panic: vop_generic_ba dop Stopped at db_en ter+0x1c: addq $ 0x8,%rsp TID PID UID PRFLAGS PFLA GS CPU COMMAND *459921 27116 0 0x2 0 0K syz-executor.5 307180 76123 0 0x2000002 0x40000 00 1 syz-fuzzer db_enter() at db_ente r+0x1c panic(ffffffff8289733 6) at panic+0x17b sys/kern/subr_prf.c:198 vop_generic_badop(fff f8000373bfe08) at vop _generic_badop+0x1f VOP_STRATEGY(fffffd80 6f798958,fffffd807cd5 6138) at VOP_STRATEGY +0x9f bwrite(fffffd807cd561 38) at bwrite+0x1f1 sys/kern/vfs_bio.c:757 VOP_BWRITE(fffffd807c d56138) at VOP_BWRITE +0x4e ufs_mkdir(ffff8000373 c0090) at ufs_mkdir+0 x52c VOP_MKDIR(fffffd80676 280f8,ffff8000373c01f 0,ffff8000373c0220,ff ff8000373c0120) at VO P_MKDIR+0xc3 domkdirat(ffff80002a1 722a8,ffffff9c,7abcf6 9377d0,1ff) at domkdi rat+0x125 syscall(ffff8000373c0 3a0) at syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline] 3a0) at syscall+0x533 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscal l+0x128 end of kernel end trace frame: 0x7a bcf6937840, count: 4 https://www.openbsd.o rg/ddb.html describes the minimum info req uired in bug reports. Insufficien t info makes it diffi cult to find and fix b ugs. ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: vop_generic_badop ddb{0}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82897336) at panic+0x17b sys/kern/subr_prf.c:198 vop_generic_badop(ffff8000373bfe08) at vop_generic_badop+0x1f sys/kern/vfs_default.c:133 VOP_STRATEGY(fffffd806f798958,fffffd807cd56138) at VOP_STRATEGY+0x9f sys/kern/vfs_vops.c:628 bwrite(fffffd807cd56138) at bwrite+0x1f1 sys/kern/vfs_bio.c:757 VOP_BWRITE(fffffd807cd56138) at VOP_BWRITE+0x4e sys/kern/vfs_vops.c:640 ufs_mkdir(ffff8000373c0090) at ufs_mkdir+0x52c sys/ufs/ufs/ufs_vnops.c:1175 VOP_MKDIR(fffffd80676280f8,ffff8000373c01f0,ffff8000373c0220,ffff8000373c0120) at VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 domkdirat(ffff80002a1722a8,ffffff9c,7abcf69377d0,1ff) at domkdirat+0x125 sys/kern/vfs_syscalls.c:3069 syscall(ffff8000373c03a0) at syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline] syscall(ffff8000373c03a0) at syscall+0x533 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7abcf6937840, count: -11 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff8000373bfd30 rbx 0xffffffff82d21cb7 cpu_info_full_primary+0x2cb7 rdx 0 rcx 0xffff80002a1722a8 rax 0xffffffff82d20ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x1e1e16d3ff38b0c9 r11 0x56f18a0e8a366587 r12 0xffffffff82d21ab8 cpu_info_full_primary+0x2ab8 r13 0 r14 0 r15 0x1 rip 0xffffffff8200d05c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff8000373bfd20 ss 0 db_enter+0x1c: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.5) tid=459921 pid=27116 tcnt=1 stat=onproc flags process=2 proc=0 runpri=17, usrpri=80, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a1712b8,0xffff80002a21fd58 process=0xffff8000ffff5ab8 user=0xffff8000373bb000, vmspace=0xfffffd8008ba2540 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 98540 28965 36016 0 2 0 syz-executor.4 98540 485687 36016 0 2 0x4000000 syz-executor.4 75547 480209 8577 0 2 0 syz-executor.0 75547 70983 8577 0 3 0x4000080 fsleep syz-executor.0 81620 282802 76123 0 2 0x2 syz-executor.2 38950 500978 76123 0 2 0x2 syz-executor.1 64694 351103 76123 0 2 0x2 syz-executor.7 13810 517670 76123 0 2 0x2 syz-executor.6 8577 366756 76123 0 3 0x82 nanoslp syz-executor.0 *27116 459921 76123 0 7 0x2 syz-executor.5 16066 122330 0 0 3 0x14200 acct acct 34044 251756 0 0 3 0x14200 bored sosplice 36016 322553 76123 0 3 0x82 nanoslp syz-executor.4 86040 284996 76123 0 3 0x82 nanoslp syz-executor.3 76123 179136 73671 0 3 0x2000082 thrsleep syz-fuzzer 76123 408758 73671 0 3 0x6000082 nanoslp syz-fuzzer 76123 276951 73671 0 3 0x6000082 wait syz-fuzzer 76123 464531 73671 0 3 0x6000082 wait syz-fuzzer 76123 179764 73671 0 3 0x6000082 wait syz-fuzzer 76123 259269 73671 0 3 0x6000082 wait syz-fuzzer 76123 184817 73671 0 3 0x6000082 thrsleep syz-fuzzer 76123 37049 73671 0 3 0x6000082 wait syz-fuzzer 76123 70806 73671 0 3 0x6000082 thrsleep syz-fuzzer 76123 374288 73671 0 3 0x6000082 thrsleep syz-fuzzer 76123 38711 73671 0 3 0x6000082 thrsleep syz-fuzzer 76123 374918 73671 0 2 0x6000002 syz-fuzzer 76123 307180 73671 0 7 0x6000002 syz-fuzzer 76123 363455 73671 0 3 0x6000082 wait syz-fuzzer 76123 452590 73671 0 3 0x6000082 wait syz-fuzzer 76123 161321 73671 0 3 0x6000082 wait syz-fuzzer 73671 106363 3983 0 3 0x10008a sigsusp ksh 3983 83424 53565 0 3 0x9a kqread sshd 88939 209960 1 0 3 0x100083 ttyin getty 53565 288179 1 0 3 0x88 kqread sshd 74346 374649 88805 74 3 0x1100092 bpf pflogd 88805 384360 1 0 3 0x80 netio pflogd 76825 276118 72488 73 3 0x1100090 kqread syslogd 72488 245477 1 0 3 0x100082 netio syslogd 71556 215688 1 0 3 0x100080 kqread resolvd 27564 346563 377 77 3 0x100092 kqread dhcpleased 73925 262068 377 77 3 0x100092 kqread dhcpleased 377 145793 1 0 3 0x80 kqread dhcpleased 86640 217399 0 0 3 0x14200 bored smr 74435 373803 0 0 2 0x14200 zerothread 41688 493756 0 0 3 0x14200 aiodoned aiodoned 89013 132477 0 0 3 0x14200 syncer update 48448 159880 0 0 3 0x14200 cleaner cleaner 2566 509228 0 0 3 0x14200 reaper reaper 44686 366691 0 0 3 0x14200 pgdaemon pagedaemon 74048 2152 0 0 3 0x14200 bored viomb 95739 290670 0 0 3 0x40014200 acpi0 acpi0 99375 383176 0 0 3 0x40014200 idle1 76117 424083 0 0 3 0x14200 bored softnet3 2958 33625 0 0 3 0x14200 bored softnet2 53909 331962 0 0 3 0x14200 bored softnet1 68940 153524 0 0 3 0x14200 bored softnet0 99364 397021 0 0 3 0x14200 bored systqmp 43536 331657 0 0 3 0x14200 bored systq 70654 379140 0 0 3 0x14200 tmoslp softclockmp 43307 284503 0 0 3 0x40014200 tmoslp softclock 45155 103209 0 0 3 0x40014200 idle0 1 332821 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 81620 (syz-executor.2) thread 0xffff80002a220540 (282802) exclusive rrwlock inode r = 0 (0xfffffd8079d9e5f8) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 ufs_ihashins+0x46 sys/ufs/ufs/ufs_ihash.c:140 #5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1230 #6 ffs_inode_alloc+0x1c5 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0xfb sys/ufs/ufs/ufs_vnops.c:1127 #8 VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 #9 domkdirat+0x125 sys/kern/vfs_syscalls.c:3069 #10 syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline] #10 syscall+0x533 sys/arch/amd64/amd64/trap.c:577 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8066f84b40) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0xd5 sys/kern/vfs_lookup.c:418 #6 namei+0x55a sys/kern/vfs_lookup.c:250 #7 domkdirat+0x79 sys/kern/vfs_syscalls.c:3054 #8 syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline] #8 syscall+0x533 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 Process 27116 (syz-executor.5) thread 0xffff80002a1722a8 (459921) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82e12380) #0 witness_lock+0x447 #1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 #2 mi_switch+0x46f sys/kern/sched_bsd.c:470 #3 sleep_finish+0x19b sys/kern/kern_synch.c:414 #4 biowait+0x91 sys/kern/vfs_bio.c:1254 #5 bwrite+0x21c sys/kern/vfs_bio.c:766 #6 ffs_update+0x28b sys/ufs/ffs/ffs_inode.c:111 #7 ufs_mkdir+0x517 sys/ufs/ufs/ufs_vnops.c:1175 #8 VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 #9 domkdirat+0x125 sys/kern/vfs_syscalls.c:3069 #10 syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline] #10 syscall+0x533 sys/arch/amd64/amd64/trap.c:577 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806b4ac810) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vget+0x200 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:1201 #8 ffs_inode_alloc+0x1c5 sys/ufs/ffs/ffs_alloc.c:393 #9 ufs_mkdir+0xfb sys/ufs/ufs/ufs_vnops.c:1127 #10 VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 #11 domkdirat+0x125 sys/kern/vfs_syscalls.c:3069 #12 syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline] #12 syscall+0x533 sys/arch/amd64/amd64/trap.c:577 #13 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8066e10808) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0xd5 sys/kern/vfs_lookup.c:418 #6 namei+0x55a sys/kern/vfs_lookup.c:250 #7 domkdirat+0x79 sys/kern/vfs_syscalls.c:3054 #8 syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline] #8 syscall+0x533 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10207 6549K 6938K 166960K 14661 0 pcb 15 19K 21K 166960K 230 0 rtable 218 14K 15K 166960K 676 0 pf 35 10K 10K 166960K 82 0 ifaddr 43 15K 15K 166960K 89 0 ifgroup 60 2K 2K 166960K 122 0 sysctl 4 1K 1K 166960K 4 0 counters 66 36K 36K 166960K 100 0 ioctlops 0 0K 4K 166960K 1540 0 iov 0 0K 32K 166960K 295 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1438 90K 90K 166960K 2809 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 22 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 532 0 dirhash 12 2K 2K 166960K 30 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 12 41K 85K 166960K 2670 0 sigio 0 0K 0K 166960K 177 0 proc 70 91K 128K 166960K 876 0 subproc 104 6K 6K 166960K 195 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 270 0 in_multi 88 6K 7K 166960K 200 0 ether_multi 1 0K 0K 166960K 5 0 mrt 0 0K 0K 166960K 7 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 139 625K 625K 166960K 139 0 exec 0 0K 1K 166960K 630 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 354 182K 196K 166960K 28419 0 UVM aobj 131 4K 4K 166960K 136 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 122 0 NDP 13 0K 1K 166960K 60 0 temp 74 6772K 6896K 166960K 24563 0 kqueue 12 18K 24K 166960K 225 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 24 0 0 1 0 1 1 0 8 0 rtpcb 120 88 0 85 1 0 1 1 0 8 0 rtentry 112 216 0 117 4 0 4 4 0 8 0 unpcb 144 2921 0 2906 34 33 1 10 0 8 0 syncache 320 20 0 20 8 8 0 1 0 8 0 tcpqe 32 161 0 161 6 6 0 1 0 8 0 tcpcb 808 728 0 719 27 25 2 8 0 8 1 arp 120 40 0 24 1 0 1 1 0 8 0 inpcb 376 2318 0 2306 53 43 10 15 0 8 7 nd6 136 46 0 24 1 0 1 1 0 8 0 pkpcb 40 6 0 6 2 2 0 1 0 8 0 kcovpl 48 15 0 7 1 0 1 1 0 8 0 ppxss 1168 4 0 4 2 2 0 1 0 8 0 pffrag 232 15 0 13 1 0 1 1 0 482 0 pffrnode 88 15 0 13 1 0 1 1 0 8 0 pffrent 40 39 0 37 1 0 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 108 0 96 1 0 1 1 0 8 0 pfstkey 128 108 0 96 2 0 2 2 0 8 0 pfstate 376 108 0 96 4 0 4 4 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 820 0 396 35 8 27 29 0 8 0 art_table 32 821 0 396 4 0 4 4 0 8 0 art_node 16 211 0 122 1 0 1 1 0 8 0 semapl 112 530 0 520 1 0 1 1 0 8 0 shmpl 112 133 0 5 4 0 4 4 0 8 0 dirhash 1024 29 0 12 3 0 3 3 0 8 0 dino2pl 256 4958 0 3505 92 0 92 92 0 8 0 ffsino 272 4958 0 3505 98 0 98 98 0 8 0 nchpl 144 8680 0 7026 64 0 64 64 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 29921 0 29919 3 2 1 2 0 8 0 percpumem 16 64 0 17 1 0 1 1 0 8 0 vcpupl 2048 18 0 0 3 0 3 3 0 8 0 vmpool 696 22 0 4 2 0 2 2 0 8 0 kstatmem 264 60 0 34 2 0 2 2 0 8 0 scxspl 216 25769 0 25769 15 14 1 8 1 8 1 plimitpl 152 248 0 232 1 0 1 1 0 8 0 sigapl 424 2984 0 2938 7 0 7 7 0 8 0 futexpl 64 20265 0 20264 1 0 1 1 0 8 0 knotepl 120 350 0 0 11 0 11 11 0 8 0 kqueuepl 216 593 0 585 11 10 1 5 0 8 0 pipepl 320 570 0 542 18 15 3 8 0 8 0 fdescpl 496 2964 0 2939 6 2 4 5 0 8 0 filepl 152 18858 0 18616 49 34 15 19 0 8 4 lockfpl 104 869 0 867 3 2 1 2 0 8 0 lockfspl 48 289 0 287 1 0 1 1 0 8 0 sessionpl 144 31 0 14 1 0 1 1 0 8 0 pgrppl 48 281 0 264 1 0 1 1 0 8 0 ucredpl 104 2711 0 2699 1 0 1 1 0 8 0 zombiepl 144 2939 0 2938 1 0 1 1 0 8 0 processpl 1136 2984 0 2938 4 0 4 4 0 8 0 procpl 680 7575 0 7512 8 0 8 8 0 8 0 srpgc 96 10 0 10 4 4 0 1 0 8 0 sosppl 168 16 0 16 5 4 1 1 0 8 1 sockpl 584 5404 0 5374 89 79 10 22 0 8 7 mcl64k 65536 17 0 0 3 1 2 3 0 8 0 mcl16k 16384 11 0 0 2 0 2 2 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 12 0 0 1 0 1 1 0 8 0 mcl8k 8192 13 0 0 2 0 2 2 0 8 0 mcl4k 4096 36 0 0 5 2 3 5 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 235 0 0 30 0 30 30 0 8 1 mtagpl 96 233 0 0 6 0 6 6 0 8 0 mbufpl 256 1131 0 0 69 0 69 69 0 8 0 bufpl 280 8114 0 1793 452 0 452 452 0 8 0 anonpl 24 450184 0 436271 146 44 102 111 0 186 0 amapchunkpl 152 90612 0 89832 57 19 38 45 0 158 0 amappl16 200 11253 0 10811 55 30 25 36 0 8 0 amappl15 192 8 0 8 2 2 0 1 0 8 0 amappl14 184 177 0 165 2 1 1 2 0 8 0 amappl13 176 25 0 24 2 1 1 1 0 8 0 amappl12 168 3741 0 3715 3 1 2 2 0 8 0 amappl11 160 60 0 45 1 0 1 1 0 8 0 amappl10 152 33 0 24 2 1 1 1 0 8 0 amappl9 144 168 0 167 1 0 1 1 0 8 0 amappl8 136 300 0 221 3 0 3 3 0 8 0 amappl7 128 213 0 185 2 0 2 2 0 8 0 amappl6 120 413 0 400 1 0 1 1 0 8 0 amappl5 112 168 0 157 1 0 1 1 0 8 0 amappl4 104 547 0 516 2 1 1 2 0 8 0 amappl3 96 17992 0 17919 5 2 3 4 0 8 0 amappl2 88 3523 0 3448 3 1 2 3 0 8 0 amappl1 80 19399 0 18857 23 9 14 23 0 8 0 amappl 88 27765 0 27552 8 1 7 7 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 72 135 0 5 3 0 3 3 0 8 0 uaddrrnd 24 2987 0 2944 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2987 0 2944 1 0 1 1 0 8 0 vmmpekpl 168 28215 0 28149 4 0 4 4 0 8 0 vmmpepl 168 199110 0 196920 212 90 122 136 0 357 8 vmsppl 448 2986 0 2944 7 1 6 6 0 8 0 rwobjpl 56 61550 0 53967 111 3 108 108 0 8 0 pdppl 4096 5981 0 5906 239 154 85 88 0 8 10 pvpl 32 45705 0 0 371 2 369 369 0 265 0 pmappl 248 2986 0 2944 4 0 4 4 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 721 0 276 13 0 13 13 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82897336) at panic+0x17b sys/kern/subr_prf.c:198 vop_generic_badop(ffff8000373bfe08) at vop_generic_badop+0x1f sys/kern/vfs_default.c:133 VOP_STRATEGY(fffffd806f798958,fffffd807cd56138) at VOP_STRATEGY+0x9f sys/kern/vfs_vops.c:628 bwrite(fffffd807cd56138) at bwrite+0x1f1 sys/kern/vfs_bio.c:757 VOP_BWRITE(fffffd807cd56138) at VOP_BWRITE+0x4e sys/kern/vfs_vops.c:640 ufs_mkdir(ffff8000373c0090) at ufs_mkdir+0x52c sys/ufs/ufs/ufs_vnops.c:1175 VOP_MKDIR(fffffd80676280f8,ffff8000373c01f0,ffff8000373c0220,ffff8000373c0120) at VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 domkdirat(ffff80002a1722a8,ffffff9c,7abcf69377d0,1ff) at domkdirat+0x125 sys/kern/vfs_syscalls.c:3069 syscall(ffff8000373c03a0) at syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline] syscall(ffff8000373c03a0) at syscall+0x533 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7abcf6937840, count: -11 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffff800029cebff0) at x86_ipi_db+0x1e 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+0x27 end of kernel end trace frame: 0x2acd110f0, count: 12 ddb{1}> trace x86_ipi_db(ffff800029cebff0) at x86_ipi_db+0x1e 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+0x27 end of kernel end trace frame: 0x2acd110f0, count: -3