panic: Caught invalid memory access at ffff800001dc33b0 size 104 op 1 Stopped at db_enter+0x17: popq %rbp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 77090 18153 0 0x1 0x4000000 0K syz-executor 51233 8530 0 0x2 0 1 syz-executor db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff84631589) at panic+0x270 sys/kern/subr_prf.c:198 kasan_memcpy(ffff800001dc33b0,ffff800001e9a6a8,68) at kasan_memcpy+0x1ec sysctl_sysvipc(ffff80003bba64e8,1,200000000040,ffff80003bba64c0) at sysctl_sysvipc+0x422 sys/kern/kern_sysctl.c:2777 kern_sysctl_dirs(33,ffff80003bba64e8,1,200000000040,ffff80003bba64c0,0,1,1ffff00007774c14) at kern_sysctl_dirs+0x407 sys/kern/kern_sysctl.c:445 kern_sysctl(ffff80003bba64e4,2,200000000040,ffff80003bba64c0,0,0,ffff80003bba6730) at kern_sysctl+0x1ce sys/kern/kern_sysctl.c:529 sys_sysctl(ffff800045ff4d20,ffff80003bba6730,ffff80003bba66a0) at sys_sysctl+0x54f sys/kern/kern_sysctl.c:309 syscall(ffff80003bba6730) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003bba6730) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3a3db8ebf00, 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 ffff800001dc33b0 size 104 op 1 ddb{0}> trace db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff84631589) at panic+0x270 sys/kern/subr_prf.c:198 kasan_memcpy(ffff800001dc33b0,ffff800001e9a6a8,68) at kasan_memcpy+0x1ec sysctl_sysvipc(ffff80003bba64e8,1,200000000040,ffff80003bba64c0) at sysctl_sysvipc+0x422 sys/kern/kern_sysctl.c:2777 kern_sysctl_dirs(33,ffff80003bba64e8,1,200000000040,ffff80003bba64c0,0,1,1ffff00007774c14) at kern_sysctl_dirs+0x407 sys/kern/kern_sysctl.c:445 kern_sysctl(ffff80003bba64e4,2,200000000040,ffff80003bba64c0,0,0,ffff80003bba6730) at kern_sysctl+0x1ce sys/kern/kern_sysctl.c:529 sys_sysctl(ffff800045ff4d20,ffff80003bba6730,ffff80003bba66a0) at sys_sysctl+0x54f sys/kern/kern_sysctl.c:309 syscall(ffff80003bba6730) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003bba6730) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3a3db8ebf00, count: -9 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80003bba5cf0 rbx 0xffff80003bba5d60 rdx 0 rcx 0xffffffff85008ff0 cpu_info_full_primary+0x1ff0 rax 0xffff80000016f000 r8 0x101010101010101 r9 0x8080808080808080 r10 0xffff80003bba5ad8 r11 0xffffffff82c62820 x86_bus_space_io_read_1 r12 0xffffffff84631589 .str.14+0x9a5e9 r13 0xffffffff85009c08 cpu_info_full_primary+0x2c08 r14 0xffffffff85009e07 cpu_info_full_primary+0x2e07 r15 0x1 rip 0xffffffff82b5b547 db_enter+0x17 cs 0x8 rflags 0x246 rsp 0xffff80003bba5cf0 ss 0x10 db_enter+0x17: popq %rbp ddb{0}> show proc PROC (syz-executor) tid=77090 pid=18153 tcnt=2 stat=onproc flags process=1 proc=4000000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800045ff42c0,0xffff800045ff5790 process=0xffff800045fe9838 user=0xffff80003bb9b000, vmspace=0xffff800001c3eb88 estcpu=36, cpticks=20, pctcpu=0.0, user=0, sys=20, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 74459 462114 22085 0 2 0 syz-executor 74459 406139 22085 0 3 0x4000080 fsleep syz-executor 18153 416240 37040 0 2 0x1 syz-executor *18153 77090 37040 0 7 0x4000001 syz-executor 65133 393544 16284 0 2 0x10 syz-executor 65133 32009 16284 0 3 0x4000090 fsleep syz-executor 55250 7806 1 0 3 0x80 nanoslp init 56689 112027 27674 0 2 0x10 syz-executor 56689 167280 27674 0 3 0x4000090 fifow syz-executor 56689 34655 27674 0 3 0x4000090 fsleep syz-executor 65068 64540 0 0 3 0x14200 acct acct 46431 326730 53397 0 2 0xc80 syz-executor 46431 218213 53397 0 3 0x4000080 sbwait syz-executor 46431 473708 53397 0 3 0x4000080 fsleep syz-executor 68952 12672 56600 0 2 0 syz-executor 68952 366875 56600 0 3 0x4000080 sbwait syz-executor 68952 147389 56600 0 3 0x4000080 fsleep syz-executor 79108 435928 8570 0 2 0 syz-executor 79108 112870 8570 0 3 0x4000080 sbwait syz-executor 79108 236903 8570 0 3 0x4000080 fsleep syz-executor 79108 251912 8570 0 3 0x4000080 fsleep syz-executor 48938 39675 8530 0 2 0 syz-executor 48938 515235 8530 0 3 0x4000080 tunread syz-executor 48938 107750 8530 0 3 0x4000080 fsleep syz-executor 43713 319280 0 0 3 0x14280 nfsidl nfsio 66348 51320 0 0 3 0x14280 nfsidl nfsio 61641 101192 0 0 3 0x14280 nfsidl nfsio 24773 450104 0 0 3 0x14280 nfsidl nfsio 61539 258141 0 0 3 0x14280 nfsidl nfsio 45542 156166 0 0 3 0x14280 nfsidl nfsio 8558 70238 0 0 3 0x14280 nfsidl nfsio 55546 114109 0 0 3 0x14280 nfsidl nfsio 32694 490963 0 0 3 0x14280 nfsidl nfsio 59750 515721 0 0 3 0x14280 nfsidl nfsio 81470 170468 0 0 3 0x14280 nfsidl nfsio 91988 248484 0 0 3 0x14280 nfsidl nfsio 34622 71554 0 0 3 0x14280 nfsidl nfsio 2286 329747 0 0 3 0x14280 nfsidl nfsio 93961 165595 0 0 3 0x14280 nfsidl nfsio 95507 142618 0 0 3 0x14280 nfsidl nfsio 19541 96318 0 0 3 0x14280 nfsidl nfsio 32984 400792 0 0 3 0x14280 nfsidl nfsio 55751 183647 0 0 3 0x14280 nfsidl nfsio 45260 121202 0 0 3 0x14280 nfsidl nfsio 56600 103397 10286 0 2 0x2 syz-executor 8530 51233 10286 0 7 0x2 syz-executor 16284 238479 10286 0 2 0xc82 syz-executor 8570 485513 10286 0 2 0xc82 syz-executor 27674 299439 10286 0 2 0x2 syz-executor 53397 17843 10286 0 2 0xc82 syz-executor 37040 409140 10286 0 2 0xc82 syz-executor 22085 315463 10286 0 2 0xc82 syz-executor 10286 384018 1 0 3 0x82 kqread syz-executor 93669 221789 1 74 2 0x1100092 pflogd 6620 20432 1 73 2 0x1100090 syslogd 14607 164055 0 0 3 0x14200 bored smr 43157 118963 0 0 2 0x14200 zerothread 95084 158000 0 0 3 0x14200 aiodoned aiodoned 39324 330151 0 0 3 0x14200 syncer update 13835 226019 0 0 3 0x14200 cleaner cleaner 85255 447317 0 0 3 0x14200 reaper reaper 61843 177912 0 0 3 0x14200 pgdaemon pagedaemon 82381 100197 0 0 3 0x14200 bored viomb 85125 91900 0 0 3 0x40014200 acpi0 acpi0 51732 226692 0 0 3 0x40014200 idle1 61609 247259 0 0 3 0x14200 bored softnet1 75730 509447 0 0 2 0x14200 softnet0 51082 206314 0 0 3 0x14200 bored systqmp 59237 153196 0 0 3 0x14200 bored systq 81172 182039 0 0 2 0x14200 softclockmp 64794 522597 0 0 3 0x40014200 tmoslp softclock 80955 55263 0 0 3 0x40014200 idle0 1 377201 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11058 12252K 12468K 166960K 12505 0 pcb 17 28K 29K 166960K 166 0 rtable 253 13K 13K 166960K 367 0 pf 36 22K 24K 166960K 82 0 ifaddr 44 12K 13K 166960K 58 0 ifgroup 59 2K 2K 166960K 96 0 sysctl 4 1K 13K 166960K 12 0 counters 72 43K 43K 166960K 92 0 ioctlops 0 0K 4K 166960K 1582 0 iov 1 12K 16K 166960K 56 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1303 84K 84K 166960K 1824 0 UFS quota 1 36K 36K 166960K 1 0 UFS mount 5 44K 44K 166960K 5 0 shm 4 10K 14K 166960K 52 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 46 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1734 201K 292K 166960K 11964 0 file desc 18 65K 93K 166960K 750 0 sigio 0 0K 0K 166960K 13 0 proc 14 30K 177K 166960K 680 0 subproc 72 9K 9K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 20K 20K 166960K 1 0 ip_moptions 0 0K 0K 166960K 73 0 in_multi 99 7K 7K 166960K 99 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 17 0 ISOFS mount 1 36K 36K 166960K 1 0 MSDOSFS mount 1 20K 20K 166960K 1 0 ttys 79 546K 546K 166960K 79 0 exec 0 0K 2K 166960K 418 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 168 135K 240K 166960K 8908 0 UVM aobj 131 7K 7K 166960K 133 0 pinsyscall 1047 1948K 1948K 166960K 1919 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 2 0 NDP 13 0K 2K 166960K 39 0 temp 52 9190K 9193K 166960K 11851 0 kqueue 4 13K 53K 166960K 154 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 38 0 38 1 0 1 1 0 8 1 rtentry 176 119 0 1 6 0 6 6 0 8 0 unpcb 144 838 0 819 12 10 2 6 0 8 1 syncache 336 4 0 4 1 1 0 1 0 8 0 tcpcb 736 60 0 58 1 0 1 1 0 8 0 arp 136 19 0 0 1 0 1 1 0 8 0 inpcb 328 508 0 504 13 9 4 7 0 8 3 nd6 152 31 0 0 2 0 2 2 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 4 0 4 3 2 1 1 0 8 1 pffrag 232 5 0 0 1 0 1 1 0 482 0 pffrnode 88 5 0 0 1 0 1 1 0 8 0 pffrent 40 12 0 7 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 pfqueue 320 2 0 2 1 1 0 1 0 8 0 pfstitem 24 58 0 25 1 0 1 1 0 8 0 pfstkey 128 58 0 25 2 0 2 2 0 8 0 pfstate 448 58 0 25 5 1 4 5 0 8 0 pfrule 1360 28 0 23 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 470 0 0 30 0 30 30 0 8 0 art_table 40 471 0 0 5 0 5 5 0 8 0 art_node 32 119 0 11 1 0 1 1 0 8 0 sysvmsgpl 40 5 0 4 2 1 1 1 0 8 0 semapl 72 44 0 34 1 0 1 1 0 8 0 shmpl 112 130 0 2 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2680 0 1203 93 0 93 93 0 8 0 ffsino 296 2680 0 1203 114 0 114 114 0 8 0 nchpl 144 3766 0 2059 64 0 64 64 0 8 0 vnodes 216 2995 0 0 167 0 167 167 0 8 0 namei 1024 12076 0 12076 3 1 2 2 0 8 2 percpumem 16 62 0 10 1 0 1 1 0 8 0 kstatmem 264 49 0 20 2 0 2 2 0 8 0 scxspl 216 12417 0 12417 8 7 1 4 1 8 1 plimitpl 152 59 0 48 1 0 1 1 0 8 0 sigapl 424 1094 0 1035 9 1 8 8 0 8 0 knotepl 120 124 0 0 4 0 4 4 0 8 0 kqueuepl 224 300 0 297 5 4 1 5 0 8 0 pipepl 344 242 0 215 3 0 3 3 0 8 0 fdescpl 528 1055 0 1033 3 0 3 3 0 8 0 filepl 160 6155 0 5964 24 11 13 16 0 8 3 lockfpl 104 320 0 320 2 0 2 2 0 8 2 lockfspl 48 84 0 84 1 0 1 1 0 8 1 sessionpl 144 69 0 64 1 0 1 1 0 8 0 pgrppl 48 83 0 70 1 0 1 1 0 8 0 ucredpl 104 1259 0 1247 1 0 1 1 0 8 0 zombiepl 144 1035 0 1035 2 1 1 1 0 8 1 processpl 1232 1094 0 1035 6 0 6 6 0 8 0 procpl 664 2179 0 2106 7 0 7 7 0 8 0 sosppl 176 12 0 12 2 1 1 1 0 8 1 sockpl 752 1589 0 1566 35 27 8 17 0 8 5 mcl64k 65536 4 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 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 116 0 0 15 0 15 15 0 8 0 mcl2k 2048 20 0 0 3 0 3 3 0 8 0 mextrefs 64 20 0 0 1 0 1 1 0 8 0 mtagpl 96 1 0 0 1 0 1 1 0 8 0 mbufpl 256 264 0 0 16 0 16 16 0 8 0 bufpl 272 3610 0 110 234 0 234 234 0 8 0 anonpl 32 8785 0 0 72 1 71 71 0 222 0 amapchunkpl 152 27547 0 27135 27 2 25 25 0 158 8 amappl16 200 3052 0 3025 32 22 10 15 0 8 7 amappl15 192 10 0 10 3 2 1 1 0 8 1 amappl14 184 458 0 458 1 0 1 1 0 8 1 amappl13 176 123 0 121 1 0 1 1 0 8 0 amappl12 168 1306 0 1286 2 0 2 2 0 8 0 amappl11 160 16 0 16 4 3 1 1 0 8 1 amappl10 152 85 0 81 1 0 1 1 0 8 0 amappl9 144 272 0 272 1 1 0 1 0 8 0 amappl8 136 100 0 98 1 0 1 1 0 8 0 amappl7 128 172 0 166 1 0 1 1 0 8 0 amappl6 120 157 0 157 1 0 1 1 0 8 1 amappl5 112 102 0 99 1 0 1 1 0 8 0 amappl4 104 319 0 310 1 0 1 1 0 8 0 amappl3 96 5690 0 5600 4 0 4 4 0 8 0 amappl2 88 548 0 531 2 0 2 2 0 8 0 amappl1 80 12956 0 12794 15 2 13 15 0 8 5 amappl 88 8048 0 7905 5 0 5 5 0 92 1 uvmvnodes 80 119 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 72 132 0 2 3 0 3 3 0 8 0 uaddrrnd 24 1055 0 1033 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1055 0 1033 1 0 1 1 0 8 0 vmmpekpl 168 10649 0 10615 2 0 2 2 0 8 0 vmmpepl 168 73389 0 72349 99 4 95 95 0 357 37 vmsppl 488 1054 0 1033 5 1 4 5 0 8 0 rwobjpl 80 22412 0 21769 32 3 29 29 0 8 1 pdppl 4096 2119 0 2066 111 58 53 87 0 8 0 pvpl 32 15343 0 0 125 1 124 124 0 265 0 pmappl 256 1054 0 1033 3 0 3 3 0 8 0 extentpl 40 46 0 28 1 0 1 1 0 8 0 phpool 112 527 0 64 14 0 14 14 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:438 panic(ffffffff84631589) at panic+0x270 sys/kern/subr_prf.c:198 kasan_memcpy(ffff800001dc33b0,ffff800001e9a6a8,68) at kasan_memcpy+0x1ec sysctl_sysvipc(ffff80003bba64e8,1,200000000040,ffff80003bba64c0) at sysctl_sysvipc+0x422 sys/kern/kern_sysctl.c:2777 kern_sysctl_dirs(33,ffff80003bba64e8,1,200000000040,ffff80003bba64c0,0,1,1ffff00007774c14) at kern_sysctl_dirs+0x407 sys/kern/kern_sysctl.c:445 kern_sysctl(ffff80003bba64e4,2,200000000040,ffff80003bba64c0,0,0,ffff80003bba6730) at kern_sysctl+0x1ce sys/kern/kern_sysctl.c:529 sys_sysctl(ffff800045ff4d20,ffff80003bba6730,ffff80003bba66a0) at sys_sysctl+0x54f sys/kern/kern_sysctl.c:309 syscall(ffff80003bba6730) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003bba6730) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3a3db8ebf00, 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:394 x86_ipi_handler() at x86_ipi_handler+0x112 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff85d1e5c0) at __mp_lock+0x272 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff85d1e5c0) at __mp_lock+0x272 sys/kern/kern_lock.c:173 syscall(ffff800029ab4f30) at syscall+0x1048 mi_syscall sys/sys/syscall_mi.h:175 [inline] syscall(ffff800029ab4f30) at syscall+0x1048 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7b250749b190, count: 9 ddb{1}> trace x86_ipi_db(ffff800028ff3ff0) at x86_ipi_db+0x19 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0x112 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff85d1e5c0) at __mp_lock+0x272 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff85d1e5c0) at __mp_lock+0x272 sys/kern/kern_lock.c:173 syscall(ffff800029ab4f30) at syscall+0x1048 mi_syscall sys/sys/syscall_mi.h:175 [inline] syscall(ffff800029ab4f30) at syscall+0x1048 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7b250749b190, count: -6 ddb{1}>