uvm_fault(0xffffffff838fce98, 0xffff800028ba2004, 0, 1) -> d kernel: page fault trap, code=0 Stopped at ffs_alloccg+0x16e: movl 0x4(%r14),%r15d TID PID UID PRFLAGS PFLAGS CPU COMMAND * 35526 28448 0 0 0x4000000 0 syz-executor 485004 50072 0 0 0x4000000 1K syz-executor ffs_alloccg(fffffd806e9d6190,4,660e5,4000) at ffs_alloccg+0x16e ffs_cgread sys/ufs/ffs/ffs_alloc.c:856 [inline] ffs_alloccg(fffffd806e9d6190,4,660e5,4000) at ffs_alloccg+0x16e sys/ufs/ffs/ffs_alloc.c:948 ffs_alloc(fffffd806e9d6190,0,660e5,4000,fffffd80097fb4e0,ffff80003c48b8e8) at ffs_alloc+0x314 ffs_hashalloc sys/ufs/ffs/ffs_alloc.c:-1 [inline] ffs_alloc(fffffd806e9d6190,0,660e5,4000,fffffd80097fb4e0,ffff80003c48b8e8) at ffs_alloc+0x314 sys/ufs/ffs/ffs_alloc.c:140 ffs2_balloc(fffffd806e9d6190,0,4000,fffffd80097fb4e0,2,ffff80003c48b9e8) at ffs2_balloc+0x7d3 sys/ufs/ffs/ffs_balloc.c:533 ffs_write(ffff80003c48ba70) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd80683c2e98,ffff80003c48bc28,7,fffffd80097fb4e0) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 vn_write(fffffd806b23ba48,ffff80003c48bc28,0) at vn_write+0x1d3 sys/kern/vfs_vnops.c:408 dofilewritev(ffff800039c00d28,3,ffff80003c48bc28,0,ffff80003c48bce0) at dofilewritev+0x242 sys/kern/sys_generic.c:380 sys_write(ffff800039c00d28,ffff80003c48bd90,ffff80003c48bce0) at sys_write+0xa2 sys/kern/sys_generic.c:300 syscall(ffff80003c48bd90) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c48bd90) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3616f9a8210, count: 5 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: uvm_fault(0xffffffff838fce98, 0xffff800028ba2004, 0, 1) -> d ddb{0}> trace ffs_alloccg(fffffd806e9d6190,4,660e5,4000) at ffs_alloccg+0x16e ffs_cgread sys/ufs/ffs/ffs_alloc.c:856 [inline] ffs_alloccg(fffffd806e9d6190,4,660e5,4000) at ffs_alloccg+0x16e sys/ufs/ffs/ffs_alloc.c:948 ffs_alloc(fffffd806e9d6190,0,660e5,4000,fffffd80097fb4e0,ffff80003c48b8e8) at ffs_alloc+0x314 ffs_hashalloc sys/ufs/ffs/ffs_alloc.c:-1 [inline] ffs_alloc(fffffd806e9d6190,0,660e5,4000,fffffd80097fb4e0,ffff80003c48b8e8) at ffs_alloc+0x314 sys/ufs/ffs/ffs_alloc.c:140 ffs2_balloc(fffffd806e9d6190,0,4000,fffffd80097fb4e0,2,ffff80003c48b9e8) at ffs2_balloc+0x7d3 sys/ufs/ffs/ffs_balloc.c:533 ffs_write(ffff80003c48ba70) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd80683c2e98,ffff80003c48bc28,7,fffffd80097fb4e0) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 vn_write(fffffd806b23ba48,ffff80003c48bc28,0) at vn_write+0x1d3 sys/kern/vfs_vnops.c:408 dofilewritev(ffff800039c00d28,3,ffff80003c48bc28,0,ffff80003c48bce0) at dofilewritev+0x242 sys/kern/sys_generic.c:380 sys_write(ffff800039c00d28,ffff80003c48bd90,ffff80003c48bce0) at sys_write+0xa2 sys/kern/sys_generic.c:300 syscall(ffff80003c48bd90) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c48bd90) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3616f9a8210, count: -10 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80003c48b750 rbx 0xfffffd806e9d6190 rdx 0xffff80000144f980 rcx 0xffff800039c00d28 rax 0xffffffff83799ff0 cpu_info_full_primary+0x1ff0 r8 0xffffffffffffffff r9 0xffff80003c48b8e8 r10 0 r11 0xc5dd772e27053908 r12 0x4000 __ALIGN_SIZE+0x3000 r13 0xfffffd805ce4d6c0 r14 0xffff800028ba2000 r15 0 rip 0xffffffff8132fb9e ffs_alloccg+0x16e cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c48b6a0 ss 0x10 ffs_alloccg+0x16e: movl 0x4(%r14),%r15d ddb{0}> show proc PROC (syz-executor) tid=35526 pid=28448 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800039c00560,0xffffffff838fabc8 process=0xffff80002a3cc9b8 user=0xffff80003c486000, vmspace=0xfffffd805cacaba0 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 28448 194531 77318 0 2 0 syz-executor *28448 35526 77318 0 7 0x4000000 syz-executor 72081 102032 38031 60929 3 0x90 nanoslp syz-executor 72081 81502 38031 60929 3 0x4000090 sysctllk syz-executor 38109 494935 68211 0 3 0x82 sysctllk syz-executor 29609 212927 68211 0 3 0x82 sysctllk syz-executor 611 44843 68211 0 3 0x82 sysctllk syz-executor 31895 181145 68211 0 3 0x82 sysctllk syz-executor 59631 107635 68211 0 3 0x82 sysctllk syz-executor 84339 416019 8733 0 3 0x82 sysctllk sshd-session 50072 6077 1 0 3 0 vmmapbsy syz-executor 50072 510087 1 0 3 0x4000000 vmmapbsy syz-executor 50072 485004 1 0 7 0x4000000 syz-executor 50072 427171 1 0 3 0x4000000 vmmapbsy syz-executor 56858 325351 0 0 3 0x14200 bored sosplice 77318 1990 68211 0 2 0xc82 syz-executor 38031 14834 68211 0 3 0x82 nanoslp syz-executor 95165 80183 68211 0 3 0x82 nanoslp syz-executor 68211 481005 89855 0 3 0x82 kqread syz-executor 89855 404782 57485 0 3 0x10008a sigsusp ksh 57485 490102 24787 0 3 0x98 kqread sshd-session 24787 59213 8733 0 3 0x92 kqread sshd-session 12941 395266 1 0 3 0x100083 ttyin getty 8733 252381 1 0 3 0x88 kqread sshd 54402 141303 15455 74 3 0x1100092 bpf pflogd 15455 170959 1 0 3 0x80 sbwait pflogd 15367 277784 48530 73 3 0x1100090 kqread syslogd 48530 142987 1 0 3 0x100082 sbwait syslogd 18580 19371 1 0 3 0x100080 kqread resolvd 79113 280669 84745 77 3 0x100092 sysctllk dhcpleased 69893 57445 84745 77 3 0x100092 kqread dhcpleased 84745 51192 1 0 3 0x80 kqread dhcpleased 27052 34473 0 0 3 0x14200 bored smr 16427 290297 0 0 3 0x14200 pgzero zerothread 52790 182723 0 0 3 0x14200 aiodoned aiodoned 40090 449815 0 0 3 0x14200 syncer update 25792 371078 0 0 3 0x14200 cleaner cleaner 13074 513827 0 0 3 0x14200 reaper reaper 86852 178444 0 0 3 0x14200 pgdaemon pagedaemon 50114 150249 0 0 3 0x14200 bored viomb 8443 25961 0 0 3 0x40014200 acpi0 acpi0 86632 222838 0 0 3 0x40014200 idle1 88366 68414 0 0 3 0x14200 bored softnet1 34545 91328 0 0 3 0x14200 bored softnet0 89481 85565 0 0 3 0x14200 bored systqmp 49236 104007 0 0 3 0x14200 bored systq 13518 443319 0 0 3 0x14200 tmoslp softclockmp 7383 142267 0 0 3 0x40014200 tmoslp softclock 72299 381956 0 0 3 0x40014200 idle0 1 106698 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 28448 (syz-executor) thread 0xffff800039c00d28 (35526) exclusive rrwlock inode r = 0 (0xfffffd806e9d6230) #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+0xa3 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vn_write+0x18f sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x242 sys/kern/sys_generic.c:380 #7 sys_write+0xa2 sys/kern/sys_generic.c:300 #8 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 #9 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff838f9630) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 vn_write+0x4e sys/kern/vfs_vnops.c:393 #2 dofilewritev+0x242 sys/kern/sys_generic.c:380 #3 sys_write+0xa2 sys/kern/sys_generic.c:300 #4 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #4 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 #5 Xsyscall+0x128 Process 50072 (syz-executor) thread 0xffff80003bc09778 (510087) exclusive rrwlock inode r = 0 (0xfffffd806e32fdd0) #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+0xa3 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vn_write+0x18f sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x242 sys/kern/sys_generic.c:380 #7 sys_write+0xa2 sys/kern/sys_generic.c:300 #8 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 #9 Xsyscall+0x128 Process 50072 (syz-executor) thread 0xffff80003bc08550 (485004) exclusive rwlock sysctllk r = 0 (0xffffffff837d3698) #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 sysctl_vslock+0x45 sys/kern/kern_sysctl.c:191 #3 kern_sysctl_dirs+0x243 sys/kern/kern_sysctl.c:440 #4 kern_sysctl+0x139 sys/kern/kern_sysctl.c:733 #5 sys_sysctl+0x3e5 sys/kern/kern_sysctl.c:-1 #6 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10226 11102K 11498K 166960K 13379 0 pcb 17 12K 12K 166960K 235 0 rtable 146 7K 7K 166960K 460 0 pf 31 17K 82K 166960K 159 0 ifaddr 26 4K 8K 166960K 99 0 ifgroup 39 1K 2K 166960K 175 0 sysctl 1 1K 9K 166960K 11 0 counters 60 35K 37K 166960K 192 0 ioctlops 0 0K 4K 166960K 1757 0 iov 0 0K 16K 166960K 120 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1424 90K 90K 166960K 2842 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 9K 166960K 23 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 132 0 dirhash 12 2K 2K 166960K 27 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 14 34K 350K 166960K 1538 0 sigio 0 0K 0K 166960K 38 0 proc 72 115K 164K 166960K 706 0 subproc 36 2K 4K 166960K 73 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 185 0 in_multi 51 3K 7K 166960K 150 0 ether_multi 1 0K 0K 166960K 13 0 mrt 1 0K 0K 166960K 10 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 259 1155K 1155K 166960K 259 0 exec 0 0K 1K 166960K 624 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 204 128K 174K 166960K 16593 0 UVM aobj 35 2K 2K 166960K 42 0 pinsyscall 41 82K 110K 166960K 2617 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 82 0 NDP 8 0K 2K 166960K 73 0 temp 63 8651K 8776K 166960K 75959 0 kqueue 13 20K 29K 166960K 325 0 SYN cache 2 8K 16K 166960K 3 0 ddb{0}> 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 120 176 0 173 2 1 1 2 0 8 0 rtentry 176 119 0 65 5 0 5 5 0 8 0 unpcb 144 1140 0 1121 12 6 6 6 0 8 5 syncache 336 5 0 5 3 3 0 1 0 8 0 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpcb 736 541 0 535 19 18 1 7 0 8 0 arp 136 12 0 4 1 0 1 1 0 8 0 inpcb 328 1493 0 1483 24 17 7 7 0 8 5 nd6 144 21 0 11 1 0 1 1 0 8 0 pkpcb 40 16 0 16 3 2 1 1 0 8 1 kcovpl 48 8 0 4 1 0 1 1 0 8 0 ppxss 1192 52 0 52 4 3 1 1 0 8 1 pppxif 1504 5 0 5 4 4 0 1 0 8 0 pfstscr 40 6 0 5 5 4 1 1 0 8 0 pffrag 232 15 0 5 1 0 1 1 0 482 0 pffrnode 88 13 0 4 1 0 1 1 0 8 0 pffrent 40 39 0 29 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 pftag 88 2 0 1 2 1 1 1 0 8 0 pfstitem 24 96 0 63 1 0 1 1 0 8 0 pfstkey 128 104 0 71 2 0 2 2 0 8 0 pfstate 384 100 0 69 6 0 6 6 0 8 0 pfrule 1344 27 0 21 2 1 1 2 0 8 0 rttmr 136 2 0 2 2 1 1 1 0 8 1 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 616 0 379 28 9 19 28 0 8 0 art_table 40 620 0 379 5 0 5 5 0 8 0 art_node 32 118 0 72 1 0 1 1 0 8 0 sysvmsgpl 40 51 0 13 1 0 1 1 0 8 0 semapl 112 125 0 115 1 0 1 1 0 8 0 shmpl 112 39 0 7 1 0 1 1 0 8 0 dirhash 1024 27 0 10 3 0 3 3 0 8 0 dino2pl 256 4525 0 3021 96 1 95 96 0 8 0 ffsino 296 4525 0 3021 117 0 117 117 0 8 0 nchpl 144 6641 0 4943 64 0 64 64 0 8 0 rtmask 32 5 0 5 3 3 0 1 0 8 0 uvmvnodes 80 5296 0 0 109 0 109 109 0 8 0 vnodes 216 5296 0 0 295 0 295 295 0 8 0 namei 1024 23327 0 23327 5 4 1 3 0 8 1 percpumem 16 111 0 66 1 0 1 1 0 8 0 kstatmem 264 116 0 98 4 2 2 3 0 8 0 scsiplug 72 12 0 12 6 5 1 1 0 8 1 scxspl 216 35247 0 35247 12 11 1 8 1 8 1 plimitpl 152 358 0 340 1 0 1 1 0 8 0 sigapl 424 1814 0 1768 7 1 6 7 0 8 0 knotepl 120 552 0 0 16 0 16 16 0 8 0 kqueuepl 224 788 0 778 11 10 1 5 0 8 0 pipepl 344 263 0 235 3 0 3 3 0 8 0 fdescpl 528 1790 0 1761 3 0 3 3 0 8 0 filepl 160 12780 0 12598 27 13 14 15 0 8 3 lockfpl 104 770 0 768 2 1 1 2 0 8 0 lockfspl 48 277 0 275 1 0 1 1 0 8 0 sessionpl 144 24 0 14 1 0 1 1 0 8 0 pgrppl 48 59 0 40 1 0 1 1 0 8 0 ucredpl 104 2599 0 2585 1 0 1 1 0 8 0 zombiepl 144 2728 0 2727 1 0 1 1 0 8 0 processpl 1232 1814 0 1768 5 1 4 5 0 8 0 procpl 664 4577 0 4526 7 0 7 7 0 8 0 sosppl 168 9 0 9 5 4 1 1 0 8 1 sockpl 752 2926 0 2894 34 22 12 17 0 8 8 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl12k 12288 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 7 0 0 1 0 1 1 0 8 0 mcl4k 4096 120 0 0 15 0 15 15 0 8 0 mcl2k 2048 58 0 0 6 0 6 6 0 8 0 mtagpl 96 10 0 0 1 0 1 1 0 8 0 mbufpl 256 1228 0 0 77 0 77 77 0 8 0 bufpl 280 14809 0 8666 440 0 440 440 0 8 0 anonpl 32 11980 0 0 98 1 97 97 0 246 0 amapchunkpl 152 57863 0 57507 57 30 27 32 0 158 9 amappl16 200 5677 0 5649 75 61 14 28 0 8 8 amappl15 192 8 0 8 1 1 0 1 0 8 0 amappl14 184 117 0 104 1 0 1 1 0 8 0 amappl13 176 3 0 3 1 1 0 1 0 8 0 amappl12 168 2437 0 2414 3 1 2 2 0 8 0 amappl11 160 54 0 40 1 0 1 1 0 8 0 amappl10 152 4 0 3 1 0 1 1 0 8 0 amappl9 144 258 0 258 1 1 0 1 0 8 0 amappl8 136 20 0 18 1 0 1 1 0 8 0 amappl7 128 125 0 111 1 0 1 1 0 8 0 amappl6 120 181 0 176 1 0 1 1 0 8 0 amappl5 112 121 0 110 1 0 1 1 0 8 0 amappl4 104 296 0 275 1 0 1 1 0 8 0 amappl3 96 9855 0 9786 4 0 4 4 0 8 0 amappl2 88 2043 0 1962 2 0 2 2 0 8 0 amappl1 80 14107 0 13486 18 4 14 16 0 8 0 amappl 88 15760 0 15633 5 0 5 5 0 92 0 dma65536 65536 1 0 1 1 1 0 1 0 8 0 dma4096 4096 1 0 1 1 1 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 128 259 0 259 5 5 0 1 0 8 0 dma64 64 9 0 9 3 3 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 41 0 7 1 0 1 1 0 8 0 uaddrrnd 24 1790 0 1761 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1790 0 1761 1 0 1 1 0 8 0 vmmpekpl 168 15375 0 15317 4 1 3 4 0 8 0 vmmpepl 168 117571 0 115795 130 32 98 114 0 357 6 vmsppl 488 1789 0 1761 7 2 5 5 0 8 0 rwobjpl 80 37721 0 31475 137 2 135 135 0 8 3 pdppl 4096 3588 0 3522 108 42 66 88 0 8 0 pvpl 32 19254 0 0 156 1 155 155 0 265 0 pmappl 256 1789 0 1761 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 375 0 82 9 0 9 9 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace ffs_alloccg(fffffd806e9d6190,4,660e5,4000) at ffs_alloccg+0x16e ffs_cgread sys/ufs/ffs/ffs_alloc.c:856 [inline] ffs_alloccg(fffffd806e9d6190,4,660e5,4000) at ffs_alloccg+0x16e sys/ufs/ffs/ffs_alloc.c:948 ffs_alloc(fffffd806e9d6190,0,660e5,4000,fffffd80097fb4e0,ffff80003c48b8e8) at ffs_alloc+0x314 ffs_hashalloc sys/ufs/ffs/ffs_alloc.c:-1 [inline] ffs_alloc(fffffd806e9d6190,0,660e5,4000,fffffd80097fb4e0,ffff80003c48b8e8) at ffs_alloc+0x314 sys/ufs/ffs/ffs_alloc.c:140 ffs2_balloc(fffffd806e9d6190,0,4000,fffffd80097fb4e0,2,ffff80003c48b9e8) at ffs2_balloc+0x7d3 sys/ufs/ffs/ffs_balloc.c:533 ffs_write(ffff80003c48ba70) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd80683c2e98,ffff80003c48bc28,7,fffffd80097fb4e0) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 vn_write(fffffd806b23ba48,ffff80003c48bc28,0) at vn_write+0x1d3 sys/kern/vfs_vnops.c:408 dofilewritev(ffff800039c00d28,3,ffff80003c48bc28,0,ffff80003c48bce0) at dofilewritev+0x242 sys/kern/sys_generic.c:380 sys_write(ffff800039c00d28,ffff80003c48bd90,ffff80003c48bce0) at sys_write+0xa2 sys/kern/sys_generic.c:300 syscall(ffff80003c48bd90) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c48bd90) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3616f9a8210, count: -10 ddb{0}> machine ddbcpu 1