panic: ffs_valloc: dup alloc Stopped at db_enter+0x17: popq %rbp TID PID UID PRFLAGS PFLAGS CPU COMMAND 388531 21724 0 0x2 0 0 ifconfig *316501 34351 0 0 0x4000000 1K syz-executor db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457 panic(ffffffff84a364e0) at panic+0x296 sys/kern/subr_prf.c:198 ffs_inode_alloc(ffff800001bb2878,8000,ffff8000001197b8,ffff800029a66250) at ffs_inode_alloc+0xd4b ufs_makeinode(8000,ffff800001c4ce88,ffff800029a66840,ffff800029a66870) at ufs_makeinode+0x1fc sys/ufs/ufs/ufs_vnops.c:1759 ufs_create(ffff800029a663a0) at ufs_create+0xcf sys/ufs/ufs/ufs_vnops.c:147 VOP_CREATE(ffff800001c4ce88,ffff800029a66840,ffff800029a66870,ffff800029a664c0) at VOP_CREATE+0x1ed sys/kern/vfs_vops.c:103 vn_open(ffff800029a66810,201,0) at vn_open+0x720 sys/kern/vfs_vnops.c:118 doopenat(ffff8000298522b0,ffffff9c,200000000240,200,0,0,ffff800029a66b80) at doopenat+0x51b sys/kern/vfs_syscalls.c:1163 sys_open(ffff8000298522b0,ffff800029a66b80,ffff800029a66ae0) at sys_open+0x86 sys/kern/vfs_syscalls.c:1065 syscall(ffff800029a66b80) at syscall+0x118e mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800029a66b80) at syscall+0x118e sys/arch/amd64/amd64/trap.c:791 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9a9d331c7f0, 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 *cpu1: ffs_valloc: dup alloc ddb{1}> show kasan kasan: no report recorded this boot ddb{1}> trace db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457 panic(ffffffff84a364e0) at panic+0x296 sys/kern/subr_prf.c:198 ffs_inode_alloc(ffff800001bb2878,8000,ffff8000001197b8,ffff800029a66250) at ffs_inode_alloc+0xd4b ufs_makeinode(8000,ffff800001c4ce88,ffff800029a66840,ffff800029a66870) at ufs_makeinode+0x1fc sys/ufs/ufs/ufs_vnops.c:1759 ufs_create(ffff800029a663a0) at ufs_create+0xcf sys/ufs/ufs/ufs_vnops.c:147 VOP_CREATE(ffff800001c4ce88,ffff800029a66840,ffff800029a66870,ffff800029a664c0) at VOP_CREATE+0x1ed sys/kern/vfs_vops.c:103 vn_open(ffff800029a66810,201,0) at vn_open+0x720 sys/kern/vfs_vnops.c:118 doopenat(ffff8000298522b0,ffffff9c,200000000240,200,0,0,ffff800029a66b80) at doopenat+0x51b sys/kern/vfs_syscalls.c:1163 sys_open(ffff8000298522b0,ffff800029a66b80,ffff800029a66ae0) at sys_open+0x86 sys/kern/vfs_syscalls.c:1065 syscall(ffff800029a66b80) at syscall+0x118e mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800029a66b80) at syscall+0x118e sys/arch/amd64/amd64/trap.c:791 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9a9d331c7f0, count: -11 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800029a65e90 rbx 0xdfff908000000004 rdx 0 rcx 0xffff800028f93ff0 rax 0xffff800000165d00 r8 0xffffffff r9 0 r10 0xffff800029a65df8 r11 0xffffffff8226a080 x86_bus_space_io_read_1 r12 0xffff800028f94e0f r13 0xffff800028f94c10 r14 0x1ffff0000534cbdc r15 0x1 rip 0xffffffff81169c17 db_enter+0x17 cs 0x8 rflags 0x246 rsp 0xffff800029a65e90 ss 0 db_enter+0x17: popq %rbp ddb{1}> show proc PROC (syz-executor) tid=316501 pid=34351 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=0xffff8000298527e0,0xffff8000298534e8 process=0xffff80002999ebc0 user=0xffff800029a5b000, vmspace=0xffff800001bc77c0 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND 21724 388531 91758 0 7 0x2 0 ifconfig 91758 282814 76115 0 3 0x100002 0x88 sigsusp sh 25716 87349 58639 0 2 0 0 syz-executor 34351 18251 93528 0 2 0 0 syz-executor *34351 316501 93528 0 7 0 0x4000000 syz-executor 2002 361005 46784 0 2 0 0 syz-executor 2002 447858 46784 0 3 0 0x4000080 fsleep syz-executor 2002 230546 46784 0 3 0 0x4000080 fsleep syz-executor 43625 238469 71374 0 2 0 0 syz-executor 43625 159323 71374 0 3 0 0x4000080 msgwait syz-executor 72934 277667 20454 0 2 0x10 0 syz-executor 72934 143026 20454 0 3 0x10 0x4000080 fsleep syz-executor 22305 461273 63217 0 2 0 0 syz-executor 22305 277105 63217 0 3 0 0x4000080 kqread syz-executor 22305 265850 63217 0 3 0 0x4000080 fsleep syz-executor 76115 389186 11568 0 3 0x2 0x80 wait syz-executor 20454 154733 11568 0 3 0x2 0x80 nanoslp syz-executor 63217 102797 11568 0 3 0x2 0x80 nanoslp syz-executor 46784 86424 11568 0 3 0x2 0x80 nanoslp syz-executor 71374 294447 11568 0 3 0x2 0x80 nanoslp syz-executor 7756 460872 0 0 3 0x14000 0x280 nfsidl nfsio 58546 164936 0 0 3 0x14000 0x280 nfsidl nfsio 21590 448950 0 0 3 0x14000 0x280 nfsidl nfsio 85262 429659 0 0 3 0x14000 0x280 nfsidl nfsio 99698 42633 0 0 3 0x14000 0x280 nfsidl nfsio 8740 6996 0 0 3 0x14000 0x280 nfsidl nfsio 38337 513082 0 0 3 0x14000 0x280 nfsidl nfsio 64005 105947 0 0 3 0x14000 0x280 nfsidl nfsio 88628 287315 0 0 3 0x14000 0x280 nfsidl nfsio 60750 139825 0 0 3 0x14000 0x280 nfsidl nfsio 47726 428585 0 0 3 0x14000 0x280 nfsidl nfsio 45224 33446 0 0 3 0x14000 0x280 nfsidl nfsio 90215 484596 0 0 3 0x14000 0x280 nfsidl nfsio 52208 123586 0 0 3 0x14000 0x280 nfsidl nfsio 57203 268273 0 0 3 0x14000 0x280 nfsidl nfsio 70358 118782 0 0 3 0x14000 0x280 nfsidl nfsio 76162 335666 0 0 3 0x14000 0x280 nfsidl nfsio 88812 222918 0 0 3 0x14000 0x280 nfsidl nfsio 52617 214889 0 0 3 0x14000 0x280 nfsidl nfsio 93329 27938 0 0 3 0x14000 0x280 nfsidl nfsio 93528 226567 11568 0 3 0x2 0x80 nanoslp syz-executor 58639 183383 11568 0 3 0x2 0x80 nanoslp syz-executor 11568 241443 18606 0 3 0x2 0x80 wait syz-executor 18606 134658 29171 0 3 0x100002 0x88 sigsusp ksh 29171 270465 65530 0 3 0x10 0x88 kqread sshd-session 65530 312314 80399 0 3 0x12 0x80 kqread sshd-session 95388 394511 1 0 3 0x100003 0x80 ttyin getty 80399 191192 1 0 3 0 0x88 kqread sshd 12326 84879 65252 74 3 0x1100012 0x80 bpf pflogd 65252 374690 1 0 3 0 0x80 sbwait pflogd 95944 510123 95316 73 3 0x1100010 0x80 kqread syslogd 95316 70999 1 0 3 0x100002 0x80 sbwait syslogd-parent 77866 364106 1 0 3 0x100000 0x80 kqread resolvd 17692 315311 6016 77 3 0x100012 0x80 kqread dhcpleased 69330 68752 6016 77 3 0x100012 0x80 kqread dhcpleased 6016 16867 1 0 3 0 0x80 kqread dhcpleased 56601 342633 0 0 3 0x14000 0x200 bored smr 74134 198667 0 0 2 0x14000 0x200 zerothread 63786 292600 0 0 3 0x14000 0x200 aiodoned aiodoned 45207 226262 0 0 3 0x14000 0x200 syncer update 72484 360919 0 0 3 0x14000 0x200 cleaner cleaner 83069 240281 0 0 3 0x14000 0x200 reaper reaper 86526 518315 0 0 3 0x14000 0x200 pgdaemon pagedaemon 84333 256676 0 0 3 0x14000 0x200 bored viomb 44831 197839 0 0 3 0x14000 0x40000200 acpi0 acpi0 93779 238476 0 0 3 0x14000 0x40000200 idle1 98080 422738 0 0 3 0x14000 0x200 bored softnet1 63099 46059 0 0 3 0x14000 0x200 bored softnet0 84688 150146 0 0 3 0x14000 0x200 bored systqmp 58967 7567 0 0 3 0x14000 0x200 bored systq 63825 24926 0 0 3 0x14000 0x200 tmoslp softclockmp 49868 358375 0 0 3 0x14000 0x40000200 tmoslp softclock 18006 468458 0 0 3 0x14000 0x40000200 idle0 1 224574 0 0 3 0x2 0x80 wait init 0 0 -1 0 3 0x10000 0x200 scheduler swapper ddb{1}> show all locks Process 34351 (syz-executor) thread 0xffff8000298522b0 (316501) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff85602680) #0 witness_lock+0x534 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x534 sys/kern/subr_witness.c:1160 #1 __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 #2 mi_switch+0x73e sys/kern/sched_bsd.c:443 #3 sleep_finish+0x3dc sys/kern/kern_synch.c:369 #4 biowait+0xe6 sys/kern/vfs_bio.c:1110 #5 ffs_vget+0x508 sys/ufs/ffs/ffs_vfsops.c:1249 #6 ffs_inode_alloc+0x579 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_makeinode+0x1fc sys/ufs/ufs/ufs_vnops.c:1759 #8 ufs_create+0xcf sys/ufs/ufs/ufs_vnops.c:147 #9 VOP_CREATE+0x1ed sys/kern/vfs_vops.c:103 #10 vn_open+0x720 sys/kern/vfs_vnops.c:118 #11 doopenat+0x51b sys/kern/vfs_syscalls.c:1163 #12 sys_open+0x86 sys/kern/vfs_syscalls.c:1065 #13 syscall+0x118e mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0x118e sys/arch/amd64/amd64/trap.c:791 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xffff800001bb2478) #0 witness_lock+0x534 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x534 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x4e4 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xf5 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0x186 sys/kern/vfs_vops.c:527 #4 ufs_ihashins+0xdc sys/ufs/ufs/ufs_ihash.c:152 #5 ffs_vget+0x2fc sys/ufs/ffs/ffs_vfsops.c:1232 #6 ffs_inode_alloc+0x579 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_makeinode+0x1fc sys/ufs/ufs/ufs_vnops.c:1759 #8 ufs_create+0xcf sys/ufs/ufs/ufs_vnops.c:147 #9 VOP_CREATE+0x1ed sys/kern/vfs_vops.c:103 #10 vn_open+0x720 sys/kern/vfs_vnops.c:118 #11 doopenat+0x51b sys/kern/vfs_syscalls.c:1163 #12 sys_open+0x86 sys/kern/vfs_syscalls.c:1065 #13 syscall+0x118e mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0x118e sys/arch/amd64/amd64/trap.c:791 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xffff800001bb2918) #0 witness_lock+0x534 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x534 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x4e4 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xf5 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0x186 sys/kern/vfs_vops.c:527 #4 vn_lock+0xba sys/kern/vfs_vnops.c:576 #5 vfs_lookup+0x1da sys/kern/vfs_lookup.c:431 #6 namei+0xcba sys/kern/vfs_lookup.c:250 #7 vn_open+0x33e sys/kern/vfs_vnops.c:109 #8 doopenat+0x51b sys/kern/vfs_syscalls.c:1163 #9 sys_open+0x86 sys/kern/vfs_syscalls.c:1065 #10 syscall+0x118e mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0x118e sys/arch/amd64/amd64/trap.c:791 #11 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11062 12250K 12394K 166960K 12243 0 pcb 17 26K 30K 166960K 79 0 rtable 238 16K 31K 166960K 774 0 pf 37 23K 530K 166960K 99 0 ifaddr 46 13K 14K 166960K 107 0 ifgroup 59 2K 2K 166960K 124 0 sysctl 3 1K 13K 166960K 7 0 counters 72 43K 44K 166960K 108 0 ioctlops 1 0K 185K 166960K 1519 0 iov 0 0K 16K 166960K 8 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1359 88K 89K 166960K 1744 0 UFS quota 1 36K 36K 166960K 1 0 UFS mount 5 44K 44K 166960K 5 0 shm 2 2K 6K 166960K 9 0 VM map 2 1K 1K 166960K 2 0 sem 18 1K 2K 166960K 22 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1734 201K 413K 166960K 11964 0 file desc 22 71K 113K 166960K 501 0 proc 109 130K 182K 166960K 972 0 subproc 91 11K 12K 166960K 210 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 20K 20K 166960K 1 0 ip_moptions 0 0K 10K 166960K 134 0 in_multi 99 7K 8K 166960K 253 0 ether_multi 1 0K 0K 166960K 1 0 mrt 2 0K 0K 166960K 14 0 ISOFS mount 1 36K 36K 166960K 1 0 MSDOSFS mount 1 20K 20K 166960K 1 0 ttys 49 344K 344K 166960K 49 0 exec 20 5K 18K 166960K 589 0 fusefs mount 1 36K 36K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 1K 1K 166960K 3 0 VM swap 14 124K 124K 166960K 15 0 UVM amap 458 281K 364K 166960K 5600 0 UVM aobj 43 5K 5K 166960K 43 0 pinsyscall 118 213K 385K 166960K 2053 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 1 0 NDP 19 0K 2K 166960K 74 0 temp 540 9312K 9470K 166960K 7957 0 kqueue 16 52K 84K 166960K 54 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 28 0 0 1 0 1 1 0 8 0 rtpcb 120 67 0 64 1 0 1 1 0 8 0 rtentry 176 266 0 167 6 0 6 6 0 8 0 unpcb 144 198 0 181 4 0 4 4 0 8 3 syncache 336 4 0 4 2 2 0 1 0 8 0 tcpcb 736 16 0 12 1 0 1 1 0 8 0 arp 136 46 0 30 1 0 1 1 0 8 0 inpcb 328 237 0 229 4 2 2 4 0 8 1 nd6 152 67 0 46 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 1 0 1 0 8 0 kcovpl 48 23 0 15 1 0 1 1 0 8 0 ppxss 1192 3 0 3 2 2 0 1 0 8 0 pffrag 232 1 0 0 1 0 1 1 0 482 0 pffrnode 88 1 0 0 1 0 1 1 0 8 0 pffrent 40 2 0 1 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 pfanchor 1288 4 0 0 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfqueue 320 1 0 0 1 0 1 1 0 8 0 pfstitem 24 36 0 0 1 0 1 1 0 8 0 pfstkey 128 36 0 0 2 0 2 2 0 8 0 pfstate 448 36 0 0 4 0 4 4 0 8 0 pfrule 1360 23 0 18 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1074 0 662 29 0 29 29 0 8 3 art_table 40 1075 0 662 5 0 5 5 0 8 0 art_node 32 266 0 176 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 3 1 1 0 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 72 17 0 1 1 0 1 1 0 8 0 shmpl 120 40 0 0 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2001 0 492 95 0 95 95 0 8 0 ffsino 296 2001 0 492 117 0 117 117 0 8 0 nchpl 144 2419 0 659 66 0 66 66 0 8 0 rtmask 32 1 0 1 1 1 0 1 0 8 0 vnodes 216 2275 0 0 127 0 127 127 0 8 0 namei 1024 10022 0 10021 2 1 1 2 0 8 0 percpumem 16 70 0 19 1 0 1 1 0 8 0 kstatmem 264 63 0 36 3 1 2 3 0 8 0 scxspl 216 8721 0 8721 5 4 1 4 1 8 1 plimitpl 152 54 0 37 1 0 1 1 0 8 0 sigapl 424 807 0 739 8 0 8 8 0 8 0 knotepl 120 65 0 0 2 0 2 2 0 8 0 kqueuepl 224 66 0 55 1 0 1 1 0 8 0 pipepl 344 234 0 207 6 0 6 6 0 8 2 fdescpl 528 771 0 739 3 0 3 3 0 8 0 filepl 160 3611 0 3398 15 1 14 14 0 8 3 lockfpl 104 51 0 49 1 0 1 1 0 8 0 lockfspl 48 24 0 22 1 0 1 1 0 8 0 sessionpl 144 43 0 34 1 0 1 1 0 8 0 pgrppl 48 66 0 49 1 0 1 1 0 8 0 ucredpl 104 732 0 718 1 0 1 1 0 8 0 zombiepl 144 740 0 739 1 0 1 1 0 8 0 processpl 1240 807 0 739 6 0 6 6 0 8 0 procpl 664 1077 0 1002 7 0 7 7 0 8 0 sockpl 752 507 0 479 13 3 10 10 0 8 7 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k128 9344 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 117 0 0 15 0 15 15 0 8 0 mcl2k 2048 20 0 0 3 0 3 3 0 8 0 mextrefs 64 18 0 0 1 0 1 1 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 203 0 0 13 0 13 13 0 8 0 bufpl 272 2922 0 92 189 0 189 189 0 8 0 anonpl 32 7293 0 0 60 1 59 59 0 222 0 amapchunkpl 152 15889 0 15462 28 9 19 27 0 158 0 amappl16 200 2179 0 2156 6 3 3 5 0 8 0 amappl15 192 5 0 4 1 0 1 1 0 8 0 amappl14 184 632 0 630 1 0 1 1 0 8 0 amappl13 176 184 0 172 1 0 1 1 0 8 0 amappl12 168 1089 0 1060 2 0 2 2 0 8 0 amappl11 160 13 0 13 1 1 0 1 0 8 0 amappl10 152 66 0 54 1 0 1 1 0 8 0 amappl9 144 296 0 296 1 1 0 1 0 8 0 amappl8 136 157 0 154 1 0 1 1 0 8 0 amappl7 128 180 0 168 1 0 1 1 0 8 0 amappl6 120 202 0 200 1 0 1 1 0 8 0 amappl5 112 209 0 199 1 0 1 1 0 8 0 amappl4 104 339 0 320 1 0 1 1 0 8 0 amappl3 96 3175 0 3067 5 1 4 4 0 8 1 amappl2 88 526 0 469 2 0 2 2 0 8 0 amappl1 80 12988 0 12378 15 1 14 15 0 8 0 amappl 88 4616 0 4467 4 0 4 4 0 92 0 uvmvnodes 80 105 0 0 3 0 3 3 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 42 0 0 1 0 1 1 0 8 0 uaddrrnd 24 771 0 739 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 771 0 739 1 0 1 1 0 8 0 vmmpekpl 168 8088 0 8041 3 0 3 3 0 8 0 vmmpepl 168 58802 0 56928 90 4 86 88 0 357 1 vmsppl 488 770 0 739 6 1 5 5 0 8 0 rwobjpl 80 19636 0 18573 25 2 23 24 0 8 0 pdppl 4096 1551 0 1478 125 50 75 87 0 8 2 pvpl 32 14312 0 0 116 0 116 116 0 265 0 pmappl 256 770 0 739 4 1 3 3 0 8 0 extentpl 40 47 0 29 1 0 1 1 0 8 0 phpool 120 494 0 57 14 0 14 14 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1f: addq $0x8,%rsp x86_ipi_db(ffffffff85214ff0) at x86_ipi_db+0x1f sys/arch/amd64/amd64/db_interface.c:412 x86_ipi_handler() at x86_ipi_handler+0xfd sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x1a kd_curproc sys/dev/kcov.c:584 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x1a sys/dev/kcov.c:153 __mp_lock(ffffffff85601e80) at __mp_lock+0x290 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff85601e80) at __mp_lock+0x290 sys/kern/kern_lock.c:173 syscall(ffff80003bb11210) at syscall+0x10c1 mi_syscall sys/sys/syscall_mi.h:175 [inline] syscall(ffff80003bb11210) at syscall+0x10c1 sys/arch/amd64/amd64/trap.c:791 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a29c68da070, count: 8 ddb{0}> trace x86_ipi_db(ffffffff85214ff0) at x86_ipi_db+0x1f sys/arch/amd64/amd64/db_interface.c:412 x86_ipi_handler() at x86_ipi_handler+0xfd sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x1a kd_curproc sys/dev/kcov.c:584 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x1a sys/dev/kcov.c:153 __mp_lock(ffffffff85601e80) at __mp_lock+0x290 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff85601e80) at __mp_lock+0x290 sys/kern/kern_lock.c:173 syscall(ffff80003bb11210) at syscall+0x10c1 mi_syscall sys/sys/syscall_mi.h:175 [inline] syscall(ffff80003bb11210) at syscall+0x10c1 sys/arch/amd64/amd64/trap.c:791 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a29c68da070, count: -7 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x17: popq %rbp db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457 panic(ffffffff84a364e0) at panic+0x296 sys/kern/subr_prf.c:198 ffs_inode_alloc(ffff800001bb2878,8000,ffff8000001197b8,ffff800029a66250) at ffs_inode_alloc+0xd4b ufs_makeinode(8000,ffff800001c4ce88,ffff800029a66840,ffff800029a66870) at ufs_makeinode+0x1fc sys/ufs/ufs/ufs_vnops.c:1759 ufs_create(ffff800029a663a0) at ufs_create+0xcf sys/ufs/ufs/ufs_vnops.c:147 VOP_CREATE(ffff800001c4ce88,ffff800029a66840,ffff800029a66870,ffff800029a664c0) at VOP_CREATE+0x1ed sys/kern/vfs_vops.c:103 vn_open(ffff800029a66810,201,0) at vn_open+0x720 sys/kern/vfs_vnops.c:118 doopenat(ffff8000298522b0,ffffff9c,200000000240,200,0,0,ffff800029a66b80) at doopenat+0x51b sys/kern/vfs_syscalls.c:1163 sys_open(ffff8000298522b0,ffff800029a66b80,ffff800029a66ae0) at sys_open+0x86 sys/kern/vfs_syscalls.c:1065 syscall(ffff800029a66b80) at syscall+0x118e mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800029a66b80) at syscall+0x118e sys/arch/amd64/amd64/trap.c:791 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9a9d331c7f0, count: 4 ddb{1}> trace db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457 panic(ffffffff84a364e0) at panic+0x296 sys/kern/subr_prf.c:198 ffs_inode_alloc(ffff800001bb2878,8000,ffff8000001197b8,ffff800029a66250) at ffs_inode_alloc+0xd4b ufs_makeinode(8000,ffff800001c4ce88,ffff800029a66840,ffff800029a66870) at ufs_makeinode+0x1fc sys/ufs/ufs/ufs_vnops.c:1759 ufs_create(ffff800029a663a0) at ufs_create+0xcf sys/ufs/ufs/ufs_vnops.c:147 VOP_CREATE(ffff800001c4ce88,ffff800029a66840,ffff800029a66870,ffff800029a664c0) at VOP_CREATE+0x1ed sys/kern/vfs_vops.c:103 vn_open(ffff800029a66810,201,0) at vn_open+0x720 sys/kern/vfs_vnops.c:118 doopenat(ffff8000298522b0,ffffff9c,200000000240,200,0,0,ffff800029a66b80) at doopenat+0x51b sys/kern/vfs_syscalls.c:1163 sys_open(ffff8000298522b0,ffff800029a66b80,ffff800029a66ae0) at sys_open+0x86 sys/kern/vfs_syscalls.c:1065 syscall(ffff800029a66b80) at syscall+0x118e mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800029a66b80) at syscall+0x118e sys/arch/amd64/amd64/trap.c:791 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9a9d331c7f0, count: -11