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 *184748 76225 0 0 0x4000000 0 syz-executor.2 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(fffffd8068f30300,ffffffe6) at m_align+0x1a0 sys/kern/uipc_mbuf.c:1385 bpf_movein(ffff80002b39db80,ffff800000d03a00,ffff80002b39d8e8,ffff80002b39d7e8) at bpf_movein+0x25e sys/net/bpf.c:228 bpfwrite(21700,ffff80002b39db80,1) at bpfwrite+0x128 sys/net/bpf.c:648 spec_write(ffff80002b39d9e0) at spec_write+0xcb sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd8066ec48d8,ffff80002b39db80,1,fffffd807f7d88a0) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 vn_write(fffffd8075443d98,ffff80002b39db80,1) at vn_write+0x19c sys/kern/vfs_vnops.c:414 dofilewritev(ffff80002169e2a0,3,ffff80002b39db80,1,ffff80002b39dc80) at dofilewritev+0x19c sys/kern/sys_generic.c:381 sys_pad_pwrite(ffff80002169e2a0,ffff80002b39dc28,ffff80002b39dc80) at sys_pad_pwrite+0x92 sys_pwrite sys/kern/vfs_syscalls.c:3354 [inline] sys_pad_pwrite(ffff80002169e2a0,ffff80002b39dc28,ffff80002b39dc80) at sys_pad_pwrite+0x92 sys/kern/vfs_syscalls.c:3426 syscall(ffff80002b39dcf0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf466d311250, 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(fffffd8068f30300,ffffffe6) at m_align+0x1a0 sys/kern/uipc_mbuf.c:1385 bpf_movein(ffff80002b39db80,ffff800000d03a00,ffff80002b39d8e8,ffff80002b39d7e8) at bpf_movein+0x25e sys/net/bpf.c:228 bpfwrite(21700,ffff80002b39db80,1) at bpfwrite+0x128 sys/net/bpf.c:648 spec_write(ffff80002b39d9e0) at spec_write+0xcb sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd8066ec48d8,ffff80002b39db80,1,fffffd807f7d88a0) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 vn_write(fffffd8075443d98,ffff80002b39db80,1) at vn_write+0x19c sys/kern/vfs_vnops.c:414 dofilewritev(ffff80002169e2a0,3,ffff80002b39db80,1,ffff80002b39dc80) at dofilewritev+0x19c sys/kern/sys_generic.c:381 sys_pad_pwrite(ffff80002169e2a0,ffff80002b39dc28,ffff80002b39dc80) at sys_pad_pwrite+0x92 sys_pwrite sys/kern/vfs_syscalls.c:3354 [inline] sys_pad_pwrite(ffff80002169e2a0,ffff80002b39dc28,ffff80002b39dc80) at sys_pad_pwrite+0x92 sys/kern/vfs_syscalls.c:3426 syscall(ffff80002b39dcf0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf466d311250, count: -13 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80002b39d610 rbx 0x28 rdx 0xffff800000bd2980 rcx 0 rax 0xffff80002169e2a0 r8 0 r9 0x8080808080808080 r10 0xa516a050bb4c1e39 r11 0xc1d9722dbff754fd r12 0 r13 0xffffffe6 r14 0 r15 0x1 rip 0xffffffff820919b8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80002b39d600 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (syz-executor.2) pid=184748 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=83, nice=20 forw=0xffffffffffffffff, list=0xffff80002169e7e0,0xffff8000215eefd0 process=0xffff800024cda810 user=0xffff80002b398000, vmspace=0xfffffd806898e780 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 22146 241475 19591 0 3 0x80 nanoslp syz-executor.6 22146 372556 19591 0 3 0x4000080 fsleep syz-executor.6 76225 202430 24852 0 2 0 syz-executor.2 *76225 184748 24852 0 7 0x4000000 syz-executor.2 6266 314749 44455 0 2 0 syz-executor.3 6266 336913 44455 0 3 0x4000080 fsleep syz-executor.3 30701 389649 3527 0 2 0 syz-executor.5 95080 327610 38341 0 2 0 syz-executor.4 95080 141250 38341 0 3 0x4000080 fsleep syz-executor.4 32008 271601 57548 0 2 0 syz-executor.7 32008 154995 57548 0 3 0x4000080 fsleep syz-executor.7 77727 351333 96983 0 3 0x80 nanoslp syz-executor.1 77727 385999 96983 0 3 0x4000080 rest syz-executor.1 77727 110737 96983 0 3 0x4000080 fsleep syz-executor.1 35279 250523 49285 0 2 0 syz-executor.0 35279 352994 49285 0 3 0x4000080 piperd syz-executor.0 35279 92341 49285 0 3 0x4000080 piperd syz-executor.0 35279 406153 49285 0 3 0x4000080 fsleep syz-executor.0 75107 22125 0 0 3 0x14200 acct acct 57548 997 78999 0 3 0x82 nanoslp syz-executor.7 46680 272885 0 0 3 0x14280 nfsidl nfsio 83273 324024 0 0 3 0x14280 nfsidl nfsio 50897 437216 0 0 3 0x14280 nfsidl nfsio 22804 372690 0 0 3 0x14280 nfsidl nfsio 36289 271838 0 0 3 0x14280 nfsidl nfsio 84207 283940 0 0 3 0x14280 nfsidl nfsio 71409 267025 0 0 3 0x14280 nfsidl nfsio 4013 515070 0 0 3 0x14280 nfsidl nfsio 10882 104291 0 0 3 0x14280 nfsidl nfsio 89069 216601 0 0 3 0x14280 nfsidl nfsio 38986 135699 0 0 3 0x14280 nfsidl nfsio 18319 1340 0 0 3 0x14280 nfsidl nfsio 74662 456017 0 0 3 0x14280 nfsidl nfsio 31589 488540 0 0 3 0x14280 nfsidl nfsio 64621 357348 0 0 3 0x14280 nfsidl nfsio 2552 353391 0 0 3 0x14280 nfsidl nfsio 9086 168901 0 0 3 0x14280 nfsidl nfsio 31950 300865 0 0 3 0x14280 nfsidl nfsio 3726 163377 0 0 3 0x14280 nfsidl nfsio 35621 264412 0 0 3 0x14280 nfsidl nfsio 49285 488260 78999 0 2 0x482 syz-executor.0 38341 18026 78999 0 3 0x82 nanoslp syz-executor.4 44455 218501 78999 0 2 0x482 syz-executor.3 30840 371023 0 0 3 0x14200 bored sosplice 24852 414499 78999 0 3 0x82 nanoslp syz-executor.2 3527 469845 78999 0 2 0x482 syz-executor.5 19591 442774 78999 0 2 0x482 syz-executor.6 96983 234168 78999 0 2 0x482 syz-executor.1 78999 9036 18021 0 3 0x82 thrsleep syz-fuzzer 78999 345371 18021 0 3 0x4000082 thrsleep syz-fuzzer 78999 15659 18021 0 3 0x4000082 thrsleep syz-fuzzer 78999 244821 18021 0 3 0x4000082 kqread syz-fuzzer 78999 22094 18021 0 3 0x4000082 thrsleep syz-fuzzer 78999 256088 18021 0 3 0x4000082 thrsleep syz-fuzzer 78999 206677 18021 0 3 0x4000082 thrsleep syz-fuzzer 78999 410884 18021 0 3 0x4000082 thrsleep syz-fuzzer 78999 461188 18021 0 3 0x4000082 thrsleep syz-fuzzer 18021 4141 56353 0 3 0x10008a sigsusp ksh 56353 489799 30984 0 3 0x9a kqread sshd 63198 320719 1 0 3 0x100083 ttyin getty 30984 177712 1 0 3 0x88 kqread sshd 39733 313096 59532 73 3 0x100090 kqread syslogd 59532 445653 1 0 3 0x100082 netio syslogd 31092 171161 1 0 3 0x100080 kqread resolvd 29396 399935 85715 77 3 0x100092 kqread dhcpleased 83908 128785 85715 77 3 0x100092 kqread dhcpleased 85715 128263 1 0 3 0x80 kqread dhcpleased 44774 136802 0 0 3 0x14200 bored smr 48514 207110 0 0 2 0x14200 zerothread 6050 304792 0 0 3 0x14200 aiodoned aiodoned 89250 430060 0 0 3 0x14200 syncer update 5209 514457 0 0 3 0x14200 cleaner cleaner 9890 174765 0 0 3 0x14200 reaper reaper 35113 426921 0 0 3 0x14200 pgdaemon pagedaemon 77693 396101 0 0 3 0x14200 bored viomb 18489 488602 0 0 3 0x40014200 acpi0 acpi0 10045 444807 0 0 3 0x14200 bored softnet 8463 94527 0 0 3 0x14200 bored systqmp 99424 484610 0 0 3 0x14200 bored systq 93696 350971 0 0 2 0x40014200 softclock 57435 14286 0 0 3 0x40014200 idle0 1 413184 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 10194 6479K 7017K 78643K 16570 0 pcb 13 16K 18K 78643K 581 0 rtable 228 7K 10K 78643K 833 0 ifaddr 86 18K 18K 78643K 353 0 counters 27 17K 17K 78643K 51 0 ioctlops 0 0K 4K 78643K 491 0 iov 0 0K 16K 78643K 327 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1430 89K 90K 78643K 3103 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 26 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 1274 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 18 65K 81K 78643K 2640 0 sigio 0 0K 0K 78643K 14 0 proc 58 55K 79K 78643K 800 0 subproc 104 6K 6K 78643K 221 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 102 0 in_multi 98 6K 7K 78643K 302 0 ether_multi 1 0K 0K 78643K 39 0 mrt 2 0K 0K 78643K 5 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 175 784K 784K 78643K 175 0 exec 0 0K 2K 78643K 1144 0 pfkey data 0 0K 1K 78643K 4 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 412 385K 386K 78643K 33448 0 UVM aobj 72 8K 8K 78643K 75 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 604 0 NDP 12 0K 2K 78643K 70 0 temp 129 4695K 6226K 78643K 41000 0 kqueue 12 18K 24K 78643K 146 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 120 158 0 155 2 1 1 2 0 8 0 rtentry 112 229 0 127 4 0 4 4 0 8 0 unpcb 136 1003 0 990 12 7 5 5 0 8 4 syncache 296 15 0 15 5 4 1 1 0 8 1 tcpqe 32 3 0 3 2 1 1 1 0 8 1 tcpcb 736 1467 0 1459 51 41 10 14 0 8 8 arp 88 37 0 21 1 0 1 1 0 8 0 ipq 40 5 0 3 3 2 1 1 0 8 0 ipqe 40 79 0 77 3 2 1 1 0 8 0 inpcb 304 4015 0 4004 41 32 9 12 0 8 7 ip6q 72 2 0 1 1 0 1 1 0 8 0 ip6af 40 3 0 2 1 0 1 1 0 8 0 nd6 48 58 0 31 1 0 1 1 0 8 0 pkpcb 40 85 0 85 3 3 0 1 0 8 0 kcovpl 48 17 0 9 1 0 1 1 0 8 0 ppxss 1152 8 0 8 2 2 0 1 0 8 0 pfstscr 40 6 0 5 1 0 1 1 0 8 0 pfosfp 40 7 0 5 1 0 1 1 0 8 0 pfosfpen 112 7 0 2 1 0 1 1 0 8 0 pfrktable 1344 63 0 62 4 3 1 1 0 8 0 pftag 88 2 0 0 1 0 1 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 112 12 0 10 1 0 1 1 0 8 0 pfstate 320 6 0 5 1 0 1 1 0 8 0 pfrule 1360 105 0 101 5 4 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 999 0 549 33 4 29 31 0 8 0 art_table 32 1000 0 549 4 0 4 4 0 8 0 art_node 16 228 0 139 1 0 1 1 0 8 0 sysvmsgpl 40 201 0 177 1 0 1 1 0 8 0 semapl 112 1267 0 1257 1 0 1 1 0 8 0 shmpl 112 72 0 3 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 4831 0 3395 91 0 91 91 0 8 0 ffsino 240 4831 0 3395 85 0 85 85 0 8 0 nchpl 144 8441 0 6809 63 0 63 63 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 31549 0 31549 2 1 1 2 0 8 1 vcpupl 1984 22 0 0 3 0 3 3 0 8 0 vmpool 528 23 0 1 2 0 2 2 0 8 0 pfiaddrpl 120 17 0 17 3 3 0 1 0 8 0 scxspl 216 24167 0 24167 13 12 1 8 0 8 1 plimitpl 152 298 0 284 1 0 1 1 0 8 0 sigapl 424 2923 0 2859 9 1 8 8 0 8 0 futexpl 64 27378 0 27372 1 0 1 1 0 8 0 knotepl 120 31553 0 31473 6 3 3 4 0 8 0 kqueuepl 184 655 0 647 10 9 1 4 0 8 0 pipepl 304 701 0 671 20 15 5 8 0 8 1 fdescpl 432 2885 0 2856 4 0 4 4 0 8 0 filepl 120 22012 0 21761 30 17 13 15 0 8 3 lockfpl 104 465 0 462 1 0 1 1 0 8 0 lockfspl 48 168 0 165 1 0 1 1 0 8 0 sessionpl 144 32 0 16 1 0 1 1 0 8 0 pgrppl 48 35 0 19 1 0 1 1 0 8 0 ucredpl 96 2104 0 2094 1 0 1 1 0 8 0 zombiepl 144 2859 0 2859 1 0 1 1 0 8 1 processpl 1000 2923 0 2859 9 0 9 9 0 8 0 procpl 672 6945 0 6863 10 2 8 8 0 8 1 sosppl 168 22 0 22 4 4 0 1 0 8 0 sockpl 448 5265 0 5238 85 73 12 18 0 8 8 mcl64k 65536 94 0 94 4 3 1 1 0 8 1 mcl16k 16384 29 0 29 5 4 1 1 0 8 1 mcl12k 12288 94 0 94 5 4 1 1 0 8 1 mcl9k 9216 99 0 99 5 4 1 1 0 8 1 mcl8k 8192 199 0 199 5 4 1 1 0 8 1 mcl4k 4096 331 0 331 2 1 1 1 0 8 1 mcl2k2 2112 17 0 17 7 7 0 1 0 8 0 mcl2k 2048 82513 0 82463 17 9 8 12 0 8 0 mtagpl 96 560 0 461 8 3 5 7 0 8 0 mbufpl 256 149969 0 149603 46 14 32 34 0 8 4 bufpl 288 8413 0 2007 458 0 458 458 0 8 0 anonpl 24 771364 0 751040 148 19 129 137 0 188 4 amapchunkpl 152 86248 0 85257 60 18 42 46 0 158 2 amappl16 200 7525 0 6833 63 26 37 46 0 8 0 amappl15 192 951 0 945 1 0 1 1 0 8 0 amappl14 184 1110 0 1101 1 0 1 1 0 8 0 amappl13 176 216 0 215 1 0 1 1 0 8 0 amappl12 168 82 0 79 2 1 1 1 0 8 0 amappl11 160 132 0 121 1 0 1 1 0 8 0 amappl10 152 242 0 235 1 0 1 1 0 8 0 amappl9 144 719 0 716 1 0 1 1 0 8 0 amappl8 136 1266 0 1195 3 0 3 3 0 8 0 amappl7 128 652 0 637 1 0 1 1 0 8 0 amappl6 120 469 0 449 2 1 1 2 0 8 0 amappl5 112 2194 0 2176 1 0 1 1 0 8 0 amappl4 104 1831 0 1801 2 0 2 2 0 8 0 amappl3 96 409 0 398 1 0 1 1 0 8 0 amappl2 88 800 0 753 3 1 2 3 0 8 0 amappl1 80 54761 0 54156 18 5 13 18 0 8 0 amappl 88 32774 0 32487 8 1 7 7 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 74 0 3 2 0 2 2 0 8 0 uaddrrnd 24 2908 0 2857 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2908 0 2857 1 0 1 1 0 8 0 vmmpekpl 168 24123 0 24071 3 0 3 3 0 8 0 vmmpepl 168 266699 0 263925 168 46 122 134 0 357 1 vmsppl 272 2907 0 2857 6 2 4 4 0 8 0 rwobjpl 24 69802 0 62096 47 0 47 47 0 8 0 pdppl 4096 5822 0 5736 242 156 86 86 0 8 0 pvpl 32 1381099 0 1356030 275 67 208 259 0 265 3 pmappl 216 2907 0 2857 3 0 3 3 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 1144 0 318 24 0 24 24 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(fffffd8068f30300,ffffffe6) at m_align+0x1a0 sys/kern/uipc_mbuf.c:1385 bpf_movein(ffff80002b39db80,ffff800000d03a00,ffff80002b39d8e8,ffff80002b39d7e8) at bpf_movein+0x25e sys/net/bpf.c:228 bpfwrite(21700,ffff80002b39db80,1) at bpfwrite+0x128 sys/net/bpf.c:648 spec_write(ffff80002b39d9e0) at spec_write+0xcb sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd8066ec48d8,ffff80002b39db80,1,fffffd807f7d88a0) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 vn_write(fffffd8075443d98,ffff80002b39db80,1) at vn_write+0x19c sys/kern/vfs_vnops.c:414 dofilewritev(ffff80002169e2a0,3,ffff80002b39db80,1,ffff80002b39dc80) at dofilewritev+0x19c sys/kern/sys_generic.c:381 sys_pad_pwrite(ffff80002169e2a0,ffff80002b39dc28,ffff80002b39dc80) at sys_pad_pwrite+0x92 sys_pwrite sys/kern/vfs_syscalls.c:3354 [inline] sys_pad_pwrite(ffff80002169e2a0,ffff80002b39dc28,ffff80002b39dc80) at sys_pad_pwrite+0x92 sys/kern/vfs_syscalls.c:3426 syscall(ffff80002b39dcf0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf466d311250, 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(fffffd8068f30300,ffffffe6) at m_align+0x1a0 sys/kern/uipc_mbuf.c:1385 bpf_movein(ffff80002b39db80,ffff800000d03a00,ffff80002b39d8e8,ffff80002b39d7e8) at bpf_movein+0x25e sys/net/bpf.c:228 bpfwrite(21700,ffff80002b39db80,1) at bpfwrite+0x128 sys/net/bpf.c:648 spec_write(ffff80002b39d9e0) at spec_write+0xcb sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd8066ec48d8,ffff80002b39db80,1,fffffd807f7d88a0) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 vn_write(fffffd8075443d98,ffff80002b39db80,1) at vn_write+0x19c sys/kern/vfs_vnops.c:414 dofilewritev(ffff80002169e2a0,3,ffff80002b39db80,1,ffff80002b39dc80) at dofilewritev+0x19c sys/kern/sys_generic.c:381 sys_pad_pwrite(ffff80002169e2a0,ffff80002b39dc28,ffff80002b39dc80) at sys_pad_pwrite+0x92 sys_pwrite sys/kern/vfs_syscalls.c:3354 [inline] sys_pad_pwrite(ffff80002169e2a0,ffff80002b39dc28,ffff80002b39dc80) at sys_pad_pwrite+0x92 sys/kern/vfs_syscalls.c:3426 syscall(ffff80002b39dcf0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf466d311250, count: -13