panic: vop_generic_badop Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *353502 75729 32767 0x10 0 1K syz-executor.1 335514 93130 0 0x2 0x4000000 0 syz-fuzzer db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff824560e5) at panic+0x177 sys/kern/subr_prf.c:202 vop_generic_badop(ffff80002569ab98) at vop_generic_badop+0x1b sys/kern/vfs_default.c:133 VOP_STRATEGY(fffffd80672909e0) at VOP_STRATEGY+0x99 sys/kern/vfs_vops.c:723 bwrite(fffffd80672909e0) at bwrite+0x1eb sys/kern/vfs_bio.c:763 VOP_BWRITE(fffffd80672909e0) at VOP_BWRITE+0x4a sys/kern/vfs_vops.c:735 ufs_mkdir(ffff80002569ae20) at ufs_mkdir+0x6b0 sys/ufs/ufs/ufs_vnops.c:1248 VOP_MKDIR(fffffd80692c3240,ffff80002569af80,ffff80002569afb0,ffff80002569aeb0) at VOP_MKDIR+0xc6 sys/kern/vfs_vops.c:457 domkdirat(ffff8000212102a0,ffffff9c,7f7ffffe8ee0,1ff) at domkdirat+0x121 sys/kern/vfs_syscalls.c:3065 syscall(ffff80002569b130) at syscall+0x5a9 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002569b130) at syscall+0x5a9 sys/arch/amd64/amd64/trap.c:587 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe8f50, 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: vop_generic_badop ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff824560e5) at panic+0x177 sys/kern/subr_prf.c:202 vop_generic_badop(ffff80002569ab98) at vop_generic_badop+0x1b sys/kern/vfs_default.c:133 VOP_STRATEGY(fffffd80672909e0) at VOP_STRATEGY+0x99 sys/kern/vfs_vops.c:723 bwrite(fffffd80672909e0) at bwrite+0x1eb sys/kern/vfs_bio.c:763 VOP_BWRITE(fffffd80672909e0) at VOP_BWRITE+0x4a sys/kern/vfs_vops.c:735 ufs_mkdir(ffff80002569ae20) at ufs_mkdir+0x6b0 sys/ufs/ufs/ufs_vnops.c:1248 VOP_MKDIR(fffffd80692c3240,ffff80002569af80,ffff80002569afb0,ffff80002569aeb0) at VOP_MKDIR+0xc6 sys/kern/vfs_vops.c:457 domkdirat(ffff8000212102a0,ffffff9c,7f7ffffe8ee0,1ff) at domkdirat+0x121 sys/kern/vfs_syscalls.c:3065 syscall(ffff80002569b130) at syscall+0x5a9 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002569b130) at syscall+0x5a9 sys/arch/amd64/amd64/trap.c:587 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe8f50, count: -11 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80002569aac0 rbx 0xffff800020d39bff rdx 0x8b rcx 0x2 rax 0x19 r8 0xffffffff8136c5a4 kprintf+0x144 r9 0x1 r10 0x356acf2e5b91398c r11 0xa465b237c5c34e9b r12 0xffff800020d39a00 r13 0 r14 0 r15 0x1 rip 0xffffffff817e8be8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80002569aab0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.1) pid=353502 stat=onproc flags process=10 proc=0 pri=17, usrpri=63, nice=20 forw=0xffffffffffffffff, list=0xffff800021210540,0xffff800021210010 process=0xffff80002120a190 user=0xffff800025696000, vmspace=0xfffffd807effa450 estcpu=36, cpticks=0, pctcpu=0.5 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 73571 473142 0 0 3 0x14200 bored sosplice *75729 353502 53631 32767 7 0x10 syz-executor.1 64589 68166 66358 32767 2 0x10 syz-executor.0 53631 281078 93130 0 3 0x82 wait syz-executor.1 66358 40038 93130 0 3 0x82 wait syz-executor.0 93130 436439 58462 0 3 0x82 thrsleep syz-fuzzer 93130 313416 58462 0 3 0x4000082 nanoslp syz-fuzzer 93130 100305 58462 0 3 0x4000082 thrsleep syz-fuzzer 93130 335514 58462 0 7 0x4000002 syz-fuzzer 93130 225387 58462 0 3 0x4000082 thrsleep syz-fuzzer 93130 503457 58462 0 3 0x4000082 thrsleep syz-fuzzer 93130 20759 58462 0 3 0x4000082 thrsleep syz-fuzzer 93130 507224 58462 0 3 0x4000082 kqread syz-fuzzer 58462 345713 55861 0 3 0x10008a sigsusp ksh 55861 353536 13484 0 2 0x12 sshd 11774 270652 1 0 3 0x100083 ttyin getty 13484 27915 1 0 3 0x88 select sshd 95382 403222 15495 73 3 0x100090 kqread syslogd 15495 524135 1 0 3 0x100082 netio syslogd 91586 185039 1 0 3 0x100080 kqread resolvd 31953 92698 38315 77 3 0x100092 kqread dhcpleased 33545 192017 38315 77 3 0x100092 kqread dhcpleased 38315 399632 1 0 3 0x80 kqread dhcpleased 49829 342341 0 0 3 0x14200 bored smr 45829 309512 0 0 3 0x14200 pgzero zerothread 44988 203132 0 0 3 0x14200 aiodoned aiodoned 88333 360521 0 0 3 0x14200 syncer update 81612 97530 0 0 3 0x14200 cleaner cleaner 18291 40511 0 0 3 0x14200 reaper reaper 30022 344314 0 0 3 0x14200 pgdaemon pagedaemon 30960 445227 0 0 3 0x14200 bored crynlk 89738 73573 0 0 3 0x14200 bored crypto 60033 3397 0 0 3 0x14200 bored viomb 16516 175813 0 0 3 0x40014200 acpi0 acpi0 53628 108873 0 0 3 0x40014200 idle1 3091 490548 0 0 3 0x14200 bored softnet 49782 385749 0 0 3 0x14200 bored systqmp 37466 90300 0 0 3 0x14200 bored systq 23169 163564 0 0 3 0x40014200 bored softclock 69810 404820 0 0 3 0x40014200 idle0 1 487945 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 75729 (syz-executor.1) thread 0xffff8000212102a0 (353502) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff828e2720) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 __mp_acquire_count+0x4c sys/kern/kern_lock.c:227 #2 mi_switch+0x3d3 sys/kern/sched_bsd.c:433 #3 sleep_finish+0x1b2 sys/kern/kern_synch.c:433 #4 tsleep+0x125 sys/kern/kern_synch.c:158 #5 biowait+0x91 sys/kern/vfs_bio.c:1271 #6 bwrite+0x216 sys/kern/vfs_bio.c:772 #7 ffs_update+0x2b5 sys/ufs/ffs/ffs_inode.c:113 #8 ufs_mkdir+0x65e sys/ufs/ufs/ufs_vnops.c:1232 #9 VOP_MKDIR+0xc6 sys/kern/vfs_vops.c:457 #10 domkdirat+0x121 sys/kern/vfs_syscalls.c:3065 #11 syscall+0x5a9 mi_syscall sys/sys/syscall_mi.h:102 [inline] #11 syscall+0x5a9 sys/arch/amd64/amd64/trap.c:587 #12 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806a7c15e8) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 rw_enter+0x3e2 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:614 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 vget+0x1eb 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:1321 #8 ffs_inode_alloc+0x1c3 sys/ufs/ffs/ffs_alloc.c:394 #9 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1162 #10 VOP_MKDIR+0xc6 sys/kern/vfs_vops.c:457 #11 domkdirat+0x121 sys/kern/vfs_syscalls.c:3065 #12 syscall+0x5a9 mi_syscall sys/sys/syscall_mi.h:102 [inline] #12 syscall+0x5a9 sys/arch/amd64/amd64/trap.c:587 #13 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806a7c1a28) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 rw_enter+0x3e2 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:614 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 vfs_lookup+0xdd sys/kern/vfs_lookup.c:413 #6 namei+0x55a sys/kern/vfs_lookup.c:245 #7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3050 #8 syscall+0x5a9 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x5a9 sys/arch/amd64/amd64/trap.c:587 #9 Xsyscall+0x128 Process 64589 (syz-executor.0) thread 0xffff800021210540 (68166) exclusive rrwlock inode r = 0 (0xfffffd806a7c14d8) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 rw_enter+0x3e2 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:614 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 vget+0x1eb 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:1321 #8 ufs_lookup+0x145f sys/ufs/ufs/ufs_lookup.c:487 #9 VOP_LOOKUP+0x5b sys/kern/vfs_vops.c:88 #10 vfs_lookup+0x737 sys/kern/vfs_lookup.c:561 #11 namei+0x55a sys/kern/vfs_lookup.c:245 #12 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1849 #13 syscall+0x5a9 mi_syscall sys/sys/syscall_mi.h:102 [inline] #13 syscall+0x5a9 sys/arch/amd64/amd64/trap.c:587 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806a7c1b38) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 rw_enter+0x3e2 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:614 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 vfs_lookup+0xdd sys/kern/vfs_lookup.c:413 #6 namei+0x55a sys/kern/vfs_lookup.c:245 #7 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1849 #8 syscall+0x5a9 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x5a9 sys/arch/amd64/amd64/trap.c:587 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10115 6407K 6433K 78643K 11205 0 pcb 13 8K 8K 78643K 13 0 rtable 108 3K 3K 78643K 175 0 ifaddr 39 10K 10K 78643K 39 0 counters 44 34K 34K 78643K 44 0 ioctlops 0 0K 2K 78643K 27 0 iov 0 0K 8K 78643K 36 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1216 76K 76K 78643K 1233 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 1K 1K 78643K 87 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 6 17K 33K 78643K 286 0 proc 56 74K 99K 78643K 279 0 subproc 34 2K 2K 78643K 34 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 33 2K 2K 78643K 33 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 37 175K 175K 78643K 37 0 exec 0 0K 2K 78643K 383 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 187 29K 37K 78643K 4957 0 UVM aobj 8 2K 2K 78643K 8 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 5 0K 0K 78643K 9 0 temp 102 4213K 4277K 78643K 2695 0 kqueue 10 14K 16K 78643K 16 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 26 0 23 1 0 1 1 0 8 0 rtentry 112 46 0 1 2 0 2 2 0 8 0 unpcb 120 106 0 93 1 0 1 1 0 8 0 syncache 296 4 0 4 1 1 0 1 0 8 0 tcpqe 32 446 0 446 1 1 0 1 0 8 0 tcpcb 736 28 0 24 1 0 1 1 0 8 0 arp 120 6 0 0 1 0 1 1 0 8 0 inpcb 304 95 0 88 2 0 2 2 0 8 1 nd6 48 7 0 0 1 0 1 1 0 8 0 kcovpl 48 2 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 190 0 0 12 0 12 12 0 8 0 art_table 32 191 0 0 2 0 2 2 0 8 0 art_node 16 45 0 4 1 0 1 1 0 8 0 sysvmsgpl 40 31 0 21 1 0 1 1 0 8 0 semupl 112 15 0 15 1 0 1 1 0 8 1 semapl 112 71 0 61 1 0 1 1 0 8 0 shmpl 112 5 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1707 0 304 88 0 88 88 0 8 0 ffsino 272 1707 0 304 94 0 94 94 0 8 0 nchpl 144 2244 0 632 60 0 60 60 0 8 0 uvmvnodes 72 1750 0 0 32 0 32 32 0 8 0 vnodes 224 1750 0 0 103 0 103 103 0 8 0 namei 1024 5764 0 5763 1 0 1 1 0 8 0 percpumem 16 34 0 0 1 0 1 1 0 8 0 scxspl 216 6678 0 6678 9 1 8 8 0 8 8 plimitpl 152 26 0 16 1 0 1 1 0 8 0 sigapl 424 510 0 476 5 0 5 5 0 8 1 futexpl 56 2784 0 2784 1 0 1 1 0 8 1 knotepl 112 50 0 0 2 0 2 2 0 8 0 kqueuepl 216 285 0 279 2 0 2 2 0 8 1 pipepl 336 97 0 87 2 0 2 2 0 8 1 fdescpl 496 493 0 476 3 0 3 3 0 8 0 filepl 152 2040 0 1931 5 0 5 5 0 8 0 lockfpl 104 56 0 54 1 0 1 1 0 8 0 lockfspl 48 19 0 17 1 0 1 1 0 8 0 sessionpl 144 17 0 7 1 0 1 1 0 8 0 pgrppl 48 17 0 7 1 0 1 1 0 8 0 ucredpl 96 241 0 229 1 0 1 1 0 8 0 zombiepl 144 476 0 476 1 0 1 1 0 8 1 processpl 1072 510 0 476 3 0 3 3 0 8 0 procpl 672 840 0 799 5 0 5 5 0 8 1 sosppl 168 10 0 10 1 0 1 1 0 8 1 sockpl 480 232 0 209 4 0 4 4 0 8 1 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 7 0 0 1 0 1 1 0 8 0 mcl2k 2048 242 0 0 30 0 30 30 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 481 0 0 30 0 30 30 0 8 0 bufpl 280 3836 0 157 263 0 263 263 0 8 0 anonpl 24 108147 0 97263 71 1 70 70 0 186 3 amapchunkpl 152 11207 0 10677 26 1 25 25 0 158 1 amappl16 200 777 0 508 16 1 15 15 0 8 0 amappl15 192 204 0 197 1 0 1 1 0 8 0 amappl14 184 4 0 3 1 0 1 1 0 8 0 amappl13 176 27 0 26 1 0 1 1 0 8 0 amappl12 168 3 0 1 1 0 1 1 0 8 0 amappl11 160 68 0 52 1 0 1 1 0 8 0 amappl10 152 11 0 7 1 0 1 1 0 8 0 amappl9 144 185 0 181 1 0 1 1 0 8 0 amappl8 136 333 0 297 2 0 2 2 0 8 0 amappl7 128 59 0 50 1 0 1 1 0 8 0 amappl6 120 176 0 166 1 0 1 1 0 8 0 amappl5 112 1033 0 1014 1 0 1 1 0 8 0 amappl4 104 516 0 493 1 0 1 1 0 8 0 amappl3 96 157 0 142 1 0 1 1 0 8 0 amappl2 88 329 0 293 2 1 1 2 0 8 0 amappl1 80 11522 0 11105 12 2 10 12 0 8 0 amappl 88 4605 0 4473 4 0 4 4 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 64 7 0 0 1 0 1 1 0 8 0 uaddrrnd 24 493 0 476 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 493 0 476 1 0 1 1 0 8 0 vmmpekpl 168 7441 0 7419 2 0 2 2 0 8 0 vmmpepl 168 54181 0 52648 77 0 77 77 0 357 4 vmsppl 368 492 0 476 2 0 2 2 0 8 0 rwobjpl 56 12527 0 11577 18 3 15 15 0 8 1 pdppl 4096 994 0 952 64 14 50 50 0 8 8 pvpl 32 299794 0 285491 132 7 125 132 0 265 6 pmappl 224 492 0 476 2 0 2 2 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 335 0 16 10 0 10 10 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff8278dff0) 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(ffffffff828e2518) at __mp_lock+0x12e __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828e2518) at __mp_lock+0x12e sys/kern/kern_lock.c:147 pipeselwakeup(fffffd806fa91870) at pipeselwakeup+0x4e sys/kern/sys_pipe.c:366 pipe_write(fffffd806e5d9bf0,ffff80002122fc98,0) at pipe_write+0x771 dofilewritev(ffff8000ffff7a50,14,ffff80002122fc98,0,ffff80002122fd80) at dofilewritev+0x1a3 sys/kern/sys_generic.c:365 sys_write(ffff8000ffff7a50,ffff80002122fd30,ffff80002122fd80) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff80002122fe00) at syscall+0x5a9 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002122fe00) at syscall+0x5a9 sys/arch/amd64/amd64/trap.c:587 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2c71715e0, count: 5 ddb{0}> trace x86_ipi_db(ffffffff8278dff0) 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(ffffffff828e2518) at __mp_lock+0x12e __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828e2518) at __mp_lock+0x12e sys/kern/kern_lock.c:147 pipeselwakeup(fffffd806fa91870) at pipeselwakeup+0x4e sys/kern/sys_pipe.c:366 pipe_write(fffffd806e5d9bf0,ffff80002122fc98,0) at pipe_write+0x771 dofilewritev(ffff8000ffff7a50,14,ffff80002122fc98,0,ffff80002122fd80) at dofilewritev+0x1a3 sys/kern/sys_generic.c:365 sys_write(ffff8000ffff7a50,ffff80002122fd30,ffff80002122fd80) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff80002122fe00) at syscall+0x5a9 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002122fe00) at syscall+0x5a9 sys/arch/amd64/amd64/trap.c:587 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2c71715e0, count: -10 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:440 panic(ffffffff824560e5) at panic+0x177 sys/kern/subr_prf.c:202 vop_generic_badop(ffff80002569ab98) at vop_generic_badop+0x1b sys/kern/vfs_default.c:133 VOP_STRATEGY(fffffd80672909e0) at VOP_STRATEGY+0x99 sys/kern/vfs_vops.c:723 bwrite(fffffd80672909e0) at bwrite+0x1eb sys/kern/vfs_bio.c:763 VOP_BWRITE(fffffd80672909e0) at VOP_BWRITE+0x4a sys/kern/vfs_vops.c:735 ufs_mkdir(ffff80002569ae20) at ufs_mkdir+0x6b0 sys/ufs/ufs/ufs_vnops.c:1248 VOP_MKDIR(fffffd80692c3240,ffff80002569af80,ffff80002569afb0,ffff80002569aeb0) at VOP_MKDIR+0xc6 sys/kern/vfs_vops.c:457 domkdirat(ffff8000212102a0,ffffff9c,7f7ffffe8ee0,1ff) at domkdirat+0x121 sys/kern/vfs_syscalls.c:3065 syscall(ffff80002569b130) at syscall+0x5a9 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002569b130) at syscall+0x5a9 sys/arch/amd64/amd64/trap.c:587 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe8f50, count: 4 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff824560e5) at panic+0x177 sys/kern/subr_prf.c:202 vop_generic_badop(ffff80002569ab98) at vop_generic_badop+0x1b sys/kern/vfs_default.c:133 VOP_STRATEGY(fffffd80672909e0) at VOP_STRATEGY+0x99 sys/kern/vfs_vops.c:723 bwrite(fffffd80672909e0) at bwrite+0x1eb sys/kern/vfs_bio.c:763 VOP_BWRITE(fffffd80672909e0) at VOP_BWRITE+0x4a sys/kern/vfs_vops.c:735 ufs_mkdir(ffff80002569ae20) at ufs_mkdir+0x6b0 sys/ufs/ufs/ufs_vnops.c:1248 VOP_MKDIR(fffffd80692c3240,ffff80002569af80,ffff80002569afb0,ffff80002569aeb0) at VOP_MKDIR+0xc6 sys/kern/vfs_vops.c:457 domkdirat(ffff8000212102a0,ffffff9c,7f7ffffe8ee0,1ff) at domkdirat+0x121 sys/kern/vfs_syscalls.c:3065 syscall(ffff80002569b130) at syscall+0x5a9 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002569b130) at syscall+0x5a9 sys/arch/amd64/amd64/trap.c:587 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe8f50, count: -11