login: 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(ffffffff82824af8,fffffd805a6c3200) at pool_do_put+0x12e sys/kern/subr_pool.c:836 pool_put(ffffffff82824af8,fffffd805a6c3200) at pool_put+0x4b sys/kern/subr_pool.c:794 m_free(fffffd805a6c3200) at m_free+0x119 sys/kern/uipc_mbuf.c:459 rt_ifa_del(ffff8000006b5500,800100,ffff8000006b5540,0) at rt_ifa_del+0x402 sys/net/route.c:1197 in6_unlink_ifa(ffff8000006b5500,ffff800000ac6800) at in6_unlink_ifa+0x571 sys/netinet6/in6.c:943 in6_update_ifa(ffff800000ac6800,ffff80001d77da70,0) at in6_update_ifa+0x13e7 sys/netinet6/in6.c:875 in6_ioctl_change_ifaddr(8080691a,ffff80001d77da70,ffff800000ac6800) at in6_ioctl_change_ifaddr+0x40c sys/netinet6/in6.c:352 ifioctl(fffffd805da77968,8080691a,ffff80001d77da70,ffff80001d6a9008) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001d6a9008,ffff80001d77db88,ffff80001d77dbd0) at sys_ioctl+0x4a1 syscall(ffff80001d77dc50) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe8870, count: -11 ddb> show registers rdi 0 rsi 0x6d5475f67b3c14d3 rbp 0xffff80001d77d4c0 rbx 0x6d5475f67b3c14d3 rdx 0xffff80001d77d410 rcx 0x1000 __ALIGN_SIZE rax 0x1 r8 0x4 r9 0x5 r10 0x56699d83fc07c9be r11 0x28a5bbcd1a3a6f6a r12 0xfffffd805a6c3200 r13 0x6d5475f67b3c14d3 r14 0xffffffff82824af8 mbpool r15 0xfffffd8067f85e28 rip 0xffffffff81f40ace pool_do_put+0x12e cs 0x8 rflags 0x10296 __ALIGN_SIZE+0xf296 rsp 0xffff80001d77d410 ss 0x10 pool_do_put+0x12e: movq 0x8(%rbx),%rbx ddb> show proc PROC (syz-executor.0) pid=284557 stat=onproc flags process=0 proc=0 pri=50, usrpri=51, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6aa388,0xffffffff82826758 process=0xffff80001d6c5230 user=0xffff80001d778000, vmspace=0xfffffd806bc0a220 estcpu=1, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND *24288 284557 34389 0 7 0 syz-executor.0 34389 90960 58762 0 3 0x82 nanosleep syz-executor.0 58762 58756 68228 0 3 0x82 thrsleep syz-execprog 58762 322483 68228 0 3 0x4000082 nanosleep syz-execprog 58762 517026 68228 0 3 0x4000082 thrsleep syz-execprog 58762 165799 68228 0 3 0x4000082 thrsleep syz-execprog 58762 257754 68228 0 3 0x4000082 kqread syz-execprog 58762 23108 68228 0 3 0x4000082 thrsleep syz-execprog 58762 278223 68228 0 3 0x4000082 thrsleep syz-execprog 58762 423200 68228 0 3 0x4000082 thrsleep syz-execprog 68228 317233 50474 0 3 0x10008a pause ksh 50474 250081 53643 0 3 0x92 select sshd 79327 47360 1 0 3 0x100083 ttyin getty 53643 328434 1 0 3 0x80 select sshd 46858 261496 88264 73 3 0x100090 kqread syslogd 88264 317683 1 0 3 0x100082 netio syslogd 24569 499981 1 77 3 0x100090 poll dhclient 68062 324640 1 0 3 0x80 poll dhclient 91122 120155 0 0 3 0x14200 bored smr 60972 144947 0 0 2 0x14200 zerothread 27860 523859 0 0 3 0x14200 aiodoned aiodoned 6827 306241 0 0 3 0x14200 syncer update 14828 475520 0 0 3 0x14200 cleaner cleaner 3288 449476 0 0 3 0x14200 reaper reaper 7156 375990 0 0 3 0x14200 pgdaemon pagedaemon 95793 24067 0 0 3 0x14200 bored crynlk 94110 201416 0 0 3 0x14200 bored crypto 92363 376969 0 0 3 0x40014200 acpi0 acpi0 87661 333949 0 0 3 0x14200 bored softnet 21986 479533 0 0 3 0x14200 bored systqmp 32317 476519 0 0 3 0x14200 bored systq 66360 303844 0 0 3 0x40014200 bored softclock 52921 180295 0 0 3 0x40014200 idle0 1 313600 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 9444 6320K 6320K 78643K 10543 0 pcb 13 8K 8K 78643K 13 0 rtable 83 2K 2K 78643K 154 0 ifaddr 33 9K 9K 78643K 33 0 counters 20 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 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 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 67 11K 12K 78643K 850 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 6 0K 0K 78643K 6 0 temp 23 3845K 3909K 78643K 1627 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 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 2 1 1 1 0 8 1 tcpcb 544 8 0 5 1 0 1 1 0 8 0 inpcb 296 27 0 20 1 0 1 1 0 8 0 nd6 48 3 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 144 0 0 9 0 9 9 0 8 0 art_table 32 145 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 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 3939 0 3939 2 1 1 1 0 8 1 scxspl 192 4250 0 4250 1 0 1 1 0 8 1 plimitpl 152 14 0 8 1 0 1 1 0 8 0 sigapl 424 212 0 185 4 0 4 4 0 8 0 knotepl 112 47 0 36 1 0 1 1 0 8 0 kqueuepl 144 2 0 0 1 0 1 1 0 8 0 pipepl 272 70 0 63 1 0 1 1 0 8 0 fdescpl 432 198 0 185 2 0 2 2 0 8 0 filepl 120 979 0 925 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 144 185 0 185 2 1 1 1 0 8 1 processpl 928 212 0 185 4 0 4 4 0 8 0 procpl 624 219 0 185 3 0 3 3 0 8 0 sockpl 400 71 0 54 2 0 2 2 0 8 0 mcl4k 4096 10 0 10 2 1 1 1 0 8 1 mcl2k 2048 5553 0 5525 6 2 4 6 0 8 0 mtagpl 96 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9698 0 9626 6 1 5 5 0 8 0 mbufpl: pool(0xffffffff82824af8:mbufpl): free list modified: page 0xfffffd805a6c3000; item ordinal 2; addr 0xfffffd805a6c3300 (p 0xfffffd8067f85000); offset 0x0=0x0 pool(mbufpl): free list modified: page 0xfffffd805a6c3000; item ordinal 2; addr 0xfffffd805a6c3300 (p 0xfffffd8067f85000); offset 0x0=0x0 mbufpl: pool(0xffffffff82824af8:mbufpl): page inconsistency: page 0xfffffd805a6c3000; item ordinal 3; addr 0x6d5475f67b3c14d3 bufpl 280 2962 0 126 203 0 203 203 0 8 0 anonpl 16 20954 0 19445 14 2 12 12 0 107 5 amapchunkpl 152 758 0 697 4 0 4 4 0 158 1 amappl16 192 140 0 111 2 0 2 2 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 27 0 23 1 0 1 1 0 8 0 amappl13 168 28 0 24 2 1 1 1 0 8 0 amappl12 160 11 0 9 2 1 1 1 0 8 0 amappl11 152 44 0 35 1 0 1 1 0 8 0 amappl10 144 13 0 7 1 0 1 1 0 8 0 amappl9 136 226 0 225 1 0 1 1 0 8 0 amappl8 128 235 0 229 1 0 1 1 0 8 0 amappl7 120 102 0 90 1 0 1 1 0 8 0 amappl6 112 20 0 18 2 1 1 1 0 8 0 amappl5 104 122 0 112 1 0 1 1 0 8 0 amappl4 96 427 0 404 1 0 1 1 0 8 0 amappl3 88 105 0 100 1 0 1 1 0 8 0 amappl2 80 785 0 731 3 1 2 2 0 8 0 amappl1 72 13364 0 12959 25 8 17 17 0 8 9 amappl 80 433 0 407 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 0 185 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 198 0 185 1 0 1 1 0 8 0 vmmpekpl 168 6069 0 6047 2 0 2 2 0 8 0 vmmpepl 168 29070 0 28187 81 12 69 69 0 357 30 vmsppl 272 197 0 185 1 0 1 1 0 8 0 pdppl 4096 402 0 370 5 0 5 5 0 8 0 pvpl 32 105266 0 101469 103 1 102 102 0 265 70 pmappl 200 197 0 185 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 214 0 7 6 0 6 6 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace pool_do_put(ffffffff82824af8,fffffd805a6c3200) at pool_do_put+0x12e sys/kern/subr_pool.c:836 pool_put(ffffffff82824af8,fffffd805a6c3200) at pool_put+0x4b sys/kern/subr_pool.c:794 m_free(fffffd805a6c3200) at m_free+0x119 sys/kern/uipc_mbuf.c:459 rt_ifa_del(ffff8000006b5500,800100,ffff8000006b5540,0) at rt_ifa_del+0x402 sys/net/route.c:1197 in6_unlink_ifa(ffff8000006b5500,ffff800000ac6800) at in6_unlink_ifa+0x571 sys/netinet6/in6.c:943 in6_update_ifa(ffff800000ac6800,ffff80001d77da70,0) at in6_update_ifa+0x13e7 sys/netinet6/in6.c:875 in6_ioctl_change_ifaddr(8080691a,ffff80001d77da70,ffff800000ac6800) at in6_ioctl_change_ifaddr+0x40c sys/netinet6/in6.c:352 ifioctl(fffffd805da77968,8080691a,ffff80001d77da70,ffff80001d6a9008) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001d6a9008,ffff80001d77db88,ffff80001d77dbd0) at sys_ioctl+0x4a1 syscall(ffff80001d77dc50) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe8870, count: -11 ddb> machine ddbcpu 1 No such command ddb> trace pool_do_put(ffffffff82824af8,fffffd805a6c3200) at pool_do_put+0x12e sys/kern/subr_pool.c:836 pool_put(ffffffff82824af8,fffffd805a6c3200) at pool_put+0x4b sys/kern/subr_pool.c:794 m_free(fffffd805a6c3200) at m_free+0x119 sys/kern/uipc_mbuf.c:459 rt_ifa_del(ffff8000006b5500,800100,ffff8000006b5540,0) at rt_ifa_del+0x402 sys/net/route.c:1197 in6_unlink_ifa(ffff8000006b5500,ffff800000ac6800) at in6_unlink_ifa+0x571 sys/netinet6/in6.c:943 in6_update_ifa(ffff800000ac6800,ffff80001d77da70,0) at in6_update_ifa+0x13e7 sys/netinet6/in6.c:875 in6_ioctl_change_ifaddr(8080691a,ffff80001d77da70,ffff800000ac6800) at in6_ioctl_change_ifaddr+0x40c sys/netinet6/in6.c:352 ifioctl(fffffd805da77968,8080691a,ffff80001d77da70,ffff80001d6a9008) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001d6a9008,ffff80001d77db88,ffff80001d77dbd0) at sys_ioctl+0x4a1 syscall(ffff80001d77dc50) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe8870, count: -11 ddb>