uvm_fault(0xfffffd806b9eab88, 0x0, 0, 1) -> e kernel: page fault trap, code=0 Stopped at _copyinstr+0x58: lodsb (%rsi) TID PID UID PRFLAGS PFLAGS CPU COMMAND 383556 91613 0 0 0 1 syz-executor *478569 34737 0 0x2000 0x4000000 0K syz-executor _copyinstr() at _copyinstr+0x58 sys_unveil(ffff800033409a10,ffff80003c457160,ffff80003c4570b0) at sys_unveil+0x152 sys/kern/vfs_syscalls.c:982 syscall(ffff80003c457160) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c457160) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xdc8e92270, 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(0xfffffd806b9eab88, 0x0, 0, 1) -> e ddb{0}> trace _copyinstr() at _copyinstr+0x58 sys_unveil(ffff800033409a10,ffff80003c457160,ffff80003c4570b0) at sys_unveil+0x152 sys/kern/vfs_syscalls.c:982 syscall(ffff80003c457160) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c457160) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xdc8e92270, count: -4 ddb{0}> show registers rdi 0xffff80002a288000 rsi 0 rbp 0xffff80003c456f60 rbx 0x72 rdx 0x400 rcx 0xffff80003c452000 rax 0x7f7fffffc000 r8 0x400 r9 0xffff80003c456f00 r10 0x6c7b030bb36a95f8 r11 0xffffffff82211fe0 copystr_fault r12 0xffff80002a288000 r13 0xffff80003c457028 r14 0x400 r15 0 rip 0xffffffff82211fb8 _copyinstr+0x58 cs 0x8 rflags 0x50206 acpi_pdirpa+0x3c077 rsp 0xffff80003c456ee8 ss 0x10 _copyinstr+0x58: lodsb (%rsi) ddb{0}> show proc PROC (syz-executor) tid=478569 pid=34737 tcnt=3 stat=onproc flags process=2000 proc=4000000 runpri=32, usrpri=85, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff800033409a10 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800031401a20,0xffff800033408fc0 process=0xffff80003c024ec0 user=0xffff80003c452000, vmspace=0xfffffd806b9eab88 estcpu=35, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 98507 349079 19917 0 2 0x40 syz-executor 91613 383556 62237 0 7 0 syz-executor 91613 319990 62237 0 2 0x4000000 syz-executor 73617 5216 8963 0 2 0 syz-executor 73617 147631 8963 0 3 0x4000080 fsleep syz-executor 73617 285462 8963 0 3 0x4000080 fsleep syz-executor 34737 255734 13289 0 4 0x82000 syz-executor 34737 413292 13289 0 4 0x4082000 syz-executor *34737 478569 13289 0 7 0x4002000 syz-executor 19917 448289 40213 0 3 0x82 ppwait syz-executor 33784 366084 92352 0 3 0x3000 suspend syz-executor 33784 55894 92352 0 2 0x4081000 syz-executor 41875 225789 40213 0 3 0x82 nanoslp syz-executor 20070 428408 1 0 3 0x100083 ttyin getty 56582 381875 0 0 3 0x14200 bored sosplice 91232 436158 40213 0 2 0x2 syz-executor 8963 31321 40213 0 3 0x82 nanoslp syz-executor 62237 314646 40213 0 2 0xc82 syz-executor 13289 446908 40213 0 3 0x82 nanoslp syz-executor 16772 362035 40213 0 2 0x2 syz-executor 92352 179350 40213 0 3 0x82 nanoslp syz-executor 40213 344475 32500 0 2 0x2 syz-executor 32500 304721 89263 0 3 0x10008a sigsusp ksh 89263 19766 16541 0 3 0x98 kqread sshd-session 16541 317202 213 0 3 0x92 kqread sshd-session 213 91622 1 0 3 0x88 kqread sshd 24148 221608 62508 74 3 0x1100092 bpf pflogd 62508 97 1 0 3 0x80 sbwait pflogd 33508 300834 93195 73 3 0x1100090 kqread syslogd 93195 446754 1 0 3 0x100082 sbwait syslogd 62105 279065 1 0 3 0x100080 kqread resolvd 16144 13311 88059 77 3 0x100092 kqread dhcpleased 10398 422472 88059 77 3 0x100092 kqread dhcpleased 88059 74884 1 0 3 0x80 kqread dhcpleased 56156 517725 0 0 3 0x14200 bored smr 97053 337965 0 0 2 0x14200 zerothread 16703 13985 0 0 3 0x14200 aiodoned aiodoned 13047 478918 0 0 3 0x14200 syncer update 77905 333481 0 0 3 0x14200 cleaner cleaner 97254 206734 0 0 3 0x14200 reaper reaper 28597 297449 0 0 3 0x14200 pgdaemon pagedaemon 16168 164969 0 0 3 0x14200 bored viomb 49687 48483 0 0 3 0x40014200 acpi0 acpi0 4953 458976 0 0 3 0x40014200 idle1 70025 125666 0 0 3 0x14200 bored softnet7 46731 197282 0 0 3 0x14200 bored softnet6 2965 508831 0 0 3 0x14200 bored softnet5 44306 423436 0 0 3 0x14200 bored softnet4 6343 180380 0 0 3 0x14200 bored softnet3 55259 470454 0 0 3 0x14200 bored softnet2 46202 488 0 0 3 0x14200 bored softnet1 99443 331871 0 0 2 0x14200 softnet0 8826 105859 0 0 3 0x14200 bored systqmp 83317 419880 0 0 3 0x14200 bored systq 15110 452951 0 0 3 0x14200 tmoslp softclockmp 81065 214833 0 0 2 0x40014200 softclock 68401 204219 0 0 3 0x40014200 idle0 1 417009 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 34737 (syz-executor) thread 0xffff800033409a10 (478569) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff839c13b0) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 #2 sleep_finish+0x2d8 sys/kern/kern_synch.c:367 #3 msleep_nsec+0x132 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+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 #7 Xsyscall+0x128 Process 33784 (syz-executor) thread 0xffff800031401cb8 (55894) exclusive rrwlock inode r = 0 (0xfffffd806e36d8f0) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vn_write+0x18f sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x242 sys/kern/sys_generic.c:380 #7 sys_write+0xa2 sys/kern/sys_generic.c:300 #8 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 #9 Xsyscall+0x128 Process 91232 (syz-executor) thread 0xffff8000ffff3238 (436158) exclusive rrwlock inode r = 0 (0xfffffd805d8bfec8) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2a2 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:1203 #8 ufs_lookup+0x1a36 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x93a sys/kern/vfs_lookup.c:566 #11 namei+0x7ca sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1864 #13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806bcc0a18) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 #6 namei+0x7ca sys/kern/vfs_lookup.c:250 #7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1864 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 #9 Xsyscall+0x128 Process 16772 (syz-executor) thread 0xffff80002a2b8fa8 (362035) exclusive rrwlock inode r = 0 (0xfffffd8070906b08) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2a2 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:1203 #8 ufs_lookup+0x1a36 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x93a sys/kern/vfs_lookup.c:566 #11 namei+0x7ca sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1864 #13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd807602bc60) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 #6 namei+0x7ca sys/kern/vfs_lookup.c:250 #7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1864 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10234 11067K 12490K 166960K 14092 0 pcb 17 16K 18K 166960K 419 0 rtable 164 8K 9K 166960K 532 0 pf 47 20K 67487K 166960K 201 0 ifaddr 37 6K 7K 166960K 116 0 ifgroup 63 2K 3K 166960K 198 0 sysctl 4 1K 9K 166960K 20 0 counters 72 37K 38K 166960K 210 0 ioctlops 0 0K 4K 166960K 1795 0 iov 0 0K 16K 166960K 91 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1520 96K 96K 166960K 3079 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 23 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 131 0 dirhash 12 2K 2K 166960K 57 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 232K 166960K 1810 0 sigio 0 0K 0K 166960K 82 0 proc 73 115K 147K 166960K 837 0 subproc 72 4K 4K 166960K 109 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 298 0 in_multi 66 4K 7K 166960K 197 0 ether_multi 1 0K 0K 166960K 17 0 mrt 1 0K 0K 166960K 12 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 103 466K 466K 166960K 103 0 exec 0 0K 1K 166960K 647 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 228 175K 210K 166960K 18150 0 UVM aobj 22 2K 4K 166960K 27 0 pinsyscall 41 82K 104K 166960K 3043 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 78 0 NDP 14 0K 2K 166960K 85 0 temp 74 8652K 8780K 166960K 87769 0 kqueue 13 20K 32K 166960K 330 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 120 319 0 316 4 1 3 3 0 8 2 rtentry 176 163 0 104 5 0 5 5 0 8 0 unpcb 144 1267 0 1250 10 6 4 4 0 8 3 syncache 336 12 0 12 4 3 1 1 0 8 1 tcpqe 32 4 0 4 3 2 1 1 0 8 1 tcpcb 736 915 0 907 25 17 8 11 0 8 6 arp 128 22 0 14 1 0 1 1 0 8 0 ipq 40 1 0 1 1 1 0 1 0 8 0 ipqe 40 3 0 3 1 1 0 1 0 8 0 inpcb 328 2420 0 2409 43 32 11 17 0 8 8 nd6 144 29 0 18 1 0 1 1 0 8 0 pkpcb 40 13 0 13 2 2 0 1 0 8 0 kcovpl 48 12 0 4 1 0 1 1 0 8 0 mppekey 1024 2 0 2 2 2 0 1 0 8 0 ppxss 1192 54 0 54 3 2 1 1 0 8 1 pppxif 1504 5 0 5 4 4 0 1 0 8 0 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 13 0 4 1 0 1 1 0 482 0 pffrnode 88 11 0 3 1 0 1 1 0 8 0 pffrent 40 20 0 11 1 0 1 1 0 8 0 pfosfp 40 1428 0 1428 5 0 5 5 0 8 5 pfosfpen 112 1428 0 1428 21 0 21 21 0 8 21 pfrktable 1344 2 0 2 1 1 0 1 0 8 0 pfanchor 1288 1 0 0 1 0 1 1 0 8 0 pftag 88 2 0 0 1 0 1 1 0 8 0 pfstitem 24 143 0 57 1 0 1 1 0 8 0 pfstkey 128 149 0 64 3 0 3 3 0 8 0 pfstate 384 145 0 60 9 0 9 9 0 8 0 pfrule 1344 31 0 22 2 1 1 2 0 8 0 rttmr 136 2 0 2 2 2 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 727 0 425 30 5 25 28 0 8 1 art_table 40 728 0 425 5 0 5 5 0 8 0 art_node 32 161 0 110 1 0 1 1 0 8 0 sysvmsgpl 40 57 0 52 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 125 0 115 1 0 1 1 0 8 0 shmpl 112 24 0 5 1 0 1 1 0 8 0 dirhash 1024 47 0 30 3 0 3 3 0 8 0 dino2pl 256 4875 0 3363 96 0 96 96 0 8 0 ffsino 296 4875 0 3363 118 0 118 118 0 8 0 nchpl 144 7271 0 5583 64 0 64 64 0 8 0 rtmask 32 7 0 7 3 2 1 1 0 8 1 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 25984 0 25983 4 3 1 2 0 8 0 percpumem 16 120 0 69 1 0 1 1 0 8 0 kstatmem 264 130 0 96 3 0 3 3 0 8 0 acpiwqpl 32 65 0 65 1 0 1 1 1 8 1 scsiplug 72 6 0 6 4 3 1 1 0 8 1 scxspl 216 54196 0 54196 11 9 2 8 1 8 2 plimitpl 152 577 0 558 1 0 1 1 0 8 0 sigapl 424 2116 0 2063 7 0 7 7 0 8 0 knotepl 120 1066 0 0 32 0 32 32 0 8 0 kqueuepl 224 612 0 603 7 5 2 5 0 8 1 pipepl 344 320 0 293 6 3 3 6 0 8 0 fdescpl 528 2090 0 2060 3 0 3 3 0 8 0 filepl 160 14677 0 14461 33 15 18 18 0 8 7 lockfpl 104 675 0 672 2 1 1 2 0 8 0 lockfspl 48 306 0 303 1 0 1 1 0 8 0 sessionpl 144 34 0 25 1 0 1 1 0 8 0 pgrppl 48 74 0 57 1 0 1 1 0 8 0 ucredpl 104 2326 0 2313 1 0 1 1 0 8 0 zombiepl 144 2318 0 2316 2 1 1 1 0 8 0 processpl 1248 2116 0 2063 5 0 5 5 0 8 0 procpl 664 4892 0 4833 9 2 7 7 0 8 0 sosppl 168 6 0 5 1 0 1 1 0 8 0 sockpl 752 4063 0 4032 62 49 13 25 0 8 8 mcl64k 65536 17 0 0 3 0 3 3 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 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 120 0 0 14 0 14 14 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 30 0 0 4 0 4 4 0 8 0 mtagpl 96 11 0 0 1 0 1 1 0 8 0 mbufpl 256 1173 0 0 74 0 74 74 0 8 0 bufpl 280 22473 0 16330 440 0 440 440 0 8 0 anonpl 32 13597 0 0 110 0 110 110 0 246 0 amapchunkpl 152 61594 0 61146 52 24 28 30 0 158 6 amappl16 200 7651 0 7579 66 53 13 30 0 8 2 amappl15 192 9 0 9 2 2 0 1 0 8 0 amappl14 184 139 0 127 1 0 1 1 0 8 0 amappl13 176 24 0 24 1 1 0 1 0 8 0 amappl12 168 2811 0 2782 3 1 2 2 0 8 0 amappl11 160 50 0 36 1 0 1 1 0 8 0 amappl10 152 4 0 4 1 1 0 1 0 8 0 amappl9 144 244 0 244 1 1 0 1 0 8 0 amappl8 136 25 0 22 1 0 1 1 0 8 0 amappl7 128 129 0 117 1 0 1 1 0 8 0 amappl6 120 222 0 218 1 0 1 1 0 8 0 amappl5 112 143 0 133 1 0 1 1 0 8 0 amappl4 104 343 0 324 1 0 1 1 0 8 0 amappl3 96 12472 0 12369 4 0 4 4 0 8 0 amappl2 88 764 0 701 2 0 2 2 0 8 0 amappl1 80 16724 0 16128 23 8 15 20 0 8 1 amappl 88 17047 0 16892 5 0 5 5 0 92 0 dma65536 65536 1 0 1 1 1 0 1 0 8 0 dma16384 16384 2 0 2 1 1 0 1 0 8 0 dma4096 4096 3 0 3 3 3 0 1 0 8 0 dma2048 2048 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 128 258 0 258 6 5 1 1 0 8 1 dma64 64 7 0 7 2 2 0 1 0 8 0 dma32 32 8 0 8 2 2 0 1 0 8 0 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 26 0 5 1 0 1 1 0 8 0 uaddrrnd 24 2090 0 2060 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2090 0 2060 1 0 1 1 0 8 0 vmmpekpl 168 17912 0 17863 3 0 3 3 0 8 0 vmmpepl 168 136894 0 134917 126 27 99 113 0 357 1 vmsppl 488 2089 0 2060 6 1 5 5 0 8 0 rwobjpl 80 43079 0 36170 144 2 142 143 0 8 0 pdppl 4096 4188 0 4120 136 62 74 86 0 8 6 pvpl 32 26010 0 0 210 0 210 210 0 265 0 pmappl 256 2089 0 2060 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 409 0 99 9 0 9 9 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace _copyinstr() at _copyinstr+0x58 sys_unveil(ffff800033409a10,ffff80003c457160,ffff80003c4570b0) at sys_unveil+0x152 sys/kern/vfs_syscalls.c:982 syscall(ffff80003c457160) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c457160) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xdc8e92270, 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: 0x7b4ffbd971b0, 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: 0x7b4ffbd971b0, count: -3