panic: lock (rwlock) solock not locked Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 424720 44427 32767 0x10 0 1 syz-executor.4 *471180 44427 32767 0x10 0x4000000 0K syz-executor.4 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82585177) at panic+0x177 sys/kern/subr_prf.c:198 witness_assert(fffffd8069ae8030,4) at witness_assert+0x3ef sys/kern/subr_witness.c:1950 somove(fffffd8069ae89a0,1) at somove+0x25d sbspace sys/sys/socketvar.h:209 [inline] somove(fffffd8069ae89a0,1) at somove+0x25d sys/kern/uipc_socket.c:1487 sosplice(fffffd8069ae89a0,3,0,fffffd806a571810) at sosplice+0x50b sys/kern/uipc_socket.c:1346 sosetopt(fffffd8069ae89a0,ffff,1023,fffffd80724ebe00) at sosetopt+0x7f4 sys_setsockopt(ffff8000ffff0010,ffff80002e4b4708,ffff80002e4b4750) at sys_setsockopt+0x1f6 sys/kern/uipc_syscalls.c:1233 syscall(ffff80002e4b47d0) at syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff80002e4b47d0) at syscall+0x435 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xcfd01ceae30, 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: lock (rwlock) solock not locked ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82585177) at panic+0x177 sys/kern/subr_prf.c:198 witness_assert(fffffd8069ae8030,4) at witness_assert+0x3ef sys/kern/subr_witness.c:1950 somove(fffffd8069ae89a0,1) at somove+0x25d sbspace sys/sys/socketvar.h:209 [inline] somove(fffffd8069ae89a0,1) at somove+0x25d sys/kern/uipc_socket.c:1487 sosplice(fffffd8069ae89a0,3,0,fffffd806a571810) at sosplice+0x50b sys/kern/uipc_socket.c:1346 sosetopt(fffffd8069ae89a0,ffff,1023,fffffd80724ebe00) at sosetopt+0x7f4 sys_setsockopt(ffff8000ffff0010,ffff80002e4b4708,ffff80002e4b4750) at sys_setsockopt+0x1f6 sys/kern/uipc_syscalls.c:1233 syscall(ffff80002e4b47d0) at syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff80002e4b47d0) at syscall+0x435 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xcfd01ceae30, count: -9 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002e4b4400 rbx 0xffffffff829bab8f cpu_info_full_primary+0x2b8f rdx 0xffff800000bddb40 rcx 0 rax 0xffff8000ffff0010 r8 0x101010101010101 r9 0x8080808080808080 r10 0x3beb95490bfd2a97 r11 0x93375aed9571315b r12 0xffffffff829ba990 cpu_info_full_primary+0x2990 r13 0 r14 0 r15 0x1 rip 0xffffffff81fd76c8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80002e4b43f0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.4) pid=471180 stat=onproc flags process=10 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000fffeb500,0xffffffff82b7cfd0 process=0xffff800021299d28 user=0xffff80002e4af000, vmspace=0xfffffd807e9d9b98 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 28963 221294 37727 32767 3 0x90 nanoslp syz-executor.6 28963 54596 37727 32767 3 0x4000090 fsleep syz-executor.6 28963 3329 37727 32767 3 0x4000090 fsleep syz-executor.6 44427 424720 68027 32767 7 0x10 syz-executor.4 44427 193991 68027 32767 3 0x4000090 netcon2 syz-executor.4 *44427 471180 68027 32767 7 0x4000010 syz-executor.4 37057 443287 59437 32767 2 0x10 syz-executor.1 37057 485485 59437 32767 2 0x4000010 syz-executor.1 37057 154374 59437 32767 3 0x4000090 fsleep syz-executor.1 85645 150659 4916 32767 3 0x90 nanoslp syz-executor.7 85645 385102 4916 32767 3 0x4000090 fsleep syz-executor.7 85645 506236 4916 32767 3 0x4000090 fsleep syz-executor.7 85645 52192 4916 32767 3 0x4000090 fsleep syz-executor.7 36218 480062 7965 32767 2 0x10 syz-executor.2 36218 45900 7965 32767 3 0x4000090 fsleep syz-executor.2 36218 330161 7965 32767 3 0x4000090 fsleep syz-executor.2 37727 120088 90557 32767 3 0x90 nanoslp syz-executor.6 90557 269913 26043 0 3 0x82 wait syz-executor.6 7965 92811 13932 32767 3 0x90 nanoslp syz-executor.2 13932 72064 26043 0 3 0x82 wait syz-executor.2 6413 382113 32004 32767 2 0x10 syz-executor.5 32004 217115 26043 0 3 0x82 wait syz-executor.5 90183 383421 22732 32767 2 0x10 syz-executor.0 22732 187939 26043 0 3 0x82 wait syz-executor.0 26853 309980 0 0 3 0x14200 bored sosplice 4916 339530 71911 32767 3 0x90 nanoslp syz-executor.7 71911 118594 26043 0 3 0x82 wait syz-executor.7 68027 452827 22407 32767 3 0x90 nanoslp syz-executor.4 22407 424096 26043 0 3 0x82 wait syz-executor.4 8355 102586 42146 32767 3 0x90 nanoslp syz-executor.3 59437 45464 10156 32767 3 0x90 nanoslp syz-executor.1 42146 220709 26043 0 3 0x82 wait syz-executor.3 10156 227898 26043 0 3 0x82 wait syz-executor.1 26043 111968 63213 0 3 0x82 thrsleep syz-fuzzer 26043 29030 63213 0 3 0x4000082 nanoslp syz-fuzzer 26043 357309 63213 0 3 0x4000082 nanoslp syz-fuzzer 26043 388977 63213 0 3 0x4000082 thrsleep syz-fuzzer 26043 179010 63213 0 3 0x4000082 wait syz-fuzzer 26043 194362 63213 0 3 0x4000082 thrsleep syz-fuzzer 26043 447890 63213 0 3 0x4000082 wait syz-fuzzer 26043 440235 63213 0 3 0x4000082 thrsleep syz-fuzzer 26043 94819 63213 0 3 0x4000082 kqread syz-fuzzer 26043 21393 63213 0 3 0x4000082 wait syz-fuzzer 26043 433777 63213 0 3 0x4000082 wait syz-fuzzer 26043 462752 63213 0 3 0x4000082 thrsleep syz-fuzzer 26043 437064 63213 0 3 0x4000082 wait syz-fuzzer 26043 342005 63213 0 3 0x4000082 wait syz-fuzzer 26043 458654 63213 0 3 0x4000082 wait syz-fuzzer 26043 231388 63213 0 3 0x4000082 wait syz-fuzzer 63213 465448 35172 0 3 0x10008a sigsusp ksh 35172 206158 53160 0 3 0x9a kqread sshd 65083 407797 1 0 3 0x100083 ttyin getty 53160 288440 1 0 3 0x88 kqread sshd 79857 109611 58799 73 3 0x1100090 kqread syslogd 58799 51358 1 0 3 0x100082 netio syslogd 2153 419977 1 0 3 0x100080 kqread resolvd 13566 437358 51626 77 3 0x100092 kqread dhcpleased 54284 195512 51626 77 3 0x100092 kqread dhcpleased 51626 504421 1 0 3 0x80 kqread dhcpleased 35926 362115 0 0 3 0x14200 bored smr 91180 201379 0 0 2 0x14200 zerothread 22400 155118 0 0 3 0x14200 aiodoned aiodoned 97212 135416 0 0 3 0x14200 syncer update 2640 360041 0 0 3 0x14200 cleaner cleaner 23113 94477 0 0 3 0x14200 reaper reaper 57029 49007 0 0 3 0x14200 pgdaemon pagedaemon 60216 239905 0 0 3 0x14200 bored viomb 66456 306268 0 0 3 0x40014200 acpi0 acpi0 57469 461808 0 0 3 0x40014200 idle1 84724 11296 0 0 3 0x14200 bored softnet 39701 438470 0 0 3 0x14200 bored softnet 65229 164813 0 0 3 0x14200 bored softnet 12082 372505 0 0 3 0x14200 bored softnet 81513 268190 0 0 3 0x14200 bored systqmp 79869 496025 0 0 3 0x14200 bored systq 44944 235868 0 0 3 0x40014200 bored softclock 76004 159929 0 0 3 0x40014200 idle0 1 117439 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 44427 (syz-executor.4) thread 0xffff8000ffff0010 (471180) exclusive rwlock netlock r = 0 (0xffffffff82971a40) #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 (0xffffffff82a8d100) #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 6413 (syz-executor.5) thread 0xffff8000ffff07f0 (382113) exclusive rrwlock inode r = 0 (0xfffffd8072745d58) #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 (0xfffffd8078fc7a30) #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 Process 90183 (syz-executor.0) thread 0xffff8000ffff1510 (383421) exclusive rrwlock inode r = 0 (0xfffffd80727454d8) #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 (0xfffffd80721f21b8) #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{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10216 6412K 6420K 78643K 11329 0 pcb 13 8K 8K 78643K 13 0 rtable 234 6K 7K 78643K 762 0 ifaddr 82 17K 17K 78643K 135 0 sysctl 2 0K 0K 78643K 2 0 counters 56 35K 35K 78643K 70 0 ioctlops 0 0K 2K 78643K 50 0 iov 0 0K 16K 78643K 901 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1271 79K 79K 78643K 2124 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 54 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 954 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 23 85K 113K 78643K 4243 0 sigio 0 0K 0K 78643K 32 0 proc 56 78K 103K 78643K 957 0 subproc 104 6K 6K 78643K 195 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 304 0 in_multi 99 6K 6K 78643K 220 0 ether_multi 1 0K 0K 78643K 15 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 241 1076K 1076K 78643K 241 0 exec 0 0K 2K 78643K 1591 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 327 92K 108K 78643K 27380 0 UVM aobj 131 4K 4K 78643K 131 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 121 0 NDP 11 0K 2K 78643K 48 0 temp 124 4726K 4854K 78643K 13182 0 kqueue 12 18K 28K 78643K 438 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> 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 1395 0 1392 14 11 3 4 0 8 2 rtentry 112 191 0 81 4 0 4 4 0 8 0 unpcb 144 8978 0 8961 69 63 6 11 0 8 5 syncache 296 37 0 37 7 7 0 1 0 8 0 tcpqe 32 32 0 32 7 7 0 1 0 8 0 tcpcb 768 1520 0 1505 53 44 9 10 0 8 6 arp 120 32 0 14 1 0 1 1 0 8 0 ipq 40 5 0 5 2 1 1 1 0 8 1 ipqe 40 13 0 13 2 1 1 1 0 8 1 inpcb 368 3543 0 3529 58 50 8 13 0 8 6 ip6q 72 1 0 0 1 0 1 1 0 8 0 ip6af 40 1 0 0 1 0 1 1 0 8 0 nd6 48 48 0 24 1 0 1 1 0 8 0 kcovpl 48 15 0 7 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 779 0 325 30 1 29 30 0 8 0 art_table 32 780 0 325 4 0 4 4 0 8 0 art_node 16 190 0 90 1 0 1 1 0 8 0 sysvmsgpl 40 5 0 1 1 0 1 1 0 8 0 semapl 112 952 0 942 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 7064 0 5625 91 0 91 91 0 8 0 ffsino 272 7064 0 5625 97 0 97 97 0 8 0 nchpl 144 12751 0 11114 63 0 63 63 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 44677 0 44675 3 2 1 2 0 8 0 percpumem 16 47 0 7 1 0 1 1 0 8 0 kstatmem 264 36 0 14 2 0 2 2 0 8 0 scxspl 216 35864 0 35864 21 20 1 8 0 8 1 plimitpl 152 830 0 808 7 6 1 2 0 8 0 sigapl 424 4504 0 4451 7 0 7 7 0 8 0 futexpl 64 37598 0 37590 2 1 1 1 0 8 0 knotepl 120 430 0 0 13 2 11 11 0 8 0 kqueuepl 216 1432 0 1422 23 22 1 8 0 8 0 pipepl 320 1297 0 1269 39 33 6 13 0 8 3 fdescpl 496 4486 0 4452 7 2 5 6 0 8 0 filepl 152 35418 0 35171 93 75 18 22 0 8 8 lockfpl 104 589 0 586 2 1 1 2 0 8 0 lockfspl 48 205 0 202 1 0 1 1 0 8 0 sessionpl 144 30 0 14 1 0 1 1 0 8 0 pgrppl 48 32 0 16 1 0 1 1 0 8 0 ucredpl 104 5758 0 5740 1 0 1 1 0 8 0 zombiepl 144 4452 0 4451 1 0 1 1 0 8 0 processpl 1064 4504 0 4451 4 0 4 4 0 8 0 procpl 672 12640 0 12561 20 12 8 9 0 8 0 sosppl 168 66 0 64 7 6 1 1 0 8 0 sockpl 488 13985 0 13951 373 359 14 42 0 8 8 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 17 0 0 3 0 3 3 0 8 0 mcl12k 12288 23 0 0 2 0 2 2 0 8 0 mcl9k 9216 15 0 0 2 0 2 2 0 8 0 mcl8k 8192 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 341 0 0 38 5 33 38 0 8 0 mtagpl 96 4 0 0 1 0 1 1 0 8 0 mbufpl 256 1197 0 0 62 0 62 62 0 8 0 bufpl 288 10032 0 3702 453 0 453 453 0 8 0 anonpl 24 881043 0 867430 177 70 107 107 0 186 15 amapchunkpl 152 91763 0 91062 87 58 29 42 0 158 0 amappl16 200 13141 0 12756 88 55 33 33 0 8 11 amappl15 192 399 0 392 1 0 1 1 0 8 0 amappl14 184 345 0 338 1 0 1 1 0 8 0 amappl13 176 753 0 750 1 0 1 1 0 8 0 amappl12 168 583 0 581 2 1 1 1 0 8 0 amappl11 160 1114 0 1094 1 0 1 1 0 8 0 amappl10 152 1562 0 1550 1 0 1 1 0 8 0 amappl9 144 518 0 516 1 0 1 1 0 8 0 amappl8 136 855 0 754 4 0 4 4 0 8 0 amappl7 128 197 0 177 1 0 1 1 0 8 0 amappl6 120 273 0 259 2 1 1 2 0 8 0 amappl5 112 3778 0 3755 1 0 1 1 0 8 0 amappl4 104 3122 0 3084 2 0 2 2 0 8 0 amappl3 96 14318 0 14249 2 0 2 2 0 8 0 amappl2 88 1653 0 1612 2 1 1 2 0 8 0 amappl1 80 113084 0 112338 19 2 17 19 0 8 0 amappl 88 26618 0 26413 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 72 130 0 0 3 0 3 3 0 8 0 uaddrrnd 24 4486 0 4452 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 4486 0 4452 1 0 1 1 0 8 0 vmmpekpl 168 40656 0 40603 3 0 3 3 0 8 0 vmmpepl 168 446476 0 443704 202 61 141 146 0 357 8 vmsppl 368 4485 0 4452 4 0 4 4 0 8 0 rwobjpl 56 116995 0 109475 111 1 110 110 0 8 3 pdppl 4096 8979 0 8904 243 162 81 89 0 8 6 pvpl 32 1721312 0 1702498 309 123 186 241 0 265 22 pmappl 248 4485 0 4452 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1098 0 222 26 0 26 26 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82585177) at panic+0x177 sys/kern/subr_prf.c:198 witness_assert(fffffd8069ae8030,4) at witness_assert+0x3ef sys/kern/subr_witness.c:1950 somove(fffffd8069ae89a0,1) at somove+0x25d sbspace sys/sys/socketvar.h:209 [inline] somove(fffffd8069ae89a0,1) at somove+0x25d sys/kern/uipc_socket.c:1487 sosplice(fffffd8069ae89a0,3,0,fffffd806a571810) at sosplice+0x50b sys/kern/uipc_socket.c:1346 sosetopt(fffffd8069ae89a0,ffff,1023,fffffd80724ebe00) at sosetopt+0x7f4 sys_setsockopt(ffff8000ffff0010,ffff80002e4b4708,ffff80002e4b4750) at sys_setsockopt+0x1f6 sys/kern/uipc_syscalls.c:1233 syscall(ffff80002e4b47d0) at syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff80002e4b47d0) at syscall+0x435 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xcfd01ceae30, count: -9 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020dd8ff0) 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 end of kernel end trace frame: 0x7f7ffffde8b0, count: 12 ddb{1}> trace x86_ipi_db(ffff800020dd8ff0) 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 end of kernel end trace frame: 0x7f7ffffde8b0, count: -3