uvm_fault(0xffffffff836190a8, 0xffff80001ca820a0, 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 88200 38133 0 0x2 0 0 syz-executor *322600 23436 0 0x2 0x1 1K syz-executor ffs2_balloc(fffffd806ac66220,828ad,68,fffffd807f7d33a8,1,ffff800036fbb518) at ffs2_balloc+0x9fe sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff800036fbb5a0) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd807d218b08,ffff800036fbb658,3,fffffd807f7d33a8) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff8000359987c0,fffffd807d218b08,fffffd807f7d33a8,ffff800036fbb720,ffff800036fbb700) at ktrwriteraw+0x1bc sys/kern/kern_ktrace.c:682 ktrsyscall(ffff8000359987c0,b,20,ffff800036fbb8b0) at ktrsyscall+0x31d sys/kern/kern_ktrace.c:182 syscall(ffff800036fbb8b0) at syscall+0x2eb mi_syscall sys/sys/syscall_mi.h:157 [inline] syscall(ffff800036fbb8b0) at syscall+0x2eb sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7447e9cdb1b0, 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(0xffffffff836190a8, 0xffff80001ca820a0, 0, 1) -> d ddb{1}> trace ffs2_balloc(fffffd806ac66220,828ad,68,fffffd807f7d33a8,1,ffff800036fbb518) at ffs2_balloc+0x9fe sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff800036fbb5a0) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd807d218b08,ffff800036fbb658,3,fffffd807f7d33a8) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff8000359987c0,fffffd807d218b08,fffffd807f7d33a8,ffff800036fbb720,ffff800036fbb700) at ktrwriteraw+0x1bc sys/kern/kern_ktrace.c:682 ktrsyscall(ffff8000359987c0,b,20,ffff800036fbb8b0) at ktrsyscall+0x31d sys/kern/kern_ktrace.c:182 syscall(ffff800036fbb8b0) at syscall+0x2eb mi_syscall sys/sys/syscall_mi.h:157 [inline] syscall(ffff800036fbb8b0) at syscall+0x2eb sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7447e9cdb1b0, count: -7 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff800036fbb4c0 rbx 0 rdx 0 rcx 0xffff80001ca82000 rax 0x14 r8 0xffffffffffffffff r9 0xffff800036fbb518 r10 0xd41fce2a33210eb3 r11 0xca90458d58d92641 r12 0x10 r13 0x1 r14 0xffffffff r15 0xfffffd806492c7c0 rip 0xffffffff8290659e ffs2_balloc+0x9fe cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff800036fbb350 ss 0x10 ffs2_balloc+0x9fe: movq 0(%rcx,%rax,8),%r14 ddb{1}> show proc PROC (syz-executor) tid=322600 pid=23436 tcnt=1 stat=onproc flags process=2 proc=1 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000359991e0,0xffff800035999988 process=0xffff800036fc16c8 user=0xffff800036fb6000, vmspace=0xfffffd806bf32a50 estcpu=36, cpticks=3, pctcpu=0.4, user=0, sys=8, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 62891 471899 11748 0 2 0 syz-executor 8251 161648 43528 0 2 0 syz-executor 8251 89316 43528 0 2 0x4000000 syz-executor 8251 325246 43528 0 3 0x4000080 fsleep syz-executor 8251 432721 43528 0 3 0x4000080 fsleep syz-executor 99220 3419 49104 0 2 0 syz-executor 99220 281494 49104 0 2 0x4000000 syz-executor 99220 445324 49104 0 2 0x4000000 syz-executor 60445 212826 23436 0 3 0x80 nanoslp syz-executor 60445 282255 23436 0 3 0x4000080 piperd syz-executor 60445 63417 23436 0 3 0x4000080 fsleep syz-executor 97295 233565 99516 0 3 0x80 nanoslp syz-executor 97295 143668 99516 0 3 0x4000080 kqpoll syz-executor 97295 304122 99516 0 3 0x4000080 fsleep syz-executor 77008 31480 23857 0 3 0x80 nanoslp syz-executor 77008 331498 23857 0 3 0x4000080 pipewr syz-executor 77008 116422 23857 0 3 0x4000080 fsleep syz-executor 38133 88200 27926 0 7 0x2 syz-executor 99516 123087 27926 0 3 0x82 nanoslp syz-executor 23857 492633 27926 0 3 0x82 nanoslp syz-executor 43528 410470 27926 0 2 0x482 syz-executor 49104 12320 27926 0 3 0x82 nanoslp syz-executor *23436 322600 27926 0 7 0x3 syz-executor 11748 413458 27926 0 2 0x482 syz-executor 83200 362271 0 0 3 0x14200 bored sosplice 21476 86405 45925 0 3 0x100082 sbwait ndp 45925 448663 83371 0 3 0x10008a sigsusp sh 83371 118131 27926 0 3 0x82 wait syz-executor 27926 444413 89202 0 2 0x482 syz-executor 89202 447279 43761 0 3 0x10008a sigsusp ksh 43761 41400 53063 0 3 0x98 kqread sshd-session 53063 480898 35235 0 3 0x92 kqread sshd-session 63707 466569 1 0 3 0x100083 ttyin getty 35235 72744 1 0 3 0x88 kqread sshd 97698 317711 12828 74 3 0x1100092 bpf pflogd 12828 150033 1 0 3 0x80 sbwait pflogd 31221 202317 85001 73 2 0x1100010 syslogd 85001 450215 1 0 3 0x100082 sbwait syslogd 65742 231220 1 0 3 0x100080 kqread resolvd 89891 277670 56570 77 3 0x100092 kqread dhcpleased 13390 420370 56570 77 3 0x100092 kqread dhcpleased 56570 148509 1 0 3 0x80 kqread dhcpleased 28461 87577 0 0 3 0x14200 bored smr 19850 469009 0 0 2 0x14200 zerothread 52587 92122 0 0 3 0x14200 aiodoned aiodoned 984 173620 0 0 3 0x14200 syncer update 97438 23790 0 0 3 0x14200 cleaner cleaner 31024 422676 0 0 3 0x14200 reaper reaper 90694 366788 0 0 3 0x14200 pgdaemon pagedaemon 80028 519398 0 0 3 0x14200 bored viomb 27607 507681 0 0 3 0x40014200 acpi0 acpi0 11046 47724 0 0 3 0x40014200 idle1 61881 160294 0 0 3 0x14200 bored softnet3 78750 144997 0 0 3 0x14200 bored softnet2 41744 336846 0 0 3 0x14200 bored softnet1 96486 521995 0 0 3 0x14200 bored softnet0 40815 467183 0 0 3 0x14200 bored systqmp 13092 517143 0 0 3 0x14200 bored systq 69304 467993 0 0 3 0x14200 tmoslp softclockmp 49183 139489 0 0 3 0x40014200 tmoslp softclock 77975 271341 0 0 3 0x40014200 idle0 1 91374 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 99220 (syz-executor) thread 0xffff80003498d1e8 (281494) Process 38133 (syz-executor) thread 0xffff80003498d980 (88200) Process 23436 (syz-executor) thread 0xffff8000359987c0 (322600) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10207 10115K 10489K 166960K 11995 0 pcb 17 18K 21K 166960K 258 0 rtable 245 8K 8K 166960K 857 0 pf 40 18K 20K 166960K 95 0 ifaddr 45 8K 8K 166960K 113 0 ifgroup 62 2K 2K 166960K 129 0 sysctl 3 0K 0K 166960K 3 0 counters 66 36K 36K 166960K 102 0 ioctlops 0 0K 4K 166960K 1553 0 iov 0 0K 12K 166960K 63 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1433 90K 90K 166960K 2047 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 15 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 23 0 dirhash 12 2K 2K 166960K 27 0 ACPI 1690 195K 286K 166960K 12418 0 file desc 18 65K 93K 166960K 869 0 sigio 0 0K 0K 166960K 16 0 proc 73 103K 140K 166960K 973 0 subproc 104 6K 6K 166960K 289 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 65 0 in_multi 99 7K 7K 166960K 280 0 ether_multi 1 0K 0K 166960K 2 0 mrt 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 67 307K 307K 166960K 67 0 exec 0 0K 1K 166960K 652 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 235 72K 91K 166960K 8879 0 UVM aobj 6 2K 2K 166960K 6 0 pinsyscall 44 88K 106K 166960K 2312 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 28 0 NDP 13 0K 2K 166960K 78 0 temp 60 6819K 6885K 166960K 34327 0 kqueue 13 20K 26K 166960K 107 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 120 108 0 104 1 0 1 1 0 8 0 rtentry 112 288 0 177 4 0 4 4 0 8 0 unpcb 144 639 0 621 9 3 6 6 0 8 5 syncache 336 6 0 6 2 1 1 1 0 8 1 tcpqe 32 2 0 2 2 1 1 1 0 8 1 tcpcb 808 194 0 188 6 4 2 4 0 8 1 arp 120 49 0 30 1 0 1 1 0 8 0 inpcb 336 985 0 969 16 9 7 10 0 8 5 nd6 136 71 0 48 1 0 1 1 0 8 0 pkpcb 40 6 0 6 2 1 1 1 0 8 1 kcovpl 48 22 0 14 1 0 1 1 0 8 0 ppxss 1168 3 0 3 3 3 0 1 0 8 0 pfstscr 40 11 0 10 1 0 1 1 0 8 0 pffrag 232 7 0 2 1 0 1 1 0 482 0 pffrnode 88 7 0 2 1 0 1 1 0 8 0 pffrent 40 54 0 49 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 76 0 34 1 0 1 1 0 8 0 pfstkey 128 91 0 44 2 0 2 2 0 8 0 pfstate 376 79 0 39 5 0 5 5 0 8 0 pfrule 1344 26 0 16 2 0 2 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 1162 0 693 35 5 30 30 0 8 0 art_table 32 1164 0 693 4 0 4 4 0 8 0 art_node 16 287 0 187 1 0 1 1 0 8 0 sysvmsgpl 40 20 0 11 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 18 0 8 1 0 1 1 0 8 0 shmpl 112 3 0 0 1 0 1 1 0 8 0 dirhash 1024 27 0 10 3 0 3 3 0 8 0 dino2pl 256 2524 0 993 97 1 96 96 0 8 0 ffsino 272 2524 0 993 103 0 103 103 0 8 0 nchpl 144 3542 0 2989 63 40 23 63 0 8 0 uvmvnodes 80 3157 0 0 65 0 65 65 0 8 0 vnodes 216 3157 0 0 176 0 176 176 0 8 0 namei 1024 12811 0 12809 2 1 1 1 0 8 0 percpumem 16 65 0 18 1 0 1 1 0 8 0 kstatmem 264 62 0 36 2 0 2 2 0 8 0 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 216 17855 0 17855 10 8 2 8 1 8 2 plimitpl 152 116 0 99 1 0 1 1 0 8 0 sigapl 424 1143 0 1092 8 1 7 7 0 8 0 futexpl 64 8676 0 8671 2 1 1 1 0 8 0 knotepl 120 571 0 0 18 0 18 18 0 8 0 kqueuepl 216 170 0 160 1 0 1 1 0 8 0 pipepl 320 234 0 203 6 3 3 6 0 8 0 fdescpl 496 1123 0 1091 5 0 5 5 0 8 0 filepl 152 6036 0 5774 25 8 17 17 0 8 6 lockfpl 104 267 0 265 1 0 1 1 0 8 0 lockfspl 48 117 0 115 1 0 1 1 0 8 0 sessionpl 144 38 0 29 1 0 1 1 0 8 0 pgrppl 48 66 0 49 1 0 1 1 0 8 0 ucredpl 104 719 0 706 1 0 1 1 0 8 0 zombiepl 144 1092 0 1092 1 0 1 1 0 8 1 processpl 1160 1143 0 1092 6 1 5 5 0 8 1 procpl 648 2081 0 2019 7 1 6 6 0 8 0 srpgc 96 14 0 14 4 3 1 1 0 8 1 sosppl 168 5 0 5 3 3 0 1 0 8 0 sockpl 664 1746 0 1708 29 17 12 19 0 8 8 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 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 255 0 0 32 0 32 32 0 8 0 mtagpl 96 14 0 0 1 0 1 1 0 8 0 mbufpl 256 368 0 0 22 0 22 22 0 8 0 bufpl 280 7200 0 1026 442 0 442 442 0 8 0 anonpl 24 203008 0 199511 58 7 51 54 0 185 19 amapchunkpl 152 28751 0 28264 32 0 32 32 0 158 10 amappl16 200 4378 0 4359 21 19 2 14 0 8 0 amappl15 192 14 0 14 1 1 0 1 0 8 0 amappl14 184 145 0 132 1 0 1 1 0 8 0 amappl13 176 37 0 36 1 0 1 1 0 8 0 amappl12 168 1994 0 1962 4 2 2 3 0 8 0 amappl11 160 53 0 39 1 0 1 1 0 8 0 amappl10 152 26 0 26 1 1 0 1 0 8 0 amappl9 144 148 0 148 2 1 1 1 0 8 1 amappl8 136 26 0 24 1 0 1 1 0 8 0 amappl7 128 132 0 119 1 0 1 1 0 8 0 amappl6 120 320 0 318 1 0 1 1 0 8 0 amappl5 112 190 0 178 1 0 1 1 0 8 0 amappl4 104 355 0 335 1 0 1 1 0 8 0 amappl3 96 5739 0 5627 4 0 4 4 0 8 0 amappl2 88 882 0 810 2 0 2 2 0 8 0 amappl1 80 11042 0 10452 16 2 14 14 0 8 0 amappl 88 8331 0 8160 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 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 5 0 0 1 0 1 1 0 8 0 uaddrrnd 24 1123 0 1091 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1123 0 1091 1 0 1 1 0 8 0 vmmpekpl 168 10115 0 10068 3 0 3 3 0 8 0 vmmpepl 168 75579 0 73705 103 12 91 100 0 357 6 vmsppl 440 1122 0 1091 6 1 5 5 0 8 0 rwobjpl 56 26900 0 22769 60 0 60 60 0 8 0 pdppl 4096 2253 0 2182 118 43 75 85 0 8 4 pvpl 32 28113 0 0 228 1 227 227 0 265 0 pmappl 248 1122 0 1091 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 449 0 70 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 __mp_acquire_count(ffffffff8362f2d8,1) 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 biowait(fffffd805fcb37d8) at biowait+0xc1 sys/kern/vfs_bio.c:1254 bwrite(fffffd805fcb37d8) at bwrite+0x2e2 sys/kern/vfs_bio.c:766 VOP_BWRITE(fffffd805fcb37d8) at VOP_BWRITE+0x60 sys/kern/vfs_vops.c:646 ufs_mkdir(ffff80002a0868c0) at ufs_mkdir+0x581 sys/ufs/ufs/ufs_vnops.c:1160 VOP_MKDIR(fffffd80717d31e0,ffff80002a086a20,ffff80002a086a50,ffff80002a086950) at VOP_MKDIR+0x102 sys/kern/vfs_vops.c:394 domkdirat(ffff80003498d980,ffffff9c,77d0e499e3b0,1ff) at domkdirat+0x179 sys/kern/vfs_syscalls.c:3099 syscall(ffff80002a086bd0) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a086bd0) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 end trace frame: 0xffff80002a086c50, count: 0 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 __mp_acquire_count(ffffffff8362f2d8,1) 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 biowait(fffffd805fcb37d8) at biowait+0xc1 sys/kern/vfs_bio.c:1254 bwrite(fffffd805fcb37d8) at bwrite+0x2e2 sys/kern/vfs_bio.c:766 VOP_BWRITE(fffffd805fcb37d8) at VOP_BWRITE+0x60 sys/kern/vfs_vops.c:646 ufs_mkdir(ffff80002a0868c0) at ufs_mkdir+0x581 sys/ufs/ufs/ufs_vnops.c:1160 VOP_MKDIR(fffffd80717d31e0,ffff80002a086a20,ffff80002a086a50,ffff80002a086950) at VOP_MKDIR+0x102 sys/kern/vfs_vops.c:394 domkdirat(ffff80003498d980,ffffff9c,77d0e499e3b0,1ff) at domkdirat+0x179 sys/kern/vfs_syscalls.c:3099 syscall(ffff80002a086bd0) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a086bd0) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x77d0e499e440, count: -15 ddb{0}> machine ddbcpu 1 Stopped at ffs2_balloc+0x9fe: movq 0(%rcx,%rax,8),%r14 ffs2_balloc(fffffd806ac66220,828ad,68,fffffd807f7d33a8,1,ffff800036fbb518) at ffs2_balloc+0x9fe sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff800036fbb5a0) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd807d218b08,ffff800036fbb658,3,fffffd807f7d33a8) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff8000359987c0,fffffd807d218b08,fffffd807f7d33a8,ffff800036fbb720,ffff800036fbb700) at ktrwriteraw+0x1bc sys/kern/kern_ktrace.c:682 ktrsyscall(ffff8000359987c0,b,20,ffff800036fbb8b0) at ktrsyscall+0x31d sys/kern/kern_ktrace.c:182 syscall(ffff800036fbb8b0) at syscall+0x2eb mi_syscall sys/sys/syscall_mi.h:157 [inline] syscall(ffff800036fbb8b0) at syscall+0x2eb sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7447e9cdb1b0, count: 8 ddb{1}> trace ffs2_balloc(fffffd806ac66220,828ad,68,fffffd807f7d33a8,1,ffff800036fbb518) at ffs2_balloc+0x9fe sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff800036fbb5a0) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd807d218b08,ffff800036fbb658,3,fffffd807f7d33a8) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff8000359987c0,fffffd807d218b08,fffffd807f7d33a8,ffff800036fbb720,ffff800036fbb700) at ktrwriteraw+0x1bc sys/kern/kern_ktrace.c:682 ktrsyscall(ffff8000359987c0,b,20,ffff800036fbb8b0) at ktrsyscall+0x31d sys/kern/kern_ktrace.c:182 syscall(ffff800036fbb8b0) at syscall+0x2eb mi_syscall sys/sys/syscall_mi.h:157 [inline] syscall(ffff800036fbb8b0) at syscall+0x2eb sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7447e9cdb1b0, count: -7