panic: vopp_anic: kernel diagnostic assertion "!_kernel_lock_held()" failed: file "/syzkaller/managers/setuid/kernel/sys/kern/kern_fork.c", line 676 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 9407 92071 32767 0x10 0x4000000 1 syz-executor.0 156460 77363 32767 0x10 0 0 syz-executor.4 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff825a55e6) at panic+0x177 sys/kern/subr_prf.c:198 __assert(ffffffff8261b443,ffffffff825e156e,2a4,ffffffff825d6e7f) at __assert+0x25 sys/kern/subr_prf.c:157 proc_trampoline_mp() at proc_trampoline_mp+0x131 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/setuid/kernel/sys/kern/kern_fork.c", line 676 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff825a55e6) at panic+0x177 sys/kern/subr_prf.c:198 __assert(ffffffff8261b443,ffffffff825e156e,2a4,ffffffff825d6e7f) at __assert+0x25 sys/kern/subr_prf.c:157 proc_trampoline_mp() at proc_trampoline_mp+0x131 end trace frame: 0x0, count: -4 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff8000212fea30 rbx 0xffff800020dd9b8f rdx 0 rcx 0 rax 0xffff80002b03c2a0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x6a0abb86606d91ba r11 0x9cd255fe38dd96c8 r12 0xffff800020dd9990 r13 0 r14 0xffffffff8296d990 cpu_info_full_primary+0x2990 r15 0x1 rip 0xffffffff8228a448 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff8000212fea20 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.0) pid=9407 stat=onproc flags process=10 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff80002aa1a550,0xffff80002b03c550 process=0xffff8000ffffadc0 user=0xffff8000212f9000, vmspace=0xfffffd806bf72a20 estcpu=36, cpticks=2, pctcpu=0.0 user=0, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 97222 453492 65998 32767 2 0x10 syz-executor.7 97222 230863 65998 32767 2 0x4000010 syz-executor.7 92071 393587 78433 32767 2 0x10 syz-executor.0 *92071 9407 78433 32767 7 0x4000010 syz-executor.0 13999 126057 94593 32767 2 0x10 syz-executor.5 13999 439286 94593 32767 3 0x4000090 lockf syz-executor.5 34822 449011 20247 32767 2 0x10 syz-executor.1 20247 11894 11903 0 3 0x82 wait syz-executor.1 77363 156460 88857 32767 7 0x10 syz-executor.4 88857 487143 11903 0 3 0x82 wait syz-executor.4 78433 126662 77040 32767 3 0x90 nanoslp syz-executor.0 77040 411632 11903 0 3 0x82 wait syz-executor.0 92469 213619 21495 32767 3 0x90 nanoslp syz-executor.6 21495 480138 11903 0 3 0x82 wait syz-executor.6 95814 501688 54820 32767 2 0x10 syz-executor.2 54820 135742 11903 0 3 0x82 wait syz-executor.2 94593 176067 49524 32767 3 0x90 nanoslp syz-executor.5 49524 269881 11903 0 3 0x82 wait syz-executor.5 96775 292371 0 0 3 0x14200 bored sosplice 65998 339006 43593 32767 3 0x90 nanoslp syz-executor.7 43593 444819 11903 0 3 0x82 wait syz-executor.7 32108 512705 52487 32767 3 0x90 nanoslp syz-executor.3 52487 424641 11903 0 3 0x82 wait syz-executor.3 11903 155937 4354 0 2 0x82 syz-fuzzer 11903 509427 4354 0 3 0x4000082 nanoslp syz-fuzzer 11903 42934 4354 0 3 0x4000082 thrsleep syz-fuzzer 11903 406732 4354 0 3 0x4000082 wait syz-fuzzer 11903 481307 4354 0 3 0x4000082 wait syz-fuzzer 11903 229182 4354 0 2 0x4000082 syz-fuzzer 11903 300929 4354 0 3 0x4000082 thrsleep syz-fuzzer 11903 368068 4354 0 3 0x4000082 thrsleep syz-fuzzer 11903 165812 4354 0 3 0x4000082 wait syz-fuzzer 11903 395616 4354 0 3 0x4000082 wait syz-fuzzer 11903 351525 4354 0 3 0x4000082 wait syz-fuzzer 11903 51698 4354 0 3 0x4000082 wait syz-fuzzer 11903 344426 4354 0 3 0x4000082 thrsleep syz-fuzzer 11903 513329 4354 0 3 0x4000082 wait syz-fuzzer 11903 511316 4354 0 3 0x4000082 thrsleep syz-fuzzer 11903 298629 4354 0 3 0x4000082 wait syz-fuzzer 4354 420483 65291 0 3 0x10008a sigsusp ksh 65291 477026 77907 0 2 0x9a sshd 74532 56036 1 0 3 0x100083 ttyin getty 77907 493234 1 0 3 0x88 kqread sshd 41156 425168 69178 73 3 0x1100090 kqread syslogd 69178 207172 1 0 3 0x100082 netio syslogd 22343 200042 1 0 3 0x100080 kqread resolvd 90520 353696 81034 77 3 0x100092 kqread dhcpleased 87096 316110 81034 77 3 0x100092 kqread dhcpleased 81034 191132 1 0 3 0x80 kqread dhcpleased 6177 61881 0 0 3 0x14200 bored smr 87842 466253 0 0 2 0x14200 zerothread 32335 145062 0 0 3 0x14200 aiodoned aiodoned 66106 66318 0 0 3 0x14200 syncer update 84490 135898 0 0 3 0x14200 cleaner cleaner 78453 341953 0 0 3 0x14200 reaper reaper 20773 481266 0 0 3 0x14200 pgdaemon pagedaemon 2134 175383 0 0 3 0x14200 bored viomb 77808 440120 0 0 3 0x40014200 acpi0 acpi0 62332 209259 0 0 3 0x40014200 idle1 56387 312801 0 0 3 0x14200 bored softnet 22096 345806 0 0 3 0x14200 bored softnet 408 99042 0 0 3 0x14200 bored softnet 15108 348385 0 0 3 0x14200 bored softnet 25156 262593 0 0 3 0x14200 bored systqmp 83064 175432 0 0 3 0x14200 bored systq 79789 348590 0 0 3 0x40014200 bored softclock 92989 210817 0 0 3 0x40014200 idle0 1 16004 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 34822 (syz-executor.1) thread 0xffff80002b03dce0 (449011) exclusive rrwlock inode r = 0 (0xfffffd8067c73098) #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 ufs_ihashins+0x42 sys/ufs/ufs/ufs_ihash.c:140 #5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1353 #6 ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394 #7 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1150 #8 VOP_MKDIR+0xbf sys/kern/vfs_vops.c:388 #9 domkdirat+0x121 sys/kern/vfs_syscalls.c:3112 #10 syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] #10 syscall+0x435 sys/arch/amd64/amd64/trap.c:585 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd807b17f6f8) #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:412 #6 namei+0x36a sys/kern/vfs_lookup.c:244 #7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3097 #8 syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] #8 syscall+0x435 sys/arch/amd64/amd64/trap.c:585 #9 Xsyscall+0x128 Process 77363 (syz-executor.4) thread 0xffff80002aa1aa90 (156460) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82ba5240) #0 witness_lock+0x44d #1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 #2 mi_switch+0x3bb sys/kern/sched_bsd.c:415 #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+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] #11 syscall+0x435 sys/arch/amd64/amd64/trap.c:585 #12 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806e521a30) #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+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] #12 syscall+0x435 sys/arch/amd64/amd64/trap.c:585 #13 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd807365e2c8) #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:412 #6 namei+0x36a sys/kern/vfs_lookup.c:244 #7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3097 #8 syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] #8 syscall+0x435 sys/arch/amd64/amd64/trap.c:585 #9 Xsyscall+0x128 Process 95814 (syz-executor.2) thread 0xffff80002b03da40 (501688) exclusive rrwlock inode r = 0 (0xfffffd807365e1b8) #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 vn_closefile+0xc6 vn_close sys/kern/vfs_vnops.c:292 [inline] #5 vn_closefile+0xc6 sys/kern/vfs_vnops.c:609 #6 fdrop+0xc7 sys/kern/kern_descrip.c:1274 #7 closef+0x11c sys/kern/kern_descrip.c:1258 #8 syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline] #8 syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10207 6411K 6420K 78643K 11352 0 pcb 13 12K 14K 78643K 17 0 rtable 240 6K 7K 78643K 1378 0 ifaddr 82 17K 17K 78643K 212 0 sysctl 2 0K 2K 78643K 8 0 counters 56 35K 35K 78643K 92 0 ioctlops 0 0K 2K 78643K 228 0 iov 0 0K 32K 78643K 2166 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1271 79K 79K 78643K 2947 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 141 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 2013 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 22 81K 117K 78643K 9067 0 sigio 0 0K 0K 78643K 415 0 proc 56 78K 115K 78643K 1542 0 subproc 104 6K 6K 78643K 338 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 943 0 in_multi 99 6K 6K 78643K 402 0 ether_multi 1 0K 0K 78643K 32 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 187 837K 837K 78643K 187 0 exec 0 0K 2K 78643K 3024 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 337 88K 984K 78643K 57865 0 UVM aobj 131 8K 8K 78643K 140 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 230 0 NDP 11 0K 2K 78643K 81 0 temp 124 4734K 4810K 78643K 26113 0 kqueue 12 18K 28K 78643K 786 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 120 996 0 993 14 13 1 3 0 8 0 rtentry 112 318 0 205 4 0 4 4 0 8 0 unpcb 144 8508 0 8494 84 78 6 10 0 8 5 syncache 296 98 0 98 18 17 1 1 0 8 1 tcpqe 32 27 0 27 7 7 0 1 0 8 0 tcpcb 768 4091 0 4084 128 110 18 18 0 8 17 arp 120 57 0 38 1 0 1 1 0 8 0 ipq 40 83 0 83 5 4 1 1 0 8 1 ipqe 40 393 0 393 5 4 1 1 0 8 1 inpcb 368 13552 0 13542 147 137 10 14 0 8 8 nd6 48 84 0 58 1 0 1 1 0 8 0 kcovpl 48 26 0 18 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1276 0 816 31 2 29 29 0 8 0 art_table 32 1277 0 816 4 0 4 4 0 8 0 art_node 16 317 0 214 1 0 1 1 0 8 0 sysvmsgpl 40 47 0 44 2 1 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 2008 0 1998 1 0 1 1 0 8 0 shmpl 112 137 0 9 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 14524 0 13073 91 0 91 91 0 8 0 ffsino 272 14524 0 13073 97 0 97 97 0 8 0 nchpl 144 28118 0 26482 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 96709 0 96707 2 1 1 2 0 8 0 percpumem 16 58 0 18 1 0 1 1 0 8 0 kstatmem 264 58 0 36 2 0 2 2 0 8 0 scxspl 216 88538 0 88538 35 34 1 8 0 8 1 plimitpl 152 2029 0 2006 14 12 2 2 0 8 0 sigapl 424 9323 0 9271 7 0 7 7 0 8 0 futexpl 64 86133 0 86133 5 4 1 1 0 8 1 knotepl 120 400 0 0 8 0 8 8 0 8 0 kqueuepl 216 3009 0 3001 51 46 5 5 0 8 4 pipepl 320 2612 0 2584 59 56 3 8 0 8 0 fdescpl 496 9305 0 9272 7 2 5 6 0 8 0 filepl 152 74314 0 74073 117 102 15 22 0 8 5 lockfpl 104 1208 0 1204 1 0 1 1 0 8 0 lockfspl 48 373 0 370 1 0 1 1 0 8 0 sessionpl 144 41 0 25 1 0 1 1 0 8 0 pgrppl 48 176 0 160 1 0 1 1 0 8 0 ucredpl 104 10897 0 10879 1 0 1 1 0 8 0 zombiepl 144 9273 0 9271 1 0 1 1 0 8 0 processpl 1064 9323 0 9271 4 0 4 4 0 8 0 procpl 672 27356 0 27286 21 13 8 9 0 8 1 sosppl 168 115 0 115 17 16 1 1 0 8 1 sockpl 488 23213 0 23189 500 488 12 43 0 8 8 mcl64k 65536 25 0 0 3 0 3 3 0 8 0 mcl16k 16384 32 0 0 3 1 2 3 0 8 0 mcl12k 12288 25 0 0 2 0 2 2 0 8 0 mcl9k 9216 17 0 0 2 0 2 2 0 8 0 mcl8k 8192 33 0 0 4 1 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 267 0 0 25 3 22 25 0 8 0 mtagpl 96 5 0 0 1 0 1 1 0 8 0 mbufpl 256 1603 0 0 72 0 72 72 0 8 0 bufpl 288 20119 0 13791 453 0 453 453 0 8 0 anonpl 24 1932038 0 1918848 201 94 107 114 0 186 0 amapchunkpl 152 794364 0 793706 10938 10908 30 4418 0 158 0 amappl16 200 29986 0 29588 169 146 23 34 0 8 1 amappl15 192 1549 0 1538 1 0 1 1 0 8 0 amappl14 184 637 0 632 1 0 1 1 0 8 0 amappl13 176 1236 0 1232 1 0 1 1 0 8 0 amappl12 168 652 0 645 2 1 1 1 0 8 0 amappl11 160 257 0 245 1 0 1 1 0 8 0 amappl10 152 2416 0 2407 1 0 1 1 0 8 0 amappl9 144 2787 0 2777 2 1 1 1 0 8 0 amappl8 136 2370 0 2229 5 0 5 5 0 8 0 amappl7 128 1352 0 1329 1 0 1 1 0 8 0 amappl6 120 2229 0 2204 2 0 2 2 0 8 0 amappl5 112 10318 0 10298 1 0 1 1 0 8 0 amappl4 104 1997 0 1965 2 1 1 2 0 8 0 amappl3 96 29028 0 28972 2 0 2 2 0 8 0 amappl2 88 11391 0 11313 3 1 2 3 0 8 0 amappl1 80 223894 0 223147 26 8 18 21 0 8 0 amappl 88 55440 0 55262 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 72 139 0 9 3 0 3 3 0 8 0 uaddrrnd 24 9306 0 9273 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 9306 0 9273 1 0 1 1 0 8 0 vmmpekpl 168 81435 0 81369 4 0 4 4 0 8 0 vmmpepl 168 932275 0 929448 276 133 143 151 0 357 4 vmsppl 368 9305 0 9273 4 0 4 4 0 8 0 rwobjpl 56 238117 0 230517 118 6 112 112 0 8 0 pdppl 4096 18619 0 18546 322 241 81 91 0 8 8 pvpl 32 3834171 0 3814766 471 289 182 270 0 265 0 pmappl 248 9305 0 9273 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1264 0 388 26 0 26 26 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff8296cff0) 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(ffffffff82ba5038) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82ba5038) at __mp_lock+0x122 sys/kern/kern_lock.c:147 intr_handler(ffff800022331a80,ffff80000067c180) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge24_untramp() at Xintr_ioapic_edge24_untramp+0x18f Xspllower() at Xspllower+0x19 cnputc(5f) at cnputc+0x4b sys/dev/cons.c:218 db_putchar(5f) at db_putchar+0x3fc sys/ddb/db_output.c:155 kprintf() at kprintf+0x20ec sys/kern/subr_prf.c:1064 db_printf(ffffffff8261f3af) at db_printf+0x85 sys/kern/subr_prf.c:498 panic(ffffffff82598f12) at panic+0xd7 sys/kern/subr_prf.c:216 vop_generic_badop(ffff800022331ea8) at vop_generic_badop+0x1b sys/kern/vfs_default.c:133 VOP_STRATEGY(fffffd80736ad058,fffffd80687ae5a0) at VOP_STRATEGY+0x9b sys/kern/vfs_vops.c:628 end trace frame: 0xffff800022331f50, count: 0 ddb{0}> trace x86_ipi_db(ffffffff8296cff0) 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(ffffffff82ba5038) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82ba5038) at __mp_lock+0x122 sys/kern/kern_lock.c:147 intr_handler(ffff800022331a80,ffff80000067c180) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge24_untramp() at Xintr_ioapic_edge24_untramp+0x18f Xspllower() at Xspllower+0x19 cnputc(5f) at cnputc+0x4b sys/dev/cons.c:218 db_putchar(5f) at db_putchar+0x3fc sys/ddb/db_output.c:155 kprintf() at kprintf+0x20ec sys/kern/subr_prf.c:1064 db_printf(ffffffff8261f3af) at db_printf+0x85 sys/kern/subr_prf.c:498 panic(ffffffff82598f12) at panic+0xd7 sys/kern/subr_prf.c:216 vop_generic_badop(ffff800022331ea8) at vop_generic_badop+0x1b sys/kern/vfs_default.c:133 VOP_STRATEGY(fffffd80736ad058,fffffd80687ae5a0) at VOP_STRATEGY+0x9b sys/kern/vfs_vops.c:628 bwrite(fffffd80687ae5a0) at bwrite+0x1f0 sys/kern/vfs_bio.c:760 VOP_BWRITE(fffffd80687ae5a0) at VOP_BWRITE+0x4a sys/kern/vfs_vops.c:640 ufs_mkdir(ffff800022332140) at ufs_mkdir+0x6b4 sys/ufs/ufs/ufs_vnops.c:1236 VOP_MKDIR(fffffd8068e48d80,ffff8000223322a0,ffff8000223322d0,ffff8000223321d0) at VOP_MKDIR+0xbf sys/kern/vfs_vops.c:388 domkdirat(ffff80002aa1aa90,ffffff9c,7f7ffffee980,1ff) at domkdirat+0x121 sys/kern/vfs_syscalls.c:3112 syscall(ffff800022332450) at syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff800022332450) at syscall+0x435 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffee9f0, count: -21 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(ffffffff825a55e6) at panic+0x177 sys/kern/subr_prf.c:198 __assert(ffffffff8261b443,ffffffff825e156e,2a4,ffffffff825d6e7f) at __assert+0x25 sys/kern/subr_prf.c:157 proc_trampoline_mp() at proc_trampoline_mp+0x131 end trace frame: 0x0, count: 11 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff825a55e6) at panic+0x177 sys/kern/subr_prf.c:198 __assert(ffffffff8261b443,ffffffff825e156e,2a4,ffffffff825d6e7f) at __assert+0x25 sys/kern/subr_prf.c:157 proc_trampoline_mp() at proc_trampoline_mp+0x131 end trace frame: 0x0, count: -4