ddb{0}> show proc PROC (syslogd) tid=125799 pid=27221 tcnt=1 stat=onproc flags process=1100010 proc=0 runpri=17, usrpri=51, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffffd6d8,0xffff8000ffffd460 process=0xffff8000ffff9b40 user=0xffff80002a065000, vmspace=0xfffffd806ecba8a0 estcpu=1, cpticks=5, pctcpu=4.42, user=4, sys=1041, intr=359 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 57571 436822 85591 0 2 0 syz-executor 57571 169161 85591 0 2 0x4000000 syz-executor 57571 2700 85591 0 3 0x4000080 fsleep syz-executor 57571 412184 85591 0 3 0x4000080 fsleep syz-executor 83723 254286 20474 60929 2 0x10 syz-executor 83723 504448 20474 60929 2 0x4000010 syz-executor 83723 325948 20474 60929 3 0x4000090 fsleep syz-executor 83723 157951 20474 60929 3 0x4000090 fsleep syz-executor 46801 375788 70494 0 2 0 syz-executor 46801 443596 70494 0 3 0x4000080 fsleep syz-executor 3020 173880 24117 0 2 0 syz-executor 3020 485834 24117 0 3 0x4000080 fsleep syz-executor 3020 129308 24117 0 2 0x4000000 syz-executor 76967 209845 24089 0 2 0 syz-executor 76967 142642 24089 0 3 0x4000080 ttyin syz-executor 5997 499060 64318 0 2 0 syz-executor 5997 44583 64318 0 3 0x4000080 fsleep syz-executor 5997 48599 64318 0 2 0x4000000 syz-executor 78014 457793 8287 0 2 0 syz-executor 78014 122497 8287 0 3 0x4000080 pipewr syz-executor 75118 293455 76621 0 3 0x82 piperd syz-executor 20474 475269 76621 0 2 0x482 syz-executor 8287 22192 76621 0 2 0x482 syz-executor 85591 319626 76621 0 7 0x2 syz-executor 24089 107945 76621 0 2 0x482 syz-executor 24117 187884 76621 0 2 0x482 syz-executor 70494 511272 76621 0 2 0x482 syz-executor 64318 89618 76621 0 2 0x2 syz-executor 78173 145702 1 0 3 0x100083 ttyin getty 45366 8825 0 0 3 0x14280 nfsidl nfsio 93412 312033 0 0 3 0x14280 nfsidl nfsio 41703 367943 0 0 3 0x14280 nfsidl nfsio 27746 463276 0 0 3 0x14280 nfsidl nfsio 90636 161722 0 0 3 0x14280 nfsidl nfsio 25021 249169 0 0 3 0x14280 nfsidl nfsio 45834 156049 0 0 3 0x14280 nfsidl nfsio 84556 383046 0 0 3 0x14280 nfsidl nfsio 62020 90087 0 0 3 0x14280 nfsidl nfsio 53548 456971 0 0 3 0x14280 nfsidl nfsio 79055 428251 0 0 3 0x14280 nfsidl nfsio 60499 154520 0 0 3 0x14280 nfsidl nfsio 91576 298705 0 0 3 0x14280 nfsidl nfsio 10711 391024 0 0 3 0x14280 nfsidl nfsio 14610 264974 0 0 3 0x14280 nfsidl nfsio 15409 423743 0 0 3 0x14280 nfsidl nfsio 29441 125500 0 0 3 0x14280 nfsidl nfsio 49442 324697 0 0 3 0x14280 nfsidl nfsio 95762 291659 0 0 3 0x14280 nfsidl nfsio 6701 407915 0 0 3 0x14280 nfsidl nfsio 19129 317265 0 0 3 0x14200 acct acct 45993 185057 0 0 3 0x14200 bored sosplice 76621 75546 21197 0 2 0x2 syz-executor 21197 282976 29103 0 3 0x10008a sigsusp ksh 29103 14936 54216 0 3 0x98 kqread sshd-session 54216 202262 66386 0 3 0x92 kqread sshd-session 66386 386567 1 0 3 0x88 kqread sshd 65137 328558 66094 74 3 0x1100092 bpf pflogd 66094 407802 1 0 3 0x80 sbwait pflogd *27221 125799 30046 73 7 0x1100010 syslogd 30046 259980 1 0 3 0x100082 sbwait syslogd 22147 151396 1 0 3 0x100080 kqread resolvd 58507 262811 47257 77 3 0x100092 kqread dhcpleased 2469 110347 47257 77 3 0x100092 kqread dhcpleased 47257 36350 1 0 3 0x80 kqread dhcpleased 29089 277023 0 0 3 0x14200 bored smr 21754 311159 0 0 2 0x14200 zerothread 53810 428446 0 0 3 0x14200 aiodoned aiodoned 13090 283428 0 0 3 0x14200 syncer update 8418 202282 0 0 3 0x14200 cleaner cleaner 29133 44207 0 0 3 0x14200 reaper reaper 80860 16652 0 0 3 0x14200 pgdaemon pagedaemon 65345 338947 0 0 3 0x14200 bored viomb 79795 243387 0 0 3 0x40014200 acpi0 acpi0 92815 41323 0 0 3 0x40014200 idle1 71840 453556 0 0 3 0x14200 bored softnet3 72923 39966 0 0 3 0x14200 bored softnet2 86418 264350 0 0 3 0x14200 bored softnet1 47535 388956 0 0 3 0x14200 bored softnet0 65719 273682 0 0 3 0x14200 bored systqmp 13796 295632 0 0 3 0x14200 bored systq 77522 198816 0 0 3 0x14200 tmoslp softclockmp 79401 228731 0 0 3 0x40014200 tmoslp softclock 97156 468941 0 0 3 0x40014200 idle0 1 369509 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 27221 (syslogd) thread 0xffff8000ffffd960 (125799) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83553178) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 __mp_acquire_count+0x58 #2 mi_switch+0x658 sys/kern/sched_bsd.c:460 #3 sleep_finish+0x219 sys/kern/kern_synch.c:416 #4 vwaitforio+0xd2 #5 ffs_fsync+0x376 sys/ufs/ffs/ffs_vnops.c:482 #6 VOP_FSYNC+0x108 sys/kern/vfs_vops.c:311 #7 sys_fsync+0x16f sys/kern/vfs_syscalls.c:2926 #8 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #8 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806e4ca4e0) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 sys_fsync+0x152 sys/kern/vfs_syscalls.c:2926 #6 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #6 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10200 10101K 10500K 166960K 11943 0 pcb 17 12K 12K 166960K 116 0 rtable 210 6K 8K 166960K 1539 0 pf 36 18K 26K 166960K 158 0 ifaddr 41 7K 8K 166960K 185 0 ifgroup 55 2K 2K 166960K 213 0 sysctl 2 0K 0K 166960K 2 0 counters 64 36K 36K 166960K 144 0 ioctlops 0 0K 4K 166960K 1548 0 iov 0 0K 16K 166960K 100 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1442 91K 91K 166960K 2195 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 12 0 VM map 2 1K 1K 166960K 2 0 sem 11 0K 0K 166960K 12 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1690 195K 286K 166960K 12418 0 file desc 17 61K 93K 166960K 1020 0 sigio 0 0K 0K 166960K 9 0 proc 72 91K 140K 166960K 1437 0 subproc 104 6K 7K 166960K 520 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 183 0 in_multi 92 7K 7K 166960K 458 0 ether_multi 1 0K 0K 166960K 1 0 mrt 1 0K 0K 166960K 2 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 851 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 243 73K 98K 166960K 9321 0 UVM aobj 81 3K 3K 166960K 82 0 pinsyscall 42 84K 104K 166960K 2909 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 0K 166960K 43 0 NDP 13 0K 2K 166960K 132 0 temp 50 6817K 6883K 166960K 30051 0 kqueue 13 20K 28K 166960K 95 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 24 0 0 1 0 1 1 0 8 0 rtpcb 120 158 0 155 2 1 1 2 0 8 0 rtentry 112 566 0 470 4 1 3 4 0 8 0 unpcb 144 394 0 374 5 3 2 4 0 8 1 syncache 336 7 0 7 5 5 0 1 0 8 0 tcpqe 32 2 0 2 1 1 0 1 0 8 0 tcpcb 808 126 0 118 3 2 1 2 0 8 0 arp 120 115 0 97 1 0 1 1 0 8 0 inpcb 336 937 0 923 13 11 2 7 0 8 0 nd6 136 120 0 98 1 0 1 1 0 8 0 kcovpl 48 40 0 32 1 0 1 1 0 8 0 ppxss 1168 3 0 3 3 3 0 1 0 8 0 pfstscr 40 1 0 1 1 1 0 1 0 8 0 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 49 0 47 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 3 0 3 1 1 0 1 0 8 0 pfanchor 1288 2 0 1 2 1 1 1 0 8 0 pfstitem 24 78 0 46 1 0 1 1 0 8 0 pfstkey 128 82 0 50 2 0 2 2 0 8 0 pfstate 376 79 0 48 4 0 4 4 0 8 0 pfrule 1344 25 0 18 2 0 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1925 0 1524 31 3 28 30 0 8 1 art_table 32 1926 0 1524 4 0 4 4 0 8 0 art_node 16 565 0 478 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 1 1 1 0 1 0 8 0 semapl 112 9 0 0 1 0 1 1 0 8 0 shmpl 112 79 0 1 3 0 3 3 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2390 0 824 99 0 99 99 0 8 0 ffsino 272 2390 0 824 105 0 105 105 0 8 0 nchpl 144 3202 0 1473 65 0 65 65 0 8 0 uvmvnodes 80 3140 0 0 65 0 65 65 0 8 0 vnodes 216 3140 0 0 175 0 175 175 0 8 0 namei 1024 13563 0 13563 2 1 1 2 0 8 1 percpumem 16 86 0 40 1 0 1 1 0 8 0 pfiaddrpl 120 1 0 1 1 1 0 1 0 8 0 kstatmem 264 104 0 80 2 0 2 2 0 8 0 scxspl 216 21712 0 21712 11 10 1 8 1 8 1 plimitpl 152 189 0 172 1 0 1 1 0 8 0 sigapl 424 1279 0 1208 10 1 9 9 0 8 0 futexpl 64 7029 0 7022 3 2 1 1 0 8 0 knotepl 120 552 0 0 17 0 17 17 0 8 0 kqueuepl 216 196 0 186 5 4 1 5 0 8 0 pipepl 320 282 0 254 6 3 3 6 0 8 0 fdescpl 496 1239 0 1208 7 2 5 5 0 8 0 filepl 152 6048 0 5789 27 14 13 15 0 8 2 lockfpl 104 148 0 145 1 0 1 1 0 8 0 lockfspl 48 66 0 63 1 0 1 1 0 8 0 sessionpl 144 56 0 47 1 0 1 1 0 8 0 pgrppl 48 97 0 80 1 0 1 1 0 8 0 ucredpl 104 762 0 748 1 0 1 1 0 8 0 zombiepl 144 1208 0 1208 1 0 1 1 0 8 1 processpl 1160 1279 0 1208 7 1 6 6 0 8 0 procpl 648 2025 0 1941 9 1 8 8 0 8 0 srpgc 96 4 0 4 1 1 0 1 0 8 0 sosppl 168 2 0 2 1 1 0 1 0 8 0 sockpl 664 1498 0 1461 18 14 4 10 0 8 0 mcl64k 65536 2 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 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 219 0 0 28 0 28 28 0 8 0 mtagpl 96 13 0 0 1 0 1 1 0 8 0 mbufpl 256 2154 0 0 132 0 132 132 0 8 0 bufpl 280 7147 0 923 445 0 445 445 0 8 0 anonpl 24 256617 0 253142 80 14 66 79 0 185 35 amapchunkpl 152 29961 0 29436 42 10 32 41 0 158 11 amappl16 200 5282 0 5260 17 15 2 14 0 8 0 amappl15 192 7 0 7 1 1 0 1 0 8 0 amappl14 184 184 0 172 1 0 1 1 0 8 0 amappl13 176 33 0 33 1 1 0 1 0 8 0 amappl12 168 2383 0 2352 4 2 2 3 0 8 0 amappl11 160 63 0 49 1 0 1 1 0 8 0 amappl10 152 7 0 6 1 0 1 1 0 8 0 amappl9 144 133 0 133 1 1 0 1 0 8 0 amappl8 136 29 0 26 1 0 1 1 0 8 0 amappl7 128 181 0 169 1 0 1 1 0 8 0 amappl6 120 478 0 477 1 0 1 1 0 8 0 amappl5 112 261 0 250 1 0 1 1 0 8 0 amappl4 104 473 0 452 1 0 1 1 0 8 0 amappl3 96 5662 0 5541 4 0 4 4 0 8 0 amappl2 88 1150 0 1078 2 0 2 2 0 8 0 amappl1 80 12475 0 11914 15 1 14 14 0 8 0 amappl 88 8661 0 8481 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 81 0 1 2 0 2 2 0 8 0 uaddrrnd 24 1239 0 1208 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1239 0 1208 1 0 1 1 0 8 0 vmmpekpl 168 11828 0 11776 4 0 4 4 0 8 0 vmmpepl 168 84507 0 82636 98 13 85 93 0 357 1 vmsppl 440 1238 0 1208 6 2 4 5 0 8 0 rwobjpl 56 30517 0 26358 62 3 59 59 0 8 0 pdppl 4096 2485 0 2416 151 80 71 85 0 8 2 pvpl 32 45002 0 0 364 1 363 363 0 265 0 pmappl 248 1238 0 1208 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 583 0 107 14 0 14 14 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace memcpy() at memcpy+0x19 VOP_FSYNC(fffffd806e285638,fffffd807f7d3a90,1,ffff8000ffffd960) at VOP_FSYNC+0x108 sys/kern/vfs_vops.c:311 sys_fsync(ffff8000ffffd960,ffff80002a06ae00,ffff80002a06ad50) at sys_fsync+0x16f sys/kern/vfs_syscalls.c:2926 syscall(ffff80002a06ae00) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a06ae00) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x74b18ba25560, count: -5 ddb{0}> machine ddbcpu 1