uvm_fault(0xfffffd806754eb60, 0x0, 0, 1) -> e kernel: page fault trap, code=0 Stopped at _copyinstr+0x58: lodsb (%rsi) TID PID UID PRFLAGS PFLAGS CPU COMMAND *505441 98373 0 0x2000 0x4000000 0K syz-executor 198130 65962 0 0x14000 0x200 1 reaper _copyinstr() at _copyinstr+0x58 sys_unveil(ffff80003c408548,ffff80003c461e70,ffff80003c461dc0) at sys_unveil+0x152 sys/kern/vfs_syscalls.c:982 syscall(ffff80003c461e70) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c461e70) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb8e22e5e790, 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(0xfffffd806754eb60, 0x0, 0, 1) -> e ddb{0}> trace _copyinstr() at _copyinstr+0x58 sys_unveil(ffff80003c408548,ffff80003c461e70,ffff80003c461dc0) at sys_unveil+0x152 sys/kern/vfs_syscalls.c:982 syscall(ffff80003c461e70) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c461e70) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb8e22e5e790, count: -4 ddb{0}> show registers rdi 0xffff80002a260400 rsi 0 rbp 0xffff80003c461c70 rbx 0xffff80003c461e70 rdx 0x400 rcx 0xffff80003c45c000 rax 0x7f7fffffc000 r8 0x400 r9 0xffff80003c461c10 r10 0x4fd122c0b7cd12de r11 0xffffffff81913680 copystr_fault r12 0xffff80002a260400 r13 0xffff80003c461d38 r14 0x400 r15 0 rip 0xffffffff81913658 _copyinstr+0x58 cs 0x8 rflags 0x50206 acpi_pdirpa+0x3c077 rsp 0xffff80003c461bf8 ss 0x10 _copyinstr+0x58: lodsb (%rsi) ddb{0}> show proc PROC (syz-executor) tid=505441 pid=98373 tcnt=3 stat=onproc flags process=2000 proc=4000000 runpri=32, usrpri=82, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003c408548 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffff19c0,0xffff80003c4099d8 process=0xffff80003c414990 user=0xffff80003c45c000, vmspace=0xfffffd806754eb60 estcpu=32, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 69410 340542 56599 0 2 0 syz-executor 69410 102019 56599 0 3 0x4000080 fsleep syz-executor 98373 491706 3716 0 4 0x82000 syz-executor 98373 288840 3716 0 4 0x4082000 syz-executor *98373 505441 3716 0 7 0x4002000 syz-executor 92553 418246 0 0 3 0x14200 acct acct 56599 379271 30432 0 2 0xc82 syz-executor 3421 471903 0 0 3 0x14200 bored sosplice 53957 477873 14226 0 3 0x100082 sbwait arp 14226 461153 8981 0 3 0x10008a sigsusp sh 52999 105837 30432 0 3 0x82 piperd syz-executor 8981 91454 30432 0 3 0x82 wait syz-executor 33605 25974 30432 0 3 0x82 piperd syz-executor 28085 501234 30432 0 2 0x2 syz-executor 93704 267836 30432 0 2 0xc82 syz-executor 3716 22359 30432 0 3 0x82 nanoslp syz-executor 82641 103564 30432 0 3 0x82 nanoslp syz-executor 30432 419105 63574 0 2 0x2 syz-executor 63574 154727 14379 0 3 0x10008a sigsusp ksh 14379 9155 32566 0 3 0x98 kqread sshd-session 32566 460624 65835 0 3 0x92 kqread sshd-session 10495 410389 1 0 3 0x100083 ttyin getty 65835 265960 1 0 3 0x88 kqread sshd 96615 240414 79232 74 3 0x1100092 bpf pflogd 79232 77684 1 0 3 0x80 sbwait pflogd 11941 349588 43416 73 3 0x1100090 kqread syslogd 43416 68491 1 0 3 0x100082 sbwait syslogd 58455 98410 1 0 3 0x100080 kqread resolvd 45118 375346 67920 77 3 0x100092 kqread dhcpleased 78383 96553 67920 77 3 0x100092 kqread dhcpleased 67920 282074 1 0 3 0x80 kqread dhcpleased 55712 449722 0 0 3 0x14200 bored smr 80484 184412 0 0 2 0x14200 zerothread 54316 121032 0 0 3 0x14200 aiodoned aiodoned 51581 228959 0 0 3 0x14200 syncer update 12379 418833 0 0 3 0x14200 cleaner cleaner 65962 198130 0 0 7 0x14200 reaper 46924 460154 0 0 3 0x14200 pgdaemon pagedaemon 39787 463006 0 0 3 0x14200 bored viomb 60432 242384 0 0 3 0x40014200 acpi0 acpi0 78215 139351 0 0 3 0x40014200 idle1 19672 106114 0 0 3 0x14200 bored softnet3 41052 212815 0 0 3 0x14200 bored softnet2 21239 377199 0 0 3 0x14200 bored softnet1 23145 172238 0 0 3 0x14200 bored softnet0 42103 448875 0 0 3 0x14200 bored systqmp 46655 421499 0 0 3 0x14200 bored systq 89180 307695 0 0 3 0x14200 tmoslp softclockmp 92148 272943 0 0 2 0x40014200 softclock 76289 244977 0 0 3 0x40014200 idle0 1 520584 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 98373 (syz-executor) thread 0xffff80003c408548 (505441) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83a18368) #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 28085 (syz-executor) thread 0xffff80002a2a5208 (501234) exclusive rrwlock inode r = 0 (0xfffffd806dd1d770) #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 ufs_ihashins+0x4f ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline] #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:159 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1230 #6 ffs_inode_alloc+0x283 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0x113 sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x102 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3109 #10 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806c282438) #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 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3094 #8 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10210 11049K 11333K 166960K 11768 0 pcb 17 12K 12K 166960K 70 0 rtable 181 6K 7K 166960K 394 0 pf 30 16K 19K 166960K 72 0 ifaddr 33 5K 7K 166960K 60 0 ifgroup 47 2K 2K 166960K 85 0 sysctl 3 1K 9K 166960K 7 0 counters 62 36K 37K 166960K 88 0 ioctlops 0 0K 4K 166960K 1513 0 iov 0 0K 24K 166960K 20 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1363 86K 86K 166960K 1699 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 9 0 VM map 2 1K 1K 166960K 2 0 sem 11 1K 1K 166960K 14 0 dirhash 12 2K 2K 166960K 24 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 15 53K 93K 166960K 451 0 sigio 0 0K 0K 166960K 5 0 proc 72 91K 152K 166960K 596 0 subproc 72 4K 4K 166960K 81 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 44 0 in_multi 67 5K 7K 166960K 125 0 ether_multi 1 0K 0K 166960K 4 0 mrt 0 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 133 599K 599K 166960K 133 0 exec 0 0K 1K 166960K 408 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 227 169K 180K 166960K 5754 0 UVM aobj 73 3K 3K 166960K 75 0 pinsyscall 41 82K 108K 166960K 1556 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 14 0 NDP 10 0K 2K 166960K 40 0 temp 44 8664K 8732K 166960K 18863 0 kqueue 13 20K 26K 166960K 74 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 53 0 49 1 0 1 1 0 8 0 rtentry 176 123 0 41 5 0 5 5 0 8 0 unpcb 144 250 0 233 3 1 2 2 0 8 1 syncache 336 5 0 5 2 1 1 1 0 8 1 tcpqe 32 1 0 1 1 0 1 1 0 8 1 tcpcb 808 65 0 60 1 0 1 1 0 8 0 arp 128 20 0 7 1 0 1 1 0 8 0 inpcb 384 277 0 269 3 1 2 2 0 8 0 nd6 144 28 0 12 1 0 1 1 0 8 0 pkpcb 40 4 0 4 2 1 1 1 0 8 1 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1192 8 0 8 1 0 1 1 0 8 1 pffrag 232 3 0 0 1 0 1 1 0 482 0 pffrnode 88 3 0 0 1 0 1 1 0 8 0 pffrent 40 4 0 1 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 30 0 3 1 0 1 1 0 8 0 pfstkey 128 30 0 3 1 0 1 1 0 8 0 pfstate 384 30 0 3 3 0 3 3 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 472 0 138 27 1 26 27 0 8 2 art_table 32 474 0 138 4 0 4 4 0 8 0 art_node 16 122 0 47 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 0 1 0 1 1 0 8 0 semapl 112 10 0 1 1 0 1 1 0 8 0 shmpl 112 72 0 2 3 0 3 3 0 8 1 dirhash 1024 25 0 8 3 0 3 3 0 8 0 dino2pl 256 2190 0 689 95 0 95 95 0 8 0 ffsino 288 2190 0 689 109 0 109 109 0 8 0 nchpl 144 2823 0 1140 63 0 63 63 0 8 0 uvmvnodes 80 2452 0 0 51 0 51 51 0 8 0 vnodes 216 2452 0 0 137 0 137 137 0 8 0 namei 1024 9197 0 9195 2 1 1 1 0 8 0 percpumem 16 59 0 13 1 0 1 1 0 8 0 kstatmem 264 48 0 26 3 1 2 3 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 216 8642 0 8642 5 4 1 4 1 8 1 plimitpl 152 165 0 147 1 0 1 1 0 8 0 sigapl 424 752 0 702 7 0 7 7 0 8 0 knotepl 120 560 0 0 17 0 17 17 0 8 0 kqueuepl 224 101 0 91 1 0 1 1 0 8 0 pipepl 336 132 0 105 3 0 3 3 0 8 0 fdescpl 520 731 0 702 3 0 3 3 0 8 0 filepl 160 3731 0 3519 14 1 13 13 0 8 2 lockfpl 104 106 0 104 1 0 1 1 0 8 0 lockfspl 48 47 0 45 1 0 1 1 0 8 0 sessionpl 144 25 0 16 1 0 1 1 0 8 0 pgrppl 48 39 0 22 1 0 1 1 0 8 0 ucredpl 104 617 0 604 1 0 1 1 0 8 0 zombiepl 144 704 0 702 1 0 1 1 0 8 0 processpl 1208 752 0 702 5 0 5 5 0 8 0 procpl 656 1286 0 1232 6 0 6 6 0 8 0 srpgc 96 6 0 6 2 1 1 1 0 8 1 sosppl 168 3 0 3 2 1 1 1 0 8 1 sockpl 728 591 0 562 7 2 5 6 0 8 2 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 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 122 0 0 16 0 16 16 0 8 0 mcl2k 2048 30 0 0 4 0 4 4 0 8 0 mtagpl 96 43 0 0 2 0 2 2 0 8 0 mbufpl 256 206 0 0 13 0 13 13 0 8 0 bufpl 280 2957 0 123 203 0 203 203 0 8 0 anonpl 32 7090 0 0 58 0 58 58 0 246 0 amapchunkpl 152 18041 0 17535 30 4 26 28 0 158 0 amappl16 200 2297 0 2215 8 0 8 8 0 8 0 amappl15 192 3 0 3 1 1 0 1 0 8 0 amappl14 184 117 0 104 1 0 1 1 0 8 0 amappl13 176 4 0 4 2 2 0 1 0 8 0 amappl12 168 1386 0 1355 4 1 3 3 0 8 0 amappl11 160 55 0 41 1 0 1 1 0 8 0 amappl10 152 20 0 19 1 0 1 1 0 8 0 amappl9 144 244 0 244 1 1 0 1 0 8 0 amappl8 136 26 0 23 1 0 1 1 0 8 0 amappl7 128 116 0 103 1 0 1 1 0 8 0 amappl6 120 191 0 185 1 0 1 1 0 8 0 amappl5 112 129 0 120 1 0 1 1 0 8 0 amappl4 104 392 0 370 1 0 1 1 0 8 0 amappl3 96 3406 0 3313 4 0 4 4 0 8 0 amappl2 88 649 0 583 2 0 2 2 0 8 0 amappl1 80 9936 0 9321 15 0 15 15 0 8 0 amappl 88 5009 0 4860 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 128 254 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 74 0 2 2 0 2 2 0 8 0 uaddrrnd 24 731 0 702 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 731 0 702 1 0 1 1 0 8 0 vmmpekpl 168 7489 0 7436 3 0 3 3 0 8 0 vmmpepl 168 52503 0 50592 99 2 97 97 0 357 0 vmsppl 480 730 0 702 5 0 5 5 0 8 0 rwobjpl 72 19006 0 15472 67 0 67 67 0 8 0 pdppl 4096 1470 0 1404 106 32 74 86 0 8 8 pvpl 32 14857 0 0 121 1 120 120 0 265 0 pmappl 256 730 0 702 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 392 0 37 11 0 11 11 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace _copyinstr() at _copyinstr+0x58 sys_unveil(ffff80003c408548,ffff80003c461e70,ffff80003c461dc0) at sys_unveil+0x152 sys/kern/vfs_syscalls.c:982 syscall(ffff80003c461e70) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c461e70) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb8e22e5e790, 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 __mp_lock(ffffffff83a18160) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83a18160) at __mp_lock+0x192 sys/kern/kern_lock.c:144 reaper(ffff8000ffffd1f8) at reaper+0x232 sys/kern/kern_exit.c:482 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 __mp_lock(ffffffff83a18160) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83a18160) at __mp_lock+0x192 sys/kern/kern_lock.c:144 reaper(ffff8000ffffd1f8) at reaper+0x232 sys/kern/kern_exit.c:482 end trace frame: 0x0, count: -5