panic: ffs_valloc: dup alloc Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 165379 60378 0 0 0 0 syz-executor *171450 60378 0 0 0x4000000 1K syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83436526) at panic+0x1e5 sys/kern/subr_prf.c:198 ffs_inode_alloc(fffffd8068b9f150,2000,fffffd80097fd2d8,ffff80003c3eb850) at ffs_inode_alloc+0x94e ufs_makeinode(2000,fffffd8068bab368,ffff80003c3eba68,ffff80003c3eba98) at ufs_makeinode+0xcd sys/ufs/ufs/ufs_vnops.c:1732 ufs_mknod(ffff80003c3eb910) at ufs_mknod+0x5b sys/ufs/ufs/ufs_vnops.c:167 VOP_MKNOD(fffffd8068bab368,ffff80003c3eba68,ffff80003c3eba98,ffff80003c3eb998) at VOP_MKNOD+0x101 sys/kern/vfs_vops.c:121 domknodat(ffff80003bfd8fb0,ffffff9c,200000000000,2000,6381) at domknodat+0x469 sys/kern/vfs_syscalls.c:1659 syscall(ffff80003c3ebc30) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c3ebc30) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6e1af96ae70, count: 6 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 *cpu1: ffs_valloc: dup alloc ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83436526) at panic+0x1e5 sys/kern/subr_prf.c:198 ffs_inode_alloc(fffffd8068b9f150,2000,fffffd80097fd2d8,ffff80003c3eb850) at ffs_inode_alloc+0x94e ufs_makeinode(2000,fffffd8068bab368,ffff80003c3eba68,ffff80003c3eba98) at ufs_makeinode+0xcd sys/ufs/ufs/ufs_vnops.c:1732 ufs_mknod(ffff80003c3eb910) at ufs_mknod+0x5b sys/ufs/ufs/ufs_vnops.c:167 VOP_MKNOD(fffffd8068bab368,ffff80003c3eba68,ffff80003c3eba98,ffff80003c3eb998) at VOP_MKNOD+0x101 sys/kern/vfs_vops.c:121 domknodat(ffff80003bfd8fb0,ffffff9c,200000000000,2000,6381) at domknodat+0x469 sys/kern/vfs_syscalls.c:1659 syscall(ffff80003c3ebc30) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c3ebc30) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6e1af96ae70, count: -9 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80003c3eb5e0 rbx 0xffff8000299bee07 rdx 0xffff8000015c7dc0 rcx 0xffff80003bfd8fb0 rax 0xffff8000299bdff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xdba95d461f21ef57 r11 0xfc6338eaaf7ef703 r12 0xffff8000299bec08 r13 0 r14 0 r15 0x1 rip 0xffffffff822594d5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c3eb5d0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=171450 pid=60378 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=17, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003bfd9778,0xffff80003bfd87f8 process=0xffff80003bfce1d0 user=0xffff80003c3e6000, vmspace=0xfffffd806c8e1200 estcpu=36, cpticks=2, pctcpu=0.0, user=1, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 60378 165379 4089 0 7 0 syz-executor *60378 171450 4089 0 7 0x4000000 syz-executor 86414 417506 68631 0 2 0 syz-executor 86414 475854 68631 0 2 0x4000000 syz-executor 6724 203771 76763 60928 3 0x90 nanoslp syz-executor 6724 350975 76763 60928 3 0x4000090 sbwait syz-executor 6724 401685 76763 60928 3 0x4000090 fsleep syz-executor 76481 256472 27313 0 2 0 syz-executor 76481 477927 27313 0 3 0x4000080 fsleep syz-executor 26129 231793 95494 -1 2 0x10 syz-executor 26129 397630 95494 -1 3 0x4000090 fsleep syz-executor 83722 294935 25861 0 2 0 syz-executor 83722 15082 25861 0 3 0x4000080 fsleep syz-executor 68631 262549 33951 0 3 0x82 nanoslp syz-executor 27313 477659 33951 0 3 0x82 nanoslp syz-executor 76763 223596 33951 0 3 0x82 nanoslp syz-executor 20168 413692 33951 0 3 0x2 biowait syz-executor 25861 207289 33951 0 3 0x82 nanoslp syz-executor 4089 338902 33951 0 3 0x82 nanoslp syz-executor 95494 34758 33951 0 3 0x82 nanoslp syz-executor 33951 231136 15004 0 3 0x82 wait syz-executor 15004 58375 84928 0 3 0x10008a sigsusp ksh 84928 36436 62484 0 3 0x98 kqread sshd-session 62484 304548 67857 0 3 0x92 kqread sshd-session 26715 12893 1 0 3 0x100083 ttyin getty 67857 276657 1 0 3 0x88 kqread sshd 49052 240876 81167 74 3 0x1100092 bpf pflogd 81167 121802 1 0 3 0x80 sbwait pflogd 46022 252520 82372 73 3 0x1100090 kqread syslogd 82372 95243 1 0 3 0x100082 sbwait syslogd 40528 191977 1 0 3 0x100080 kqread resolvd 25298 59919 53883 77 3 0x100092 kqread dhcpleased 99768 333371 53883 77 3 0x100092 kqread dhcpleased 53883 329058 1 0 3 0x80 kqread dhcpleased 41309 2999 0 0 3 0x14200 bored smr 84078 237343 0 0 2 0x14200 zerothread 62283 244631 0 0 3 0x14200 aiodoned aiodoned 17775 357214 0 0 3 0x14200 syncer update 78288 18127 0 0 3 0x14200 cleaner cleaner 95922 27533 0 0 3 0x14200 reaper reaper 3457 518021 0 0 3 0x14200 pgdaemon pagedaemon 85373 520639 0 0 3 0x14200 bored viomb 52259 336606 0 0 3 0x40014200 acpi0 acpi0 75442 421889 0 0 3 0x40014200 idle1 36775 248325 0 0 3 0x14200 bored softnet1 92186 224827 0 0 3 0x14200 bored softnet0 78868 410262 0 0 3 0x14200 bored systqmp 22369 391795 0 0 3 0x14200 bored systq 44319 374521 0 0 3 0x14200 tmoslp softclockmp 63263 355387 0 0 3 0x40014200 tmoslp softclock 19199 141419 0 0 3 0x40014200 idle0 1 416868 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 60378 (syz-executor) thread 0xffff80003bfd8fb0 (171450) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83aaad40) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 #2 sleep_finish+0x2d8 sys/kern/kern_synch.c:369 #3 getblk+0x197 sys/kern/vfs_bio.c:1013 #4 bread+0x45 bio_doread sys/kern/vfs_bio.c:418 [inline] #4 bread+0x45 sys/kern/vfs_bio.c:463 #5 ffs_vget+0x283 sys/ufs/ffs/ffs_vfsops.c:1249 #6 ffs_inode_alloc+0x279 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_makeinode+0xcd sys/ufs/ufs/ufs_vnops.c:1732 #8 ufs_mknod+0x5b sys/ufs/ufs/ufs_vnops.c:167 #9 VOP_MKNOD+0x101 sys/kern/vfs_vops.c:121 #10 domknodat+0x469 sys/kern/vfs_syscalls.c:1659 #11 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #11 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #12 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8068b9f0c8) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 ufs_ihashins+0x4f ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline] #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:159 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1232 #6 ffs_inode_alloc+0x279 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_makeinode+0xcd sys/ufs/ufs/ufs_vnops.c:1732 #8 ufs_mknod+0x5b sys/ufs/ufs/ufs_vnops.c:167 #9 VOP_MKNOD+0x101 sys/kern/vfs_vops.c:121 #10 domknodat+0x469 sys/kern/vfs_syscalls.c:1659 #11 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #11 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #12 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8068b9f1f0) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 #6 namei+0x7ca sys/kern/vfs_lookup.c:250 #7 domknodat+0xb4 sys/kern/vfs_syscalls.c:1611 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #9 Xsyscall+0x128 Process 20168 (syz-executor) thread 0xffff8000ffffd4c8 (413692) exclusive rrwlock inode r = 0 (0xfffffd8068b9f7b8) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 ufs_ihashins+0x4f ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline] #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:159 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1232 #6 ffs_inode_alloc+0x279 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3143 #10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806cf6fb20) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 #6 namei+0x7ca sys/kern/vfs_lookup.c:250 #7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3128 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11064 12214K 12214K 166960K 12157 0 pcb 17 12K 12K 166960K 18 0 rtable 237 6K 7K 166960K 352 0 pf 35 17K 18K 166960K 46 0 ifaddr 43 7K 7K 166960K 45 0 ifgroup 55 2K 2K 166960K 55 0 sysctl 1 1K 9K 166960K 5 0 counters 70 37K 37K 166960K 70 0 ioctlops 0 0K 4K 166960K 1486 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1290 81K 81K 166960K 1365 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 3 0 VM map 2 1K 1K 166960K 2 0 sem 3 0K 0K 166960K 3 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 93K 166960K 146 0 proc 73 131K 164K 166960K 555 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 in_multi 99 7K 7K 166960K 99 0 ether_multi 1 0K 0K 166960K 1 0 mrt 1 0K 0K 166960K 3 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 25 122K 122K 166960K 25 0 exec 0 0K 1K 166960K 380 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 219 159K 168K 166960K 3184 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 41 82K 105K 166960K 1283 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 28 2K 2K 166960K 28 0 temp 33 9070K 9136K 166960K 4096 0 kqueue 13 20K 20K 166960K 22 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 26 0 0 1 0 1 1 0 8 0 rtpcb 120 34 0 30 1 0 1 1 0 8 0 rtentry 176 111 0 1 5 0 5 5 0 8 0 unpcb 144 39 0 19 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 11 0 4 1 0 1 1 0 8 0 arp 136 18 0 0 1 0 1 1 0 8 0 inpcb 328 70 0 59 2 0 2 2 0 8 1 nd6 152 24 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 22 0 0 1 0 1 1 0 8 0 pfstkey 128 22 0 0 1 0 1 1 0 8 0 pfstate 448 21 0 0 3 0 3 3 0 8 0 pfrule 1360 22 0 17 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 453 0 0 29 0 29 29 0 8 0 art_table 40 454 0 0 5 0 5 5 0 8 0 art_node 32 111 0 11 1 0 1 1 0 8 0 semapl 112 1 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1579 0 111 92 0 92 92 0 8 0 ffsino 296 1580 0 112 114 0 114 114 0 8 0 nchpl 144 1789 0 83 64 0 64 64 0 8 0 vnodes 216 1672 0 0 93 0 93 93 0 8 0 namei 1024 5405 0 5403 2 0 2 2 0 8 1 percpumem 16 50 0 0 1 0 1 1 0 8 0 kstatmem 264 26 0 0 2 0 2 2 0 8 0 scxspl 216 6351 0 6350 9 1 8 8 1 8 7 plimitpl 152 28 0 10 1 0 1 1 0 8 0 sigapl 424 458 0 412 7 0 7 7 0 8 1 knotepl 120 54 0 0 2 0 2 2 0 8 0 kqueuepl 224 19 0 10 1 0 1 1 0 8 0 pipepl 344 123 0 96 3 0 3 3 0 8 0 fdescpl 528 442 0 412 3 0 3 3 0 8 0 filepl 160 1553 0 1337 10 0 10 10 0 8 0 lockfpl 104 7 0 4 1 0 1 1 0 8 0 lockfspl 48 5 0 2 1 0 1 1 0 8 0 sessionpl 144 22 0 13 1 0 1 1 0 8 0 pgrppl 48 30 0 13 1 0 1 1 0 8 0 ucredpl 104 72 0 57 1 0 1 1 0 8 0 zombiepl 144 413 0 412 1 0 1 1 0 8 0 processpl 1232 458 0 412 5 0 5 5 0 8 0 procpl 664 478 0 425 5 0 5 5 0 8 0 sockpl 752 145 0 110 4 0 4 4 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 114 0 0 15 0 15 15 0 8 0 mcl2k 2048 13 0 0 2 0 2 2 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 131 0 0 9 0 9 9 0 8 0 bufpl 280 2326 0 105 159 0 159 159 0 8 0 anonpl 32 5428 0 0 45 0 45 45 0 246 1 amapchunkpl 152 8803 0 8257 22 0 22 22 0 158 0 amappl16 200 1893 0 1878 5 0 5 5 0 8 3 amappl15 192 9 0 9 1 0 1 1 0 8 1 amappl14 184 428 0 427 1 0 1 1 0 8 0 amappl13 176 119 0 107 1 0 1 1 0 8 0 amappl12 168 691 0 661 2 0 2 2 0 8 0 amappl11 160 3 0 3 1 0 1 1 0 8 1 amappl10 152 71 0 57 1 0 1 1 0 8 0 amappl9 144 284 0 284 1 0 1 1 0 8 1 amappl8 136 99 0 97 1 0 1 1 0 8 0 amappl7 128 156 0 142 1 0 1 1 0 8 0 amappl6 120 160 0 159 1 0 1 1 0 8 0 amappl5 112 93 0 82 1 0 1 1 0 8 0 amappl4 104 288 0 270 1 0 1 1 0 8 0 amappl3 96 1485 0 1388 3 0 3 3 0 8 0 amappl2 88 512 0 454 2 0 2 2 0 8 0 amappl1 80 9368 0 8768 15 0 15 15 0 8 0 amappl 88 2470 0 2323 4 0 4 4 0 92 0 uvmvnodes 80 98 0 0 2 0 2 2 0 8 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 442 0 412 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 442 0 412 1 0 1 1 0 8 0 vmmpekpl 168 5388 0 5354 2 0 2 2 0 8 0 vmmpepl 168 36466 0 34651 86 0 86 86 0 357 0 vmsppl 488 441 0 412 5 0 5 5 0 8 0 rwobjpl 80 13772 0 12789 24 0 24 24 0 8 0 pdppl 4096 891 0 824 97 12 85 85 0 8 18 pvpl 32 11428 0 0 93 0 93 93 0 265 0 pmappl 256 441 0 412 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 264 0 15 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83890ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff83aaa540) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83aaa540) at __mp_lock+0x192 sys/kern/kern_lock.c:173 intr_handler(ffff8000337b1eb0,ffff8000002a3480) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x6fc43e8fef40, count: 9 ddb{0}> trace x86_ipi_db(ffffffff83890ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff83aaa540) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83aaa540) at __mp_lock+0x192 sys/kern/kern_lock.c:173 intr_handler(ffff8000337b1eb0,ffff8000002a3480) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x6fc43e8fef40, count: -6 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x25: addq $0x8,%rsp db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83436526) at panic+0x1e5 sys/kern/subr_prf.c:198 ffs_inode_alloc(fffffd8068b9f150,2000,fffffd80097fd2d8,ffff80003c3eb850) at ffs_inode_alloc+0x94e ufs_makeinode(2000,fffffd8068bab368,ffff80003c3eba68,ffff80003c3eba98) at ufs_makeinode+0xcd sys/ufs/ufs/ufs_vnops.c:1732 ufs_mknod(ffff80003c3eb910) at ufs_mknod+0x5b sys/ufs/ufs/ufs_vnops.c:167 VOP_MKNOD(fffffd8068bab368,ffff80003c3eba68,ffff80003c3eba98,ffff80003c3eb998) at VOP_MKNOD+0x101 sys/kern/vfs_vops.c:121 domknodat(ffff80003bfd8fb0,ffffff9c,200000000000,2000,6381) at domknodat+0x469 sys/kern/vfs_syscalls.c:1659 syscall(ffff80003c3ebc30) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c3ebc30) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6e1af96ae70, count: 6 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83436526) at panic+0x1e5 sys/kern/subr_prf.c:198 ffs_inode_alloc(fffffd8068b9f150,2000,fffffd80097fd2d8,ffff80003c3eb850) at ffs_inode_alloc+0x94e ufs_makeinode(2000,fffffd8068bab368,ffff80003c3eba68,ffff80003c3eba98) at ufs_makeinode+0xcd sys/ufs/ufs/ufs_vnops.c:1732 ufs_mknod(ffff80003c3eb910) at ufs_mknod+0x5b sys/ufs/ufs/ufs_vnops.c:167 VOP_MKNOD(fffffd8068bab368,ffff80003c3eba68,ffff80003c3eba98,ffff80003c3eb998) at VOP_MKNOD+0x101 sys/kern/vfs_vops.c:121 domknodat(ffff80003bfd8fb0,ffffff9c,200000000000,2000,6381) at domknodat+0x469 sys/kern/vfs_syscalls.c:1659 syscall(ffff80003c3ebc30) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c3ebc30) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6e1af96ae70, count: -9