panic: lock (rwlock) solock not locked Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 10360 93417 0 0 0 0 syz-executor.5 * 78399 93417 0 0 0x4000000 1K syz-executor.5 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82583901) at panic+0x177 sys/kern/subr_prf.c:198 witness_assert(fffffd806f394020,4) at witness_assert+0x3ef sys/kern/subr_witness.c:1950 somove(fffffd806d7487b8,1) at somove+0x25d sbspace sys/sys/socketvar.h:209 [inline] somove(fffffd806d7487b8,1) at somove+0x25d sys/kern/uipc_socket.c:1487 sosplice(fffffd806d7487b8,5,0,fffffd8008790010) at sosplice+0x50b sys/kern/uipc_socket.c:1346 sosetopt(fffffd806d7487b8,ffff,1023,fffffd8068ea3b00) at sosetopt+0x7f4 sys_setsockopt(ffff800021311a48,ffff800021308b28,ffff800021308b70) at sys_setsockopt+0x1f6 sys/kern/uipc_syscalls.c:1233 syscall(ffff800021308bf0) at syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff800021308bf0) at syscall+0x435 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6800e237d0, 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: lock (rwlock) solock not locked ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82583901) at panic+0x177 sys/kern/subr_prf.c:198 witness_assert(fffffd806f394020,4) at witness_assert+0x3ef sys/kern/subr_witness.c:1950 somove(fffffd806d7487b8,1) at somove+0x25d sbspace sys/sys/socketvar.h:209 [inline] somove(fffffd806d7487b8,1) at somove+0x25d sys/kern/uipc_socket.c:1487 sosplice(fffffd806d7487b8,5,0,fffffd8008790010) at sosplice+0x50b sys/kern/uipc_socket.c:1346 sosetopt(fffffd806d7487b8,ffff,1023,fffffd8068ea3b00) at sosetopt+0x7f4 sys_setsockopt(ffff800021311a48,ffff800021308b28,ffff800021308b70) at sys_setsockopt+0x1f6 sys/kern/uipc_syscalls.c:1233 syscall(ffff800021308bf0) at syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff800021308bf0) at syscall+0x435 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6800e237d0, count: -9 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800021308820 rbx 0xffff800020dd9b8f rdx 0 rcx 0 rax 0xffff800021311a48 r8 0x101010101010101 r9 0x8080808080808080 r10 0x3f52decf81bdc219 r11 0x531fe79624925651 r12 0xffff800020dd9990 r13 0 r14 0 r15 0x1 rip 0xffffffff81f03e68 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800021308810 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.5) pid=78399 stat=onproc flags process=0 proc=4000000 pri=83, usrpri=83, nice=20 forw=0xffffffffffffffff, list=0xffff8000212b1268,0xffff8000213117b8 process=0xffff8000fffedd38 user=0xffff800021303000, vmspace=0xfffffd80087528a0 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 93417 10360 14438 0 7 0 syz-executor.5 *93417 78399 14438 0 7 0x4000000 syz-executor.5 93417 176558 14438 0 2 0x4000000 syz-executor.5 93417 34488 14438 0 2 0x4000000 syz-executor.5 14674 373539 55562 0 2 0 syz-executor.2 74637 453340 90560 0 3 0x80 nanoslp syz-executor.7 74637 122941 90560 0 3 0x4000080 kqread syz-executor.7 74637 352367 90560 0 3 0x4000080 fsleep syz-executor.7 96567 175731 50841 0 3 0x2 biowait syz-executor.1 62320 59757 50841 0 3 0x82 piperd syz-executor.0 5274 371177 0 0 3 0x14280 nfsidl nfsio 59058 192554 0 0 3 0x14280 nfsidl nfsio 48772 124535 0 0 3 0x14280 nfsidl nfsio 94430 174870 0 0 3 0x14280 nfsidl nfsio 62937 432526 0 0 3 0x14280 nfsidl nfsio 95829 410843 0 0 3 0x14280 nfsidl nfsio 70731 416975 0 0 3 0x14280 nfsidl nfsio 72453 438457 0 0 3 0x14280 nfsidl nfsio 37808 417775 0 0 3 0x14280 nfsidl nfsio 11816 356800 0 0 3 0x14280 nfsidl nfsio 49694 16049 0 0 3 0x14280 nfsidl nfsio 56325 84185 0 0 3 0x14280 nfsidl nfsio 75546 24015 0 0 3 0x14280 nfsidl nfsio 62448 145684 0 0 3 0x14280 nfsidl nfsio 60346 396599 0 0 3 0x14280 nfsidl nfsio 46661 109761 0 0 3 0x14280 nfsidl nfsio 86760 264892 0 0 3 0x14280 nfsidl nfsio 94611 345364 0 0 3 0x14280 nfsidl nfsio 91267 452673 0 0 3 0x14280 nfsidl nfsio 61390 455745 0 0 3 0x14280 nfsidl nfsio 55562 375196 50841 0 3 0x82 nanoslp syz-executor.2 63246 94219 0 0 3 0x14200 bored sosplice 90560 431921 50841 0 3 0x82 nanoslp syz-executor.7 14438 272102 50841 0 3 0x82 nanoslp syz-executor.5 64732 171892 50841 0 2 0x2 syz-executor.6 7201 253585 50841 0 2 0x2 syz-executor.4 38044 61731 50841 0 3 0x82 piperd syz-executor.3 50841 312720 36547 0 3 0x82 thrsleep syz-fuzzer 50841 516978 36547 0 3 0x4000082 thrsleep syz-fuzzer 50841 209690 36547 0 3 0x4000082 thrsleep syz-fuzzer 50841 463679 36547 0 3 0x4000082 wait syz-fuzzer 50841 87304 36547 0 3 0x4000082 wait syz-fuzzer 50841 290902 36547 0 3 0x4000082 wait syz-fuzzer 50841 419228 36547 0 3 0x4000082 wait syz-fuzzer 50841 207620 36547 0 3 0x4000082 thrsleep syz-fuzzer 50841 455615 36547 0 3 0x4000082 wait syz-fuzzer 50841 497785 36547 0 3 0x4000082 wait syz-fuzzer 50841 237633 36547 0 3 0x4000082 wait syz-fuzzer 50841 90433 36547 0 3 0x4000082 wait syz-fuzzer 50841 374568 36547 0 3 0x4000082 thrsleep syz-fuzzer 50841 345818 36547 0 3 0x4000082 thrsleep syz-fuzzer 50841 117936 36547 0 3 0x4000082 kqread syz-fuzzer 50841 246918 36547 0 3 0x4000082 thrsleep syz-fuzzer 36547 235821 9096 0 3 0x10008a sigsusp ksh 9096 306680 20049 0 3 0x9a kqread sshd 46091 496432 1 0 3 0x100083 ttyin getty 20049 18732 1 0 3 0x88 kqread sshd 94180 150565 26792 74 3 0x1100092 bpf pflogd 26792 247636 1 0 3 0x80 netio pflogd 37621 70489 56421 73 3 0x1100090 kqread syslogd 56421 144507 1 0 3 0x100082 netio syslogd 88539 247165 1 0 3 0x100080 kqread resolvd 18022 473557 6758 77 3 0x100092 kqread dhcpleased 40519 25823 6758 77 3 0x100092 kqread dhcpleased 6758 352193 1 0 3 0x80 kqread dhcpleased 89348 408319 0 0 3 0x14200 bored smr 78514 227037 0 0 2 0x14200 zerothread 51366 278355 0 0 3 0x14200 aiodoned aiodoned 92977 296728 0 0 3 0x14200 syncer update 43684 277087 0 0 3 0x14200 cleaner cleaner 984 449354 0 0 3 0x14200 reaper reaper 96171 6098 0 0 3 0x14200 pgdaemon pagedaemon 83992 279242 0 0 3 0x14200 bored viomb 82304 375394 0 0 3 0x40014200 acpi0 acpi0 43177 140119 0 0 3 0x40014200 idle1 51298 237393 0 0 3 0x14200 bored softnet 63943 523920 0 0 3 0x14200 bored softnet 55093 29666 0 0 3 0x14200 bored softnet 42026 9920 0 0 3 0x14200 bored softnet 54322 248709 0 0 3 0x14200 bored systqmp 86088 487606 0 0 3 0x14200 bored systq 95024 246474 0 0 3 0x40014200 bored softclock 66687 431965 0 0 3 0x40014200 idle0 1 30288 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 93417 (syz-executor.5) thread 0xffff800021311a48 (78399) exclusive rwlock netlock r = 0 (0xffffffff82991290) #0 witness_lock+0x44d #1 sys_setsockopt+0x1de sys/kern/uipc_syscalls.c:1233 #2 syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] #2 syscall+0x435 sys/arch/amd64/amd64/trap.c:585 #3 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff829ee950) #0 witness_lock+0x44d #1 syscall+0x41d mi_syscall sys/sys/syscall_mi.h:100 [inline] #1 syscall+0x41d sys/arch/amd64/amd64/trap.c:585 #2 Xsyscall+0x128 Process 96567 (syz-executor.1) thread 0xffff800021310008 (175731) exclusive rrwlock inode r = 0 (0xfffffd8067e800a8) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:518 #4 ufs_ihashins+0x42 sys/ufs/ufs/ufs_ihash.c:140 #5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1353 #6 ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394 #7 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1150 #8 VOP_MKDIR+0xbf sys/kern/vfs_vops.c:388 #9 domkdirat+0x121 sys/kern/vfs_syscalls.c:3112 #10 syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] #10 syscall+0x435 sys/arch/amd64/amd64/trap.c:585 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806ea48f80) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0xd1 sys/kern/vfs_lookup.c:412 #6 namei+0x36a sys/kern/vfs_lookup.c:244 #7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3097 #8 syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] #8 syscall+0x435 sys/arch/amd64/amd64/trap.c:585 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10206 6613K 6874K 78643K 13612 0 pcb 13 12K 13K 78643K 199 0 rtable 216 12K 13K 78643K 619 0 ifaddr 87 17K 19K 78643K 214 0 sysctl 2 0K 0K 78643K 2 0 counters 54 35K 36K 78643K 86 0 ioctlops 0 0K 4K 78643K 1839 0 iov 0 0K 24K 78643K 217 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1337 84K 84K 78643K 2079 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 10 0 VM map 2 1K 1K 78643K 2 0 sem 10 1K 1K 78643K 10 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 13 45K 89K 78643K 1596 0 sigio 0 0K 0K 78643K 232 0 proc 71 91K 128K 78643K 672 0 subproc 104 6K 6K 78643K 156 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 63 0 in_multi 88 5K 6K 78643K 206 0 ether_multi 1 0K 0K 78643K 14 0 mrt 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 85 387K 387K 78643K 85 0 exec 0 0K 2K 78643K 857 0 tdb 3 0K 0K 78643K 3 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 8 62K 64K 78643K 10 0 UVM amap 271 88K 89K 78643K 11326 0 UVM aobj 51 3K 3K 78643K 51 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 47 0 NDP 12 0K 2K 78643K 58 0 temp 129 4722K 5746K 78643K 18638 0 kqueue 14 22K 24K 78643K 142 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 135 0 132 2 1 1 2 0 8 0 rtentry 112 179 0 89 4 0 4 4 0 8 0 unpcb 144 2924 0 2903 22 16 6 8 0 8 5 syncache 296 10 0 10 3 2 1 1 0 8 1 tcpqe 32 152 0 152 1 1 0 1 0 8 0 tcpcb 768 384 0 363 17 14 3 14 0 8 0 arp 120 26 0 10 1 0 1 1 0 8 0 inpcb 368 1011 0 1002 16 12 4 7 0 8 3 nd6 48 43 0 23 1 0 1 1 0 8 0 pkpcb 40 3 0 3 1 1 0 1 0 8 0 kcovpl 48 12 0 4 1 0 1 1 0 8 0 ppxss 1256 4 0 4 1 1 0 1 0 8 0 pfstscr 40 4 0 3 1 0 1 1 0 8 0 pffrag 232 7 0 5 1 0 1 1 0 482 0 pffrnode 88 7 0 5 1 0 1 1 0 8 0 pffrent 40 79 0 77 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 pfrktable 1344 33 0 25 2 1 1 1 0 8 0 pfanchor 1280 28 0 27 2 1 1 1 0 8 0 pftag 88 5 0 3 2 1 1 1 0 8 0 pfstitem 24 22 0 17 1 0 1 1 0 8 0 pfstkey 120 28 0 23 1 0 1 1 0 8 0 pfstate 336 24 0 20 2 1 1 2 0 8 0 pfrule 1360 51 0 32 3 1 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 833 0 446 35 6 29 30 0 8 1 art_table 32 834 0 446 4 0 4 4 0 8 0 art_node 16 178 0 99 1 0 1 1 0 8 0 semapl 112 8 0 0 1 0 1 1 0 8 0 shmpl 112 48 0 0 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 3418 0 1980 91 0 91 91 0 8 0 ffsino 272 3418 0 1980 97 0 97 97 0 8 0 nchpl 144 5913 0 4274 63 0 63 63 0 8 0 uvmvnodes 80 4029 0 0 83 0 83 83 0 8 0 vnodes 216 4029 0 0 224 0 224 224 0 8 0 namei 1024 21211 0 21210 3 2 1 2 0 8 0 percpumem 16 55 0 16 1 0 1 1 0 8 0 pfiaddrpl 120 15 0 6 2 1 1 1 0 8 0 kstatmem 264 56 0 32 2 0 2 2 0 8 0 scsiplug 72 3 0 3 1 0 1 1 0 8 1 scxspl 216 15211 0 15210 10 9 1 8 0 8 0 plimitpl 152 93 0 78 1 0 1 1 0 8 0 sigapl 424 1926 0 1861 10 2 8 8 0 8 0 futexpl 64 12605 0 12604 1 0 1 1 0 8 0 knotepl 120 512 0 0 15 0 15 15 0 8 0 kqueuepl 216 494 0 484 16 15 1 12 0 8 0 pipepl 320 517 0 489 12 5 7 8 0 8 4 fdescpl 496 1888 0 1862 5 1 4 5 0 8 0 filepl 152 13671 0 13425 40 22 18 21 0 8 8 lockfpl 104 129 0 127 1 0 1 1 0 8 0 lockfspl 48 60 0 58 1 0 1 1 0 8 0 sessionpl 144 28 0 11 1 0 1 1 0 8 0 pgrppl 48 28 0 11 1 0 1 1 0 8 0 ucredpl 104 1467 0 1455 1 0 1 1 0 8 0 zombiepl 144 1862 0 1861 2 1 1 1 0 8 0 processpl 1064 1926 0 1861 5 0 5 5 0 8 0 procpl 672 4918 0 4833 12 3 9 9 0 8 1 srpgc 96 6 0 6 3 2 1 1 0 8 1 sosppl 168 18 0 16 3 2 1 1 0 8 0 sockpl 488 4073 0 4040 105 85 20 28 0 8 15 mcl64k 65536 13 0 0 2 0 2 2 0 8 0 mcl16k 16384 6 0 0 1 0 1 1 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 15 0 0 2 0 2 2 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 326 0 0 40 0 40 40 0 8 0 mtagpl 96 410 0 0 10 0 10 10 0 8 0 mbufpl 256 694 0 0 41 0 41 41 0 8 0 bufpl 288 5347 0 144 372 0 372 372 0 8 0 anonpl 24 346695 0 330506 117 7 110 110 0 186 0 amapchunkpl 152 30579 0 29856 43 11 32 35 0 158 0 amappl16 200 4192 0 3685 41 5 36 38 0 8 7 amappl15 192 351 0 344 1 0 1 1 0 8 0 amappl14 184 227 0 220 1 0 1 1 0 8 0 amappl13 176 106 0 104 1 0 1 1 0 8 0 amappl12 168 345 0 338 1 0 1 1 0 8 0 amappl11 160 313 0 292 1 0 1 1 0 8 0 amappl10 152 18 0 15 1 0 1 1 0 8 0 amappl9 144 968 0 962 1 0 1 1 0 8 0 amappl8 136 872 0 804 4 1 3 3 0 8 0 amappl7 128 319 0 298 1 0 1 1 0 8 0 amappl6 120 707 0 693 2 1 1 2 0 8 0 amappl5 112 1081 0 1066 1 0 1 1 0 8 0 amappl4 104 1450 0 1418 2 1 1 2 0 8 0 amappl3 96 5435 0 5385 2 0 2 2 0 8 0 amappl2 88 758 0 722 2 0 2 2 0 8 0 amappl1 80 48627 0 48001 21 5 16 20 0 8 0 amappl 88 10756 0 10573 6 1 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 128 253 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 50 0 0 1 0 1 1 0 8 0 uaddrrnd 24 1889 0 1863 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1889 0 1863 1 0 1 1 0 8 0 vmmpekpl 168 19786 0 19739 3 0 3 3 0 8 0 vmmpepl 168 186315 0 183976 168 44 124 155 0 357 3 vmsppl 368 1888 0 1863 4 1 3 4 0 8 0 rwobjpl 56 50992 0 45374 82 1 81 81 0 8 0 pdppl 4096 3785 0 3726 191 122 69 81 0 8 10 pvpl 32 782114 0 761717 276 94 182 258 0 265 0 pmappl 248 1888 0 1863 3 1 2 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 911 0 148 22 0 22 22 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff8296bff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff829ee748) at __mp_lock+0x129 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff829ee748) at __mp_lock+0x129 sys/kern/kern_lock.c:147 intr_handler(ffff80002e4740c0,ffff80000004bd00) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge21_untramp() at Xintr_ioapic_edge21_untramp+0x18f end of kernel end trace frame: 0x7f7ffffd6cd0, count: 9 ddb{0}> trace x86_ipi_db(ffffffff8296bff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff829ee748) at __mp_lock+0x129 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff829ee748) at __mp_lock+0x129 sys/kern/kern_lock.c:147 intr_handler(ffff80002e4740c0,ffff80000004bd00) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge21_untramp() at Xintr_ioapic_edge21_untramp+0x18f end of kernel end trace frame: 0x7f7ffffd6cd0, count: -6 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x18: addq $0x8,%rsp db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82583901) at panic+0x177 sys/kern/subr_prf.c:198 witness_assert(fffffd806f394020,4) at witness_assert+0x3ef sys/kern/subr_witness.c:1950 somove(fffffd806d7487b8,1) at somove+0x25d sbspace sys/sys/socketvar.h:209 [inline] somove(fffffd806d7487b8,1) at somove+0x25d sys/kern/uipc_socket.c:1487 sosplice(fffffd806d7487b8,5,0,fffffd8008790010) at sosplice+0x50b sys/kern/uipc_socket.c:1346 sosetopt(fffffd806d7487b8,ffff,1023,fffffd8068ea3b00) at sosetopt+0x7f4 sys_setsockopt(ffff800021311a48,ffff800021308b28,ffff800021308b70) at sys_setsockopt+0x1f6 sys/kern/uipc_syscalls.c:1233 syscall(ffff800021308bf0) at syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff800021308bf0) at syscall+0x435 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6800e237d0, count: 6 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82583901) at panic+0x177 sys/kern/subr_prf.c:198 witness_assert(fffffd806f394020,4) at witness_assert+0x3ef sys/kern/subr_witness.c:1950 somove(fffffd806d7487b8,1) at somove+0x25d sbspace sys/sys/socketvar.h:209 [inline] somove(fffffd806d7487b8,1) at somove+0x25d sys/kern/uipc_socket.c:1487 sosplice(fffffd806d7487b8,5,0,fffffd8008790010) at sosplice+0x50b sys/kern/uipc_socket.c:1346 sosetopt(fffffd806d7487b8,ffff,1023,fffffd8068ea3b00) at sosetopt+0x7f4 sys_setsockopt(ffff800021311a48,ffff800021308b28,ffff800021308b70) at sys_setsockopt+0x1f6 sys/kern/uipc_syscalls.c:1233 syscall(ffff800021308bf0) at syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff800021308bf0) at syscall+0x435 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6800e237d0, count: -9