panic:panic: kernel diagnostic assertion "!_kernel_lock_held()" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/kern_fork.c", line 675 Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 3082 11653 0 0 0x4000000 1 syz-executor.3 48689 53985 0 0x2 0 0 syz-executor.1 db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827923bc) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff82811e33,ffffffff827f1354,2a3,ffffffff827c88ac) at __assert+0x29 sys/kern/subr_prf.c:157 proc_trampoline_mp() at proc_trampoline_mp+0x135 end trace frame: 0x0, count: 11 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: vop_generic_badop cpu1: kernel diagnostic assertion "!_kernel_lock_held()" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/kern_fork.c", line 675 ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827923bc) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff82811e33,ffffffff827f1354,2a3,ffffffff827c88ac) at __assert+0x29 sys/kern/subr_prf.c:157 proc_trampoline_mp() at proc_trampoline_mp+0x135 end trace frame: 0x0, count: -4 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80002e4957d0 rbx 0xffff800020d59b8f rdx 0 rcx 0 rax 0xffff8000212aeb38 r8 0x101010101010101 r9 0x8080808080808080 r10 0x77aca3cf6560f573 r11 0xcf1cce1e7f6153c7 r12 0xffff800020d59990 r13 0 r14 0xffffffff82bb9990 cpu_info_full_primary+0x2990 r15 0x1 rip 0xffffffff81a912dc db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002e4957c0 ss 0 db_enter+0x1c: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.3) pid=3082 stat=onproc flags process=0 proc=4000000 pri=81, usrpri=81, nice=20 forw=0xffffffffffffffff, list=0xffff8000212af360,0xffffffff82c5ed60 process=0xffff8000ffffa5b8 user=0xffff80002e490000, vmspace=0xfffffd806efcd748 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 11653 133650 2686 0 2 0 syz-executor.3 *11653 3082 2686 0 7 0x4000000 syz-executor.3 17318 277789 90988 0 2 0 syz-executor.4 5207 425469 87591 0 2 0 syz-executor.0 5207 415384 87591 0 2 0x4000000 syz-executor.0 73482 462153 72283 0 2 0 syz-executor.6 73482 75558 72283 0 2 0x4000080 syz-executor.6 8128 42273 3065 0 3 0x80 nanoslp syz-executor.7 8128 339755 3065 0 3 0x4000080 fsleep syz-executor.7 8128 170756 3065 0 3 0x4000080 fsleep syz-executor.7 74888 495520 32686 0 2 0 syz-executor.2 74888 110877 32686 0 3 0x4000080 fsleep syz-executor.2 53985 48689 43085 0 7 0x2 syz-executor.1 2686 470307 43085 0 3 0x82 nanoslp syz-executor.3 3065 300978 43085 0 3 0x82 nanoslp syz-executor.7 90988 192175 43085 0 2 0x2 syz-executor.4 43662 480098 0 0 3 0x14280 nfsidl nfsio 96958 417650 0 0 3 0x14280 nfsidl nfsio 54381 169846 0 0 3 0x14280 nfsidl nfsio 1112 522063 0 0 3 0x14280 nfsidl nfsio 38751 142274 0 0 3 0x14280 nfsidl nfsio 2364 302725 0 0 3 0x14280 nfsidl nfsio 87586 437265 0 0 3 0x14280 nfsidl nfsio 95161 91019 0 0 3 0x14280 nfsidl nfsio 35919 228750 0 0 3 0x14280 nfsidl nfsio 97386 438173 0 0 3 0x14280 nfsidl nfsio 94713 227773 0 0 3 0x14280 nfsidl nfsio 1291 397624 0 0 3 0x14280 nfsidl nfsio 36729 134872 0 0 3 0x14280 nfsidl nfsio 79493 397338 0 0 3 0x14280 nfsidl nfsio 68243 346648 0 0 3 0x14280 nfsidl nfsio 14960 279121 0 0 3 0x14280 nfsidl nfsio 82848 372293 0 0 3 0x14280 nfsidl nfsio 78394 395298 0 0 3 0x14280 nfsidl nfsio 31794 252756 0 0 3 0x14280 nfsidl nfsio 52171 287680 0 0 3 0x14280 nfsidl nfsio 29748 416117 0 0 3 0x14200 bored sosplice 74915 42203 43085 0 3 0x2 biowait syz-executor.5 72283 283783 43085 0 3 0x82 nanoslp syz-executor.6 32686 299315 43085 0 3 0x82 nanoslp syz-executor.2 87591 100471 43085 0 3 0x82 nanoslp syz-executor.0 43085 91729 25471 0 3 0x82 kqread syz-fuzzer 43085 79982 25471 0 3 0x4000082 nanoslp syz-fuzzer 43085 513750 25471 0 3 0x4000082 wait syz-fuzzer 43085 110270 25471 0 3 0x4000082 thrsleep syz-fuzzer 43085 113173 25471 0 3 0x4000082 thrsleep syz-fuzzer 43085 58176 25471 0 3 0x4000082 wait syz-fuzzer 43085 43972 25471 0 3 0x4000082 wait syz-fuzzer 43085 367236 25471 0 3 0x4000082 wait syz-fuzzer 43085 198423 25471 0 3 0x4000082 thrsleep syz-fuzzer 43085 517068 25471 0 3 0x4000082 wait syz-fuzzer 43085 449397 25471 0 3 0x4000082 thrsleep syz-fuzzer 43085 57219 25471 0 3 0x4000082 wait syz-fuzzer 43085 84084 25471 0 3 0x4000082 wait syz-fuzzer 43085 304721 25471 0 3 0x4000082 thrsleep syz-fuzzer 43085 363857 25471 0 3 0x4000082 wait syz-fuzzer 43085 333766 25471 0 3 0x4000082 thrsleep syz-fuzzer 25471 164301 66817 0 3 0x10008a sigsusp ksh 66817 118532 76120 0 3 0x9a kqread sshd 89453 376810 1 0 3 0x100083 ttyin getty 76120 117829 1 0 3 0x88 kqread sshd 83153 43699 4300 74 3 0x1100092 bpf pflogd 4300 301314 1 0 3 0x80 netio pflogd 2205 100918 14347 73 3 0x1100090 kqread syslogd 14347 475098 1 0 3 0x100082 netio syslogd 70670 336146 1 0 3 0x100080 kqread resolvd 68894 454444 0 0 3 0x14200 bored smr 12519 130385 0 0 2 0x14200 zerothread 88843 518577 0 0 3 0x14200 aiodoned aiodoned 52452 200314 0 0 3 0x14200 syncer update 77173 39801 0 0 3 0x14200 cleaner cleaner 85381 403276 0 0 3 0x14200 reaper reaper 13596 42242 0 0 3 0x14200 pgdaemon pagedaemon 88216 239223 0 0 3 0x14200 bored viomb 41106 356221 0 0 3 0x40014200 acpi0 acpi0 52330 456298 0 0 3 0x40014200 idle1 39808 20865 0 0 3 0x14200 bored softnet3 96804 184095 0 0 3 0x14200 bored softnet2 68008 317322 0 0 3 0x14200 bored softnet1 77773 367373 0 0 3 0x14200 bored softnet0 29083 368317 0 0 3 0x14200 bored systqmp 44026 432044 0 0 3 0x14200 bored systq 49182 291870 0 0 3 0x40014200 bored softclock 27104 97218 0 0 3 0x40014200 idle0 1 292398 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 53985 (syz-executor.1) thread 0xffff8000212da598 (48689) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82ca8b10) #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 (0xfffffd80660b91a8) #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 (0xfffffd806e344c48) #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 74915 (syz-executor.5) thread 0xffff8000212db078 (42203) exclusive rrwlock inode r = 0 (0xfffffd8067bd2f88) #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 (0xfffffd8067bd2928) #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 10200 6486K 6897K 78643K 12947 0 pcb 13 12K 14K 78643K 540 0 rtable 192 15K 17K 78643K 774 0 ifaddr 75 25K 26K 78643K 400 0 sysctl 3 1K 1K 78643K 3 0 counters 56 35K 36K 78643K 248 0 ioctlops 0 0K 4K 78643K 1583 0 iov 0 0K 28K 78643K 736 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1379 86K 87K 78643K 2726 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 57 0 VM map 2 1K 1K 78643K 2 0 sem 12 3K 5K 78643K 169 0 dirhash 9 1K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 16 57K 85K 78643K 3481 0 sigio 0 0K 0K 78643K 189 0 proc 64 67K 127K 78643K 841 0 subproc 104 6K 6K 78643K 195 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 363 0 in_multi 77 5K 6K 78643K 240 0 ether_multi 1 0K 0K 78643K 18 0 mrt 1 0K 0K 78643K 22 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 163 731K 731K 78643K 163 0 exec 0 0K 1K 78643K 856 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 356 91K 105K 78643K 36219 0 UVM aobj 131 4K 4K 78643K 137 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 41 0 NDP 13 0K 1K 78643K 126 0 temp 133 5866K 6890K 78643K 25594 0 kqueue 6 10K 26K 78643K 239 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 120 112 0 111 1 0 1 1 0 8 0 rtentry 112 256 0 175 4 0 4 4 0 8 0 unpcb 144 5361 0 5353 50 48 2 9 0 8 1 syncache 296 10 0 10 3 3 0 1 0 8 0 tcpqe 32 259 0 259 4 4 0 1 0 8 0 tcpcb 776 764 0 760 27 26 1 8 0 8 0 arp 120 39 0 25 1 0 1 1 0 8 0 inpcb 368 3131 0 3127 42 40 2 10 0 8 1 nd6 136 52 0 33 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 mppekey 1024 2 0 2 1 1 0 1 0 8 0 ppxss 1256 47 0 47 7 7 0 1 0 8 0 pppxif 1456 10 0 10 2 2 0 1 0 8 0 pffrag 232 8 0 8 1 0 1 1 0 482 1 pffrnode 88 8 0 8 1 0 1 1 0 8 1 pffrent 40 25 0 25 2 1 1 1 0 8 1 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfanchor 1288 375 0 0 32 0 32 32 0 8 0 pfstitem 24 120 0 81 1 0 1 1 0 8 0 pfstkey 128 120 0 81 2 0 2 2 0 8 0 pfstate 384 120 0 81 7 2 5 5 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 rttmr 136 6 0 6 2 2 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1223 0 856 35 9 26 29 0 8 0 art_table 32 1224 0 856 4 0 4 4 0 8 0 art_node 16 249 0 178 1 0 1 1 0 8 0 sysvmsgpl 40 15 0 10 1 0 1 1 0 8 0 semupl 112 8 0 8 1 1 0 1 0 8 0 semapl 112 157 0 147 1 0 1 1 0 8 0 shmpl 112 134 0 6 4 0 4 4 0 8 0 dirhash 1024 17 0 10 3 1 2 3 0 8 0 dino2pl 256 6040 0 4595 92 0 92 92 0 8 0 ffsino 272 6040 0 4595 98 0 98 98 0 8 0 nchpl 144 11722 0 11185 63 40 23 63 0 8 0 rtmask 32 3 0 3 1 1 0 1 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 37207 0 37206 3 2 1 2 0 8 0 percpumem 16 137 0 96 1 0 1 1 0 8 0 kstatmem 264 184 0 158 3 1 2 3 0 8 0 scxspl 216 35142 0 35141 14 13 1 8 0 8 0 plimitpl 152 716 0 701 1 0 1 1 0 8 0 sigapl 424 3800 0 3736 9 1 8 8 0 8 0 futexpl 64 34581 0 34578 2 1 1 1 0 8 0 knotepl 120 379 0 0 10 0 10 10 0 8 0 kqueuepl 216 460 0 455 7 6 1 5 0 8 0 pipepl 320 890 0 862 30 27 3 8 0 8 0 fdescpl 496 3762 0 3736 6 2 4 5 0 8 0 filepl 152 26550 0 26330 60 47 13 23 0 8 0 lockfpl 104 1441 0 1440 2 1 1 2 0 8 0 lockfspl 48 579 0 578 1 0 1 1 0 8 0 sessionpl 144 31 0 15 1 0 1 1 0 8 0 pgrppl 48 41 0 25 1 0 1 1 0 8 0 ucredpl 104 3205 0 3196 1 0 1 1 0 8 0 zombiepl 144 3736 0 3736 1 0 1 1 0 8 1 processpl 1072 3800 0 3736 5 0 5 5 0 8 0 procpl 696 9971 0 9886 14 5 9 10 0 8 0 srpgc 96 10 0 10 4 4 0 1 0 8 0 sosppl 168 27 0 27 5 5 0 1 0 8 0 sockpl 488 8611 0 8598 192 182 10 33 0 8 7 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 12 0 0 2 0 2 2 0 8 0 mcl12k 12288 8 0 0 1 0 1 1 0 8 0 mcl9k 9216 10 0 0 1 0 1 1 0 8 0 mcl8k 8192 22 0 0 3 0 3 3 0 8 0 mcl4k 4096 25 0 0 3 0 3 3 0 8 0 mcl2k2 2112 7 0 0 1 0 1 1 0 8 0 mcl2k 2048 400 0 0 49 1 48 49 0 8 0 mtagpl 96 42 0 0 2 1 1 2 0 8 0 mbufpl 256 5506 0 0 344 0 344 344 0 8 0 bufpl 288 9765 0 3448 452 0 452 452 0 8 0 anonpl 24 526583 0 511002 155 42 113 129 0 186 0 amapchunkpl 152 117703 0 116769 75 33 42 50 0 158 1 amappl16 200 12154 0 11644 56 28 28 40 0 8 0 amappl15 192 16 0 16 1 1 0 1 0 8 0 amappl14 184 193 0 181 2 1 1 2 0 8 0 amappl13 176 13 0 13 1 1 0 1 0 8 0 amappl12 168 4531 0 4501 4 2 2 3 0 8 0 amappl11 160 140 0 131 1 0 1 1 0 8 0 amappl10 152 114 0 103 1 0 1 1 0 8 0 amappl9 144 211 0 210 2 1 1 2 0 8 0 amappl8 136 358 0 270 4 0 4 4 0 8 0 amappl7 128 84 0 65 1 0 1 1 0 8 0 amappl6 120 335 0 317 2 1 1 2 0 8 0 amappl5 112 501 0 491 1 0 1 1 0 8 0 amappl4 104 787 0 748 3 1 2 3 0 8 0 amappl3 96 22152 0 22080 3 0 3 3 0 8 0 amappl2 88 4104 0 4049 3 1 2 3 0 8 0 amappl1 80 22311 0 21865 23 11 12 23 0 8 0 amappl 88 35531 0 35302 7 0 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 72 136 0 6 3 0 3 3 0 8 0 uaddrrnd 24 3762 0 3736 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3762 0 3736 1 0 1 1 0 8 0 vmmpekpl 168 33910 0 33847 4 0 4 4 0 8 0 vmmpepl 168 244486 0 242257 185 71 114 132 0 357 6 vmsppl 464 3761 0 3736 5 1 4 5 0 8 0 rwobjpl 56 71239 0 63707 112 3 109 109 0 8 0 pdppl 4096 7532 0 7472 260 196 64 80 0 8 4 pvpl 32 1425991 0 1405021 344 156 188 342 0 265 0 pmappl 248 3761 0 3736 3 1 2 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1401 0 259 33 0 33 33 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffffffff82bb8ff0) 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 __mp_lock(ffffffff82ca8908) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82ca8908) at __mp_lock+0x122 sys/kern/kern_lock.c:147 intr_handler(ffff8000211ef470,ffff80000006ba00) at intr_handler+0x62 sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge21_untramp() at Xintr_ioapic_edge21_untramp+0x18f Xspllower() at Xspllower+0x1d cnputc(3a) at cnputc+0x4f sys/dev/cons.c:218 db_putchar(3a) at db_putchar+0x3fc sys/ddb/db_output.c:155 kprintf() at kprintf+0x6bc sys/kern/subr_prf.c:724 db_printf(ffffffff8281509c) at db_printf+0x89 sys/kern/subr_prf.c:498 panic(ffffffff82786788) at panic+0xdb sys/kern/subr_prf.c:216 vop_generic_badop(ffff8000211ef898) at vop_generic_badop+0x1f sys/kern/vfs_default.c:133 VOP_STRATEGY(fffffd806f457bf0,fffffd80686036e0) at VOP_STRATEGY+0x9f sys/kern/vfs_vops.c:628 end trace frame: 0xffff8000211ef940, count: 0 ddb{0}> trace x86_ipi_db(ffffffff82bb8ff0) 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 __mp_lock(ffffffff82ca8908) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82ca8908) at __mp_lock+0x122 sys/kern/kern_lock.c:147 intr_handler(ffff8000211ef470,ffff80000006ba00) at intr_handler+0x62 sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge21_untramp() at Xintr_ioapic_edge21_untramp+0x18f Xspllower() at Xspllower+0x1d cnputc(3a) at cnputc+0x4f sys/dev/cons.c:218 db_putchar(3a) at db_putchar+0x3fc sys/ddb/db_output.c:155 kprintf() at kprintf+0x6bc sys/kern/subr_prf.c:724 db_printf(ffffffff8281509c) at db_printf+0x89 sys/kern/subr_prf.c:498 panic(ffffffff82786788) at panic+0xdb sys/kern/subr_prf.c:216 vop_generic_badop(ffff8000211ef898) at vop_generic_badop+0x1f sys/kern/vfs_default.c:133 VOP_STRATEGY(fffffd806f457bf0,fffffd80686036e0) at VOP_STRATEGY+0x9f sys/kern/vfs_vops.c:628 bwrite(fffffd80686036e0) at bwrite+0x1f4 sys/kern/vfs_bio.c:760 VOP_BWRITE(fffffd80686036e0) at VOP_BWRITE+0x4e sys/kern/vfs_vops.c:640 ufs_mkdir(ffff8000211efb30) at ufs_mkdir+0x6c4 sys/ufs/ufs/ufs_vnops.c:1235 VOP_MKDIR(fffffd8073cb4570,ffff8000211efc90,ffff8000211efcc0,ffff8000211efbc0) at VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 domkdirat(ffff8000212da598,ffffff9c,76f4b0a35fc0,1ff) at domkdirat+0x125 sys/kern/vfs_syscalls.c:3074 syscall(ffff8000211efe40) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff8000211efe40) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:632 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x76f4b0a36030, count: -21 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(ffffffff827923bc) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff82811e33,ffffffff827f1354,2a3,ffffffff827c88ac) at __assert+0x29 sys/kern/subr_prf.c:157 proc_trampoline_mp() at proc_trampoline_mp+0x135 end trace frame: 0x0, count: 11 ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827923bc) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff82811e33,ffffffff827f1354,2a3,ffffffff827c88ac) at __assert+0x29 sys/kern/subr_prf.c:157 proc_trampoline_mp() at proc_trampoline_mp+0x135 end trace frame: 0x0, count: -4