panic: kernel diagnostic assertion "len >= 0 && !M_READONLY(m)" failed: file "/syzkaller/managers/main/kernel/sys/kern/uipc_mbuf.c", line 1384 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 60157 80936 0 0 0x4000000 0 syz-executor.5 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff8254e79b) at panic+0x161 sys/kern/subr_prf.c:202 __assert(ffffffff825bffff,ffffffff825d4d25,568,ffffffff825659c6) at __assert+0x25 sys/kern/subr_prf.c:161 m_align(fffffd8060aa8c00,ffffffd4) at m_align+0x1a0 sys/kern/uipc_mbuf.c:1385 bpf_movein(ffff80002e621b40,ffff800000bfae00,ffff80002e6218a8,ffff80002e6217a8) at bpf_movein+0x25e sys/net/bpf.c:228 bpfwrite(21700,ffff80002e621b40,1) at bpfwrite+0x128 sys/net/bpf.c:648 spec_write(ffff80002e6219a0) at spec_write+0xcb sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd8078cf21c0,ffff80002e621b40,1,fffffd807f7d8660) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 vn_write(fffffd8064fe7a58,ffff80002e621b40,1) at vn_write+0x19c sys/kern/vfs_vnops.c:414 dofilewritev(ffff8000215fba40,3,ffff80002e621b40,1,ffff80002e621c40) at dofilewritev+0x19c sys/kern/sys_generic.c:381 sys_pad_pwrite(ffff8000215fba40,ffff80002e621be8,ffff80002e621c40) at sys_pad_pwrite+0x92 sys_pwrite sys/kern/vfs_syscalls.c:3354 [inline] sys_pad_pwrite(ffff8000215fba40,ffff80002e621be8,ffff80002e621c40) at sys_pad_pwrite+0x92 sys/kern/vfs_syscalls.c:3426 syscall(ffff80002e621cb0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x95abdc023d0, count: 2 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> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic *cpu0: kernel diagnostic assertion "len >= 0 && !M_READONLY(m)" failed: file "/syzkaller/managers/main/kernel/sys/kern/uipc_mbuf.c", line 1384 ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff8254e79b) at panic+0x161 sys/kern/subr_prf.c:202 __assert(ffffffff825bffff,ffffffff825d4d25,568,ffffffff825659c6) at __assert+0x25 sys/kern/subr_prf.c:161 m_align(fffffd8060aa8c00,ffffffd4) at m_align+0x1a0 sys/kern/uipc_mbuf.c:1385 bpf_movein(ffff80002e621b40,ffff800000bfae00,ffff80002e6218a8,ffff80002e6217a8) at bpf_movein+0x25e sys/net/bpf.c:228 bpfwrite(21700,ffff80002e621b40,1) at bpfwrite+0x128 sys/net/bpf.c:648 spec_write(ffff80002e6219a0) at spec_write+0xcb sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd8078cf21c0,ffff80002e621b40,1,fffffd807f7d8660) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 vn_write(fffffd8064fe7a58,ffff80002e621b40,1) at vn_write+0x19c sys/kern/vfs_vnops.c:414 dofilewritev(ffff8000215fba40,3,ffff80002e621b40,1,ffff80002e621c40) at dofilewritev+0x19c sys/kern/sys_generic.c:381 sys_pad_pwrite(ffff8000215fba40,ffff80002e621be8,ffff80002e621c40) at sys_pad_pwrite+0x92 sys_pwrite sys/kern/vfs_syscalls.c:3354 [inline] sys_pad_pwrite(ffff8000215fba40,ffff80002e621be8,ffff80002e621c40) at sys_pad_pwrite+0x92 sys/kern/vfs_syscalls.c:3426 syscall(ffff80002e621cb0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x95abdc023d0, count: -13 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80002e6215d0 rbx 0x18 rdx 0xffff800000e155c0 rcx 0 rax 0xffff8000215fba40 r8 0 r9 0x8080808080808080 r10 0x3107e82c29c8f075 r11 0x654529ce6187df78 r12 0 r13 0xffffffd4 r14 0 r15 0x1 rip 0xffffffff820919b8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80002e6215c0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (syz-executor.5) pid=60157 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=83, nice=20 forw=0xffffffffffffffff, list=0xffff8000215fafc0,0xffff8000215fb510 process=0xffff8000236ec7d8 user=0xffff80002e61c000, vmspace=0xfffffd805b522770 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 88683 349890 30510 0 2 0 syz-executor.2 88683 408271 30510 0 3 0x4000080 fsleep syz-executor.2 99916 414199 75084 0 2 0 syz-executor.7 99916 90878 75084 0 3 0x4000080 fsleep syz-executor.7 80936 318516 10311 0 2 0 syz-executor.5 *80936 60157 10311 0 7 0x4000000 syz-executor.5 86845 207187 45343 0 2 0 syz-executor.1 86845 469899 45343 0 3 0x4000080 fsleep syz-executor.1 86845 419900 45343 0 3 0x4000080 fsleep syz-executor.1 86845 186824 45343 0 3 0x4000080 fsleep syz-executor.1 7197 443258 27693 0 2 0x81000 syz-executor.0 7197 275699 27693 0 3 0x4003000 suspend syz-executor.0 29564 348226 72138 0 3 0x80 nanoslp syz-executor.6 29564 401246 72138 0 3 0x4000080 fsleep syz-executor.6 29564 342564 72138 0 3 0x4000080 fsleep syz-executor.6 29564 87925 72138 0 2 0x4000000 syz-executor.6 90935 497046 63248 0 2 0 syz-executor.3 90935 294923 63248 0 3 0x4000080 fsleep syz-executor.3 27693 461456 60140 0 2 0x482 syz-executor.0 30510 421796 60140 0 3 0x82 nanoslp syz-executor.2 72138 509853 60140 0 2 0x482 syz-executor.6 38625 223206 60140 0 2 0x482 syz-executor.4 63248 280299 60140 0 2 0x482 syz-executor.3 10311 354323 60140 0 2 0x482 syz-executor.5 75084 335468 60140 0 3 0x82 nanoslp syz-executor.7 45343 491256 60140 0 2 0x482 syz-executor.1 31231 251275 0 0 3 0x14280 nfsidl nfsio 8457 103843 0 0 3 0x14280 nfsidl nfsio 58575 463618 0 0 3 0x14280 nfsidl nfsio 49844 265646 0 0 3 0x14280 nfsidl nfsio 84130 489502 0 0 3 0x14280 nfsidl nfsio 40550 365012 0 0 3 0x14280 nfsidl nfsio 76935 65732 0 0 3 0x14280 nfsidl nfsio 7260 451073 0 0 3 0x14280 nfsidl nfsio 73840 139025 0 0 3 0x14280 nfsidl nfsio 43704 54171 0 0 3 0x14280 nfsidl nfsio 11587 131622 0 0 3 0x14280 nfsidl nfsio 84454 23806 0 0 3 0x14280 nfsidl nfsio 61332 275621 0 0 3 0x14280 nfsidl nfsio 43369 305733 0 0 3 0x14280 nfsidl nfsio 79077 321748 0 0 3 0x14280 nfsidl nfsio 89637 334419 0 0 3 0x14280 nfsidl nfsio 41306 91635 0 0 3 0x14280 nfsidl nfsio 72240 481314 0 0 3 0x14280 nfsidl nfsio 46394 447619 0 0 3 0x14280 nfsidl nfsio 73511 466364 0 0 3 0x14280 nfsidl nfsio 13732 313060 1 0 3 0x100083 ttyin getty 10582 134957 0 0 3 0x14200 acct acct 25674 36654 0 0 3 0x14200 bored sosplice 60140 33038 4856 0 3 0x82 thrsleep syz-fuzzer 60140 373836 4856 0 2 0x4000002 syz-fuzzer 60140 290071 4856 0 3 0x4000082 thrsleep syz-fuzzer 60140 333968 4856 0 3 0x4000082 kqread syz-fuzzer 60140 12748 4856 0 3 0x4000082 thrsleep syz-fuzzer 60140 504359 4856 0 3 0x4000082 thrsleep syz-fuzzer 60140 479452 4856 0 3 0x4000082 thrsleep syz-fuzzer 60140 243433 4856 0 3 0x4000082 thrsleep syz-fuzzer 60140 291467 4856 0 3 0x4000082 thrsleep syz-fuzzer 4856 382577 20352 0 3 0x10008a sigsusp ksh 20352 113169 63326 0 3 0x9a kqread sshd 63326 275708 1 0 3 0x88 kqread sshd 7441 479241 84221 73 3 0x100090 kqread syslogd 84221 187224 1 0 3 0x100082 netio syslogd 57367 476170 1 0 3 0x100080 kqread resolvd 76905 365185 62276 77 3 0x100092 kqread dhcpleased 1758 481719 62276 77 3 0x100092 kqread dhcpleased 62276 91620 1 0 3 0x80 kqread dhcpleased 57041 361874 0 0 3 0x14200 bored smr 42646 199313 0 0 2 0x14200 zerothread 82526 179514 0 0 3 0x14200 aiodoned aiodoned 92113 423284 0 0 3 0x14200 syncer update 41009 21516 0 0 3 0x14200 cleaner cleaner 78156 363266 0 0 3 0x14200 reaper reaper 50258 495150 0 0 3 0x14200 pgdaemon pagedaemon 62631 451572 0 0 3 0x14200 bored viomb 62347 328584 0 0 3 0x40014200 acpi0 acpi0 16921 221943 0 0 3 0x14200 bored softnet 89737 267989 0 0 3 0x14200 bored systqmp 8209 424916 0 0 3 0x14200 bored systq 63709 140200 0 0 2 0x40014200 softclock 99857 369152 0 0 3 0x40014200 idle0 1 483468 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10231 6754K 7669K 78643K 93990 0 pcb 14 18K 20K 78643K 2804 0 rtable 220 18K 20K 78643K 5754 0 ifaddr 87 20K 23K 78643K 2198 0 sysctl 3 1K 1K 78643K 7 0 counters 27 17K 17K 78643K 248 0 ioctlops 0 0K 4K 78643K 5223 0 iov 0 0K 28K 78643K 2282 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1677 105K 105K 78643K 23223 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 241 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 5531 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 17 61K 74K 78643K 20993 0 sigio 0 0K 0K 78643K 310 0 proc 68 55K 80K 78643K 3647 0 subproc 104 6K 8K 78643K 1326 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 1114 0 in_multi 77 5K 6K 78643K 1970 0 ether_multi 1 0K 0K 78643K 283 0 mrt 1 0K 0K 78643K 92 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 247 1102K 1102K 78643K 247 0 exec 0 0K 2K 78643K 6143 0 pfkey data 0 0K 1K 78643K 12 0 tdb 3 0K 0K 78643K 3 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 639 1406K 1407K 78643K 252634 0 UVM aobj 131 8K 8K 78643K 131 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 1194 0 NDP 13 0K 2K 78643K 495 0 temp 142 4713K 6249K 78643K 161247 0 kqueue 14 20K 28K 78643K 1343 0 SYN cache 2 16K 16K 78643K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 1759 0 1756 27 26 1 5 0 8 0 rtentry 112 1488 0 1401 5 2 3 4 0 8 0 unpcb 136 14686 0 14673 162 161 1 9 0 8 0 syncache 296 58 0 58 16 16 0 1 0 8 0 sackhl 24 2 0 2 2 2 0 1 0 8 0 tcpqe 32 306 0 306 11 11 0 2 0 8 0 tcpcb 736 11036 0 11031 334 325 9 18 0 8 8 arp 88 211 0 194 1 0 1 1 0 8 0 ipq 40 27 0 27 8 8 0 1 0 8 0 ipqe 40 312 0 312 8 8 0 1 0 8 0 inpcb 304 22696 0 22685 300 291 9 19 0 8 8 rttmr 72 21 0 21 7 6 1 1 0 8 1 ip6q 72 11 0 11 4 4 0 1 0 8 0 ip6af 40 18 0 18 4 4 0 1 0 8 0 nd6 48 395 0 377 1 0 1 1 0 8 0 pkpcb 40 60 0 60 13 12 1 1 0 8 1 kcovpl 48 98 0 90 1 0 1 1 0 8 0 ppxss 1152 40 0 40 12 12 0 1 0 8 0 pfstscr 40 30 0 28 2 1 1 1 0 8 0 pfrktable 1344 667 0 661 3 2 1 2 0 8 0 pftag 88 73 0 71 3 2 1 1 0 8 0 pfstitem 24 28 0 24 1 0 1 1 0 8 0 pfstkey 112 52 0 48 2 1 1 1 0 8 0 pfstate 320 26 0 24 2 1 1 1 0 8 0 pfrule 1360 461 0 435 5 2 3 4 0 8 0 art_heap8 4096 6 0 5 5 4 1 3 0 8 0 art_heap4 256 6880 0 6519 88 63 25 35 0 8 2 art_table 32 6886 0 6524 8 4 4 5 0 8 0 art_node 16 1440 0 1362 1 0 1 1 0 8 0 sysvmsgpl 40 12 0 4 1 0 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 5529 0 5519 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 29194 0 27673 96 0 96 96 0 8 0 ffsino 240 29194 0 27673 91 0 91 91 0 8 0 nchpl 144 57641 0 56020 63 1 62 63 0 8 0 uvmvnodes 80 7447 0 0 152 0 152 152 0 8 0 vnodes 224 7447 0 0 439 0 439 439 0 8 0 namei 1024 214093 0 214093 14 13 1 2 0 8 1 vcpupl 1984 106 0 0 14 0 14 14 0 8 0 vmpool 528 142 0 36 9 1 8 8 0 8 0 pfiaddrpl 120 229 0 223 1 0 1 1 0 8 0 scsiplug 72 15 0 15 4 4 0 1 0 8 0 scxspl 216 179496 0 179496 47 46 1 8 0 8 1 plimitpl 152 2443 0 2429 1 0 1 1 0 8 0 sigapl 424 21154 0 21091 12 4 8 8 0 8 0 futexpl 64 215269 0 215261 12 11 1 1 0 8 0 knotepl 120 180794 0 180712 15 12 3 10 0 8 0 kqueuepl 184 4822 0 4813 74 73 1 7 0 8 0 pipepl 304 4303 0 4275 124 121 3 10 0 8 0 fdescpl 432 21061 0 21033 6 2 4 4 0 8 0 filepl 120 155150 0 154907 230 218 12 18 0 8 0 lockfpl 104 5489 0 5486 12 11 1 2 0 8 0 lockfspl 48 1338 0 1335 1 0 1 1 0 8 0 sessionpl 144 117 0 101 1 0 1 1 0 8 0 pgrppl 48 346 0 330 1 0 1 1 0 8 0 ucredpl 96 22314 0 22301 1 0 1 1 0 8 0 zombiepl 144 21092 0 21090 3 2 1 1 0 8 0 processpl 1000 21154 0 21090 13 4 9 9 0 8 0 procpl 672 52105 0 52022 56 48 8 9 0 8 1 sosppl 168 160 0 158 33 32 1 1 0 8 0 sockpl 448 39243 0 39217 832 821 11 32 0 8 8 mcl64k 65536 868 0 868 37 36 1 2 0 8 1 mcl16k 16384 140 0 140 38 37 1 1 0 8 1 mcl12k 12288 674 0 674 58 57 1 1 0 8 1 mcl9k 9216 281 0 281 45 45 0 1 0 8 0 mcl8k 8192 1755 0 1755 47 46 1 1 0 8 1 mcl4k 4096 3041 0 3041 27 26 1 1 0 8 1 mcl2k2 2112 225 0 225 54 53 1 1 0 8 1 mcl2k 2048 121391 0 121196 128 102 26 33 0 8 0 mtagpl 96 19410 0 18731 114 96 18 45 0 8 0 mbufpl 256 354403 0 353482 671 607 64 343 0 8 1 bufpl 288 39654 0 32206 533 0 533 533 0 8 0 anonpl 24 5806940 0 5785197 507 365 142 172 0 188 5 amapchunkpl 152 1461779 0 1460910 3366 3331 35 666 0 158 0 amappl16 200 61805 0 60988 240 186 54 64 0 8 8 amappl15 192 2328 0 2321 1 0 1 1 0 8 0 amappl14 184 3769 0 3762 1 0 1 1 0 8 0 amappl13 176 1536 0 1531 1 0 1 1 0 8 0 amappl12 168 3495 0 3488 1 0 1 1 0 8 0 amappl11 160 2133 0 2119 1 0 1 1 0 8 0 amappl10 152 4773 0 4760 1 0 1 1 0 8 0 amappl9 144 2992 0 2987 1 0 1 1 0 8 0 amappl8 136 3907 0 3738 7 1 6 7 0 8 0 amappl7 128 1611 0 1599 1 0 1 1 0 8 0 amappl6 120 3062 0 3032 3 2 1 2 0 8 0 amappl5 112 22929 0 22910 1 0 1 1 0 8 0 amappl4 104 6371 0 6332 2 0 2 2 0 8 0 amappl3 96 5314 0 5300 1 0 1 1 0 8 0 amappl2 88 4213 0 4138 3 1 2 3 0 8 0 amappl1 80 370147 0 369557 20 7 13 18 0 8 0 amappl 88 250136 0 249775 10 1 9 9 0 92 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 72 130 0 0 3 0 3 3 0 8 0 uaddrrnd 24 21203 0 21069 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 21203 0 21069 1 0 1 1 0 8 0 vmmpekpl 168 144863 0 144799 4 0 4 4 0 8 0 vmmpepl 168 1933011 0 1929877 560 406 154 179 0 357 3 vmsppl 272 21202 0 21069 11 2 9 9 0 8 0 rwobjpl 24 450282 0 440675 68 8 60 60 0 8 2 pdppl 4096 42412 0 42244 1292 1122 170 170 0 8 2 pvpl 32 9770038 0 9744821 768 550 218 267 0 265 6 pmappl 216 21202 0 21069 8 0 8 8 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 4255 0 3208 35 4 31 34 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff8254e79b) at panic+0x161 sys/kern/subr_prf.c:202 __assert(ffffffff825bffff,ffffffff825d4d25,568,ffffffff825659c6) at __assert+0x25 sys/kern/subr_prf.c:161 m_align(fffffd8060aa8c00,ffffffd4) at m_align+0x1a0 sys/kern/uipc_mbuf.c:1385 bpf_movein(ffff80002e621b40,ffff800000bfae00,ffff80002e6218a8,ffff80002e6217a8) at bpf_movein+0x25e sys/net/bpf.c:228 bpfwrite(21700,ffff80002e621b40,1) at bpfwrite+0x128 sys/net/bpf.c:648 spec_write(ffff80002e6219a0) at spec_write+0xcb sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd8078cf21c0,ffff80002e621b40,1,fffffd807f7d8660) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 vn_write(fffffd8064fe7a58,ffff80002e621b40,1) at vn_write+0x19c sys/kern/vfs_vnops.c:414 dofilewritev(ffff8000215fba40,3,ffff80002e621b40,1,ffff80002e621c40) at dofilewritev+0x19c sys/kern/sys_generic.c:381 sys_pad_pwrite(ffff8000215fba40,ffff80002e621be8,ffff80002e621c40) at sys_pad_pwrite+0x92 sys_pwrite sys/kern/vfs_syscalls.c:3354 [inline] sys_pad_pwrite(ffff8000215fba40,ffff80002e621be8,ffff80002e621c40) at sys_pad_pwrite+0x92 sys/kern/vfs_syscalls.c:3426 syscall(ffff80002e621cb0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x95abdc023d0, count: -13 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff8254e79b) at panic+0x161 sys/kern/subr_prf.c:202 __assert(ffffffff825bffff,ffffffff825d4d25,568,ffffffff825659c6) at __assert+0x25 sys/kern/subr_prf.c:161 m_align(fffffd8060aa8c00,ffffffd4) at m_align+0x1a0 sys/kern/uipc_mbuf.c:1385 bpf_movein(ffff80002e621b40,ffff800000bfae00,ffff80002e6218a8,ffff80002e6217a8) at bpf_movein+0x25e sys/net/bpf.c:228 bpfwrite(21700,ffff80002e621b40,1) at bpfwrite+0x128 sys/net/bpf.c:648 spec_write(ffff80002e6219a0) at spec_write+0xcb sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd8078cf21c0,ffff80002e621b40,1,fffffd807f7d8660) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 vn_write(fffffd8064fe7a58,ffff80002e621b40,1) at vn_write+0x19c sys/kern/vfs_vnops.c:414 dofilewritev(ffff8000215fba40,3,ffff80002e621b40,1,ffff80002e621c40) at dofilewritev+0x19c sys/kern/sys_generic.c:381 sys_pad_pwrite(ffff8000215fba40,ffff80002e621be8,ffff80002e621c40) at sys_pad_pwrite+0x92 sys_pwrite sys/kern/vfs_syscalls.c:3354 [inline] sys_pad_pwrite(ffff8000215fba40,ffff80002e621be8,ffff80002e621c40) at sys_pad_pwrite+0x92 sys/kern/vfs_syscalls.c:3426 syscall(ffff80002e621cb0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x95abdc023d0, count: -13