panic: vop_pgaenniecr: ikernel 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 * 54694 27971 32767 0x10 0x4000000 1 syz-executor.4 4660 7007 32767 0x10 0 0 syz-executor.0 db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8279131a) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8280dde0,ffffffff827d205b,2a3,ffffffff827c701c) 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(ffffffff8279131a) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8280dde0,ffffffff827d205b,2a3,ffffffff827c701c) 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 0xffff8000212d5510 rbx 0xffff800020d59b8f rdx 0 rcx 0 rax 0xffff8000211eb348 r8 0x101010101010101 r9 0x8080808080808080 r10 0xc99c081548a17dad r11 0x757786b1495f0c6a r12 0xffff800020d59990 r13 0 r14 0xffffffff82b7c990 cpu_info_full_primary+0x2990 r15 0x1 rip 0xffffffff8117250c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff8000212d5500 ss 0x10 db_enter+0x1c: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.4) pid=54694 stat=onproc flags process=10 proc=4000000 pri=80, usrpri=80, nice=20 forw=0xffffffffffffffff, list=0xffff8000211ebb70,0xffffffff82dc8470 process=0xffff800021221930 user=0xffff8000212d0000, vmspace=0xfffffd806d6fc3a0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 27971 36247 49420 32767 2 0x10 syz-executor.4 27971 435308 49420 32767 2 0x4000010 syz-executor.4 *27971 54694 49420 32767 7 0x4000010 syz-executor.4 46992 94240 79129 32767 3 0x90 nanoslp syz-executor.2 46992 249591 79129 32767 3 0x4000090 netio syz-executor.2 46992 357511 79129 32767 3 0x4000090 fsleep syz-executor.2 46992 258313 79129 32767 3 0x4000090 fsleep syz-executor.2 65853 316930 99567 32767 3 0x90 piperd syz-executor.1 99567 517202 69966 0 3 0x82 wait syz-executor.1 7007 4660 97911 32767 7 0x10 syz-executor.0 97911 23264 69966 0 3 0x82 wait syz-executor.0 56529 362428 39598 32767 3 0x90 piperd syz-executor.7 39598 69387 69966 0 3 0x82 wait syz-executor.7 79129 162738 30875 32767 3 0x90 nanoslp syz-executor.2 30875 521394 69966 0 3 0x82 wait syz-executor.2 48970 494172 8074 32767 3 0x90 nanoslp syz-executor.6 8074 124897 69966 0 3 0x82 wait syz-executor.6 73076 236166 67331 32767 3 0x90 nanoslp syz-executor.5 67331 247515 69966 0 3 0x82 wait syz-executor.5 5108 520778 0 0 3 0x14200 bored sosplice 62810 399676 76692 32767 2 0x10 syz-executor.3 76692 490326 69966 0 3 0x82 wait syz-executor.3 58471 216055 34101 0 3 0x100082 netio ndp 34101 67333 29509 0 3 0x10008a sigsusp sh 49420 474408 2682 32767 3 0x90 nanoslp syz-executor.4 2682 109341 69966 0 3 0x82 wait syz-executor.4 29509 264055 1 0 3 0x80 wait syz-executor.3 69966 109078 16782 0 3 0x82 wait syz-fuzzer 69966 333351 16782 0 3 0x4000082 nanoslp syz-fuzzer 69966 401721 16782 0 3 0x4000082 kqread syz-fuzzer 69966 144636 16782 0 3 0x4000082 wait syz-fuzzer 69966 412296 16782 0 3 0x4000082 wait syz-fuzzer 69966 12573 16782 0 3 0x4000082 wait syz-fuzzer 69966 165692 16782 0 3 0x4000082 wait syz-fuzzer 69966 315424 16782 0 3 0x4000082 thrsleep syz-fuzzer 69966 226570 16782 0 3 0x4000082 thrsleep syz-fuzzer 69966 243995 16782 0 3 0x4000082 wait syz-fuzzer 69966 177202 16782 0 3 0x4000082 thrsleep syz-fuzzer 69966 278165 16782 0 3 0x4000082 wait syz-fuzzer 69966 319614 16782 0 3 0x4000082 thrsleep syz-fuzzer 69966 302180 16782 0 3 0x4000082 thrsleep syz-fuzzer 69966 160670 16782 0 3 0x4000082 thrsleep syz-fuzzer 69966 279574 16782 0 3 0x4000082 wait syz-fuzzer 16782 332265 43749 0 3 0x10008a sigsusp ksh 43749 417469 17108 0 3 0x9a kqread sshd 38635 397908 1 0 3 0x100083 ttyin getty 17108 469384 1 0 3 0x88 kqread sshd 36072 379111 12954 73 3 0x1100090 kqread syslogd 12954 67536 1 0 3 0x100082 netio syslogd 47090 156932 1 0 3 0x100080 kqread resolvd 21578 335923 22120 77 3 0x100092 kqread dhcpleased 12762 62109 22120 77 3 0x100092 kqread dhcpleased 22120 452149 1 0 3 0x80 kqread dhcpleased 86569 376989 0 0 3 0x14200 bored smr 26278 431056 0 0 2 0x14200 zerothread 6483 345656 0 0 3 0x14200 aiodoned aiodoned 8525 111577 0 0 3 0x14200 syncer update 69072 91249 0 0 3 0x14200 cleaner cleaner 9559 38996 0 0 3 0x14200 reaper reaper 91738 356131 0 0 3 0x14200 pgdaemon pagedaemon 93291 294789 0 0 3 0x14200 bored viomb 19296 316938 0 0 3 0x40014200 acpi0 acpi0 22842 48673 0 0 3 0x40014200 idle1 63534 318205 0 0 3 0x14200 bored softnet 85863 394058 0 0 3 0x14200 bored softnet 18946 169972 0 0 3 0x14200 bored softnet 22361 206948 0 0 3 0x14200 bored softnet 19926 237064 0 0 3 0x14200 bored systqmp 74142 482715 0 0 3 0x14200 bored systq 58930 505205 0 0 3 0x40014200 bored softclock 76759 508563 0 0 3 0x40014200 idle0 1 289222 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 7007 (syz-executor.0) thread 0xffff800021233320 (4660) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82d3e380) #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 (0xfffffd8066655b40) #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 (0xfffffd806a4aaf80) #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 56529 (syz-executor.7) thread 0xffff80002125a2e0 (362428) exclusive rrwlock inode r = 0 (0xfffffd805aab3f88) #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 (0xfffffd805aab3928) #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 62810 (syz-executor.3) thread 0xffff800021230b00 (399676) exclusive rrwlock inode r = 0 (0xfffffd805aab35f8) #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 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10212 6412K 6419K 78643K 11373 0 pcb 13 12K 14K 78643K 17 0 rtable 244 6K 7K 78643K 2018 0 ifaddr 73 24K 25K 78643K 217 0 sysctl 3 1K 1K 78643K 3 0 counters 60 35K 35K 78643K 106 0 ioctlops 0 0K 2K 78643K 470 0 iov 0 0K 44K 78643K 4327 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1292 81K 81K 78643K 3943 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 215 0 VM map 2 1K 1K 78643K 2 0 sem 12 1K 1K 78643K 3359 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 23 85K 125K 78643K 15336 0 sigio 0 0K 0K 78643K 232 0 proc 56 78K 103K 78643K 2103 0 subproc 117 7K 7K 78643K 403 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 1317 0 in_multi 99 6K 7K 78643K 511 0 ether_multi 1 0K 0K 78643K 40 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 265 1182K 1182K 78643K 265 0 exec 0 0K 1K 78643K 3049 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 492 105K 4126K 78643K 159943 0 UVM aobj 131 8K 8K 78643K 131 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 414 0 NDP 11 0K 2K 78643K 96 0 temp 128 5858K 5988K 78643K 41766 0 kqueue 12 18K 28K 78643K 1282 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 1579 0 1575 19 18 1 3 0 8 0 rtentry 112 399 0 284 4 0 4 4 0 8 0 unpcb 144 28008 0 27995 211 206 5 11 0 8 4 syncache 296 180 0 180 36 35 1 1 0 8 1 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 217 0 217 25 24 1 1 0 8 1 tcpcb 776 6325 0 6314 191 183 8 15 0 8 6 arp 120 74 0 55 1 0 1 1 0 8 0 ipq 40 22 0 21 13 12 1 1 0 8 0 ipqe 40 228 0 227 13 12 1 1 0 8 0 inpcb 368 18912 0 18895 330 322 8 20 0 8 6 ip6q 72 2 0 2 1 1 0 1 0 8 0 ip6af 40 6 0 6 1 1 0 1 0 8 0 nd6 136 118 0 90 2 0 2 2 0 8 0 kcovpl 48 31 0 22 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1563 0 1096 35 5 30 30 0 8 0 art_table 32 1564 0 1096 4 0 4 4 0 8 0 art_node 16 398 0 293 1 0 1 1 0 8 0 sysvmsgpl 40 31 0 18 1 0 1 1 0 8 0 semupl 112 2 0 2 2 2 0 1 0 8 0 semapl 112 3357 0 3347 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 21503 0 20016 94 0 94 94 0 8 0 ffsino 272 21503 0 20016 100 0 100 100 0 8 0 nchpl 144 43099 0 41456 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 147346 0 147345 11 10 1 3 0 8 0 percpumem 16 66 0 23 1 0 1 1 0 8 0 kstatmem 264 68 0 46 2 0 2 2 0 8 0 scxspl 216 131343 0 131343 70 69 1 8 0 8 1 plimitpl 152 2818 0 2794 38 36 2 2 0 8 1 sigapl 424 15574 0 15520 8 1 7 7 0 8 0 futexpl 64 134008 0 134006 12 11 1 1 0 8 0 knotepl 120 1187 0 0 12 1 11 11 0 8 0 kqueuepl 216 3937 0 3929 65 64 1 8 0 8 0 pipepl 320 3237 0 3206 101 98 3 13 0 8 0 fdescpl 496 15556 0 15522 19 13 6 6 0 8 0 filepl 152 119282 0 119027 288 273 15 24 0 8 4 lockfpl 104 2599 0 2596 1 0 1 1 0 8 0 lockfspl 48 993 0 990 1 0 1 1 0 8 0 sessionpl 144 46 0 29 1 0 1 1 0 8 0 pgrppl 48 232 0 215 1 0 1 1 0 8 0 ucredpl 104 16545 0 16527 1 0 1 1 0 8 0 zombiepl 144 15522 0 15520 2 1 1 1 0 8 0 processpl 1072 15574 0 15520 5 1 4 5 0 8 0 procpl 696 46740 0 46666 44 35 9 10 0 8 1 srpgc 96 2 0 2 1 1 0 1 0 8 0 sosppl 168 247 0 247 27 26 1 1 0 8 1 sockpl 488 49070 0 49037 1149 1135 14 42 0 8 7 mcl64k 65536 25 0 0 3 0 3 3 0 8 0 mcl16k 16384 41 0 0 4 1 3 3 0 8 0 mcl12k 12288 49 0 0 2 0 2 2 0 8 0 mcl9k 9216 37 0 0 3 1 2 2 0 8 0 mcl8k 8192 41 0 0 5 2 3 3 0 8 0 mcl4k 4096 57 0 0 4 1 3 3 0 8 0 mcl2k2 2112 9 0 0 1 0 1 1 0 8 0 mcl2k 2048 747 0 0 68 58 10 68 0 8 0 mtagpl 96 18 0 0 1 0 1 1 0 8 0 mbufpl 256 5532 0 0 310 0 310 310 0 8 0 bufpl 288 31227 0 24909 452 0 452 452 0 8 0 anonpl 24 1606137 0 1592868 259 157 102 113 0 186 0 amapchunkpl 152 1047617 0 1046754 6695 6628 67 2236 0 158 28 amappl16 200 32408 0 32012 204 181 23 35 0 8 0 amappl15 192 9 0 9 2 2 0 1 0 8 0 amappl14 184 233 0 218 2 1 1 2 0 8 0 amappl13 176 20 0 20 6 6 0 1 0 8 0 amappl12 168 16527 0 16482 4 1 3 3 0 8 0 amappl11 160 57 0 47 1 0 1 1 0 8 0 amappl10 152 68 0 51 1 0 1 1 0 8 0 amappl9 144 329 0 328 2 1 1 2 0 8 0 amappl8 136 909 0 692 8 0 8 8 0 8 0 amappl7 128 136 0 117 1 0 1 1 0 8 0 amappl6 120 625 0 596 2 1 1 2 0 8 0 amappl5 112 520 0 513 1 0 1 1 0 8 0 amappl4 104 1266 0 1217 3 0 3 3 0 8 0 amappl3 96 98285 0 98196 29 25 4 5 0 8 1 amappl2 88 16519 0 16449 4 2 2 3 0 8 0 amappl1 80 63332 0 62776 22 9 13 22 0 8 0 amappl 88 158260 0 158004 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 15556 0 15522 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 15556 0 15522 1 0 1 1 0 8 0 vmmpekpl 168 131372 0 131286 4 0 4 4 0 8 0 vmmpepl 168 933418 0 930796 385 253 132 150 0 357 1 vmsppl 456 15555 0 15522 6 1 5 6 0 8 0 rwobjpl 56 239974 0 232289 128 16 112 112 0 8 0 pdppl 4096 31120 0 31044 720 632 88 96 0 8 12 pvpl 32 4602684 0 4583289 710 527 183 362 0 265 0 pmappl 248 15555 0 15522 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 2143 0 1033 33 0 33 33 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffffffff82b7bff0) 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(ffffffff82d3e178) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d3e178) at __mp_lock+0x122 sys/kern/kern_lock.c:147 softintr_dispatch(0) at softintr_dispatch+0x52 sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x23 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+0x20fc sys/kern/subr_prf.c:1064 db_printf(ffffffff82813222) at db_printf+0x89 sys/kern/subr_prf.c:498 panic(ffffffff82783516) at panic+0xdb sys/kern/subr_prf.c:216 vop_generic_badop(ffff8000245415d8) at vop_generic_badop+0x1f sys/kern/vfs_default.c:133 VOP_STRATEGY(fffffd8073a113b8,fffffd806610f000) at VOP_STRATEGY+0x9f sys/kern/vfs_vops.c:628 bwrite(fffffd806610f000) at bwrite+0x1f4 sys/kern/vfs_bio.c:760 end trace frame: 0xffff8000245416c0, count: 0 ddb{0}> trace x86_ipi_db(ffffffff82b7bff0) 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(ffffffff82d3e178) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d3e178) at __mp_lock+0x122 sys/kern/kern_lock.c:147 softintr_dispatch(0) at softintr_dispatch+0x52 sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x23 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+0x20fc sys/kern/subr_prf.c:1064 db_printf(ffffffff82813222) at db_printf+0x89 sys/kern/subr_prf.c:498 panic(ffffffff82783516) at panic+0xdb sys/kern/subr_prf.c:216 vop_generic_badop(ffff8000245415d8) at vop_generic_badop+0x1f sys/kern/vfs_default.c:133 VOP_STRATEGY(fffffd8073a113b8,fffffd806610f000) at VOP_STRATEGY+0x9f sys/kern/vfs_vops.c:628 bwrite(fffffd806610f000) at bwrite+0x1f4 sys/kern/vfs_bio.c:760 VOP_BWRITE(fffffd806610f000) at VOP_BWRITE+0x4e sys/kern/vfs_vops.c:640 ufs_mkdir(ffff800024541870) at ufs_mkdir+0x6c4 sys/ufs/ufs/ufs_vnops.c:1235 VOP_MKDIR(fffffd8072d52e70,ffff8000245419d0,ffff800024541a00,ffff800024541900) at VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 domkdirat(ffff800021233320,ffffff9c,790b57204350,1ff) at domkdirat+0x125 sys/kern/vfs_syscalls.c:3074 syscall(ffff800024541b80) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff800024541b80) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:632 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x790b572043c0, count: -20 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(ffffffff8279131a) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8280dde0,ffffffff827d205b,2a3,ffffffff827c701c) 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(ffffffff8279131a) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8280dde0,ffffffff827d205b,2a3,ffffffff827c701c) at __assert+0x29 sys/kern/subr_prf.c:157 proc_trampoline_mp() at proc_trampoline_mp+0x135 end trace frame: 0x0, count: -4