panic: vop_generipca_nicbad:o p Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 223579 5391 32767 0x10 0 0 syz-executor.2 *338735 69471 32767 0x10 0x4000000 1 syz-executor.1 db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827958d4) at panic+0x17b sys/kern/subr_prf.c:198 vop_generic_badop(ffff80002e457948) at vop_generic_badop+0x1f sys/kern/vfs_default.c:133 VOP_STRATEGY(fffffd806fe17128,fffffd8070273d90) at VOP_STRATEGY+0x9f sys/kern/vfs_vops.c:628 bwrite(fffffd8070273d90) at bwrite+0x1f1 sys/kern/vfs_bio.c:760 VOP_BWRITE(fffffd8070273d90) at VOP_BWRITE+0x4e sys/kern/vfs_vops.c:640 ufs_mkdir(ffff80002e457be0) at ufs_mkdir+0x6c4 sys/ufs/ufs/ufs_vnops.c:1235 VOP_MKDIR(fffffd806e5fad08,ffff80002e457d40,ffff80002e457d70,ffff80002e457c70) at VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 domkdirat(ffff800021274aa0,ffffff9c,20000040,1e4) at domkdirat+0x125 sys/kern/vfs_syscalls.c:3073 syscall(ffff80002e457ef0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002e457ef0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1435017630, 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 679 *cpu1: vop_generic_badop ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827958d4) at panic+0x17b sys/kern/subr_prf.c:198 vop_generic_badop(ffff80002e457948) at vop_generic_badop+0x1f sys/kern/vfs_default.c:133 VOP_STRATEGY(fffffd806fe17128,fffffd8070273d90) at VOP_STRATEGY+0x9f sys/kern/vfs_vops.c:628 bwrite(fffffd8070273d90) at bwrite+0x1f1 sys/kern/vfs_bio.c:760 VOP_BWRITE(fffffd8070273d90) at VOP_BWRITE+0x4e sys/kern/vfs_vops.c:640 ufs_mkdir(ffff80002e457be0) at ufs_mkdir+0x6c4 sys/ufs/ufs/ufs_vnops.c:1235 VOP_MKDIR(fffffd806e5fad08,ffff80002e457d40,ffff80002e457d70,ffff80002e457c70) at VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 domkdirat(ffff800021274aa0,ffffff9c,20000040,1e4) at domkdirat+0x125 sys/kern/vfs_syscalls.c:3073 syscall(ffff80002e457ef0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002e457ef0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1435017630, count: -11 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80002e457870 rbx 0xffff800020d59ba7 rdx 0xffff800000cefb80 rcx 0xffff800021274aa0 rax 0xffff800020d58ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x9760bcc7d5111a41 r11 0x9994d7bb15b5dda8 r12 0xffff800020d599a8 r13 0 r14 0 r15 0x1 rip 0xffffffff81be47cc db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002e457860 ss 0 db_enter+0x1c: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.1) tid=338735 pid=69471 tcnt=2 stat=onproc flags process=10 proc=4000000 runpri=17, usrpri=58, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff800021274ff0,0xffff8000212a7008 process=0xffff8000ffff4018 user=0xffff80002e452000, vmspace=0xfffffd806bb53758 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 5391 223579 63540 32767 7 0x10 syz-executor.2 74953 127711 75505 32767 2 0x10 syz-executor.3 69471 130383 9061 32767 2 0x10 syz-executor.1 *69471 338735 9061 32767 7 0x4000010 syz-executor.1 58036 508687 54060 32767 2 0x10 syz-executor.4 58036 162449 54060 32767 3 0x4000090 fsleep syz-executor.4 98433 45285 6739 32767 2 0x10 syz-executor.5 98433 374284 6739 32767 3 0x4000090 fsleep syz-executor.5 98433 425281 6739 32767 3 0x4000090 kqread syz-executor.5 38429 76019 97866 32767 2 0x10 syz-executor.7 97866 137091 43295 0 3 0x82 wait syz-executor.7 63540 345322 16144 32767 3 0x90 nanoslp syz-executor.2 16144 76073 43295 0 3 0x82 wait syz-executor.2 9061 98210 84958 32767 3 0x90 nanoslp syz-executor.1 84958 308097 43295 0 3 0x82 wait syz-executor.1 42149 323223 0 0 3 0x14200 bored sosplice 75505 13528 26835 32767 3 0x90 nanoslp syz-executor.3 3156 324085 3936 32767 2 0x10 syz-executor.6 6739 409954 18845 32767 3 0x90 nanoslp syz-executor.5 3936 452246 43295 0 3 0x82 wait syz-executor.6 54060 504231 84028 32767 3 0x90 nanoslp syz-executor.4 18845 288362 43295 0 3 0x82 wait syz-executor.5 84028 237360 43295 0 3 0x82 wait syz-executor.4 26835 230346 43295 0 3 0x82 wait syz-executor.3 33314 440746 23007 32767 2 0x10 syz-executor.0 23007 22364 43295 0 3 0x82 wait syz-executor.0 43295 332649 70236 0 3 0x2000082 thrsleep syz-fuzzer 43295 187178 70236 0 3 0x6000082 nanoslp syz-fuzzer 43295 291842 70236 0 3 0x6000082 wait syz-fuzzer 43295 166735 70236 0 3 0x6000082 wait syz-fuzzer 43295 127051 70236 0 2 0x6000002 syz-fuzzer 43295 281567 70236 0 2 0x6000082 syz-fuzzer 43295 517090 70236 0 3 0x6000082 wait syz-fuzzer 43295 151250 70236 0 3 0x6000082 wait syz-fuzzer 43295 456774 70236 0 3 0x6000082 thrsleep syz-fuzzer 43295 54822 70236 0 3 0x6000082 wait syz-fuzzer 43295 404975 70236 0 3 0x6000082 thrsleep syz-fuzzer 43295 376342 70236 0 3 0x6000082 wait syz-fuzzer 43295 265350 70236 0 3 0x6000082 wait syz-fuzzer 43295 303789 70236 0 2 0x6000002 syz-fuzzer 43295 366829 70236 0 3 0x6000082 thrsleep syz-fuzzer 43295 444430 70236 0 3 0x6000082 wait syz-fuzzer 70236 496990 44052 0 3 0x10008a sigsusp ksh 44052 182613 69843 0 2 0x9a sshd 34839 453509 1 0 3 0x100083 ttyin getty 69843 245919 1 0 3 0x88 kqread sshd 84437 216638 4573 73 3 0x1100090 kqread syslogd 4573 161821 1 0 3 0x100082 netio syslogd 87790 117535 1 0 3 0x100080 kqread resolvd 5259 31610 15514 77 3 0x100092 kqread dhcpleased 32297 500680 15514 77 3 0x100092 kqread dhcpleased 15514 102799 1 0 3 0x80 kqread dhcpleased 27063 401232 0 0 3 0x14200 bored smr 92763 217937 0 0 2 0x14200 zerothread 22636 143839 0 0 3 0x14200 aiodoned aiodoned 23271 442150 0 0 3 0x14200 syncer update 66148 104710 0 0 3 0x14200 cleaner cleaner 8234 485434 0 0 3 0x14200 reaper reaper 54185 424531 0 0 3 0x14200 pgdaemon pagedaemon 5372 88517 0 0 3 0x14200 bored viomb 91361 304619 0 0 3 0x40014200 acpi0 acpi0 36642 184393 0 0 3 0x40014200 idle1 75683 206379 0 0 3 0x14200 bored softnet3 42927 348304 0 0 3 0x14200 bored softnet2 3279 362950 0 0 3 0x14200 bored softnet1 25502 28910 0 0 3 0x14200 bored softnet0 64838 5702 0 0 3 0x14200 bored systqmp 20185 435450 0 0 3 0x14200 bored systq 21051 362677 0 0 3 0x40014200 bored softclock 3951 74661 0 0 3 0x40014200 idle0 1 405431 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 69471 (syz-executor.1) thread 0xffff800021274aa0 (338735) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82d598e0) #0 witness_lock+0x447 #1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 #2 mi_switch+0x46b sys/kern/sched_bsd.c:470 #3 sleep_finish+0x19b sys/kern/kern_synch.c:414 #4 biowait+0x91 sys/kern/vfs_bio.c:1278 #5 bwrite+0x21c sys/kern/vfs_bio.c:769 #6 ffs_update+0x281 sys/ufs/ffs/ffs_inode.c:113 #7 ufs_mkdir+0x672 sys/ufs/ufs/ufs_vnops.c:1219 #8 VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 #9 domkdirat+0x125 sys/kern/vfs_syscalls.c:3073 #10 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #10 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd80681afd68) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #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:1314 #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:3073 #12 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #12 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #13 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8008a20e68) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #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:3058 #8 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #8 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #9 Xsyscall+0x128 Process 38429 (syz-executor.7) thread 0xffff8000212a62b0 (76019) exclusive rrwlock inode r = 0 (0xfffffd8008a20098) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #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:1343 #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:3073 #10 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #10 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806e5fdf80) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #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:3058 #8 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #8 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10206 6411K 6420K 78643K 11300 0 pcb 13 12K 14K 78643K 17 0 rtable 244 6K 7K 78643K 1151 0 pf 29 8K 8K 78643K 39 0 ifaddr 44 15K 15K 78643K 68 0 ifgroup 50 2K 2K 78643K 70 0 sysctl 3 1K 1K 78643K 3 0 counters 60 35K 35K 78643K 70 0 ioctlops 0 0K 2K 78643K 84 0 iov 0 0K 24K 78643K 1544 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1279 80K 80K 78643K 9847 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 161 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 1564 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 23 85K 121K 78643K 14917 0 sigio 0 0K 0K 78643K 149 0 proc 56 78K 115K 78643K 1264 0 subproc 104 6K 6K 78643K 169 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 472 0 in_multi 99 7K 7K 78643K 246 0 ether_multi 1 0K 0K 78643K 6 0 mrt 1 0K 0K 78643K 2 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 175 784K 784K 78643K 175 0 exec 0 0K 1K 78643K 2081 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 459 91K 105K 78643K 150702 0 UVM aobj 131 4K 7K 78643K 135 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 302 0 NDP 11 0K 2K 78643K 42 0 temp 74 5920K 6000K 78643K 38005 0 kqueue 13 18K 32K 78643K 1310 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 120 938 0 935 16 15 1 5 0 8 0 rtentry 112 196 0 81 4 0 4 4 0 8 0 unpcb 144 13916 0 13901 163 162 1 15 0 8 0 syncache 304 219 0 219 41 41 0 1 0 8 0 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 448 0 448 33 33 0 1 0 8 0 tcpcb 808 6223 0 6186 220 215 5 17 0 8 0 arp 120 32 0 13 1 0 1 1 0 8 0 ipq 40 134 0 133 18 17 1 1 0 8 0 ipqe 40 595 0 594 18 17 1 1 0 8 0 inpcb 368 10735 0 10693 275 268 7 16 0 8 2 nd6 136 65 0 37 7 5 2 2 0 8 0 kcovpl 48 13 0 5 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 818 0 349 34 4 30 31 0 8 0 art_table 32 819 0 349 4 0 4 4 0 8 0 art_node 16 195 0 90 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 0 1 0 1 1 0 8 0 semupl 112 6 0 6 1 1 0 1 0 8 0 semapl 112 1555 0 1545 1 0 1 1 0 8 0 shmpl 112 132 0 4 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 27275 0 25817 92 0 92 92 0 8 0 ffsino 272 27276 0 25817 98 0 98 98 0 8 0 nchpl 144 47125 0 45485 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 165955 0 165953 3 2 1 2 0 8 0 percpumem 16 48 0 5 1 0 1 1 0 8 0 kstatmem 264 32 0 10 2 0 2 2 0 8 0 scxspl 216 141931 0 141931 35 34 1 8 1 8 1 plimitpl 152 2062 0 2039 27 26 1 2 0 8 0 sigapl 424 15201 0 15148 7 0 7 7 0 8 0 futexpl 64 124338 0 124336 6 5 1 1 0 8 0 knotepl 120 1273 0 0 22 10 12 18 0 8 0 kqueuepl 216 3218 0 3209 66 65 1 8 0 8 0 pipepl 320 3377 0 3347 108 105 3 8 0 8 0 fdescpl 496 15183 0 15149 7 1 6 6 0 8 0 filepl 152 121583 0 121337 309 299 10 25 0 8 0 lockfpl 104 3510 0 3508 3 2 1 2 0 8 0 lockfspl 48 1194 0 1192 1 0 1 1 0 8 0 sessionpl 144 28 0 12 1 0 1 1 0 8 0 pgrppl 48 247 0 231 1 0 1 1 0 8 0 ucredpl 104 41301 0 41283 1 0 1 1 0 8 0 zombiepl 144 15149 0 15148 1 0 1 1 0 8 0 processpl 1072 15201 0 15148 5 1 4 5 0 8 0 procpl 680 42992 0 42920 62 55 7 9 0 8 0 sosppl 168 199 0 199 28 28 0 1 0 8 0 sockpl 488 26439 0 26381 745 732 13 53 0 8 3 mcl64k 65536 30 0 0 4 1 3 3 0 8 0 mcl16k 16384 19 0 0 3 0 3 3 0 8 0 mcl12k 12288 26 0 0 2 0 2 2 0 8 0 mcl9k 9216 18 0 0 2 0 2 2 0 8 0 mcl8k 8192 42 0 0 4 1 3 3 0 8 0 mcl4k 4096 65 0 0 5 2 3 3 0 8 0 mcl2k2 2112 11 0 0 1 0 1 1 0 8 0 mcl2k 2048 509 0 0 36 19 17 36 0 8 0 mtagpl 96 27 0 0 1 0 1 1 0 8 0 mbufpl 256 2158 0 0 110 0 110 110 0 8 0 bufpl 288 29996 0 23667 453 0 453 453 0 8 0 anonpl 24 1500894 0 1489796 317 227 90 102 0 186 1 amapchunkpl 152 477912 0 477079 172 135 37 50 0 158 0 amappl16 200 31395 0 31129 216 200 16 28 0 8 0 amappl15 192 25 0 25 4 4 0 1 0 8 0 amappl14 184 173 0 159 2 1 1 2 0 8 0 amappl13 176 15 0 15 2 2 0 1 0 8 0 amappl12 168 15882 0 15845 2 0 2 2 0 8 0 amappl11 160 53 0 42 1 0 1 1 0 8 0 amappl10 152 48 0 33 1 0 1 1 0 8 0 amappl9 144 459 0 457 1 0 1 1 0 8 0 amappl8 136 834 0 620 8 0 8 8 0 8 0 amappl7 128 155 0 139 2 0 2 2 0 8 0 amappl6 120 437 0 417 2 1 1 2 0 8 0 amappl5 112 514 0 505 1 0 1 1 0 8 0 amappl4 104 953 0 905 3 1 2 3 0 8 0 amappl3 96 93062 0 92975 18 15 3 4 0 8 0 amappl2 88 16157 0 16082 3 1 2 3 0 8 0 amappl1 80 60778 0 60256 22 10 12 22 0 8 0 amappl 88 149495 0 149253 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 72 134 0 4 3 0 3 3 0 8 0 uaddrrnd 24 15183 0 15149 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 15183 0 15149 1 0 1 1 0 8 0 vmmpekpl 168 116482 0 116413 4 0 4 4 0 8 0 vmmpepl 168 874477 0 872037 312 196 116 127 0 357 0 vmsppl 464 15182 0 15149 7 1 6 6 0 8 0 rwobjpl 56 224026 0 216547 125 15 110 110 0 8 0 pdppl 4096 30373 0 30298 748 669 79 93 0 8 4 pvpl 32 4464795 0 4447664 698 533 165 359 0 265 0 pmappl 248 15182 0 15149 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 2154 0 1238 27 0 27 27 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffffffff82c10ff0) 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+0x27 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(800,6b) at comcnputc+0x97 sys/dev/ic/com.c:1260 cnputc(6b) at cnputc+0x4f sys/dev/cons.c:218 db_putchar(6b) at db_putchar+0x3fc sys/ddb/db_output.c:155 kprintf() at kprintf+0x20fc sys/kern/subr_prf.c:1064 db_printf(ffffffff82826373) at db_printf+0x89 sys/kern/subr_prf.c:498 panic(ffffffff827a3fdb) at panic+0xdb sys/kern/subr_prf.c:216 __assert(ffffffff82820e41,ffffffff827e695b,2a7,ffffffff827d94e0) 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(ffffffff82c10ff0) 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+0x27 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(800,6b) at comcnputc+0x97 sys/dev/ic/com.c:1260 cnputc(6b) at cnputc+0x4f sys/dev/cons.c:218 db_putchar(6b) at db_putchar+0x3fc sys/ddb/db_output.c:155 kprintf() at kprintf+0x20fc sys/kern/subr_prf.c:1064 db_printf(ffffffff82826373) at db_printf+0x89 sys/kern/subr_prf.c:498 panic(ffffffff827a3fdb) at panic+0xdb sys/kern/subr_prf.c:216 __assert(ffffffff82820e41,ffffffff827e695b,2a7,ffffffff827d94e0) 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(ffffffff827958d4) at panic+0x17b sys/kern/subr_prf.c:198 vop_generic_badop(ffff80002e457948) at vop_generic_badop+0x1f sys/kern/vfs_default.c:133 VOP_STRATEGY(fffffd806fe17128,fffffd8070273d90) at VOP_STRATEGY+0x9f sys/kern/vfs_vops.c:628 bwrite(fffffd8070273d90) at bwrite+0x1f1 sys/kern/vfs_bio.c:760 VOP_BWRITE(fffffd8070273d90) at VOP_BWRITE+0x4e sys/kern/vfs_vops.c:640 ufs_mkdir(ffff80002e457be0) at ufs_mkdir+0x6c4 sys/ufs/ufs/ufs_vnops.c:1235 VOP_MKDIR(fffffd806e5fad08,ffff80002e457d40,ffff80002e457d70,ffff80002e457c70) at VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 domkdirat(ffff800021274aa0,ffffff9c,20000040,1e4) at domkdirat+0x125 sys/kern/vfs_syscalls.c:3073 syscall(ffff80002e457ef0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002e457ef0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1435017630, count: 4 ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827958d4) at panic+0x17b sys/kern/subr_prf.c:198 vop_generic_badop(ffff80002e457948) at vop_generic_badop+0x1f sys/kern/vfs_default.c:133 VOP_STRATEGY(fffffd806fe17128,fffffd8070273d90) at VOP_STRATEGY+0x9f sys/kern/vfs_vops.c:628 bwrite(fffffd8070273d90) at bwrite+0x1f1 sys/kern/vfs_bio.c:760 VOP_BWRITE(fffffd8070273d90) at VOP_BWRITE+0x4e sys/kern/vfs_vops.c:640 ufs_mkdir(ffff80002e457be0) at ufs_mkdir+0x6c4 sys/ufs/ufs/ufs_vnops.c:1235 VOP_MKDIR(fffffd806e5fad08,ffff80002e457d40,ffff80002e457d70,ffff80002e457c70) at VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 domkdirat(ffff800021274aa0,ffffff9c,20000040,1e4) at domkdirat+0x125 sys/kern/vfs_syscalls.c:3073 syscall(ffff80002e457ef0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002e457ef0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1435017630, count: -11