kernel: protection fault trap, code=0 Stopped at pool_do_put+0x115: movq 0x8(%rbx),%rbx ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic the kernel did not panic ddb> trace pool_do_put(ffffffff829db330,fffffd80634e3400) at pool_do_put+0x115 pool_put(ffffffff829db330,fffffd80634e3400) at pool_put+0x71 sys/kern/subr_pool.c:801 art_table_gc(0) at art_table_gc+0xc5 sys/net/art.c:813 taskq_thread(ffffffff828fc520) at taskq_thread+0x9b sys/kern/kern_task.c:449 end trace frame: 0x0, count: -4 ddb> show registers rdi 0 rsi 0xfffffd80634e3800 rbp 0xffff8000215908c0 rbx 0x6d2853a5a5b8da24 rdx 0 rcx 0x1000 __ALIGN_SIZE rax 0xffff8000ffffe7e0 r8 0 r9 0 r10 0x86b1ff7bce9cd0b0 r11 0x2f26710a9267b2f5 r12 0xfffffd80634e3400 r13 0x6d2853a5a5b8da24 r14 0xffffffff829db330 at_heap_4_pool r15 0xfffffd806a9c4108 rip 0xffffffff81d16535 pool_do_put+0x115 cs 0x8 rflags 0x10292 __ALIGN_SIZE+0xf292 rsp 0xffff800021590810 ss 0x10 pool_do_put+0x115: movq 0x8(%rbx),%rbx ddb> show proc PROC (systqmp) pid=47689 stat=onproc flags process=14000 proc=200 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffffefc0,0xffff8000ffffe550 process=0xffff8000ffffc3e8 user=0xffff80002158b000, vmspace=0xffffffff82a0c058 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 21558 321084 11705 0 2 0 syz-executor.3 21558 313298 11705 0 3 0x4000080 fsleep syz-executor.3 28807 347060 24730 0 2 0 syz-executor.2 28807 426435 24730 0 3 0x4000080 fsleep syz-executor.2 76256 391370 55273 0 2 0 syz-executor.7 76256 95297 55273 0 3 0x4000080 fsleep syz-executor.7 57536 271471 85798 0 2 0 syz-executor.4 57536 507700 85798 0 2 0x4000000 syz-executor.4 57536 326117 85798 0 3 0x4000080 fsleep syz-executor.4 52243 343650 6652 0 3 0x80 nanoslp syz-executor.1 52243 231550 6652 0 3 0x4000080 lockf syz-executor.1 62736 253389 1 0 3 0x100083 ttyin getty 85798 298394 45539 0 3 0x82 nanoslp syz-executor.4 24730 253789 45539 0 3 0x82 nanoslp syz-executor.2 6652 347860 45539 0 3 0x82 nanoslp syz-executor.1 85021 408885 45539 0 3 0x82 piperd syz-executor.5 17061 390857 0 0 3 0x14280 nfsidl nfsio 86169 430805 0 0 3 0x14280 nfsidl nfsio 66785 496587 0 0 3 0x14280 nfsidl nfsio 38148 310983 0 0 3 0x14280 nfsidl nfsio 4478 234870 0 0 3 0x14280 nfsidl nfsio 54390 447731 0 0 3 0x14280 nfsidl nfsio 61982 409580 0 0 3 0x14200 bored sosplice 8566 235590 45539 0 3 0x82 piperd syz-executor.6 55273 420034 45539 0 3 0x82 nanoslp syz-executor.7 11705 325574 45539 0 3 0x82 nanoslp syz-executor.3 90381 284474 45539 0 3 0x82 nanoslp syz-executor.0 45539 184201 20823 0 3 0x82 thrsleep syz-fuzzer 45539 348822 20823 0 3 0x4000082 nanoslp syz-fuzzer 45539 338335 20823 0 3 0x4000082 thrsleep syz-fuzzer 45539 325778 20823 0 3 0x4000082 thrsleep syz-fuzzer 45539 334666 20823 0 3 0x4000082 kqread syz-fuzzer 45539 402334 20823 0 3 0x4000082 thrsleep syz-fuzzer 45539 51974 20823 0 3 0x4000082 thrsleep syz-fuzzer 45539 355340 20823 0 3 0x4000082 thrsleep syz-fuzzer 20823 357685 11494 0 3 0x10008a sigsusp ksh 11494 279459 89839 0 3 0x9a kqread sshd 89839 23343 1 0 3 0x88 kqread sshd 74060 75990 40907 73 3 0x1100090 kqread syslogd 40907 365931 1 0 3 0x100082 netio syslogd 29665 227639 1 0 3 0x100080 kqread resolvd 7787 157590 20924 77 3 0x100092 kqread dhcpleased 37266 412604 20924 77 3 0x100092 kqread dhcpleased 20924 79786 1 0 3 0x80 kqread dhcpleased 42475 393312 0 0 3 0x14200 bored smr 57140 441216 0 0 2 0x14200 zerothread 83961 306502 0 0 3 0x14200 aiodoned aiodoned 30968 324937 0 0 3 0x14200 syncer update 45333 275647 0 0 3 0x14200 cleaner cleaner 78384 522234 0 0 3 0x14200 reaper reaper 15969 410571 0 0 3 0x14200 pgdaemon pagedaemon 37112 99828 0 0 3 0x14200 bored viomb 32818 144329 0 0 3 0x40014200 acpi0 acpi0 39234 112215 0 0 3 0x14200 bored softnet * 2107 47689 0 0 7 0x14200 systqmp 84966 410232 0 0 3 0x14200 bored systq 8827 219327 0 0 3 0x40014200 bored softclock 53984 337936 0 0 3 0x40014200 idle0 1 451972 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10189 6486K 7278K 78643K 21254 0 pcb 13 14K 16K 78643K 422 0 rtable 232 19K 20K 78643K 808 0 ifaddr 91 19K 20K 78643K 341 0 sysctl 3 1K 1K 78643K 3 0 counters 27 17K 17K 78643K 56 0 ioctlops 0 0K 4K 78643K 5604 0 iov 0 0K 24K 78643K 723 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1370 86K 86K 78643K 4444 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 42 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 526 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 15 53K 85K 78643K 15416 0 sigio 1 0K 0K 78643K 79 0 proc 60 55K 79K 78643K 807 0 subproc 104 6K 6K 78643K 182 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 163 0 in_multi 88 5K 6K 78643K 332 0 ether_multi 1 0K 0K 78643K 53 0 mrt 0 0K 0K 78643K 21 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 163 731K 731K 78643K 163 0 exec 0 0K 2K 78643K 1224 0 tdb 3 0K 0K 78643K 3 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 282 197K 261K 78643K 77590 0 UVM aobj 80 3K 3K 78643K 93 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 164 0 NDP 12 0K 2K 78643K 72 0 temp 133 4728K 4984K 78643K 76072 0 kqueue 15 24K 28K 78643K 1332 0 SYN cache 2 16K 16K 78643K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 235 0 230 4 3 1 3 0 8 0 rtentry 112 221 0 128 4 0 4 4 0 8 0 unpcb 136 11100 0 11084 62 57 5 8 0 8 4 syncache 296 21 0 21 4 4 0 1 0 8 0 tcpqe 32 26 0 26 3 3 0 1 0 8 0 tcpcb 736 1027 0 1023 31 30 1 19 0 8 0 arp 88 32 0 16 1 0 1 1 0 8 0 ipq 40 2 0 2 2 2 0 1 0 8 0 ipqe 40 40 0 40 2 2 0 1 0 8 0 inpcb 312 5107 0 5097 48 44 4 11 0 8 3 rttmr 72 3 0 3 1 1 0 1 0 8 0 ip6q 72 2 0 2 1 1 0 1 0 8 0 ip6af 40 4 0 4 1 1 0 1 0 8 0 nd6 48 53 0 30 1 0 1 1 0 8 0 pkpcb 40 10 0 10 3 3 0 1 0 8 0 kcovpl 48 14 0 6 1 0 1 1 0 8 0 ppxss 1152 8 0 8 3 3 0 1 0 8 0 pfstscr 40 77 0 74 1 0 1 1 0 8 0 pfrktable 1344 33 0 24 1 0 1 1 0 8 0 pftag 88 3 0 0 1 0 1 1 0 8 0 pfstitem 24 4 0 0 1 0 1 1 0 8 0 pfstkey 112 148 0 144 1 0 1 1 0 8 0 pfstate 320 74 0 72 1 0 1 1 0 8 0 pfrule 1360 116 0 81 4 1 3 4 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1039 0 626 36 9 27 29 0 8 0 art_heap4: pool(0xffffffff829db330:art_heap4): free list modified: page 0xfffffd80634e3000; item ordinal 0; addr 0xfffffd80634e3800 (p 0xfffffd806a9c4000); offset 0x0=0x0 pool(art_heap4): free list modified: page 0xfffffd80634e3000; item ordinal 0; addr 0xfffffd80634e3800 (p 0xfffffd806a9c4000); offset 0x0=0x0 art_heap4: pool(0xffffffff829db330:art_heap4): page inconsistency: page 0xfffffd80634e3000; item ordinal 1; addr 0x6d2853a5a5b8da24 art_table 32 1040 0 626 4 0 4 4 0 8 0 art_node 16 220 0 138 1 0 1 1 0 8 0 sysvmsgpl 40 30 0 14 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 524 0 514 1 0 1 1 0 8 0 shmpl 112 90 0 13 3 0 3 3 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 19569 0 18133 91 0 91 91 0 8 0 ffsino 240 19569 0 18133 85 0 85 85 0 8 0 nchpl 144 39292 0 37657 63 0 63 63 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 110883 0 110883 5 4 1 2 0 8 1 vcpupl 1984 10 0 4 2 1 1 2 0 8 0 vmpool 528 13 0 7 1 0 1 1 0 8 0 pfiaddrpl 120 20 0 6 1 0 1 1 0 8 0 scsiplug 72 3 0 3 1 1 0 1 0 8 0 scxspl 216 111591 0 111591 16 15 1 8 0 8 1 plimitpl 152 668 0 654 1 0 1 1 0 8 0 sigapl 424 15703 0 15656 9 3 6 8 0 8 0 futexpl 64 103765 0 103761 3 2 1 1 0 8 0 knotepl 120 551086 0 550739 76 65 11 15 0 8 0 kqueuepl 184 8127 0 8113 57 53 4 10 0 8 3 pipepl 304 1505 0 1477 30 27 3 10 0 8 0 fdescpl 432 15668 0 15642 4 0 4 4 0 8 0 filepl 120 75819 0 75567 88 76 12 17 0 8 3 lockfpl 104 7079 0 7074 17 15 2 3 0 8 1 lockfspl 48 1934 0 1930 1 0 1 1 0 8 0 sessionpl 144 30 0 14 1 0 1 1 0 8 0 pgrppl 48 36 0 20 1 0 1 1 0 8 0 ucredpl 96 2587 0 2577 1 0 1 1 0 8 0 zombiepl 144 15657 0 15656 2 1 1 1 0 8 0 processpl 1000 15703 0 15656 8 0 8 8 0 8 0 procpl 672 34745 0 34685 12 5 7 8 0 8 0 sosppl 168 23 0 23 3 3 0 1 0 8 0 sockpl 448 16459 0 16428 248 236 12 25 0 8 8 mcl64k 65536 380 0 380 19 18 1 1 0 8 1 mcl16k 16384 990 0 990 14 13 1 1 0 8 1 mcl12k 12288 157 0 157 21 20 1 1 0 8 1 mcl9k 9216 253 0 253 20 19 1 1 0 8 1 mcl8k 8192 425 0 425 19 18 1 1 0 8 1 mcl4k 4096 826 0 826 15 14 1 1 0 8 1 mcl2k2 2112 62 0 62 19 19 0 1 0 8 0 mcl2k 2048 94453 0 94396 45 36 9 16 0 8 0 mtagpl 96 1710 0 1291 15 3 12 12 0 8 0 mbufpl 256 242734 0 242083 68 23 45 49 0 8 0 bufpl 288 23264 0 16863 458 0 458 458 0 8 0 anonpl 24 2624948 0 2606127 248 132 116 159 0 188 0 amapchunkpl 152 237639 0 236991 105 75 30 50 0 158 3 amappl16 200 36184 0 35531 98 63 35 56 0 8 0 amappl15 192 1025 0 1022 1 0 1 1 0 8 0 amappl14 184 863 0 858 1 0 1 1 0 8 0 amappl13 176 2158 0 2153 1 0 1 1 0 8 0 amappl12 168 5587 0 5576 1 0 1 1 0 8 0 amappl11 160 3600 0 3582 1 0 1 1 0 8 0 amappl10 152 90 0 85 1 0 1 1 0 8 0 amappl9 144 1505 0 1501 1 0 1 1 0 8 0 amappl8 136 2964 0 2879 4 0 4 4 0 8 1 amappl7 128 2301 0 2291 1 0 1 1 0 8 0 amappl6 120 1218 0 1197 2 1 1 2 0 8 0 amappl5 112 5821 0 5811 1 0 1 1 0 8 0 amappl4 104 9655 0 9623 2 1 1 2 0 8 0 amappl3 96 49692 0 49642 2 0 2 2 0 8 0 amappl2 88 21559 0 21490 3 1 2 3 0 8 0 amappl1 80 353222 0 352612 23 9 14 19 0 8 0 amappl 88 76911 0 76754 5 1 4 5 0 92 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 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 72 92 0 13 2 0 2 2 0 8 0 uaddrrnd 24 15681 0 15649 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 15681 0 15649 1 0 1 1 0 8 0 vmmpekpl 168 91521 0 91473 3 0 3 3 0 8 0 vmmpepl 168 1451020 0 1448460 201 77 124 139 0 357 4 vmsppl 272 15680 0 15649 4 1 3 3 0 8 0 rwobjpl 24 325982 0 318328 50 3 47 48 0 8 0 pdppl 4096 31368 0 31304 425 357 68 74 0 8 4 pvpl 32 5354980 0 5332248 437 249 188 301 0 265 0 pmappl 216 15680 0 15649 3 0 3 3 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 1622 0 806 24 0 24 24 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace pool_do_put(ffffffff829db330,fffffd80634e3400) at pool_do_put+0x115 pool_put(ffffffff829db330,fffffd80634e3400) at pool_put+0x71 sys/kern/subr_pool.c:801 art_table_gc(0) at art_table_gc+0xc5 sys/net/art.c:813 taskq_thread(ffffffff828fc520) at taskq_thread+0x9b sys/kern/kern_task.c:449 end trace frame: 0x0, count: -4 ddb> machine ddbcpu 1 No such command ddb> trace pool_do_put(ffffffff829db330,fffffd80634e3400) at pool_do_put+0x115 pool_put(ffffffff829db330,fffffd80634e3400) at pool_put+0x71 sys/kern/subr_pool.c:801 art_table_gc(0) at art_table_gc+0xc5 sys/net/art.c:813 taskq_thread(ffffffff828fc520) at taskq_thread+0x9b sys/kern/kern_task.c:449 end trace frame: 0x0, count: -4