panic: vpoanpi_cg:e n e r kerince_lb daiadgnop Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 316804 47921 32767 0x10 0x4000000 0 syz-executor.2 *193318 45751 32767 0x10 0 1 syz-executor.3 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82740948) at panic+0x177 sys/kern/subr_prf.c:198 vop_generic_badop(ffff80002616aff8) at vop_generic_badop+0x1b sys/kern/vfs_default.c:133 VOP_STRATEGY(fffffd8069c8e890,fffffd805c32dd88) at VOP_STRATEGY+0x9b sys/kern/vfs_vops.c:628 bwrite(fffffd805c32dd88) at bwrite+0x1f0 sys/kern/vfs_bio.c:760 VOP_BWRITE(fffffd805c32dd88) at VOP_BWRITE+0x4a sys/kern/vfs_vops.c:640 ufs_mkdir(ffff80002616b290) at ufs_mkdir+0x6b4 sys/ufs/ufs/ufs_vnops.c:1236 VOP_MKDIR(fffffd806c078da8,ffff80002616b3f0,ffff80002616b420,ffff80002616b320) at VOP_MKDIR+0xbf sys/kern/vfs_vops.c:388 domkdirat(ffff800021242030,ffffff9c,7f7fffff8520,1ff) at domkdirat+0x121 sys/kern/vfs_syscalls.c:3112 syscall(ffff80002616b5a0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002616b5a0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:625 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff8590, 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 cpu0: kernel diagnostic assertion "!_kernel_lock_held()" failed: file "/syzkaller/managers/setuid/kernel/sys/kern/kern_fork.c", line 674 *cpu1: vop_generic_badop ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82740948) at panic+0x177 sys/kern/subr_prf.c:198 vop_generic_badop(ffff80002616aff8) at vop_generic_badop+0x1b sys/kern/vfs_default.c:133 VOP_STRATEGY(fffffd8069c8e890,fffffd805c32dd88) at VOP_STRATEGY+0x9b sys/kern/vfs_vops.c:628 bwrite(fffffd805c32dd88) at bwrite+0x1f0 sys/kern/vfs_bio.c:760 VOP_BWRITE(fffffd805c32dd88) at VOP_BWRITE+0x4a sys/kern/vfs_vops.c:640 ufs_mkdir(ffff80002616b290) at ufs_mkdir+0x6b4 sys/ufs/ufs/ufs_vnops.c:1236 VOP_MKDIR(fffffd806c078da8,ffff80002616b3f0,ffff80002616b420,ffff80002616b320) at VOP_MKDIR+0xbf sys/kern/vfs_vops.c:388 domkdirat(ffff800021242030,ffffff9c,7f7fffff8520,1ff) at domkdirat+0x121 sys/kern/vfs_syscalls.c:3112 syscall(ffff80002616b5a0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002616b5a0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:625 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff8590, count: -11 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80002616af20 rbx 0xffff800020d69b8f rdx 0 rcx 0 rax 0xffff800021242030 r8 0x101010101010101 r9 0x8080808080808080 r10 0x7ef214c2b99e9ffd r11 0x4cf9f71d339fd784 r12 0xffff800020d69990 r13 0 r14 0 r15 0x1 rip 0xffffffff818c3858 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80002616af10 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.3) pid=193318 stat=onproc flags process=10 proc=0 pri=17, usrpri=81, nice=20 forw=0xffffffffffffffff, list=0xffff8000212295e8,0xffff800021242dd8 process=0xffff8000ffffa9e8 user=0xffff800026166000, vmspace=0xfffffd806bc24010 estcpu=36, cpticks=1, pctcpu=0.3 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 10410 475316 89084 32767 3 0x90 nanoslp syz-executor.1 10410 305131 89084 32767 3 0x4000090 fsleep syz-executor.1 69217 405105 27373 32767 2 0x10 syz-executor.6 69217 277058 27373 32767 2 0x4000010 syz-executor.6 47921 11400 27833 32767 2 0x10 syz-executor.2 47921 507243 27833 32767 3 0x4000090 fsleep syz-executor.2 47921 307987 27833 32767 3 0x4000090 fsleep syz-executor.2 47921 360525 27833 32767 2 0x4000010 syz-executor.2 47921 316804 27833 32767 7 0x4000010 syz-executor.2 5977 171084 59990 32767 3 0x90 nanoslp syz-executor.5 5977 423441 59990 32767 3 0x4000090 lockf syz-executor.5 5977 454371 59990 32767 2 0x4000010 syz-executor.5 5977 436678 59990 32767 3 0x4000090 fsleep syz-executor.5 5977 501964 59990 32767 3 0x4000090 fsleep syz-executor.5 5977 424565 59990 32767 2 0x4000010 syz-executor.5 5977 298639 59990 32767 2 0x4000010 syz-executor.5 5977 16136 59990 32767 3 0x4000090 fsleep syz-executor.5 79289 20243 41747 32767 3 0x90 nanoslp syz-executor.4 41747 197388 79061 0 3 0x82 wait syz-executor.4 81226 334393 9646 32767 2 0x10 syz-executor.7 59990 348420 14329 32767 3 0x90 nanoslp syz-executor.5 27373 211035 66911 32767 3 0x90 nanoslp syz-executor.6 14329 234026 79061 0 3 0x82 wait syz-executor.5 84627 202737 86004 0 3 0x100082 netio arp 66911 142606 79061 0 3 0x82 wait syz-executor.6 9646 390494 79061 0 3 0x82 wait syz-executor.7 86004 399907 80814 0 3 0x10008a sigsusp sh 80814 157455 1 0 3 0x80 wait syz-executor.4 *45751 193318 78183 32767 7 0x10 syz-executor.3 78183 303850 79061 0 3 0x82 wait syz-executor.3 27833 153744 37306 32767 3 0x90 nanoslp syz-executor.2 37306 218898 79061 0 3 0x82 wait syz-executor.2 89084 85201 71145 32767 3 0x90 nanoslp syz-executor.1 46020 219817 44882 32767 2 0x10 syz-executor.0 71145 52688 79061 0 3 0x82 wait syz-executor.1 44882 17125 79061 0 3 0x82 wait syz-executor.0 79061 461413 48913 0 3 0x82 wait syz-fuzzer 79061 91735 48913 0 3 0x4000082 nanoslp syz-fuzzer 79061 298086 48913 0 3 0x4000082 thrsleep syz-fuzzer 79061 368620 48913 0 3 0x4000082 wait syz-fuzzer 79061 330963 48913 0 3 0x4000082 wait syz-fuzzer 79061 6091 48913 0 3 0x4000082 wait syz-fuzzer 79061 295356 48913 0 3 0x4000082 thrsleep syz-fuzzer 79061 506542 48913 0 3 0x4000082 wait syz-fuzzer 79061 437148 48913 0 3 0x4000082 thrsleep syz-fuzzer 79061 331294 48913 0 3 0x4000082 wait syz-fuzzer 79061 346527 48913 0 3 0x4000082 thrsleep syz-fuzzer 79061 204894 48913 0 3 0x4000082 thrsleep syz-fuzzer 79061 124372 48913 0 3 0x4000082 wait syz-fuzzer 79061 109752 48913 0 3 0x4000082 wait syz-fuzzer 79061 257838 48913 0 3 0x4000082 kqread syz-fuzzer 79061 453320 48913 0 3 0x4000082 thrsleep syz-fuzzer 48913 17143 30645 0 3 0x10008a sigsusp ksh 30645 492970 98381 0 3 0x9a kqread sshd 79690 483904 1 0 3 0x100083 ttyin getty 98381 117381 1 0 3 0x88 kqread sshd 99616 125926 90956 73 3 0x1100090 kqread syslogd 90956 321813 1 0 3 0x100082 netio syslogd 31236 57751 1 0 3 0x100080 kqread resolvd 3248 281113 39746 77 3 0x100092 kqread dhcpleased 76825 402056 39746 77 3 0x100092 kqread dhcpleased 39746 79854 1 0 3 0x80 kqread dhcpleased 4502 231918 0 0 3 0x14200 bored smr 57416 497058 0 0 2 0x14200 zerothread 11657 100168 0 0 3 0x14200 aiodoned aiodoned 68657 390789 0 0 3 0x14200 syncer update 75326 23224 0 0 3 0x14200 cleaner cleaner 78519 180344 0 0 3 0x14200 reaper reaper 63291 269136 0 0 3 0x14200 pgdaemon pagedaemon 77113 457936 0 0 3 0x14200 bored viomb 97684 407460 0 0 3 0x40014200 acpi0 acpi0 93555 480402 0 0 3 0x40014200 idle1 33908 175827 0 0 3 0x14200 bored softnet 35811 327941 0 0 3 0x14200 bored softnet 76745 451452 0 0 3 0x14200 bored softnet 43037 441228 0 0 3 0x14200 bored softnet 33540 488294 0 0 3 0x14200 bored systqmp 43537 417926 0 0 3 0x14200 bored systq 85892 115239 0 0 3 0x40014200 bored softclock 65261 8966 0 0 3 0x40014200 idle0 1 209154 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 45751 (syz-executor.3) thread 0xffff800021242030 (193318) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82c2ca98) #0 witness_lock+0x44d #1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 #2 mi_switch+0x3bb sys/kern/sched_bsd.c:405 #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+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #11 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:625 #12 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd80668bd708) #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+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #12 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:625 #13 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8069b98920) #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:418 #6 namei+0x55a sys/kern/vfs_lookup.c:250 #7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3097 #8 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #8 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:625 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10191 6408K 6421K 78643K 11284 0 pcb 13 8K 8K 78643K 13 0 rtable 234 6K 6K 78643K 357 0 ifaddr 73 24K 24K 78643K 79 0 counters 60 35K 35K 78643K 62 0 ioctlops 0 0K 2K 78643K 650 0 iov 0 0K 2K 78643K 686 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1284 80K 80K 78643K 1298 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 13K 78643K 329 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 905 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 25 93K 113K 78643K 20965 0 proc 56 78K 115K 78643K 740 0 subproc 117 7K 7K 78643K 117 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 99 6K 6K 78643K 100 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 1K 78643K 368 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 303 88K 89K 78643K 124506 0 UVM aobj 131 4K 4K 78643K 134 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 11 0K 1K 78643K 28 0 temp 128 5778K 5842K 78643K 46210 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 37 0 33 1 0 1 1 0 8 0 rtentry 112 114 0 4 4 0 4 4 0 8 0 unpcb 144 30586 0 30571 58 54 4 11 0 8 3 syncache 296 4 0 4 1 1 0 1 0 8 0 tcpqe 32 43 0 43 1 1 0 1 0 8 0 tcpcb 776 108 0 104 7 6 1 7 0 8 0 arp 120 19 0 1 1 0 1 1 0 8 0 inpcb 368 221 0 214 5 4 1 5 0 8 0 nd6 48 24 0 0 1 0 1 1 0 8 0 kcovpl 48 9 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 455 0 3 29 0 29 29 0 8 0 art_table 32 456 0 3 4 0 4 4 0 8 0 art_node 16 113 0 13 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 3 1 1 0 1 0 8 0 semapl 112 903 0 893 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 24107 0 22674 90 0 90 90 0 8 0 ffsino 272 24107 0 22674 96 0 96 96 0 8 0 nchpl 144 52819 0 51180 63 0 63 63 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 129686 0 129685 3 2 1 2 0 8 0 percpumem 16 44 0 1 1 0 1 1 0 8 0 kstatmem 264 24 0 2 2 0 2 2 0 8 0 scxspl 216 140982 0 140982 12 11 1 8 0 8 1 plimitpl 152 34 0 10 1 0 1 1 0 8 0 sigapl 424 21252 0 21198 7 0 7 7 0 8 0 futexpl 64 120231 0 120226 2 1 1 1 0 8 0 knotepl 120 106 0 0 4 0 4 4 0 8 0 kqueuepl 216 670 0 662 5 4 1 5 0 8 0 pipepl 320 8171 0 8139 49 45 4 13 0 8 1 fdescpl 496 21235 0 21199 8 2 6 6 0 8 1 filepl 152 88722 0 88464 84 71 13 22 0 8 3 lockfpl 104 1094 0 1090 1 0 1 1 0 8 0 lockfspl 48 98 0 95 1 0 1 1 0 8 0 sessionpl 144 24 0 7 1 0 1 1 0 8 0 pgrppl 48 24 0 7 1 0 1 1 0 8 0 ucredpl 104 81 0 63 1 0 1 1 0 8 0 zombiepl 144 21199 0 21198 2 1 1 1 0 8 0 processpl 1072 21252 0 21198 4 0 4 4 0 8 0 procpl 696 45681 0 45599 12 3 9 9 0 8 1 sockpl 488 30972 0 30946 359 347 12 36 0 8 8 mcl64k 65536 26 0 0 4 1 3 3 0 8 0 mcl16k 16384 25 0 0 4 1 3 3 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 25 0 0 2 0 2 2 0 8 0 mcl8k 8192 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 25 0 0 3 0 3 3 0 8 0 mcl2k2 2112 19 0 0 2 0 2 2 0 8 0 mcl2k 2048 333 0 0 35 7 28 35 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 633 0 0 25 0 25 25 0 8 0 bufpl 288 26134 0 19810 452 0 452 452 0 8 0 anonpl 24 3388708 0 3380298 82 26 56 57 0 186 0 amapchunkpl 152 341816 0 341209 33 7 26 27 0 158 0 amappl16 200 21297 0 21134 10 1 9 9 0 8 0 amappl15 192 8 0 8 1 1 0 1 0 8 0 amappl14 184 149 0 135 2 1 1 2 0 8 0 amappl13 176 3 0 3 1 1 0 1 0 8 0 amappl12 168 412 0 407 1 0 1 1 0 8 0 amappl11 160 43 0 31 1 0 1 1 0 8 0 amappl10 152 45 0 34 1 0 1 1 0 8 0 amappl9 144 1076 0 1076 9 9 0 1 0 8 0 amappl8 136 341 0 269 3 0 3 3 0 8 0 amappl7 128 199 0 174 2 0 2 2 0 8 0 amappl6 120 241 0 232 2 1 1 2 0 8 0 amappl5 112 897 0 891 1 0 1 1 0 8 0 amappl4 104 709 0 675 2 0 2 2 0 8 0 amappl3 96 58354 0 58294 2 0 2 2 0 8 0 amappl2 88 22642 0 22563 3 1 2 3 0 8 0 amappl1 80 453494 0 452693 38 19 19 26 0 8 0 amappl 88 123989 0 123805 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 21235 0 21199 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 21235 0 21199 1 0 1 1 0 8 0 vmmpekpl 168 151250 0 151203 3 0 3 3 0 8 0 vmmpepl 168 1853356 0 1850710 167 37 130 130 0 357 6 vmsppl 440 21234 0 21199 5 0 5 5 0 8 0 rwobjpl 56 441019 0 433618 115 9 106 106 0 8 0 pdppl 4096 42477 0 42398 185 98 87 89 0 8 8 pvpl 32 6816682 0 6802049 383 254 129 361 0 265 1 pmappl 248 21234 0 21199 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 941 0 115 24 0 24 24 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff82bc1ff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0xb sys/dev/kcov.c:144 softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x1f cnputc(6e) at cnputc+0x4b sys/dev/cons.c:218 db_putchar(6e) at db_putchar+0x3fc sys/ddb/db_output.c:155 kprintf() at kprintf+0x20ec sys/kern/subr_prf.c:1064 db_printf(ffffffff827ce835) at db_printf+0x85 sys/kern/subr_prf.c:498 panic(ffffffff8274c9bf) at panic+0xd7 sys/kern/subr_prf.c:216 __assert(ffffffff827cb2dd,ffffffff82789f75,2a2,ffffffff827822c6) at __assert+0x25 sys/kern/subr_prf.c:157 proc_trampoline_mp() at proc_trampoline_mp+0x131 end trace frame: 0x0, count: 2 ddb{0}> trace x86_ipi_db(ffffffff82bc1ff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0xb sys/dev/kcov.c:144 softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x1f cnputc(6e) at cnputc+0x4b sys/dev/cons.c:218 db_putchar(6e) at db_putchar+0x3fc sys/ddb/db_output.c:155 kprintf() at kprintf+0x20ec sys/kern/subr_prf.c:1064 db_printf(ffffffff827ce835) at db_printf+0x85 sys/kern/subr_prf.c:498 panic(ffffffff8274c9bf) at panic+0xd7 sys/kern/subr_prf.c:216 __assert(ffffffff827cb2dd,ffffffff82789f75,2a2,ffffffff827822c6) at __assert+0x25 sys/kern/subr_prf.c:157 proc_trampoline_mp() at proc_trampoline_mp+0x131 end trace frame: 0x0, count: -13 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(ffffffff82740948) at panic+0x177 sys/kern/subr_prf.c:198 vop_generic_badop(ffff80002616aff8) at vop_generic_badop+0x1b sys/kern/vfs_default.c:133 VOP_STRATEGY(fffffd8069c8e890,fffffd805c32dd88) at VOP_STRATEGY+0x9b sys/kern/vfs_vops.c:628 bwrite(fffffd805c32dd88) at bwrite+0x1f0 sys/kern/vfs_bio.c:760 VOP_BWRITE(fffffd805c32dd88) at VOP_BWRITE+0x4a sys/kern/vfs_vops.c:640 ufs_mkdir(ffff80002616b290) at ufs_mkdir+0x6b4 sys/ufs/ufs/ufs_vnops.c:1236 VOP_MKDIR(fffffd806c078da8,ffff80002616b3f0,ffff80002616b420,ffff80002616b320) at VOP_MKDIR+0xbf sys/kern/vfs_vops.c:388 domkdirat(ffff800021242030,ffffff9c,7f7fffff8520,1ff) at domkdirat+0x121 sys/kern/vfs_syscalls.c:3112 syscall(ffff80002616b5a0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002616b5a0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:625 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff8590, count: 4 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82740948) at panic+0x177 sys/kern/subr_prf.c:198 vop_generic_badop(ffff80002616aff8) at vop_generic_badop+0x1b sys/kern/vfs_default.c:133 VOP_STRATEGY(fffffd8069c8e890,fffffd805c32dd88) at VOP_STRATEGY+0x9b sys/kern/vfs_vops.c:628 bwrite(fffffd805c32dd88) at bwrite+0x1f0 sys/kern/vfs_bio.c:760 VOP_BWRITE(fffffd805c32dd88) at VOP_BWRITE+0x4a sys/kern/vfs_vops.c:640 ufs_mkdir(ffff80002616b290) at ufs_mkdir+0x6b4 sys/ufs/ufs/ufs_vnops.c:1236 VOP_MKDIR(fffffd806c078da8,ffff80002616b3f0,ffff80002616b420,ffff80002616b320) at VOP_MKDIR+0xbf sys/kern/vfs_vops.c:388 domkdirat(ffff800021242030,ffffff9c,7f7fffff8520,1ff) at domkdirat+0x121 sys/kern/vfs_syscalls.c:3112 syscall(ffff80002616b5a0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002616b5a0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:625 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff8590, count: -11