panipanic: kernel diagnostic assertion "!_kernel_lock_held()" failed: file "/syzkaller/managers/setuid/kernel/sys/kern/kern_fork.c", line 675 Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *143039 43754 32767 0x10 0 1 syz-executor.6 390402 2738 32767 0x10 0 0 syz-executor.4 db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8278e492) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8280fd84,ffffffff827d111b,2a3,ffffffff827c912f) 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/setuid/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(ffffffff8278e492) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8280fd84,ffffffff827d111b,2a3,ffffffff827c912f) 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 0xffff800021290eb0 rbx 0xffff800020d59b8f rdx 0 rcx 0 rax 0xffff800021237b58 r8 0x101010101010101 r9 0x8080808080808080 r10 0x766df71d24971f87 r11 0x537a3c017ea34e7d r12 0xffff800020d59990 r13 0 r14 0xffffffff82bfe990 cpu_info_full_primary+0x2990 r15 0x1 rip 0xffffffff812a8e1c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff800021290ea0 ss 0 db_enter+0x1c: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.6) pid=143039 stat=onproc flags process=10 proc=0 pri=79, usrpri=79, nice=20 forw=0xffffffffffffffff, list=0xffff800021237330,0xffff800021236dd0 process=0xffff8000ffff7ab8 user=0xffff80002128c000, vmspace=0xfffffd80669e6b08 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND *43754 143039 48671 32767 7 0x10 syz-executor.6 63811 66021 36045 32767 2 0x10 syz-executor.0 63811 269771 36045 32767 2 0x4000010 syz-executor.0 63811 397106 36045 32767 2 0x4000010 syz-executor.0 63811 142682 36045 32767 2 0x4000010 syz-executor.0 63250 278643 17701 32767 2 0x10 syz-executor.1 63250 124979 17701 32767 2 0x4000010 syz-executor.1 63250 363207 17701 32767 2 0x4000010 syz-executor.1 53449 236311 68534 32767 2 0x10 syz-executor.2 36045 470118 81185 32767 3 0x90 nanoslp syz-executor.0 81185 519161 84697 0 3 0x82 wait syz-executor.0 17701 455159 1 32767 3 0x90 nanoslp syz-executor.1 85819 457681 34032 32767 2 0x10 syz-executor.7 34032 214406 84697 0 3 0x82 wait syz-executor.7 48671 439895 45431 32767 3 0x90 nanoslp syz-executor.6 45431 426666 84697 0 3 0x82 wait syz-executor.6 84264 224150 0 0 3 0x14200 bored sosplice 92536 65719 23754 32767 3 0x10 biowait syz-executor.5 46659 522371 82838 32767 2 0x10 syz-executor.3 23754 385632 84697 0 3 0x82 wait syz-executor.5 82838 48963 84697 0 3 0x82 wait syz-executor.3 2738 390402 25782 32767 7 0x10 syz-executor.4 25782 407146 84697 0 3 0x82 wait syz-executor.4 68534 105687 60779 32767 3 0x90 nanoslp syz-executor.2 60779 431094 84697 0 3 0x82 wait syz-executor.2 84697 260942 20195 0 3 0x82 wait syz-fuzzer 84697 320892 20195 0 3 0x4000082 nanoslp syz-fuzzer 84697 332348 20195 0 3 0x4000082 thrsleep syz-fuzzer 84697 109923 20195 0 3 0x4000082 thrsleep syz-fuzzer 84697 239642 20195 0 3 0x4000082 thrsleep syz-fuzzer 84697 511951 20195 0 2 0x4000082 syz-fuzzer 84697 288499 20195 0 3 0x4000082 wait syz-fuzzer 84697 309971 20195 0 2 0x4000082 syz-fuzzer 84697 233981 20195 0 3 0x4000082 thrsleep syz-fuzzer 84697 403895 20195 0 3 0x4000082 thrsleep syz-fuzzer 84697 427237 20195 0 3 0x4000082 thrsleep syz-fuzzer 84697 40697 20195 0 3 0x4000082 wait syz-fuzzer 84697 117919 20195 0 3 0x4000082 wait syz-fuzzer 84697 136933 20195 0 3 0x4000082 wait syz-fuzzer 84697 431934 20195 0 3 0x4000082 wait syz-fuzzer 84697 156303 20195 0 3 0x4000082 wait syz-fuzzer 20195 321089 39682 0 3 0x10008a sigsusp ksh 39682 320547 43432 0 2 0x9a sshd 38377 242486 1 0 3 0x100083 ttyin getty 43432 474928 1 0 3 0x88 kqread sshd 75172 237294 53165 73 3 0x1100090 kqread syslogd 53165 441544 1 0 3 0x100082 netio syslogd 60105 217846 1 0 3 0x100080 kqread resolvd 27078 104444 7141 77 3 0x100092 kqread dhcpleased 20341 396344 7141 77 3 0x100092 kqread dhcpleased 7141 341779 1 0 3 0x80 kqread dhcpleased 21043 153686 0 0 3 0x14200 bored smr 56453 351061 0 0 2 0x14200 zerothread 9282 427761 0 0 3 0x14200 aiodoned aiodoned 75673 516231 0 0 3 0x14200 syncer update 65542 190886 0 0 3 0x14200 cleaner cleaner 35587 373510 0 0 3 0x14200 reaper reaper 14922 185614 0 0 3 0x14200 pgdaemon pagedaemon 47047 67306 0 0 3 0x14200 bored viomb 38723 342118 0 0 3 0x40014200 acpi0 acpi0 17843 43037 0 0 3 0x40014200 idle1 15262 361492 0 0 3 0x14200 bored softnet3 60363 237416 0 0 3 0x14200 bored softnet2 78054 233077 0 0 3 0x14200 bored softnet1 19177 285478 0 0 3 0x14200 bored softnet0 64096 498342 0 0 3 0x14200 bored systqmp 58892 13904 0 0 3 0x14200 bored systq 75943 467129 0 0 3 0x40014200 bored softclock 85110 372561 0 0 3 0x40014200 idle0 1 470781 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 92536 (syz-executor.5) thread 0xffff8000212375e8 (65719) exclusive rrwlock inode r = 0 (0xfffffd806e9feb38) #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 ufs_ihashins+0x46 sys/ufs/ufs/ufs_ihash.c:140 #5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1353 #6 ffs_inode_alloc+0x1c2 sys/ufs/ffs/ffs_alloc.c:394 #7 ufs_mkdir+0xf8 sys/ufs/ufs/ufs_vnops.c:1149 #8 VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 #9 domkdirat+0x125 sys/kern/vfs_syscalls.c:3074 #10 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #10 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:632 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd80699ed2c0) #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 46659 (syz-executor.3) thread 0xffff8000212362e0 (522371) exclusive rrwlock inode r = 0 (0xfffffd805b8a42c8) #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 vn_closefile+0xca vn_close sys/kern/vfs_vnops.c:292 [inline] #5 vn_closefile+0xca sys/kern/vfs_vnops.c:609 #6 fdrop+0xcb sys/kern/kern_descrip.c:1274 #7 closef+0x120 sys/kern/kern_descrip.c:1258 #8 syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] #8 syscall+0x606 sys/arch/amd64/amd64/trap.c:632 #9 Xsyscall+0x128 Process 2738 (syz-executor.4) thread 0xffff80002121f070 (390402) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82d5a8a8) #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 (0xfffffd805b8a41b8) #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 (0xfffffd80699ed700) #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 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10219 6413K 6419K 78643K 11341 0 pcb 13 16K 20K 78643K 19 0 rtable 248 7K 7K 78643K 1621 0 ifaddr 73 24K 24K 78643K 137 0 sysctl 3 1K 5K 78643K 14 0 counters 60 35K 35K 78643K 80 0 ioctlops 0 0K 2K 78643K 355 0 iov 0 0K 32K 78643K 17669 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1279 80K 80K 78643K 6531 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 13K 78643K 315 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 7171 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 21 77K 125K 78643K 22271 0 sigio 0 0K 0K 78643K 651 0 proc 56 78K 103K 78643K 2249 0 subproc 104 6K 6K 78643K 234 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 2443 0 in_multi 99 6K 7K 78643K 512 0 ether_multi 1 0K 0K 78643K 78 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 307 1367K 1367K 78643K 307 0 exec 0 0K 1K 78643K 4263 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 494 98K 994K 78643K 226125 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 710 0 NDP 11 0K 2K 78643K 57 0 temp 124 5866K 5994K 78643K 55855 0 kqueue 12 18K 26K 78643K 1828 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 1615 0 1612 20 19 1 3 0 8 0 rtentry 112 259 0 142 4 0 4 4 0 8 0 unpcb 144 24057 0 24044 198 192 6 10 0 8 5 syncache 296 178 0 178 41 40 1 1 0 8 1 tcpqe 32 530 0 530 29 28 1 2 0 8 1 tcpcb 776 9092 0 9086 276 272 4 21 0 8 3 arp 120 45 0 27 1 0 1 1 0 8 0 ipq 40 35 0 33 13 12 1 1 0 8 0 ipqe 40 222 0 220 13 12 1 1 0 8 0 inpcb 368 18184 0 18175 329 325 4 19 0 8 2 ip6q 72 3 0 3 2 2 0 1 0 8 0 ip6af 40 9 0 9 2 2 0 1 0 8 0 nd6 136 85 0 54 3 1 2 2 0 8 0 kcovpl 48 18 0 10 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1044 0 568 34 3 31 32 0 8 0 art_table 32 1045 0 568 5 0 5 5 0 8 0 art_node 16 258 0 151 1 0 1 1 0 8 0 sysvmsgpl 40 9 0 2 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 7169 0 7159 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 35442 0 33942 95 0 95 95 0 8 0 ffsino 272 35442 0 33942 101 0 101 101 0 8 0 nchpl 144 70764 0 69122 63 0 63 63 0 8 0 uvmvnodes 80 7080 0 0 145 0 145 145 0 8 0 vnodes 216 7080 0 0 394 0 394 394 0 8 0 namei 1024 239798 0 239796 21 20 1 2 0 8 0 percpumem 16 53 0 10 1 0 1 1 0 8 0 kstatmem 264 42 0 20 2 0 2 2 0 8 0 scxspl 216 235603 0 235602 89 87 2 8 0 8 1 plimitpl 152 4484 0 4462 32 31 1 2 0 8 0 sigapl 424 22547 0 22497 8 1 7 7 0 8 0 futexpl 64 217950 0 217950 21 20 1 1 0 8 1 knotepl 120 1607 0 0 24 8 16 16 0 8 0 kqueuepl 216 5358 0 5350 98 97 1 6 0 8 0 pipepl 320 5996 0 5968 153 150 3 11 0 8 0 fdescpl 496 22529 0 22497 6 1 5 6 0 8 0 filepl 152 178965 0 178731 276 261 15 22 0 8 5 lockfpl 104 4245 0 4243 7 6 1 2 0 8 0 lockfspl 48 868 0 866 1 0 1 1 0 8 0 sessionpl 144 33 0 17 1 0 1 1 0 8 0 pgrppl 48 506 0 490 1 0 1 1 0 8 0 ucredpl 104 30564 0 30546 1 0 1 1 0 8 0 zombiepl 144 22497 0 22497 3 2 1 1 0 8 1 processpl 1072 22547 0 22497 5 1 4 5 0 8 0 procpl 696 65227 0 65157 30 22 8 9 0 8 0 sosppl 168 233 0 233 37 36 1 1 0 8 1 sockpl 488 44768 0 44741 962 950 12 34 0 8 8 mcl64k 65536 44 0 0 3 0 3 3 0 8 0 mcl16k 16384 33 0 0 4 1 3 3 0 8 0 mcl12k 12288 41 0 0 2 0 2 2 0 8 0 mcl9k 9216 42 0 0 3 1 2 2 0 8 0 mcl8k 8192 57 0 0 4 1 3 3 0 8 0 mcl4k 4096 113 0 0 11 8 3 8 0 8 0 mcl2k2 2112 15 0 0 1 0 1 1 0 8 0 mcl2k 2048 731 0 0 63 52 11 63 0 8 0 mtagpl 96 7 0 0 1 0 1 1 0 8 0 mbufpl 256 2991 0 0 103 1 102 102 0 8 0 bufpl 288 55794 0 48713 506 0 506 506 0 8 0 anonpl 24 2353740 0 2340363 298 190 108 123 0 186 0 amapchunkpl 152 1651343 0 1650490 13103 13062 41 4427 0 158 2 amappl16 200 50657 0 50278 355 334 21 40 0 8 0 amappl15 192 18 0 18 5 5 0 1 0 8 0 amappl14 184 210 0 193 2 0 2 2 0 8 0 amappl13 176 22 0 21 1 0 1 1 0 8 0 amappl12 168 23314 0 23275 4 2 2 3 0 8 0 amappl11 160 56 0 44 1 0 1 1 0 8 0 amappl10 152 42 0 30 1 0 1 1 0 8 0 amappl9 144 390 0 390 47 46 1 2 0 8 1 amappl8 136 1167 0 930 9 0 9 9 0 8 0 amappl7 128 206 0 186 1 0 1 1 0 8 0 amappl6 120 605 0 582 2 1 1 2 0 8 0 amappl5 112 642 0 636 1 0 1 1 0 8 0 amappl4 104 1451 0 1410 3 1 2 3 0 8 0 amappl3 96 139637 0 139556 25 22 3 4 0 8 0 amappl2 88 24060 0 23989 4 2 2 3 0 8 0 amappl1 80 86167 0 85652 23 11 12 22 0 8 0 amappl 88 224502 0 224259 8 0 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 22529 0 22497 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 22529 0 22497 1 0 1 1 0 8 0 vmmpekpl 168 184653 0 184587 4 0 4 4 0 8 0 vmmpepl 168 1320015 0 1317456 321 198 123 141 0 357 1 vmsppl 464 22528 0 22497 7 2 5 6 0 8 0 rwobjpl 56 334624 0 325862 153 28 125 125 0 8 0 pdppl 4096 45066 0 44994 745 665 80 96 0 8 8 pvpl 32 6929504 0 6910258 735 531 204 356 0 265 11 pmappl 248 22528 0 22497 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 2026 0 1078 28 0 28 28 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffffffff82bfdff0) 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(ffffffff82d5a6a0) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d5a6a0) at __mp_lock+0x122 sys/kern/kern_lock.c:147 intr_handler(ffff800027958cd0,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(69) at cnputc+0x4f sys/dev/cons.c:218 db_putchar(69) at db_putchar+0x3fc sys/ddb/db_output.c:155 kprintf() at kprintf+0x6bc sys/kern/subr_prf.c:724 db_printf(ffffffff82810f4f) at db_printf+0x89 sys/kern/subr_prf.c:498 panic(ffffffff82784bba) at panic+0xdb sys/kern/subr_prf.c:216 vop_generic_badop(ffff8000279590f8) at vop_generic_badop+0x1f sys/kern/vfs_default.c:133 VOP_STRATEGY(fffffd80755fd130,fffffd8073e47030) at VOP_STRATEGY+0x9f sys/kern/vfs_vops.c:628 end trace frame: 0xffff8000279591a0, count: 0 ddb{0}> trace x86_ipi_db(ffffffff82bfdff0) 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(ffffffff82d5a6a0) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d5a6a0) at __mp_lock+0x122 sys/kern/kern_lock.c:147 intr_handler(ffff800027958cd0,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(69) at cnputc+0x4f sys/dev/cons.c:218 db_putchar(69) at db_putchar+0x3fc sys/ddb/db_output.c:155 kprintf() at kprintf+0x6bc sys/kern/subr_prf.c:724 db_printf(ffffffff82810f4f) at db_printf+0x89 sys/kern/subr_prf.c:498 panic(ffffffff82784bba) at panic+0xdb sys/kern/subr_prf.c:216 vop_generic_badop(ffff8000279590f8) at vop_generic_badop+0x1f sys/kern/vfs_default.c:133 VOP_STRATEGY(fffffd80755fd130,fffffd8073e47030) at VOP_STRATEGY+0x9f sys/kern/vfs_vops.c:628 bwrite(fffffd8073e47030) at bwrite+0x1f4 sys/kern/vfs_bio.c:760 VOP_BWRITE(fffffd8073e47030) at VOP_BWRITE+0x4e sys/kern/vfs_vops.c:640 ufs_mkdir(ffff800027959390) at ufs_mkdir+0x6c4 sys/ufs/ufs/ufs_vnops.c:1235 VOP_MKDIR(fffffd8066cae1d8,ffff8000279594f0,ffff800027959520,ffff800027959420) at VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 domkdirat(ffff80002121f070,ffffff9c,79fae780ffc0,1ff) at domkdirat+0x125 sys/kern/vfs_syscalls.c:3074 syscall(ffff8000279596a0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff8000279596a0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:632 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x79fae7810030, 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(ffffffff8278e492) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8280fd84,ffffffff827d111b,2a3,ffffffff827c912f) 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(ffffffff8278e492) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8280fd84,ffffffff827d111b,2a3,ffffffff827c912f) at __assert+0x29 sys/kern/subr_prf.c:157 proc_trampoline_mp() at proc_trampoline_mp+0x135 end trace frame: 0x0, count: -4