panic: pool_cache_item_magic_check: mbufpl cpu free list modified: item addr 0xfffffd806f6ba400+16 0x0!=0x63407a347aeb0df5 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 27575 44370 0 0x12 0x40 0K sshd * 68499 28237 0 0x14000 0x200 1 softnet db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff82407a62) at panic+0x164 sys/kern/subr_prf.c:218 pool_cache_get(ffffffff828c6318) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline] pool_cache_get(ffffffff828c6318) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884 pool_get(ffffffff828c6318,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_gethdr(2,2) at m_gethdr+0x4c sys/kern/uipc_mbuf.c:283 tcp_output(ffff800000ada4a0) at tcp_output+0x14e6 tcp_input(ffff800020da98d8,ffff800020da98e4,6,2) at tcp_input+0x2356 ip_deliver(ffff800020da98d8,ffff800020da98e4,6,2) at ip_deliver+0x353 sys/netinet/ip_input.c:668 ip_ours(ffff800020da98d8,ffff800020da98e4,0,0) at ip_ours+0x412 ip_input_if(ffff800020da98d8,ffff800020da98e4,4,0,ffff80000017c2a8) at ip_input_if+0x6ce ipv4_input(ffff80000017c2a8,fffffd806f35cf00) at ipv4_input+0x48 sys/netinet/ip_input.c:215 if_input_process(ffff80000017c2a8,ffff800020da9978) at if_input_process+0xda sys/net/if.c:832 ifiq_process(ffff80000017c6d8) at ifiq_process+0x80 sys/net/ifq.c:768 taskq_thread(ffff80000002c000) at taskq_thread+0xfa sys/kern/kern_task.c:449 end trace frame: 0x0, count: 1 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 0xfffffd806f6ba400+16 0x0!=0x63407a347aeb0df5 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff82407a62) at panic+0x164 sys/kern/subr_prf.c:218 pool_cache_get(ffffffff828c6318) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline] pool_cache_get(ffffffff828c6318) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884 pool_get(ffffffff828c6318,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_gethdr(2,2) at m_gethdr+0x4c sys/kern/uipc_mbuf.c:283 tcp_output(ffff800000ada4a0) at tcp_output+0x14e6 tcp_input(ffff800020da98d8,ffff800020da98e4,6,2) at tcp_input+0x2356 ip_deliver(ffff800020da98d8,ffff800020da98e4,6,2) at ip_deliver+0x353 sys/netinet/ip_input.c:668 ip_ours(ffff800020da98d8,ffff800020da98e4,0,0) at ip_ours+0x412 ip_input_if(ffff800020da98d8,ffff800020da98e4,4,0,ffff80000017c2a8) at ip_input_if+0x6ce ipv4_input(ffff80000017c2a8,fffffd806f35cf00) at ipv4_input+0x48 sys/netinet/ip_input.c:215 if_input_process(ffff80000017c2a8,ffff800020da9978) at if_input_process+0xda sys/net/if.c:832 ifiq_process(ffff80000017c6d8) at ifiq_process+0x80 sys/net/ifq.c:768 taskq_thread(ffff80000002c000) at taskq_thread+0xfa sys/kern/kern_task.c:449 end trace frame: 0x0, count: -14 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800020da91d0 rbx 0xffff800020da9280 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffff800020da9190 r9 0xffffffff82193d9f kprintf+0x16f r10 0x1 r11 0xbeebee07e7f4643b r12 0x3000000008 r13 0xffff800020da91e0 r14 0x100 r15 0x1 rip 0xffffffff820d5aa8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020da91c0 ss 0 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (softnet) pid=68499 stat=onproc flags process=14000 proc=200 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020d88000,0xffff800020d88778 process=0xffff800020d8afc0 user=0xffff800020da4000, vmspace=0xffffffff82920c28 estcpu=0, cpticks=1, pctcpu=1.41 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 19968 445291 0 0 3 0x14200 bored sosplice 33263 444597 60998 0 2 0x2 syz-executor.1 62889 208353 60998 0 3 0x82 piperd syz-executor.0 60998 446265 7154 0 3 0x82 thrsleep syz-fuzzer 60998 169561 7154 0 2 0x4000482 syz-fuzzer 60998 495862 7154 0 3 0x4000082 kqread syz-fuzzer 60998 136418 7154 0 3 0x4000082 thrsleep syz-fuzzer 60998 416619 7154 0 3 0x4000082 thrsleep syz-fuzzer 60998 184277 7154 0 3 0x4000082 thrsleep syz-fuzzer 60998 107545 7154 0 2 0x4000002 syz-fuzzer 60998 195442 7154 0 3 0x4000082 thrsleep syz-fuzzer 7154 287084 44370 0 3 0x10008a pause ksh 44370 27575 79419 0 7 0x52 sshd 31289 422476 1 0 3 0x100083 ttyin getty 79419 97149 1 0 3 0x80 select sshd 52685 217460 6191 74 3 0x100092 bpf pflogd 6191 249630 1 0 3 0x80 netio pflogd 40802 443019 12478 73 3 0x100090 kqread syslogd 12478 295230 1 0 3 0x100082 netio syslogd 91122 99010 1 77 3 0x100090 poll dhclient 75331 100109 1 0 3 0x80 poll dhclient 50009 246033 0 0 3 0x14200 bored smr 13415 147306 0 0 3 0x14200 pgzero zerothread 33843 344692 0 0 3 0x14200 aiodoned aiodoned 31015 498977 0 0 3 0x14200 syncer update 25190 73570 0 0 3 0x14200 cleaner cleaner 83779 190249 0 0 3 0x14200 reaper reaper 89642 98580 0 0 3 0x14200 pgdaemon pagedaemon 44963 350378 0 0 3 0x14200 bored crynlk 82931 1092 0 0 3 0x14200 bored crypto 15330 153018 0 0 3 0x40014200 acpi0 acpi0 4536 15173 0 0 3 0x40014200 idle1 *28237 68499 0 0 7 0x14200 softnet 81870 314884 0 0 3 0x14200 bored systqmp 49343 385074 0 0 3 0x14200 bored systq 85317 513537 0 0 2 0x40014200 softclock 26455 166656 0 0 3 0x40014200 idle0 1 170863 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 33263 (syz-executor.1) thread 0xffff800020ea33d8 (444597) exclusive rrwlock inode r = 0 (0xfffffd806ca4b4d8) #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 (0xfffffd806ca4b5e8) #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 vfs_lookup+0xe6 sys/kern/vfs_lookup.c:419 #6 namei+0x63c sys/kern/vfs_lookup.c:249 #7 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1853 #8 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #9 Xsyscall+0x128 Process 44370 (sshd) thread 0xffff8000ffffeee0 (27575) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff828d0898) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 uvm_map_inentry+0xbe sys/uvm/uvm_map.c:1890 #2 syscall+0x3dc mi_syscall sys/sys/syscall_mi.h:87 [inline] #2 syscall+0x3dc sys/arch/amd64/amd64/trap.c:570 #3 Xsyscall+0x128 Process 28237 (softnet) thread 0xffff800020d884f0 (68499) exclusive rwlock netlock r = 0 (0xffffffff82795a50) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 if_input_process+0xa1 sys/net/if.c:832 #2 ifiq_process+0x80 sys/net/ifq.c:768 #3 taskq_thread+0xfa sys/kern/kern_task.c:449 #4 proc_trampoline+0x1c shared rwlock softnet r = 0 (0xffff80000002c070) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 taskq_thread+0xdf sys/kern/kern_task.c:445 #2 proc_trampoline+0x1c ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9483 6527K 6663K 78643K 10701 0 pcb 13 8K 8K 78643K 34 0 rtable 108 3K 7K 78643K 242 0 ifaddr 47 11K 13K 78643K 70 0 counters 43 33K 34K 78643K 47 0 ioctlops 0 0K 4K 78643K 1594 0 iov 0 0K 4K 78643K 10 0 mount 1 1K 1K 78643K 1 0 vnodes 1220 77K 77K 78643K 1256 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 3 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 29 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 4 9K 25K 78643K 148 0 sigio 0 0K 0K 78643K 2 0 proc 60 63K 83K 78643K 439 0 subproc 32 2K 2K 78643K 34 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 10 0 in_multi 44 2K 2K 78643K 59 0 ether_multi 1 0K 0K 78643K 2 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 43 201K 201K 78643K 43 0 exec 0 0K 1K 78643K 219 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 27K 27K 78643K 1435 0 UVM aobj 5 2K 2K 78643K 5 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 8 0 NDP 6 0K 0K 78643K 13 0 temp 71 3861K 3925K 78643K 2351 0 kqueue 3 4K 6K 78643K 5 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 6 0 0 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 88 19 0 17 1 0 1 1 0 8 0 rtentry 112 50 0 5 2 0 2 2 0 8 0 unpcb 120 129 0 119 1 0 1 1 0 8 0 syncache 272 8 0 8 2 1 1 1 0 8 1 tcpqe 32 14 0 14 1 1 0 1 0 8 0 tcpcb 592 41 0 33 2 0 2 2 0 8 0 inpcb 296 223 0 216 2 0 2 2 0 8 1 nd6 48 10 0 3 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 pffrag 232 2 0 2 1 0 1 1 0 482 1 pffrnode 88 2 0 2 1 0 1 1 0 8 1 pffrent 40 6 0 6 1 0 1 1 0 8 1 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 10 0 10 1 0 1 1 0 8 1 pfstitem 24 12 0 1 1 0 1 1 0 8 0 pfstkey 112 12 0 1 1 0 1 1 0 8 0 pfstate 328 12 0 1 1 0 1 1 0 8 0 pfrule 1360 22 0 21 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 191 0 0 12 0 12 12 0 8 0 art_table 32 192 0 0 2 0 2 2 0 8 0 art_node 16 49 0 8 1 0 1 1 0 8 0 sysvmsgpl 40 10 0 5 1 0 1 1 0 8 0 semupl 112 4 0 4 1 0 1 1 0 8 1 semapl 112 22 0 12 1 0 1 1 0 8 0 shmpl 112 2 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1555 0 151 88 0 88 88 0 8 0 ffsino 272 1555 0 151 94 0 94 94 0 8 0 nchpl 144 1931 0 327 60 0 60 60 0 8 0 uvmvnodes 72 1628 0 0 30 0 30 30 0 8 0 vnodes 208 1628 0 0 86 0 86 86 0 8 0 namei 1024 5129 0 5129 1 0 1 1 0 8 1 percpumem 16 34 0 2 1 0 1 1 0 8 0 pfiaddrpl 120 3 0 3 1 0 1 1 0 8 1 scxspl 200 5614 0 5614 8 1 7 7 0 8 7 plimitpl 152 21 0 13 1 0 1 1 0 8 0 sigapl 424 364 0 333 4 0 4 4 0 8 0 futexpl 56 1867 0 1867 1 0 1 1 0 8 1 knotepl 112 64 0 44 1 0 1 1 0 8 0 kqueuepl 152 14 0 12 1 0 1 1 0 8 0 pipepl 304 142 0 131 2 0 2 2 0 8 1 fdescpl 496 348 0 333 3 0 3 3 0 8 0 filepl 152 1963 0 1861 5 0 5 5 0 8 1 lockfpl 104 23 0 22 1 0 1 1 0 8 0 lockfspl 48 8 0 7 1 0 1 1 0 8 0 sessionpl 120 18 0 7 1 0 1 1 0 8 0 pgrppl 48 18 0 7 1 0 1 1 0 8 0 ucredpl 96 134 0 125 1 0 1 1 0 8 0 zombiepl 144 333 0 333 1 0 1 1 0 8 1 processpl 1008 364 0 333 5 0 5 5 0 8 0 procpl 632 619 0 581 5 0 5 5 0 8 1 sosppl 144 7 0 7 1 0 1 1 0 8 1 sockpl 400 374 0 355 4 0 4 4 0 8 2 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 3 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 5 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 306 0 0 38 0 38 38 0 8 0 mtagpl 96 10 0 0 1 0 1 1 0 8 0 mbufpl 256 315 0 0 20 0 20 20 0 8 0 bufpl 280 4280 0 127 297 0 297 297 0 8 0 anonpl 16 50067 0 32486 79 1 78 78 0 124 6 amapchunkpl 152 1878 0 1575 14 0 14 14 0 158 0 amappl16 192 1536 0 741 45 0 45 45 0 8 4 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 54 0 52 1 0 1 1 0 8 0 amappl13 168 29 0 26 1 0 1 1 0 8 0 amappl12 160 21 0 16 1 0 1 1 0 8 0 amappl11 152 51 0 36 1 0 1 1 0 8 0 amappl10 144 16 0 13 1 0 1 1 0 8 0 amappl9 136 373 0 371 1 0 1 1 0 8 0 amappl8 128 376 0 320 2 0 2 2 0 8 0 amappl7 120 124 0 111 1 0 1 1 0 8 0 amappl6 112 32 0 25 1 0 1 1 0 8 0 amappl5 104 267 0 252 1 0 1 1 0 8 0 amappl4 96 487 0 459 1 0 1 1 0 8 0 amappl3 88 172 0 163 1 0 1 1 0 8 0 amappl2 80 1847 0 1785 2 0 2 2 0 8 0 amappl1 72 18714 0 18293 23 13 10 18 0 8 0 amappl 80 908 0 830 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 4 0 0 1 0 1 1 0 8 0 uaddrrnd 24 348 0 333 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 348 0 333 1 0 1 1 0 8 0 vmmpekpl 168 7047 0 7012 2 0 2 2 0 8 0 vmmpepl 168 50901 0 48988 119 3 116 117 0 357 26 vmsppl 368 347 0 333 2 0 2 2 0 8 0 pdppl 4096 703 0 666 6 0 6 6 0 8 1 pvpl 32 167178 0 146521 192 0 192 192 0 265 22 pmappl 232 347 0 333 2 1 1 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 279 0 4 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff827a7ff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc rw_exit_write(ffffffff82795a40) at rw_exit_write+0x70 sys/kern/kern_rwlock.c:154 soo_poll(fffffd8072811a18,1,ffff8000ffffeee0) at soo_poll+0x329 sys/kern/sys_socket.c:188 selscan(ffff8000ffffeee0,ffff800020e04790,ffff800020e0479c,c,4,ffff800020e04970) at selscan+0x17a sys/kern/sys_generic.c:722 dopselect(ffff8000ffffeee0,c,7b41d468ee0,7b41d468f80,0,0) at dopselect+0x910 sys/kern/sys_generic.c:642 sys_select(ffff8000ffffeee0,ffff800020e04920,ffff800020e04970) at sys_select+0x8b sys/kern/sys_generic.c:542 syscall(ffff800020e049f0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e049f0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd0520, count: 4 ddb{0}> trace x86_ipi_db(ffffffff827a7ff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc rw_exit_write(ffffffff82795a40) at rw_exit_write+0x70 sys/kern/kern_rwlock.c:154 soo_poll(fffffd8072811a18,1,ffff8000ffffeee0) at soo_poll+0x329 sys/kern/sys_socket.c:188 selscan(ffff8000ffffeee0,ffff800020e04790,ffff800020e0479c,c,4,ffff800020e04970) at selscan+0x17a sys/kern/sys_generic.c:722 dopselect(ffff8000ffffeee0,c,7b41d468ee0,7b41d468f80,0,0) at dopselect+0x910 sys/kern/sys_generic.c:642 sys_select(ffff8000ffffeee0,ffff800020e04920,ffff800020e04970) at sys_select+0x8b sys/kern/sys_generic.c:542 syscall(ffff800020e049f0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e049f0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd0520, count: -11 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(ffffffff82407a62) at panic+0x164 sys/kern/subr_prf.c:218 pool_cache_get(ffffffff828c6318) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline] pool_cache_get(ffffffff828c6318) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884 pool_get(ffffffff828c6318,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_gethdr(2,2) at m_gethdr+0x4c sys/kern/uipc_mbuf.c:283 tcp_output(ffff800000ada4a0) at tcp_output+0x14e6 tcp_input(ffff800020da98d8,ffff800020da98e4,6,2) at tcp_input+0x2356 ip_deliver(ffff800020da98d8,ffff800020da98e4,6,2) at ip_deliver+0x353 sys/netinet/ip_input.c:668 ip_ours(ffff800020da98d8,ffff800020da98e4,0,0) at ip_ours+0x412 ip_input_if(ffff800020da98d8,ffff800020da98e4,4,0,ffff80000017c2a8) at ip_input_if+0x6ce ipv4_input(ffff80000017c2a8,fffffd806f35cf00) at ipv4_input+0x48 sys/netinet/ip_input.c:215 if_input_process(ffff80000017c2a8,ffff800020da9978) at if_input_process+0xda sys/net/if.c:832 ifiq_process(ffff80000017c6d8) at ifiq_process+0x80 sys/net/ifq.c:768 taskq_thread(ffff80000002c000) at taskq_thread+0xfa sys/kern/kern_task.c:449 end trace frame: 0x0, count: 1 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff82407a62) at panic+0x164 sys/kern/subr_prf.c:218 pool_cache_get(ffffffff828c6318) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline] pool_cache_get(ffffffff828c6318) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884 pool_get(ffffffff828c6318,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_gethdr(2,2) at m_gethdr+0x4c sys/kern/uipc_mbuf.c:283 tcp_output(ffff800000ada4a0) at tcp_output+0x14e6 tcp_input(ffff800020da98d8,ffff800020da98e4,6,2) at tcp_input+0x2356 ip_deliver(ffff800020da98d8,ffff800020da98e4,6,2) at ip_deliver+0x353 sys/netinet/ip_input.c:668 ip_ours(ffff800020da98d8,ffff800020da98e4,0,0) at ip_ours+0x412 ip_input_if(ffff800020da98d8,ffff800020da98e4,4,0,ffff80000017c2a8) at ip_input_if+0x6ce ipv4_input(ffff80000017c2a8,fffffd806f35cf00) at ipv4_input+0x48 sys/netinet/ip_input.c:215 if_input_process(ffff80000017c2a8,ffff800020da9978) at if_input_process+0xda sys/net/if.c:832 ifiq_process(ffff80000017c6d8) at ifiq_process+0x80 sys/net/ifq.c:768 taskq_thread(ffff80000002c000) at taskq_thread+0xfa sys/kern/kern_task.c:449 end trace frame: 0x0, count: -14