panic: Caught invalid memory access at ffff8000018f83b0 size 104 op 1 Stopped at db_enter+0x17: popq %rbp TID PID UID PRFLAGS PFLAGS CPU COMMAND *179873 80680 0 0 0x4000000 0K syz-executor db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457 panic(ffffffff8463360e) at panic+0x270 sys/kern/subr_prf.c:198 kasan_memcpy(ffff8000018f83b0,ffff800001d81328,68) at kasan_memcpy+0x1ec sysctl_sysvipc(ffff80003a743ee8,1,200000000040,ffff80003a743ec0) at sysctl_sysvipc+0x422 sys/kern/kern_sysctl.c:2777 kern_sysctl_dirs(33,ffff80003a743ee8,1,200000000040,ffff80003a743ec0,0,1,1ffff000074e8754) at kern_sysctl_dirs+0x407 sys/kern/kern_sysctl.c:445 kern_sysctl(ffff80003a743ee4,2,200000000040,ffff80003a743ec0,0,0,ffff80003a744140) at kern_sysctl+0x1ce sys/kern/kern_sysctl.c:529 sys_sysctl(ffff800045fef250,ffff80003a744140,ffff80003a7440a0) at sys_sysctl+0x54f sys/kern/kern_sysctl.c:309 syscall(ffff80003a744140) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003a744140) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4ab208fca10, count: 6 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: Caught invalid memory access at ffff8000018f83b0 size 104 op 1 ddb{0}> trace db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457 panic(ffffffff8463360e) at panic+0x270 sys/kern/subr_prf.c:198 kasan_memcpy(ffff8000018f83b0,ffff800001d81328,68) at kasan_memcpy+0x1ec sysctl_sysvipc(ffff80003a743ee8,1,200000000040,ffff80003a743ec0) at sysctl_sysvipc+0x422 sys/kern/kern_sysctl.c:2777 kern_sysctl_dirs(33,ffff80003a743ee8,1,200000000040,ffff80003a743ec0,0,1,1ffff000074e8754) at kern_sysctl_dirs+0x407 sys/kern/kern_sysctl.c:445 kern_sysctl(ffff80003a743ee4,2,200000000040,ffff80003a743ec0,0,0,ffff80003a744140) at kern_sysctl+0x1ce sys/kern/kern_sysctl.c:529 sys_sysctl(ffff800045fef250,ffff80003a744140,ffff80003a7440a0) at sys_sysctl+0x54f sys/kern/kern_sysctl.c:309 syscall(ffff80003a744140) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003a744140) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4ab208fca10, count: -9 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80003a7436f0 rbx 0xffff80003a743760 rdx 0 rcx 0xffffffff84f6aff0 cpu_info_full_primary+0x1ff0 rax 0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xffff80003a743308 r11 0xffffffff82eaa450 x86_bus_space_io_read_1 r12 0xffffffff8463360e .str.31+0x9cb8e r13 0xffffffff84f6bc08 cpu_info_full_primary+0x2c08 r14 0xffffffff84f6be07 cpu_info_full_primary+0x2e07 r15 0x1 rip 0xffffffff8309ec97 db_enter+0x17 cs 0x8 rflags 0x246 rsp 0xffff80003a7436f0 ss 0x10 db_enter+0x17: popq %rbp ddb{0}> show proc PROC (syz-executor) tid=179873 pid=80680 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800045fefa18,0xffffffff8547a820 process=0xffff800045fea6a8 user=0xffff80003a739000, vmspace=0xffff8000017c7d60 estcpu=36, cpticks=16, pctcpu=0.0, user=0, sys=16, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 80680 346328 15181 0 2 0 syz-executor *80680 179873 15181 0 7 0x4000000 syz-executor 13376 60121 26791 0 2 0 syz-executor 13376 373498 26791 0 3 0x4000080 kqread syz-executor 71145 151898 30375 0 2 0 syz-executor 71145 498594 30375 0 3 0x4000080 ttyout syz-executor 95727 162578 30871 0 2 0x2 ifconfig 30871 327570 56697 0 3 0x10008a sigsusp sh 56697 204846 59265 0 3 0x82 wait syz-executor 63649 90548 1 0 3 0x100083 ttyin getty 39242 231479 0 0 3 0x14200 acct acct 55519 54280 0 0 3 0x14280 nfsidl nfsio 79296 497577 0 0 3 0x14280 nfsidl nfsio 85840 322890 0 0 3 0x14280 nfsidl nfsio 19558 121595 0 0 3 0x14280 nfsidl nfsio 9011 229415 0 0 3 0x14280 nfsidl nfsio 71578 87268 0 0 3 0x14280 nfsidl nfsio 77820 158959 0 0 3 0x14280 nfsidl nfsio 1533 313617 0 0 3 0x14280 nfsidl nfsio 52709 263940 0 0 3 0x14280 nfsidl nfsio 12580 337940 0 0 3 0x14280 nfsidl nfsio 30955 458250 0 0 3 0x14280 nfsidl nfsio 61342 134244 0 0 3 0x14280 nfsidl nfsio 21143 119477 0 0 3 0x14280 nfsidl nfsio 19145 25034 0 0 3 0x14280 nfsidl nfsio 59314 443130 0 0 3 0x14280 nfsidl nfsio 93471 489468 0 0 3 0x14280 nfsidl nfsio 45739 74247 0 0 3 0x14280 nfsidl nfsio 65902 355268 0 0 3 0x14280 nfsidl nfsio 35970 143127 0 0 3 0x14280 nfsidl nfsio 8046 302397 0 0 3 0x14280 nfsidl nfsio 54273 184800 59265 0 3 0x82 piperd syz-executor 981 3140 59265 0 3 0x82 piperd syz-executor 15181 76738 59265 0 2 0xc82 syz-executor 26791 422054 59265 0 2 0xc82 syz-executor 30375 58549 59265 0 2 0xc82 syz-executor 24657 22732 59265 0 2 0x2 syz-executor 24889 273108 59265 0 3 0x82 piperd syz-executor 59265 516110 1 0 2 0x2 syz-executor 93322 145674 1 74 3 0x1100092 bpf pflogd 72985 156796 1 73 2 0x1100090 syslogd 39766 165272 0 0 3 0x14200 bored smr 27450 408088 0 0 2 0x14200 zerothread 87017 153212 0 0 3 0x14200 aiodoned aiodoned 75305 216627 0 0 3 0x14200 syncer update 62073 352460 0 0 3 0x14200 cleaner cleaner 32655 291008 0 0 3 0x14200 reaper reaper 23074 210564 0 0 3 0x14200 pgdaemon pagedaemon 62937 206062 0 0 3 0x14200 bored viomb 19034 211292 0 0 3 0x40014200 acpi0 acpi0 33983 382156 0 0 7 0x40014200 idle1 60864 410359 0 0 3 0x14200 bored softnet1 31302 206607 0 0 2 0x14200 softnet0 96867 458752 0 0 3 0x14200 bored systqmp 90256 207792 0 0 3 0x14200 bored systq 91752 307216 0 0 3 0x14200 tmoslp softclockmp 50276 95310 0 0 3 0x40014200 tmoslp softclock 19412 116614 0 0 3 0x40014200 idle0 1 378502 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11052 12244K 12481K 166960K 12431 0 pcb 17 24K 24K 166960K 59 0 rtable 217 11K 13K 166960K 593 0 pf 34 22K 24K 166960K 77 0 ifaddr 40 11K 13K 166960K 85 0 ifgroup 55 2K 2K 166960K 108 0 sysctl 1 1K 13K 166960K 9 0 counters 70 42K 43K 166960K 98 0 ioctlops 0 0K 4K 166960K 1576 0 iov 0 0K 16K 166960K 15 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1331 86K 86K 166960K 1802 0 UFS quota 1 36K 36K 166960K 1 0 UFS mount 5 44K 44K 166960K 5 0 shm 2 2K 10K 166960K 26 0 VM map 2 1K 1K 166960K 2 0 sem 13 3K 3K 166960K 63 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1734 201K 292K 166960K 11964 0 file desc 15 53K 93K 166960K 593 0 sigio 0 0K 0K 166960K 8 0 proc 23 62K 193K 166960K 878 0 subproc 72 9K 9K 166960K 153 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 20K 20K 166960K 1 0 ip_moptions 0 0K 0K 166960K 7 0 in_multi 88 6K 7K 166960K 187 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 16 0 ISOFS mount 1 36K 36K 166960K 1 0 MSDOSFS mount 1 20K 20K 166960K 1 0 ttys 73 506K 506K 166960K 73 0 exec 0 0K 2K 166960K 544 0 fusefs mount 1 36K 36K 166960K 1 0 tdb 3 1K 1K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 121 130K 242K 166960K 6626 0 UVM aobj 131 7K 7K 166960K 132 0 pinsyscall 1045 1833K 1844K 166960K 1973 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 1 0 NDP 12 0K 1K 166960K 58 0 temp 44 9179K 9183K 166960K 9948 0 kqueue 4 13K 61K 166960K 88 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 28 0 0 1 0 1 1 0 8 0 rtpcb 120 53 0 53 1 0 1 1 0 8 1 rtentry 176 200 0 100 7 1 6 6 0 8 1 unpcb 144 335 0 330 2 0 2 2 0 8 1 syncache 336 4 0 4 2 2 0 1 0 8 0 tcpcb 736 33 0 32 1 0 1 1 0 8 0 arp 136 34 0 18 1 0 1 1 0 8 0 inpcb 328 308 0 306 7 6 1 7 0 8 0 nd6 152 49 0 27 1 0 1 1 0 8 0 kcovpl 48 17 0 9 1 0 1 1 0 8 0 ppxss 1192 2 0 2 2 2 0 1 0 8 0 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 5 0 2 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 44 0 17 1 0 1 1 0 8 0 pfstkey 128 44 0 17 2 0 2 2 0 8 0 pfstate 448 44 0 17 4 0 4 4 0 8 0 pfrule 1360 23 0 18 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 832 0 417 30 1 29 29 0 8 1 art_table 40 833 0 417 5 0 5 5 0 8 0 art_node 32 200 0 109 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 3 2 1 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 72 57 0 46 1 0 1 1 0 8 0 shmpl 112 129 0 1 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2246 0 751 94 0 94 94 0 8 0 ffsino 296 2246 0 751 116 0 116 116 0 8 0 nchpl 144 2951 0 1221 65 0 65 65 0 8 0 vnodes 216 2581 0 0 144 0 144 144 0 8 0 namei 1024 10064 0 10064 3 2 1 2 0 8 1 percpumem 16 65 0 14 1 0 1 1 0 8 0 kstatmem 264 55 0 28 3 1 2 3 0 8 0 scxspl 216 9771 0 9771 5 4 1 3 1 8 1 plimitpl 152 55 0 43 1 0 1 1 0 8 0 sigapl 424 915 0 859 8 0 8 8 0 8 0 knotepl 120 147 0 0 5 1 4 5 0 8 0 kqueuepl 224 140 0 136 1 0 1 1 0 8 0 pipepl 344 275 0 248 3 0 3 3 0 8 0 fdescpl 528 878 0 859 3 0 3 3 0 8 0 filepl 160 4331 0 4155 15 5 10 13 0 8 1 lockfpl 104 167 0 167 1 0 1 1 0 8 1 lockfspl 48 72 0 72 1 0 1 1 0 8 1 sessionpl 144 53 0 48 1 0 1 1 0 8 0 pgrppl 48 71 0 58 1 0 1 1 0 8 0 ucredpl 104 976 0 969 1 0 1 1 0 8 0 zombiepl 144 859 0 859 1 0 1 1 0 8 1 processpl 1232 915 0 859 6 0 6 6 0 8 0 procpl 664 1474 0 1415 9 1 8 8 0 8 0 sosppl 176 4 0 4 1 1 0 1 0 8 0 sockpl 752 703 0 696 12 7 5 10 0 8 3 mcl64k 65536 18 0 0 3 0 3 3 0 8 0 mcl16k 16384 10 0 0 2 0 2 2 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k128 9344 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 120 0 0 15 0 15 15 0 8 0 mcl2k 2048 19 0 0 3 0 3 3 0 8 0 mextrefs 64 27 0 0 1 0 1 1 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 272 0 0 16 0 16 16 0 8 0 bufpl 272 3107 0 105 201 0 201 201 0 8 0 anonpl 32 11059 0 0 90 0 90 90 0 222 0 amapchunkpl 152 19747 0 19477 23 3 20 22 0 158 4 amappl16 200 3757 0 3737 44 31 13 27 0 8 8 amappl15 192 4 0 4 2 2 0 1 0 8 0 amappl14 184 604 0 603 1 0 1 1 0 8 0 amappl13 176 194 0 191 1 0 1 1 0 8 0 amappl12 168 1159 0 1142 2 0 2 2 0 8 0 amappl11 160 35 0 34 1 0 1 1 0 8 0 amappl10 152 64 0 60 1 0 1 1 0 8 0 amappl9 144 278 0 278 2 1 1 1 0 8 1 amappl8 136 132 0 131 1 0 1 1 0 8 0 amappl7 128 170 0 164 1 0 1 1 0 8 0 amappl6 120 253 0 249 1 0 1 1 0 8 0 amappl5 112 126 0 122 1 0 1 1 0 8 0 amappl4 104 333 0 325 1 0 1 1 0 8 0 amappl3 96 4022 0 3960 4 0 4 4 0 8 0 amappl2 88 625 0 606 2 0 2 2 0 8 0 amappl1 80 12908 0 12732 15 1 14 15 0 8 5 amappl 88 5697 0 5601 7 3 4 6 0 92 0 uvmvnodes 80 116 0 0 3 0 3 3 0 8 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 18 0 17 1 0 1 1 0 8 0 aobjpl 72 131 0 1 3 0 3 3 0 8 0 uaddrrnd 24 878 0 859 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 878 0 859 1 0 1 1 0 8 0 vmmpekpl 168 9288 0 9256 2 0 2 2 0 8 0 vmmpepl 168 65361 0 64530 102 15 87 100 0 357 31 vmsppl 488 877 0 859 6 1 5 5 0 8 1 rwobjpl 80 21784 0 21144 35 6 29 33 0 8 2 pdppl 4096 1765 0 1718 133 78 55 87 0 8 8 pvpl 32 16857 0 0 137 1 136 136 0 265 0 pmappl 256 877 0 859 3 0 3 3 0 8 0 extentpl 40 46 0 28 1 0 1 1 0 8 0 phpool 112 520 0 86 13 0 13 13 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457 panic(ffffffff8463360e) at panic+0x270 sys/kern/subr_prf.c:198 kasan_memcpy(ffff8000018f83b0,ffff800001d81328,68) at kasan_memcpy+0x1ec sysctl_sysvipc(ffff80003a743ee8,1,200000000040,ffff80003a743ec0) at sysctl_sysvipc+0x422 sys/kern/kern_sysctl.c:2777 kern_sysctl_dirs(33,ffff80003a743ee8,1,200000000040,ffff80003a743ec0,0,1,1ffff000074e8754) at kern_sysctl_dirs+0x407 sys/kern/kern_sysctl.c:445 kern_sysctl(ffff80003a743ee4,2,200000000040,ffff80003a743ec0,0,0,ffff80003a744140) at kern_sysctl+0x1ce sys/kern/kern_sysctl.c:529 sys_sysctl(ffff800045fef250,ffff80003a744140,ffff80003a7440a0) at sys_sysctl+0x54f sys/kern/kern_sysctl.c:309 syscall(ffff80003a744140) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003a744140) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4ab208fca10, count: -9 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x19: leave x86_ipi_db(ffff800028ff3ff0) at x86_ipi_db+0x19 sys/arch/amd64/amd64/db_interface.c:412 x86_ipi_handler() at x86_ipi_handler+0x112 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 acpicpu_idle() at acpicpu_idle+0x63c sys/dev/acpi/acpicpu_x86.c:-1 sched_idle(ffff800028ff3ff0) at sched_idle+0x566 sys/kern/kern_sched.c:204 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff800028ff3ff0) at x86_ipi_db+0x19 sys/arch/amd64/amd64/db_interface.c:412 x86_ipi_handler() at x86_ipi_handler+0x112 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 acpicpu_idle() at acpicpu_idle+0x63c sys/dev/acpi/acpicpu_x86.c:-1 sched_idle(ffff800028ff3ff0) at sched_idle+0x566 sys/kern/kern_sched.c:204 end trace frame: 0x0, count: -5 ddb{1}>