uvm_fault(0xffffffff827bc940, 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(0xffffffff827bc940, 0xfffffd0000000010, 0, 1) -> e pool_cache_get(ffffffff828b8b28) at pool_cache_get+0x1b1 pool_cache_item_magic_check sys/kern/subr_pool.c:1770 [inline] pool_cache_get(ffffffff828b8b28) at pool_cache_get+0x1b1 sys/kern/subr_pool.c:1884 end trace frame: 0xffff800020e624a0, count: 0 ddb{1}> trace pool_cache_get(ffffffff828b8b28) at pool_cache_get+0x1b1 pool_cache_item_magic_check sys/kern/subr_pool.c:1770 [inline] pool_cache_get(ffffffff828b8b28) at pool_cache_get+0x1b1 sys/kern/subr_pool.c:1884 pool_get(ffffffff828b8b28,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_copym(fffffd8064422b00,0,304,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] m_copym(fffffd8064422b00,0,304,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667 tcp_output(ffff800000ad9760) at tcp_output+0x15ba sys/netinet/tcp_output.c:673 tcp_usrreq(fffffd806eae3968,9,fffffd8064422b00,0,0,ffff800020e40d50) at tcp_usrreq+0xa55 sosend(fffffd806eae3968,0,ffff800020e62938,0,0,80) at sosend+0x671 sys/kern/uipc_socket.c:555 dofilewritev(ffff800020e40d50,4,ffff800020e62938,0,ffff800020e62a20) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_write(ffff800020e40d50,ffff800020e629d0,ffff800020e62a20) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800020e62aa0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e62aa0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe1fa0, count: -10 ddb{1}> show registers rdi 0 rsi 0x7 rbp 0xffff800020e623e0 rbx 0x61ca73fbeb35bb0 rdx 0x304 rcx 0 rax 0 r8 0xffffffff8213507a tcp_output+0xbea r9 0x5 r10 0x3 r11 0x10ace53b48f80373 r12 0xffffffff828b8b28 mbpool r13 0 r14 0xfffffd0000000000 r15 0xfffffd807f008e80 rip 0xffffffff81d55d71 pool_cache_get+0x1b1 cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff800020e62380 ss 0x10 pool_cache_get+0x1b1: movq 0x10(%r14),%r13 ddb{1}> show proc PROC (sshd) pid=154978 stat=onproc flags process=12 proc=0 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020e3f4f0,0xffff800020e3fc50 process=0xffff800020e6abc0 user=0xffff800020e5d000, vmspace=0xfffffd807efff730 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 57374 249677 0 0 3 0x14280 nfsidl nfsio 20714 346438 0 0 3 0x14280 nfsidl nfsio 25261 19831 0 0 3 0x14280 nfsidl nfsio 78424 306797 0 0 3 0x14280 nfsidl nfsio 75714 103113 0 0 3 0x14280 nfsidl nfsio 70519 250296 0 0 3 0x14280 nfsidl nfsio 86875 173560 0 0 3 0x14280 nfsidl nfsio 23616 385738 0 0 3 0x14280 nfsidl nfsio 4447 493653 0 0 3 0x14280 nfsidl nfsio 4236 128172 0 0 3 0x14280 nfsidl nfsio 79957 482450 0 0 3 0x14280 nfsidl nfsio 43546 391195 0 0 3 0x14280 nfsidl nfsio 21887 47967 0 0 3 0x14280 nfsidl nfsio 64545 29535 0 0 3 0x14280 nfsidl nfsio 74715 254624 0 0 3 0x14280 nfsidl nfsio 21740 217131 0 0 3 0x14280 nfsidl nfsio 86672 345239 0 0 3 0x14280 nfsidl nfsio 62121 482583 0 0 3 0x14280 nfsidl nfsio 30361 61340 0 0 3 0x14280 nfsidl nfsio 49430 472844 0 0 3 0x14280 nfsidl nfsio 36353 99339 74849 0 3 0x2 biowait syz-executor.0 56918 139673 0 0 3 0x14200 bored sosplice 35677 158436 74849 0 2 0x82 syz-executor.1 74849 142795 11902 0 3 0x82 kqread syz-fuzzer 74849 505021 11902 0 3 0x4000082 nanosleep syz-fuzzer 74849 47483 11902 0 3 0x4000082 thrsleep syz-fuzzer 74849 464249 11902 0 3 0x4000082 thrsleep syz-fuzzer 74849 101321 11902 0 3 0x4000082 thrsleep syz-fuzzer 74849 483382 11902 0 7 0x4000002 syz-fuzzer 74849 424114 11902 0 3 0x4000082 thrsleep syz-fuzzer 74849 387742 11902 0 3 0x4000082 nanosleep syz-fuzzer 74849 135682 11902 0 3 0x4000082 thrsleep syz-fuzzer 74849 326769 11902 0 3 0x4000082 thrsleep syz-fuzzer 11902 156536 15175 0 3 0x10008a pause ksh *15175 154978 75736 0 7 0x12 sshd 84678 395316 1 0 3 0x100083 ttyin getty 75736 153012 1 0 3 0x80 select sshd 85529 128357 14835 74 3 0x100092 bpf pflogd 14835 234495 1 0 3 0x80 netio pflogd 27637 107356 56186 73 3 0x100090 kqread syslogd 56186 492344 1 0 3 0x100082 netio syslogd 80173 244433 1 77 3 0x100090 poll dhclient 49411 226517 1 0 3 0x80 poll dhclient 64157 93952 0 0 3 0x14200 bored smr 97740 281292 0 0 3 0x14200 pgzero zerothread 8000 319884 0 0 3 0x14200 aiodoned aiodoned 12945 503434 0 0 3 0x14200 syncer update 3283 122513 0 0 3 0x14200 cleaner cleaner 43080 2866 0 0 3 0x14200 reaper reaper 31765 236812 0 0 3 0x14200 pgdaemon pagedaemon 9231 334684 0 0 3 0x14200 bored crynlk 59726 521394 0 0 3 0x14200 bored crypto 85386 248841 0 0 3 0x40014200 acpi0 acpi0 78917 55479 0 0 3 0x40014200 idle1 15733 200118 0 0 3 0x14200 bored softnet 3210 103107 0 0 3 0x14200 bored systqmp 59045 515439 0 0 3 0x14200 bored systq 52520 382567 0 0 3 0x40014200 bored softclock 34537 355216 0 0 3 0x40014200 idle0 1 447090 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 36353 (syz-executor.0) thread 0xffff800020e38608 (99339) exclusive rrwlock inode r = 0 (0xfffffd8064646f88) #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 (0xfffffd8064646818) #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 cache_lookup+0x2bb sys/kern/vfs_cache.c:224 #7 ufs_lookup+0x1bc sys/ufs/ufs/ufs_lookup.c:162 #8 VOP_LOOKUP+0x5b sys/kern/vfs_vops.c:90 #9 vfs_lookup+0x7a6 sys/kern/vfs_lookup.c:568 #10 namei+0x63c sys/kern/vfs_lookup.c:249 #11 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1853 #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 Process 74849 (syz-fuzzer) thread 0xffff800020ddd118 (483382) exclusive rwlock pipelk r = 0 (0xfffffd806f91f960) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 pipe_write+0x361 sys/kern/sys_pipe.c:559 #2 dofilewritev+0x1b6 sys/kern/sys_generic.c:365 #3 sys_write+0x83 sys/kern/sys_generic.c:285 #4 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #4 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #5 Xsyscall+0x128 Process 15175 (sshd) thread 0xffff800020e40d50 (154978) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82919f20) #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 (0xffffffff8275f668) #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 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9530 6435K 6953K 78643K 12962 0 pcb 13 8K 8K 78643K 416 0 rtable 111 15K 16K 78643K 1016 0 ifaddr 97 20K 21K 78643K 272 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 95 0 ioctlops 0 0K 4K 78643K 1640 0 iov 0 0K 16K 78643K 636 0 mount 1 1K 1K 78643K 1 0 vnodes 1223 77K 77K 78643K 1912 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 21 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 338 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 4 9K 25K 78643K 1754 0 sigio 0 0K 0K 78643K 4 0 proc 61 63K 83K 78643K 571 0 subproc 32 2K 2K 78643K 51 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 1028 0 in_multi 85 3K 4K 78643K 214 0 ether_multi 1 0K 0K 78643K 17 0 mrt 0 0K 0K 78643K 153 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 61 281K 281K 78643K 61 0 exec 0 0K 1K 78643K 305 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 147 137K 137K 78643K 6500 0 UVM aobj 57 6K 6K 78643K 63 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 115 0 NDP 13 0K 0K 78643K 58 0 temp 138 3870K 3935K 78643K 13564 0 kqueue 3 4K 12K 78643K 30 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 15 0 6 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 67 0 65 1 0 1 1 0 8 0 rtentry 112 205 0 170 2 0 2 2 0 8 0 unpcb 120 429 0 419 1 0 1 1 0 8 0 syncache 264 12 0 12 3 2 1 1 0 8 1 tcpqe 32 4 0 4 2 1 1 1 0 8 1 tcpcb 544 1191 0 1187 1 0 1 1 0 8 0 ipq 40 1 0 1 1 0 1 1 0 8 1 ipqe 40 2 0 2 1 0 1 1 0 8 1 inpcb 296 2179 0 2170 11 9 2 2 0 8 1 rttmr 72 46 0 46 3 3 0 1 0 8 0 nd6 48 27 0 22 1 0 1 1 0 8 0 pkpcb 40 3 0 3 2 2 0 1 0 8 0 swfcl 56 2 0 0 1 0 1 1 0 8 0 ppxss 1136 3 0 3 2 2 0 1 0 8 0 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pffrag 232 4 0 2 3 2 1 1 0 482 0 pffrnode 88 4 0 2 3 2 1 1 0 8 0 pffrent 40 11 0 9 3 2 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 42 0 35 2 1 1 2 0 8 0 pfstitem 24 15 0 13 1 0 1 1 0 8 0 pfstkey 112 19 0 17 1 0 1 1 0 8 0 pfstate 328 17 0 15 2 1 1 2 0 8 0 pfsrctr 152 30 0 30 2 2 0 1 0 8 0 pfrule 1360 37 0 23 3 1 2 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 564 0 391 17 6 11 14 0 8 0 art_table 32 566 0 391 2 0 2 2 0 8 0 art_node 16 201 0 172 1 0 1 1 0 8 0 sysvmsgpl 40 41 0 17 1 0 1 1 0 8 0 semapl 112 336 0 326 1 0 1 1 0 8 0 shmpl 112 60 0 6 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 3529 0 2122 90 1 89 89 0 8 0 ffsino 272 3529 0 2122 96 1 95 95 0 8 0 nchpl 144 6425 0 4838 60 0 60 60 0 8 0 uvmvnodes 72 4095 0 0 75 0 75 75 0 8 0 vnodes 208 4095 0 0 216 0 216 216 0 8 0 namei 1024 22447 0 22447 7 6 1 1 0 8 1 percpumem 16 58 0 26 1 0 1 1 0 8 0 vcpupl 1984 12 0 0 2 0 2 2 0 8 0 vmpool 560 12 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 14 0 9 1 0 1 1 0 8 0 scsiplug 64 2 0 2 1 1 0 1 0 8 0 scxspl 192 17980 0 17979 10 9 1 7 0 8 0 plimitpl 152 101 0 93 1 0 1 1 0 8 0 sigapl 424 1988 0 1937 6 0 6 6 0 8 0 futexpl 56 25356 0 25356 6 5 1 1 0 8 1 knotepl 112 107 0 88 1 0 1 1 0 8 0 kqueuepl 144 133 0 131 1 0 1 1 0 8 0 pipepl 304 263 0 253 7 5 2 2 0 8 1 fdescpl 496 1951 0 1936 3 0 3 3 0 8 0 filepl 152 14019 0 13918 10 5 5 6 0 8 1 lockfpl 104 277 0 276 1 0 1 1 0 8 0 lockfspl 48 96 0 95 1 0 1 1 0 8 0 sessionpl 112 19 0 8 1 0 1 1 0 8 0 pgrppl 48 29 0 18 1 0 1 1 0 8 0 ucredpl 96 4896 0 4887 1 0 1 1 0 8 0 zombiepl 144 1937 0 1937 2 1 1 1 0 8 1 processpl 992 1988 0 1937 7 0 7 7 0 8 0 procpl 624 5644 0 5584 6 0 6 6 0 8 1 sosppl 128 5 0 5 3 3 0 1 0 8 0 sockpl 400 2683 0 2664 15 12 3 6 0 8 1 mcl64k 65536 7 0 0 1 0 1 1 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 22 0 0 2 0 2 2 0 8 0 mcl9k 9216 5 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 13 0 0 2 0 2 2 0 8 0 mcl2k2 2112 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 236 0 0 27 2 25 27 0 8 0 mtagpl 96 196 0 0 5 0 5 5 0 8 0 mbufpl 256 697 0 0 35 0 35 35 0 8 0 bufpl 280 6024 0 139 421 0 421 421 0 8 0 anonpl 16 183818 0 166382 100 29 71 86 0 124 0 amapchunkpl 152 11235 0 11077 41 34 7 20 0 158 0 amappl16 192 7415 0 6478 74 26 48 59 0 8 0 amappl15 184 314 0 314 2 2 0 1 0 8 0 amappl14 176 866 0 860 1 0 1 1 0 8 0 amappl13 168 589 0 585 1 0 1 1 0 8 0 amappl12 160 563 0 560 2 1 1 1 0 8 0 amappl11 152 901 0 885 1 0 1 1 0 8 0 amappl10 144 23 0 18 1 0 1 1 0 8 0 amappl9 136 384 0 383 1 0 1 1 0 8 0 amappl8 128 403 0 366 2 0 2 2 0 8 0 amappl7 120 124 0 111 1 0 1 1 0 8 0 amappl6 112 30 0 23 1 0 1 1 0 8 0 amappl5 104 1014 0 998 1 0 1 1 0 8 0 amappl4 96 1355 0 1325 1 0 1 1 0 8 0 amappl3 88 1006 0 1000 1 0 1 1 0 8 0 amappl2 80 15436 0 15370 2 0 2 2 0 8 0 amappl1 72 68192 0 67759 22 11 11 18 0 8 0 amappl 80 5910 0 5856 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 62 0 6 1 0 1 1 0 8 0 uaddrrnd 24 1963 0 1936 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1963 0 1936 1 0 1 1 0 8 0 vmmpekpl 168 17015 0 16968 7 4 3 3 0 8 0 vmmpepl 168 259465 0 257418 173 71 102 129 0 357 2 vmsppl 368 1962 0 1936 3 0 3 3 0 8 0 pdppl 4096 3933 0 3884 8 1 7 7 0 8 0 pvpl 32 567538 0 547179 234 61 173 202 0 265 5 pmappl 232 1962 0 1936 4 2 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 320 0 32 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(ffffffff8270dff0) 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 __mp_lock(ffffffff82919d18) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82919d18) at __mp_lock+0x127 sys/kern/kern_lock.c:147 intr_handler(ffff800020eb5f50,ffff80000004a400) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge17_untramp() at Xintr_ioapic_edge17_untramp+0x19f __mp_lock(ffffffff82919d18) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82919d18) at __mp_lock+0x127 sys/kern/kern_lock.c:147 pipeselwakeup(fffffd806f91f8d0) at pipeselwakeup+0x4b sys/kern/sys_pipe.c:365 pipe_write(fffffd80665e6ab0,ffff800020eb61d8,0) at pipe_write+0x74e sys/kern/sys_pipe.c:658 dofilewritev(ffff800020ddd118,12,ffff800020eb61d8,0,ffff800020eb62c0) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_write(ffff800020ddd118,ffff800020eb6270,ffff800020eb62c0) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800020eb6340) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020eb6340) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc00387f8a8, count: -13 ddb{0}> machine ddbcpu 1 Stopped at pool_cache_get+0x1b1: movq 0x10(%r14),%r13 ddb{1}> trace pool_cache_get(ffffffff828b8b28) at pool_cache_get+0x1b1 pool_cache_item_magic_check sys/kern/subr_pool.c:1770 [inline] pool_cache_get(ffffffff828b8b28) at pool_cache_get+0x1b1 sys/kern/subr_pool.c:1884 pool_get(ffffffff828b8b28,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_copym(fffffd8064422b00,0,304,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] m_copym(fffffd8064422b00,0,304,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667 tcp_output(ffff800000ad9760) at tcp_output+0x15ba sys/netinet/tcp_output.c:673 tcp_usrreq(fffffd806eae3968,9,fffffd8064422b00,0,0,ffff800020e40d50) at tcp_usrreq+0xa55 sosend(fffffd806eae3968,0,ffff800020e62938,0,0,80) at sosend+0x671 sys/kern/uipc_socket.c:555 dofilewritev(ffff800020e40d50,4,ffff800020e62938,0,ffff800020e62a20) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_write(ffff800020e40d50,ffff800020e629d0,ffff800020e62a20) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800020e62aa0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e62aa0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe1fa0, count: -10