panic(ffffffff821fb01b) at panic+0x15c sys/kern/subr_prf.c:207 pool_cache_get(ffffffff82645f90) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline] pool_cache_get(ffffffff82645f90) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884 pool_get(ffffffff82645f90,2) 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(ffff800000a0b980) at tcp_output+0x14e6 tcp_input(ffff800020e39478,ffff800020e39484,6,2) at tcp_input+0x2356 ip_deliver(ffff800020e39478,ffff800020e39484,6,2) at ip_deliver+0x353 sys/netinet/ip_input.c:668 ip_ours(ffff800020e39478,ffff800020e39484,ffff800020e189c0,0) at ip_ours+0x412 ip_input_if(ffff800020e39478,ffff800020e39484,4,0,ffff80000017b2a8) at ip_input_if+0x6ce ipv4_input(ffff80000017b2a8,fffffd806a286d00) at ipv4_input+0x48 sys/netinet/ip_input.c:215 ether_input(ffff80000017b2a8,fffffd806a286d00,0) at ether_input+0x345 sys/net/if_ethersubr.c:461 if_input_process(ffff80000017b2a8,ffff800020e395a8) at if_input_process+0x10b if_ih_input sys/net/if.c:910 [inline] if_input_process(ffff80000017b2a8,ffff800020e395a8) at if_input_process+0x10b sys/net/if.c:944 ifiq_process(ffff80000017b6a0) at ifiq_process+0x80 sys/net/ifq.c:646 end trace frame: 0xffff800020e39660, 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{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 0xfffffd806b81c600+16 0x0!=0xe66b25cc2b66ee3b ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff821fb01b) at panic+0x15c sys/kern/subr_prf.c:207 pool_cache_get(ffffffff82645f90) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline] pool_cache_get(ffffffff82645f90) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884 pool_get(ffffffff82645f90,2) 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(ffff800000a0b980) at tcp_output+0x14e6 tcp_input(ffff800020e39478,ffff800020e39484,6,2) at tcp_input+0x2356 ip_deliver(ffff800020e39478,ffff800020e39484,6,2) at ip_deliver+0x353 sys/netinet/ip_input.c:668 ip_ours(ffff800020e39478,ffff800020e39484,ffff800020e189c0,0) at ip_ours+0x412 ip_input_if(ffff800020e39478,ffff800020e39484,4,0,ffff80000017b2a8) at ip_input_if+0x6ce ipv4_input(ffff80000017b2a8,fffffd806a286d00) at ipv4_input+0x48 sys/netinet/ip_input.c:215 ether_input(ffff80000017b2a8,fffffd806a286d00,0) at ether_input+0x345 sys/net/if_ethersubr.c:461 if_input_process(ffff80000017b2a8,ffff800020e395a8) at if_input_process+0x10b if_ih_input sys/net/if.c:910 [inline] if_input_process(ffff80000017b2a8,ffff800020e395a8) at if_input_process+0x10b sys/net/if.c:944 ifiq_process(ffff80000017b6a0) at ifiq_process+0x80 sys/net/ifq.c:646 taskq_thread(ffff80000002b080) at taskq_thread+0x9c sys/kern/kern_task.c:369 end trace frame: 0x0, count: -15 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800020e38d70 rbx 0xffff800020e38e20 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff815c718f kprintf+0x16f r9 0x1 r10 0x2 r11 0x969a29be4bcecfad r12 0x3000000008 r13 0xffff800020e38d80 r14 0x100 r15 0x1 rip 0xffffffff820cd538 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020e38d60 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (softnet) pid=152330 stat=onproc flags process=14000 proc=200 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020e18c30,0xffff800020e18760 process=0xffff800020e1a000 user=0xffff800020e34000, vmspace=0xffffffff82680068 estcpu=0, cpticks=3, pctcpu=0.25 user=0, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 39601 266786 89646 0 2 0 syz-executor.0 39601 36751 89646 0 3 0x4000080 fsleep syz-executor.0 39601 145471 89646 0 3 0x4000080 ttyout syz-executor.0 73007 293327 19773 0 2 0x2 syz-executor.1 89646 325087 19773 0 7 0x482 syz-executor.0 19773 516657 75076 0 3 0x82 thrsleep syz-fuzzer 19773 17061 75076 0 2 0x4000482 syz-fuzzer 19773 28041 75076 0 3 0x4000082 thrsleep syz-fuzzer 19773 465696 75076 0 3 0x4000082 thrsleep syz-fuzzer 19773 496783 75076 0 3 0x4000082 thrsleep syz-fuzzer 19773 485236 75076 0 3 0x4000082 thrsleep syz-fuzzer 19773 135279 75076 0 3 0x4000082 kqread syz-fuzzer 19773 409564 75076 0 3 0x4000082 thrsleep syz-fuzzer 19773 362916 75076 0 3 0x4000082 thrsleep syz-fuzzer 19773 7714 75076 0 3 0x4000082 nanosleep syz-fuzzer 75076 128749 29089 0 3 0x10008a pause ksh 29089 52115 61438 0 2 0x12 sshd 41820 483899 1 0 3 0x100083 ttyin getty 61438 186046 1 0 3 0x80 select sshd 53596 457135 4793 74 3 0x100092 bpf pflogd 4793 381721 1 0 3 0x80 netio pflogd 87840 355484 60846 73 3 0x100090 kqread syslogd 60846 143220 1 0 3 0x100082 netio syslogd 2532 116658 1 77 3 0x100090 poll dhclient 21925 343277 1 0 3 0x80 poll dhclient 76388 65646 0 0 3 0x14200 bored smr 83551 183639 0 0 3 0x14200 pgzero zerothread 43263 335197 0 0 3 0x14200 aiodoned aiodoned 77539 164197 0 0 3 0x14200 syncer update 77785 88777 0 0 3 0x14200 cleaner cleaner 58990 89298 0 0 3 0x14200 reaper reaper 8568 260588 0 0 3 0x14200 pgdaemon pagedaemon 8335 378189 0 0 3 0x14200 bored crynlk 51263 272909 0 0 3 0x14200 bored crypto 15510 515746 0 0 3 0x40014200 acpi0 acpi0 31501 191012 0 0 3 0x40014200 idle1 *14233 152330 0 0 7 0x14200 softnet 22794 480141 0 0 3 0x14200 bored systqmp 66040 397575 0 0 3 0x14200 bored systq 22562 444191 0 0 3 0x40014200 bored softclock 6658 267645 0 0 3 0x40014200 idle0 1 227860 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 73007 (syz-executor.1) thread 0xffff800020ecfae8 (293327) exclusive rrwlock inode r = 0 (0xfffffd8068e3f2c0) #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 ufs_ihashins+0x45 sys/ufs/ufs/ufs_ihash.c:140 #4 ffs_vget+0x13e sys/ufs/ffs/ffs_vfsops.c:1358 #5 ffs_inode_alloc+0x1cf sys/ufs/ffs/ffs_alloc.c:392 #6 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1162 #7 VOP_MKDIR+0xc6 sys/kern/vfs_vops.c:450 #8 domkdirat+0x121 sys/kern/vfs_syscalls.c:3051 #9 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #9 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #10 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8068e3f700) #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 domkdirat+0x75 sys/kern/vfs_syscalls.c:3036 #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 14233 (softnet) thread 0xffff800020e189c0 (152330) exclusive rwlock netlock r = 0 (0xffffffff82537c48) #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+0x85 sys/net/if.c:943 #2 ifiq_process+0x80 sys/net/ifq.c:646 #3 taskq_thread+0x9c sys/kern/kern_task.c:369 #4 proc_trampoline+0x1c shared rwlock softnet r = 0 (0xffff80000002b0e0) #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+0x8f sys/kern/kern_task.c:368 #2 proc_trampoline+0x1c ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9484 6402K 6919K 78643K 10795 0 pcb 13 8K 8K 78643K 45 0 rtable 105 3K 3K 78643K 209 0 ifaddr 50 11K 11K 78643K 58 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 45 0 ioctlops 0 0K 4K 78643K 1475 0 iov 0 0K 2K 78643K 2 0 mount 1 1K 1K 78643K 1 0 vnodes 1228 77K 77K 78643K 1290 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 0K 78643K 17 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 92 0 sigio 0 0K 0K 78643K 2 0 proc 59 63K 83K 78643K 438 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 13 0 in_multi 37 2K 2K 78643K 51 0 ether_multi 1 0K 0K 78643K 7 0 mrt 0 0K 0K 78643K 2 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 55 254K 254K 78643K 55 0 exec 0 0K 1K 78643K 211 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 120 38K 39K 78643K 1230 0 UVM aobj 2 2K 2K 78643K 2 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 28 0 NDP 7 0K 0K 78643K 12 0 temp 71 3032K 3096K 78643K 3549 0 kqueue 3 4K 6K 78643K 4 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 80 21 0 19 1 0 1 1 0 8 0 rtentry 112 45 0 1 2 0 2 2 0 8 0 unpcb 120 39 0 29 1 0 1 1 0 8 0 syncache 264 4 0 4 2 2 0 1 0 8 0 tcpqe 32 412 0 412 1 1 0 1 0 8 0 tcpcb 544 44 0 40 1 0 1 1 0 8 0 inpcb 280 131 0 124 3 1 2 2 0 8 1 nd6 48 6 0 0 1 0 1 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 pfstitem 24 16 0 5 1 0 1 1 0 8 0 pfstkey 112 16 0 5 1 0 1 1 0 8 0 pfstate 328 16 0 5 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 256 188 0 0 12 0 12 12 0 8 0 art_table 32 189 0 0 2 0 2 2 0 8 0 art_node 16 44 0 4 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 13 0 3 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1505 0 98 89 0 89 89 0 8 0 ffsino 272 1505 0 98 95 1 94 94 0 8 0 nchpl 144 1798 0 188 60 0 60 60 0 8 0 uvmvnodes 72 1606 0 0 30 0 30 30 0 8 0 vnodes 208 1606 0 0 85 0 85 85 0 8 0 namei 1024 4861 0 4860 3 2 1 1 0 8 0 percpumem 16 33 0 1 1 0 1 1 0 8 0 vcpupl 1984 2 0 0 1 0 1 1 0 8 0 vmpool 560 2 0 0 1 0 1 1 0 8 0 scxspl 192 4793 0 4793 8 7 1 7 0 8 1 plimitpl 152 19 0 11 1 0 1 1 0 8 0 sigapl 424 307 0 276 4 0 4 4 0 8 0 futexpl 56 1042 0 1041 2 1 1 1 0 8 0 knotepl 112 62 0 43 1 0 1 1 0 8 0 kqueuepl 144 12 0 10 1 0 1 1 0 8 0 pipelkpl 48 150 0 139 1 0 1 1 0 8 0 pipepl 120 300 0 279 2 0 2 2 0 8 1 fdescpl 496 292 0 276 3 0 3 3 0 8 0 filepl 152 1726 0 1622 7 1 6 6 0 8 2 lockfpl 104 27 0 26 1 0 1 1 0 8 0 lockfspl 48 10 0 9 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 18 0 7 1 0 1 1 0 8 0 ucredpl 96 179 0 170 1 0 1 1 0 8 0 zombiepl 144 276 0 276 2 1 1 1 0 8 1 processpl 984 307 0 276 6 1 5 5 0 8 0 procpl 624 458 0 416 4 0 4 4 0 8 0 sockpl 400 191 0 172 5 2 3 3 0 8 1 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 210 0 0 26 0 26 26 0 8 0 mtagpl 80 12 0 0 1 0 1 1 0 8 0 mbufpl 256 213 0 0 13 0 13 13 0 8 0 bufpl 280 3418 0 132 235 0 235 235 0 8 0 anonpl 16 42175 0 27814 59 1 58 58 0 124 0 amapchunkpl 152 1542 0 1400 9 2 7 8 0 158 0 amappl16 192 1138 0 364 39 0 39 39 0 8 0 amappl15 184 2 0 1 1 0 1 1 0 8 0 amappl14 176 53 0 45 1 0 1 1 0 8 0 amappl13 168 38 0 33 1 0 1 1 0 8 0 amappl12 160 7 0 6 2 1 1 1 0 8 0 amappl11 152 58 0 43 1 0 1 1 0 8 0 amappl10 144 56 0 49 1 0 1 1 0 8 0 amappl9 136 395 0 393 1 0 1 1 0 8 0 amappl8 128 356 0 324 2 0 2 2 0 8 0 amappl7 120 151 0 140 1 0 1 1 0 8 0 amappl6 112 26 0 20 1 0 1 1 0 8 0 amappl5 104 199 0 183 1 0 1 1 0 8 0 amappl4 96 486 0 456 1 0 1 1 0 8 0 amappl3 88 122 0 116 1 0 1 1 0 8 0 amappl2 80 1379 0 1309 2 0 2 2 0 8 0 amappl1 72 16300 0 15862 23 13 10 18 0 8 0 amappl 80 717 0 670 3 1 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 1 0 0 1 0 1 1 0 8 0 uaddrrnd 24 294 0 276 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 294 0 276 1 0 1 1 0 8 0 vmmpekpl 168 6693 0 6658 2 0 2 2 0 8 0 vmmpepl 168 42541 0 40606 116 26 90 104 0 357 0 vmsppl 368 293 0 276 2 0 2 2 0 8 0 pdppl 4096 596 0 554 6 0 6 6 0 8 0 pvpl 32 147649 0 130071 147 3 144 144 0 265 1 pmappl 232 293 0 276 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 267 0 8 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff824e0ff0) 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_cmp4(7a776,7a775) at __sanitizer_cov_trace_cmp4+0x10 sys/dev/kcov.c:134 __mp_lock(ffffffff82669968) at __mp_lock+0x139 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82669968) at __mp_lock+0x139 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff82669968,1) at __mp_acquire_count+0x51 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x392 sys/kern/sched_bsd.c:435 sleep_finish(ffff800020f6f1e0,1) at sleep_finish+0x113 sys/kern/kern_synch.c:418 sleep_finish_all(ffff800020f6f1e0,1) at sleep_finish_all+0x32 sleep_finish_timeout sys/kern/kern_synch.c:447 [inline] sleep_finish_all(ffff800020f6f1e0,1) at sleep_finish_all+0x32 sys/kern/kern_synch.c:393 tsleep(ffffffff826389e8,120,ffffffff821f18d1,2) at tsleep+0x1cc sys/kern/kern_synch.c:155 sys_nanosleep(ffff800020e6c758,ffff800020f6f310,ffff800020f6f360) at sys_nanosleep+0x205 sys/kern/kern_time.c:297 syscall(ffff800020f6f3e0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020f6f3e0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc0180, count: 2 ddb{0}> trace x86_ipi_db(ffffffff824e0ff0) 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_cmp4(7a776,7a775) at __sanitizer_cov_trace_cmp4+0x10 sys/dev/kcov.c:134 __mp_lock(ffffffff82669968) at __mp_lock+0x139 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82669968) at __mp_lock+0x139 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff82669968,1) at __mp_acquire_count+0x51 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x392 sys/kern/sched_bsd.c:435 sleep_finish(ffff800020f6f1e0,1) at sleep_finish+0x113 sys/kern/kern_synch.c:418 sleep_finish_all(ffff800020f6f1e0,1) at sleep_finish_all+0x32 sleep_finish_timeout sys/kern/kern_synch.c:447 [inline] sleep_finish_all(ffff800020f6f1e0,1) at sleep_finish_all+0x32 sys/kern/kern_synch.c:393 tsleep(ffffffff826389e8,120,ffffffff821f18d1,2) at tsleep+0x1cc sys/kern/kern_synch.c:155 sys_nanosleep(ffff800020e6c758,ffff800020f6f310,ffff800020f6f360) at sys_nanosleep+0x205 sys/kern/kern_time.c:297 syscall(ffff800020f6f3e0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020f6f3e0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc0180, count: -13 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(ffffffff821fb01b) at panic+0x15c sys/kern/subr_prf.c:207 pool_cache_get(ffffffff82645f90) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline] pool_cache_get(ffffffff82645f90) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884 pool_get(ffffffff82645f90,2) 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(ffff800000a0b980) at tcp_output+0x14e6 tcp_input(ffff800020e39478,ffff800020e39484,6,2) at tcp_input+0x2356 ip_deliver(ffff800020e39478,ffff800020e39484,6,2) at ip_deliver+0x353 sys/netinet/ip_input.c:668 ip_ours(ffff800020e39478,ffff800020e39484,ffff800020e189c0,0) at ip_ours+0x412 ip_input_if(ffff800020e39478,ffff800020e39484,4,0,ffff80000017b2a8) at ip_input_if+0x6ce ipv4_input(ffff80000017b2a8,fffffd806a286d00) at ipv4_input+0x48 sys/netinet/ip_input.c:215 ether_input(ffff80000017b2a8,fffffd806a286d00,0) at ether_input+0x345 sys/net/if_ethersubr.c:461 if_input_process(ffff80000017b2a8,ffff800020e395a8) at if_input_process+0x10b if_ih_input sys/net/if.c:910 [inline] if_input_process(ffff80000017b2a8,ffff800020e395a8) at if_input_process+0x10b sys/net/if.c:944 ifiq_process(ffff80000017b6a0) at ifiq_process+0x80 sys/net/ifq.c:646 end trace frame: 0xffff800020e39660, count: 0 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff821fb01b) at panic+0x15c sys/kern/subr_prf.c:207 pool_cache_get(ffffffff82645f90) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline] pool_cache_get(ffffffff82645f90) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884 pool_get(ffffffff82645f90,2) 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(ffff800000a0b980) at tcp_output+0x14e6 tcp_input(ffff800020e39478,ffff800020e39484,6,2) at tcp_input+0x2356 ip_deliver(ffff800020e39478,ffff800020e39484,6,2) at ip_deliver+0x353 sys/netinet/ip_input.c:668 ip_ours(ffff800020e39478,ffff800020e39484,ffff800020e189c0,0) at ip_ours+0x412 ip_input_if(ffff800020e39478,ffff800020e39484,4,0,ffff80000017b2a8) at ip_input_if+0x6ce ipv4_input(ffff80000017b2a8,fffffd806a286d00) at ipv4_input+0x48 sys/netinet/ip_input.c:215 ether_input(ffff80000017b2a8,fffffd806a286d00,0) at ether_input+0x345 sys/net/if_ethersubr.c:461 if_input_process(ffff80000017b2a8,ffff800020e395a8) at if_input_process+0x10b if_ih_input sys/net/if.c:910 [inline] if_input_process(ffff80000017b2a8,ffff800020e395a8) at if_input_process+0x10b sys/net/if.c:944 ifiq_process(ffff80000017b6a0) at ifiq_process+0x80 sys/net/ifq.c:646 taskq_thread(ffff80000002b080) at taskq_thread+0x9c sys/kern/kern_task.c:369 end trace frame: 0x0, count: -15