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(ffffffff825871b0,fffffd8037f82700) at pool_do_put+0x12e sys/kern/subr_pool.c:844 pool_put(ffffffff825871b0,fffffd8037f82700) at pool_put+0x4b sys/kern/subr_pool.c:802 m_free(fffffd8037f82700) at m_free+0x119 sys/kern/uipc_mbuf.c:459 rt_ifa_del(ffff8000006a2500,800100,ffff8000006a2540,0) at rt_ifa_del+0x436 sys/net/route.c:1201 in6_unlink_ifa(ffff8000006a2500,ffff800000a65800) at in6_unlink_ifa+0x571 sys/netinet6/in6.c:943 in6_update_ifa(ffff800000a65800,ffff800014918ce0,0) at in6_update_ifa+0x13f7 sys/netinet6/in6.c:875 in6_ioctl_change_ifaddr(8080691a,ffff800014918ce0,ffff800000a65800) at in6_ioctl_change_ifaddr+0x40c sys/netinet6/in6.c:352 ifioctl(fffffd80363d7488,8080691a,ffff800014918ce0,ffff8000ffff8008) at ifioctl+0xe60 sys/net/if.c:2291 sys_ioctl(ffff8000ffff8008,ffff800014918df8,ffff800014918e40) at sys_ioctl+0x5b9 syscall(ffff800014918ec0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff2780, count: -11 ddb> show registers rdi 0 rsi 0xa7ed2520179ceefb rbp 0xffff800014918730 rbx 0xa7ed2520179ceefb rdx 0xffff800014918680 rcx 0x1000 __ALIGN_SIZE rax 0xfffffd8037f83000 r8 0x4 r9 0x5 r10 0x2c33b87513456f53 r11 0x39edd7fe3af17f36 r12 0xfffffd8037f82700 r13 0xa7ed2520179ceefb r14 0xffffffff825871b0 mbpool r15 0xfffffd80313d1710 rip 0xffffffff81b379fe pool_do_put+0x12e cs 0x8 rflags 0x10216 __ALIGN_SIZE+0xf216 rsp 0xffff800014918680 ss 0x10 pool_do_put+0x12e: movq 0x8(%rbx),%rbx ddb> show proc PROC (syz-executor.0) pid=26936 stat=onproc flags process=0 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff8280,0xffffffff825b1098 process=0xffff8000148a3458 user=0xffff800014913000, vmspace=0xfffffd803f011660 estcpu=9, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND *27218 26936 64757 0 7 0 syz-executor.0 64757 462711 21264 0 3 0x82 nanosleep syz-executor.0 21264 417196 97157 0 3 0x82 thrsleep syz-execprog 21264 118794 97157 0 3 0x4000082 nanosleep syz-execprog 21264 57531 97157 0 3 0x4000082 kqread syz-execprog 21264 440844 97157 0 3 0x4000082 thrsleep syz-execprog 21264 277535 97157 0 3 0x4000082 thrsleep syz-execprog 21264 11327 97157 0 3 0x4000082 thrsleep syz-execprog 21264 83274 97157 0 3 0x4000082 thrsleep syz-execprog 97157 265328 40440 0 3 0x10008a pause ksh 40440 257748 67638 0 3 0x92 select sshd 46315 268944 1 0 3 0x100083 ttyin getty 67638 436686 1 0 3 0x80 select sshd 14312 111196 85658 73 3 0x100090 kqread syslogd 85658 21494 1 0 3 0x100082 netio syslogd 89647 75746 1 77 3 0x100090 poll dhclient 33819 452011 1 0 3 0x80 poll dhclient 3449 168054 0 0 2 0x14200 zerothread 75165 291134 0 0 3 0x14200 aiodoned aiodoned 20202 28767 0 0 3 0x14200 syncer update 43716 268974 0 0 3 0x14200 cleaner cleaner 58029 385362 0 0 3 0x14200 reaper reaper 69163 513882 0 0 3 0x14200 pgdaemon pagedaemon 88326 422582 0 0 3 0x14200 bored crynlk 20591 224218 0 0 3 0x14200 bored crypto 2434 445141 0 0 3 0x40014200 acpi0 acpi0 98989 236798 0 0 3 0x14200 bored softnet 80304 319966 0 0 3 0x14200 bored systqmp 88284 130138 0 0 3 0x14200 bored systq 93179 329899 0 0 3 0x40014200 bored softclock 93119 519161 0 0 3 0x40014200 idle0 35789 248386 0 0 3 0x14200 bored smr 1 49 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 Kern Lim devbuf 9442 6320K 6320K 78643K 10539 0 0 pcb 13 8K 8K 78643K 13 0 0 rtable 83 2K 2K 78643K 153 0 0 ifaddr 33 9K 9K 78643K 33 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 14 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1180 74K 74K 78643K 1185 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 1K 78643K 2 0 0 VM map 2 0K 0K 78643K 2 0 0 sem 2 0K 0K 78643K 2 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1794 195K 288K 78643K 12646 0 0 file desc 3 8K 12K 78643K 18 0 0 proc 47 38K 54K 78643K 318 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 in_multi 22 1K 1K 78643K 22 0 0 ether_multi 1 0K 0K 78643K 1 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 18 79K 79K 78643K 18 0 0 exec 0 0K 1K 78643K 171 0 0 pagedep 1 8K 8K 78643K 1 0 0 inodedep 1 32K 32K 78643K 1 0 0 newblk 1 0K 0K 78643K 1 0 0 VM swap 7 26K 26K 78643K 7 0 0 UVM amap 66 11K 11K 78643K 838 0 0 UVM aobj 2 2K 2K 78643K 2 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 NDP 6 0K 0K 78643K 6 0 0 temp 27 3521K 3585K 78643K 3026 0 0 SYN cache 2 16K 16K 78643K 2 0 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 80 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 264 5 0 5 1 0 1 1 0 8 1 tcpcb 544 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 1651 0 50 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 192 3979 0 3979 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 1 0 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 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 47 0 40 1 0 1 1 0 8 0 zombiepl 144 184 0 184 1 0 1 1 0 8 1 processpl 864 211 0 184 4 0 4 4 0 8 0 procpl 632 217 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 5474 0 5444 7 2 5 7 0 8 1 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9481 0 9408 7 2 5 5 0 8 0 mbufpl: pool(0xffffffff825871b0:mbufpl): free list modified: page 0xfffffd8037f82000; item ordinal 1; addr 0xfffffd8037f82800 (p 0xfffffd80313d1000); offset 0x0=0x0 pool(mbufpl): free list modified: page 0xfffffd8037f82000; item ordinal 1; addr 0xfffffd8037f82800 (p 0xfffffd80313d1000); offset 0x0=0x0 mbufpl: pool(0xffffffff825871b0:mbufpl): page inconsistency: page 0xfffffd8037f82000; item ordinal 2; addr 0xa7ed2520179ceefb bufpl 256 5782 0 1323 279 0 279 279 0 8 0 anonpl 16 20070 0 18612 15 2 13 13 0 62 6 amapchunkpl 152 743 0 683 5 0 5 5 0 158 2 amappl16 192 138 0 111 2 0 2 2 0 8 0 amappl14 176 47 0 40 1 0 1 1 0 8 0 amappl13 168 1 0 0 1 0 1 1 0 8 0 amappl12 160 9 0 5 2 1 1 1 0 8 0 amappl11 152 46 0 35 1 0 1 1 0 8 0 amappl10 144 19 0 17 2 1 1 1 0 8 0 amappl9 136 391 0 389 1 0 1 1 0 8 0 amappl8 128 113 0 104 1 0 1 1 0 8 0 amappl7 120 31 0 28 1 0 1 1 0 8 0 amappl6 112 56 0 48 1 0 1 1 0 8 0 amappl5 104 137 0 128 1 0 1 1 0 8 0 amappl4 96 423 0 399 1 0 1 1 0 8 0 amappl3 88 117 0 110 1 0 1 1 0 8 0 amappl2 80 839 0 783 3 0 3 3 0 8 1 amappl1 72 13103 0 12704 26 8 18 20 0 8 8 amappl 80 418 0 392 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 6147 0 6133 1 0 1 1 0 8 0 vmmpepl 168 28576 0 27716 88 12 76 76 0 357 37 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 103161 0 99389 113 0 113 113 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 112 401 0 6 12 0 12 12 0 8 0 ddb>