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 *377957 50225 0 0 0x4000000 0K syz-executor.0 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff825739a5) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff825e91ae,ffffffff8255ddc0,568,ffffffff8258c38b) at __assert+0x25 sys/kern/subr_prf.c:161 m_align(fffffd807caad700,ffffffc1) at m_align+0x1a0 sys/kern/uipc_mbuf.c:1385 bpf_movein(ffff80002e3ccd30,ffff800000d76e00,ffff80002e3cca98,ffff80002e3cc998) at bpf_movein+0x25e sys/net/bpf.c:228 bpfwrite(51700,ffff80002e3ccd30,15) at bpfwrite+0x169 sys/net/bpf.c:648 spec_write(ffff80002e3ccb90) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd807542a348,ffff80002e3ccd30,15,fffffd807f7d8660) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 vn_write(fffffd806903bb68,ffff80002e3ccd30,1) at vn_write+0x1a1 sys/kern/vfs_vnops.c:414 dofilewritev(ffff800023a82fc8,3,ffff80002e3ccd30,1,ffff80002e3cce30) at dofilewritev+0x19c sys/kern/sys_generic.c:381 sys_pad_pwrite(ffff800023a82fc8,ffff80002e3ccdd8,ffff80002e3cce30) at sys_pad_pwrite+0x92 sys_pwrite sys/kern/vfs_syscalls.c:3354 [inline] sys_pad_pwrite(ffff800023a82fc8,ffff80002e3ccdd8,ffff80002e3cce30) at sys_pad_pwrite+0x92 sys/kern/vfs_syscalls.c:3426 syscall(ffff80002e3ccea0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002e3ccea0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa2dd6c10090, 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: kernel diagnostic assertion "len >= 0 && !M_READONLY(m)" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/uipc_mbuf.c", line 1384 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff825739a5) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff825e91ae,ffffffff8255ddc0,568,ffffffff8258c38b) at __assert+0x25 sys/kern/subr_prf.c:161 m_align(fffffd807caad700,ffffffc1) at m_align+0x1a0 sys/kern/uipc_mbuf.c:1385 bpf_movein(ffff80002e3ccd30,ffff800000d76e00,ffff80002e3cca98,ffff80002e3cc998) at bpf_movein+0x25e sys/net/bpf.c:228 bpfwrite(51700,ffff80002e3ccd30,15) at bpfwrite+0x169 sys/net/bpf.c:648 spec_write(ffff80002e3ccb90) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd807542a348,ffff80002e3ccd30,15,fffffd807f7d8660) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 vn_write(fffffd806903bb68,ffff80002e3ccd30,1) at vn_write+0x1a1 sys/kern/vfs_vnops.c:414 dofilewritev(ffff800023a82fc8,3,ffff80002e3ccd30,1,ffff80002e3cce30) at dofilewritev+0x19c sys/kern/sys_generic.c:381 sys_pad_pwrite(ffff800023a82fc8,ffff80002e3ccdd8,ffff80002e3cce30) at sys_pad_pwrite+0x92 sys_pwrite sys/kern/vfs_syscalls.c:3354 [inline] sys_pad_pwrite(ffff800023a82fc8,ffff80002e3ccdd8,ffff80002e3cce30) at sys_pad_pwrite+0x92 sys/kern/vfs_syscalls.c:3426 syscall(ffff80002e3ccea0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002e3ccea0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa2dd6c10090, count: -13 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002e3cc7b0 rbx 0xffffffff82920bff cpu_info_full_primary+0x2bff rdx 0xffff800000c128c0 rcx 0 rax 0xffff800023a82fc8 r8 0 r9 0x8080808080808080 r10 0x58d5a34c4bc36c7e r11 0x7649af6f349917ac r12 0xffffffff82920a00 cpu_info_full_primary+0x2a00 r13 0 r14 0 r15 0x1 rip 0xffffffff8147cfe8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80002e3cc7a0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.0) pid=377957 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=83, nice=20 forw=0xffffffffffffffff, list=0xffff800023a83268,0xffff800023a83cf8 process=0xffff8000ffff9d20 user=0xffff80002e3c7000, vmspace=0xfffffd80688dbb98 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 45076 187853 95203 0 2 0 syz-executor.6 45076 47919 95203 0 3 0x4000080 fsleep syz-executor.6 94401 460248 20377 0 2 0 syz-executor.2 94401 390391 20377 0 3 0x4000080 fsleep syz-executor.2 50225 114476 22910 0 2 0 syz-executor.0 *50225 377957 22910 0 7 0x4000000 syz-executor.0 79896 392588 98967 0 2 0 syz-executor.5 79896 496771 98967 0 3 0x4000080 fsleep syz-executor.5 23078 522768 40076 0 2 0 syz-executor.1 23078 262220 40076 0 3 0x4000080 fsleep syz-executor.1 58337 448805 46072 0 2 0 syz-executor.4 58337 410276 46072 0 3 0x4000080 fsleep syz-executor.4 84917 422028 48696 0 2 0 syz-executor.7 84917 495103 48696 0 3 0x4000080 fsleep syz-executor.7 48696 137150 32175 0 3 0x82 nanoslp syz-executor.7 40076 193989 32175 0 3 0x82 nanoslp syz-executor.1 98967 175833 32175 0 3 0x82 nanoslp syz-executor.5 20377 372484 32175 0 3 0x82 nanoslp syz-executor.2 1455 464660 32175 0 2 0x2 syz-executor.3 96776 241244 1 0 3 0x100083 ttyin getty 22910 320679 32175 0 2 0x482 syz-executor.0 79503 81702 0 0 3 0x14200 bored sosplice 95203 76543 32175 0 3 0x82 nanoslp syz-executor.6 46072 85374 32175 0 2 0x482 syz-executor.4 32175 443724 58670 0 3 0x82 nanoslp syz-fuzzer 32175 18745 58670 0 3 0x4000082 nanoslp syz-fuzzer 32175 32282 58670 0 3 0x4000082 thrsleep syz-fuzzer 32175 474030 58670 0 3 0x4000082 thrsleep syz-fuzzer 32175 49278 58670 0 3 0x4000082 thrsleep syz-fuzzer 32175 209693 58670 0 3 0x4000082 thrsleep syz-fuzzer 32175 193676 58670 0 3 0x4000082 kqread syz-fuzzer 32175 282601 58670 0 3 0x4000082 thrsleep syz-fuzzer 32175 349868 58670 0 3 0x4000082 thrsleep syz-fuzzer 32175 21270 58670 0 3 0x4000082 thrsleep syz-fuzzer 58670 78290 11364 0 3 0x10008a sigsusp ksh 11364 87104 62201 0 3 0x9a kqread sshd 62201 121354 1 0 3 0x88 kqread sshd 40792 404135 23131 74 3 0x100092 bpf pflogd 23131 73186 1 0 3 0x80 netio pflogd 24087 408294 77178 73 3 0x100090 kqread syslogd 77178 298864 1 0 3 0x100082 netio syslogd 73444 351498 1 0 3 0x100080 kqread resolvd 74145 341363 6690 77 3 0x100092 kqread dhcpleased 97887 310422 6690 77 3 0x100092 kqread dhcpleased 6690 273965 1 0 3 0x80 kqread dhcpleased 48981 43895 0 0 3 0x14200 bored smr 63793 493621 0 0 2 0x14200 zerothread 39590 386732 0 0 3 0x14200 aiodoned aiodoned 53104 213545 0 0 3 0x14200 syncer update 33619 491788 0 0 3 0x14200 cleaner cleaner 19062 377163 0 0 3 0x14200 reaper reaper 74311 250499 0 0 3 0x14200 pgdaemon pagedaemon 99575 469216 0 0 3 0x14200 bored viomb 92912 205035 0 0 3 0x40014200 acpi0 acpi0 77672 442487 0 0 7 0x40014200 idle1 31984 408516 0 0 3 0x14200 bored softnet 72465 166579 0 0 3 0x14200 bored systqmp 17753 142217 0 0 3 0x14200 bored systq 75177 86330 0 0 2 0x40014200 softclock 31958 240579 0 0 3 0x40014200 idle0 1 261674 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 50225 (syz-executor.0) thread 0xffff800023a82fc8 (377957) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82a3d4a8) #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 Process 1455 (syz-executor.3) thread 0xffff80002327ca88 (464660) exclusive rrwlock inode r = 0 (0xfffffd807cbfd700) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 vget+0x1d3 sys/kern/vfs_subr.c:677 #6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1318 #8 ufs_lookup+0x13ba sys/ufs/ufs/ufs_lookup.c:487 #9 VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:561 #11 namei+0x36a sys/kern/vfs_lookup.c:245 #12 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1849 #13 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #13 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806c4d2928) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 vfs_lookup+0xd1 sys/kern/vfs_lookup.c:413 #6 namei+0x36a sys/kern/vfs_lookup.c:245 #7 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1849 #8 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10228 6638K 7024K 78643K 26432 0 pcb 13 18K 20K 78643K 1224 0 rtable 256 26K 30K 78643K 3537 0 ifaddr 104 25K 27K 78643K 2026 0 sysctl 2 0K 1K 78643K 37 0 counters 56 35K 36K 78643K 290 0 ioctlops 0 0K 6K 78643K 4465 0 iov 0 0K 16K 78643K 889 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1395 87K 88K 78643K 8444 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 96 0 VM map 2 1K 1K 78643K 2 0 sem 12 11K 11K 78643K 14 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 17 61K 85K 78643K 10017 0 sigio 0 0K 0K 78643K 183 0 proc 71 87K 111K 78643K 1730 0 subproc 104 6K 6K 78643K 498 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 363 0 in_multi 83 5K 6K 78643K 676 0 ether_multi 1 0K 0K 78643K 75 0 mrt 1 0K 0K 78643K 27 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 193 864K 864K 78643K 193 0 exec 0 0K 2K 78643K 2307 0 pfkey data 0 0K 1K 78643K 2 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 536 666K 682K 78643K 127411 0 UVM aobj 131 4K 4K 78643K 152 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 433 0 NDP 13 0K 2K 78643K 220 0 temp 151 4727K 4799K 78643K 73581 0 kqueue 12 18K 26K 78643K 717 0 SYN cache 2 8K 16K 78643K 3 0 ddb{0}> 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 120 560 0 556 8 7 1 3 0 8 0 rtentry 112 627 0 539 4 0 4 4 0 8 0 unpcb 136 7167 0 7152 73 72 1 6 0 8 0 syncache 296 15 0 15 5 5 0 1 0 8 0 tcpqe 32 5 0 5 2 2 0 1 0 8 0 tcpcb 736 3186 0 3182 111 109 2 11 0 8 1 arp 120 86 0 69 1 0 1 1 0 8 0 inpcb 304 8537 0 8530 155 153 2 11 0 8 1 rttmr 72 8 0 8 3 3 0 1 0 8 0 nd6 48 142 0 121 1 0 1 1 0 8 0 pkpcb 40 46 0 46 4 4 0 1 0 8 0 kcovpl 48 37 0 29 1 0 1 1 0 8 0 ppxss 1248 51 0 51 12 12 0 1 0 8 0 pfstscr 40 79 0 79 3 3 0 1 0 8 0 pffrag 232 76 0 73 5 4 1 1 0 482 0 pffrnode 88 76 0 73 5 4 1 1 0 8 0 pffrent 40 284 0 281 5 4 1 1 0 8 0 pfosfp 40 1429 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1429 0 714 21 0 21 21 0 8 0 pfrke_plain 168 24 0 20 1 0 1 1 0 8 0 pfrktable 1344 777 0 755 4 2 2 3 0 8 0 pftag 88 177 0 170 2 1 1 1 0 8 0 pfqueue 264 4 0 3 2 1 1 1 0 8 0 pfstitem 24 80 0 78 1 0 1 1 0 8 0 pfstkey 112 222 0 220 1 0 1 1 0 8 0 pfstate 320 147 0 145 3 2 1 3 0 8 0 pfrule 1360 786 0 682 14 5 9 9 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 2605 0 2214 43 15 28 31 0 8 0 art_table 32 2606 0 2214 4 0 4 4 0 8 0 art_node 16 559 0 479 1 0 1 1 0 8 0 sysvmsgpl 40 83 0 43 1 0 1 1 0 8 0 semapl 112 10 0 0 1 0 1 1 0 8 0 shmpl 112 149 0 21 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 16446 0 14991 92 0 92 92 0 8 0 ffsino 272 16446 0 14991 98 0 98 98 0 8 0 nchpl 144 29816 0 28189 63 0 63 63 0 8 0 rtmask 32 40 0 38 4 3 1 1 0 8 0 uvmvnodes 80 5927 0 0 121 0 121 121 0 8 0 vnodes 224 5927 0 0 349 0 349 349 0 8 0 namei 1024 118231 0 118231 16 15 1 2 0 8 1 percpumem 16 157 0 117 1 0 1 1 0 8 0 vcpupl 2048 171 0 0 22 0 22 22 0 8 0 vmpool 560 179 0 8 13 0 13 13 0 8 0 pfiaddrpl 120 392 0 362 3 2 1 1 0 8 0 scsiplug 72 5 0 5 2 1 1 1 0 8 1 scxspl 216 95755 0 95755 26 25 1 8 0 8 1 plimitpl 152 1491 0 1475 1 0 1 1 0 8 0 sigapl 424 10287 0 10242 8 1 7 8 0 8 0 futexpl 64 92222 0 92216 8 7 1 1 0 8 0 knotepl 120 516 0 0 10 2 8 10 0 8 0 kqueuepl 216 2345 0 2337 38 33 5 6 0 8 4 pipepl 336 2620 0 2592 76 73 3 13 0 8 0 fdescpl 496 10249 0 10219 5 1 4 5 0 8 0 filepl 152 82397 0 82149 136 122 14 19 0 8 2 lockfpl 104 3835 0 3832 9 8 1 3 0 8 0 lockfspl 48 1072 0 1069 1 0 1 1 0 8 0 sessionpl 144 54 0 37 1 0 1 1 0 8 0 pgrppl 48 197 0 180 1 0 1 1 0 8 0 ucredpl 96 24073 0 24060 1 0 1 1 0 8 0 zombiepl 144 10242 0 10242 4 3 1 1 0 8 1 processpl 1064 10287 0 10242 5 0 5 5 0 8 0 procpl 672 28197 0 28136 27 20 7 9 0 8 0 srpgc 96 37 0 37 8 8 0 1 0 8 0 sosppl 168 79 0 79 11 11 0 1 0 8 0 sockpl 480 16320 0 16294 374 366 8 29 0 8 4 mcl64k 65536 19 0 0 3 1 2 3 0 8 0 mcl16k 16384 23 0 0 3 1 2 3 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 15 0 0 2 0 2 2 0 8 0 mcl8k 8192 33 0 0 5 3 2 3 0 8 0 mcl4k 4096 25 0 0 3 1 2 3 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 444 0 0 30 6 24 29 0 8 1 mtagpl 96 939 0 0 19 0 19 19 0 8 0 mbufpl 256 1507 0 0 72 0 72 72 0 8 0 bufpl 288 20873 0 14535 455 1 454 454 0 8 0 anonpl 24 2921688 0 2898445 298 149 149 177 0 186 0 amapchunkpl 152 318150 0 317183 152 113 39 54 0 158 0 amappl16 200 27987 0 27234 130 89 41 53 0 8 0 amappl15 192 2470 0 2462 1 0 1 1 0 8 0 amappl14 184 1242 0 1235 1 0 1 1 0 8 0 amappl13 176 1309 0 1306 1 0 1 1 0 8 0 amappl12 168 426 0 420 1 0 1 1 0 8 0 amappl11 160 2293 0 2277 1 0 1 1 0 8 0 amappl10 152 817 0 811 1 0 1 1 0 8 0 amappl9 144 1020 0 1018 1 0 1 1 0 8 0 amappl8 136 3503 0 3370 5 0 5 5 0 8 0 amappl7 128 2368 0 2352 1 0 1 1 0 8 0 amappl6 120 860 0 826 5 3 2 2 0 8 0 amappl5 112 8385 0 8364 1 0 1 1 0 8 0 amappl4 104 5878 0 5846 2 1 1 2 0 8 0 amappl3 96 1370 0 1354 1 0 1 1 0 8 0 amappl2 88 2734 0 2666 4 2 2 3 0 8 0 amappl1 80 185561 0 184951 28 14 14 19 0 8 0 amappl 88 126224 0 125888 11 2 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 72 151 0 21 3 0 3 3 0 8 0 uaddrrnd 24 10428 0 10227 2 0 2 2 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 10428 0 10227 2 0 2 2 0 8 0 vmmpekpl 168 79994 0 79922 5 0 5 5 0 8 0 vmmpepl 168 939279 0 936059 324 174 150 171 0 357 0 vmsppl 368 10427 0 10227 20 1 19 19 0 8 0 rwobjpl 56 229247 0 221274 130 17 113 116 0 8 0 pdppl 4096 20863 0 20625 758 518 240 242 0 8 2 pvpl 32 5001232 0 4974757 607 389 218 278 0 265 2 pmappl 248 10427 0 10227 14 1 13 13 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 1828 0 751 32 0 32 32 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff825739a5) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff825e91ae,ffffffff8255ddc0,568,ffffffff8258c38b) at __assert+0x25 sys/kern/subr_prf.c:161 m_align(fffffd807caad700,ffffffc1) at m_align+0x1a0 sys/kern/uipc_mbuf.c:1385 bpf_movein(ffff80002e3ccd30,ffff800000d76e00,ffff80002e3cca98,ffff80002e3cc998) at bpf_movein+0x25e sys/net/bpf.c:228 bpfwrite(51700,ffff80002e3ccd30,15) at bpfwrite+0x169 sys/net/bpf.c:648 spec_write(ffff80002e3ccb90) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd807542a348,ffff80002e3ccd30,15,fffffd807f7d8660) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 vn_write(fffffd806903bb68,ffff80002e3ccd30,1) at vn_write+0x1a1 sys/kern/vfs_vnops.c:414 dofilewritev(ffff800023a82fc8,3,ffff80002e3ccd30,1,ffff80002e3cce30) at dofilewritev+0x19c sys/kern/sys_generic.c:381 sys_pad_pwrite(ffff800023a82fc8,ffff80002e3ccdd8,ffff80002e3cce30) at sys_pad_pwrite+0x92 sys_pwrite sys/kern/vfs_syscalls.c:3354 [inline] sys_pad_pwrite(ffff800023a82fc8,ffff80002e3ccdd8,ffff80002e3cce30) at sys_pad_pwrite+0x92 sys/kern/vfs_syscalls.c:3426 syscall(ffff80002e3ccea0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002e3ccea0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa2dd6c10090, count: -13 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020ce8ff0) 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 acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800020ce8ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff800020ce8ff0) 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 acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800020ce8ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: -5