panic: lock (rwlock) solock not locked Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 516295 7200 32767 0x10 0 0 syz-executor.3 *262577 7200 32767 0x10 0x4000000 1K syz-executor.3 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(fffffd806fba37d0,4) at witness_assert+0x3ef sys/kern/subr_witness.c:1950 somove(fffffd80717117a8,1) at somove+0x25d sbspace sys/sys/socketvar.h:209 [inline] somove(fffffd80717117a8,1) at somove+0x25d sys/kern/uipc_socket.c:1487 sosplice(fffffd80717117a8,3,0,0) at sosplice+0x50b sys/kern/uipc_socket.c:1346 sosetopt(fffffd80717117a8,ffff,1023,fffffd806e6db300) at sosetopt+0x7f4 sys_setsockopt(ffff8000fffee550,ffff80002962ac38,ffff80002962ac80) at sys_setsockopt+0x1f6 sys/kern/uipc_syscalls.c:1233 syscall(ffff80002962ad00) at syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff80002962ad00) at syscall+0x435 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe8fcdc2fd90, 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(ffffffff82585177) at panic+0x177 sys/kern/subr_prf.c:198 witness_assert(fffffd806fba37d0,4) at witness_assert+0x3ef sys/kern/subr_witness.c:1950 somove(fffffd80717117a8,1) at somove+0x25d sbspace sys/sys/socketvar.h:209 [inline] somove(fffffd80717117a8,1) at somove+0x25d sys/kern/uipc_socket.c:1487 sosplice(fffffd80717117a8,3,0,0) at sosplice+0x50b sys/kern/uipc_socket.c:1346 sosetopt(fffffd80717117a8,ffff,1023,fffffd806e6db300) at sosetopt+0x7f4 sys_setsockopt(ffff8000fffee550,ffff80002962ac38,ffff80002962ac80) at sys_setsockopt+0x1f6 sys/kern/uipc_syscalls.c:1233 syscall(ffff80002962ad00) at syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff80002962ad00) at syscall+0x435 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe8fcdc2fd90, count: -9 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80002962a930 rbx 0xffff800020dd9b8f rdx 0xffff800000bd6840 rcx 0 rax 0xffff8000fffee550 r8 0x101010101010101 r9 0x8080808080808080 r10 0x5380b4d11dd5c98b r11 0x80fe1b099acc05ff r12 0xffff800020dd9990 r13 0 r14 0 r15 0x1 rip 0xffffffff81fd76c8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80002962a920 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.3) pid=262577 stat=onproc flags process=10 proc=4000000 pri=32, usrpri=51, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff4000,0xffff8000fffee2c0 process=0xffff8000ffff3620 user=0xffff800029625000, vmspace=0xfffffd8061a97190 estcpu=12, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 60135 6947 0 0 2 0x14200 sosplice 90016 342240 12394 32767 2 0x10 syz-executor.2 7200 516295 80078 32767 7 0x10 syz-executor.3 * 7200 262577 80078 32767 7 0x4000010 syz-executor.3 83959 49415 58757 32767 2 0x10 syz-executor.4 83959 313125 58757 32767 3 0x4000090 nanoslp syz-executor.4 83959 242556 58757 32767 3 0x4000090 nanoslp syz-executor.4 83959 212799 58757 32767 3 0x4000090 fsleep syz-executor.4 5283 35714 64728 32767 2 0x10 syz-executor.0 5283 299683 64728 32767 3 0x4000090 fsleep syz-executor.0 31370 165609 54282 32767 2 0x10 syz-executor.5 31370 69508 54282 32767 3 0x4000090 fsleep syz-executor.5 71391 428713 1842 32767 3 0x10 biowait syz-executor.6 65531 462955 39195 32767 3 0x10 getblk syz-executor.7 54282 460802 85194 32767 3 0x90 nanoslp syz-executor.5 39195 355090 6336 0 3 0x82 wait syz-executor.7 85194 426389 6336 0 3 0x82 wait syz-executor.5 1842 53346 6336 0 3 0x82 wait syz-executor.6 58757 264480 67523 32767 3 0x90 nanoslp syz-executor.4 12394 152670 55848 32767 2 0x10 syz-executor.2 67523 58797 6336 0 3 0x82 wait syz-executor.4 80078 68184 2228 32767 3 0x90 nanoslp syz-executor.3 55848 188588 6336 0 3 0x82 wait syz-executor.2 8048 276226 78680 32767 2 0x10 syz-executor.1 2228 283133 6336 0 3 0x82 wait syz-executor.3 78680 482223 6336 0 3 0x82 wait syz-executor.1 64728 71989 43531 32767 3 0x90 nanoslp syz-executor.0 43531 376582 6336 0 3 0x82 wait syz-executor.0 6336 361490 58523 0 3 0x82 thrsleep syz-fuzzer 6336 173106 58523 0 3 0x4000082 nanoslp syz-fuzzer 6336 350342 58523 0 3 0x4000082 wait syz-fuzzer 6336 497122 58523 0 3 0x4000082 wait syz-fuzzer 6336 273342 58523 0 3 0x4000082 wait syz-fuzzer 6336 92879 58523 0 3 0x4000082 thrsleep syz-fuzzer 6336 125801 58523 0 3 0x4000082 wait syz-fuzzer 6336 162613 58523 0 3 0x4000082 wait syz-fuzzer 6336 294274 58523 0 3 0x4000082 thrsleep syz-fuzzer 6336 99770 58523 0 3 0x4000082 wait syz-fuzzer 6336 400661 58523 0 3 0x4000082 kqread syz-fuzzer 6336 317446 58523 0 3 0x4000082 wait syz-fuzzer 6336 332007 58523 0 3 0x4000082 wait syz-fuzzer 6336 492319 58523 0 3 0x4000082 nanoslp syz-fuzzer 6336 217863 58523 0 3 0x4000082 thrsleep syz-fuzzer 58523 405288 14785 0 3 0x10008a sigsusp ksh 14785 400240 10513 0 3 0x9a kqread sshd 9706 467954 1 0 3 0x100083 ttyin getty 10513 290861 1 0 3 0x88 kqread sshd 18501 291716 38191 73 3 0x1100090 kqread syslogd 38191 248884 1 0 3 0x100082 netio syslogd 30092 29471 1 0 3 0x100080 kqread resolvd 2836 281993 97196 77 3 0x100092 kqread dhcpleased 16964 459070 97196 77 3 0x100092 kqread dhcpleased 97196 215703 1 0 3 0x80 kqread dhcpleased 38189 206323 0 0 3 0x14200 bored smr 58654 107993 0 0 2 0x14200 zerothread 6092 177142 0 0 3 0x14200 aiodoned aiodoned 57060 512472 0 0 3 0x14200 syncer update 96413 397505 0 0 3 0x14200 cleaner cleaner 2885 14718 0 0 3 0x14200 reaper reaper 15708 83388 0 0 3 0x14200 pgdaemon pagedaemon 12538 141937 0 0 3 0x14200 bored viomb 18159 287315 0 0 3 0x40014200 acpi0 acpi0 43076 308783 0 0 3 0x40014200 idle1 1344 483999 0 0 3 0x14200 bored softnet 43156 417949 0 0 3 0x14200 bored softnet 61098 239431 0 0 3 0x14200 bored softnet 15867 31870 0 0 3 0x14200 bored softnet 19902 335446 0 0 3 0x14200 bored systqmp 80042 281695 0 0 3 0x14200 bored systq 6582 465124 0 0 3 0x40014200 bored softclock 75040 63494 0 0 3 0x40014200 idle0 1 409811 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 7200 (syz-executor.3) thread 0xffff8000fffee550 (262577) 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 71391 (syz-executor.6) thread 0xffff80002966fa40 (428713) exclusive rrwlock inode r = 0 (0xfffffd80670032c8) #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 vget+0x1fc sys/kern/vfs_subr.c:676 #6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1324 #8 ufs_lookup+0x13ba sys/ufs/ufs/ufs_lookup.c:487 #9 VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:560 #11 namei+0x36a sys/kern/vfs_lookup.c:244 #12 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1848 #13 syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] #13 syscall+0x435 sys/arch/amd64/amd64/trap.c:585 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8069852810) #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 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1848 #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 65531 (syz-executor.7) thread 0xffff800021259508 (462955) exclusive rrwlock inode r = 0 (0xfffffd8067003708) #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 vget+0x1fc sys/kern/vfs_subr.c:676 #6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1324 #8 ufs_lookup+0x13ba sys/ufs/ufs/ufs_lookup.c:487 #9 VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:560 #11 namei+0x36a sys/kern/vfs_lookup.c:244 #12 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1848 #13 syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] #13 syscall+0x435 sys/arch/amd64/amd64/trap.c:585 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd80698523d0) #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 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1848 #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 10180 6407K 6420K 78643K 11270 0 pcb 13 8K 8K 78643K 13 0 rtable 236 6K 6K 78643K 346 0 ifaddr 82 16K 16K 78643K 84 0 counters 56 35K 35K 78643K 56 0 ioctlops 0 0K 2K 78643K 33 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1270 79K 79K 78643K 1285 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 1K 78643K 2 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 68 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 23 85K 117K 78643K 185 0 proc 59 91K 127K 78643K 468 0 subproc 104 6K 6K 78643K 104 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 99 6K 6K 78643K 99 0 ether_multi 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 25 122K 122K 78643K 25 0 exec 0 0K 2K 78643K 604 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 238 78K 79K 78643K 2472 0 UVM aobj 44 2K 2K 78643K 44 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 11 0K 2K 78643K 27 0 temp 83 4712K 4776K 78643K 3472 0 kqueue 12 18K 18K 78643K 22 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 34 0 30 1 0 1 1 0 8 0 rtentry 112 112 0 1 4 0 4 4 0 8 0 unpcb 144 203 0 186 6 0 6 6 0 8 5 syncache 296 4 0 4 1 1 0 1 0 8 0 tcpqe 32 541 0 541 3 1 2 2 0 8 2 tcpcb 768 10 0 3 1 0 1 1 0 8 0 arp 120 19 0 0 1 0 1 1 0 8 0 inpcb 368 62 0 52 2 0 2 2 0 8 1 nd6 48 24 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 454 0 0 29 0 29 29 0 8 0 art_table 32 455 0 0 4 0 4 4 0 8 0 art_node 16 111 0 10 1 0 1 1 0 8 0 semapl 112 66 0 56 1 0 1 1 0 8 0 shmpl 112 41 0 0 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1527 0 99 91 1 90 90 0 8 0 ffsino 272 1527 0 99 96 0 96 96 0 8 0 nchpl 144 1857 0 187 63 0 63 63 0 8 0 uvmvnodes 80 1640 0 0 34 0 34 34 0 8 0 vnodes 216 1640 0 0 92 0 92 92 0 8 0 namei 1024 6349 0 6349 3 1 2 2 0 8 2 percpumem 16 40 0 0 1 0 1 1 0 8 0 kstatmem 264 22 0 0 2 0 2 2 0 8 0 scxspl 216 5561 0 5560 2 1 1 2 0 8 0 plimitpl 152 30 0 8 1 0 1 1 0 8 0 sigapl 424 463 0 411 8 1 7 7 0 8 0 futexpl 64 532 0 529 1 0 1 1 0 8 0 knotepl 120 118 0 0 4 0 4 4 0 8 0 kqueuepl 216 22 0 14 1 0 1 1 0 8 0 pipepl 320 165 0 135 6 0 6 6 0 8 3 fdescpl 496 445 0 411 8 2 6 6 0 8 1 filepl 152 2117 0 1872 16 1 15 15 0 8 5 lockfpl 104 6 0 4 1 0 1 1 0 8 0 lockfspl 48 4 0 2 1 0 1 1 0 8 0 sessionpl 144 23 0 7 1 0 1 1 0 8 0 pgrppl 48 23 0 7 1 0 1 1 0 8 0 ucredpl 104 79 0 61 1 0 1 1 0 8 0 zombiepl 144 411 0 411 1 0 1 1 0 8 1 processpl 1064 463 0 411 4 0 4 4 0 8 0 procpl 672 582 0 510 7 0 7 7 0 8 0 sosppl 168 2 0 0 1 0 1 1 0 8 0 sockpl 488 302 0 271 20 8 12 20 0 8 8 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 10 0 0 2 0 2 2 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 348 0 0 43 0 43 43 0 8 0 mtagpl 96 1 0 0 1 0 1 1 0 8 0 mbufpl 256 421 0 0 26 0 26 26 0 8 0 bufpl 288 3587 0 132 247 0 247 247 0 8 0 anonpl 24 64815 0 53894 73 3 70 70 0 186 0 amapchunkpl 152 5509 0 4883 32 1 31 31 0 158 1 amappl16 200 554 0 275 18 1 17 17 0 8 0 amappl15 192 102 0 95 1 0 1 1 0 8 0 amappl14 184 14 0 12 1 0 1 1 0 8 0 amappl13 176 100 0 92 1 0 1 1 0 8 0 amappl12 168 6 0 4 1 0 1 1 0 8 0 amappl11 160 124 0 103 1 0 1 1 0 8 0 amappl10 152 21 0 19 1 0 1 1 0 8 0 amappl9 144 482 0 479 1 0 1 1 0 8 0 amappl8 136 534 0 486 2 0 2 2 0 8 0 amappl7 128 133 0 116 1 0 1 1 0 8 0 amappl6 120 176 0 165 2 1 1 2 0 8 0 amappl5 112 118 0 102 1 0 1 1 0 8 0 amappl4 104 819 0 783 3 1 2 2 0 8 0 amappl3 96 720 0 663 3 1 2 2 0 8 0 amappl2 88 447 0 407 2 0 2 2 0 8 0 amappl1 80 12449 0 11742 20 3 17 19 0 8 0 amappl 88 2048 0 1882 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 43 0 0 1 0 1 1 0 8 0 uaddrrnd 24 445 0 411 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 445 0 411 1 0 1 1 0 8 0 vmmpekpl 168 8290 0 8240 3 0 3 3 0 8 0 vmmpepl 168 44793 0 42305 155 1 154 154 0 357 34 vmsppl 368 444 0 411 5 1 4 4 0 8 0 rwobjpl 56 13549 0 10630 45 2 43 43 0 8 0 pdppl 4096 897 0 822 109 28 81 91 0 8 6 pvpl 32 242747 0 227024 249 5 244 248 0 265 110 pmappl 248 444 0 411 5 2 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 663 0 33 19 0 19 19 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff829b9ff0) 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(ffffffff82a8cef8) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82a8cef8) at __mp_lock+0x122 sys/kern/kern_lock.c:147 intr_handler(ffff80002e4d08c0,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: 0x7f7ffffd20b0, count: 9 ddb{0}> trace x86_ipi_db(ffffffff829b9ff0) 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(ffffffff82a8cef8) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82a8cef8) at __mp_lock+0x122 sys/kern/kern_lock.c:147 intr_handler(ffff80002e4d08c0,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: 0x7f7ffffd20b0, 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(ffffffff82585177) at panic+0x177 sys/kern/subr_prf.c:198 witness_assert(fffffd806fba37d0,4) at witness_assert+0x3ef sys/kern/subr_witness.c:1950 somove(fffffd80717117a8,1) at somove+0x25d sbspace sys/sys/socketvar.h:209 [inline] somove(fffffd80717117a8,1) at somove+0x25d sys/kern/uipc_socket.c:1487 sosplice(fffffd80717117a8,3,0,0) at sosplice+0x50b sys/kern/uipc_socket.c:1346 sosetopt(fffffd80717117a8,ffff,1023,fffffd806e6db300) at sosetopt+0x7f4 sys_setsockopt(ffff8000fffee550,ffff80002962ac38,ffff80002962ac80) at sys_setsockopt+0x1f6 sys/kern/uipc_syscalls.c:1233 syscall(ffff80002962ad00) at syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff80002962ad00) at syscall+0x435 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe8fcdc2fd90, count: 6 ddb{1}> 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(fffffd806fba37d0,4) at witness_assert+0x3ef sys/kern/subr_witness.c:1950 somove(fffffd80717117a8,1) at somove+0x25d sbspace sys/sys/socketvar.h:209 [inline] somove(fffffd80717117a8,1) at somove+0x25d sys/kern/uipc_socket.c:1487 sosplice(fffffd80717117a8,3,0,0) at sosplice+0x50b sys/kern/uipc_socket.c:1346 sosetopt(fffffd80717117a8,ffff,1023,fffffd806e6db300) at sosetopt+0x7f4 sys_setsockopt(ffff8000fffee550,ffff80002962ac38,ffff80002962ac80) at sys_setsockopt+0x1f6 sys/kern/uipc_syscalls.c:1233 syscall(ffff80002962ad00) at syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff80002962ad00) at syscall+0x435 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe8fcdc2fd90, count: -9