uvm_fault(0xfffffd805ee66208, 0x0, 0, 1) -> e kernel: page fault trap, code=0 Stopped at _copyinstr+0x58: lodsb (%rsi) TID PID UID PRFLAGS PFLAGS CPU COMMAND 364612 535 0 0 0 1 syz-executor *222134 51741 0 0x2000 0x4000000 0K syz-executor _copyinstr() at _copyinstr+0x58 sys_unveil(ffff80002a290540,ffff80002a2a40e0,ffff80002a2a4030) at sys_unveil+0x152 sys/kern/vfs_syscalls.c:982 syscall(ffff80002a2a40e0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a2a40e0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x43296aa6bd0, 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(0xfffffd805ee66208, 0x0, 0, 1) -> e ddb{0}> trace _copyinstr() at _copyinstr+0x58 sys_unveil(ffff80002a290540,ffff80002a2a40e0,ffff80002a2a4030) at sys_unveil+0x152 sys/kern/vfs_syscalls.c:982 syscall(ffff80002a2a40e0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a2a40e0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x43296aa6bd0, count: -4 ddb{0}> show registers rdi 0xffff80002a270800 rsi 0 rbp 0xffff80002a2a3ee0 rbx 0xffff80002a2a40e0 rdx 0x400 rcx 0xffff80002a29f000 rax 0x7f7fffffc000 r8 0x400 r9 0xffff80002a2a3e80 r10 0x3dcb120e9e68bf6b r11 0xffffffff81ffa1d0 copystr_fault r12 0xffff80002a270800 r13 0xffff80002a2a3fa8 r14 0x400 r15 0 rip 0xffffffff81ffa1a8 _copyinstr+0x58 cs 0x8 rflags 0x50206 acpi_pdirpa+0x3c077 rsp 0xffff80002a2a3e68 ss 0x10 _copyinstr+0x58: lodsb (%rsi) ddb{0}> show proc PROC (syz-executor) tid=222134 pid=51741 tcnt=3 stat=onproc flags process=2000 proc=4000000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80002a290540 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800032ff59d8,0xffff80002a2907e0 process=0xffff80003c4297b8 user=0xffff80002a29f000, vmspace=0xfffffd805ee66208 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 16424 493767 58707 0 2 0 syz-executor 535 364612 76930 0 7 0 syz-executor 535 370809 76930 0 2 0x4000000 syz-executor 535 66394 76930 0 2 0x4000000 syz-executor 51741 160570 81440 0 4 0x82000 syz-executor 51741 218376 81440 0 4 0x4082000 syz-executor *51741 222134 81440 0 7 0x4002000 syz-executor 24851 232867 56212 0 2 0 syz-executor 24851 419074 56212 0 3 0x4000080 fsleep syz-executor 8201 300110 58086 0 2 0xc80 syz-executor 8201 98680 58086 0 3 0x4000080 kqpoll syz-executor 8201 385686 58086 0 3 0x4000080 fsleep syz-executor 8201 19480 58086 0 3 0x4000080 fsleep syz-executor 49982 53272 0 0 3 0x14200 acct acct 55736 497587 1 0 3 0x100083 ttyin getty 76930 98388 21475 0 3 0x82 nanoslp syz-executor 58086 407062 21475 0 3 0x82 nanoslp syz-executor 56212 294737 21475 0 2 0xc82 syz-executor 95871 8430 0 0 3 0x14280 nfsidl nfsio 92079 183880 0 0 3 0x14280 nfsidl nfsio 18642 81746 0 0 3 0x14280 nfsidl nfsio 39971 304880 0 0 3 0x14280 nfsidl nfsio 99052 5490 0 0 3 0x14280 nfsidl nfsio 93515 18342 0 0 3 0x14280 nfsidl nfsio 51746 291153 0 0 3 0x14280 nfsidl nfsio 77728 124509 0 0 3 0x14280 nfsidl nfsio 96009 353012 0 0 3 0x14280 nfsidl nfsio 29488 403478 0 0 3 0x14280 nfsidl nfsio 92369 382165 0 0 3 0x14280 nfsidl nfsio 62508 309435 0 0 3 0x14280 nfsidl nfsio 84082 62585 0 0 3 0x14280 nfsidl nfsio 68177 295864 0 0 3 0x14280 nfsidl nfsio 33887 68837 0 0 3 0x14280 nfsidl nfsio 84942 475087 0 0 3 0x14280 nfsidl nfsio 92879 81888 0 0 3 0x14280 nfsidl nfsio 85046 193884 0 0 3 0x14280 nfsidl nfsio 9925 391898 0 0 3 0x14280 nfsidl nfsio 19057 438991 0 0 3 0x14280 nfsidl nfsio 32746 146820 0 0 3 0x14200 bored sosplice 48530 73211 21475 0 2 0x2 syz-executor 94383 124501 21475 0 3 0x82 piperd syz-executor 58707 451681 21475 0 3 0x82 nanoslp syz-executor 81440 128717 21475 0 3 0x82 nanoslp syz-executor 4990 313446 21475 0 3 0x82 piperd syz-executor 21475 211076 93963 0 2 0x2 syz-executor 93963 313113 46705 0 3 0x10008a sigsusp ksh 46705 434719 92054 0 3 0x98 kqread sshd-session 92054 371183 89358 0 3 0x92 kqread sshd-session 89358 259484 1 0 3 0x88 kqread sshd 1251 193842 28265 74 3 0x1100092 bpf pflogd 28265 362948 1 0 3 0x80 sbwait pflogd 56407 494265 54694 73 3 0x1100090 kqread syslogd 54694 284962 1 0 3 0x100082 sbwait syslogd 6390 299061 1 0 3 0x100080 kqread resolvd 9487 459295 50069 77 3 0x100092 kqread dhcpleased 11009 202924 50069 77 3 0x100092 kqread dhcpleased 50069 127414 1 0 3 0x80 kqread dhcpleased 90688 294883 0 0 3 0x14200 bored smr 2412 287897 0 0 2 0x14200 zerothread 57969 117215 0 0 3 0x14200 aiodoned aiodoned 64250 486969 0 0 3 0x14200 syncer update 54566 127210 0 0 3 0x14200 cleaner cleaner 19024 199106 0 0 3 0x14200 reaper reaper 24522 51545 0 0 3 0x14200 pgdaemon pagedaemon 38263 328524 0 0 3 0x14200 bored viomb 73190 42044 0 0 3 0x40014200 acpi0 acpi0 50001 99445 0 0 3 0x40014200 idle1 21407 414819 0 0 3 0x14200 bored softnet3 46011 255775 0 0 3 0x14200 bored softnet2 48562 103499 0 0 3 0x14200 bored softnet1 19448 122559 0 0 3 0x14200 bored softnet0 94340 85646 0 0 3 0x14200 bored systqmp 76069 52001 0 0 3 0x14200 bored systq 40420 159515 0 0 3 0x14200 tmoslp softclockmp 6829 480078 0 0 2 0x40014200 softclock 83363 228232 0 0 3 0x40014200 idle0 1 281673 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 51741 (syz-executor) thread 0xffff80002a290540 (222134) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8396ef30) #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 mi_switch+0x4b7 sys/kern/sched_bsd.c:441 #3 sleep_finish+0x24f sys/kern/kern_synch.c:412 #4 msleep+0x13b sys/kern/kern_synch.c:247 #5 single_thread_set+0x1de sys/kern/kern_sig.c:2336 #6 sys_unveil+0x117 sys/kern/vfs_syscalls.c:981 #7 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #7 syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 #8 Xsyscall+0x128 Process 48530 (syz-executor) thread 0xffff8000ffffccd8 (73211) exclusive rrwlock inode r = 0 (0xfffffd806b003e20) #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:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2bd sys/kern/vfs_subr.c:693 #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:1864 #13 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806b003d00) #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:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2bd sys/kern/vfs_subr.c:693 #6 cache_lookup+0x36e sys/kern/vfs_cache.c:222 #7 ufs_lookup+0x21b sys/ufs/ufs/ufs_lookup.c:160 #8 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #9 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #10 namei+0x7aa sys/kern/vfs_lookup.c:250 #11 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1864 #12 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #12 syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 #13 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10229 11043K 12546K 166960K 14674 0 pcb 19 14K 16K 166960K 376 0 rtable 180 10K 11K 166960K 697 0 pf 37 18K 82K 166960K 158 0 ifaddr 34 5K 8K 166960K 114 0 ifgroup 56 2K 2K 166960K 186 0 sysctl 4 1K 1K 166960K 4 0 counters 62 36K 37K 166960K 206 0 ioctlops 0 0K 4K 166960K 1698 0 iov 0 0K 16K 166960K 180 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1461 92K 92K 166960K 3170 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 5K 13K 166960K 38 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 92 0 dirhash 12 2K 2K 166960K 33 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 15 53K 93K 166960K 1674 0 sigio 0 0K 0K 166960K 24 0 proc 76 103K 128K 166960K 784 0 subproc 72 4K 4K 166960K 99 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 166 0 in_multi 72 5K 7K 166960K 194 0 ether_multi 1 0K 0K 166960K 15 0 mrt 2 0K 0K 166960K 6 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 247 1102K 1102K 166960K 247 0 exec 0 0K 1K 166960K 599 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 231 167K 183K 166960K 17253 0 UVM aobj 48 6K 8K 166960K 56 0 pinsyscall 40 80K 106K 166960K 2865 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 0K 166960K 63 0 NDP 11 0K 2K 166960K 76 0 temp 80 8664K 8776K 166960K 74390 0 kqueue 14 22K 28K 166960K 288 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 120 184 0 181 2 1 1 2 0 8 0 rtentry 176 196 0 123 6 0 6 6 0 8 0 unpcb 144 1130 0 1112 8 7 1 4 0 8 0 syncache 336 5 0 5 1 1 0 1 0 8 0 tcpcb 808 604 0 600 14 7 7 8 0 8 6 arp 128 30 0 18 1 0 1 1 0 8 0 inpcb 384 1836 0 1826 22 14 8 14 0 8 6 nd6 144 39 0 21 1 0 1 1 0 8 0 pkpcb 40 10 0 10 2 2 0 1 0 8 0 kcovpl 48 11 0 3 1 0 1 1 0 8 0 ppxss 1192 55 0 55 1 0 1 1 0 8 1 pppxif 1504 9 0 9 3 3 0 1 0 8 0 pffrag 232 8 0 2 1 0 1 1 0 482 0 pffrnode 88 8 0 2 1 0 1 1 0 8 0 pffrent 40 12 0 6 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 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 129 0 41 1 0 1 1 0 8 0 pfstkey 128 129 0 41 3 0 3 3 0 8 0 pfstate 384 129 0 41 9 0 9 9 0 8 0 pfrule 1344 25 0 19 2 1 1 2 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 738 0 399 29 7 22 29 0 8 0 art_table 32 741 0 399 4 0 4 4 0 8 0 art_node 16 186 0 120 1 0 1 1 0 8 0 sysvmsgpl 40 17 0 9 1 0 1 1 0 8 0 semapl 112 83 0 73 1 0 1 1 0 8 0 shmpl 112 53 0 8 2 0 2 2 0 8 0 dirhash 1024 32 0 15 3 0 3 3 0 8 0 dino2pl 256 4449 0 2945 95 0 95 95 0 8 0 ffsino 288 4449 0 2945 109 0 109 109 0 8 0 nchpl 144 6816 0 6263 64 40 24 64 0 8 0 rtmask 32 13 0 13 2 1 1 1 0 8 1 uvmvnodes 80 5696 0 0 117 0 117 117 0 8 0 vnodes 216 5696 0 0 317 0 317 317 0 8 0 namei 1024 24547 0 24546 2 1 1 2 0 8 0 percpumem 16 118 0 72 1 0 1 1 0 8 0 kstatmem 264 106 0 84 2 0 2 2 0 8 0 scsiplug 72 4 0 4 3 2 1 1 0 8 1 scxspl 216 24733 0 24733 12 11 1 4 1 8 1 plimitpl 152 341 0 324 1 0 1 1 0 8 0 sigapl 424 1999 0 1930 10 1 9 9 0 8 0 knotepl 120 595 0 0 18 0 18 18 0 8 0 kqueuepl 224 698 0 686 9 7 2 5 0 8 1 pipepl 336 310 0 283 8 3 5 8 0 8 2 fdescpl 520 1957 0 1928 3 0 3 3 0 8 0 filepl 160 13551 0 13335 22 7 15 16 0 8 4 lockfpl 104 632 0 630 2 1 1 2 0 8 0 lockfspl 48 202 0 200 1 0 1 1 0 8 0 sessionpl 144 30 0 21 1 0 1 1 0 8 0 pgrppl 48 59 0 42 1 0 1 1 0 8 0 ucredpl 104 2446 0 2433 1 0 1 1 0 8 0 zombiepl 144 1930 0 1930 1 0 1 1 0 8 1 processpl 1208 1999 0 1930 6 0 6 6 0 8 0 procpl 656 4686 0 4609 8 0 8 8 0 8 0 srpgc 96 6 0 6 1 1 0 1 0 8 0 sosppl 168 5 0 5 2 2 0 1 0 8 0 sockpl 728 3181 0 3150 21 12 9 15 0 8 5 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl16k 16384 3 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 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 121 0 0 15 0 15 15 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 47 0 0 5 0 5 5 0 8 0 mtagpl 96 106 0 0 3 0 3 3 0 8 0 mbufpl 256 312 12 0 18 0 18 18 0 8 0 bufpl 280 7894 0 1751 439 0 439 439 0 8 0 anonpl 32 9900 0 0 80 0 80 80 0 246 0 amapchunkpl 152 57438 0 56885 36 4 32 35 0 158 4 amappl16 200 5293 0 5220 29 21 8 15 0 8 0 amappl15 192 12 0 11 2 1 1 1 0 8 0 amappl14 184 145 0 133 1 0 1 1 0 8 0 amappl13 176 5 0 5 1 1 0 1 0 8 0 amappl12 168 2653 0 2624 4 2 2 3 0 8 0 amappl11 160 51 0 37 1 0 1 1 0 8 0 amappl10 152 4 0 4 1 1 0 1 0 8 0 amappl9 144 245 0 244 2 1 1 1 0 8 0 amappl8 136 23 0 20 1 0 1 1 0 8 0 amappl7 128 147 0 135 1 0 1 1 0 8 0 amappl6 120 236 0 232 1 0 1 1 0 8 0 amappl5 112 143 0 133 1 0 1 1 0 8 0 amappl4 104 352 0 331 1 0 1 1 0 8 0 amappl3 96 11640 0 11545 4 0 4 4 0 8 0 amappl2 88 717 0 651 2 0 2 2 0 8 0 amappl1 80 15100 0 14514 15 0 15 15 0 8 0 amappl 88 16195 0 16037 5 0 5 5 0 92 0 dma32768 32768 1 0 1 1 1 0 1 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 4 0 3 1 0 1 1 0 8 0 dma256 256 7 0 7 2 1 1 1 0 8 1 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 55 0 8 1 0 1 1 0 8 0 uaddrrnd 24 1957 0 1928 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1957 0 1928 1 0 1 1 0 8 0 vmmpekpl 168 17439 0 17384 3 0 3 3 0 8 0 vmmpepl 168 126304 0 124377 108 14 94 105 0 357 1 vmsppl 480 1956 0 1928 6 1 5 5 0 8 0 rwobjpl 72 38337 0 31636 123 0 123 123 0 8 0 pdppl 4096 3921 0 3856 111 40 71 85 0 8 6 pvpl 32 17866 0 0 147 2 145 145 0 265 0 pmappl 256 1956 0 1928 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 424 0 62 11 0 11 11 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace _copyinstr() at _copyinstr+0x58 sys_unveil(ffff80002a290540,ffff80002a2a40e0,ffff80002a2a4030) at sys_unveil+0x152 sys/kern/vfs_syscalls.c:982 syscall(ffff80002a2a40e0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a2a40e0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x43296aa6bd0, count: -4 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299edff0) 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 end of kernel end trace frame: 0x71d70baa11a0, count: 12 ddb{1}> trace x86_ipi_db(ffff8000299edff0) 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 end of kernel end trace frame: 0x71d70baa11a0, count: -3