load: 1.15 not a € ý€ ýuvm_fault(0xffffffff82805ac0, 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(0xffffffff82805ac0, 0xfffffd0000000010, 0, 1) -> e pool_cache_get(ffffffff82909780) at pool_cache_get+0x1b1 pool_cache_item_magic_check sys/kern/subr_pool.c:1770 [inline] pool_cache_get(ffffffff82909780) at pool_cache_get+0x1b1 sys/kern/subr_pool.c:1884 end trace frame: 0xffff800020e62a10, count: 0 ddb{1}> trace pool_cache_get(ffffffff82909780) at pool_cache_get+0x1b1 pool_cache_item_magic_check sys/kern/subr_pool.c:1770 [inline] pool_cache_get(ffffffff82909780) at pool_cache_get+0x1b1 sys/kern/subr_pool.c:1884 pool_get(ffffffff82909780,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_copym(fffffd806d3ca700,ccc,304,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] m_copym(fffffd806d3ca700,ccc,304,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667 tcp_output(ffff800000ada320) at tcp_output+0x15ba sys/netinet/tcp_output.c:673 tcp_usrreq(fffffd806eae3968,9,fffffd806449ce00,0,0,ffff800020e41ae0) at tcp_usrreq+0xa55 sosend(fffffd806eae3968,0,ffff800020e62ea8,0,0,80) at sosend+0x671 sys/kern/uipc_socket.c:555 dofilewritev(ffff800020e41ae0,4,ffff800020e62ea8,0,ffff800020e62f90) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_write(ffff800020e41ae0,ffff800020e62f40,ffff800020e62f90) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800020e63010) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e63010) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc0240, count: -10 ddb{1}> show registers rdi 0 rsi 0x7 rbp 0xffff800020e62950 rbx 0xaf94ba30f1418851 rdx 0x304 rcx 0 rax 0 r8 0xffffffff81d5c56a tcp_output+0xbea r9 0x5 r10 0x3 r11 0xf50790e3b59872bd r12 0xffffffff82909780 mbpool r13 0 r14 0xfffffd0000000000 r15 0xfffffd807f008e80 rip 0xffffffff81b3edf1 pool_cache_get+0x1b1 cs 0x8 rflags 0x10282 __ALIGN_SIZE+0xf282 rsp 0xffff800020e628f0 ss 0x10 pool_cache_get+0x1b1: movq 0x10(%r14),%r13 ddb{1}> show proc PROC (sshd) pid=14955 stat=onproc flags process=12 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020e41120,0xffff800020e40290 process=0xffff800020e383f0 user=0xffff800020e5e000, vmspace=0xfffffd806e8f65c8 estcpu=0, cpticks=1, pctcpu=0.1 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 52013 294805 1 0 3 0x82 nanosleep getty 68869 461560 0 0 3 0x14200 bored sosplice 16058 250445 72881 0 3 0x2 biowait syz-executor.1 45721 439684 72881 0 7 0x2 syz-executor.0 72881 113890 53397 0 3 0x82 thrsleep syz-fuzzer 72881 223621 53397 0 3 0x4000082 nanosleep syz-fuzzer 72881 88576 53397 0 3 0x4000082 thrsleep syz-fuzzer 72881 29167 53397 0 3 0x4000082 thrsleep syz-fuzzer 72881 179517 53397 0 3 0x4000082 kqread syz-fuzzer 72881 27828 53397 0 3 0x4000082 thrsleep syz-fuzzer 72881 252244 53397 0 3 0x4000082 thrsleep syz-fuzzer 72881 485853 53397 0 3 0x4000082 thrsleep syz-fuzzer 72881 131472 53397 0 3 0x4000082 thrsleep syz-fuzzer 72881 260146 53397 0 3 0x4000082 thrsleep syz-fuzzer 72881 150331 53397 0 3 0x4000082 thrsleep syz-fuzzer 53397 72428 50079 0 3 0x10008a pause ksh *50079 14955 44379 0 7 0x12 sshd 44379 177502 1 0 3 0x80 select sshd 38809 116397 47540 74 3 0x100092 bpf pflogd 47540 108852 1 0 3 0x80 netio pflogd 99129 91524 13952 73 3 0x100090 kqread syslogd 13952 247248 1 0 3 0x100082 netio syslogd 17670 345235 1 77 3 0x100090 poll dhclient 52624 243342 1 0 3 0x80 poll dhclient 60921 243805 0 0 3 0x14200 bored smr 13279 206776 0 0 3 0x14200 pgzero zerothread 46991 290258 0 0 3 0x14200 aiodoned aiodoned 61172 433619 0 0 3 0x14200 syncer update 92434 207421 0 0 3 0x14200 cleaner cleaner 40645 494676 0 0 3 0x14200 reaper reaper 66982 61557 0 0 3 0x14200 pgdaemon pagedaemon 87423 445718 0 0 3 0x14200 bored crynlk 24325 367372 0 0 3 0x14200 bored crypto 21649 482267 0 0 3 0x40014200 acpi0 acpi0 51568 99450 0 0 3 0x40014200 idle1 45898 234131 0 0 2 0x14200 softnet 56095 109932 0 0 3 0x14200 bored systqmp 77592 309951 0 0 3 0x14200 bored systq 76661 222638 0 0 3 0x40014200 bored softclock 30765 65431 0 0 3 0x40014200 idle0 1 470325 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 16058 (syz-executor.1) thread 0xffff800020e08eb8 (250445) exclusive rrwlock inode r = 0 (0xfffffd806f06a5f8) #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 (0xfffffd806e8c26f8) #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 45721 (syz-executor.0) thread 0xffff800020dddad8 (439684) exclusive rrwlock inode r = 0 (0xfffffd806f06a1b8) #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 (0xfffffd806863e920) #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 50079 (sshd) thread 0xffff800020e41ae0 (14955) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82902548) #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 (0xffffffff82753778) #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 9540 6425K 6812K 78643K 11740 0 pcb 13 8K 8K 78643K 137 0 rtable 148 11K 11K 78643K 645 0 ifaddr 102 20K 20K 78643K 302 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 99 0 ioctlops 0 0K 4K 78643K 1577 0 iov 0 0K 32K 78643K 98 0 mount 1 1K 1K 78643K 1 0 vnodes 1211 76K 77K 78643K 1603 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 10 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 152 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 4 9K 25K 78643K 795 0 sigio 0 0K 0K 78643K 16 0 proc 64 63K 95K 78643K 577 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 52 0 in_multi 80 3K 3K 78643K 274 0 ether_multi 1 0K 0K 78643K 21 0 mrt 0 0K 0K 78643K 8 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 275 0 pfkey data 0 0K 0K 78643K 2 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 136 84K 93K 78643K 3598 0 UVM aobj 27 2K 2K 78643K 29 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 122 0 NDP 15 0K 0K 78643K 74 0 temp 147 3871K 3937K 78643K 17360 0 kqueue 3 4K 8K 78643K 44 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 13 0 5 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 51 0 49 1 0 1 1 0 8 0 rtentry 112 107 0 58 2 0 2 2 0 8 0 unpcb 120 1717 0 1707 3 1 2 2 0 8 1 syncache 264 10 0 10 4 3 1 1 0 8 1 tcpqe 32 167 0 167 1 1 0 1 0 8 0 tcpcb 544 258 0 254 1 0 1 1 0 8 0 inpcb 296 848 0 841 4 2 2 2 0 8 1 rttmr 72 3 0 3 3 3 0 1 0 8 0 nd6 48 42 0 35 1 0 1 1 0 8 0 pkpcb 40 9 0 9 3 2 1 1 0 8 1 ppxss 1128 8 0 8 3 3 0 1 0 8 0 pffrag 232 4 0 2 1 0 1 1 0 482 0 pffrnode 88 4 0 2 1 0 1 1 0 8 0 pffrent 40 10 0 8 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 45 0 33 3 1 2 2 0 8 1 pftag 88 3 0 2 1 0 1 1 0 8 0 pfstitem 24 14 0 7 1 0 1 1 0 8 0 pfstkey 112 14 0 7 1 0 1 1 0 8 0 pfstate 328 14 0 7 2 1 1 2 0 8 0 pfrule 1360 45 0 26 4 2 2 2 0 8 0 art_heap8 4096 4 0 2 4 2 2 3 0 8 0 art_heap4 256 454 0 240 16 2 14 15 0 8 0 art_table 32 458 0 242 2 0 2 2 0 8 0 art_node 16 106 0 62 1 0 1 1 0 8 0 sysvmsgpl 40 38 0 22 1 0 1 1 0 8 0 semapl 112 150 0 140 1 0 1 1 0 8 0 shmpl 112 27 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2670 0 1269 89 0 89 89 0 8 0 ffsino 272 2670 0 1269 96 1 95 95 0 8 0 nchpl 144 4333 0 2746 60 0 60 60 0 8 0 uvmvnodes 72 2972 0 0 55 0 55 55 0 8 0 vnodes 208 2972 0 0 157 0 157 157 0 8 0 namei 1024 12230 0 12230 3 2 1 1 0 8 1 percpumem 16 60 0 28 1 0 1 1 0 8 0 vcpupl 1984 8 0 0 1 0 1 1 0 8 0 vmpool 560 10 0 2 2 1 1 1 0 8 0 pfiaddrpl 120 19 0 8 1 0 1 1 0 8 0 scsiplug 64 2 0 2 1 1 0 1 0 8 0 scxspl 192 12050 0 12048 10 9 1 7 0 8 0 plimitpl 152 93 0 85 1 0 1 1 0 8 0 sigapl 424 1012 0 981 4 0 4 4 0 8 0 futexpl 56 12823 0 12823 2 1 1 1 0 8 1 knotepl 112 128 0 109 1 0 1 1 0 8 0 kqueuepl 144 137 0 134 1 0 1 1 0 8 0 pipepl 304 222 0 212 3 2 1 2 0 8 0 fdescpl 496 996 0 981 3 0 3 3 0 8 0 filepl 152 7289 0 7190 10 4 6 7 0 8 1 lockfpl 104 133 0 132 1 0 1 1 0 8 0 lockfspl 48 52 0 51 1 0 1 1 0 8 0 sessionpl 112 22 0 12 1 0 1 1 0 8 0 pgrppl 48 28 0 18 1 0 1 1 0 8 0 ucredpl 96 591 0 582 1 0 1 1 0 8 0 zombiepl 144 981 0 981 2 1 1 1 0 8 1 processpl 984 1012 0 981 7 2 5 5 0 8 0 procpl 624 2707 0 2666 4 0 4 4 0 8 0 srpgc 64 2 0 2 1 1 0 1 0 8 0 sosppl 128 12 0 12 3 2 1 1 0 8 1 sockpl 400 2626 0 2607 8 3 5 6 0 8 3 mcl64k 65536 9 0 0 2 0 2 2 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 6 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 11 0 0 2 0 2 2 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 263 0 0 32 0 32 32 0 8 0 mtagpl 96 49 0 0 2 0 2 2 0 8 0 mbufpl 256 500 0 0 30 0 30 30 0 8 0 bufpl 280 6018 0 134 421 0 421 421 0 8 0 anonpl 16 106605 0 90173 92 8 84 84 0 124 13 amapchunkpl 152 6689 0 6541 31 20 11 20 0 158 4 amappl16 192 4192 0 3272 62 7 55 59 0 8 8 amappl15 184 268 0 266 1 0 1 1 0 8 0 amappl14 176 25 0 21 1 0 1 1 0 8 0 amappl13 168 514 0 510 1 0 1 1 0 8 0 amappl12 160 487 0 482 1 0 1 1 0 8 0 amappl11 152 57 0 42 1 0 1 1 0 8 0 amappl10 144 288 0 283 1 0 1 1 0 8 0 amappl9 136 390 0 389 1 0 1 1 0 8 0 amappl8 128 391 0 351 2 0 2 2 0 8 0 amappl7 120 128 0 116 1 0 1 1 0 8 0 amappl6 112 27 0 21 2 1 1 1 0 8 0 amappl5 104 786 0 767 1 0 1 1 0 8 0 amappl4 96 627 0 601 1 0 1 1 0 8 0 amappl3 88 235 0 229 1 0 1 1 0 8 0 amappl2 80 7593 0 7527 2 0 2 2 0 8 0 amappl1 72 30890 0 30461 23 13 10 18 0 8 0 amappl 80 2993 0 2948 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 28 0 2 1 0 1 1 0 8 0 uaddrrnd 24 1006 0 983 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1006 0 983 1 0 1 1 0 8 0 vmmpekpl 168 11489 0 11458 2 0 2 2 0 8 0 vmmpepl 168 127677 0 125686 152 44 108 127 0 357 11 vmsppl 368 1005 0 983 3 0 3 3 0 8 0 pdppl 4096 2019 0 1974 8 1 7 7 0 8 0 pvpl 32 324162 0 304638 216 17 199 199 0 265 33 pmappl 232 1005 0 983 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 309 0 15 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(ffffffff82798ff0) 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(d1523,d1524) at __sanitizer_cov_trace_cmp4+0x10 sys/dev/kcov.c:134 __mp_lock(ffffffff82902340) at __mp_lock+0x139 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82902340) at __mp_lock+0x139 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff82902340,1) 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(ffff800020edcb20,1) at sleep_finish+0x113 sys/kern/kern_synch.c:418 sleep_finish_all(ffff800020edcb20,1) at sleep_finish_all+0x32 sleep_finish_timeout sys/kern/kern_synch.c:447 [inline] sleep_finish_all(ffff800020edcb20,1) at sleep_finish_all+0x32 sys/kern/kern_synch.c:393 tsleep(fffffd806abc19f8,11,ffffffff82471e06,0) at tsleep+0x1cc sys/kern/kern_synch.c:155 biowait(fffffd806abc19f8) at biowait+0xa6 sys/kern/vfs_bio.c:1256 bwrite(fffffd806abc19f8) at bwrite+0x1e4 sys/kern/vfs_bio.c:765 ufs_dirremove(fffffd8068651680,fffffd806f06a120,800c,1) at ufs_dirremove+0x291 ufs_rmdir(ffff800020edcd48) at ufs_rmdir+0x247 sys/ufs/ufs/ufs_vnops.c:1328 VOP_RMDIR(fffffd8068651680,fffffd8064a04348,ffff800020edce48) at VOP_RMDIR+0xf8 sys/kern/vfs_vops.c:474 dounlinkat(ffff800020dddad8,ffffff9c,7f7fffff3270,8) at dounlinkat+0x14c sys/kern/vfs_syscalls.c:1886 syscall(ffff800020edcfc0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020edcfc0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff3260, count: -18 ddb{0}> machine ddbcpu 1 Stopped at pool_cache_get+0x1b1: movq 0x10(%r14),%r13 ddb{1}> trace pool_cache_get(ffffffff82909780) at pool_cache_get+0x1b1 pool_cache_item_magic_check sys/kern/subr_pool.c:1770 [inline] pool_cache_get(ffffffff82909780) at pool_cache_get+0x1b1 sys/kern/subr_pool.c:1884 pool_get(ffffffff82909780,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_copym(fffffd806d3ca700,ccc,304,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] m_copym(fffffd806d3ca700,ccc,304,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667 tcp_output(ffff800000ada320) at tcp_output+0x15ba sys/netinet/tcp_output.c:673 tcp_usrreq(fffffd806eae3968,9,fffffd806449ce00,0,0,ffff800020e41ae0) at tcp_usrreq+0xa55 sosend(fffffd806eae3968,0,ffff800020e62ea8,0,0,80) at sosend+0x671 sys/kern/uipc_socket.c:555 dofilewritev(ffff800020e41ae0,4,ffff800020e62ea8,0,ffff800020e62f90) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_write(ffff800020e41ae0,ffff800020e62f40,ffff800020e62f90) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800020e63010) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e63010) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc0240, count: -10