panic: Caught invalid memory access at ffff800001ba1e18 size 104 op 1 Stopped at db_enter+0x17: popq %rbp TID PID UID PRFLAGS PFLAGS CPU COMMAND *510028 13852 0 0 0x4000000 0K syz-executor db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457 panic(ffffffff846334c7) at panic+0x270 sys/kern/subr_prf.c:198 kasan_memcpy(ffff800001ba1e18,ffff800001b9eee0,68) at kasan_memcpy+0x1ec sysctl_sysvipc(ffff80003bb73ea8,1,200000000180,ffff80003bb73e80) at sysctl_sysvipc+0x422 sys/kern/kern_sysctl.c:2777 kern_sysctl_dirs(33,ffff80003bb73ea8,1,200000000180,ffff80003bb73e80,0,1,1ffff0000776e74c) at kern_sysctl_dirs+0x407 sys/kern/kern_sysctl.c:445 kern_sysctl(ffff80003bb73ea4,2,200000000180,ffff80003bb73e80,0,fffa,ffff80003bb740f0) at kern_sysctl+0x1ce sys/kern/kern_sysctl.c:529 sys_sysctl(ffff8000298a4008,ffff80003bb740f0,ffff80003bb74060) at sys_sysctl+0x54f sys/kern/kern_sysctl.c:309 syscall(ffff80003bb740f0) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003bb740f0) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x638d065d220, 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 ffff800001ba1e18 size 104 op 1 ddb{0}> trace db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457 panic(ffffffff846334c7) at panic+0x270 sys/kern/subr_prf.c:198 kasan_memcpy(ffff800001ba1e18,ffff800001b9eee0,68) at kasan_memcpy+0x1ec sysctl_sysvipc(ffff80003bb73ea8,1,200000000180,ffff80003bb73e80) at sysctl_sysvipc+0x422 sys/kern/kern_sysctl.c:2777 kern_sysctl_dirs(33,ffff80003bb73ea8,1,200000000180,ffff80003bb73e80,0,1,1ffff0000776e74c) at kern_sysctl_dirs+0x407 sys/kern/kern_sysctl.c:445 kern_sysctl(ffff80003bb73ea4,2,200000000180,ffff80003bb73e80,0,fffa,ffff80003bb740f0) at kern_sysctl+0x1ce sys/kern/kern_sysctl.c:529 sys_sysctl(ffff8000298a4008,ffff80003bb740f0,ffff80003bb74060) at sys_sysctl+0x54f sys/kern/kern_sysctl.c:309 syscall(ffff80003bb740f0) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003bb740f0) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x638d065d220, count: -9 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80003bb736b0 rbx 0xffff80003bb73720 rdx 0 rcx 0xffffffff853a2ff0 cpu_info_full_primary+0x1ff0 rax 0xffff80000016da00 r8 0x101010101010101 r9 0x8080808080808080 r10 0xffff80003bb73498 r11 0xffffffff814e1f30 x86_bus_space_io_read_1 r12 0xffffffff846334c7 db_machine_command_table+0x9b027 r13 0xffffffff853a3c08 cpu_info_full_primary+0x2c08 r14 0xffffffff853a3e07 cpu_info_full_primary+0x2e07 r15 0x1 rip 0xffffffff81006567 db_enter+0x17 cs 0x8 rflags 0x246 rsp 0xffff80003bb736b0 ss 0x10 db_enter+0x17: popq %rbp ddb{0}> show proc PROC (syz-executor) tid=510028 pid=13852 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=0xffff8000298a5c90,0xffffffff85d476a0 process=0xffff800045ff21d0 user=0xffff80003bb69000, vmspace=0xffff8000019e21f8 estcpu=36, cpticks=19, pctcpu=0.0, user=0, sys=19, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 13852 225870 78147 0 2 0 syz-executor *13852 510028 78147 0 7 0x4000000 syz-executor 9739 368809 45332 0 2 0 syz-executor 9739 362907 45332 0 2 0x4000000 syz-executor 19163 476641 18135 0 2 0xc80 syz-executor 19163 27838 18135 0 3 0x4000080 sbwait syz-executor 19163 204251 18135 0 3 0x4000080 fsleep syz-executor 19163 269235 18135 0 3 0x4000080 fsleep syz-executor 82882 50448 81588 0 2 0 syz-executor 82882 155229 81588 0 3 0x4000080 fsleep syz-executor 28976 240325 91922 0 2 0 syz-executor 28976 458169 91922 0 3 0x4000080 fsleep syz-executor 28976 34173 91922 0 3 0x4000080 fsleep syz-executor 81833 123184 99701 0 2 0xc80 syz-executor 81833 153136 99701 0 3 0x4000080 fsleep syz-executor 81833 387010 99701 0 3 0x4000080 ttyout syz-executor 81833 348752 99701 0 3 0x4000080 fsleep syz-executor 74934 415423 1 0 3 0x100083 ttyin getty 91922 313988 12809 0 2 0xc82 syz-executor 99701 373066 12809 0 2 0xc82 syz-executor 89690 495701 12809 0 3 0x82 wait syz-executor 78147 95697 12809 0 2 0xc82 syz-executor 45332 3911 12809 0 2 0xc82 syz-executor 16096 431432 12809 0 2 0xc82 syz-executor 81588 174004 12809 0 2 0xc82 syz-executor 18135 26718 12809 0 2 0xc82 syz-executor 12809 420688 1 0 3 0x82 kqread syz-executor 39873 229550 1 0 3 0x1000008a kqread sshd 62034 305047 85849 74 2 0x1100092 pflogd 85849 193899 1 0 3 0x80 sbwait pflogd 7670 340763 25523 73 2 0x1100090 syslogd 25523 443539 1 0 3 0x100082 sbwait syslogd 32722 12421 1 0 3 0x100080 kqread resolvd 41151 87069 50527 77 3 0x100092 kqread dhcpleased 55747 40216 50527 77 3 0x100092 kqread dhcpleased 50527 441162 1 0 3 0x80 kqread dhcpleased 66433 104729 0 0 3 0x14200 bored smr 89138 475073 0 0 2 0x14200 zerothread 75993 480137 0 0 3 0x14200 aiodoned aiodoned 94539 491194 0 0 3 0x14200 syncer update 90568 272556 0 0 3 0x14200 cleaner cleaner 41995 73827 0 0 3 0x14200 reaper reaper 23621 180650 0 0 3 0x14200 pgdaemon pagedaemon 64496 374675 0 0 3 0x14200 bored viomb 24131 18567 0 0 3 0x40014200 acpi0 acpi0 81528 346828 0 0 7 0x40014200 idle1 8300 35112 0 0 3 0x14200 bored softnet1 36533 204444 0 0 2 0x14200 softnet0 52041 485863 0 0 3 0x14200 bored systqmp 55240 362406 0 0 3 0x14200 bored systq 63223 218462 0 0 2 0x14200 softclockmp 2380 169338 0 0 3 0x40014200 tmoslp softclock 60265 162224 0 0 3 0x40014200 idle0 1 508187 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 13852 (syz-executor) thread 0xffff8000298a4008 (510028) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff85d533c0) #0 witness_lock+0x632 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x632 sys/kern/subr_witness.c:1160 #1 sysctl_vslock+0x72 sys/kern/kern_sysctl.c:197 #2 kern_sysctl_dirs+0x2d2 sys/kern/kern_sysctl.c:443 #3 kern_sysctl+0x1ce sys/kern/kern_sysctl.c:529 #4 sys_sysctl+0x54f sys/kern/kern_sysctl.c:309 #5 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 #6 Xsyscall+0x128 exclusive rwlock sysctllk r = 0 (0xffffffff84ec60b8) #0 witness_lock+0x632 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x632 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x53e sys/kern/kern_rwlock.c:320 #2 sysctl_vslock+0x37 sys/kern/kern_sysctl.c:192 #3 kern_sysctl_dirs+0x2d2 sys/kern/kern_sysctl.c:443 #4 kern_sysctl+0x1ce sys/kern/kern_sysctl.c:529 #5 sys_sysctl+0x54f sys/kern/kern_sysctl.c:309 #6 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11057 12247K 12485K 166960K 12288 0 pcb 18 28K 30K 166960K 45 0 rtable 241 12K 13K 166960K 355 0 pf 35 22K 23K 166960K 54 0 ifaddr 43 12K 12K 166960K 48 0 ifgroup 55 2K 2K 166960K 64 0 sysctl 3 1K 13K 166960K 7 0 counters 70 42K 43K 166960K 76 0 ioctlops 0 0K 4K 166960K 1493 0 iov 0 0K 16K 166960K 2 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1425 91K 92K 166960K 1550 0 UFS quota 1 36K 36K 166960K 1 0 UFS mount 5 44K 44K 166960K 5 0 shm 3 6K 10K 166960K 10 0 VM map 2 1K 1K 166960K 2 0 sem 6 0K 1K 166960K 7 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1734 201K 292K 166960K 11964 0 file desc 18 65K 97K 166960K 242 0 proc 74 144K 193K 166960K 575 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 10 0 in_multi 99 7K 7K 166960K 99 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 10 0 ISOFS mount 1 36K 36K 166960K 1 0 MSDOSFS mount 1 20K 20K 166960K 1 0 ttys 55 384K 384K 166960K 55 0 exec 0 0K 2K 166960K 388 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 237 209K 242K 166960K 3916 0 UVM aobj 18 4K 4K 166960K 19 0 pinsyscall 38 76K 108K 166960K 1408 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 12 0K 2K 166960K 31 0 temp 41 9162K 9182K 166960K 7182 0 kqueue 13 40K 52K 166960K 47 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 33 0 30 1 0 1 1 0 8 0 rtentry 176 113 0 1 6 0 6 6 0 8 0 unpcb 144 155 0 138 2 0 2 2 0 8 1 syncache 336 4 0 4 2 2 0 1 0 8 0 tcpcb 736 18 0 15 1 0 1 1 0 8 0 arp 136 19 0 0 1 0 1 1 0 8 0 inpcb 328 180 0 169 7 0 7 7 0 8 5 nd6 152 25 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 2 0 2 1 0 1 1 0 8 1 pffrag 232 1 0 0 1 0 1 1 0 482 0 pffrnode 88 1 0 0 1 0 1 1 0 8 0 pffrent 40 2 0 1 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 pftag 88 1 0 0 1 0 1 1 0 8 0 pfqueue 320 1 0 0 1 0 1 1 0 8 0 pfstitem 24 30 0 0 1 0 1 1 0 8 0 pfstkey 128 30 0 0 1 0 1 1 0 8 0 pfstate 448 30 0 0 4 0 4 4 0 8 0 pfrule 1360 22 0 17 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 459 0 0 29 0 29 29 0 8 0 art_table 40 460 0 0 5 0 5 5 0 8 0 art_node 32 113 0 11 1 0 1 1 0 8 0 semapl 72 4 0 0 1 0 1 1 0 8 0 shmpl 112 16 0 1 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1743 0 266 93 0 93 93 0 8 0 ffsino 296 1743 0 266 114 0 114 114 0 8 0 nchpl 144 2098 0 388 64 0 64 64 0 8 0 vnodes 216 2001 0 0 112 0 112 112 0 8 0 namei 1024 6552 0 6552 2 1 1 1 0 8 1 percpumem 16 54 0 3 1 0 1 1 0 8 0 kstatmem 264 33 0 6 3 0 3 3 0 8 1 scxspl 216 7966 0 7966 6 3 3 3 1 8 3 plimitpl 152 36 0 20 1 0 1 1 0 8 0 sigapl 424 561 0 515 7 0 7 7 0 8 1 knotepl 120 99 0 0 3 0 3 3 0 8 0 kqueuepl 224 57 0 48 1 0 1 1 0 8 0 pipepl 344 209 0 182 9 0 9 9 0 8 6 fdescpl 528 545 0 516 3 0 3 3 0 8 0 filepl 160 2519 0 2302 18 0 18 18 0 8 8 lockfpl 104 49 0 47 1 0 1 1 0 8 0 lockfspl 48 23 0 21 1 0 1 1 0 8 0 sessionpl 144 28 0 19 1 0 1 1 0 8 0 pgrppl 48 37 0 20 1 0 1 1 0 8 0 ucredpl 104 217 0 204 1 0 1 1 0 8 0 zombiepl 144 518 0 515 1 0 1 1 0 8 0 processpl 1232 561 0 515 5 0 5 5 0 8 0 procpl 664 732 0 675 6 0 6 6 0 8 1 sosppl 176 2 0 2 1 0 1 1 0 8 1 sockpl 752 369 0 338 11 0 11 11 0 8 6 mcl64k 65536 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 114 0 0 15 0 15 15 0 8 0 mcl2k 2048 13 0 0 2 0 2 2 0 8 0 mextrefs 64 14 0 0 1 0 1 1 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 168 0 0 10 0 10 10 0 8 0 bufpl 272 2646 0 106 170 0 170 170 0 8 0 anonpl 32 3799 0 0 31 0 31 31 0 222 0 amapchunkpl 152 11185 0 10670 22 1 21 21 0 158 0 amappl16 200 1948 0 1920 6 3 3 5 0 8 1 amappl15 192 32 0 32 2 2 0 1 0 8 0 amappl14 184 458 0 458 1 0 1 1 0 8 1 amappl13 176 129 0 119 1 0 1 1 0 8 0 amappl12 168 812 0 784 2 0 2 2 0 8 0 amappl11 160 2 0 2 1 1 0 1 0 8 0 amappl10 152 86 0 71 1 0 1 1 0 8 0 amappl9 144 275 0 275 1 1 0 1 0 8 0 amappl8 136 103 0 101 1 0 1 1 0 8 0 amappl7 128 153 0 141 1 0 1 1 0 8 0 amappl6 120 162 0 162 1 0 1 1 0 8 1 amappl5 112 107 0 99 1 0 1 1 0 8 0 amappl4 104 316 0 296 1 0 1 1 0 8 0 amappl3 96 2169 0 2046 4 0 4 4 0 8 0 amappl2 88 554 0 503 2 0 2 2 0 8 0 amappl1 80 11261 0 10817 15 0 15 15 0 8 4 amappl 88 3163 0 2993 4 0 4 4 0 92 0 uvmvnodes 80 104 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 18 0 1 1 0 1 1 0 8 0 uaddrrnd 24 545 0 516 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 545 0 516 1 0 1 1 0 8 0 vmmpekpl 168 6893 0 6859 3 0 3 3 0 8 0 vmmpepl 168 44470 0 42782 88 1 87 87 0 357 7 vmsppl 488 544 0 516 5 0 5 5 0 8 1 rwobjpl 80 16145 0 15198 25 0 25 25 0 8 1 pdppl 4096 1099 0 1032 103 34 69 89 0 8 2 pvpl 32 10047 0 0 82 0 82 82 0 265 0 pmappl 256 544 0 516 3 0 3 3 0 8 0 extentpl 40 46 0 28 1 0 1 1 0 8 0 phpool 112 445 0 40 12 0 12 12 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(ffffffff846334c7) at panic+0x270 sys/kern/subr_prf.c:198 kasan_memcpy(ffff800001ba1e18,ffff800001b9eee0,68) at kasan_memcpy+0x1ec sysctl_sysvipc(ffff80003bb73ea8,1,200000000180,ffff80003bb73e80) at sysctl_sysvipc+0x422 sys/kern/kern_sysctl.c:2777 kern_sysctl_dirs(33,ffff80003bb73ea8,1,200000000180,ffff80003bb73e80,0,1,1ffff0000776e74c) at kern_sysctl_dirs+0x407 sys/kern/kern_sysctl.c:445 kern_sysctl(ffff80003bb73ea4,2,200000000180,ffff80003bb73e80,0,fffa,ffff80003bb740f0) at kern_sysctl+0x1ce sys/kern/kern_sysctl.c:529 sys_sysctl(ffff8000298a4008,ffff80003bb740f0,ffff80003bb74060) at sys_sysctl+0x54f sys/kern/kern_sysctl.c:309 syscall(ffff80003bb740f0) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003bb740f0) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x638d065d220, 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}>