panic: vop_generipcani_bca:do p Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 388592 37450 32767 0x10 0x4000000 0 syz-executor.1 * 76004 56758 32767 0x10 0 1 syz-executor.0 db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82785f77) at panic+0x17b sys/kern/subr_prf.c:198 vop_generic_badop(ffff80002c9fadd8) at vop_generic_badop+0x1f sys/kern/vfs_default.c:133 VOP_STRATEGY(fffffd806992e038,fffffd80767ce918) at VOP_STRATEGY+0x9f sys/kern/vfs_vops.c:628 bwrite(fffffd80767ce918) at bwrite+0x1f4 sys/kern/vfs_bio.c:760 VOP_BWRITE(fffffd80767ce918) at VOP_BWRITE+0x4e sys/kern/vfs_vops.c:640 ufs_mkdir(ffff80002c9fb070) at ufs_mkdir+0x6c4 sys/ufs/ufs/ufs_vnops.c:1235 VOP_MKDIR(fffffd806979f0e8,ffff80002c9fb1d0,ffff80002c9fb200,ffff80002c9fb100) at VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 domkdirat(ffff8000212d0dd8,ffffff9c,77137b656ee0,1ff) at domkdirat+0x125 sys/kern/vfs_syscalls.c:3074 syscall(ffff80002c9fb380) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002c9fb380) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:632 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x77137b656f50, 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 675 *cpu1: vop_generic_badop ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82785f77) at panic+0x17b sys/kern/subr_prf.c:198 vop_generic_badop(ffff80002c9fadd8) at vop_generic_badop+0x1f sys/kern/vfs_default.c:133 VOP_STRATEGY(fffffd806992e038,fffffd80767ce918) at VOP_STRATEGY+0x9f sys/kern/vfs_vops.c:628 bwrite(fffffd80767ce918) at bwrite+0x1f4 sys/kern/vfs_bio.c:760 VOP_BWRITE(fffffd80767ce918) at VOP_BWRITE+0x4e sys/kern/vfs_vops.c:640 ufs_mkdir(ffff80002c9fb070) at ufs_mkdir+0x6c4 sys/ufs/ufs/ufs_vnops.c:1235 VOP_MKDIR(fffffd806979f0e8,ffff80002c9fb1d0,ffff80002c9fb200,ffff80002c9fb100) at VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 domkdirat(ffff8000212d0dd8,ffffff9c,77137b656ee0,1ff) at domkdirat+0x125 sys/kern/vfs_syscalls.c:3074 syscall(ffff80002c9fb380) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002c9fb380) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:632 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x77137b656f50, count: -11 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80002c9fad00 rbx 0xffff800020d59b8f rdx 0 rcx 0 rax 0xffff8000212d0dd8 r8 0x101010101010101 r9 0x8080808080808080 r10 0x5d3acd5082a41682 r11 0xe25442098f957eee r12 0xffff800020d59990 r13 0 r14 0 r15 0x1 rip 0xffffffff826a945c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002c9facf0 ss 0 db_enter+0x1c: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.0) pid=76004 stat=onproc flags process=10 proc=0 pri=17, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000212d18b8,0xffff8000212d0b30 process=0xffff80002615c878 user=0xffff80002c9f6000, vmspace=0xfffffd8069e77b00 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 76292 219647 95871 32767 2 0x10 syz-executor.6 28891 169615 30128 32767 2 0x10 syz-executor.7 37450 2114 23532 32767 2 0x10 syz-executor.1 37450 388592 23532 32767 7 0x4000010 syz-executor.1 37450 265284 23532 32767 2 0x4000010 syz-executor.1 71457 13303 32690 32767 2 0x10 syz-executor.2 71457 13070 32690 32767 3 0x4000090 fsleep syz-executor.2 13871 199674 59242 32767 3 0x90 nanoslp syz-executor.5 13871 275660 59242 32767 3 0x4000090 ttyout syz-executor.5 13871 518687 59242 32767 3 0x4000090 fsleep syz-executor.5 95871 476141 92591 32767 2 0x10 syz-executor.6 92591 384839 3434 0 3 0x82 wait syz-executor.6 23532 191136 83021 32767 3 0x90 nanoslp syz-executor.1 83021 228012 3434 0 3 0x82 wait syz-executor.1 30128 117133 96555 32767 3 0x90 nanoslp syz-executor.7 96555 125978 3434 0 3 0x82 wait syz-executor.7 32690 313902 28580 32767 3 0x90 nanoslp syz-executor.2 28580 505359 3434 0 3 0x82 wait syz-executor.2 *56758 76004 90981 32767 7 0x10 syz-executor.0 90981 207772 3434 0 3 0x82 wait syz-executor.0 74130 259702 0 0 3 0x14200 bored sosplice 40621 263849 53449 32767 2 0x10 syz-executor.3 59242 105418 26590 32767 3 0x90 nanoslp syz-executor.5 26590 199598 3434 0 3 0x82 wait syz-executor.5 6981 283821 31201 32767 2 0x10 syz-executor.4 31201 323964 3434 0 3 0x82 wait syz-executor.4 53449 85472 3434 0 3 0x82 wait syz-executor.3 3434 456954 6622 0 3 0x82 wait syz-fuzzer 3434 77660 6622 0 3 0x4000082 nanoslp syz-fuzzer 3434 298835 6622 0 3 0x4000082 thrsleep syz-fuzzer 3434 80882 6622 0 3 0x4000082 wait syz-fuzzer 3434 343228 6622 0 3 0x4000082 thrsleep syz-fuzzer 3434 296403 6622 0 3 0x4000082 wait syz-fuzzer 3434 195673 6622 0 3 0x4000082 wait syz-fuzzer 3434 195368 6622 0 3 0x4000082 thrsleep syz-fuzzer 3434 504203 6622 0 3 0x4000082 thrsleep syz-fuzzer 3434 361837 6622 0 3 0x4000082 wait syz-fuzzer 3434 27763 6622 0 3 0x4000082 thrsleep syz-fuzzer 3434 171591 6622 0 3 0x4000082 wait syz-fuzzer 3434 202072 6622 0 3 0x4000082 wait syz-fuzzer 3434 375824 6622 0 2 0x4000082 syz-fuzzer 3434 36052 6622 0 3 0x4000082 wait syz-fuzzer 3434 472886 6622 0 2 0x4000082 syz-fuzzer 6622 138989 63602 0 3 0x10008a sigsusp ksh 63602 35134 6712 0 2 0x9a sshd 58792 495588 1 0 3 0x100083 ttyin getty 6712 517196 1 0 3 0x88 kqread sshd 41441 196952 48283 73 3 0x1100090 kqread syslogd 48283 81438 1 0 3 0x100082 netio syslogd 45172 180456 1 0 3 0x100080 kqread resolvd 26562 80571 63051 77 3 0x100092 kqread dhcpleased 332 477712 63051 77 3 0x100092 kqread dhcpleased 63051 23060 1 0 3 0x80 kqread dhcpleased 35599 123923 0 0 3 0x14200 bored smr 42007 471949 0 0 2 0x14200 zerothread 91031 317005 0 0 3 0x14200 aiodoned aiodoned 58957 456091 0 0 3 0x14200 syncer update 71973 300734 0 0 3 0x14200 cleaner cleaner 54911 252878 0 0 3 0x14200 reaper reaper 86564 514414 0 0 3 0x14200 pgdaemon pagedaemon 62670 61715 0 0 3 0x14200 bored viomb 88100 428381 0 0 3 0x40014200 acpi0 acpi0 5117 311487 0 0 3 0x40014200 idle1 8866 60143 0 0 3 0x14200 bored softnet3 82434 94614 0 0 3 0x14200 bored softnet2 54985 25264 0 0 3 0x14200 bored softnet1 75692 201460 0 0 3 0x14200 bored softnet0 4528 226432 0 0 3 0x14200 bored systqmp 81591 34299 0 0 3 0x14200 bored systq 94513 475648 0 0 2 0x40014200 softclock 21155 325842 0 0 3 0x40014200 idle0 1 246642 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 56758 (syz-executor.0) thread 0xffff8000212d0dd8 (76004) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82d5ab50) #0 witness_lock+0x44d #1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 #2 mi_switch+0x3c3 sys/kern/sched_bsd.c:405 #3 sleep_finish+0x184 sys/kern/kern_synch.c:417 #4 tsleep+0x12b sys/kern/kern_synch.c:155 #5 biowait+0x91 sys/kern/vfs_bio.c:1278 #6 bwrite+0x21f sys/kern/vfs_bio.c:769 #7 ffs_update+0x281 sys/ufs/ffs/ffs_inode.c:113 #8 ufs_mkdir+0x672 sys/ufs/ufs/ufs_vnops.c:1219 #9 VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 #10 domkdirat+0x125 sys/kern/vfs_syscalls.c:3074 #11 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #11 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:632 #12 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8068b173d8) #0 witness_lock+0x44d #1 rw_enter+0x3e5 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8f sys/kern/kern_rwlock.c:465 #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:1324 #8 ffs_inode_alloc+0x1c2 sys/ufs/ffs/ffs_alloc.c:394 #9 ufs_mkdir+0xf8 sys/ufs/ufs/ufs_vnops.c:1149 #10 VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 #11 domkdirat+0x125 sys/kern/vfs_syscalls.c:3074 #12 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #12 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:632 #13 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8068b175f8) #0 witness_lock+0x44d #1 rw_enter+0x3e5 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8f sys/kern/kern_rwlock.c:465 #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:3059 #8 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #8 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:632 #9 Xsyscall+0x128 Process 40621 (syz-executor.3) thread 0xffff8000212775f0 (263849) exclusive rrwlock inode r = 0 (0xfffffd806e4e32c0) #0 witness_lock+0x44d #1 rw_enter+0x3e5 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8f sys/kern/kern_rwlock.c:465 #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:1324 #8 ufs_lookup+0x13ba sys/ufs/ufs/ufs_lookup.c:487 #9 VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x6f5 sys/kern/vfs_lookup.c:566 #11 namei+0x55a sys/kern/vfs_lookup.c:250 #12 dounlinkat+0x9d sys/kern/vfs_syscalls.c:1848 #13 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #13 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:632 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd80684b83d0) #0 witness_lock+0x44d #1 rw_enter+0x3e5 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8f sys/kern/kern_rwlock.c:465 #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 dounlinkat+0x9d sys/kern/vfs_syscalls.c:1848 #8 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #8 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:632 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10209 6412K 6419K 78643K 11343 0 pcb 13 12K 14K 78643K 17 0 rtable 246 7K 7K 78643K 6843 0 ifaddr 73 24K 24K 78643K 161 0 sysctl 3 1K 1K 78643K 3 0 counters 60 35K 35K 78643K 88 0 ioctlops 0 0K 2K 78643K 178 0 iov 0 0K 32K 78643K 1518 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1279 80K 80K 78643K 5536 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 184 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 4049 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 23 85K 105K 78643K 12428 0 sigio 0 0K 0K 78643K 62 0 proc 56 78K 115K 78643K 1825 0 subproc 104 6K 6K 78643K 286 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 942 0 in_multi 99 6K 7K 78643K 445 0 ether_multi 1 0K 0K 78643K 66 0 mrt 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 247 1102K 1102K 78643K 247 0 exec 0 0K 1K 78643K 2023 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 495 100K 997K 78643K 125627 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 277 0 NDP 11 0K 2K 78643K 69 0 temp 124 5866K 5946K 78643K 33059 0 kqueue 12 18K 26K 78643K 951 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 6628 0 6625 60 58 2 8 0 8 1 rtentry 112 289 0 173 4 0 4 4 0 8 0 unpcb 144 12271 0 12258 111 107 4 10 0 8 3 syncache 296 126 0 126 21 21 0 1 0 8 0 tcpqe 32 212 0 212 15 15 0 1 0 8 0 tcpcb 776 5501 0 5490 137 134 3 14 0 8 1 arp 120 51 0 32 1 0 1 1 0 8 0 ipq 40 24 0 23 8 7 1 1 0 8 0 ipqe 40 262 0 261 8 7 1 1 0 8 0 inpcb 368 11015 0 10999 162 151 11 14 0 8 8 nd6 136 85 0 56 2 0 2 2 0 8 0 kcovpl 48 22 0 14 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1174 0 691 34 3 31 32 0 8 0 art_table 32 1175 0 691 5 0 5 5 0 8 0 art_node 16 288 0 182 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 2 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 4047 0 4037 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 19683 0 18175 95 0 95 95 0 8 0 ffsino 272 19683 0 18175 101 0 101 101 0 8 0 nchpl 144 36369 0 34729 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 132760 0 132759 6 5 1 2 0 8 0 percpumem 16 57 0 14 1 0 1 1 0 8 0 kstatmem 264 50 0 28 2 0 2 2 0 8 0 scxspl 216 118559 0 118559 44 43 1 8 0 8 1 plimitpl 152 2913 0 2889 27 25 2 2 0 8 1 sigapl 424 12684 0 12632 7 0 7 7 0 8 0 futexpl 64 114335 0 114333 5 4 1 1 0 8 0 knotepl 120 493 0 0 6 0 6 6 0 8 0 kqueuepl 216 2859 0 2851 53 48 5 8 0 8 4 pipepl 320 3081 0 3053 70 62 8 9 0 8 5 fdescpl 496 12666 0 12632 6 1 5 5 0 8 0 filepl 152 102023 0 101785 175 157 18 25 0 8 8 lockfpl 104 1169 0 1167 1 0 1 1 0 8 0 lockfspl 48 314 0 312 1 0 1 1 0 8 0 sessionpl 144 37 0 21 1 0 1 1 0 8 0 pgrppl 48 354 0 338 1 0 1 1 0 8 0 ucredpl 104 25593 0 25575 1 0 1 1 0 8 0 zombiepl 144 12632 0 12632 1 0 1 1 0 8 1 processpl 1072 12684 0 12632 4 0 4 4 0 8 0 procpl 696 35612 0 35540 23 14 9 9 0 8 1 sosppl 168 247 0 247 23 22 1 1 0 8 1 sockpl 488 30521 0 30491 606 593 13 35 0 8 8 mcl64k 65536 25 0 0 3 0 3 3 0 8 0 mcl16k 16384 25 0 0 3 0 3 3 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 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 49 0 0 6 1 5 6 0 8 0 mcl2k2 2112 6 0 0 1 0 1 1 0 8 0 mcl2k 2048 646 0 0 49 15 34 42 0 8 0 mtagpl 96 5 0 0 1 0 1 1 0 8 0 mbufpl 256 2584 0 0 118 0 118 118 0 8 0 bufpl 288 25386 0 19074 454 2 452 452 0 8 0 anonpl 24 1313337 0 1300811 188 86 102 112 0 186 0 amapchunkpl 152 776531 0 775657 4557 4484 73 4430 0 158 33 amappl16 200 24981 0 24615 95 69 26 32 0 8 5 amappl15 192 17 0 17 1 1 0 1 0 8 0 amappl14 184 198 0 181 2 1 1 2 0 8 0 amappl13 176 61 0 61 4 4 0 1 0 8 0 amappl12 168 13490 0 13451 2 0 2 2 0 8 0 amappl11 160 54 0 44 1 0 1 1 0 8 0 amappl10 152 91 0 73 1 0 1 1 0 8 0 amappl9 144 400 0 398 2 1 1 2 0 8 0 amappl8 136 893 0 665 8 0 8 8 0 8 0 amappl7 128 180 0 162 1 0 1 1 0 8 0 amappl6 120 477 0 452 2 1 1 2 0 8 0 amappl5 112 459 0 452 1 0 1 1 0 8 0 amappl4 104 1100 0 1058 2 0 2 2 0 8 0 amappl3 96 77065 0 76975 26 22 4 4 0 8 1 amappl2 88 13617 0 13536 4 2 2 3 0 8 0 amappl1 80 52727 0 52205 22 10 12 22 0 8 0 amappl 88 124466 0 124208 9 1 8 8 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 12666 0 12632 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 12666 0 12632 1 0 1 1 0 8 0 vmmpekpl 168 102670 0 102612 4 0 4 4 0 8 0 vmmpepl 168 747629 0 745040 280 139 141 141 0 357 18 vmsppl 464 12665 0 12632 6 1 5 5 0 8 0 rwobjpl 56 188959 0 181352 115 5 110 110 0 8 1 pdppl 4096 25340 0 25264 461 379 82 88 0 8 6 pvpl 32 3768944 0 3750362 558 380 178 338 0 265 0 pmappl 248 12665 0 12632 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1502 0 558 29 1 28 28 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffffffff82c00ff0) 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+0x23 x86_bus_space_io_read_1(3f8,5) at x86_bus_space_io_read_1+0x2c sys/arch/amd64/amd64/bus_space.c:654 comcnputc(800,20) at comcnputc+0x1a7 sys/dev/ic/com.c:1271 cnputc(20) at cnputc+0x4f sys/dev/cons.c:218 db_putchar(6b) at db_putchar+0x316 db_force_whitespace sys/ddb/db_output.c:102 [inline] db_putchar(6b) at db_putchar+0x316 sys/ddb/db_output.c:153 kprintf() at kprintf+0x20fc sys/kern/subr_prf.c:1064 db_printf(ffffffff82815454) at db_printf+0x89 sys/kern/subr_prf.c:498 panic(ffffffff827930dc) at panic+0xdb sys/kern/subr_prf.c:216 __assert(ffffffff82810e7b,ffffffff827d158b,2a3,ffffffff827c99a1) at __assert+0x29 sys/kern/subr_prf.c:157 proc_trampoline_mp() at proc_trampoline_mp+0x135 end trace frame: 0x0, count: 3 ddb{0}> trace x86_ipi_db(ffffffff82c00ff0) 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+0x23 x86_bus_space_io_read_1(3f8,5) at x86_bus_space_io_read_1+0x2c sys/arch/amd64/amd64/bus_space.c:654 comcnputc(800,20) at comcnputc+0x1a7 sys/dev/ic/com.c:1271 cnputc(20) at cnputc+0x4f sys/dev/cons.c:218 db_putchar(6b) at db_putchar+0x316 db_force_whitespace sys/ddb/db_output.c:102 [inline] db_putchar(6b) at db_putchar+0x316 sys/ddb/db_output.c:153 kprintf() at kprintf+0x20fc sys/kern/subr_prf.c:1064 db_printf(ffffffff82815454) at db_printf+0x89 sys/kern/subr_prf.c:498 panic(ffffffff827930dc) at panic+0xdb sys/kern/subr_prf.c:216 __assert(ffffffff82810e7b,ffffffff827d158b,2a3,ffffffff827c99a1) at __assert+0x29 sys/kern/subr_prf.c:157 proc_trampoline_mp() at proc_trampoline_mp+0x135 end trace frame: 0x0, count: -12 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x1c: addq $0x8,%rsp db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82785f77) at panic+0x17b sys/kern/subr_prf.c:198 vop_generic_badop(ffff80002c9fadd8) at vop_generic_badop+0x1f sys/kern/vfs_default.c:133 VOP_STRATEGY(fffffd806992e038,fffffd80767ce918) at VOP_STRATEGY+0x9f sys/kern/vfs_vops.c:628 bwrite(fffffd80767ce918) at bwrite+0x1f4 sys/kern/vfs_bio.c:760 VOP_BWRITE(fffffd80767ce918) at VOP_BWRITE+0x4e sys/kern/vfs_vops.c:640 ufs_mkdir(ffff80002c9fb070) at ufs_mkdir+0x6c4 sys/ufs/ufs/ufs_vnops.c:1235 VOP_MKDIR(fffffd806979f0e8,ffff80002c9fb1d0,ffff80002c9fb200,ffff80002c9fb100) at VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 domkdirat(ffff8000212d0dd8,ffffff9c,77137b656ee0,1ff) at domkdirat+0x125 sys/kern/vfs_syscalls.c:3074 syscall(ffff80002c9fb380) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002c9fb380) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:632 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x77137b656f50, count: 4 ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82785f77) at panic+0x17b sys/kern/subr_prf.c:198 vop_generic_badop(ffff80002c9fadd8) at vop_generic_badop+0x1f sys/kern/vfs_default.c:133 VOP_STRATEGY(fffffd806992e038,fffffd80767ce918) at VOP_STRATEGY+0x9f sys/kern/vfs_vops.c:628 bwrite(fffffd80767ce918) at bwrite+0x1f4 sys/kern/vfs_bio.c:760 VOP_BWRITE(fffffd80767ce918) at VOP_BWRITE+0x4e sys/kern/vfs_vops.c:640 ufs_mkdir(ffff80002c9fb070) at ufs_mkdir+0x6c4 sys/ufs/ufs/ufs_vnops.c:1235 VOP_MKDIR(fffffd806979f0e8,ffff80002c9fb1d0,ffff80002c9fb200,ffff80002c9fb100) at VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 domkdirat(ffff8000212d0dd8,ffffff9c,77137b656ee0,1ff) at domkdirat+0x125 sys/kern/vfs_syscalls.c:3074 syscall(ffff80002c9fb380) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002c9fb380) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:632 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x77137b656f50, count: -11