panic: malloc: allocation too large, type = 2, size = 1768304430 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 273040 7432 0 0 0 1 syz-executor *361496 7432 0 0 0x4000000 0K syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830a5007) at panic+0x1e5 sys/kern/subr_prf.c:198 malloc(69662f2e,2,2) at malloc+0xcf4 sys/kern/kern_malloc.c:334 bpf_allocbufs(ffff800001437600) at bpf_allocbufs+0x85 sys/net/bpf.c:1659 bpf_setif(ffff800001437600,ffff80003c59a950) at bpf_setif+0x17d sys/net/bpf.c:1201 bpfioctl(31700,8020426c,ffff80003c59a950,1,ffff8000ffff67c0) at bpfioctl+0xd2a sys/net/bpf.c:955 VOP_IOCTL(fffffd806b2be6c0,8020426c,ffff80003c59a950,1,fffffd807f7d3478,ffff8000ffff67c0) at VOP_IOCTL+0xac sys/kern/vfs_vops.c:264 vn_ioctl(fffffd805e038998,8020426c,ffff80003c59a950,ffff8000ffff67c0) at vn_ioctl+0xf8 sys/kern/vfs_vnops.c:531 sys_ioctl(ffff8000ffff67c0,ffff80003c59ab30,ffff80003c59aa80) at sys_ioctl+0x5c3 syscall(ffff80003c59ab30) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c59ab30) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf945535f5a0, count: 4 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: malloc: allocation too large, type = 2, size = 1768304430 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830a5007) at panic+0x1e5 sys/kern/subr_prf.c:198 malloc(69662f2e,2,2) at malloc+0xcf4 sys/kern/kern_malloc.c:334 bpf_allocbufs(ffff800001437600) at bpf_allocbufs+0x85 sys/net/bpf.c:1659 bpf_setif(ffff800001437600,ffff80003c59a950) at bpf_setif+0x17d sys/net/bpf.c:1201 bpfioctl(31700,8020426c,ffff80003c59a950,1,ffff8000ffff67c0) at bpfioctl+0xd2a sys/net/bpf.c:955 VOP_IOCTL(fffffd806b2be6c0,8020426c,ffff80003c59a950,1,fffffd807f7d3478,ffff8000ffff67c0) at VOP_IOCTL+0xac sys/kern/vfs_vops.c:264 vn_ioctl(fffffd805e038998,8020426c,ffff80003c59a950,ffff8000ffff67c0) at vn_ioctl+0xf8 sys/kern/vfs_vnops.c:531 sys_ioctl(ffff8000ffff67c0,ffff80003c59ab30,ffff80003c59aa80) at sys_ioctl+0x5c3 syscall(ffff80003c59ab30) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c59ab30) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf945535f5a0, count: -11 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80003c59a4d0 rbx 0xffffffff834e4dc7 cpu_info_full_primary+0x2dc7 rdx 0xffff80000002a740 rcx 0xffff8000ffff67c0 rax 0xffffffff834e3ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xb6c315cdff9df349 r11 0xd257884afcd61d46 r12 0xffffffff834e4bc8 cpu_info_full_primary+0x2bc8 r13 0 r14 0 r15 0x1 rip 0xffffffff8239cdf5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c59a4c0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=361496 pid=7432 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffff6cd0,0xffffffff8367c150 process=0xffff80003c59b020 user=0xffff80003c595000, vmspace=0xfffffd80680e33b8 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 7432 273040 10141 0 7 0 syz-executor * 7432 361496 10141 0 7 0x4000000 syz-executor 64818 273604 65361 0 3 0x80 nanoslp syz-executor 64818 114689 65361 0 3 0x4000080 sbwait syz-executor 64818 436853 65361 0 3 0x4000080 fsleep syz-executor 28439 311276 56883 0 3 0x90 nanoslp syz-executor 28439 91058 56883 0 3 0x4000090 kqsel syz-executor 77575 385170 0 0 3 0x14200 acct acct 33624 14162 1 0 3 0x100083 ttyin getty 95850 163352 0 0 3 0x14200 bored sosplice 19881 34667 67746 0 3 0x82 nanoslp syz-executor 3406 111302 67746 0 3 0x82 wait syz-executor 62130 159033 67746 0 3 0x82 nanoslp syz-executor 56883 57575 67746 0 3 0x82 nanoslp syz-executor 31518 515264 67746 0 3 0x82 wait syz-executor 65361 59279 67746 0 3 0x82 nanoslp syz-executor 97968 266417 67746 0 3 0x82 wait syz-executor 10141 4490 67746 0 3 0x82 nanoslp syz-executor 67746 263379 53688 0 3 0x82 kqread syz-executor 53688 463888 39612 0 3 0x10008a sigsusp ksh 39612 170853 70047 0 3 0x98 kqread sshd-session 70047 353113 9711 0 3 0x92 kqread sshd-session 9711 89675 1 0 3 0x88 kqread sshd 21446 165265 79686 74 3 0x1100092 bpf pflogd 79686 316501 1 0 3 0x80 sbwait pflogd 31415 123996 52986 73 3 0x1100090 kqread syslogd 52986 336753 1 0 3 0x100082 sbwait syslogd 28778 515279 1 0 3 0x100080 kqread resolvd 11399 381596 94318 77 3 0x100092 kqread dhcpleased 80545 8080 94318 77 3 0x100092 kqread dhcpleased 94318 216122 1 0 3 0x80 kqread dhcpleased 2690 154837 0 0 3 0x14200 bored smr 49359 251493 0 0 3 0x14200 pgzero zerothread 60499 423241 0 0 3 0x14200 aiodoned aiodoned 55348 419771 0 0 3 0x14200 syncer update 60558 351581 0 0 3 0x14200 cleaner cleaner 13746 283619 0 0 3 0x14200 reaper reaper 84182 101996 0 0 3 0x14200 pgdaemon pagedaemon 58624 511165 0 0 3 0x14200 bored viomb 32857 281315 0 0 3 0x40014200 acpi0 acpi0 88748 274165 0 0 3 0x40014200 idle1 74628 428500 0 0 3 0x14200 bored softnet3 74604 269213 0 0 3 0x14200 bored softnet2 12733 305983 0 0 3 0x14200 bored softnet1 97576 359584 0 0 3 0x14200 bored softnet0 87397 518382 0 0 3 0x14200 bored systqmp 57371 398463 0 0 3 0x14200 bored systq 90746 470165 0 0 3 0x14200 tmoslp softclockmp 72526 100974 0 0 3 0x40014200 tmoslp softclock 79431 322095 0 0 3 0x40014200 idle0 1 357902 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &bd->bd_mtx r = 0 (0xffff800001437618) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 mtx_enter_try+0x178 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 bpf_setif+0x97 sys/net/bpf.c:1200 #4 bpfioctl+0xd2a sys/net/bpf.c:955 #5 VOP_IOCTL+0xac sys/kern/vfs_vops.c:264 #6 vn_ioctl+0xf8 sys/kern/vfs_vnops.c:531 #7 sys_ioctl+0x5c3 #8 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 Process 7432 (syz-executor) thread 0xffff8000ffff67c0 (361496) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff836710f8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 vn_ioctl+0x4d sys/kern/vfs_vnops.c:514 #2 sys_ioctl+0x5c3 #3 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #3 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #4 Xsyscall+0x128 exclusive mutex &bd->bd_mtx r = 0 (0xffff800001437618) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 mtx_enter_try+0x178 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 bpf_setif+0x97 sys/net/bpf.c:1200 #4 bpfioctl+0xd2a sys/net/bpf.c:955 #5 VOP_IOCTL+0xac sys/kern/vfs_vops.c:264 #6 vn_ioctl+0xf8 sys/kern/vfs_vnops.c:531 #7 sys_ioctl+0x5c3 #8 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10221 11029K 12475K 166960K 13373 0 pcb 17 17K 18K 166960K 286 0 rtable 210 7K 8K 166960K 456 0 pf 35 17K 25K 166960K 108 0 ifaddr 38 6K 7K 166960K 60 0 ifgroup 54 2K 2K 166960K 82 0 sysctl 4 1K 1K 166960K 4 0 counters 62 36K 36K 166960K 82 0 ioctlops 0 0K 4K 166960K 1658 0 iov 1 4K 20K 166960K 59 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1489 94K 94K 166960K 2521 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 15 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 120 0 dirhash 12 2K 3K 166960K 30 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 18 65K 93K 166960K 1242 0 sigio 0 0K 0K 166960K 20 0 proc 72 91K 128K 166960K 665 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 256 0 in_multi 87 6K 7K 166960K 151 0 ether_multi 1 0K 0K 166960K 10 0 mrt 0 0K 0K 166960K 4 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 229 1023K 1023K 166960K 229 0 exec 0 0K 1K 166960K 512 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 240 74K 78K 166960K 13158 0 UVM aobj 23 2K 2K 166960K 25 0 pinsyscall 43 86K 103K 166960K 2369 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 69 0 NDP 11 0K 2K 166960K 40 0 temp 66 6896K 6974K 166960K 89045 0 kqueue 13 20K 28K 166960K 198 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 24 0 0 1 0 1 1 0 8 0 rtpcb 120 105 0 101 1 0 1 1 0 8 0 rtentry 112 131 0 38 4 0 4 4 0 8 0 unpcb 144 1093 0 1074 9 4 5 5 0 8 4 syncache 336 13 0 13 4 3 1 1 0 8 1 tcpqe 32 4 0 4 4 4 0 1 0 8 0 tcpcb 808 408 0 400 13 8 5 7 0 8 4 arp 120 21 0 6 1 0 1 1 0 8 0 inpcb 376 1516 0 1505 23 15 8 14 0 8 5 nd6 136 29 0 4 1 0 1 1 0 8 0 pkpcb 40 8 0 8 3 2 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1168 7 0 7 3 3 0 1 0 8 0 pffrag 232 9 0 3 1 0 1 1 0 482 0 pffrnode 88 8 0 3 1 0 1 1 0 8 0 pffrent 40 14 0 8 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 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 101 0 30 1 0 1 1 0 8 0 pfstkey 128 103 0 32 3 0 3 3 0 8 0 pfstate 376 102 0 31 8 0 8 8 0 8 0 pfrule 1344 42 0 35 2 1 1 2 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 583 0 147 32 3 29 32 0 8 0 art_table 32 586 0 147 5 1 4 5 0 8 0 art_node 16 128 0 47 1 0 1 1 0 8 0 sysvmsgpl 40 10 0 10 3 2 1 1 0 8 1 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 118 0 108 1 0 1 1 0 8 0 shmpl 112 22 0 2 1 0 1 1 0 8 0 dirhash 1024 29 0 12 3 0 3 3 0 8 0 dino2pl 256 3594 0 2091 95 0 95 95 0 8 0 ffsino 280 3594 0 2091 109 0 109 109 0 8 0 nchpl 144 5378 0 3696 63 0 63 63 0 8 0 uvmvnodes 80 4453 0 0 91 0 91 91 0 8 0 vnodes 216 4453 0 0 248 0 248 248 0 8 0 namei 1024 19424 0 19424 1 0 1 1 0 8 1 percpumem 16 55 0 10 1 0 1 1 0 8 0 kstatmem 264 42 0 20 2 0 2 2 0 8 0 scsiplug 72 4 0 4 4 3 1 1 0 8 1 scxspl 216 18016 0 18016 14 11 3 8 1 8 3 plimitpl 152 254 0 237 1 0 1 1 0 8 0 sigapl 424 1554 0 1502 8 2 6 7 0 8 0 futexpl 64 19593 0 19592 1 0 1 1 0 8 0 knotepl 120 612 0 0 18 0 18 18 0 8 0 kqueuepl 216 500 0 490 7 4 3 5 0 8 2 pipepl 328 309 0 282 11 5 6 8 0 8 3 fdescpl 504 1532 0 1500 5 0 5 5 0 8 0 filepl 152 11108 0 10886 29 12 17 17 0 8 7 lockfpl 104 558 0 556 2 1 1 2 0 8 0 lockfspl 48 175 0 173 1 0 1 1 0 8 0 sessionpl 144 32 0 23 1 0 1 1 0 8 0 pgrppl 48 61 0 44 1 0 1 1 0 8 0 ucredpl 104 1734 0 1717 1 0 1 1 0 8 0 zombiepl 144 1507 0 1502 1 0 1 1 0 8 0 processpl 1168 1554 0 1502 5 1 4 5 0 8 0 procpl 648 3304 0 3248 7 1 6 6 0 8 0 srpgc 96 2 0 2 1 1 0 1 0 8 0 sosppl 168 3 0 3 2 2 0 1 0 8 0 sockpl 688 2743 0 2709 28 15 13 15 0 8 8 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 8 0 0 1 0 1 1 0 8 0 mcl4k 4096 114 0 0 15 0 15 15 0 8 0 mcl2k 2048 22 0 0 3 0 3 3 0 8 0 mtagpl 96 67 0 0 2 0 2 2 0 8 0 mbufpl 256 269 0 0 17 0 17 17 0 8 0 bufpl 280 5792 0 135 405 0 405 405 0 8 0 anonpl 24 247108 0 233598 117 12 105 105 0 185 1 amapchunkpl 152 42072 0 41412 37 6 31 31 0 158 4 amappl16 200 6390 0 5847 60 18 42 42 0 8 0 amappl15 192 4 0 4 1 1 0 1 0 8 0 amappl14 184 128 0 116 1 0 1 1 0 8 0 amappl13 176 1 0 1 1 1 0 1 0 8 0 amappl12 168 2185 0 2153 3 1 2 2 0 8 0 amappl11 160 115 0 101 1 0 1 1 0 8 0 amappl10 152 14 0 14 1 1 0 1 0 8 0 amappl9 144 247 0 247 1 1 0 1 0 8 0 amappl8 136 23 0 20 1 0 1 1 0 8 0 amappl7 128 115 0 103 1 0 1 1 0 8 0 amappl6 120 187 0 184 1 0 1 1 0 8 0 amappl5 112 144 0 135 1 0 1 1 0 8 0 amappl4 104 359 0 339 1 0 1 1 0 8 0 amappl3 96 8663 0 8545 4 0 4 4 0 8 0 amappl2 88 740 0 676 2 0 2 2 0 8 0 amappl1 80 13426 0 12854 14 0 14 14 0 8 0 amappl 88 12668 0 12483 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 128 256 0 256 4 3 1 1 0 8 1 dma64 64 7 0 7 2 2 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 24 0 2 1 0 1 1 0 8 0 uaddrrnd 24 1532 0 1500 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1532 0 1500 1 0 1 1 0 8 0 vmmpekpl 168 14395 0 14364 2 0 2 2 0 8 0 vmmpepl 168 102168 0 99725 128 11 117 117 0 357 0 vmsppl 456 1531 0 1500 6 1 5 5 0 8 0 rwobjpl 64 34504 0 28575 96 0 96 96 0 8 0 pdppl 4096 3071 0 3000 109 36 73 85 0 8 2 pvpl 32 25625 0 0 208 1 207 207 0 265 0 pmappl 248 1531 0 1500 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 314 0 56 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830a5007) at panic+0x1e5 sys/kern/subr_prf.c:198 malloc(69662f2e,2,2) at malloc+0xcf4 sys/kern/kern_malloc.c:334 bpf_allocbufs(ffff800001437600) at bpf_allocbufs+0x85 sys/net/bpf.c:1659 bpf_setif(ffff800001437600,ffff80003c59a950) at bpf_setif+0x17d sys/net/bpf.c:1201 bpfioctl(31700,8020426c,ffff80003c59a950,1,ffff8000ffff67c0) at bpfioctl+0xd2a sys/net/bpf.c:955 VOP_IOCTL(fffffd806b2be6c0,8020426c,ffff80003c59a950,1,fffffd807f7d3478,ffff8000ffff67c0) at VOP_IOCTL+0xac sys/kern/vfs_vops.c:264 vn_ioctl(fffffd805e038998,8020426c,ffff80003c59a950,ffff8000ffff67c0) at vn_ioctl+0xf8 sys/kern/vfs_vnops.c:531 sys_ioctl(ffff8000ffff67c0,ffff80003c59ab30,ffff80003c59aa80) at sys_ioctl+0x5c3 syscall(ffff80003c59ab30) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c59ab30) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf945535f5a0, count: -11 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff800029b5bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 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: 0x7e6797526720, count: 12 ddb{1}> trace x86_ipi_db(ffff800029b5bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 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: 0x7e6797526720, count: -3