`ךq"l.e'6Z;=lt ]T;a%*Vvoߙ‹Gû2{5-TnYvOH1hqyOMza{Iuvm_fault(0xffffffff834f6bf0, 0xffff800011ec2000, 0, 1) -> d kernel: page fault trap, code=0 Stopped at ffs2_balloc+0x9fe: movq 0(%rcx,%rax,8),%r14 TID PID UID PRFLAGS PFLAGS CPU COMMAND *382693 90489 0 0x2 0x1 1K syz-executor 440181 64239 0 0x14000 0x40000200 0 softclock ffs2_balloc(fffffd8076b27cc0,3133c,50,fffffd807f7d3618,1,ffff80002a116838) at ffs2_balloc+0x9fe sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff80002a1168c0) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd807cb85368,ffff80002a116978,3,fffffd807f7d3618) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff8000ffff7460,fffffd807cb85368,fffffd807f7d3618,ffff80002a116a40,ffff80002a116a20) at ktrwriteraw+0x1bc sys/kern/kern_ktrace.c:682 ktrsysret(ffff8000ffff7460,5b,0,ffff80002a116b10) at ktrsysret+0x18b sys/kern/kern_ktrace.c:206 syscall(ffff80002a116bc0) at syscall+0xa2f mi_syscall_return sys/sys/syscall_mi.h:209 [inline] syscall(ffff80002a116bc0) at syscall+0xa2f sys/arch/amd64/amd64/trap.c:598 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x763e3eb10e60, count: 8 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: uvm_fault(0xffffffff834f6bf0, 0xffff800011ec2000, 0, 1) -> d ddb{1}> trace ffs2_balloc(fffffd8076b27cc0,3133c,50,fffffd807f7d3618,1,ffff80002a116838) at ffs2_balloc+0x9fe sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff80002a1168c0) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd807cb85368,ffff80002a116978,3,fffffd807f7d3618) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff8000ffff7460,fffffd807cb85368,fffffd807f7d3618,ffff80002a116a40,ffff80002a116a20) at ktrwriteraw+0x1bc sys/kern/kern_ktrace.c:682 ktrsysret(ffff8000ffff7460,5b,0,ffff80002a116b10) at ktrsysret+0x18b sys/kern/kern_ktrace.c:206 syscall(ffff80002a116bc0) at syscall+0xa2f mi_syscall_return sys/sys/syscall_mi.h:209 [inline] syscall(ffff80002a116bc0) at syscall+0xa2f sys/arch/amd64/amd64/trap.c:598 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x763e3eb10e60, count: -7 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002a1167e0 rbx 0 rdx 0 rcx 0xffff800011ec2000 rax 0 r8 0xffffffffffffffff r9 0xffff80002a116838 r10 0x1d16b94e64d92ebe r11 0x61d78ccdb4d17d9b r12 0x10 r13 0x1 r14 0xffffffff r15 0xfffffd80772d6d58 rip 0xffffffff8120cb1e ffs2_balloc+0x9fe cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff80002a116670 ss 0x10 ffs2_balloc+0x9fe: movq 0(%rcx,%rax,8),%r14 ddb{1}> show proc PROC (syz-executor) tid=382693 pid=90489 tcnt=1 stat=onproc flags process=2 proc=1 runpri=32, usrpri=83, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffff6530,0xffff8000371ca550 process=0xffff80002d572d68 user=0xffff80002a111000, vmspace=0xfffffd806be6ec08 estcpu=33, cpticks=1, pctcpu=0.73, user=1, sys=115, intr=1 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 25925 44491 2594 0 2 0 syz-executor 64512 172924 89728 0 2 0 syz-executor 64512 520195 89728 0 3 0x4000080 pppxread syz-executor 50320 2394 50475 0 2 0 syz-executor 50320 241028 50475 0 3 0x4000080 fsleep syz-executor 79058 444744 36936 0 2 0 syz-executor 79058 471391 36936 0 3 0x4000080 fsleep syz-executor 74300 2919 56948 0 2 0 syz-executor 74300 453537 56948 0 3 0x4000080 fsleep syz-executor 74300 366804 56948 0 3 0x4000080 fsleep syz-executor 38526 307662 90489 0 2 0x480 syz-executor 38526 258969 90489 0 3 0x4000080 sbwait syz-executor 38526 490706 90489 0 3 0x4000080 sbwait syz-executor 38526 399805 90489 0 3 0x4000080 fsleep syz-executor 31094 10123 9000 0 3 0x80 nanoslp syz-executor 31094 432 9000 0 3 0x4000080 netcon syz-executor 31094 232793 9000 0 3 0x4000080 fsleep syz-executor 90575 240550 0 0 3 0x14280 nfsidl nfsio 94042 174023 0 0 3 0x14280 nfsidl nfsio 83277 69210 0 0 3 0x14280 nfsidl nfsio 673 290754 0 0 3 0x14280 nfsidl nfsio 52110 51065 0 0 3 0x14280 nfsidl nfsio 32145 131872 0 0 3 0x14280 nfsidl nfsio 56372 453715 0 0 3 0x14280 nfsidl nfsio 69451 361989 0 0 3 0x14280 nfsidl nfsio 88994 420657 0 0 3 0x14280 nfsidl nfsio 11556 373699 0 0 3 0x14280 nfsidl nfsio 66675 327460 0 0 3 0x14280 nfsidl nfsio 69398 21753 0 0 3 0x14280 nfsidl nfsio 77182 130917 0 0 3 0x14280 nfsidl nfsio 17015 226726 0 0 3 0x14280 nfsidl nfsio 12252 386763 0 0 3 0x14280 nfsidl nfsio 71670 226573 0 0 3 0x14280 nfsidl nfsio 2539 493953 0 0 3 0x14280 nfsidl nfsio 33789 345985 0 0 3 0x14280 nfsidl nfsio 28107 440661 0 0 3 0x14280 nfsidl nfsio 88421 246444 0 0 3 0x14280 nfsidl nfsio *90489 382693 98587 0 7 0x3 syz-executor 2594 168857 98587 0 3 0x82 nanoslp syz-executor 89728 323045 98587 0 3 0x82 nanoslp syz-executor 56948 307149 98587 0 3 0x82 nanoslp syz-executor 9000 4353 98587 0 3 0x82 nanoslp syz-executor 50475 71691 98587 0 2 0x482 syz-executor 36936 468659 98587 0 2 0x482 syz-executor 86579 69020 98587 0 3 0x82 wait syz-executor 34051 114707 1 0 3 0x100083 ttyin getty 41338 355933 0 0 3 0x14200 acct acct 47258 104327 0 0 3 0x14200 bored sosplice 98587 316688 60296 0 3 0x82 kqread syz-executor 60296 201465 85300 0 3 0x10008a sigsusp ksh 85300 487132 40796 0 3 0x98 kqread sshd-session 40796 383425 56364 0 3 0x92 kqread sshd-session 56364 209418 1 0 3 0x88 kqread sshd 47148 88027 90303 74 3 0x1100092 bpf pflogd 90303 315365 1 0 3 0x80 sbwait pflogd 42906 198565 35308 73 3 0x1100090 kqread syslogd 35308 382733 1 0 3 0x100082 sbwait syslogd 60869 186555 1 0 3 0x100080 kqread resolvd 49250 504425 42538 77 3 0x100092 kqread dhcpleased 98585 422790 42538 77 3 0x100092 kqread dhcpleased 42538 46154 1 0 3 0x80 kqread dhcpleased 41814 491276 0 0 3 0x14200 bored smr 89287 319939 0 0 3 0x14200 pgzero zerothread 51354 31315 0 0 3 0x14200 aiodoned aiodoned 74452 334749 0 0 3 0x14200 syncer update 84466 237662 0 0 3 0x14200 cleaner cleaner 8821 328453 0 0 3 0x14200 reaper reaper 15307 24902 0 0 3 0x14200 pgdaemon pagedaemon 36992 38437 0 0 3 0x14200 bored viomb 79717 60080 0 0 3 0x40014200 acpi0 acpi0 22463 15042 0 0 3 0x40014200 idle1 21994 517949 0 0 3 0x14200 bored softnet3 39654 193002 0 0 3 0x14200 bored softnet2 44400 278247 0 0 3 0x14200 bored softnet1 7324 117706 0 0 3 0x14200 bored softnet0 34814 37471 0 0 3 0x14200 bored systqmp 12380 455774 0 0 3 0x14200 bored systq 34107 202792 0 0 3 0x14200 tmoslp softclockmp 64239 440181 0 0 7 0x40014200 softclock 9122 482669 0 0 3 0x40014200 idle0 1 203840 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 64512 (syz-executor) thread 0xffff80003720b1f0 (520195) exclusive rrwlock inode r = 0 (0xfffffd8076b27098) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 spec_open+0x302 sys/kern/spec_vnops.c:151 #6 VOP_OPEN+0x8b sys/kern/vfs_vops.c:138 #7 vn_open+0x708 sys/kern/vfs_vnops.c:177 #8 vndioctl+0xcb1 sys/dev/vnd.c:457 #9 VOP_IOCTL+0xac sys/kern/vfs_vops.c:264 #10 vn_ioctl+0xf6 sys/kern/vfs_vnops.c:525 #11 sys_ioctl+0x67c #12 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #12 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #13 Xsyscall+0x128 Process 90489 (syz-executor) thread 0xffff8000ffff7460 (382693) exclusive rrwlock inode r = 0 (0xfffffd8076b27d58) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 vget+0x2bd sys/kern/vfs_subr.c:676 #6 ktrwriteraw+0x172 sys/kern/kern_ktrace.c:679 #7 ktrsysret+0x18b sys/kern/kern_ktrace.c:206 #8 syscall+0xa2f mi_syscall_return sys/sys/syscall_mi.h:209 [inline] #8 syscall+0xa2f sys/arch/amd64/amd64/trap.c:598 #9 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff834fce00) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 syscall+0xa11 mi_syscall_return sys/sys/syscall_mi.h:207 [inline] #1 syscall+0xa11 sys/arch/amd64/amd64/trap.c:598 #2 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10216 10251K 10418K 166960K 11954 0 pcb 18 12K 12K 166960K 162 0 rtable 218 7K 8K 166960K 959 0 pf 39 18K 22K 166960K 113 0 ifaddr 43 7K 8K 166960K 114 0 ifgroup 62 2K 2K 166960K 130 0 sysctl 3 0K 0K 166960K 3 0 counters 66 36K 36K 166960K 104 0 ioctlops 0 0K 4K 166960K 1624 0 iov 0 0K 12K 166960K 119 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1464 92K 92K 166960K 2198 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 5K 9K 166960K 14 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 29 0 dirhash 12 2K 2K 166960K 45 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 18 65K 93K 166960K 1029 0 sigio 0 0K 0K 166960K 13 0 proc 70 91K 140K 166960K 1013 0 subproc 104 6K 6K 166960K 286 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 195 0 in_multi 99 7K 7K 166960K 293 0 ether_multi 1 0K 0K 166960K 8 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 103 466K 466K 166960K 103 0 exec 0 0K 1K 166960K 689 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 245 91K 91K 166960K 10392 0 UVM aobj 61 2K 2K 166960K 64 0 pinsyscall 43 86K 108K 166960K 2471 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 37 0 NDP 13 0K 2K 166960K 77 0 temp 61 6819K 6940K 166960K 33025 0 kqueue 13 20K 28K 166960K 131 0 SYN cache 2 8K 16K 166960K 3 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 24 0 0 1 0 1 1 0 8 0 rtpcb 120 146 0 143 2 1 1 2 0 8 0 rtentry 112 296 0 198 4 1 3 4 0 8 0 unpcb 144 689 0 664 9 4 5 6 0 8 4 syncache 336 5 0 5 2 2 0 1 0 8 0 tcpcb 808 297 0 291 9 7 2 8 0 8 0 arp 120 53 0 37 1 0 1 1 0 8 0 inpcb 336 1108 0 1097 19 10 9 9 0 8 7 nd6 136 71 0 45 1 0 1 1 0 8 0 pkpcb 40 3 0 3 2 1 1 1 0 8 1 kcovpl 48 22 0 14 1 0 1 1 0 8 0 ppxss 1168 4 0 4 2 1 1 1 0 8 1 pffrag 232 5 0 0 1 0 1 1 0 482 0 pffrnode 88 5 0 0 1 0 1 1 0 8 0 pffrent 40 6 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 pfrktable 1344 2 0 2 2 1 1 1 0 8 1 pftag 88 2 0 2 1 1 0 1 0 8 0 pfstitem 24 94 0 42 1 0 1 1 0 8 0 pfstkey 128 94 0 42 2 0 2 2 0 8 0 pfstate 376 94 0 42 6 0 6 6 0 8 0 pfrule 1344 27 0 19 2 0 2 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 1167 0 719 32 3 29 29 0 8 0 art_table 32 1169 0 719 4 0 4 4 0 8 0 art_node 16 292 0 205 1 0 1 1 0 8 0 sysvmsgpl 40 10 0 4 1 0 1 1 0 8 0 semapl 112 26 0 16 1 0 1 1 0 8 0 shmpl 112 61 0 3 2 0 2 2 0 8 0 dirhash 1024 41 0 24 3 0 3 3 0 8 0 dino2pl 256 2937 0 1402 97 0 97 97 0 8 0 ffsino 272 2937 0 1402 103 0 103 103 0 8 0 nchpl 144 4131 0 2426 64 0 64 64 0 8 0 uvmvnodes 80 3572 0 0 73 0 73 73 0 8 0 vnodes 216 3572 0 0 199 0 199 199 0 8 0 namei 1024 15095 0 15095 2 1 1 1 0 8 1 percpumem 16 66 0 19 1 0 1 1 0 8 0 kstatmem 264 64 0 38 2 0 2 2 0 8 0 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 216 23763 0 23763 11 10 1 8 1 8 1 plimitpl 152 209 0 189 1 0 1 1 0 8 0 sigapl 424 1323 0 1251 11 2 9 9 0 8 0 futexpl 64 10836 0 10830 3 2 1 1 0 8 0 knotepl 120 511 0 0 15 0 15 15 0 8 0 kqueuepl 216 186 0 177 1 0 1 1 0 8 0 pipepl 320 206 0 179 3 0 3 3 0 8 0 fdescpl 496 1283 0 1251 6 1 5 5 0 8 0 filepl 152 7401 0 7136 23 5 18 19 0 8 7 lockfpl 104 486 0 483 2 0 2 2 0 8 1 lockfspl 48 116 0 113 1 0 1 1 0 8 0 sessionpl 144 38 0 29 1 0 1 1 0 8 0 pgrppl 48 98 0 81 1 0 1 1 0 8 0 ucredpl 104 1149 0 1135 1 0 1 1 0 8 0 zombiepl 144 1252 0 1251 1 0 1 1 0 8 0 processpl 1160 1323 0 1251 7 1 6 6 0 8 0 procpl 648 2498 0 2416 10 2 8 8 0 8 0 sosppl 168 5 0 5 2 1 1 1 0 8 1 sockpl 664 1958 0 1919 27 15 12 15 0 8 8 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 5 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 244 0 0 31 0 31 31 0 8 1 mtagpl 96 8 0 0 1 0 1 1 0 8 0 mbufpl 256 496 0 0 28 0 28 28 0 8 0 bufpl 280 8990 0 2042 498 1 497 497 0 8 0 anonpl 24 245516 0 237773 84 30 54 59 0 185 4 amapchunkpl 152 34590 0 33827 46 15 31 33 0 158 0 amappl16 200 4910 0 4881 25 10 15 21 0 8 8 amappl15 192 9 0 9 1 1 0 1 0 8 0 amappl14 184 145 0 133 1 0 1 1 0 8 0 amappl13 176 11 0 11 1 1 0 1 0 8 0 amappl12 168 2149 0 2118 3 1 2 2 0 8 0 amappl11 160 68 0 54 1 0 1 1 0 8 0 amappl10 152 13 0 13 1 1 0 1 0 8 0 amappl9 144 170 0 169 2 1 1 1 0 8 0 amappl8 136 22 0 20 1 0 1 1 0 8 0 amappl7 128 138 0 126 1 0 1 1 0 8 0 amappl6 120 320 0 317 1 0 1 1 0 8 0 amappl5 112 193 0 181 1 0 1 1 0 8 0 amappl4 104 364 0 342 1 0 1 1 0 8 0 amappl3 96 6018 0 5908 3 0 3 3 0 8 0 amappl2 88 1524 0 1445 2 0 2 2 0 8 0 amappl1 80 11469 0 10872 17 3 14 15 0 8 0 amappl 88 9858 0 9676 5 0 5 5 0 92 0 dma16384 16384 1 0 1 1 0 1 1 0 8 1 dma8192 8192 1 0 1 1 1 0 1 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 7 0 7 2 2 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 63 0 3 2 0 2 2 0 8 0 uaddrrnd 24 1283 0 1251 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1283 0 1251 1 0 1 1 0 8 0 vmmpekpl 168 11737 0 11695 3 0 3 3 0 8 0 vmmpepl 168 84657 0 82702 105 8 97 102 0 357 10 vmsppl 440 1282 0 1251 6 2 4 5 0 8 0 rwobjpl 56 29375 0 24770 69 1 68 68 0 8 2 pdppl 4096 2573 0 2502 123 52 71 85 0 8 0 pvpl 32 28831 0 0 233 0 233 233 0 265 0 pmappl 248 1282 0 1251 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 463 0 80 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83436ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 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(ffffffff834fcbf8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff834fcbf8) at __mp_lock+0x192 sys/kern/kern_lock.c:144 __mp_acquire_count(ffffffff834fcbf8,1) at __mp_acquire_count+0x58 mi_switch() at mi_switch+0x658 sys/kern/sched_bsd.c:460 sleep_finish(0,1) at sleep_finish+0x219 sys/kern/kern_synch.c:416 msleep(ffffffff8350f970,ffffffff83468390,0,ffffffff830e1333,0) at msleep+0x13b sys/kern/kern_synch.c:249 softclock_thread(ffff8000fffff6c8) at softclock_thread+0x11f sys/kern/kern_timeout.c:807 end trace frame: 0x0, count: 6 ddb{0}> trace x86_ipi_db(ffffffff83436ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 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(ffffffff834fcbf8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff834fcbf8) at __mp_lock+0x192 sys/kern/kern_lock.c:144 __mp_acquire_count(ffffffff834fcbf8,1) at __mp_acquire_count+0x58 mi_switch() at mi_switch+0x658 sys/kern/sched_bsd.c:460 sleep_finish(0,1) at sleep_finish+0x219 sys/kern/kern_synch.c:416 msleep(ffffffff8350f970,ffffffff83468390,0,ffffffff830e1333,0) at msleep+0x13b sys/kern/kern_synch.c:249 softclock_thread(ffff8000fffff6c8) at softclock_thread+0x11f sys/kern/kern_timeout.c:807 end trace frame: 0x0, count: -9 ddb{0}> machine ddbcpu 1 Stopped at ffs2_balloc+0x9fe: movq 0(%rcx,%rax,8),%r14 ffs2_balloc(fffffd8076b27cc0,3133c,50,fffffd807f7d3618,1,ffff80002a116838) at ffs2_balloc+0x9fe sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff80002a1168c0) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd807cb85368,ffff80002a116978,3,fffffd807f7d3618) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff8000ffff7460,fffffd807cb85368,fffffd807f7d3618,ffff80002a116a40,ffff80002a116a20) at ktrwriteraw+0x1bc sys/kern/kern_ktrace.c:682 ktrsysret(ffff8000ffff7460,5b,0,ffff80002a116b10) at ktrsysret+0x18b sys/kern/kern_ktrace.c:206 syscall(ffff80002a116bc0) at syscall+0xa2f mi_syscall_return sys/sys/syscall_mi.h:209 [inline] syscall(ffff80002a116bc0) at syscall+0xa2f sys/arch/amd64/amd64/trap.c:598 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x763e3eb10e60, count: 8 ddb{1}> trace ffs2_balloc(fffffd8076b27cc0,3133c,50,fffffd807f7d3618,1,ffff80002a116838) at ffs2_balloc+0x9fe sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff80002a1168c0) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd807cb85368,ffff80002a116978,3,fffffd807f7d3618) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff8000ffff7460,fffffd807cb85368,fffffd807f7d3618,ffff80002a116a40,ffff80002a116a20) at ktrwriteraw+0x1bc sys/kern/kern_ktrace.c:682 ktrsysret(ffff8000ffff7460,5b,0,ffff80002a116b10) at ktrsysret+0x18b sys/kern/kern_ktrace.c:206 syscall(ffff80002a116bc0) at syscall+0xa2f mi_syscall_return sys/sys/syscall_mi.h:209 [inline] syscall(ffff80002a116bc0) at syscall+0xa2f sys/arch/amd64/amd64/trap.c:598 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x763e3eb10e60, count: -7