uvm_fault(0xffffffff828bad10, 0xfffffd0000000010, 0, 1) -> e kernel: page fault trap, code=0 Stopped at pool_cache_get+0x1b1: movq 0x10(%r14),%r13 ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic kernel page fault uvm_fault(0xffffffff828bad10, 0xfffffd0000000010, 0, 1) -> e pool_cache_get(ffffffff828dabc8) at pool_cache_get+0x1b1 pool_cache_item_magic_check sys/kern/subr_pool.c:1770 [inline] pool_cache_get(ffffffff828dabc8) at pool_cache_get+0x1b1 sys/kern/subr_pool.c:1884 end trace frame: 0xffff800020e239d0, count: 0 ddb{1}> trace pool_cache_get(ffffffff828dabc8) at pool_cache_get+0x1b1 pool_cache_item_magic_check sys/kern/subr_pool.c:1770 [inline] pool_cache_get(ffffffff828dabc8) at pool_cache_get+0x1b1 sys/kern/subr_pool.c:1884 pool_get(ffffffff828dabc8,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_copym(fffffd8064c05a00,580,580,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] m_copym(fffffd8064c05a00,580,580,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667 tcp_output(ffff800000ad8320) at tcp_output+0x15ba sys/netinet/tcp_output.c:673 tcp_usrreq(fffffd806eae67d8,9,fffffd8064c05a00,0,0,ffff800020e4d4f0) at tcp_usrreq+0xa55 sosend(fffffd806eae67d8,0,ffff800020e23e68,0,0,80) at sosend+0x671 sys/kern/uipc_socket.c:555 dofilewritev(ffff800020e4d4f0,4,ffff800020e23e68,0,ffff800020e23f50) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_write(ffff800020e4d4f0,ffff800020e23f00,ffff800020e23f50) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800020e23fd0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e23fd0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff4110, count: -10 ddb{1}> show registers rdi 0 rsi 0x7 rbp 0xffff800020e23910 rbx 0x98638ba08c00e2d3 rdx 0x580 rcx 0 rax 0 r8 0xffffffff820290da tcp_output+0xbea r9 0x5 r10 0x3 r11 0x97c553ec870d6ec2 r12 0xffffffff828dabc8 mbpool r13 0 r14 0xfffffd0000000000 r15 0xfffffd807f007e80 rip 0xffffffff812aa931 pool_cache_get+0x1b1 cs 0x8 rflags 0x10282 __ALIGN_SIZE+0xf282 rsp 0xffff800020e238b0 ss 0x10 pool_cache_get+0x1b1: movq 0x10(%r14),%r13 ddb{1}> show proc PROC (sshd) pid=67056 stat=onproc flags process=12 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020e4d010,0xffff800020e4dec0 process=0xffff8000ffffe3f8 user=0xffff800020e1f000, vmspace=0xfffffd806e8f88a8 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 20820 166175 12875 0 2 0 syz-executor.0 20820 332301 12875 0 3 0x4000080 fsleep syz-executor.0 74824 206801 0 0 3 0x14280 nfsidl nfsio 87663 226775 0 0 3 0x14280 nfsidl nfsio 28769 430087 0 0 3 0x14280 nfsidl nfsio 67151 153259 0 0 3 0x14280 nfsidl nfsio 85172 152711 0 0 3 0x14280 nfsidl nfsio 63787 102339 0 0 3 0x14280 nfsidl nfsio 44869 186373 0 0 3 0x14280 nfsidl nfsio 86839 67951 0 0 3 0x14280 nfsidl nfsio 48655 64769 0 0 3 0x14280 nfsidl nfsio 7084 112860 0 0 3 0x14280 nfsidl nfsio 92738 514623 0 0 3 0x14280 nfsidl nfsio 77710 245348 0 0 3 0x14280 nfsidl nfsio 50872 3934 0 0 3 0x14280 nfsidl nfsio 11695 40901 0 0 3 0x14280 nfsidl nfsio 57757 189868 0 0 3 0x14280 nfsidl nfsio 96691 294525 0 0 3 0x14280 nfsidl nfsio 49069 66416 0 0 3 0x14280 nfsidl nfsio 79553 418602 0 0 3 0x14280 nfsidl nfsio 75950 72435 0 0 3 0x14280 nfsidl nfsio 21352 515947 0 0 3 0x14280 nfsidl nfsio 16221 408157 0 0 3 0x14200 bored sosplice 21764 144029 34116 0 3 0x2 biowait syz-executor.1 12875 233541 34116 0 3 0x82 nanosleep syz-executor.0 34116 372353 99844 0 3 0x82 thrsleep syz-fuzzer 34116 18605 99844 0 3 0x4000082 nanosleep syz-fuzzer 34116 428450 99844 0 3 0x4000082 thrsleep syz-fuzzer 34116 226482 99844 0 3 0x4000082 thrsleep syz-fuzzer 34116 514091 99844 0 3 0x4000082 nanosleep syz-fuzzer 34116 80963 99844 0 3 0x4000082 thrsleep syz-fuzzer 34116 35298 99844 0 3 0x4000082 kqread syz-fuzzer 34116 191211 99844 0 3 0x4000082 thrsleep syz-fuzzer 34116 256008 99844 0 3 0x4000082 thrsleep syz-fuzzer 34116 61261 99844 0 3 0x4000082 thrsleep syz-fuzzer 99844 73026 15281 0 3 0x10008a pause ksh *15281 67056 59601 0 7 0x12 sshd 59144 513090 1 0 3 0x100083 ttyin getty 59601 159197 1 0 3 0x80 select sshd 91839 77076 81364 74 3 0x100092 bpf pflogd 81364 516478 1 0 3 0x80 netio pflogd 33879 356369 39639 73 3 0x100090 kqread syslogd 39639 437590 1 0 3 0x100082 netio syslogd 18175 122206 1 77 3 0x100090 poll dhclient 16746 10842 1 0 3 0x80 poll dhclient 87339 374624 0 0 3 0x14200 bored smr 89841 233062 0 0 3 0x14200 pgzero zerothread 89143 86625 0 0 3 0x14200 aiodoned aiodoned 71255 366561 0 0 3 0x14200 syncer update 92176 72812 0 0 3 0x14200 cleaner cleaner 60366 48779 0 0 3 0x14200 reaper reaper 29835 301746 0 0 3 0x14200 pgdaemon pagedaemon 28105 40757 0 0 3 0x14200 bored crynlk 38543 318941 0 0 3 0x14200 bored crypto 83713 381542 0 0 3 0x40014200 acpi0 acpi0 85254 261333 0 0 3 0x40014200 idle1 65599 45680 0 0 7 0x14200 softnet 65143 311723 0 0 3 0x14200 bored systqmp 92046 427839 0 0 3 0x14200 bored systq 7440 306848 0 0 3 0x40014200 bored softclock 82059 316340 0 0 3 0x40014200 idle0 1 183488 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 21764 (syz-executor.1) thread 0xffff800020e04398 (144029) exclusive rrwlock inode r = 0 (0xfffffd80642791a8) #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 (0xfffffd80687f72c0) #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 15281 (sshd) thread 0xffff800020e4d4f0 (67056) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff828dfa20) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 #2 kerntrap+0xec sys/arch/amd64/amd64/trap.c:302 #3 alltraps_kern_meltdown+0x7b #4 pool_cache_get+0x1b1 pool_cache_item_magic_check sys/kern/subr_pool.c:1770 [inline] #4 pool_cache_get+0x1b1 sys/kern/subr_pool.c:1884 #5 pool_get+0x91 sys/kern/subr_pool.c:572 #6 m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] #6 m_copym+0x174 sys/kern/uipc_mbuf.c:667 #7 tcp_output+0x15ba sys/netinet/tcp_output.c:673 #8 tcp_usrreq+0xa55 #9 sosend+0x671 sys/kern/uipc_socket.c:555 #10 dofilewritev+0x1b6 sys/kern/sys_generic.c:365 #11 sys_write+0x83 sys/kern/sys_generic.c:285 #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 exclusive rwlock netlock r = 0 (0xffffffff827a7818) #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 Process 65599 (softnet) thread 0xffff800020d88270 (45680) 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:436 #2 proc_trampoline+0x1c ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9520 6415K 7056K 78643K 13144 0 pcb 13 8K 8K 78643K 683 0 rtable 102 10K 10K 78643K 467 0 ifaddr 86 17K 19K 78643K 308 0 sysctl 2 0K 0K 78643K 2 0 counters 41 33K 34K 78643K 73 0 ioctlops 0 0K 4K 78643K 1692 0 iov 0 0K 32K 78643K 75 0 mount 1 1K 1K 78643K 1 0 vnodes 1219 77K 77K 78643K 2005 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 15 0 VM map 2 1K 1K 78643K 2 0 sem 12 1K 1K 78643K 34 0 dirhash 9 1K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 1310 0 sigio 0 0K 0K 78643K 9 0 proc 61 63K 95K 78643K 472 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 56 0 in_multi 78 3K 3K 78643K 131 0 ether_multi 1 0K 0K 78643K 10 0 mrt 0 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 49 228K 228K 78643K 49 0 exec 0 0K 1K 78643K 231 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 138 56K 57K 78643K 4847 0 UVM aobj 31 2K 2K 78643K 37 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 45 0 NDP 12 0K 0K 78643K 33 0 temp 131 3874K 3952K 78643K 12832 0 kqueue 3 4K 14K 78643K 36 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 2 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 43 0 41 1 0 1 1 0 8 0 rtentry 112 52 0 27 2 0 2 2 0 8 0 unpcb 120 1663 0 1652 1 0 1 1 0 8 0 syncache 264 8 0 8 3 3 0 1 0 8 0 tcpqe 32 474 0 474 2 2 0 1 0 8 0 tcpcb 544 237 0 232 2 1 1 2 0 8 0 inpcb 296 2396 0 2388 5 3 2 2 0 8 1 nd6 48 8 0 5 1 0 1 1 0 8 0 ppxss 1136 1 0 1 1 1 0 1 0 8 0 pfstscr 40 4 0 4 1 1 0 1 0 8 0 pffrag 232 112 0 110 1 0 1 1 0 482 0 pffrnode 88 112 0 110 1 0 1 1 0 8 0 pffrent 40 4912 0 4910 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 pfrktable 1344 63 0 47 4 2 2 2 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfqueue 264 1 0 0 1 0 1 1 0 8 0 pfstitem 24 32 0 22 1 0 1 1 0 8 0 pfstkey 112 34 0 24 1 0 1 1 0 8 0 pfstate 328 32 0 22 3 1 2 3 0 8 0 pfrule 1360 94 0 76 3 1 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 274 0 140 12 0 12 12 0 8 0 art_table 32 275 0 140 2 0 2 2 0 8 0 art_node 16 51 0 31 1 0 1 1 0 8 0 sysvmsgpl 40 14 0 10 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 22 0 12 1 0 1 1 0 8 0 shmpl 112 34 0 6 1 0 1 1 0 8 0 dirhash 1024 17 0 10 3 1 2 3 0 8 0 dino2pl 256 2951 0 1547 89 0 89 89 0 8 0 ffsino 272 2951 0 1547 97 2 95 95 0 8 0 nchpl 144 4946 0 3330 60 0 60 60 0 8 0 uvmvnodes 72 3681 0 0 67 0 67 67 0 8 0 vnodes 208 3681 0 0 194 0 194 194 0 8 0 namei 1024 12981 0 12981 5 4 1 1 0 8 1 percpumem 16 47 0 16 1 0 1 1 0 8 0 vcpupl 1984 3 0 0 1 0 1 1 0 8 0 vmpool 560 3 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 66 0 52 2 1 1 1 0 8 0 scsiplug 64 24 0 24 1 0 1 1 0 8 1 scxspl 192 13894 0 13893 13 12 1 6 0 8 0 plimitpl 152 67 0 59 1 0 1 1 0 8 0 sigapl 424 1546 0 1494 6 0 6 6 0 8 0 futexpl 56 16382 0 16381 4 3 1 1 0 8 0 knotepl 112 100 0 81 1 0 1 1 0 8 0 kqueuepl 144 98 0 93 1 0 1 1 0 8 0 pipepl 304 205 0 195 3 2 1 2 0 8 0 fdescpl 496 1510 0 1494 3 0 3 3 0 8 0 filepl 152 9164 0 9064 8 3 5 6 0 8 1 lockfpl 104 163 0 162 1 0 1 1 0 8 0 lockfspl 48 56 0 55 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 83 0 72 1 0 1 1 0 8 0 ucredpl 96 667 0 658 1 0 1 1 0 8 0 zombiepl 144 1494 0 1494 3 2 1 1 0 8 1 processpl 992 1546 0 1494 8 1 7 7 0 8 0 procpl 624 4068 0 4006 7 1 6 6 0 8 1 sosppl 128 8 0 8 3 3 0 1 0 8 0 sockpl 400 4140 0 4119 9 5 4 4 0 8 1 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 13 0 0 2 0 2 2 0 8 0 mcl9k 9216 8 0 0 1 0 1 1 0 8 0 mcl8k 8192 15 0 0 2 0 2 2 0 8 0 mcl4k 4096 15 0 0 2 0 2 2 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 221 0 0 27 0 27 27 0 8 0 mtagpl 96 182 0 0 5 0 5 5 0 8 0 mbufpl 256 729 0 0 44 0 44 44 0 8 0 bufpl 280 5223 0 134 364 0 364 364 0 8 0 anonpl 16 146488 0 129960 101 25 76 78 0 124 8 amapchunkpl 152 8089 0 7949 35 24 11 20 0 158 5 amappl16 192 7211 0 6295 59 12 47 54 0 8 1 amappl15 184 1 0 1 1 1 0 1 0 8 0 amappl14 176 691 0 683 1 0 1 1 0 8 0 amappl13 168 28 0 25 1 0 1 1 0 8 0 amappl12 160 6 0 4 2 1 1 1 0 8 0 amappl11 152 58 0 42 1 0 1 1 0 8 0 amappl10 144 23 0 17 1 0 1 1 0 8 0 amappl9 136 392 0 390 1 0 1 1 0 8 0 amappl8 128 372 0 335 2 0 2 2 0 8 0 amappl7 120 125 0 112 1 0 1 1 0 8 0 amappl6 112 24 0 20 2 1 1 1 0 8 0 amappl5 104 1419 0 1403 1 0 1 1 0 8 0 amappl4 96 489 0 461 1 0 1 1 0 8 0 amappl3 88 802 0 794 1 0 1 1 0 8 0 amappl2 80 11200 0 11126 2 0 2 2 0 8 0 amappl1 72 53411 0 52963 23 13 10 18 0 8 0 amappl 80 4297 0 4250 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 36 0 6 1 0 1 1 0 8 0 uaddrrnd 24 1513 0 1494 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1513 0 1494 1 0 1 1 0 8 0 vmmpekpl 168 13489 0 13447 3 0 3 3 0 8 0 vmmpepl 168 198389 0 196281 130 31 99 116 0 357 5 vmsppl 368 1512 0 1494 2 0 2 2 0 8 0 pdppl 4096 3033 0 2991 7 1 6 6 0 8 0 pvpl 32 456508 0 436733 231 48 183 187 0 265 20 pmappl 232 1512 0 1494 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 318 0 18 9 0 9 9 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff82780ff0) 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(109851,109852) at __sanitizer_cov_trace_cmp4+0x44 kd_curproc sys/dev/kcov.c:411 [inline] __sanitizer_cov_trace_cmp4(109851,109852) at __sanitizer_cov_trace_cmp4+0x44 trace_cmp sys/dev/kcov.c:104 [inline] __sanitizer_cov_trace_cmp4(109851,109852) at __sanitizer_cov_trace_cmp4+0x44 sys/dev/kcov.c:135 __mp_lock(ffffffff828df818) at __mp_lock+0x139 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828df818) at __mp_lock+0x139 sys/kern/kern_lock.c:147 intr_handler(ffff800020da90b0,ffff80000004a400) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge17_untramp() at Xintr_ioapic_edge17_untramp+0x19f __mp_lock(ffffffff828df818) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828df818) at __mp_lock+0x127 sys/kern/kern_lock.c:147 if_qstart_compat(ffff80000017c520) at if_qstart_compat+0x1a sys/net/if.c:675 ifq_serialize(ffff80000017c520,ffff80000017c638) at ifq_serialize+0x173 sys/net/ifq.c:113 taskq_thread(ffff80000002c000) at taskq_thread+0xec sys/kern/kern_task.c:437 end trace frame: 0x0, count: -11 ddb{0}> machine ddbcpu 1 Stopped at pool_cache_get+0x1b1: movq 0x10(%r14),%r13 ddb{1}> trace pool_cache_get(ffffffff828dabc8) at pool_cache_get+0x1b1 pool_cache_item_magic_check sys/kern/subr_pool.c:1770 [inline] pool_cache_get(ffffffff828dabc8) at pool_cache_get+0x1b1 sys/kern/subr_pool.c:1884 pool_get(ffffffff828dabc8,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_copym(fffffd8064c05a00,580,580,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] m_copym(fffffd8064c05a00,580,580,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667 tcp_output(ffff800000ad8320) at tcp_output+0x15ba sys/netinet/tcp_output.c:673 tcp_usrreq(fffffd806eae67d8,9,fffffd8064c05a00,0,0,ffff800020e4d4f0) at tcp_usrreq+0xa55 sosend(fffffd806eae67d8,0,ffff800020e23e68,0,0,80) at sosend+0x671 sys/kern/uipc_socket.c:555 dofilewritev(ffff800020e4d4f0,4,ffff800020e23e68,0,ffff800020e23f50) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_write(ffff800020e4d4f0,ffff800020e23f00,ffff800020e23f50) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800020e23fd0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e23fd0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff4110, count: -10