kernel: protection fault trap, code=0 Stopped at pool_do_put+0x12e: 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(ffffffff82810bc8,fffffd805c85be00) at pool_do_put+0x12e sys/kern/subr_pool.c:836 pool_put(ffffffff82810bc8,fffffd805c85be00) at pool_put+0x4b sys/kern/subr_pool.c:794 art_table_gc(0) at art_table_gc+0xd5 sys/net/art.c:814 taskq_thread(ffffffff826d6fd0) at taskq_thread+0x92 sys/kern/kern_task.c:438 end trace frame: 0x0, count: -4 ddb> show registers rdi 0 rsi 0x9909f0893a6f5453 rbp 0xffff80001d6724c0 rbx 0x9909f0893a6f5453 rdx 0xffff80001d672410 rcx 0x1000 __ALIGN_SIZE rax 0x1 r8 0xffffffff81808a00 art_table_gc+0x90 r9 0x7 r10 0x1c6193fc54ceefb0 r11 0xfe8542df72bb88e3 r12 0xfffffd805c85be00 r13 0x9909f0893a6f5453 r14 0xffffffff82810bc8 at_heap_4_pool r15 0xfffffd806c3c4d90 rip 0xffffffff81b1405e pool_do_put+0x12e cs 0x8 rflags 0x10212 __ALIGN_SIZE+0xf212 rsp 0xffff80001d672410 ss 0x10 pool_do_put+0x12e: movq 0x8(%rbx),%rbx ddb> show proc PROC (systqmp) pid=176786 stat=onproc flags process=14000 proc=200 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d651c30,0xffff80001d651010 process=0xffff8000ffffe000 user=0xffff80001d66d000, vmspace=0xffffffff8285a3a0 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 66727 166537 30686 0 3 0x82 thrsleep syz-execprog 66727 108405 30686 0 3 0x4000082 thrsleep syz-execprog 66727 187918 30686 0 3 0x4000082 thrsleep syz-execprog 66727 186727 30686 0 3 0x4000082 wait syz-execprog 66727 25966 30686 0 3 0x4000082 thrsleep syz-execprog 66727 436761 30686 0 3 0x4000082 kqread syz-execprog 30686 174963 75648 0 3 0x10008a pause ksh 75648 7865 10473 0 3 0x92 select sshd 11110 181643 1 0 3 0x100083 ttyin getty 10473 514279 1 0 3 0x80 select sshd 99207 222260 51625 73 3 0x100090 kqread syslogd 51625 410719 1 0 3 0x100082 netio syslogd 47195 15742 1 77 2 0x100010 dhclient 20032 205492 1 0 3 0x80 poll dhclient 61015 376926 0 0 3 0x14200 bored smr 91063 237931 0 0 3 0x14200 pgzero zerothread 12366 493336 0 0 3 0x14200 aiodoned aiodoned 30517 487315 0 0 3 0x14200 syncer update 86454 182790 0 0 3 0x14200 cleaner cleaner 73951 169058 0 0 3 0x14200 reaper reaper 2169 467608 0 0 3 0x14200 pgdaemon pagedaemon 69217 64674 0 0 3 0x14200 bored crynlk 72783 461426 0 0 3 0x14200 bored crypto 96956 156958 0 0 3 0x40014200 acpi0 acpi0 88775 483758 0 0 2 0x14200 softnet *98218 176786 0 0 7 0x14200 systqmp 66977 328728 0 0 3 0x14200 bored systq 37872 446142 0 0 3 0x40014200 bored softclock 11666 412483 0 0 3 0x40014200 idle0 1 70901 0 0 3 0x82 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 9440 6320K 6320K 78643K 10540 0 pcb 13 8K 8K 78643K 13 0 rtable 61 1K 2K 78643K 157 0 ifaddr 24 7K 9K 78643K 33 0 counters 19 16K 16K 78643K 20 0 ioctlops 0 0K 2K 78643K 14 0 mount 1 1K 1K 78643K 1 0 vnodes 1182 74K 74K 78643K 1187 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 1K 78643K 2 0 VM map 2 0K 0K 78643K 2 0 sem 2 0K 0K 78643K 2 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 2 4K 12K 78643K 18 0 proc 47 38K 54K 78643K 318 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 11 0K 1K 78643K 22 0 ether_multi 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 19 95K 95K 78643K 19 0 exec 0 0K 1K 78643K 171 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 72 11K 12K 78643K 842 0 UVM aobj 3 2K 2K 78643K 3 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 3 0K 0K 78643K 6 0 temp 18 3845K 3909K 78643K 1628 0 kqueue 3 4K 4K 78643K 3 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 arp 64 4 0 2 1 0 1 1 0 8 0 rtpcb 80 17 0 15 1 0 1 1 0 8 0 rtentry 112 34 0 12 1 0 1 1 0 8 0 unpcb 120 27 0 19 1 0 1 1 0 8 0 syncache 264 5 0 5 1 0 1 1 0 8 1 tcpcb 544 8 0 5 1 0 1 1 0 8 0 inpcb 296 27 0 21 1 0 1 1 0 8 0 nd6 48 3 0 3 1 0 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 145 0 24 10 0 10 10 0 8 0 art_heap4: pool(0xffffffff82810bc8:art_heap4): free list modified: page 0xfffffd805c85b000; item ordinal 7; addr 0xfffffd805c85b000 (p 0xfffffd806c3c4000); offset 0x0=0x0 pool(art_heap4): free list modified: page 0xfffffd805c85b000; item ordinal 7; addr 0xfffffd805c85b000 (p 0xfffffd806c3c4000); offset 0x0=0x0 art_heap4: pool(0xffffffff82810bc8:art_heap4): page inconsistency: page 0xfffffd805c85b000; item ordinal 8; addr 0x9909f0893a6f5453 art_table 32 146 0 24 2 0 2 2 0 8 0 art_node 16 33 0 13 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1415 0 21 88 0 88 88 0 8 0 ffsino 240 1415 0 21 82 0 82 82 0 8 0 nchpl 144 1634 0 36 60 0 60 60 0 8 0 uvmvnodes 72 1424 0 0 26 0 26 26 0 8 0 vnodes 208 1424 0 0 75 0 75 75 0 8 0 namei 1024 3940 0 3940 1 0 1 1 0 8 1 scxspl 192 4233 0 4233 1 0 1 1 0 8 1 plimitpl 152 14 0 8 1 0 1 1 0 8 0 sigapl 424 212 0 186 4 0 4 4 0 8 0 knotepl 112 48 0 38 1 0 1 1 0 8 0 kqueuepl 144 2 0 0 1 0 1 1 0 8 0 pipepl 272 71 0 64 1 0 1 1 0 8 0 fdescpl 432 198 0 186 2 0 2 2 0 8 0 filepl 120 982 0 929 2 0 2 2 0 8 0 lockfpl 104 5 0 4 1 0 1 1 0 8 0 lockfspl 48 3 0 2 1 0 1 1 0 8 0 sessionpl 112 18 0 9 1 0 1 1 0 8 0 pgrppl 48 18 0 9 1 0 1 1 0 8 0 ucredpl 96 57 0 50 1 0 1 1 0 8 0 zombiepl 144 187 0 186 1 0 1 1 0 8 0 processpl 928 212 0 186 4 0 4 4 0 8 0 procpl 624 217 0 186 3 0 3 3 0 8 0 sockpl 400 71 0 55 2 0 2 2 0 8 0 mcl4k 4096 10 0 10 1 0 1 1 0 8 1 mcl2k 2048 4954 0 4918 8 3 5 8 0 8 0 mtagpl 96 2 0 2 1 1 0 1 0 8 0 mbufpl 256 8750 0 8709 8 1 7 7 0 8 2 bufpl 280 2911 0 126 199 0 199 199 0 8 0 anonpl 16 20116 0 18578 14 2 12 12 0 107 3 amapchunkpl 152 829 0 765 4 0 4 4 0 158 0 amappl16 192 125 0 98 2 0 2 2 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 31 0 24 1 0 1 1 0 8 0 amappl13 168 21 0 18 1 0 1 1 0 8 0 amappl12 160 3 0 3 1 1 0 1 0 8 0 amappl11 152 42 0 33 1 0 1 1 0 8 0 amappl10 144 10 0 8 1 0 1 1 0 8 0 amappl9 136 174 0 173 1 0 1 1 0 8 0 amappl8 128 242 0 228 1 0 1 1 0 8 0 amappl7 120 103 0 91 1 0 1 1 0 8 0 amappl6 112 24 0 21 2 1 1 1 0 8 0 amappl5 104 176 0 167 1 0 1 1 0 8 0 amappl4 96 429 0 405 1 0 1 1 0 8 0 amappl3 88 106 0 100 1 0 1 1 0 8 0 amappl2 80 797 0 744 2 0 2 2 0 8 0 amappl1 72 13568 0 13173 24 7 17 17 0 8 8 amappl 80 420 0 394 1 0 1 1 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 198 0 186 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 198 0 186 1 0 1 1 0 8 0 vmmpekpl 168 6062 0 6040 2 0 2 2 0 8 0 vmmpepl 168 29477 0 28627 80 10 70 70 0 357 31 vmsppl 272 197 0 186 1 0 1 1 0 8 0 pdppl 4096 402 0 372 5 0 5 5 0 8 0 pvpl 32 104501 0 100822 102 0 102 102 0 265 69 pmappl 200 197 0 186 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 217 0 6 7 0 7 7 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace pool_do_put(ffffffff82810bc8,fffffd805c85be00) at pool_do_put+0x12e sys/kern/subr_pool.c:836 pool_put(ffffffff82810bc8,fffffd805c85be00) at pool_put+0x4b sys/kern/subr_pool.c:794 art_table_gc(0) at art_table_gc+0xd5 sys/net/art.c:814 taskq_thread(ffffffff826d6fd0) at taskq_thread+0x92 sys/kern/kern_task.c:438 end trace frame: 0x0, count: -4 ddb> machine ddbcpu 1 No such command ddb> trace pool_do_put(ffffffff82810bc8,fffffd805c85be00) at pool_do_put+0x12e sys/kern/subr_pool.c:836 pool_put(ffffffff82810bc8,fffffd805c85be00) at pool_put+0x4b sys/kern/subr_pool.c:794 art_table_gc(0) at art_table_gc+0xd5 sys/net/art.c:814 taskq_thread(ffffffff826d6fd0) at taskq_thread+0x92 sys/kern/kern_task.c:438 end trace frame: 0x0, count: -4 ddb>