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(ffffffff8256d860,fffffd803e15e000) at pool_do_put+0x12e sys/kern/subr_pool.c:844 pool_put(ffffffff8256d860,fffffd803e15e000) at pool_put+0x4b sys/kern/subr_pool.c:802 m_free(fffffd803e15e000) at m_free+0x119 sys/kern/uipc_mbuf.c:459 rt_ifa_del(ffff8000006a2400,800100,ffff8000006a2440,0) at rt_ifa_del+0x436 sys/net/route.c:1201 in6_unlink_ifa(ffff8000006a2400,ffff800000a6a800) at in6_unlink_ifa+0x571 sys/netinet6/in6.c:943 in6_update_ifa(ffff800000a6a800,ffff80001491a200,0) at in6_update_ifa+0x13f7 sys/netinet6/in6.c:875 in6_ioctl_change_ifaddr(8080691a,ffff80001491a200,ffff800000a6a800) at in6_ioctl_change_ifaddr+0x40c sys/netinet6/in6.c:352 ifioctl(fffffd80363d0a88,8080691a,ffff80001491a200,ffff8000ffff8518) at ifioctl+0xe60 sys/net/if.c:2291 sys_ioctl(ffff8000ffff8518,ffff80001491a318,ffff80001491a360) at sys_ioctl+0x5b9 syscall(ffff80001491a3e0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbc030, count: -11 ddb> show registers rdi 0 rsi 0xf007159ad480d6d8 rbp 0xffff800014919c50 rbx 0xf007159ad480d6d8 rdx 0xffff800014919ba0 rcx 0x1000 __ALIGN_SIZE rax 0xfffffd803e15f000 r8 0x4 r9 0x5 r10 0x8781591ba353c3f3 r11 0xc4aeae6827fde8c5 r12 0xfffffd803e15e000 r13 0xf007159ad480d6d8 r14 0xffffffff8256d860 mbpool r15 0xfffffd803e8a2da8 rip 0xffffffff8168377e pool_do_put+0x12e cs 0x8 rflags 0x10216 __ALIGN_SIZE+0xf216 rsp 0xffff800014919ba0 ss 0x10 pool_do_put+0x12e: movq 0x8(%rbx),%rbx ddb> show proc PROC (syz-executor.0) pid=102996 stat=onproc flags process=0 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff8008,0xffffffff82593130 process=0xffff8000148a3180 user=0xffff800014915000, vmspace=0xfffffd803f011660 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND *35111 102996 46630 0 7 0 syz-executor.0 46630 33784 86781 0 3 0x82 nanosleep syz-executor.0 86781 46270 70093 0 3 0x82 thrsleep syz-execprog 86781 492899 70093 0 3 0x4000082 nanosleep syz-execprog 86781 47304 70093 0 3 0x4000082 thrsleep syz-execprog 86781 390180 70093 0 3 0x4000082 thrsleep syz-execprog 86781 323533 70093 0 3 0x4000082 kqread syz-execprog 86781 149188 70093 0 3 0x4000082 thrsleep syz-execprog 86781 42839 70093 0 3 0x4000082 thrsleep syz-execprog 70093 310456 90051 0 3 0x10008a pause ksh 90051 394760 83835 0 3 0x92 select sshd 29185 297716 1 0 3 0x100083 ttyin getty 83835 327145 1 0 3 0x80 select sshd 42601 128511 34525 73 3 0x100090 kqread syslogd 34525 128184 1 0 3 0x100082 netio syslogd 24522 299335 1 77 3 0x100090 poll dhclient 78122 227765 1 0 3 0x80 poll dhclient 77128 319778 0 0 2 0x14200 zerothread 25754 459072 0 0 3 0x14200 aiodoned aiodoned 3540 186180 0 0 3 0x14200 syncer update 59126 342965 0 0 3 0x14200 cleaner cleaner 51018 232255 0 0 3 0x14200 reaper reaper 10157 49151 0 0 3 0x14200 pgdaemon pagedaemon 96946 284615 0 0 3 0x14200 bored crynlk 88526 92807 0 0 3 0x14200 bored crypto 26351 279724 0 0 3 0x40014200 acpi0 acpi0 70335 461634 0 0 3 0x14200 bored softnet 66474 271977 0 0 3 0x14200 bored systqmp 98890 434970 0 0 3 0x14200 bored systq 6578 404000 0 0 3 0x40014200 bored softclock 16347 295893 0 0 3 0x40014200 idle0 98514 9719 0 0 3 0x14200 bored smr 1 343940 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 9442 6320K 6320K 78643K 10539 0 pcb 13 8K 8K 78643K 13 0 rtable 83 2K 2K 78643K 153 0 ifaddr 33 9K 9K 78643K 33 0 counters 19 16K 16K 78643K 19 0 ioctlops 0 0K 2K 78643K 14 0 mount 1 1K 1K 78643K 1 0 vnodes 1180 74K 74K 78643K 1185 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 1794 195K 288K 78643K 12646 0 file desc 3 8K 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 22 1K 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 18 79K 79K 78643K 18 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 68 11K 12K 78643K 834 0 UVM aobj 2 2K 2K 78643K 2 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 6 0K 0K 78643K 6 0 temp 27 3541K 3605K 78643K 3026 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 0 1 0 1 1 0 8 0 rtpcb 96 17 0 15 1 0 1 1 0 8 0 rtentry 112 34 0 1 1 0 1 1 0 8 0 unpcb 120 27 0 19 1 0 1 1 0 8 0 syncache 280 5 0 5 1 0 1 1 0 8 1 tcpqe 32 11 0 11 1 1 0 1 0 8 0 tcpcb 640 8 0 5 1 0 1 1 0 8 0 inpcb 280 27 0 20 1 0 1 1 0 8 0 nd6 48 2 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 167 0 0 11 0 11 11 0 8 0 art_table 32 168 0 0 2 0 2 2 0 8 0 art_node 16 33 0 3 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1412 0 19 45 0 45 45 0 8 0 ffsino 240 1412 0 19 82 0 82 82 0 8 0 nchpl 144 1637 0 35 60 0 60 60 0 8 0 uvmvnodes 72 1421 0 0 26 0 26 26 0 8 0 vnodes 208 1421 0 0 75 0 75 75 0 8 0 namei 1024 3836 0 3836 1 0 1 1 0 8 1 scxspl 208 3978 0 3978 2 1 1 2 0 8 1 plimitpl 152 14 0 8 1 0 1 1 0 8 0 sigapl 432 196 0 184 2 0 2 2 0 8 0 knotepl 112 39 0 28 1 0 1 1 0 8 0 kqueuepl 104 2 0 0 1 0 1 1 0 8 0 pipepl 128 134 0 121 2 1 1 1 0 8 0 fdescpl 424 197 0 184 2 0 2 2 0 8 0 filepl 120 973 0 919 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 128 18 0 9 1 0 1 1 0 8 0 pgrppl 48 18 0 9 1 0 1 1 0 8 0 ucredpl 96 47 0 40 1 0 1 1 0 8 0 zombiepl 144 184 0 184 2 1 1 1 0 8 1 processpl 896 211 0 184 4 0 4 4 0 8 0 procpl 648 217 0 184 3 0 3 3 0 8 0 sockpl 384 71 0 54 2 0 2 2 0 8 0 mcl4k 4096 10 0 10 1 0 1 1 0 8 1 mcl2k 2048 5477 0 5446 8 3 5 8 0 8 0 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9463 0 9388 8 3 5 6 0 8 0 mbufpl: pool(0xffffffff8256d860:mbufpl): free list modified: page 0xfffffd803e15e000; item ordinal 1; addr 0xfffffd803e15e100 (p 0xfffffd803e8a2000); offset 0x0=0x0 pool(mbufpl): free list modified: page 0xfffffd803e15e000; item ordinal 1; addr 0xfffffd803e15e100 (p 0xfffffd803e8a2000); offset 0x0=0x0 mbufpl: pool(0xffffffff8256d860:mbufpl): page inconsistency: page 0xfffffd803e15e000; item ordinal 2; addr 0xf007159ad480d6d8 bufpl 280 5782 0 1322 319 0 319 319 0 8 0 anonpl 16 19895 0 18444 15 2 13 13 0 62 6 amapchunkpl 152 630 0 570 5 0 5 5 0 158 2 amappl16 192 116 0 89 2 0 2 2 0 8 0 amappl14 176 49 0 43 1 0 1 1 0 8 0 amappl12 160 7 0 4 1 0 1 1 0 8 0 amappl11 152 54 0 39 1 0 1 1 0 8 0 amappl10 144 10 0 7 2 1 1 1 0 8 0 amappl9 136 391 0 388 1 0 1 1 0 8 0 amappl8 128 109 0 99 1 0 1 1 0 8 0 amappl7 120 28 0 25 1 0 1 1 0 8 0 amappl6 112 55 0 49 1 0 1 1 0 8 0 amappl5 104 139 0 129 1 0 1 1 0 8 0 amappl4 96 421 0 399 1 0 1 1 0 8 0 amappl3 88 115 0 110 1 0 1 1 0 8 0 amappl2 80 836 0 781 4 1 3 3 0 8 1 amappl1 72 13149 0 12755 27 10 17 20 0 8 8 amappl 80 416 0 390 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 1 0 0 1 0 1 1 0 8 0 uaddrrnd 24 197 0 184 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 197 0 184 1 0 1 1 0 8 0 vmmpekpl 168 6152 0 6136 1 0 1 1 0 8 0 vmmpepl 168 28613 0 27757 89 12 77 77 0 357 39 vmsppl 272 196 0 184 1 0 1 1 0 8 0 pdppl 4096 400 0 368 5 0 5 5 0 8 0 pvpl 32 103196 0 99432 115 2 113 113 0 265 81 pmappl 200 196 0 184 1 0 1 1 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 123 0 8 4 0 4 4 0 8 0 ddb>