panic: vop_generic_bpaadnop iStopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 508267 70367 32767 0x10 0 1 syz-executor.1 * 69412 74239 32767 0x10 0 0 syz-executor.6 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff825a0eb4) at panic+0x177 sys/kern/subr_prf.c:198 vop_generic_badop(ffff80002caa0c88) at vop_generic_badop+0x1b sys/kern/vfs_default.c:133 VOP_STRATEGY(fffffd8063160dc8,fffffd80788e3250) at VOP_STRATEGY+0x9b sys/kern/vfs_vops.c:628 bwrite(fffffd80788e3250) at bwrite+0x1f0 sys/kern/vfs_bio.c:760 VOP_BWRITE(fffffd80788e3250) at VOP_BWRITE+0x4a sys/kern/vfs_vops.c:640 ufs_mkdir(ffff80002caa0f20) at ufs_mkdir+0x6b4 sys/ufs/ufs/ufs_vnops.c:1236 VOP_MKDIR(fffffd8069da9630,ffff80002caa1080,ffff80002caa10b0,ffff80002caa0fb0) at VOP_MKDIR+0xbf sys/kern/vfs_vops.c:388 domkdirat(ffff80002964bce0,ffffff9c,7f7ffffd7df0,1ff) at domkdirat+0x121 sys/kern/vfs_syscalls.c:3112 syscall(ffff80002caa1230) at syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff80002caa1230) at syscall+0x438 sys/arch/amd64/amd64/trap.c:599 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd7e60, 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: vop_generic_badop cpu1: kernel diagnostic assertion "!_kernel_lock_held()" failed: file "/syzkaller/managers/setuid/kernel/sys/kern/kern_fork.c", line 673 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff825a0eb4) at panic+0x177 sys/kern/subr_prf.c:198 vop_generic_badop(ffff80002caa0c88) at vop_generic_badop+0x1b sys/kern/vfs_default.c:133 VOP_STRATEGY(fffffd8063160dc8,fffffd80788e3250) at VOP_STRATEGY+0x9b sys/kern/vfs_vops.c:628 bwrite(fffffd80788e3250) at bwrite+0x1f0 sys/kern/vfs_bio.c:760 VOP_BWRITE(fffffd80788e3250) at VOP_BWRITE+0x4a sys/kern/vfs_vops.c:640 ufs_mkdir(ffff80002caa0f20) at ufs_mkdir+0x6b4 sys/ufs/ufs/ufs_vnops.c:1236 VOP_MKDIR(fffffd8069da9630,ffff80002caa1080,ffff80002caa10b0,ffff80002caa0fb0) at VOP_MKDIR+0xbf sys/kern/vfs_vops.c:388 domkdirat(ffff80002964bce0,ffffff9c,7f7ffffd7df0,1ff) at domkdirat+0x121 sys/kern/vfs_syscalls.c:3112 syscall(ffff80002caa1230) at syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff80002caa1230) at syscall+0x438 sys/arch/amd64/amd64/trap.c:599 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd7e60, count: -11 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002caa0bb0 rbx 0xffffffff8294db8f cpu_info_full_primary+0x2b8f rdx 0 rcx 0 rax 0xffff80002964bce0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x6bf2d4d1197055d8 r11 0x3ab1472d9aff786 r12 0xffffffff8294d990 cpu_info_full_primary+0x2990 r13 0 r14 0 r15 0x1 rip 0xffffffff813721b8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80002caa0ba0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.6) pid=69412 stat=onproc flags process=10 proc=0 pri=17, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800029652d30,0xffff80002964ad30 process=0xffff800027c23688 user=0xffff80002ca9c000, vmspace=0xfffffd8065b6f018 estcpu=36, cpticks=3, pctcpu=0.5 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 61413 311595 36868 32767 2 0x10 syz-executor.7 70367 508267 31350 32767 7 0x10 syz-executor.1 48882 130292 62221 32767 2 0x10 syz-executor.2 48882 20269 62221 32767 2 0x4000010 syz-executor.2 38789 318757 78313 32767 2 0x10 syz-executor.4 17438 16533 93032 32767 2 0x10 syz-executor.0 21094 445545 51907 32767 2 0x10 syz-executor.3 51907 341998 29011 0 3 0x82 wait syz-executor.3 49735 204644 0 0 3 0x14200 bored sosplice *74239 69412 48980 32767 7 0x10 syz-executor.6 36868 189362 25781 32767 3 0x90 nanoslp syz-executor.7 83369 108668 14854 32767 2 0x10 syz-executor.5 25781 138597 29011 0 3 0x82 wait syz-executor.7 48980 423811 29011 0 3 0x82 wait syz-executor.6 78313 483282 47266 32767 3 0x90 nanoslp syz-executor.4 14854 422801 29011 0 3 0x82 wait syz-executor.5 47266 43862 29011 0 3 0x82 wait syz-executor.4 31350 96539 79863 32767 3 0x90 nanoslp syz-executor.1 62221 480101 16298 32767 3 0x90 nanoslp syz-executor.2 79863 387974 29011 0 3 0x82 wait syz-executor.1 16298 312308 29011 0 3 0x82 wait syz-executor.2 93032 354328 41001 32767 3 0x90 nanoslp syz-executor.0 41001 278733 29011 0 3 0x82 wait syz-executor.0 29011 432367 62692 0 3 0x82 wait syz-fuzzer 29011 209866 62692 0 3 0x4000082 thrsleep syz-fuzzer 29011 211002 62692 0 3 0x4000082 wait syz-fuzzer 29011 328391 62692 0 3 0x4000082 thrsleep syz-fuzzer 29011 311948 62692 0 3 0x4000082 wait syz-fuzzer 29011 352477 62692 0 3 0x4000082 thrsleep syz-fuzzer 29011 105750 62692 0 3 0x4000082 wait syz-fuzzer 29011 209403 62692 0 3 0x4000082 thrsleep syz-fuzzer 29011 101922 62692 0 3 0x4000082 thrsleep syz-fuzzer 29011 304994 62692 0 3 0x4000082 wait syz-fuzzer 29011 319474 62692 0 3 0x4000082 wait syz-fuzzer 29011 323492 62692 0 3 0x4000082 wait syz-fuzzer 29011 307082 62692 0 3 0x4000082 wait syz-fuzzer 29011 208837 62692 0 3 0x4000082 kqread syz-fuzzer 29011 9408 62692 0 3 0x4000082 thrsleep syz-fuzzer 62692 101635 92072 0 3 0x10008a sigsusp ksh 92072 8579 39231 0 3 0x9a kqread sshd 69190 38199 1 0 3 0x100083 ttyin getty 39231 386498 1 0 3 0x88 kqread sshd 85769 385607 80438 73 3 0x1100090 kqread syslogd 80438 145408 1 0 3 0x100082 netio syslogd 55149 378469 1 0 3 0x100080 kqread resolvd 21723 209097 55575 77 3 0x100092 kqread dhcpleased 28045 46225 55575 77 3 0x100092 kqread dhcpleased 55575 226591 1 0 3 0x80 kqread dhcpleased 4721 175540 0 0 3 0x14200 bored smr 37057 412891 0 0 2 0x14200 zerothread 30542 340899 0 0 3 0x14200 aiodoned aiodoned 31685 444669 0 0 3 0x14200 syncer update 80141 424689 0 0 3 0x14200 cleaner cleaner 37887 135747 0 0 3 0x14200 reaper reaper 73103 258441 0 0 3 0x14200 pgdaemon pagedaemon 56688 142909 0 0 3 0x14200 bored viomb 70845 342962 0 0 3 0x40014200 acpi0 acpi0 9488 359414 0 0 3 0x40014200 idle1 93344 86702 0 0 3 0x14200 bored softnet 83480 170848 0 0 3 0x14200 bored softnet 63637 91714 0 0 3 0x14200 bored softnet 2528 369918 0 0 3 0x14200 bored softnet 7706 458545 0 0 3 0x14200 bored systqmp 3062 95927 0 0 3 0x14200 bored systq 56406 375517 0 0 2 0x40014200 softclock 45713 383621 0 0 3 0x40014200 idle0 1 133632 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 21094 (syz-executor.3) thread 0xffff80002964afc0 (445545) exclusive rrwlock inode r = 0 (0xfffffd806f1302c8) #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+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline] #10 syscall+0x438 sys/arch/amd64/amd64/trap.c:599 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806f1373d0) #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+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline] #8 syscall+0x438 sys/arch/amd64/amd64/trap.c:599 #9 Xsyscall+0x128 Process 74239 (syz-executor.6) thread 0xffff80002964bce0 (69412) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82a2ea20) #0 witness_lock+0x44d #1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 #2 mi_switch+0x3bb sys/kern/sched_bsd.c:415 #3 sleep_finish+0x180 sys/kern/kern_synch.c:417 #4 tsleep+0x12c sys/kern/kern_synch.c:155 #5 biowait+0x91 sys/kern/vfs_bio.c:1268 #6 bwrite+0x21b sys/kern/vfs_bio.c:769 #7 ffs_update+0x27d sys/ufs/ffs/ffs_inode.c:113 #8 ufs_mkdir+0x662 sys/ufs/ufs/ufs_vnops.c:1220 #9 VOP_MKDIR+0xbf sys/kern/vfs_vops.c:388 #10 domkdirat+0x121 sys/kern/vfs_syscalls.c:3112 #11 syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline] #11 syscall+0x438 sys/arch/amd64/amd64/trap.c:599 #12 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8067ede3d8) #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 ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394 #9 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1150 #10 VOP_MKDIR+0xbf sys/kern/vfs_vops.c:388 #11 domkdirat+0x121 sys/kern/vfs_syscalls.c:3112 #12 syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline] #12 syscall+0x438 sys/arch/amd64/amd64/trap.c:599 #13 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8066518920) #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+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline] #8 syscall+0x438 sys/arch/amd64/amd64/trap.c:599 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10222 6413K 6420K 78643K 11320 0 pcb 13 16K 20K 78643K 19 0 rtable 240 6K 7K 78643K 468 0 ifaddr 71 16K 16K 78643K 85 0 sysctl 0 0K 2K 78643K 4 0 counters 60 35K 35K 78643K 64 0 ioctlops 0 0K 2K 78643K 45 0 iov 0 0K 24K 78643K 661 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1272 80K 80K 78643K 1981 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 37 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 656 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 23 85K 117K 78643K 2567 0 sigio 0 0K 0K 78643K 19 0 proc 56 78K 103K 78643K 647 0 subproc 104 6K 6K 78643K 130 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 613 0 in_multi 99 6K 6K 78643K 142 0 ether_multi 1 0K 0K 78643K 3 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 1K 78643K 638 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 306 87K 100K 78643K 19459 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 249 0 NDP 11 0K 2K 78643K 33 0 temp 124 4694K 4758K 78643K 9971 0 kqueue 12 18K 28K 78643K 204 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 120 202 0 199 2 0 2 2 0 8 1 rtentry 112 137 0 24 4 0 4 4 0 8 0 unpcb 144 3404 0 3391 35 30 5 8 0 8 4 syncache 296 29 0 29 6 5 1 1 0 8 1 tcpqe 32 104 0 104 5 4 1 1 0 8 1 tcpcb 776 2281 0 2271 39 31 8 14 0 8 6 arp 120 23 0 4 1 0 1 1 0 8 0 ipq 40 4 0 4 1 1 0 1 0 8 0 ipqe 40 8 0 8 1 1 0 1 0 8 0 inpcb 368 4664 0 4646 51 43 8 24 0 8 6 nd6 48 33 0 7 1 0 1 1 0 8 0 kcovpl 48 10 0 2 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 557 0 101 30 1 29 30 0 8 0 art_table 32 558 0 101 4 0 4 4 0 8 0 art_node 16 136 0 33 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 6 1 0 1 1 0 8 0 semapl 112 654 0 644 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 4969 0 3536 90 0 90 90 0 8 0 ffsino 272 4969 0 3536 96 0 96 96 0 8 0 nchpl 144 8416 0 6789 63 0 63 63 0 8 0 uvmvnodes 80 5108 0 0 105 0 105 105 0 8 0 vnodes 216 5108 0 0 284 0 284 284 0 8 0 namei 1024 29845 0 29843 2 1 1 2 0 8 0 percpumem 16 44 0 2 1 0 1 1 0 8 0 kstatmem 264 26 0 4 2 0 2 2 0 8 0 scxspl 216 23261 0 23261 18 15 3 8 0 8 3 plimitpl 152 544 0 521 7 5 2 2 0 8 1 sigapl 424 2843 0 2791 7 0 7 7 0 8 0 futexpl 64 21516 0 21516 1 0 1 1 0 8 1 knotepl 120 250 0 0 6 0 6 6 0 8 0 kqueuepl 216 636 0 628 9 4 5 5 0 8 4 pipepl 320 728 0 700 17 14 3 8 0 8 0 fdescpl 496 2825 0 2791 7 2 5 6 0 8 0 filepl 152 22722 0 22488 49 32 17 21 0 8 7 lockfpl 104 551 0 549 1 0 1 1 0 8 0 lockfspl 48 88 0 86 1 0 1 1 0 8 0 sessionpl 144 25 0 9 1 0 1 1 0 8 0 pgrppl 48 102 0 86 1 0 1 1 0 8 0 ucredpl 104 4110 0 4092 1 0 1 1 0 8 0 zombiepl 144 2791 0 2791 1 0 1 1 0 8 1 processpl 1072 2843 0 2791 4 0 4 4 0 8 0 procpl 672 7530 0 7463 13 5 8 8 0 8 1 sosppl 168 37 0 37 6 5 1 1 0 8 1 sockpl 488 8390 0 8361 205 184 21 34 0 8 17 mcl64k 65536 13 0 0 2 0 2 2 0 8 0 mcl16k 16384 15 0 0 2 0 2 2 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 11 0 0 1 0 1 1 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 9 0 0 1 0 1 1 0 8 0 mcl2k 2048 271 0 0 34 0 34 34 0 8 0 mtagpl 96 1 0 0 1 0 1 1 0 8 0 mbufpl 256 815 0 0 50 0 50 50 0 8 0 bufpl 288 7459 0 1128 453 0 453 453 0 8 0 anonpl 24 828346 0 815425 214 80 134 138 0 186 23 amapchunkpl 152 56125 0 55439 52 19 33 39 0 158 0 amappl16 200 20088 0 19702 176 130 46 46 0 8 24 amappl15 192 8 0 8 1 1 0 1 0 8 0 amappl14 184 142 0 129 2 0 2 2 0 8 0 amappl13 176 3 0 3 1 1 0 1 0 8 0 amappl12 168 423 0 419 1 0 1 1 0 8 0 amappl11 160 63 0 52 1 0 1 1 0 8 0 amappl10 152 33 0 23 1 0 1 1 0 8 0 amappl9 144 970 0 968 1 0 1 1 0 8 0 amappl8 136 222 0 166 3 0 3 3 0 8 0 amappl7 128 133 0 113 2 1 1 2 0 8 0 amappl6 120 186 0 176 2 1 1 2 0 8 0 amappl5 112 163 0 156 1 0 1 1 0 8 0 amappl4 104 511 0 484 2 1 1 2 0 8 0 amappl3 96 8095 0 8046 2 0 2 2 0 8 0 amappl2 88 3237 0 3162 3 1 2 3 0 8 0 amappl1 80 66015 0 65320 24 6 18 22 0 8 1 amappl 88 18878 0 18688 6 0 6 6 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 2825 0 2791 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2825 0 2791 1 0 1 1 0 8 0 vmmpekpl 168 26346 0 26292 3 0 3 3 0 8 0 vmmpepl 168 277958 0 275268 202 47 155 156 0 357 27 vmsppl 368 2824 0 2791 4 0 4 4 0 8 0 rwobjpl 56 90095 0 83422 108 5 103 103 0 8 3 pdppl 4096 5657 0 5582 149 68 81 91 0 8 6 pvpl 32 1415036 0 1396540 327 99 228 269 0 265 33 pmappl 248 2824 0 2791 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 976 0 115 25 0 25 25 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(ffffffff825a0eb4) at panic+0x177 sys/kern/subr_prf.c:198 vop_generic_badop(ffff80002caa0c88) at vop_generic_badop+0x1b sys/kern/vfs_default.c:133 VOP_STRATEGY(fffffd8063160dc8,fffffd80788e3250) at VOP_STRATEGY+0x9b sys/kern/vfs_vops.c:628 bwrite(fffffd80788e3250) at bwrite+0x1f0 sys/kern/vfs_bio.c:760 VOP_BWRITE(fffffd80788e3250) at VOP_BWRITE+0x4a sys/kern/vfs_vops.c:640 ufs_mkdir(ffff80002caa0f20) at ufs_mkdir+0x6b4 sys/ufs/ufs/ufs_vnops.c:1236 VOP_MKDIR(fffffd8069da9630,ffff80002caa1080,ffff80002caa10b0,ffff80002caa0fb0) at VOP_MKDIR+0xbf sys/kern/vfs_vops.c:388 domkdirat(ffff80002964bce0,ffffff9c,7f7ffffd7df0,1ff) at domkdirat+0x121 sys/kern/vfs_syscalls.c:3112 syscall(ffff80002caa1230) at syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff80002caa1230) at syscall+0x438 sys/arch/amd64/amd64/trap.c:599 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd7e60, count: -11 ddb{0}> machine ddbcpu 1