witness: userret: returning with the following locks held: exclusive rwlock solock r = 0 (0xfffffd806d6ce030) #0 witness_lock+0x44d #1 unp_solock_peer+0x64 sys/kern/uipc_usrreq.c:168 #2 uipc_usrreq+0x7c6 sys/kern/uipc_usrreq.c:350 #3 sosend+0x61b sys/kern/uipc_socket.c:657 #4 sendit+0x65d sys/kern/uipc_syscalls.c:682 #5 sys_sendmsg+0x198 sys/kern/uipc_syscalls.c:589 #6 syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline] #6 syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585 #7 Xsyscall+0x128 panic: witness_warn Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 155271 35967 0 0 0x4000000 0 syz-executor.3 * 2749 44994 0 0 0x4000000 1 syz-executor.0 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82593e80) at panic+0x177 sys/kern/subr_prf.c:202 witness_warn(2,0,ffffffff82620d13) at witness_warn+0x65e witness_debugger sys/kern/subr_witness.c:2505 [inline] witness_warn(2,0,ffffffff82620d13) at witness_warn+0x65e sys/kern/subr_witness.c:1473 userret(ffff8000212e2d30) at userret+0x265 sys/kern/kern_sig.c:2012 syscall(ffff80002e56fad0) at syscall+0x57e mi_syscall_return sys/sys/syscall_mi.h:128 [inline] syscall(ffff80002e56fad0) at syscall+0x57e sys/arch/amd64/amd64/trap.c:607 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb48748e920, count: 9 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: witness_warn ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82593e80) at panic+0x177 sys/kern/subr_prf.c:202 witness_warn(2,0,ffffffff82620d13) at witness_warn+0x65e witness_debugger sys/kern/subr_witness.c:2505 [inline] witness_warn(2,0,ffffffff82620d13) at witness_warn+0x65e sys/kern/subr_witness.c:1473 userret(ffff8000212e2d30) at userret+0x265 sys/kern/kern_sig.c:2012 syscall(ffff80002e56fad0) at syscall+0x57e mi_syscall_return sys/sys/syscall_mi.h:128 [inline] syscall(ffff80002e56fad0) at syscall+0x57e sys/arch/amd64/amd64/trap.c:607 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb48748e920, count: -6 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80002e56f800 rbx 0xffff800020dd9bb7 rdx 0xffff800000c8b380 rcx 0 rax 0xffff8000212e2d30 r8 0x101010101010101 r9 0x8080808080808080 r10 0x2b1c994140ba6dc2 r11 0x908952bd42ac1d87 r12 0xffff800020dd99b8 r13 0 r14 0 r15 0x1 rip 0xffffffff81d03c18 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80002e56f7f0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.0) pid=2749 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff80002b0297a8,0xffff8000212e3280 process=0xffff800028e05d30 user=0xffff80002e56a000, vmspace=0xfffffd8066194748 estcpu=36, cpticks=6, pctcpu=0.0 user=0, sys=5, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 35967 108252 89851 0 2 0 syz-executor.3 35967 155271 89851 0 7 0x4000000 syz-executor.3 34684 348535 57266 0 2 0 syz-executor.6 34684 394191 57266 0 2 0x4000080 syz-executor.6 37885 82912 24957 0 2 0 syz-executor.7 37885 316038 24957 0 3 0x4000080 pipewr syz-executor.7 44994 422587 72464 0 2 0 syz-executor.0 *44994 2749 72464 0 7 0x4000000 syz-executor.0 91140 208864 79881 0 3 0x82 piperd syz-executor.5 28566 513009 79881 0 2 0x482 syz-executor.4 72464 328358 79881 0 2 0x482 syz-executor.0 1929 379068 0 0 3 0x14280 nfsidl nfsio 77032 274367 0 0 3 0x14280 nfsidl nfsio 26528 386398 0 0 3 0x14280 nfsidl nfsio 6234 167236 0 0 3 0x14280 nfsidl nfsio 69508 179253 0 0 3 0x14280 nfsidl nfsio 8852 1847 0 0 3 0x14280 nfsidl nfsio 2105 120773 0 0 3 0x14280 nfsidl nfsio 25894 371238 0 0 3 0x14280 nfsidl nfsio 93340 102693 0 0 3 0x14280 nfsidl nfsio 71680 195504 0 0 3 0x14280 nfsidl nfsio 2652 507050 0 0 3 0x14280 nfsidl nfsio 64697 474624 0 0 3 0x14280 nfsidl nfsio 50687 442153 0 0 3 0x14280 nfsidl nfsio 47116 315486 0 0 3 0x14280 nfsidl nfsio 2260 271855 0 0 3 0x14280 nfsidl nfsio 67264 46008 0 0 3 0x14280 nfsidl nfsio 67838 266278 0 0 3 0x14280 nfsidl nfsio 2299 228223 0 0 3 0x14280 nfsidl nfsio 31589 268131 0 0 3 0x14280 nfsidl nfsio 2865 444544 0 0 3 0x14280 nfsidl nfsio 57266 80388 79881 0 3 0x82 nanoslp syz-executor.6 10874 267781 79881 0 2 0x2 syz-executor.2 14477 23187 0 0 3 0x14200 bored sosplice 24957 115474 79881 0 2 0x482 syz-executor.7 89851 159727 79881 0 3 0x82 nanoslp syz-executor.3 9006 378185 79881 0 3 0x82 piperd syz-executor.1 79881 469153 99462 0 3 0x82 thrsleep syz-fuzzer 79881 40000 99462 0 3 0x4000082 nanoslp syz-fuzzer 79881 382127 99462 0 3 0x4000082 thrsleep syz-fuzzer 79881 165677 99462 0 2 0x4000482 syz-fuzzer 79881 487885 99462 0 2 0x4000082 syz-fuzzer 79881 194491 99462 0 3 0x4000082 thrsleep syz-fuzzer 79881 177306 99462 0 3 0x4000082 thrsleep syz-fuzzer 79881 28909 99462 0 3 0x4000082 thrsleep syz-fuzzer 79881 93070 99462 0 3 0x4000082 thrsleep syz-fuzzer 99462 475672 22146 0 3 0x10008a sigsusp ksh 22146 377727 55087 0 3 0x9a kqread sshd 18037 504065 1 0 3 0x100083 ttyopn getty 55087 122794 1 0 3 0x88 kqread sshd 2667 286773 56809 74 3 0x1100092 bpf pflogd 56809 23379 1 0 3 0x80 netio pflogd 82853 512192 64089 73 2 0x1100010 syslogd 64089 320807 1 0 3 0x100082 netio syslogd 57324 325662 1 0 3 0x100080 kqread resolvd 39439 142342 52928 77 3 0x100092 kqread dhcpleased 29263 451245 52928 77 3 0x100092 kqread dhcpleased 52928 172615 1 0 3 0x80 kqread dhcpleased 13666 241319 0 0 3 0x14200 bored smr 43226 382638 0 0 2 0x14200 zerothread 43037 402097 0 0 3 0x14200 aiodoned aiodoned 87385 61848 0 0 3 0x14200 syncer update 59928 311999 0 0 3 0x14200 cleaner cleaner 62390 175920 0 0 3 0x14200 reaper reaper 46387 55775 0 0 3 0x14200 pgdaemon pagedaemon 93397 95372 0 0 3 0x14200 bored viomb 26264 375390 0 0 3 0x40014200 acpi0 acpi0 59982 211137 0 0 3 0x40014200 idle1 4410 79110 0 0 3 0x14200 bored softnet 90913 17670 0 0 3 0x14200 bored softnet 63529 440277 0 0 3 0x14200 bored softnet 76567 381832 0 0 3 0x14200 bored softnet 49522 246071 0 0 2 0x14200 systqmp 52403 344848 0 0 3 0x14200 bored systq 49695 44481 0 0 3 0x40014200 bored softclock 26557 258241 0 0 3 0x40014200 idle0 1 131111 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 35967 (syz-executor.3) thread 0xffff8000212e3a50 (155271) exclusive rrwlock inode r = 0 (0xfffffd80730b62b8) #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:1347 #6 ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394 #7 ufs_makeinode+0xae sys/ufs/ufs/ufs_vnops.c:1818 #8 ufs_mknod+0x4e sys/ufs/ufs/ufs_vnops.c:171 #9 VOP_MKNOD+0xbf sys/kern/vfs_vops.c:121 #10 domknodat+0x326 sys/kern/vfs_syscalls.c:1632 #11 syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] #11 syscall+0x435 sys/arch/amd64/amd64/trap.c:585 #12 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806e366818) #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:567 #5 vfs_lookup+0xd1 sys/kern/vfs_lookup.c:413 #6 namei+0x36a sys/kern/vfs_lookup.c:245 #7 domknodat+0x92 sys/kern/vfs_syscalls.c:1584 #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 44994 (syz-executor.0) thread 0xffff8000212e2d30 (2749) exclusive rwlock solock r = 0 (0xfffffd806d6ce030) #0 witness_lock+0x44d #1 unp_solock_peer+0x64 sys/kern/uipc_usrreq.c:168 #2 uipc_usrreq+0x7c6 sys/kern/uipc_usrreq.c:350 #3 sosend+0x61b sys/kern/uipc_socket.c:657 #4 sendit+0x65d sys/kern/uipc_syscalls.c:682 #5 sys_sendmsg+0x198 sys/kern/uipc_syscalls.c:589 #6 syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline] #6 syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585 #7 Xsyscall+0x128 Process 82853 (syslogd) thread 0xffff8000ffff7270 (512192) exclusive rrwlock inode r = 0 (0xfffffd806e7df1b0) #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:567 #5 sys_fsync+0xf5 sys/kern/vfs_syscalls.c:2939 #6 syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] #6 syscall+0x435 sys/arch/amd64/amd64/trap.c:585 #7 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10213 6550K 7135K 78643K 20117 0 pcb 13 12K 14K 78643K 492 0 rtable 231 12K 12K 78643K 1091 0 ifaddr 95 20K 21K 78643K 684 0 sysctl 2 0K 0K 78643K 2 0 counters 56 35K 36K 78643K 178 0 ioctlops 0 0K 4K 78643K 2457 0 iov 0 0K 16K 78643K 323 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1334 83K 84K 78643K 4248 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 13 5K 8K 78643K 109 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 14 49K 81K 78643K 4772 0 sigio 0 0K 0K 78643K 25 0 proc 70 91K 115K 78643K 1120 0 subproc 104 6K 6K 78643K 276 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 141 0 in_multi 95 6K 7K 78643K 397 0 ether_multi 1 0K 0K 78643K 21 0 mrt 1 0K 0K 78643K 6 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 169 758K 758K 78643K 169 0 exec 0 0K 2K 78643K 1772 0 pfkey data 0 0K 0K 78643K 8 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 7 26K 26K 78643K 7 0 UVM amap 328 350K 350K 78643K 29725 0 UVM aobj 131 4K 4K 78643K 134 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 146 0 NDP 13 0K 2K 78643K 139 0 temp 284 5020K 6044K 78643K 49056 0 kqueue 12 18K 26K 78643K 477 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 120 332 0 329 6 5 1 3 0 8 0 rtentry 112 305 0 210 4 0 4 4 0 8 0 unpcb 144 3679 0 3662 36 32 4 6 0 8 3 syncache 296 22 0 22 7 6 1 1 0 8 1 tcpqe 32 6 0 6 2 1 1 1 0 8 1 tcpcb 736 1320 0 1316 52 50 2 11 0 8 1 arp 120 44 0 28 1 0 1 1 0 8 0 inpcb 320 3557 0 3550 67 60 7 7 0 8 6 ip6q 72 4 0 4 1 1 0 1 0 8 0 ip6af 40 12 0 12 1 1 0 1 0 8 0 nd6 48 93 0 69 1 0 1 1 0 8 0 pkpcb 40 17 0 17 5 4 1 1 0 8 1 kcovpl 48 21 0 13 1 0 1 1 0 8 0 ppxss 1256 27 0 27 5 5 0 1 0 8 0 pfstscr 40 11 0 11 3 3 0 1 0 8 0 pffrag 232 9 0 9 3 3 0 1 0 482 0 pffrnode 88 9 0 9 3 3 0 1 0 8 0 pffrent 40 102 0 102 5 5 0 1 0 8 0 pfosfp 40 1432 0 1008 5 0 5 5 0 8 0 pfosfpen 112 1432 0 714 21 0 21 21 0 8 0 pfrktable 1344 55 0 44 2 1 1 2 0 8 0 pftag 88 7 0 3 1 0 1 1 0 8 0 pfstitem 24 41 0 39 1 0 1 1 0 8 0 pfstkey 120 53 0 51 1 0 1 1 0 8 0 pfstate 336 44 0 42 3 2 1 3 0 8 0 pfrule 1360 259 0 225 7 4 3 3 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1291 0 849 35 6 29 30 0 8 0 art_table 32 1292 0 849 4 0 4 4 0 8 0 art_node 16 304 0 221 1 0 1 1 0 8 0 sysvmsgpl 40 13 0 8 1 0 1 1 0 8 0 semapl 112 97 0 86 1 0 1 1 0 8 0 shmpl 112 131 0 3 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 7846 0 6398 91 0 91 91 0 8 0 ffsino 272 7846 0 6398 97 0 97 97 0 8 0 nchpl 144 14348 0 12699 63 0 63 63 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 50862 0 50861 5 4 1 2 0 8 0 percpumem 16 101 0 61 1 0 1 1 0 8 0 vcpupl 2048 90 0 0 12 0 12 12 0 8 0 vmpool 568 161 0 71 8 1 7 7 0 8 0 pfiaddrpl 120 25 0 9 1 0 1 1 0 8 0 kstatmem 264 148 0 122 3 1 2 3 0 8 0 scxspl 216 47379 0 47379 15 14 1 8 0 8 1 plimitpl 152 812 0 797 1 0 1 1 0 8 0 sigapl 424 5075 0 5009 10 2 8 8 0 8 0 futexpl 64 38899 0 38899 5 4 1 1 0 8 1 knotepl 120 520 0 0 7 0 7 7 0 8 0 kqueuepl 224 4729 0 4721 60 56 4 13 0 8 3 pipepl 336 580 0 551 14 11 3 8 0 8 0 fdescpl 496 5037 0 5010 5 0 5 5 0 8 0 filepl 152 34170 0 33928 89 75 14 20 0 8 3 lockfpl 104 2164 0 2162 5 3 2 2 0 8 1 lockfspl 48 890 0 888 1 0 1 1 0 8 0 sessionpl 144 37 0 20 1 0 1 1 0 8 0 pgrppl 48 45 0 28 1 0 1 1 0 8 0 ucredpl 104 4511 0 4499 1 0 1 1 0 8 0 zombiepl 144 5010 0 5009 2 1 1 1 0 8 0 processpl 1064 5075 0 5009 5 0 5 5 0 8 0 procpl 672 13847 0 13769 20 12 8 9 0 8 0 srpgc 96 22 0 22 6 6 0 1 0 8 0 sosppl 168 30 0 30 6 5 1 1 0 8 1 sockpl 504 7592 0 7565 150 138 12 21 0 8 8 mcl64k 65536 20 0 0 3 0 3 3 0 8 1 mcl16k 16384 10 0 0 2 0 2 2 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 14 0 0 1 0 1 1 0 8 0 mcl8k 8192 26 0 0 3 0 3 3 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 1 mcl2k2 2112 36 0 0 3 0 3 3 0 8 0 mcl2k 2048 251 0 0 23 2 21 23 0 8 0 mtagpl 96 702 0 0 16 0 16 16 0 8 0 mbufpl 256 1180 0 0 61 0 61 61 0 8 0 bufpl 288 10696 0 4364 453 0 453 453 0 8 0 anonpl 24 995875 0 976632 263 140 123 155 0 186 0 amapchunkpl 152 84778 0 84086 59 27 32 41 0 158 0 amappl16 200 13205 0 12543 102 65 37 54 0 8 1 amappl15 192 716 0 712 1 0 1 1 0 8 0 amappl14 184 912 0 906 2 1 1 1 0 8 0 amappl13 176 519 0 515 1 0 1 1 0 8 0 amappl12 168 795 0 791 1 0 1 1 0 8 0 amappl11 160 188 0 167 3 2 1 2 0 8 0 amappl10 152 1054 0 1045 1 0 1 1 0 8 0 amappl9 144 601 0 595 1 0 1 1 0 8 0 amappl8 136 1964 0 1892 3 0 3 3 0 8 0 amappl7 128 1280 0 1266 1 0 1 1 0 8 0 amappl6 120 406 0 389 2 1 1 2 0 8 0 amappl5 112 4513 0 4495 1 0 1 1 0 8 0 amappl4 104 1820 0 1790 2 1 1 2 0 8 0 amappl3 96 15543 0 15491 2 0 2 2 0 8 0 amappl2 88 6048 0 5989 3 1 2 3 0 8 0 amappl1 80 121268 0 120641 24 9 15 20 0 8 0 amappl 88 28884 0 28701 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 72 133 0 3 3 0 3 3 0 8 0 uaddrrnd 24 5198 0 5081 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 5198 0 5081 1 0 1 1 0 8 0 vmmpekpl 168 38025 0 37954 4 0 4 4 0 8 0 vmmpepl 168 492567 0 489788 200 62 138 153 0 357 0 vmsppl 368 5197 0 5081 12 1 11 11 0 8 0 rwobjpl 56 126863 0 119104 117 6 111 112 0 8 0 pdppl 4096 10403 0 10252 436 278 158 158 0 8 7 pvpl 32 2168690 0 2146506 435 237 198 252 0 265 0 pmappl 248 5197 0 5081 8 0 8 8 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 1474 0 503 28 0 28 28 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff82936ff0) 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(ffffffff82a57c00) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82a57c00) at __mp_lock+0x122 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff82a57c00,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x3bb sys/kern/sched_bsd.c:416 sleep_finish(ffff800024bb3ca0,1) at sleep_finish+0x180 sys/kern/kern_synch.c:420 tsleep(fffffd806823fb48,11,ffffffff8261ca61,0) at tsleep+0x12c sys/kern/kern_synch.c:158 biowait(fffffd806823fb48) at biowait+0x91 sys/kern/vfs_bio.c:1271 bwrite(fffffd806823fb48) at bwrite+0x21b sys/kern/vfs_bio.c:772 VOP_BWRITE(fffffd806823fb48) at VOP_BWRITE+0x4a sys/kern/vfs_vops.c:640 ufs_direnter(fffffd8068a337b0,fffffd8067a3c238,ffff800024bb3ed8,ffff800024bb4240,0) at ufs_direnter+0x8fa sys/ufs/ufs/ufs_lookup.c:909 ufs_makeinode(2005,fffffd8068a337b0,ffff800024bb4210,ffff800024bb4240) at ufs_makeinode+0x4cc sys/ufs/ufs/ufs_vnops.c:1856 ufs_mknod(ffff800024bb40b0) at ufs_mknod+0x4e sys/ufs/ufs/ufs_vnops.c:171 end trace frame: 0xffff800024bb4120, count: 0 ddb{0}> trace x86_ipi_db(ffffffff82936ff0) 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(ffffffff82a57c00) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82a57c00) at __mp_lock+0x122 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff82a57c00,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x3bb sys/kern/sched_bsd.c:416 sleep_finish(ffff800024bb3ca0,1) at sleep_finish+0x180 sys/kern/kern_synch.c:420 tsleep(fffffd806823fb48,11,ffffffff8261ca61,0) at tsleep+0x12c sys/kern/kern_synch.c:158 biowait(fffffd806823fb48) at biowait+0x91 sys/kern/vfs_bio.c:1271 bwrite(fffffd806823fb48) at bwrite+0x21b sys/kern/vfs_bio.c:772 VOP_BWRITE(fffffd806823fb48) at VOP_BWRITE+0x4a sys/kern/vfs_vops.c:640 ufs_direnter(fffffd8068a337b0,fffffd8067a3c238,ffff800024bb3ed8,ffff800024bb4240,0) at ufs_direnter+0x8fa sys/ufs/ufs/ufs_lookup.c:909 ufs_makeinode(2005,fffffd8068a337b0,ffff800024bb4210,ffff800024bb4240) at ufs_makeinode+0x4cc sys/ufs/ufs/ufs_vnops.c:1856 ufs_mknod(ffff800024bb40b0) at ufs_mknod+0x4e sys/ufs/ufs/ufs_vnops.c:171 VOP_MKNOD(fffffd8068a337b0,ffff800024bb4210,ffff800024bb4240,ffff800024bb4140) at VOP_MKNOD+0xbf sys/kern/vfs_vops.c:121 domknodat(ffff8000212e3a50,ffffff9c,20000000,80002005,2d94) at domknodat+0x326 sys/kern/vfs_syscalls.c:1632 syscall(ffff800024bb43e0) at syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff800024bb43e0) at syscall+0x435 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc2a6b034980, count: -18 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(ffffffff82593e80) at panic+0x177 sys/kern/subr_prf.c:202 witness_warn(2,0,ffffffff82620d13) at witness_warn+0x65e witness_debugger sys/kern/subr_witness.c:2505 [inline] witness_warn(2,0,ffffffff82620d13) at witness_warn+0x65e sys/kern/subr_witness.c:1473 userret(ffff8000212e2d30) at userret+0x265 sys/kern/kern_sig.c:2012 syscall(ffff80002e56fad0) at syscall+0x57e mi_syscall_return sys/sys/syscall_mi.h:128 [inline] syscall(ffff80002e56fad0) at syscall+0x57e sys/arch/amd64/amd64/trap.c:607 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb48748e920, count: 9 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82593e80) at panic+0x177 sys/kern/subr_prf.c:202 witness_warn(2,0,ffffffff82620d13) at witness_warn+0x65e witness_debugger sys/kern/subr_witness.c:2505 [inline] witness_warn(2,0,ffffffff82620d13) at witness_warn+0x65e sys/kern/subr_witness.c:1473 userret(ffff8000212e2d30) at userret+0x265 sys/kern/kern_sig.c:2012 syscall(ffff80002e56fad0) at syscall+0x57e mi_syscall_return sys/sys/syscall_mi.h:128 [inline] syscall(ffff80002e56fad0) at syscall+0x57e sys/arch/amd64/amd64/trap.c:607 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb48748e920, count: -6