panic: kernel diagnostic assertion "len >= 0 && !M_READONLY(m)" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/uipc_mbuf.c", line 1384 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *431123 1768 0 0 0x4000000 1K syz-executor.4 210988 93628 0 0 0 0 syz-executor.6 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff82579a90) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff825ec6cc,ffffffff82560ab1,568,ffffffff8258f284) at __assert+0x25 sys/kern/subr_prf.c:161 m_align(fffffd807532e900,ffffffdc) at m_align+0x1a0 sys/kern/uipc_mbuf.c:1385 bpf_movein(ffff80002550a4e0,ffff800000ba5a00,ffff80002550a248,ffff80002550a148) at bpf_movein+0x25e sys/net/bpf.c:228 bpfwrite(31700,ffff80002550a4e0,1) at bpfwrite+0x169 sys/net/bpf.c:644 spec_write(ffff80002550a340) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd8065a62218,ffff80002550a4e0,1,fffffd807f7d8660) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 vn_write(fffffd8064a89610,ffff80002550a4e0,1) at vn_write+0x1a1 sys/kern/vfs_vnops.c:414 dofilewritev(ffff8000ffff5cf0,3,ffff80002550a4e0,1,ffff80002550a5e0) at dofilewritev+0x19c sys/kern/sys_generic.c:381 sys_pad_pwrite(ffff8000ffff5cf0,ffff80002550a588,ffff80002550a5e0) at sys_pad_pwrite+0x92 sys_pwrite sys/kern/vfs_syscalls.c:3354 [inline] sys_pad_pwrite(ffff8000ffff5cf0,ffff80002550a588,ffff80002550a5e0) at sys_pad_pwrite+0x92 sys/kern/vfs_syscalls.c:3426 syscall(ffff80002550a650) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002550a650) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x221bb430c60, 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: kernel diagnostic assertion "len >= 0 && !M_READONLY(m)" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/uipc_mbuf.c", line 1384 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff82579a90) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff825ec6cc,ffffffff82560ab1,568,ffffffff8258f284) at __assert+0x25 sys/kern/subr_prf.c:161 m_align(fffffd807532e900,ffffffdc) at m_align+0x1a0 sys/kern/uipc_mbuf.c:1385 bpf_movein(ffff80002550a4e0,ffff800000ba5a00,ffff80002550a248,ffff80002550a148) at bpf_movein+0x25e sys/net/bpf.c:228 bpfwrite(31700,ffff80002550a4e0,1) at bpfwrite+0x169 sys/net/bpf.c:644 spec_write(ffff80002550a340) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd8065a62218,ffff80002550a4e0,1,fffffd807f7d8660) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 vn_write(fffffd8064a89610,ffff80002550a4e0,1) at vn_write+0x1a1 sys/kern/vfs_vnops.c:414 dofilewritev(ffff8000ffff5cf0,3,ffff80002550a4e0,1,ffff80002550a5e0) at dofilewritev+0x19c sys/kern/sys_generic.c:381 sys_pad_pwrite(ffff8000ffff5cf0,ffff80002550a588,ffff80002550a5e0) at sys_pad_pwrite+0x92 sys_pwrite sys/kern/vfs_syscalls.c:3354 [inline] sys_pad_pwrite(ffff8000ffff5cf0,ffff80002550a588,ffff80002550a5e0) at sys_pad_pwrite+0x92 sys/kern/vfs_syscalls.c:3426 syscall(ffff80002550a650) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002550a650) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x221bb430c60, count: -13 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800025509f60 rbx 0xffff800020ce9bff rdx 0xffff800000bede00 rcx 0 rax 0xffff8000ffff5cf0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xda735a16095764ef r11 0x5496a4ad97a7f6b7 r12 0xffff800020ce9a00 r13 0 r14 0 r15 0x1 rip 0xffffffff82237da8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800025509f50 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.4) pid=431123 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=75, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff42b0,0xffff8000ffff4d40 process=0xffff8000ffff31f8 user=0xffff800025505000, vmspace=0xfffffd806a870e70 estcpu=36, cpticks=2, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 16774 214950 18842 0 2 0 syz-executor.1 16774 452589 18842 0 2 0x4000000 syz-executor.1 16774 213606 18842 0 2 0x4000000 syz-executor.1 16774 170686 18842 0 2 0x4000000 syz-executor.1 38798 343914 0 0 3 0x14280 nfsidl nfsio 18192 210399 0 0 3 0x14280 nfsidl nfsio 16853 317260 0 0 3 0x14280 nfsidl nfsio 6556 479347 0 0 3 0x14280 nfsidl nfsio 56460 272713 0 0 3 0x14280 nfsidl nfsio 4670 519 0 0 3 0x14280 nfsidl nfsio 4182 423384 0 0 3 0x14280 nfsidl nfsio 4960 217960 0 0 3 0x14280 nfsidl nfsio 45664 141630 0 0 3 0x14280 nfsidl nfsio 80633 229185 0 0 3 0x14280 nfsidl nfsio 93428 131478 0 0 3 0x14280 nfsidl nfsio 38977 241387 0 0 3 0x14280 nfsidl nfsio 16000 279369 0 0 3 0x14280 nfsidl nfsio 58299 36045 0 0 3 0x14280 nfsidl nfsio 96256 89487 0 0 3 0x14280 nfsidl nfsio 9161 489502 0 0 3 0x14280 nfsidl nfsio 12851 444953 0 0 3 0x14280 nfsidl nfsio 31160 372518 0 0 3 0x14280 nfsidl nfsio 97857 63398 0 0 3 0x14280 nfsidl nfsio 19589 89934 0 0 3 0x14280 nfsidl nfsio 1768 10987 51852 0 2 0 syz-executor.4 * 1768 431123 51852 0 7 0x4000000 syz-executor.4 93628 210988 67793 0 7 0 syz-executor.6 93628 43474 67793 0 2 0x4000000 syz-executor.6 40137 66613 20309 0 2 0 syz-executor.3 40137 258508 20309 0 3 0x4000080 fsleep syz-executor.3 51899 360495 73085 0 2 0 syz-executor.2 51899 452667 73085 0 3 0x4000080 ttyin syz-executor.2 39540 137331 89768 0 2 0 syz-executor.7 67997 96178 82133 0 2 0 syz-executor.5 67997 34744 82133 0 3 0x4000080 fsleep syz-executor.5 89768 254051 63273 0 2 0x2 syz-executor.7 51852 517398 63273 0 3 0x82 nanoslp syz-executor.4 67793 468489 63273 0 3 0x82 nanoslp syz-executor.6 82133 198412 63273 0 3 0x82 nanoslp syz-executor.5 73085 88730 63273 0 3 0x82 nanoslp syz-executor.2 20309 193611 63273 0 3 0x82 nanoslp syz-executor.3 18842 437517 63273 0 3 0x82 nanoslp syz-executor.1 31866 520832 63273 0 3 0x82 nanoslp syz-executor.0 63273 352261 80886 0 3 0x82 thrsleep syz-fuzzer 63273 265463 80886 0 3 0x4000082 thrsleep syz-fuzzer 63273 115919 80886 0 3 0x4000082 thrsleep syz-fuzzer 63273 424069 80886 0 3 0x4000082 thrsleep syz-fuzzer 63273 89795 80886 0 3 0x4000082 kqread syz-fuzzer 63273 347490 80886 0 3 0x4000082 thrsleep syz-fuzzer 63273 203616 80886 0 3 0x4000082 thrsleep syz-fuzzer 63273 430984 80886 0 3 0x4000082 thrsleep syz-fuzzer 63273 504090 80886 0 3 0x4000082 thrsleep syz-fuzzer 80886 470489 14484 0 3 0x10008a sigsusp ksh 14484 210118 24774 0 3 0x9a kqread sshd 13374 126207 1 0 3 0x100083 ttyin getty 24774 226315 1 0 3 0x88 kqread sshd 64073 257728 46853 74 3 0x100092 bpf pflogd 46853 269110 1 0 3 0x80 netio pflogd 8112 510480 25775 73 3 0x100090 kqread syslogd 25775 482948 1 0 3 0x100082 netio syslogd 30871 102031 1 0 3 0x100080 kqread resolvd 61676 62102 96547 77 3 0x100092 kqread dhcpleased 82807 521361 96547 77 3 0x100092 kqread dhcpleased 96547 291052 1 0 3 0x80 kqread dhcpleased 89709 522246 0 0 3 0x14200 bored smr 88491 105119 0 0 2 0x14200 zerothread 60166 3226 0 0 3 0x14200 aiodoned aiodoned 7523 505383 0 0 3 0x14200 syncer update 70406 286012 0 0 3 0x14200 cleaner cleaner 40659 177336 0 0 3 0x14200 reaper reaper 70751 95834 0 0 3 0x14200 pgdaemon pagedaemon 19456 433355 0 0 3 0x14200 bored viomb 26391 291809 0 0 3 0x40014200 acpi0 acpi0 70946 325237 0 0 3 0x40014200 idle1 58869 62506 0 0 3 0x14200 bored softnet 48272 196830 0 0 3 0x14200 bored systqmp 7206 439717 0 0 3 0x14200 bored systq 99485 368114 0 0 3 0x40014200 bored softclock 90016 91898 0 0 3 0x40014200 idle0 1 234439 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 1768 (syz-executor.4) thread 0xffff8000ffff5cf0 (431123) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82ac44c8) #0 witness_lock+0x44d #1 vn_write+0x42 sys/kern/vfs_vnops.c:399 #2 dofilewritev+0x19c sys/kern/sys_generic.c:381 #3 sys_pad_pwrite+0x92 sys_pwrite sys/kern/vfs_syscalls.c:3354 [inline] #3 sys_pad_pwrite+0x92 sys/kern/vfs_syscalls.c:3426 #4 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #4 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #5 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10326 6740K 6815K 78643K 11572 0 pcb 13 8K 8K 78643K 17 0 rtable 238 6K 7K 78643K 352 0 ifaddr 86 17K 17K 78643K 90 0 counters 56 35K 35K 78643K 56 0 ioctlops 0 0K 4K 78643K 1527 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1304 81K 82K 78643K 1348 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 1K 78643K 2 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 22 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 17 61K 85K 78643K 214 0 proc 67 87K 124K 78643K 528 0 subproc 104 6K 6K 78643K 104 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 99 6K 6K 78643K 99 0 ether_multi 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 49 228K 228K 78643K 49 0 exec 0 0K 2K 78643K 718 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 314 80K 81K 78643K 4321 0 UVM aobj 3 2K 2K 78643K 3 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 12 0K 1K 78643K 28 0 temp 89 4689K 4753K 78643K 4735 0 kqueue 12 18K 20K 78643K 25 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 33 0 30 1 0 1 1 0 8 0 rtentry 112 111 0 1 4 0 4 4 0 8 0 unpcb 136 53 0 38 1 0 1 1 0 8 0 syncache 296 4 0 4 1 1 0 1 0 8 0 tcpqe 32 59 0 59 1 0 1 1 0 8 1 tcpcb 736 22 0 17 2 0 2 2 0 8 1 arp 120 18 0 0 1 0 1 1 0 8 0 inpcb 304 84 0 77 2 0 2 2 0 8 1 nd6 48 24 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 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 20 0 0 1 0 1 1 0 8 0 pfstkey 112 20 0 0 1 0 1 1 0 8 0 pfstate 320 20 0 0 2 0 2 2 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 452 0 0 29 0 29 29 0 8 0 art_table 32 453 0 0 4 0 4 4 0 8 0 art_node 16 110 0 10 1 0 1 1 0 8 0 semupl 112 3 0 3 1 0 1 1 0 8 1 semapl 112 14 0 4 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1585 0 148 91 0 91 91 0 8 0 ffsino 272 1585 0 148 97 0 97 97 0 8 0 nchpl 144 1988 0 321 63 0 63 63 0 8 0 uvmvnodes 80 1759 0 0 36 0 36 36 0 8 0 vnodes 224 1759 0 0 104 0 104 104 0 8 0 namei 1024 7377 0 7377 2 1 1 2 0 8 1 percpumem 16 40 0 0 1 0 1 1 0 8 0 scxspl 216 6065 0 6065 2 1 1 2 0 8 1 plimitpl 152 34 0 17 1 0 1 1 0 8 0 sigapl 424 537 0 473 8 0 8 8 0 8 0 futexpl 64 1006 0 1004 1 0 1 1 0 8 0 knotepl 120 117 0 0 4 0 4 4 0 8 0 kqueuepl 216 24 0 16 1 0 1 1 0 8 0 pipepl 336 134 0 106 3 0 3 3 0 8 0 fdescpl 496 503 0 473 5 0 5 5 0 8 1 filepl 152 2063 0 1821 12 0 12 12 0 8 2 lockfpl 104 18 0 16 1 0 1 1 0 8 0 lockfspl 48 10 0 8 1 0 1 1 0 8 0 sessionpl 144 24 0 7 1 0 1 1 0 8 0 pgrppl 48 24 0 7 1 0 1 1 0 8 0 ucredpl 96 136 0 124 1 0 1 1 0 8 0 zombiepl 144 473 0 472 1 0 1 1 0 8 0 processpl 1064 537 0 472 5 0 5 5 0 8 0 procpl 672 718 0 637 7 0 7 7 0 8 0 sockpl 480 170 0 145 5 0 5 5 0 8 1 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 5 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 9 0 0 2 0 2 2 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 167 0 0 20 0 20 20 0 8 0 mtagpl 96 25 0 0 1 0 1 1 0 8 0 mbufpl 256 241 0 0 16 1 15 15 0 8 0 bufpl 288 3763 0 145 259 0 259 259 0 8 0 anonpl 24 94913 0 76829 116 4 112 112 0 186 1 amapchunkpl 152 9715 0 8852 40 2 38 38 0 158 1 amappl16 200 885 0 383 28 1 27 27 0 8 0 amappl15 192 108 0 102 1 0 1 1 0 8 0 amappl14 184 44 0 37 1 0 1 1 0 8 0 amappl13 176 104 0 100 1 0 1 1 0 8 0 amappl12 168 20 0 15 1 0 1 1 0 8 0 amappl11 160 66 0 49 1 0 1 1 0 8 0 amappl10 152 50 0 42 1 0 1 1 0 8 0 amappl9 144 472 0 469 1 0 1 1 0 8 0 amappl8 136 618 0 569 2 0 2 2 0 8 0 amappl7 128 164 0 148 1 0 1 1 0 8 0 amappl6 120 214 0 194 2 1 1 2 0 8 0 amappl5 112 280 0 262 1 0 1 1 0 8 0 amappl4 104 870 0 842 2 1 1 2 0 8 0 amappl3 96 216 0 202 1 0 1 1 0 8 0 amappl2 88 555 0 512 3 1 2 3 0 8 0 amappl1 80 12208 0 11620 19 5 14 19 0 8 1 amappl 88 3877 0 3627 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 503 0 473 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 503 0 473 1 0 1 1 0 8 0 vmmpekpl 168 8654 0 8602 3 0 3 3 0 8 0 vmmpepl 168 50397 0 47913 147 0 147 147 0 357 35 vmsppl 368 502 0 473 4 0 4 4 0 8 1 rwobjpl 56 14752 0 11511 46 0 46 46 0 8 0 pdppl 4096 1013 0 946 103 34 69 79 0 8 2 pvpl 32 298763 0 276098 259 6 253 258 0 265 69 pmappl 248 502 0 473 3 0 3 3 0 8 1 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 640 0 39 18 0 18 18 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff828ebff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2f kd_curproc sys/dev/kcov.c:578 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2f sys/dev/kcov.c:148 __mp_lock(ffffffff82ac42c0) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82ac42c0) at __mp_lock+0x133 sys/kern/kern_lock.c:147 softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x1f end of kernel end trace frame: 0x7f7ffffdaf40, count: 8 ddb{0}> trace x86_ipi_db(ffffffff828ebff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2f kd_curproc sys/dev/kcov.c:578 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2f sys/dev/kcov.c:148 __mp_lock(ffffffff82ac42c0) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82ac42c0) at __mp_lock+0x133 sys/kern/kern_lock.c:147 softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x1f end of kernel end trace frame: 0x7f7ffffdaf40, count: -7 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x18: addq $0x8,%rsp db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff82579a90) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff825ec6cc,ffffffff82560ab1,568,ffffffff8258f284) at __assert+0x25 sys/kern/subr_prf.c:161 m_align(fffffd807532e900,ffffffdc) at m_align+0x1a0 sys/kern/uipc_mbuf.c:1385 bpf_movein(ffff80002550a4e0,ffff800000ba5a00,ffff80002550a248,ffff80002550a148) at bpf_movein+0x25e sys/net/bpf.c:228 bpfwrite(31700,ffff80002550a4e0,1) at bpfwrite+0x169 sys/net/bpf.c:644 spec_write(ffff80002550a340) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd8065a62218,ffff80002550a4e0,1,fffffd807f7d8660) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 vn_write(fffffd8064a89610,ffff80002550a4e0,1) at vn_write+0x1a1 sys/kern/vfs_vnops.c:414 dofilewritev(ffff8000ffff5cf0,3,ffff80002550a4e0,1,ffff80002550a5e0) at dofilewritev+0x19c sys/kern/sys_generic.c:381 sys_pad_pwrite(ffff8000ffff5cf0,ffff80002550a588,ffff80002550a5e0) at sys_pad_pwrite+0x92 sys_pwrite sys/kern/vfs_syscalls.c:3354 [inline] sys_pad_pwrite(ffff8000ffff5cf0,ffff80002550a588,ffff80002550a5e0) at sys_pad_pwrite+0x92 sys/kern/vfs_syscalls.c:3426 syscall(ffff80002550a650) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002550a650) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x221bb430c60, count: 2 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff82579a90) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff825ec6cc,ffffffff82560ab1,568,ffffffff8258f284) at __assert+0x25 sys/kern/subr_prf.c:161 m_align(fffffd807532e900,ffffffdc) at m_align+0x1a0 sys/kern/uipc_mbuf.c:1385 bpf_movein(ffff80002550a4e0,ffff800000ba5a00,ffff80002550a248,ffff80002550a148) at bpf_movein+0x25e sys/net/bpf.c:228 bpfwrite(31700,ffff80002550a4e0,1) at bpfwrite+0x169 sys/net/bpf.c:644 spec_write(ffff80002550a340) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd8065a62218,ffff80002550a4e0,1,fffffd807f7d8660) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 vn_write(fffffd8064a89610,ffff80002550a4e0,1) at vn_write+0x1a1 sys/kern/vfs_vnops.c:414 dofilewritev(ffff8000ffff5cf0,3,ffff80002550a4e0,1,ffff80002550a5e0) at dofilewritev+0x19c sys/kern/sys_generic.c:381 sys_pad_pwrite(ffff8000ffff5cf0,ffff80002550a588,ffff80002550a5e0) at sys_pad_pwrite+0x92 sys_pwrite sys/kern/vfs_syscalls.c:3354 [inline] sys_pad_pwrite(ffff8000ffff5cf0,ffff80002550a588,ffff80002550a5e0) at sys_pad_pwrite+0x92 sys/kern/vfs_syscalls.c:3426 syscall(ffff80002550a650) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002550a650) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x221bb430c60, count: -13