uvm_fault(0xfffffd806b92db58, 0x0, 0, 1) -> e kernel: page fault trap, code=0 Stopped at _copyinstr+0x58: lodsb (%rsi) TID PID UID PRFLAGS PFLAGS CPU COMMAND * 35045 75227 0 0x2000 0x4000000 0K syz-executor _copyinstr() at _copyinstr+0x58 sys_unveil(ffff800034ff99c0,ffff80003c44d760,ffff80003c44d6b0) at sys_unveil+0x152 sys/kern/vfs_syscalls.c:982 syscall(ffff80003c44d760) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c44d760) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb17a6d00180, count: 11 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(0xfffffd806b92db58, 0x0, 0, 1) -> e ddb{0}> trace _copyinstr() at _copyinstr+0x58 sys_unveil(ffff800034ff99c0,ffff80003c44d760,ffff80003c44d6b0) at sys_unveil+0x152 sys/kern/vfs_syscalls.c:982 syscall(ffff80003c44d760) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c44d760) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb17a6d00180, count: -4 ddb{0}> show registers rdi 0xffff80002a277c00 rsi 0 rbp 0xffff80003c44d560 rbx 0xffff80003c44d760 rdx 0x400 rcx 0xffff80003c448000 rax 0x7f7fffffc000 r8 0x400 r9 0xffff80003c44d500 r10 0xa8693e35421dd426 r11 0xffffffff81987440 copystr_fault r12 0xffff80002a277c00 r13 0xffff80003c44d628 r14 0x400 r15 0 rip 0xffffffff81987418 _copyinstr+0x58 cs 0x8 rflags 0x50206 acpi_pdirpa+0x3c077 rsp 0xffff80003c44d4e8 ss 0x10 _copyinstr+0x58: lodsb (%rsi) ddb{0}> show proc PROC (syz-executor) tid=35045 pid=75227 tcnt=4 stat=onproc flags process=2000 proc=4000000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff800034ff99c0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a331758,0xffff800034ff9740 process=0xffff80003c4c0028 user=0xffff80003c448000, vmspace=0xfffffd806b92db58 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 75227 136706 44687 0 4 0x82000 syz-executor 75227 373587 44687 0 4 0x4082000 syz-executor *75227 35045 44687 0 7 0x4002000 syz-executor 75227 190653 44687 0 4 0x4082000 syz-executor 43908 57015 30410 0 2 0 syz-executor 43908 244400 30410 0 2 0x4000000 syz-executor 89259 8596 84371 0 2 0 syz-executor 89259 48984 84371 0 3 0x4000080 fsleep syz-executor 89259 469130 84371 0 2 0x4000000 syz-executor 8574 248152 6619 0 2 0x2 syz-executor 91630 506147 470 0 2 0xc80 syz-executor 91630 50559 470 0 3 0x4000080 fsleep syz-executor 91630 373867 470 0 3 0x4000080 lockf syz-executor 91630 302613 470 0 3 0x4000080 fsleep syz-executor 87160 245753 68578 0 3 0x3000 suspend syz-executor 87160 177466 68578 0 2 0x4081000 syz-executor 87160 266775 68578 0 3 0x4081000 inode syz-executor 470 413717 6619 0 3 0x82 nanoslp syz-executor 49747 257363 6619 0 3 0x82 wait syz-executor 14713 494141 1 0 3 0x100083 ttyopn getty 51937 298335 0 0 3 0x14200 bored sosplice 84371 279209 6619 0 3 0x82 nanoslp syz-executor 97950 70212 6619 0 2 0xc82 syz-executor 30410 74580 6619 0 2 0xc82 syz-executor 44687 253543 6619 0 2 0xc82 syz-executor 68578 859 6619 0 2 0xc82 syz-executor 6619 380954 16109 0 3 0x82 kqread syz-executor 16109 144387 96984 0 3 0x10008a sigsusp ksh 96984 310902 14959 0 3 0x98 kqread sshd-session 14959 329106 64743 0 3 0x92 kqread sshd-session 64743 393939 1 0 3 0x88 kqread sshd 61502 404465 31151 74 3 0x1100092 bpf pflogd 31151 500606 1 0 3 0x80 sbwait pflogd 68427 494883 9189 73 3 0x1100090 kqread syslogd 9189 473578 1 0 3 0x100082 sbwait syslogd 55315 175467 1 0 3 0x100080 kqread resolvd 39987 451469 12135 77 3 0x100092 kqread dhcpleased 90286 2839 12135 77 3 0x100092 kqread dhcpleased 12135 318725 1 0 3 0x80 kqread dhcpleased 37957 494632 0 0 3 0x14200 bored smr 1075 144006 0 0 2 0x14200 zerothread 689 55055 0 0 3 0x14200 aiodoned aiodoned 58080 325420 0 0 3 0x14200 syncer update 4626 264354 0 0 3 0x14200 cleaner cleaner 33303 35632 0 0 3 0x14200 reaper reaper 26859 449591 0 0 3 0x14200 pgdaemon pagedaemon 78547 128354 0 0 3 0x14200 bored viomb 47597 391615 0 0 3 0x40014200 acpi0 acpi0 28386 235436 0 0 7 0x40014200 idle1 7438 415569 0 0 3 0x14200 bored softnet7 67242 49355 0 0 3 0x14200 bored softnet6 716 413530 0 0 3 0x14200 bored softnet5 13952 473895 0 0 3 0x14200 bored softnet4 49507 142785 0 0 3 0x14200 bored softnet3 35402 424538 0 0 3 0x14200 bored softnet2 30390 278911 0 0 3 0x14200 bored softnet1 37128 208690 0 0 3 0x14200 bored softnet0 53696 446298 0 0 3 0x14200 smrbar systqmp 89393 26063 0 0 3 0x14200 bored systq 12692 440762 0 0 3 0x14200 tmoslp softclockmp 50054 173318 0 0 2 0x40014200 softclock 77580 281727 0 0 3 0x40014200 idle0 1 71757 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 75227 (syz-executor) thread 0xffff800034ff99c0 (35045) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff839a4f28) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 #2 sleep_finish+0x2da sys/kern/kern_synch.c:366 #3 msleep_nsec+0x141 sys/kern/kern_synch.c:219 #4 single_thread_set+0x1de sys/kern/kern_sig.c:2336 #5 sys_unveil+0x117 sys/kern/vfs_syscalls.c:981 #6 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 #7 Xsyscall+0x128 Process 87160 (syz-executor) thread 0xffff80002a330568 (177466) exclusive rrwlock inode r = 0 (0xfffffd8062e44520) #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:748 #9 Xsyscall+0x128 Process 87160 (syz-executor) thread 0xffff80002a3307f8 (266775) exclusive rrwlock inode r = 0 (0xfffffd806e97a548) #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 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 uipc_bind+0x2f4 sys/kern/uipc_usrreq.c:371 #8 sys_bind+0x28a sys/kern/uipc_syscalls.c:189 #9 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #9 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:748 #10 Xsyscall+0x128 Process 53696 (systqmp) thread 0xffff8000ffffe520 (446298) shared rwlock systqmp r = 0 (0xffffffff8380c138) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb 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 10249 11058K 11890K 166960K 15446 0 pcb 17 16K 18K 166960K 618 0 rtable 190 18K 19K 166960K 614 0 pf 37 18K 82K 166960K 227 0 ifaddr 31 5K 7K 166960K 136 0 ifgroup 47 2K 2K 166960K 246 0 sysctl 3 1K 9K 166960K 28 0 counters 64 36K 38K 166960K 272 0 ioctlops 0 0K 4K 166960K 1896 0 iov 0 0K 16K 166960K 240 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1489 94K 94K 166960K 4020 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 31 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 117 0 dirhash 12 2K 2K 166960K 57 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 89K 166960K 2152 0 sigio 0 0K 0K 166960K 104 0 proc 75 103K 128K 166960K 865 0 subproc 70 4K 4K 166960K 107 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 295 0 in_multi 62 4K 7K 166960K 181 0 ether_multi 1 0K 0K 166960K 7 0 mrt 0 0K 0K 166960K 7 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 241 1076K 1076K 166960K 241 0 exec 0 0K 1K 166960K 795 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 268 170K 186K 166960K 20666 0 UVM aobj 26 2K 2K 166960K 28 0 pinsyscall 42 84K 101K 166960K 3372 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 173 0 NDP 10 0K 1K 166960K 97 0 temp 81 8684K 8930K 166960K 137857 0 kqueue 13 20K 32K 166960K 402 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 120 428 0 425 7 6 1 3 0 8 0 rtentry 176 164 0 103 5 0 5 5 0 8 1 unpcb 144 1937 0 1918 20 14 6 6 0 8 5 syncache 336 10 0 10 4 3 1 1 0 8 1 tcpqe 32 3 0 3 3 2 1 1 0 8 1 tcpcb 736 845 0 839 21 16 5 7 0 8 4 arp 128 18 0 10 1 0 1 1 0 8 0 inpcb 328 2504 0 2495 22 16 6 8 0 8 4 nd6 144 25 0 15 1 0 1 1 0 8 0 pkpcb 40 81 0 81 5 4 1 1 0 8 1 kcovpl 48 11 0 4 1 0 1 1 0 8 0 ppxss 1192 79 0 79 3 2 1 1 0 8 1 pppxif 1504 11 0 11 3 2 1 1 0 8 1 pfstscr 40 7 0 7 3 3 0 1 0 8 0 pffrag 232 27 0 17 1 0 1 1 0 482 0 pffrnode 88 15 0 8 1 0 1 1 0 8 0 pffrent 40 42 0 32 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 1 0 0 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 117 0 52 1 0 1 1 0 8 0 pfstkey 128 129 0 66 3 0 3 3 0 8 0 pfstate 384 120 0 58 7 0 7 7 0 8 0 pfrule 1344 68 0 62 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 718 0 414 31 6 25 28 0 8 2 art_table 40 722 0 414 5 0 5 5 0 8 0 art_node 32 163 0 113 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 2 1 0 1 1 0 8 0 semupl 112 3 0 3 3 3 0 1 0 8 0 semapl 112 113 0 103 1 0 1 1 0 8 0 shmpl 112 25 0 2 1 0 1 1 0 8 0 dirhash 1024 47 0 30 3 0 3 3 0 8 0 dino2pl 256 5707 0 4195 97 1 96 96 0 8 0 ffsino 288 5707 0 4195 109 0 109 109 0 8 0 nchpl 144 8763 0 7064 64 0 64 64 0 8 0 rtmask 32 17 0 17 3 2 1 1 0 8 1 uvmvnodes 80 7391 0 0 151 0 151 151 0 8 0 vnodes 216 7391 0 0 411 0 411 411 0 8 0 namei 1024 32703 0 32701 3 2 1 2 0 8 0 percpumem 16 151 0 104 1 0 1 1 0 8 0 kstatmem 264 154 0 130 3 0 3 3 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 9 0 9 3 2 1 1 0 8 1 scxspl 216 57909 0 57909 13 11 2 8 1 8 2 plimitpl 152 541 0 523 1 0 1 1 0 8 0 sigapl 424 2487 0 2433 9 1 8 9 0 8 0 knotepl 120 778 0 0 24 0 24 24 0 8 0 kqueuepl 224 1273 0 1263 21 16 5 9 0 8 4 pipepl 336 363 0 336 8 5 3 8 0 8 0 fdescpl 520 2440 0 2409 3 0 3 3 0 8 0 filepl 160 19290 0 19069 36 20 16 21 0 8 4 lockfpl 104 1941 0 1937 5 3 2 3 0 8 1 lockfspl 48 708 0 705 1 0 1 1 0 8 0 sessionpl 144 32 0 23 1 0 1 1 0 8 0 pgrppl 48 79 0 62 1 0 1 1 0 8 0 ucredpl 104 3615 0 3601 1 0 1 1 0 8 0 zombiepl 144 2436 0 2433 2 1 1 1 0 8 0 processpl 1240 2487 0 2433 6 1 5 6 0 8 0 procpl 656 5625 0 5560 10 3 7 9 0 8 0 sosppl 168 7 0 7 3 2 1 1 0 8 1 sockpl 728 5067 0 5036 39 28 11 16 0 8 7 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 123 0 0 16 0 16 16 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 68 0 0 8 0 8 8 0 8 0 mtagpl 96 35 0 0 1 0 1 1 0 8 0 mbufpl 256 1221 0 0 74 0 74 74 0 8 0 bufpl 280 24120 0 17978 440 0 440 440 0 8 0 anonpl 32 20918 0 0 170 1 169 169 0 246 0 amapchunkpl 152 74066 0 73417 52 18 34 34 0 158 8 amappl16 200 8619 0 8100 79 49 30 52 0 8 2 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 135 0 122 1 0 1 1 0 8 0 amappl13 176 3 0 2 1 0 1 1 0 8 0 amappl12 168 3146 0 3115 4 2 2 3 0 8 0 amappl11 160 50 0 36 1 0 1 1 0 8 0 amappl10 152 1 0 1 1 1 0 1 0 8 0 amappl9 144 256 0 256 1 1 0 1 0 8 0 amappl8 136 20 0 17 1 0 1 1 0 8 0 amappl7 128 129 0 116 1 0 1 1 0 8 0 amappl6 120 212 0 208 1 0 1 1 0 8 0 amappl5 112 132 0 121 1 0 1 1 0 8 0 amappl4 104 330 0 309 1 0 1 1 0 8 0 amappl3 96 14742 0 14615 4 0 4 4 0 8 0 amappl2 88 876 0 811 2 0 2 2 0 8 0 amappl1 80 18357 0 17749 15 0 15 15 0 8 0 amappl 88 19441 0 19247 5 0 5 5 0 92 0 dma32768 32768 1 0 1 1 0 1 1 0 8 1 dma4096 4096 3 0 3 3 3 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 7 0 7 2 2 0 1 0 8 0 dma128 128 259 0 259 4 3 1 1 0 8 1 dma64 64 8 0 8 3 3 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 27 0 2 1 0 1 1 0 8 0 uaddrrnd 24 2440 0 2409 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2440 0 2409 1 0 1 1 0 8 0 vmmpekpl 168 19695 0 19642 3 0 3 3 0 8 0 vmmpepl 168 159641 0 157085 148 28 120 131 0 357 5 vmsppl 480 2439 0 2409 6 1 5 5 0 8 0 rwobjpl 72 48697 0 39803 166 4 162 162 0 8 0 pdppl 4096 4888 0 4818 116 44 72 84 0 8 2 pvpl 32 27621 0 0 224 1 223 223 0 265 0 pmappl 256 2439 0 2409 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 507 0 82 13 0 13 13 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace _copyinstr() at _copyinstr+0x58 sys_unveil(ffff800034ff99c0,ffff80003c44d760,ffff80003c44d6b0) at sys_unveil+0x152 sys/kern/vfs_syscalls.c:982 syscall(ffff80003c44d760) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c44d760) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb17a6d00180, count: -4 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