panic: pool_cache_item_magic_check: mbufpl cpu free list modified: item addr 0xfffffd806cca6e00+16 0x0!=0xe5ed92f6193cb61e Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 458023 93166 0 0 0 1 syz-executor *257344 90508 0 0x14000 0x200 0 softnet0 db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83496177) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_cache_get(ffffffff83992018) at pool_cache_get+0x3d4 sys/kern/subr_pool.c:1906 pool_get(ffffffff83992018,2) at pool_get+0xd6 sys/kern/subr_pool.c:-1 m_get(2,3) at m_get+0x7e sys/kern/uipc_mbuf.c:240 sbappendaddr(ffff800001642fd0,ffff80002a1efca0,fffffd8071fe0e00,0) at sbappendaddr+0x24a sys/kern/uipc_socket2.c:-1 udp_sbappend(fffffd806f978b88,fffffd8071fe0e00,fffffd8071fe0ee4,0,14,fffffd8071fe0ef8,67a913f04388dc4d,14,0) at udp_sbappend+0x4c1 sys/netinet/udp_usrreq.c:705 udp_input(ffff80002a1eff90,ffff80002a1eff9c,11,2,ffffffff83ac9d98) at udp_input+0x1a34 sys/netinet/udp_usrreq.c:-1 ip_deliver(ffff80002a1eff90,ffff80002a1eff9c,11,2,1,ffffffff83ac9d98) at ip_deliver+0x42c sys/netinet/ip_input.c:-1 ip_ours(ffff80002a1eff90,ffff80002a1eff9c,0,0,ffffffff83ac9d98) at ip_ours+0xd7 sys/netinet/ip_input.c:259 ip_input_if(ffff80002a1eff90,ffff80002a1eff9c,0,0,ffff800000c31000,ffffffff83ac9d98) at ip_input_if+0x45c sys/netinet/ip_input.c:-1 ipv4_input(ffff800000c31000,fffffd8071fe0e00,ffffffff83ac9d98) at ipv4_input+0x5a sys/netinet/ip_input.c:344 if_input_process(ffff800000c31000,ffff80002a1f0078,0) at if_input_process+0x495 sys/net/if.c:1080 ifiq_process(ffff800000c314b0) at ifiq_process+0xcd sys/net/ifq.c:864 end trace frame: 0xffff80002a1f0160, count: 0 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: pool_cache_item_magic_check: mbufpl cpu free list modified: item addr 0xfffffd806cca6e00+16 0x0!=0xe5ed92f6193cb61e ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83496177) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_cache_get(ffffffff83992018) at pool_cache_get+0x3d4 sys/kern/subr_pool.c:1906 pool_get(ffffffff83992018,2) at pool_get+0xd6 sys/kern/subr_pool.c:-1 m_get(2,3) at m_get+0x7e sys/kern/uipc_mbuf.c:240 sbappendaddr(ffff800001642fd0,ffff80002a1efca0,fffffd8071fe0e00,0) at sbappendaddr+0x24a sys/kern/uipc_socket2.c:-1 udp_sbappend(fffffd806f978b88,fffffd8071fe0e00,fffffd8071fe0ee4,0,14,fffffd8071fe0ef8,67a913f04388dc4d,14,0) at udp_sbappend+0x4c1 sys/netinet/udp_usrreq.c:705 udp_input(ffff80002a1eff90,ffff80002a1eff9c,11,2,ffffffff83ac9d98) at udp_input+0x1a34 sys/netinet/udp_usrreq.c:-1 ip_deliver(ffff80002a1eff90,ffff80002a1eff9c,11,2,1,ffffffff83ac9d98) at ip_deliver+0x42c sys/netinet/ip_input.c:-1 ip_ours(ffff80002a1eff90,ffff80002a1eff9c,0,0,ffffffff83ac9d98) at ip_ours+0xd7 sys/netinet/ip_input.c:259 ip_input_if(ffff80002a1eff90,ffff80002a1eff9c,0,0,ffff800000c31000,ffffffff83ac9d98) at ip_input_if+0x45c sys/netinet/ip_input.c:-1 ipv4_input(ffff800000c31000,fffffd8071fe0e00,ffffffff83ac9d98) at ipv4_input+0x5a sys/netinet/ip_input.c:344 if_input_process(ffff800000c31000,ffff80002a1f0078,0) at if_input_process+0x495 sys/net/if.c:1080 ifiq_process(ffff800000c314b0) at ifiq_process+0xcd sys/net/ifq.c:864 taskq_thread(ffff80000002c000) at taskq_thread+0x157 sys/kern/kern_task.c:446 end trace frame: 0x0, count: -15 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a1ef890 rbx 0xffffffff8391de07 cpu_info_full_primary+0x2e07 rdx 0 rcx 0xffff8000ffffe7c8 rax 0xffffffff8391cff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xfe125ca559036b37 r11 0xd2b5fa0606d5b48f r12 0xffffffff8391dc08 cpu_info_full_primary+0x2c08 r13 0 r14 0 r15 0x1 rip 0xffffffff827a3b95 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a1ef880 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (softnet0) tid=257344 pid=90508 tcnt=1 stat=onproc flags process=14000 proc=200 runpri=32, usrpri=51, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffffe530,0xffff8000ffffea70 process=0xffff8000ffff84d0 user=0xffff80002a1eb000, vmspace=0xffffffff839ce468 estcpu=1, cpticks=29, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 93166 458023 44849 0 7 0 syz-executor 93166 48036 44849 0 2 0x4000000 syz-executor 14968 504324 97198 0 2 0 syz-executor 8022 104558 8250 0 2 0 syz-executor 8022 3383 8250 0 3 0x4000080 fsleep syz-executor 83165 424283 80640 60929 2 0x10 syz-executor 83165 97404 80640 60929 3 0x4000090 fsleep syz-executor 83165 50698 80640 60929 3 0x4000090 fsleep syz-executor 83165 127151 80640 60929 3 0x4000090 fsleep syz-executor 17022 366950 92529 0 2 0x1000000 syz-executor 17022 338899 92529 0 3 0x5000080 fsleep syz-executor 58195 67482 74224 60929 2 0x10 syz-executor 58195 309602 74224 60929 3 0x4000090 fsleep syz-executor 16580 509097 36175 60929 2 0x10 syz-executor 16580 377811 36175 60929 3 0x4000090 fsleep syz-executor 16580 166408 36175 60929 3 0x4000090 fsleep syz-executor 34108 155207 22321 0 2 0 syz-executor 34108 189913 22321 0 3 0x4000080 fsleep syz-executor 34108 317340 22321 0 2 0x4000000 syz-executor 36175 178220 99228 0 2 0xc82 syz-executor 92529 83454 99228 0 2 0xc82 syz-executor 6424 208053 1 0 3 0x100083 ttyopn getty 8250 506213 99228 0 3 0x82 nanoslp syz-executor 44849 216070 99228 0 3 0x82 nanoslp syz-executor 80640 449782 99228 0 2 0xc82 syz-executor 74224 410503 99228 0 2 0xc82 syz-executor 97198 198739 99228 0 3 0x82 nanoslp syz-executor 22321 64851 99228 0 2 0xc82 syz-executor 99228 104363 50912 0 3 0x82 kqread syz-executor 50912 328845 69928 0 3 0x10008a sigsusp ksh 69928 450790 13201 0 3 0x98 kqread sshd-session 13201 451783 60468 0 3 0x92 kqread sshd-session 60468 458466 1 0 3 0x88 kqread sshd 51521 107556 67774 74 3 0x1100092 bpf pflogd 67774 174164 1 0 3 0x80 sbwait pflogd 82570 392927 22118 73 3 0x1100090 kqread syslogd 22118 68710 1 0 3 0x100082 sbwait syslogd 26954 308563 1 0 3 0x100080 kqread resolvd 15971 251364 41631 77 3 0x100092 kqread dhcpleased 29876 20163 41631 77 3 0x100092 kqread dhcpleased 41631 49074 1 0 3 0x80 kqread dhcpleased 83430 201142 0 0 3 0x14200 bored smr 72746 340572 0 0 2 0x14200 zerothread 580 403204 0 0 3 0x14200 aiodoned aiodoned 92817 468457 0 0 3 0x14200 syncer update 49704 223083 0 0 3 0x14200 cleaner cleaner 38396 241540 0 0 3 0x14200 reaper reaper 1980 163442 0 0 3 0x14200 pgdaemon pagedaemon 26817 260426 0 0 3 0x14200 bored viomb 79233 265433 0 0 3 0x40014200 acpi0 acpi0 82753 214821 0 0 3 0x40014200 idle1 51673 86726 0 0 3 0x14200 bored softnet1 *90508 257344 0 0 7 0x14200 softnet0 22857 508408 0 0 3 0x14200 bored systqmp 57054 523130 0 0 3 0x14200 bored systq 45118 484156 0 0 3 0x14200 tmoslp softclockmp 21824 93201 0 0 3 0x40014200 tmoslp softclock 166 50492 0 0 3 0x40014200 idle0 1 417448 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex sbrcv r = 0 (0xffff800001643028) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter+0x4b4 sys/kern/kern_lock.c:487 #2 udp_sbappend+0x4a6 sys/netinet/udp_usrreq.c:705 #3 udp_input+0x1a34 sys/netinet/udp_usrreq.c:-1 #4 ip_deliver+0x42c sys/netinet/ip_input.c:-1 #5 ip_ours+0xd7 sys/netinet/ip_input.c:259 #6 ip_input_if+0x45c sys/netinet/ip_input.c:-1 #7 ipv4_input+0x5a sys/netinet/ip_input.c:344 #8 if_input_process+0x495 sys/net/if.c:1080 #9 ifiq_process+0xcd sys/net/ifq.c:864 #10 taskq_thread+0x157 sys/kern/kern_task.c:446 #11 proc_trampoline+0x10 Process 90508 (softnet0) thread 0xffff8000ffffe7c8 (257344) shared rwlock netlock r = 0 (0xffffffff83962840) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_read+0x3e8 sys/kern/kern_rwlock.c:413 #2 if_input_process+0x1c9 sys/net/if.c:1061 #3 ifiq_process+0xcd sys/net/ifq.c:864 #4 taskq_thread+0x157 sys/kern/kern_task.c:446 #5 proc_trampoline+0x10 shared rwlock softnet0 r = 0 (0xffff80000002c078) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 taskq_thread+0x12a sys/kern/kern_task.c:442 #2 proc_trampoline+0x10 exclusive mutex sbrcv r = 0 (0xffff800001643028) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter+0x4b4 sys/kern/kern_lock.c:487 #2 udp_sbappend+0x4a6 sys/netinet/udp_usrreq.c:705 #3 udp_input+0x1a34 sys/netinet/udp_usrreq.c:-1 #4 ip_deliver+0x42c sys/netinet/ip_input.c:-1 #5 ip_ours+0xd7 sys/netinet/ip_input.c:259 #6 ip_input_if+0x45c sys/netinet/ip_input.c:-1 #7 ipv4_input+0x5a sys/netinet/ip_input.c:344 #8 if_input_process+0x495 sys/net/if.c:1080 #9 ifiq_process+0xcd sys/net/ifq.c:864 #10 taskq_thread+0x157 sys/kern/kern_task.c:446 #11 proc_trampoline+0x10 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11110 12104K 13041K 166960K 14574 0 pcb 17 16K 18K 166960K 752 0 rtable 238 20K 22K 166960K 1011 0 pf 46 20K 83K 166960K 268 0 ifaddr 41 7K 8K 166960K 171 0 ifgroup 60 2K 2K 166960K 253 0 sysctl 4 1K 9K 166960K 24 0 counters 74 37K 38K 166960K 260 0 ioctlops 0 0K 4K 166960K 1935 0 iov 0 0K 24K 166960K 113 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1505 95K 95K 166960K 3513 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 26 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 180 0 dirhash 12 2K 2K 166960K 48 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 240K 166960K 2252 0 sigio 0 0K 0K 166960K 73 0 proc 73 115K 164K 166960K 1010 0 subproc 72 4K 4K 166960K 153 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 322 0 in_multi 76 5K 7K 166960K 317 0 ether_multi 1 0K 0K 166960K 32 0 mrt 1 0K 0K 166960K 49 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 241 1076K 1076K 166960K 241 0 exec 0 0K 1K 166960K 885 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 240 151K 175K 166960K 22227 0 UVM aobj 59 18K 18K 166960K 65 0 pinsyscall 43 86K 106K 166960K 3622 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 194 0 NDP 14 0K 1K 166960K 113 0 temp 80 9084K 9152K 166960K 94603 0 kqueue 14 22K 33K 166960K 403 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 26 0 0 1 0 1 1 0 8 0 rtpcb 120 346 0 343 5 4 1 3 0 8 0 rtentry 176 288 0 208 7 2 5 6 0 8 0 unpcb 144 1461 0 1440 12 10 2 5 0 8 1 syncache 336 8 0 8 5 5 0 1 0 8 0 tcpqe 32 11 0 11 3 3 0 1 0 8 0 tcpcb 736 806 0 799 20 19 1 7 0 8 0 arp 136 47 0 33 1 0 1 1 0 8 0 inpcb 328 3077 0 3066 34 21 13 13 0 8 11 nd6 152 61 0 41 1 0 1 1 0 8 0 pkpcb 40 8 0 8 6 6 0 1 0 8 0 kcovpl 48 17 0 9 1 0 1 1 0 8 0 ppxss 1192 66 0 66 6 5 1 1 0 8 1 pppxif 1576 10 0 10 5 4 1 1 0 8 1 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 16 0 5 1 0 1 1 0 482 0 pffrnode 88 14 0 5 1 0 1 1 0 8 0 pffrent 40 24 0 13 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 pfrktable 1344 10 0 7 3 2 1 1 0 8 0 pfanchor 1288 1 0 0 1 0 1 1 0 8 0 pftag 88 4 0 0 1 0 1 1 0 8 0 pfstitem 24 188 0 103 1 0 1 1 0 8 0 pfstkey 128 192 0 107 3 0 3 3 0 8 0 pfstate 448 190 0 105 13 3 10 13 0 8 0 pfrule 1360 39 0 26 3 1 2 2 0 8 0 rttmr 136 3 0 3 3 3 0 1 0 8 0 art_heap8 4096 6 0 0 6 0 6 6 0 8 0 art_heap4 256 1247 0 896 40 14 26 29 0 8 1 art_table 40 1253 0 896 5 0 5 5 0 8 0 art_node 32 283 0 216 1 0 1 1 0 8 0 sysvmsgpl 40 43 0 3 2 1 1 1 0 8 0 semupl 112 3 0 3 3 3 0 1 0 8 0 semapl 112 173 0 163 1 0 1 1 0 8 0 shmpl 112 54 0 5 2 0 2 2 0 8 0 dirhash 1024 41 0 24 3 0 3 3 0 8 0 dino2pl 256 5607 0 4126 94 0 94 94 0 8 0 ffsino 296 5607 0 4126 116 1 115 115 0 8 0 nchpl 144 8537 0 6811 65 0 65 65 0 8 0 rtmask 32 10 0 10 5 4 1 1 0 8 1 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 30054 0 30054 6 5 1 2 0 8 1 percpumem 16 145 0 93 1 0 1 1 0 8 0 vcpupl 3968 8 0 1 1 0 1 1 0 8 0 vmpool 848 8 0 1 1 0 1 1 0 8 0 pfiaddrpl 120 1 0 0 1 0 1 1 0 8 0 kstatmem 264 158 0 124 4 1 3 3 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 9 0 9 5 4 1 1 0 8 1 scxspl 216 77374 0 77374 13 12 1 8 1 8 1 plimitpl 152 719 0 700 1 0 1 1 0 8 0 sigapl 424 2542 0 2494 8 2 6 8 0 8 0 knotepl 120 801 0 0 24 0 24 24 0 8 0 kqueuepl 224 743 0 732 12 10 2 5 0 8 1 pipepl 344 392 0 364 3 0 3 3 0 8 0 fdescpl 528 2504 0 2472 3 0 3 3 0 8 0 filepl 160 16589 0 16358 33 17 16 16 0 8 3 lockfpl 104 1057 0 1053 3 2 1 2 0 8 0 lockfspl 48 413 0 409 1 0 1 1 0 8 0 sessionpl 144 36 0 27 1 0 1 1 0 8 0 pgrppl 48 83 0 66 1 0 1 1 0 8 0 ucredpl 104 2594 0 2578 1 0 1 1 0 8 0 zombiepl 144 3142 0 3142 2 1 1 1 0 8 1 processpl 1232 2542 0 2494 6 1 5 6 0 8 0 procpl 664 6154 0 6095 9 3 6 8 0 8 0 sosppl 176 16 0 15 7 6 1 1 0 8 0 sockpl 752 4976 0 4940 56 39 17 18 0 8 12 mcl64k 65536 11 0 0 2 0 2 2 0 8 0 mcl16k 16384 7 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 117 0 0 15 0 15 15 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 52 0 0 6 0 6 6 0 8 0 mtagpl 96 10 0 0 1 0 1 1 0 8 0 mbufpl 256 1879 0 0 115 0 115 115 0 8 0 bufpl 280 32362 0 26232 440 1 439 439 0 8 0 anonpl 32 14840 0 0 120 0 120 120 0 246 0 amapchunkpl 152 76944 0 76447 72 46 26 48 0 158 2 amappl16 200 10927 0 10894 102 93 9 35 0 8 0 amappl15 192 8 0 8 2 2 0 1 0 8 0 amappl14 184 537 0 536 1 0 1 1 0 8 0 amappl13 176 153 0 141 1 0 1 1 0 8 0 amappl12 168 2798 0 2768 2 0 2 2 0 8 0 amappl11 160 29 0 29 1 1 0 1 0 8 0 amappl10 152 67 0 53 1 0 1 1 0 8 0 amappl9 144 255 0 255 1 1 0 1 0 8 0 amappl8 136 163 0 160 1 0 1 1 0 8 0 amappl7 128 178 0 165 1 0 1 1 0 8 0 amappl6 120 249 0 247 1 0 1 1 0 8 0 amappl5 112 107 0 96 1 0 1 1 0 8 0 amappl4 104 347 0 324 1 0 1 1 0 8 0 amappl3 96 15463 0 15349 5 1 4 4 0 8 0 amappl2 88 622 0 561 2 0 2 2 0 8 0 amappl1 80 19720 0 19107 19 5 14 17 0 8 0 amappl 88 20984 0 20814 5 0 5 5 0 92 0 uvmvnodes 80 184 0 0 4 0 4 4 0 8 0 dma32768 32768 1 0 1 1 1 0 1 0 8 0 dma8192 8192 1 0 1 1 1 0 1 0 8 0 dma4096 4096 2 0 2 2 2 0 1 0 8 0 dma2048 2048 1 0 1 1 1 0 1 0 8 0 dma1024 1024 2 0 1 1 0 1 1 0 8 0 dma512 512 1 0 1 1 1 0 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 259 0 259 5 4 1 1 0 8 1 dma64 64 8 0 8 2 2 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 64 0 6 2 0 2 2 0 8 0 uaddrrnd 24 2504 0 2472 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2504 0 2472 1 0 1 1 0 8 0 vmmpekpl 168 20543 0 20493 3 0 3 3 0 8 0 vmmpepl 168 166045 0 164072 142 38 104 117 0 357 0 vmsppl 488 2503 0 2472 6 1 5 5 0 8 0 rwobjpl 80 46975 0 45785 42 5 37 38 0 8 0 pdppl 4096 5031 0 4953 126 47 79 85 0 8 1 pvpl 32 25480 0 0 206 1 205 205 0 265 0 pmappl 256 2511 0 2473 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 467 0 101 11 0 11 11 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83496177) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_cache_get(ffffffff83992018) at pool_cache_get+0x3d4 sys/kern/subr_pool.c:1906 pool_get(ffffffff83992018,2) at pool_get+0xd6 sys/kern/subr_pool.c:-1 m_get(2,3) at m_get+0x7e sys/kern/uipc_mbuf.c:240 sbappendaddr(ffff800001642fd0,ffff80002a1efca0,fffffd8071fe0e00,0) at sbappendaddr+0x24a sys/kern/uipc_socket2.c:-1 udp_sbappend(fffffd806f978b88,fffffd8071fe0e00,fffffd8071fe0ee4,0,14,fffffd8071fe0ef8,67a913f04388dc4d,14,0) at udp_sbappend+0x4c1 sys/netinet/udp_usrreq.c:705 udp_input(ffff80002a1eff90,ffff80002a1eff9c,11,2,ffffffff83ac9d98) at udp_input+0x1a34 sys/netinet/udp_usrreq.c:-1 ip_deliver(ffff80002a1eff90,ffff80002a1eff9c,11,2,1,ffffffff83ac9d98) at ip_deliver+0x42c sys/netinet/ip_input.c:-1 ip_ours(ffff80002a1eff90,ffff80002a1eff9c,0,0,ffffffff83ac9d98) at ip_ours+0xd7 sys/netinet/ip_input.c:259 ip_input_if(ffff80002a1eff90,ffff80002a1eff9c,0,0,ffff800000c31000,ffffffff83ac9d98) at ip_input_if+0x45c sys/netinet/ip_input.c:-1 ipv4_input(ffff800000c31000,fffffd8071fe0e00,ffffffff83ac9d98) at ipv4_input+0x5a sys/netinet/ip_input.c:344 if_input_process(ffff800000c31000,ffff80002a1f0078,0) at if_input_process+0x495 sys/net/if.c:1080 ifiq_process(ffff800000c314b0) at ifiq_process+0xcd sys/net/ifq.c:864 taskq_thread(ffff80000002c000) at taskq_thread+0x157 sys/kern/kern_task.c:446 end trace frame: 0x0, count: -15 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299bdff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 end of kernel end trace frame: 0x747fbbf3bcd0, count: 12 ddb{1}> trace x86_ipi_db(ffff8000299bdff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 end of kernel end trace frame: 0x747fbbf3bcd0, count: -3