86uvm_fault(0xffffffff83a9f750, 0xffff800028003698, 0, 1) -> d kernel: page fault trap, code=0 Stopped at ffs2_balloc+0xa0d: movq 0(%rcx,%rax,8),%r14 TID PID UID PRFLAGS PFLAGS CPU COMMAND 510931 73082 0 0 0 0 syz-executor *304985 96913 0 0x1000 0x4080000 1K syz-executor ffs2_balloc(fffffd806c7c0398,b7c000,4000,fffffd80097fd4e0,2,ffff80003c415308) at ffs2_balloc+0xa0d sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff80003c415390) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd805fa08cd0,ffff80003c415548,7,fffffd80097fd4e0) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 vn_write(fffffd80691d04a8,ffff80003c415548,0) at vn_write+0x1d3 sys/kern/vfs_vnops.c:408 dofilewritev(ffff80003c4387f0,4,ffff80003c415548,0,ffff80003c415600) at dofilewritev+0x2bd sys/kern/sys_generic.c:384 sys_write(ffff80003c4387f0,ffff80003c4156b0,ffff80003c415600) at sys_write+0xa2 sys/kern/sys_generic.c:300 syscall(ffff80003c4156b0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4156b0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3ea476b330, 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(0xffffffff83a9f750, 0xffff800028003698, 0, 1) -> d ddb{1}> trace ffs2_balloc(fffffd806c7c0398,b7c000,4000,fffffd80097fd4e0,2,ffff80003c415308) at ffs2_balloc+0xa0d sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff80003c415390) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd805fa08cd0,ffff80003c415548,7,fffffd80097fd4e0) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 vn_write(fffffd80691d04a8,ffff80003c415548,0) at vn_write+0x1d3 sys/kern/vfs_vnops.c:408 dofilewritev(ffff80003c4387f0,4,ffff80003c415548,0,ffff80003c415600) at dofilewritev+0x2bd sys/kern/sys_generic.c:384 sys_write(ffff80003c4387f0,ffff80003c4156b0,ffff80003c415600) at sys_write+0xa2 sys/kern/sys_generic.c:300 syscall(ffff80003c4156b0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4156b0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3ea476b330, count: -8 ddb{1}> show registers rdi 0 rsi 0x2 rbp 0xffff80003c4152b0 rbx 0 rdx 0 rcx 0xffff800028002000 rax 0x2d3 r8 0xffffffffffffffff r9 0xffff80003c415308 r10 0xea220809581b53dc r11 0x3f4f774eb3c0f30d r12 0x1 r13 0xffff800000c31800 r14 0xffff80003c415140 r15 0xfffffd8064c30130 rip 0xffffffff82dabf3d ffs2_balloc+0xa0d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c415130 ss 0 ffs2_balloc+0xa0d: movq 0(%rcx,%rax,8),%r14 ddb{1}> show proc PROC (syz-executor) tid=304985 pid=96913 tcnt=3 stat=onproc flags process=1000 proc=4080000 runpri=17, usrpri=75, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003c3d8fb0 scnt=2 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c3d8fb0,0xffff80003c438038 process=0xffff80002a39d828 user=0xffff80003c410000, vmspace=0xfffffd806b2ec3f0 estcpu=25, cpticks=39, pctcpu=0.27, user=0, sys=39, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 73082 510931 39420 0 7 0 syz-executor 73082 201506 39420 0 2 0x4000000 syz-executor 46831 252180 83372 0 2 0 syz-executor 46831 520894 83372 0 2 0x4000000 syz-executor 39968 294248 15285 0 3 0x80 nanoslp syz-executor 39968 464576 15285 0 2 0x4000c80 syz-executor 10634 284994 87047 -1 3 0x90 nanoslp syz-executor 10634 309522 87047 -1 3 0x4000090 kqsel syz-executor 10634 481635 87047 -1 3 0x4000090 kqsel syz-executor 10634 503695 87047 -1 3 0x4000090 fsleep syz-executor 12026 360959 8811 0 3 0x80 nanoslp syz-executor 12026 393897 8811 0 3 0x4000080 kqread syz-executor 96913 360112 53340 0 3 0x3000 suspend syz-executor *96913 304985 53340 0 7 0x4081000 syz-executor 96913 188573 53340 0 3 0x4081000 fltagain2 syz-executor 24697 464833 51769 0 3 0x100082 sbwait arp 51769 210439 55961 0 3 0x10008a sigsusp sh 20887 368310 74117 0 3 0x82 wait syz-executor 8811 48780 74117 0 3 0x82 nanoslp syz-executor 83372 241045 74117 0 2 0xc82 syz-executor 15285 138509 74117 0 3 0x82 nanoslp syz-executor 87047 216603 74117 0 3 0x82 nanoslp syz-executor 55961 417468 74117 0 3 0x82 wait syz-executor 39420 247910 74117 0 2 0xc82 syz-executor 53340 478703 74117 0 3 0x82 nanoslp syz-executor 74117 447032 85782 0 3 0x82 kqread syz-executor 85782 430381 23749 0 3 0x10008a sigsusp ksh 23749 513553 25931 0 3 0x98 kqread sshd-session 25931 372199 26614 0 3 0x92 kqread sshd-session 10569 281863 1 0 3 0x100083 ttyopn getty 26614 56201 1 0 3 0x88 kqread sshd 12688 17184 75637 74 3 0x1100092 bpf pflogd 75637 1106 1 0 3 0x80 sbwait pflogd 5660 299031 14813 73 3 0x1100090 kqread syslogd 14813 43858 1 0 3 0x100082 sbwait syslogd 77753 355693 1 0 3 0x100080 kqread resolvd 30286 284180 80260 77 3 0x100092 kqread dhcpleased 76644 319942 80260 77 3 0x100092 kqread dhcpleased 80260 53953 1 0 3 0x80 kqread dhcpleased 36699 22302 0 0 3 0x14200 bored smr 72177 237357 0 0 3 0x14200 pgzero zerothread 56506 261770 0 0 3 0x14200 aiodoned aiodoned 27091 162490 0 0 3 0x14200 syncer update 6295 436051 0 0 3 0x14200 cleaner cleaner 26118 183666 0 0 3 0x14200 reaper reaper 77329 397443 0 0 3 0x14200 pgdaemon pagedaemon 39537 26975 0 0 3 0x14200 bored viomb 48304 395991 0 0 3 0x40014200 acpi0 acpi0 21467 287589 0 0 3 0x40014200 idle1 43429 487717 0 0 3 0x14200 bored softnet1 86476 449142 0 0 3 0x14200 bored softnet0 9098 237338 0 0 3 0x14200 bored systqmp 43922 185353 0 0 3 0x14200 bored systq 52656 439582 0 0 3 0x14200 tmoslp softclockmp 54569 280119 0 0 3 0x40014200 tmoslp softclock 28774 226527 0 0 3 0x40014200 idle0 1 449618 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 96913 (syz-executor) thread 0xffff80003c4387f0 (304985) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83994bc0) #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 biowait+0xc6 sys/kern/vfs_bio.c:1242 #4 bwrite+0x2e7 sys/kern/vfs_bio.c:754 #5 ffs2_balloc+0x18b4 sys/ufs/ffs/ffs_balloc.c:701 #6 ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 #7 VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 #8 vn_write+0x1d3 sys/kern/vfs_vnops.c:408 #9 dofilewritev+0x2bd sys/kern/sys_generic.c:384 #10 sys_write+0xa2 sys/kern/sys_generic.c:300 #11 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #11 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 #12 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806c7c0438) #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 vn_write+0x18f sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x2bd sys/kern/sys_generic.c:384 #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:783 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11057 12087K 12402K 166960K 12489 0 pcb 18 14K 16K 166960K 129 0 rtable 172 5K 6K 166960K 370 0 pf 33 17K 21K 166960K 71 0 ifaddr 36 6K 7K 166960K 55 0 ifgroup 51 2K 2K 166960K 73 0 sysctl 4 1K 9K 166960K 10 0 counters 68 36K 37K 166960K 86 0 ioctlops 0 0K 4K 166960K 1554 0 iov 0 0K 12K 166960K 16 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1294 81K 82K 166960K 1581 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 8 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 19 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 19 69K 93K 166960K 424 0 sigio 0 0K 0K 166960K 4 0 proc 72 115K 180K 166960K 576 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 41 0 in_multi 71 5K 6K 166960K 109 0 ether_multi 1 0K 0K 166960K 4 0 mrt 0 0K 0K 166960K 16 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 55 254K 254K 166960K 55 0 exec 0 0K 1K 166960K 443 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 255 163K 180K 166960K 5842 0 UVM aobj 12 2K 2K 166960K 14 0 pinsyscall 45 90K 108K 166960K 1612 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 19 0 NDP 11 0K 1K 166960K 32 0 temp 53 9081K 9205K 166960K 16471 0 kqueue 15 24K 30K 166960K 96 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 51 0 46 1 0 1 1 0 8 0 rtentry 176 114 0 38 5 0 5 5 0 8 0 unpcb 144 187 0 168 2 1 1 2 0 8 0 syncache 336 5 0 5 2 1 1 1 0 8 1 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 736 72 0 67 2 0 2 2 0 8 1 arp 136 19 0 3 1 0 1 1 0 8 0 inpcb 328 321 0 311 6 0 6 6 0 8 5 nd6 152 21 0 6 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 6 0 6 1 0 1 1 0 8 1 pppxif 1576 1 0 1 1 0 1 1 0 8 1 pfstscr 40 1 0 1 1 0 1 1 0 8 1 pffrag 232 5 0 1 1 0 1 1 0 482 0 pffrnode 88 5 0 1 1 0 1 1 0 8 0 pffrent 40 8 0 4 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 45 0 1 1 0 1 1 0 8 0 pfstkey 128 47 0 3 2 0 2 2 0 8 0 pfstate 448 45 0 2 5 0 5 5 0 8 0 pfrule 1360 24 0 19 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 484 0 165 27 0 27 27 0 8 1 art_table 40 485 0 165 5 0 5 5 0 8 0 art_node 32 114 0 46 1 0 1 1 0 8 0 sysvmsgpl 40 14 0 9 1 0 1 1 0 8 0 semupl 112 3 0 3 1 0 1 1 0 8 1 semapl 112 17 0 7 1 0 1 1 0 8 0 shmpl 112 11 0 2 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 2097 0 638 93 0 93 93 0 8 0 ffsino 296 2097 0 638 114 0 114 114 0 8 1 nchpl 144 2719 0 1020 64 0 64 64 0 8 0 rtmask 32 1 0 1 1 0 1 1 0 8 1 vnodes 216 2312 0 0 129 0 129 129 0 8 0 namei 1024 8382 0 8382 2 0 2 2 0 8 2 percpumem 16 58 0 9 1 0 1 1 0 8 0 kstatmem 264 38 0 14 2 0 2 2 0 8 0 scsiplug 72 2 0 2 1 0 1 1 0 8 1 scxspl 216 16612 0 16612 4 3 1 3 1 8 1 plimitpl 152 132 0 112 1 0 1 1 0 8 0 sigapl 424 752 0 703 7 0 7 7 0 8 0 knotepl 120 515 0 0 16 0 16 16 0 8 0 kqueuepl 224 125 0 111 1 0 1 1 0 8 0 pipepl 344 144 0 116 3 0 3 3 0 8 0 fdescpl 528 736 0 703 3 0 3 3 0 8 0 filepl 160 3324 0 3100 12 0 12 12 0 8 2 lockfpl 104 207 0 205 1 0 1 1 0 8 0 lockfspl 48 68 0 66 1 0 1 1 0 8 0 sessionpl 144 34 0 25 1 0 1 1 0 8 0 pgrppl 48 46 0 29 1 0 1 1 0 8 0 ucredpl 104 442 0 428 1 0 1 1 0 8 0 zombiepl 144 705 0 703 1 0 1 1 0 8 0 processpl 1232 752 0 703 5 1 4 5 0 8 0 procpl 664 1256 0 1198 6 0 6 6 0 8 0 sosppl 176 5 0 5 1 0 1 1 0 8 1 sockpl 752 565 0 531 10 0 10 10 0 8 5 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 110 0 0 14 0 14 14 0 8 0 mcl2k 2048 24 0 0 3 0 3 3 0 8 0 mtagpl 96 16 0 0 1 0 1 1 0 8 0 mbufpl 256 196 0 0 13 0 13 13 0 8 0 bufpl 280 6867 0 737 438 0 438 438 0 8 0 anonpl 32 13015 0 0 105 0 105 105 0 246 0 amapchunkpl 152 18075 0 17350 29 0 29 29 0 158 1 amappl16 200 3363 0 3334 33 17 16 32 0 8 8 amappl15 192 3 0 3 1 1 0 1 0 8 0 amappl14 184 437 0 435 1 0 1 1 0 8 0 amappl13 176 126 0 113 1 0 1 1 0 8 0 amappl12 168 992 0 960 2 0 2 2 0 8 0 amappl10 152 68 0 54 1 0 1 1 0 8 0 amappl9 144 266 0 264 1 0 1 1 0 8 0 amappl8 136 105 0 103 1 0 1 1 0 8 0 amappl7 128 151 0 137 1 0 1 1 0 8 0 amappl6 120 164 0 161 1 0 1 1 0 8 0 amappl5 112 119 0 109 1 0 1 1 0 8 0 amappl4 104 300 0 279 1 0 1 1 0 8 0 amappl3 96 3468 0 3341 4 0 4 4 0 8 0 amappl2 88 563 0 500 2 0 2 2 0 8 0 amappl1 80 11533 0 10902 18 1 17 17 0 8 0 amappl 88 5032 0 4854 5 0 5 5 0 92 0 uvmvnodes 80 115 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 13 0 2 1 0 1 1 0 8 0 uaddrrnd 24 736 0 703 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 736 0 703 1 0 1 1 0 8 0 vmmpekpl 168 8007 0 7972 2 0 2 2 0 8 0 vmmpepl 168 56247 0 54225 113 0 113 113 0 357 16 vmsppl 488 735 0 703 5 0 5 5 0 8 0 rwobjpl 80 19264 0 18141 35 0 35 35 0 8 4 pdppl 4096 1479 0 1406 105 28 77 85 0 8 4 pvpl 32 20392 0 0 165 0 165 165 0 265 0 pmappl 256 735 0 703 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 281 0 32 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff838bdff0) 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(ffffffff839943c0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff839943c0) at __mp_lock+0x192 sys/kern/kern_lock.c:173 softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x71154f8d1410, count: 8 ddb{0}> trace x86_ipi_db(ffffffff838bdff0) 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(ffffffff839943c0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff839943c0) at __mp_lock+0x192 sys/kern/kern_lock.c:173 softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x71154f8d1410, count: -7 ddb{0}> machine ddbcpu 1 Stopped at ffs2_balloc+0xa0d: movq 0(%rcx,%rax,8),%r14 ffs2_balloc(fffffd806c7c0398,b7c000,4000,fffffd80097fd4e0,2,ffff80003c415308) at ffs2_balloc+0xa0d sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff80003c415390) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd805fa08cd0,ffff80003c415548,7,fffffd80097fd4e0) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 vn_write(fffffd80691d04a8,ffff80003c415548,0) at vn_write+0x1d3 sys/kern/vfs_vnops.c:408 dofilewritev(ffff80003c4387f0,4,ffff80003c415548,0,ffff80003c415600) at dofilewritev+0x2bd sys/kern/sys_generic.c:384 sys_write(ffff80003c4387f0,ffff80003c4156b0,ffff80003c415600) at sys_write+0xa2 sys/kern/sys_generic.c:300 syscall(ffff80003c4156b0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4156b0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3ea476b330, count: 7 ddb{1}> trace ffs2_balloc(fffffd806c7c0398,b7c000,4000,fffffd80097fd4e0,2,ffff80003c415308) at ffs2_balloc+0xa0d sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff80003c415390) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd805fa08cd0,ffff80003c415548,7,fffffd80097fd4e0) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 vn_write(fffffd80691d04a8,ffff80003c415548,0) at vn_write+0x1d3 sys/kern/vfs_vnops.c:408 dofilewritev(ffff80003c4387f0,4,ffff80003c415548,0,ffff80003c415600) at dofilewritev+0x2bd sys/kern/sys_generic.c:384 sys_write(ffff80003c4387f0,ffff80003c4156b0,ffff80003c415600) at sys_write+0xa2 sys/kern/sys_generic.c:300 syscall(ffff80003c4156b0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4156b0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3ea476b330, count: -8