load: 3.60 cmd: load: 3.60 cmd: panic: pool_cache_item_magic_check: mbufpl cpu free list modified: item addr 0xfffffd8063cc2600+16 0x0!=0x34e7516445a08643 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *102916 67860 0 0x12 0 1 sshd 269273 40530 0 0x14000 0x200 0 softnet db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff8240ef1a) at panic+0x164 sys/kern/subr_prf.c:218 pool_cache_get(ffffffff82933910) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline] pool_cache_get(ffffffff82933910) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884 pool_get(ffffffff82933910,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_copym(fffffd8063cc2200,b00,104,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] m_copym(fffffd8063cc2200,b00,104,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667 tcp_output(ffff800000adb4d0) at tcp_output+0x15ba sys/netinet/tcp_output.c:673 tcp_usrreq(fffffd806eaeaaf8,9,fffffd8063cc2200,0,0,ffff8000ffffe288) at tcp_usrreq+0xa55 sosend(fffffd806eaeaaf8,0,ffff800020e60838,0,0,80) at sosend+0x671 sys/kern/uipc_socket.c:555 dofilewritev(ffff8000ffffe288,4,ffff800020e60838,0,ffff800020e60920) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_write(ffff8000ffffe288,ffff800020e608d0,ffff800020e60920) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800020e609a0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e609a0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcae40, count: 3 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 pool_cache_item_magic_check: mbufpl cpu free list modified: item addr 0xfffffd8063cc2600+16 0x0!=0x34e7516445a08643 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff8240ef1a) at panic+0x164 sys/kern/subr_prf.c:218 pool_cache_get(ffffffff82933910) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline] pool_cache_get(ffffffff82933910) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884 pool_get(ffffffff82933910,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_copym(fffffd8063cc2200,b00,104,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] m_copym(fffffd8063cc2200,b00,104,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667 tcp_output(ffff800000adb4d0) at tcp_output+0x15ba sys/netinet/tcp_output.c:673 tcp_usrreq(fffffd806eaeaaf8,9,fffffd8063cc2200,0,0,ffff8000ffffe288) at tcp_usrreq+0xa55 sosend(fffffd806eaeaaf8,0,ffff800020e60838,0,0,80) at sosend+0x671 sys/kern/uipc_socket.c:555 dofilewritev(ffff8000ffffe288,4,ffff800020e60838,0,ffff800020e60920) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_write(ffff8000ffffe288,ffff800020e608d0,ffff800020e60920) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800020e609a0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e609a0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcae40, count: -12 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800020e601d0 rbx 0xffff800020e60280 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffff800020e60190 r9 0xffffffff8108ddff kprintf+0x16f r10 0x1 r11 0x23b3e37c5e6981a r12 0x3000000008 r13 0xffff800020e601e0 r14 0x100 r15 0x1 rip 0xffffffff822b91e8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020e601c0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (sshd) pid=102916 stat=onproc flags process=12 proc=0 pri=50, usrpri=51, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffffe778,0xffff8000fffff8d0 process=0xffff8000ffffc000 user=0xffff800020e5b000, vmspace=0xfffffd806e8f8b88 estcpu=1, cpticks=4, pctcpu=0.0 user=0, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 80266 242925 47776 0 3 0x82 nanosleep syz-executor.0 3004 516014 0 0 3 0x14200 bored sosplice 60908 76282 47776 0 3 0x2 biowait syz-executor.1 47776 522523 89640 0 3 0x82 thrsleep syz-fuzzer 47776 415499 89640 0 3 0x4000082 nanosleep syz-fuzzer 47776 70001 89640 0 3 0x4000082 thrsleep syz-fuzzer 47776 82463 89640 0 3 0x4000082 thrsleep syz-fuzzer 47776 244105 89640 0 3 0x4000082 thrsleep syz-fuzzer 47776 470503 89640 0 3 0x4000082 thrsleep syz-fuzzer 47776 350527 89640 0 3 0x4000082 kqread syz-fuzzer 47776 160934 89640 0 3 0x4000082 nanosleep syz-fuzzer 89640 106799 67860 0 3 0x10008a pause ksh *67860 102916 53377 0 7 0x12 sshd 47079 139730 1 0 3 0x100083 ttyin getty 53377 356603 1 0 3 0x80 select sshd 42794 311292 98877 74 3 0x100092 bpf pflogd 98877 24412 1 0 3 0x80 netio pflogd 3948 47575 99459 73 3 0x100090 kqread syslogd 99459 519295 1 0 3 0x100082 netio syslogd 43273 497405 1 77 3 0x100090 poll dhclient 36418 53109 1 0 3 0x80 poll dhclient 71333 241223 0 0 3 0x14200 bored smr 55231 409759 0 0 3 0x14200 pgzero zerothread 90960 286607 0 0 3 0x14200 aiodoned aiodoned 46865 248669 0 0 3 0x14200 syncer update 99732 348613 0 0 3 0x14200 cleaner cleaner 59769 343257 0 0 3 0x14200 reaper reaper 58437 360860 0 0 3 0x14200 pgdaemon pagedaemon 46927 483739 0 0 3 0x14200 bored crynlk 54573 191585 0 0 3 0x14200 bored crypto 93718 509602 0 0 3 0x40014200 acpi0 acpi0 92181 460670 0 0 3 0x40014200 idle1 40530 269273 0 0 7 0x14200 softnet 13995 239315 0 0 3 0x14200 bored systqmp 8994 157184 0 0 3 0x14200 bored systq 88997 389535 0 0 3 0x40014200 bored softclock 7879 290152 0 0 3 0x40014200 idle0 1 86670 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 60908 (syz-executor.1) thread 0xffff800020eb3160 (76282) exclusive rrwlock inode r = 0 (0xfffffd806e2df4d8) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 rw_enter+0x453 sys/kern/kern_rwlock.c:311 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:603 #4 vn_lock+0x81 sys/kern/vfs_vnops.c:575 #5 vget+0x1c8 sys/kern/vfs_subr.c:671 #6 ufs_ihashget+0x141 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x74 sys/ufs/ffs/ffs_vfsops.c:1329 #8 ufs_lookup+0x14b7 sys/ufs/ufs/ufs_lookup.c:487 #9 VOP_LOOKUP+0x5b sys/kern/vfs_vops.c:90 #10 vfs_lookup+0x7a6 sys/kern/vfs_lookup.c:568 #11 namei+0x63c sys/kern/vfs_lookup.c:249 #12 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1853 #13 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #13 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806e2df808) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 rw_enter+0x453 sys/kern/kern_rwlock.c:311 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:603 #4 vn_lock+0x81 sys/kern/vfs_vnops.c:575 #5 vget+0x1c8 sys/kern/vfs_subr.c:671 #6 cache_lookup+0x2bb sys/kern/vfs_cache.c:224 #7 ufs_lookup+0x1bc sys/ufs/ufs/ufs_lookup.c:162 #8 VOP_LOOKUP+0x5b sys/kern/vfs_vops.c:90 #9 vfs_lookup+0x7a6 sys/kern/vfs_lookup.c:568 #10 namei+0x63c sys/kern/vfs_lookup.c:249 #11 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1853 #12 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #12 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #13 Xsyscall+0x128 Process 67860 (sshd) thread 0xffff8000ffffe288 (102916) exclusive rwlock netlock r = 0 (0xffffffff827713e0) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 solock+0x5a sys/kern/uipc_socket2.c:282 #2 sosend+0x559 sys/kern/uipc_socket.c:543 #3 dofilewritev+0x1b6 sys/kern/sys_generic.c:365 #4 sys_write+0x83 sys/kern/sys_generic.c:285 #5 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #5 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #6 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9523 6549K 6917K 78643K 11462 0 pcb 13 8K 8K 78643K 106 0 rtable 105 5K 9K 78643K 543 0 ifaddr 79 16K 17K 78643K 186 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 63 0 ioctlops 0 0K 4K 78643K 1628 0 iov 0 0K 16K 78643K 67 0 mount 1 1K 1K 78643K 1 0 vnodes 1226 77K 77K 78643K 1636 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 7 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 151 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 4 9K 25K 78643K 788 0 proc 63 63K 95K 78643K 583 0 subproc 32 2K 2K 78643K 68 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 53 0 in_multi 77 4K 4K 78643K 173 0 ether_multi 1 0K 0K 78643K 11 0 mrt 0 0K 0K 78643K 5 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 61 281K 281K 78643K 61 0 exec 0 0K 1K 78643K 277 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 172 59K 59K 78643K 3542 0 UVM aobj 20 2K 2K 78643K 30 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 83 0 NDP 11 0K 0K 78643K 37 0 temp 136 3886K 3952K 78643K 16102 0 kqueue 3 4K 14K 78643K 27 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 arp 64 13 0 7 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 88 59 0 57 1 0 1 1 0 8 0 rtentry 112 106 0 69 2 0 2 2 0 8 0 unpcb 120 514 0 504 1 0 1 1 0 8 0 syncache 272 8 0 8 3 3 0 1 0 8 0 tcpqe 32 108 0 108 2 2 0 1 0 8 0 tcpcb 592 223 0 213 4 2 2 2 0 8 0 inpcb 296 1261 0 1254 6 4 2 2 0 8 1 rttmr 72 2 0 2 1 1 0 1 0 8 0 nd6 48 31 0 24 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 ppxss 1136 1 0 1 1 1 0 1 0 8 0 pfstscr 40 2 0 2 1 0 1 1 0 8 1 pffrag 232 5 0 5 3 3 0 1 0 482 0 pffrnode 88 5 0 5 3 3 0 1 0 8 0 pffrent 40 98 0 98 3 3 0 1 0 8 0 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 41 0 38 1 0 1 1 0 8 0 pftag 88 5 0 3 1 0 1 1 0 8 0 pfstitem 24 16 0 12 1 0 1 1 0 8 0 pfstkey 112 20 0 16 1 0 1 1 0 8 0 pfstate 328 18 0 14 2 0 2 2 0 8 0 pfrule 1360 47 0 30 3 1 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 520 0 335 16 4 12 16 0 8 0 art_table 32 521 0 335 3 1 2 3 0 8 0 art_node 16 105 0 74 1 0 1 1 0 8 0 sysvmsgpl 40 18 0 4 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 147 0 137 1 0 1 1 0 8 0 shmpl 112 27 0 10 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2466 0 1060 89 0 89 89 0 8 0 ffsino 272 2466 0 1060 94 0 94 94 0 8 0 nchpl 144 3716 0 2119 60 0 60 60 0 8 0 uvmvnodes 72 2733 0 0 50 0 50 50 0 8 0 vnodes 208 2733 0 0 144 0 144 144 0 8 0 namei 1024 12000 0 12000 4 3 1 1 0 8 1 percpumem 16 42 0 10 1 0 1 1 0 8 0 vcpupl 1984 4 0 0 1 0 1 1 0 8 0 vmpool 560 8 0 4 1 0 1 1 0 8 0 pfiaddrpl 120 14 0 10 1 0 1 1 0 8 0 scxspl 200 10442 0 10441 12 10 2 7 0 8 1 plimitpl 152 65 0 57 1 0 1 1 0 8 0 sigapl 424 998 0 967 4 0 4 4 0 8 0 futexpl 56 10569 0 10569 4 3 1 1 0 8 1 knotepl 112 122 0 102 1 0 1 1 0 8 0 kqueuepl 152 120 0 118 1 0 1 1 0 8 0 pipepl 304 212 0 201 4 2 2 2 0 8 1 fdescpl 496 982 0 967 6 3 3 3 0 8 1 filepl 152 7073 0 6970 8 2 6 6 0 8 2 lockfpl 104 198 0 197 1 0 1 1 0 8 0 lockfspl 48 62 0 61 1 0 1 1 0 8 0 sessionpl 120 20 0 9 1 0 1 1 0 8 0 pgrppl 48 34 0 23 1 0 1 1 0 8 0 ucredpl 96 1875 0 1866 1 0 1 1 0 8 0 zombiepl 144 967 0 966 2 1 1 1 0 8 0 processpl 1008 998 0 966 5 0 5 5 0 8 0 procpl 632 2609 0 2570 4 0 4 4 0 8 0 srpgc 72 1 0 1 1 1 0 1 0 8 0 sosppl 144 23 0 23 4 3 1 1 0 8 1 sockpl 400 1836 0 1817 8 3 5 5 0 8 3 mcl64k 65536 8 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 11 0 0 2 0 2 2 0 8 0 mcl9k 9216 8 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 12 0 0 2 0 2 2 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 185 0 0 23 0 23 23 0 8 0 mtagpl 96 47 0 0 2 0 2 2 0 8 0 mbufpl 256 573 0 0 34 0 34 34 0 8 0 bufpl 280 4616 0 133 321 0 321 321 0 8 0 anonpl 16 113072 0 94699 92 13 79 85 0 124 0 amapchunkpl 152 6425 0 6125 37 24 13 26 0 158 0 amappl16 192 4158 0 3260 48 2 46 47 0 8 0 amappl15 184 359 0 357 1 0 1 1 0 8 0 amappl14 176 15 0 12 1 0 1 1 0 8 0 amappl13 168 46 0 42 1 0 1 1 0 8 0 amappl12 160 23 0 18 1 0 1 1 0 8 0 amappl11 152 62 0 46 1 0 1 1 0 8 0 amappl10 144 15 0 13 1 0 1 1 0 8 0 amappl9 136 733 0 731 1 0 1 1 0 8 0 amappl8 128 789 0 745 2 0 2 2 0 8 0 amappl7 120 126 0 114 1 0 1 1 0 8 0 amappl6 112 37 0 29 1 0 1 1 0 8 0 amappl5 104 878 0 862 1 0 1 1 0 8 0 amappl4 96 515 0 487 1 0 1 1 0 8 0 amappl3 88 156 0 147 1 0 1 1 0 8 0 amappl2 80 7101 0 7039 2 0 2 2 0 8 0 amappl1 72 38536 0 38107 23 13 10 18 0 8 0 amappl 80 2946 0 2865 2 0 2 2 0 84 0 dma4096 4096 1 0 1 1 1 0 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 64 29 0 10 1 0 1 1 0 8 0 uaddrrnd 24 990 0 971 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 990 0 971 1 0 1 1 0 8 0 vmmpekpl 168 11495 0 11465 2 0 2 2 0 8 0 vmmpepl 168 133584 0 131561 158 29 129 129 0 357 29 vmsppl 368 989 0 971 2 0 2 2 0 8 0 pdppl 4096 1987 0 1946 7 1 6 6 0 8 0 pvpl 32 344768 0 323572 213 30 183 198 0 265 0 pmappl 232 989 0 971 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 294 0 17 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff82785ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff82933140) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82933140) at __mp_lock+0x127 sys/kern/kern_lock.c:147 if_qstart_compat(ffff80000017c538) at if_qstart_compat+0x1a sys/net/if.c:675 ifq_serialize(ffff80000017c538,ffff80000017c658) at ifq_serialize+0x173 sys/net/ifq.c:113 taskq_thread(ffff80000002c000) at taskq_thread+0xfa sys/kern/kern_task.c:449 end trace frame: 0x0, count: 8 ddb{0}> trace x86_ipi_db(ffffffff82785ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff82933140) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82933140) at __mp_lock+0x127 sys/kern/kern_lock.c:147 if_qstart_compat(ffff80000017c538) at if_qstart_compat+0x1a sys/net/if.c:675 ifq_serialize(ffff80000017c538,ffff80000017c658) at ifq_serialize+0x173 sys/net/ifq.c:113 taskq_thread(ffff80000002c000) at taskq_thread+0xfa sys/kern/kern_task.c:449 end trace frame: 0x0, 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:398 panic(ffffffff8240ef1a) at panic+0x164 sys/kern/subr_prf.c:218 pool_cache_get(ffffffff82933910) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline] pool_cache_get(ffffffff82933910) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884 pool_get(ffffffff82933910,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_copym(fffffd8063cc2200,b00,104,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] m_copym(fffffd8063cc2200,b00,104,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667 tcp_output(ffff800000adb4d0) at tcp_output+0x15ba sys/netinet/tcp_output.c:673 tcp_usrreq(fffffd806eaeaaf8,9,fffffd8063cc2200,0,0,ffff8000ffffe288) at tcp_usrreq+0xa55 sosend(fffffd806eaeaaf8,0,ffff800020e60838,0,0,80) at sosend+0x671 sys/kern/uipc_socket.c:555 dofilewritev(ffff8000ffffe288,4,ffff800020e60838,0,ffff800020e60920) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_write(ffff8000ffffe288,ffff800020e608d0,ffff800020e60920) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800020e609a0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e609a0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcae40, count: 3 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff8240ef1a) at panic+0x164 sys/kern/subr_prf.c:218 pool_cache_get(ffffffff82933910) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline] pool_cache_get(ffffffff82933910) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884 pool_get(ffffffff82933910,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_copym(fffffd8063cc2200,b00,104,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] m_copym(fffffd8063cc2200,b00,104,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667 tcp_output(ffff800000adb4d0) at tcp_output+0x15ba sys/netinet/tcp_output.c:673 tcp_usrreq(fffffd806eaeaaf8,9,fffffd8063cc2200,0,0,ffff8000ffffe288) at tcp_usrreq+0xa55 sosend(fffffd806eaeaaf8,0,ffff800020e60838,0,0,80) at sosend+0x671 sys/kern/uipc_socket.c:555 dofilewritev(ffff8000ffffe288,4,ffff800020e60838,0,ffff800020e60920) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_write(ffff8000ffffe288,ffff800020e608d0,ffff800020e60920) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800020e609a0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e609a0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcae40, count: -12