panic: pool_cache_item_magic_check: mbufpl cpu free list modified: item addr 0xfffffd806d7fdd00+16 0x0!=0x24bb0c10fcb05a23 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 488738 22052 0 0x2 0x80 0 syz-executor.0 *270116 97779 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(ffff800000adade0) at tcp_output+0x14e6 tcp_input(ffff800020da96d8,ffff800020da96e4,6,2) at tcp_input+0x2356 ip_deliver(ffff800020da96d8,ffff800020da96e4,6,2) at ip_deliver+0x353 sys/netinet/ip_input.c:668 ip_ours(ffff800020da96d8,ffff800020da96e4,0,0) at ip_ours+0x412 ip_input_if(ffff800020da96d8,ffff800020da96e4,4,0,ffff80000017c2a8) at ip_input_if+0x6ce ipv4_input(ffff80000017c2a8,fffffd806d5e8600) at ipv4_input+0x48 sys/netinet/ip_input.c:215 if_input_process(ffff80000017c2a8,ffff800020da9778) 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 0xfffffd806d7fdd00+16 0x0!=0x24bb0c10fcb05a23 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(ffff800000adade0) at tcp_output+0x14e6 tcp_input(ffff800020da96d8,ffff800020da96e4,6,2) at tcp_input+0x2356 ip_deliver(ffff800020da96d8,ffff800020da96e4,6,2) at ip_deliver+0x353 sys/netinet/ip_input.c:668 ip_ours(ffff800020da96d8,ffff800020da96e4,0,0) at ip_ours+0x412 ip_input_if(ffff800020da96d8,ffff800020da96e4,4,0,ffff80000017c2a8) at ip_input_if+0x6ce ipv4_input(ffff80000017c2a8,fffffd806d5e8600) at ipv4_input+0x48 sys/netinet/ip_input.c:215 if_input_process(ffff80000017c2a8,ffff800020da9778) 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 0xffff800020da8fd0 rbx 0xffff800020da9080 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffff800020da8f90 r9 0xffffffff82193d9f kprintf+0x16f r10 0x1 r11 0x6562aeb82fe65a35 r12 0x3000000008 r13 0xffff800020da8fe0 r14 0x100 r15 0x1 rip 0xffffffff820d5aa8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020da8fc0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (softnet) pid=270116 stat=onproc flags process=14000 proc=200 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020d88000,0xffff800020d88500 process=0xffff800020d8abd0 user=0xffff800020da4000, vmspace=0xffffffff82920c28 estcpu=0, cpticks=2, pctcpu=1.45 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 99589 159491 0 0 3 0x14200 bored sosplice 1155 142416 7272 0 2 0x2 syz-executor.1 22052 488738 7272 0 7 0x82 syz-executor.0 7272 61994 81348 0 3 0x82 thrsleep syz-fuzzer 7272 403930 81348 0 2 0x4000482 syz-fuzzer 7272 484332 81348 0 2 0x4000002 syz-fuzzer 7272 474407 81348 0 3 0x4000082 thrsleep syz-fuzzer 7272 17576 81348 0 3 0x4000082 thrsleep syz-fuzzer 7272 227303 81348 0 3 0x4000082 thrsleep syz-fuzzer 7272 278027 81348 0 3 0x4000082 thrsleep syz-fuzzer 7272 169303 81348 0 2 0x4000002 syz-fuzzer 81348 100911 67120 0 3 0x10008a pause ksh 67120 136010 80876 0 2 0x12 sshd 6552 367544 1 0 3 0x100083 ttyin getty 80876 320392 1 0 3 0x80 select sshd 57980 201634 48039 74 3 0x100092 bpf pflogd 48039 294935 1 0 3 0x80 netio pflogd 44965 217548 74439 73 3 0x100090 kqread syslogd 74439 241897 1 0 3 0x100082 netio syslogd 15096 442243 1 77 3 0x100090 poll dhclient 7449 512446 1 0 3 0x80 poll dhclient 62946 157202 0 0 2 0x40014200 smr 38067 40055 0 0 2 0x14200 zerothread 84694 261591 0 0 3 0x14200 aiodoned aiodoned 54820 474902 0 0 3 0x14200 syncer update 38041 417766 0 0 3 0x14200 cleaner cleaner 74476 402414 0 0 3 0x14200 reaper reaper 99636 344625 0 0 3 0x14200 pgdaemon pagedaemon 26809 159416 0 0 3 0x14200 bored crynlk 57718 518888 0 0 3 0x14200 bored crypto 63532 287219 0 0 3 0x40014200 acpi0 acpi0 79988 208092 0 0 3 0x40014200 idle1 *97779 270116 0 0 7 0x14200 softnet 99262 485980 0 0 3 0x14200 bored systqmp 15180 86722 0 0 3 0x14200 bored systq 24388 143976 0 0 3 0x40014200 bored softclock 99887 139524 0 0 3 0x40014200 idle0 1 124836 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 97779 (softnet) thread 0xffff800020d88278 (270116) 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 9488 6529K 6536K 78643K 10694 0 pcb 13 8K 8K 78643K 25 0 rtable 112 3K 4K 78643K 276 0 ifaddr 52 12K 12K 78643K 92 0 counters 43 33K 34K 78643K 57 0 ioctlops 0 0K 4K 78643K 1491 0 iov 0 0K 12K 78643K 8 0 mount 1 1K 1K 78643K 1 0 vnodes 1219 77K 77K 78643K 1264 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 4 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 26 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 4 9K 25K 78643K 140 0 sigio 0 0K 0K 78643K 4 0 proc 60 63K 95K 78643K 461 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 7 0 in_multi 44 2K 2K 78643K 66 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 37 175K 175K 78643K 37 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 152 25K 27K 78643K 1439 0 UVM aobj 12 2K 2K 78643K 12 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 12 0 NDP 7 0K 0K 78643K 22 0 temp 77 3861K 3925K 78643K 2438 0 kqueue 3 4K 18K 78643K 166 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 31 0 29 1 0 1 1 0 8 0 rtentry 112 55 0 9 2 0 2 2 0 8 0 unpcb 120 79 0 69 1 0 1 1 0 8 0 syncache 272 4 0 4 1 1 0 1 0 8 0 tcpqe 32 34 0 34 2 2 0 1 0 8 0 tcpcb 592 32 0 25 1 0 1 1 0 8 0 inpcb 296 149 0 141 2 0 2 2 0 8 1 nd6 48 12 0 5 1 0 1 1 0 8 0 pffrag 232 1 0 0 1 0 1 1 0 482 0 pffrnode 88 1 0 0 1 0 1 1 0 8 0 pffrent 40 2 0 1 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 15 0 1 1 0 1 1 0 8 0 pfstkey 112 15 0 1 1 0 1 1 0 8 0 pfstate 328 15 0 1 2 0 2 2 0 8 0 pfrule 1360 22 0 19 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 52 0 11 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 2 1 0 1 1 0 8 1 semupl 112 5 0 5 1 0 1 1 0 8 1 semapl 112 22 0 12 1 0 1 1 0 8 0 shmpl 112 9 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1567 0 165 88 0 88 88 0 8 0 ffsino 272 1567 0 165 94 0 94 94 0 8 0 nchpl 144 1976 0 368 60 0 60 60 0 8 0 uvmvnodes 72 1636 0 0 30 0 30 30 0 8 0 vnodes 208 1636 0 0 87 0 87 87 0 8 0 namei 1024 5129 0 5129 1 0 1 1 0 8 1 percpumem 16 39 0 7 1 0 1 1 0 8 0 vmpool 560 4 0 4 1 0 1 1 0 8 1 scsiplug 72 1 0 1 1 0 1 1 0 8 1 scxspl 200 5712 0 5712 8 3 5 7 0 8 5 plimitpl 152 19 0 11 1 0 1 1 0 8 0 sigapl 424 356 0 325 4 0 4 4 0 8 0 futexpl 56 1592 0 1592 1 0 1 1 0 8 1 knotepl 112 208 0 188 1 0 1 1 0 8 0 kqueuepl 152 156 0 154 1 0 1 1 0 8 0 pipepl 304 94 0 83 2 0 2 2 0 8 1 fdescpl 496 340 0 325 3 0 3 3 0 8 0 filepl 152 1851 0 1749 5 0 5 5 0 8 1 lockfpl 104 19 0 18 1 0 1 1 0 8 0 lockfspl 48 9 0 8 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 94 0 85 1 0 1 1 0 8 0 zombiepl 144 325 0 325 1 0 1 1 0 8 1 processpl 1008 356 0 325 5 0 5 5 0 8 0 procpl 632 631 0 593 4 0 4 4 0 8 0 sosppl 144 1 0 1 1 0 1 1 0 8 1 sockpl 400 259 0 239 4 0 4 4 0 8 1 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 4 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 183 0 0 22 0 22 22 0 8 0 mtagpl 96 8 0 0 1 0 1 1 0 8 0 mbufpl 256 198 0 0 12 0 12 12 0 8 0 bufpl 280 3491 0 127 241 0 241 241 0 8 0 anonpl 16 55080 0 36943 90 1 89 89 0 124 15 amapchunkpl 152 2093 0 1784 20 2 18 18 0 158 4 amappl16 192 1571 0 752 52 3 49 52 0 8 7 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 6 0 3 1 0 1 1 0 8 0 amappl13 168 139 0 133 1 0 1 1 0 8 0 amappl12 160 85 0 79 1 0 1 1 0 8 0 amappl11 152 58 0 43 1 0 1 1 0 8 0 amappl10 144 28 0 22 1 0 1 1 0 8 0 amappl9 136 359 0 358 1 0 1 1 0 8 0 amappl8 128 330 0 299 2 0 2 2 0 8 0 amappl7 120 116 0 103 1 0 1 1 0 8 0 amappl6 112 30 0 25 1 0 1 1 0 8 0 amappl5 104 200 0 185 1 0 1 1 0 8 0 amappl4 96 595 0 564 1 0 1 1 0 8 0 amappl3 88 183 0 173 1 0 1 1 0 8 0 amappl2 80 1775 0 1715 2 0 2 2 0 8 0 amappl1 72 18684 0 18262 23 13 10 18 0 8 0 amappl 80 923 0 848 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 11 0 0 1 0 1 1 0 8 0 uaddrrnd 24 344 0 329 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 344 0 329 1 0 1 1 0 8 0 vmmpekpl 168 6794 0 6760 2 0 2 2 0 8 0 vmmpepl 168 50614 0 48706 121 7 114 114 0 357 24 vmsppl 368 343 0 329 2 0 2 2 0 8 0 pdppl 4096 695 0 658 6 0 6 6 0 8 1 pvpl 32 174690 0 153497 209 0 209 209 0 265 34 pmappl 232 343 0 329 2 0 2 2 0 8 1 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 254 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_cmp4(ffffffff828d0690,ffffffff828d0690) at __sanitizer_cov_trace_cmp4+0xb kd_curproc sys/dev/kcov.c:162 [inline] __sanitizer_cov_trace_cmp4(ffffffff828d0690,ffffffff828d0690) at __sanitizer_cov_trace_cmp4+0xb trace_cmp sys/dev/kcov.c:134 [inline] __sanitizer_cov_trace_cmp4(ffffffff828d0690,ffffffff828d0690) at __sanitizer_cov_trace_cmp4+0xb sys/dev/kcov.c:163 __mp_acquire_count(ffffffff828d0690,1) 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(ffff800020edc7a0,1) at sleep_finish+0x113 sys/kern/kern_synch.c:418 sleep_finish_all(ffff800020edc7a0,1) at sleep_finish_all+0x32 sleep_finish_timeout sys/kern/kern_synch.c:447 [inline] sleep_finish_all(ffff800020edc7a0,1) at sleep_finish_all+0x32 sys/kern/kern_synch.c:393 rwsleep(fffffd807eaa7410,fffffd807eaa7490,110,ffffffff824898d6,0) at rwsleep+0x11b sys/kern/kern_synch.c:313 pipe_iosleep(fffffd807eaa7410,ffffffff824898d6) at pipe_iosleep+0xad sys/kern/sys_pipe.c:348 pipe_read(fffffd806ca9dc88,ffff800020edc9a8,0) at pipe_read+0x290 sys/kern/sys_pipe.c:446 dofilereadv(ffff800020dd6280,f9,ffff800020edc9a8,0,ffff800020edca90) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020dd6280,ffff800020edca40,ffff800020edca90) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020edcb10) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020edcb10) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 end trace frame: 0xffff800020edcb90, count: 0 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_cmp4(ffffffff828d0690,ffffffff828d0690) at __sanitizer_cov_trace_cmp4+0xb kd_curproc sys/dev/kcov.c:162 [inline] __sanitizer_cov_trace_cmp4(ffffffff828d0690,ffffffff828d0690) at __sanitizer_cov_trace_cmp4+0xb trace_cmp sys/dev/kcov.c:134 [inline] __sanitizer_cov_trace_cmp4(ffffffff828d0690,ffffffff828d0690) at __sanitizer_cov_trace_cmp4+0xb sys/dev/kcov.c:163 __mp_acquire_count(ffffffff828d0690,1) 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(ffff800020edc7a0,1) at sleep_finish+0x113 sys/kern/kern_synch.c:418 sleep_finish_all(ffff800020edc7a0,1) at sleep_finish_all+0x32 sleep_finish_timeout sys/kern/kern_synch.c:447 [inline] sleep_finish_all(ffff800020edc7a0,1) at sleep_finish_all+0x32 sys/kern/kern_synch.c:393 rwsleep(fffffd807eaa7410,fffffd807eaa7490,110,ffffffff824898d6,0) at rwsleep+0x11b sys/kern/kern_synch.c:313 pipe_iosleep(fffffd807eaa7410,ffffffff824898d6) at pipe_iosleep+0xad sys/kern/sys_pipe.c:348 pipe_read(fffffd806ca9dc88,ffff800020edc9a8,0) at pipe_read+0x290 sys/kern/sys_pipe.c:446 dofilereadv(ffff800020dd6280,f9,ffff800020edc9a8,0,ffff800020edca90) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020dd6280,ffff800020edca40,ffff800020edca90) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020edcb10) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020edcb10) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd7180, count: -15 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(ffff800000adade0) at tcp_output+0x14e6 tcp_input(ffff800020da96d8,ffff800020da96e4,6,2) at tcp_input+0x2356 ip_deliver(ffff800020da96d8,ffff800020da96e4,6,2) at ip_deliver+0x353 sys/netinet/ip_input.c:668 ip_ours(ffff800020da96d8,ffff800020da96e4,0,0) at ip_ours+0x412 ip_input_if(ffff800020da96d8,ffff800020da96e4,4,0,ffff80000017c2a8) at ip_input_if+0x6ce ipv4_input(ffff80000017c2a8,fffffd806d5e8600) at ipv4_input+0x48 sys/netinet/ip_input.c:215 if_input_process(ffff80000017c2a8,ffff800020da9778) 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(ffff800000adade0) at tcp_output+0x14e6 tcp_input(ffff800020da96d8,ffff800020da96e4,6,2) at tcp_input+0x2356 ip_deliver(ffff800020da96d8,ffff800020da96e4,6,2) at ip_deliver+0x353 sys/netinet/ip_input.c:668 ip_ours(ffff800020da96d8,ffff800020da96e4,0,0) at ip_ours+0x412 ip_input_if(ffff800020da96d8,ffff800020da96e4,4,0,ffff80000017c2a8) at ip_input_if+0x6ce ipv4_input(ffff80000017c2a8,fffffd806d5e8600) at ipv4_input+0x48 sys/netinet/ip_input.c:215 if_input_process(ffff80000017c2a8,ffff800020da9778) 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