uvm_fault(0xffffffff836190a8, 0xffff8000166c2000, 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 *246391 28662 0 0x2 0x1 1K syz-executor 210489 68791 0 0x2 0 0 syz-executor ffs2_balloc(fffffd806dd3c010,3063f,5c,fffffd807f7d3820,1,ffff80002a140258) at ffs2_balloc+0x9fe sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff80002a1402e0) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd805729ede0,ffff80002a140398,3,fffffd807f7d3820) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff8000371e9468,fffffd805729ede0,fffffd807f7d3820,ffff80002a140468,ffff80002a140440) at ktrwriteraw+0x1bc sys/kern/kern_ktrace.c:682 ktrstruct(ffff8000371e9468,ffffffff82ffbe3b,ffff80002a140560,10) at ktrstruct+0x19a sys/kern/kern_ktrace.c:308 sys_nanosleep(ffff8000371e9468,ffff80002a1406a0,ffff80002a1405f0) at sys_nanosleep+0x109 sys/kern/kern_time.c:292 syscall(ffff80002a1406a0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a1406a0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7149f2b365b0, count: 7 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(0xffffffff836190a8, 0xffff8000166c2000, 0, 1) -> d ddb{1}> trace ffs2_balloc(fffffd806dd3c010,3063f,5c,fffffd807f7d3820,1,ffff80002a140258) at ffs2_balloc+0x9fe sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff80002a1402e0) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd805729ede0,ffff80002a140398,3,fffffd807f7d3820) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff8000371e9468,fffffd805729ede0,fffffd807f7d3820,ffff80002a140468,ffff80002a140440) at ktrwriteraw+0x1bc sys/kern/kern_ktrace.c:682 ktrstruct(ffff8000371e9468,ffffffff82ffbe3b,ffff80002a140560,10) at ktrstruct+0x19a sys/kern/kern_ktrace.c:308 sys_nanosleep(ffff8000371e9468,ffff80002a1406a0,ffff80002a1405f0) at sys_nanosleep+0x109 sys/kern/kern_time.c:292 syscall(ffff80002a1406a0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a1406a0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7149f2b365b0, count: -8 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002a140200 rbx 0 rdx 0 rcx 0xffff8000166c2000 rax 0 r8 0xffffffffffffffff r9 0xffff80002a140258 r10 0x845dc5f13490cdda r11 0xa7adcbfb798f5174 r12 0x10 r13 0x1 r14 0xffffffff r15 0xfffffd807016d690 rip 0xffffffff8290659e ffs2_balloc+0x9fe cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff80002a140090 ss 0x10 ffs2_balloc+0x9fe: movq 0(%rcx,%rax,8),%r14 ddb{1}> show proc PROC (syz-executor) tid=246391 pid=28662 tcnt=1 stat=onproc flags process=2 proc=1 runpri=32, usrpri=84, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000371e8028,0xffff8000371e82c0 process=0xffff8000371ced70 user=0xffff80002a13b000, vmspace=0xfffffd807ec78528 estcpu=34, cpticks=1, pctcpu=0.3, user=0, sys=13, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 97874 290235 67 0 2 0 syz-executor 97874 3105 67 0 2 0x4000000 syz-executor 50109 99573 37419 0 2 0 syz-executor 44917 403354 68791 0 2 0 syz-executor 44917 153440 68791 0 2 0x4000000 syz-executor 88534 178094 81826 0 2 0 syz-executor 88534 37017 81826 0 3 0x4000080 fsleep syz-executor 88534 263250 81826 0 3 0x4000080 fsleep syz-executor 36378 467867 0 0 3 0x14200 acct acct 19928 190975 58493 0 2 0 syz-executor 19928 263127 58493 0 2 0x4000000 syz-executor 39450 174418 62890 0 2 0 syz-executor 39450 349375 62890 0 2 0x4000000 syz-executor 78465 399700 28662 0 2 0 syz-executor 78465 45622 28662 0 2 0x4000000 syz-executor 78465 169194 28662 0 3 0x4000080 fsleep syz-executor 78465 101305 28662 0 3 0x4000080 fsleep syz-executor *28662 246391 35071 0 7 0x3 syz-executor 68791 210489 35071 0 7 0x2 syz-executor 81826 87565 35071 0 3 0x82 nanoslp syz-executor 37419 151395 35071 0 3 0x82 nanoslp syz-executor 67 118433 35071 0 3 0x82 nanoslp syz-executor 76746 195152 35071 0 2 0x2 syz-executor 62890 29883 35071 0 3 0x82 nanoslp syz-executor 58493 458066 35071 0 2 0x2 syz-executor 40636 397208 0 0 3 0x14200 bored sosplice 35071 280828 51840 0 3 0x82 kqread syz-executor 51840 200350 27663 0 3 0x10008a sigsusp ksh 27663 130054 90647 0 3 0x98 kqread sshd-session 90647 392199 61182 0 3 0x92 kqread sshd-session 67721 114661 1 0 3 0x100083 ttyin getty 61182 219918 1 0 3 0x88 kqread sshd 57975 322500 74365 74 3 0x1100092 bpf pflogd 74365 5872 1 0 3 0x80 sbwait pflogd 8455 343810 82173 73 3 0x1100090 kqread syslogd 82173 485627 1 0 3 0x100082 sbwait syslogd 58094 266647 1 0 3 0x100080 kqread resolvd 79283 332807 67928 77 3 0x100092 kqread dhcpleased 79717 310312 67928 77 3 0x100092 kqread dhcpleased 67928 323121 1 0 3 0x80 kqread dhcpleased 49959 408519 0 0 3 0x14200 bored smr 21310 500310 0 0 2 0x14200 zerothread 95582 112872 0 0 3 0x14200 aiodoned aiodoned 38655 18411 0 0 3 0x14200 syncer update 52637 299380 0 0 3 0x14200 cleaner cleaner 60332 95585 0 0 3 0x14200 reaper reaper 16988 363796 0 0 3 0x14200 pgdaemon pagedaemon 90628 370760 0 0 3 0x14200 bored viomb 11521 401214 0 0 3 0x40014200 acpi0 acpi0 83383 374630 0 0 3 0x40014200 idle1 43479 443823 0 0 3 0x14200 bored softnet3 98675 136405 0 0 3 0x14200 bored softnet2 2662 18628 0 0 3 0x14200 bored softnet1 11215 144140 0 0 3 0x14200 bored softnet0 83479 470043 0 0 3 0x14200 bored systqmp 80366 465226 0 0 3 0x14200 bored systq 47292 99526 0 0 3 0x14200 tmoslp softclockmp 81961 300996 0 0 3 0x40014200 tmoslp softclock 23930 215711 0 0 3 0x40014200 idle0 1 387712 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 44917 (syz-executor) thread 0xffff8000371e91e0 (153440) exclusive rwlock vmmaplk r = 0 (0xfffffd807100f100) #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 vm_map_lock_ln+0x143 sys/uvm/uvm_map.c:5252 #3 uvm_map_inherit+0xb8 sys/uvm/uvm_map.c:4104 #4 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #4 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #5 Xsyscall+0x128 Process 39450 (syz-executor) thread 0xffff800029fe67c8 (349375) exclusive rwlock fdlock r = 0 (0xfffffd806a011440) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 ptmioctl+0x130 #2 VOP_IOCTL+0xac sys/kern/vfs_vops.c:264 #3 vn_ioctl+0xf6 sys/kern/vfs_vnops.c:525 #4 sys_ioctl+0x67c #5 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #5 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #6 Xsyscall+0x128 Process 28662 (syz-executor) thread 0xffff8000371e9468 (246391) exclusive rrwlock inode r = 0 (0xfffffd806dd3c0a8) #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 ktrstruct+0x19a sys/kern/kern_ktrace.c:308 #8 sys_nanosleep+0x109 sys/kern/kern_time.c:292 #9 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #9 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #10 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8362f4e0) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 ktrstruct+0xe2 sys/kern/kern_ktrace.c:307 #2 sys_nanosleep+0x109 sys/kern/kern_time.c:292 #3 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #3 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #4 Xsyscall+0x128 Process 76746 (syz-executor) thread 0xffff8000371e8a48 (195152) exclusive rrwlock inode r = 0 (0xfffffd807d8c32c0) #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 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:169 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1230 #6 ffs_inode_alloc+0x283 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0x113 sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x102 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3099 #10 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #10 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806b8e94d8) #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 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3084 #8 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #8 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10235 10173K 10561K 166960K 12957 0 pcb 19 14K 16K 166960K 355 0 rtable 226 6K 7K 166960K 1435 0 pf 38 18K 21K 166960K 163 0 ifaddr 46 8K 8K 166960K 202 0 ifgroup 60 2K 2K 166960K 234 0 sysctl 3 0K 0K 166960K 7 0 counters 66 36K 37K 166960K 160 0 ioctlops 0 0K 4K 166960K 1571 0 iov 0 0K 24K 166960K 117 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1411 89K 89K 166960K 2556 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 19 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 32 0 dirhash 12 2K 2K 166960K 30 0 ACPI 1690 195K 286K 166960K 12418 0 file desc 17 61K 97K 166960K 1679 0 sigio 0 0K 0K 166960K 22 0 proc 72 91K 128K 166960K 1503 0 subproc 104 6K 7K 166960K 521 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 150 0 in_multi 99 7K 7K 166960K 487 0 ether_multi 1 0K 0K 166960K 7 0 mrt 1 0K 0K 166960K 5 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 235 1049K 1049K 166960K 235 0 exec 0 0K 1K 166960K 968 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 234 76K 113K 166960K 15791 0 UVM aobj 34 2K 4K 166960K 39 0 pinsyscall 42 84K 108K 166960K 3592 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 76 0 NDP 13 0K 2K 166960K 143 0 temp 77 6823K 6946K 166960K 53594 0 kqueue 14 22K 32K 166960K 214 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 24 0 0 1 0 1 1 0 8 0 rtpcb 120 235 0 232 3 2 1 3 0 8 0 rtentry 112 504 0 400 4 1 3 4 0 8 0 unpcb 144 772 0 755 3 2 1 2 0 8 0 syncache 336 11 0 11 5 4 1 1 0 8 1 tcpqe 32 6 0 6 3 2 1 1 0 8 1 tcpcb 808 526 0 517 19 17 2 8 0 8 0 arp 120 89 0 69 1 0 1 1 0 8 0 inpcb 336 1729 0 1712 31 23 8 12 0 8 6 nd6 136 127 0 103 1 0 1 1 0 8 0 pkpcb 40 7 0 7 4 4 0 1 0 8 0 kcovpl 48 40 0 32 1 0 1 1 0 8 0 ppxss 1168 8 0 8 5 5 0 1 0 8 0 pffrag 232 12 0 5 1 0 1 1 0 482 0 pffrnode 88 9 0 4 1 0 1 1 0 8 0 pffrent 40 103 0 96 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 2 0 1 1 0 1 1 0 8 0 pftag 88 2 0 0 1 0 1 1 0 8 0 pfstitem 24 139 0 86 1 0 1 1 0 8 0 pfstkey 128 139 0 86 2 0 2 2 0 8 0 pfstate 376 139 0 86 7 1 6 6 0 8 0 pfrule 1344 27 0 21 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 2022 0 1574 39 11 28 29 0 8 0 art_table 32 2024 0 1574 4 0 4 4 0 8 0 art_node 16 499 0 407 1 0 1 1 0 8 0 sysvmsgpl 40 42 0 2 1 0 1 1 0 8 0 semapl 112 29 0 19 1 0 1 1 0 8 0 shmpl 112 36 0 5 1 0 1 1 0 8 0 dirhash 1024 29 0 12 3 0 3 3 0 8 0 dino2pl 256 3542 0 1976 99 0 99 99 0 8 0 ffsino 272 3542 0 1976 106 1 105 105 0 8 0 nchpl 144 5364 0 3627 65 0 65 65 0 8 0 uvmvnodes 80 4490 0 0 92 0 92 92 0 8 0 vnodes 216 4490 0 0 250 0 250 250 0 8 0 namei 1024 21273 0 21272 8 7 1 2 0 8 0 percpumem 16 94 0 47 1 0 1 1 0 8 0 kstatmem 264 120 0 94 3 0 3 3 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 5 0 5 3 3 0 1 0 8 0 scxspl 216 34280 0 34280 11 10 1 8 1 8 1 plimitpl 152 314 0 296 1 0 1 1 0 8 0 sigapl 424 1918 0 1867 9 2 7 7 0 8 0 futexpl 64 17085 0 17081 5 4 1 1 0 8 0 knotepl 120 614 0 0 19 0 19 19 0 8 0 kqueuepl 216 421 0 410 7 6 1 5 0 8 0 pipepl 320 456 0 427 13 10 3 8 0 8 0 fdescpl 496 1898 0 1867 8 3 5 6 0 8 0 filepl 152 10892 0 10634 40 27 13 18 0 8 3 lockfpl 104 506 0 501 1 0 1 1 0 8 0 lockfspl 48 193 0 188 1 0 1 1 0 8 0 sessionpl 144 55 0 46 1 0 1 1 0 8 0 pgrppl 48 108 0 91 1 0 1 1 0 8 0 ucredpl 104 1552 0 1539 1 0 1 1 0 8 0 zombiepl 144 2370 0 2370 2 1 1 1 0 8 1 processpl 1160 1918 0 1867 6 2 4 5 0 8 0 procpl 648 3900 0 3840 9 3 6 7 0 8 0 srpgc 96 10 0 10 5 5 0 1 0 8 0 sosppl 168 10 0 10 4 3 1 1 0 8 1 sockpl 664 3083 0 3047 34 25 9 14 0 8 5 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 220 0 0 28 0 28 28 0 8 0 mtagpl 96 44 0 0 2 0 2 2 0 8 0 mbufpl 256 514 0 0 27 0 27 27 0 8 0 bufpl 280 11211 0 4152 505 0 505 505 0 8 0 anonpl 24 313908 0 310466 124 81 43 80 0 185 5 amapchunkpl 152 51103 0 50616 71 43 28 43 0 158 5 amappl16 200 6408 0 6382 43 41 2 15 0 8 0 amappl15 192 24 0 24 1 1 0 1 0 8 0 amappl14 184 188 0 176 1 0 1 1 0 8 0 amappl13 176 76 0 76 1 1 0 1 0 8 0 amappl12 168 3048 0 3017 4 2 2 3 0 8 0 amappl11 160 65 0 51 1 0 1 1 0 8 0 amappl10 152 8 0 8 2 2 0 1 0 8 0 amappl9 144 142 0 142 1 1 0 1 0 8 0 amappl8 136 23 0 21 1 0 1 1 0 8 0 amappl7 128 176 0 164 1 0 1 1 0 8 0 amappl6 120 492 0 490 1 0 1 1 0 8 0 amappl5 112 271 0 259 1 0 1 1 0 8 0 amappl4 104 420 0 399 1 0 1 1 0 8 0 amappl3 96 10231 0 10121 5 1 4 4 0 8 0 amappl2 88 1142 0 1073 2 0 2 2 0 8 0 amappl1 80 14306 0 13749 14 0 14 14 0 8 0 amappl 88 15069 0 14898 5 0 5 5 0 92 0 dma16384 16384 1 0 1 1 1 0 1 0 8 0 dma4096 4096 3 0 3 2 2 0 1 0 8 0 dma2048 2048 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 38 0 5 1 0 1 1 0 8 0 uaddrrnd 24 1898 0 1867 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1898 0 1867 1 0 1 1 0 8 0 vmmpekpl 168 16590 0 16540 3 0 3 3 0 8 0 vmmpepl 168 121525 0 119674 116 31 85 95 0 357 0 vmsppl 440 1897 0 1867 7 3 4 5 0 8 0 rwobjpl 56 40111 0 34664 79 1 78 78 0 8 0 pdppl 4096 3803 0 3734 149 78 71 87 0 8 2 pvpl 32 46362 0 0 376 2 374 375 0 265 0 pmappl 248 1897 0 1867 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 532 0 152 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83466ff0) 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(ffffffff8362f2d8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8362f2d8) at __mp_lock+0x192 sys/kern/kern_lock.c:144 softintr_dispatch(0) at softintr_dispatch+0x5b sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x27 __mp_lock(ffffffff8362f2d8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8362f2d8) at __mp_lock+0x192 sys/kern/kern_lock.c:144 syscall(ffff80002a0d8c70) at syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a0d8c70) at syscall+0xad6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7584a11fe950, count: 6 ddb{0}> trace x86_ipi_db(ffffffff83466ff0) 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(ffffffff8362f2d8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8362f2d8) at __mp_lock+0x192 sys/kern/kern_lock.c:144 softintr_dispatch(0) at softintr_dispatch+0x5b sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x27 __mp_lock(ffffffff8362f2d8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8362f2d8) at __mp_lock+0x192 sys/kern/kern_lock.c:144 syscall(ffff80002a0d8c70) at syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a0d8c70) at syscall+0xad6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7584a11fe950, count: -9 ddb{0}> machine ddbcpu 1 Stopped at ffs2_balloc+0x9fe: movq 0(%rcx,%rax,8),%r14 ffs2_balloc(fffffd806dd3c010,3063f,5c,fffffd807f7d3820,1,ffff80002a140258) at ffs2_balloc+0x9fe sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff80002a1402e0) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd805729ede0,ffff80002a140398,3,fffffd807f7d3820) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff8000371e9468,fffffd805729ede0,fffffd807f7d3820,ffff80002a140468,ffff80002a140440) at ktrwriteraw+0x1bc sys/kern/kern_ktrace.c:682 ktrstruct(ffff8000371e9468,ffffffff82ffbe3b,ffff80002a140560,10) at ktrstruct+0x19a sys/kern/kern_ktrace.c:308 sys_nanosleep(ffff8000371e9468,ffff80002a1406a0,ffff80002a1405f0) at sys_nanosleep+0x109 sys/kern/kern_time.c:292 syscall(ffff80002a1406a0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a1406a0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7149f2b365b0, count: 7 ddb{1}> trace ffs2_balloc(fffffd806dd3c010,3063f,5c,fffffd807f7d3820,1,ffff80002a140258) at ffs2_balloc+0x9fe sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff80002a1402e0) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd805729ede0,ffff80002a140398,3,fffffd807f7d3820) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff8000371e9468,fffffd805729ede0,fffffd807f7d3820,ffff80002a140468,ffff80002a140440) at ktrwriteraw+0x1bc sys/kern/kern_ktrace.c:682 ktrstruct(ffff8000371e9468,ffffffff82ffbe3b,ffff80002a140560,10) at ktrstruct+0x19a sys/kern/kern_ktrace.c:308 sys_nanosleep(ffff8000371e9468,ffff80002a1406a0,ffff80002a1405f0) at sys_nanosleep+0x109 sys/kern/kern_time.c:292 syscall(ffff80002a1406a0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a1406a0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7149f2b365b0, count: -8