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(ffffffff8281e150,fffffd805c351400) at pool_do_put+0x12e sys/kern/subr_pool.c:836 pool_put(ffffffff8281e150,fffffd805c351400) at pool_put+0x4b sys/kern/subr_pool.c:794 m_free(fffffd805c351400) at m_free+0x119 sys/kern/uipc_mbuf.c:459 rt_ifa_del(ffff8000006b5300,800100,ffff8000006b5340,0) at rt_ifa_del+0x402 sys/net/route.c:1197 in6_unlink_ifa(ffff8000006b5300,ffff800000ac6800) at in6_unlink_ifa+0x571 sys/netinet6/in6.c:943 in6_update_ifa(ffff800000ac6800,ffff80001d77f1e0,0) at in6_update_ifa+0x13e7 sys/netinet6/in6.c:875 in6_ioctl_change_ifaddr(8080691a,ffff80001d77f1e0,ffff800000ac6800) at in6_ioctl_change_ifaddr+0x40c sys/netinet6/in6.c:352 ifioctl(fffffd805da75198,8080691a,ffff80001d77f1e0,ffff80001d6a94e8) at ifioctl+0xe60 sys/net/if.c:2180 sys_ioctl(ffff80001d6a94e8,ffff80001d77f2f8,ffff80001d77f340) at sys_ioctl+0x4a1 syscall(ffff80001d77f3c0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcdc30, count: -11 ddb> show registers rdi 0 rsi 0xe6be86be62b0aab7 rbp 0xffff80001d77ec30 rbx 0xe6be86be62b0aab7 rdx 0xffff80001d77eb80 rcx 0x1000 __ALIGN_SIZE rax 0x1 r8 0x4 r9 0x5 r10 0xf7abeed03299c91e r11 0x3fa5b765fbaa0192 r12 0xfffffd805c351400 r13 0xe6be86be62b0aab7 r14 0xffffffff8281e150 mbpool r15 0xfffffd806c3c4e70 rip 0xffffffff814c514e pool_do_put+0x12e cs 0x8 rflags 0x10212 __ALIGN_SIZE+0xf212 rsp 0xffff80001d77eb80 ss 0x10 pool_do_put+0x12e: movq 0x8(%rbx),%rbx ddb> show proc PROC (syz-executor.0) pid=170595 stat=onproc flags process=0 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6a9ea8,0xffffffff827f75e0 process=0xffff80001d6c4e90 user=0xffff80001d77a000, vmspace=0xfffffd806bc0acc0 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND *67110 170595 75117 0 7 0 syz-executor.0 75117 463107 36248 0 3 0x82 nanosleep syz-executor.0 36248 180945 38878 0 3 0x82 thrsleep syz-execprog 36248 151602 38878 0 3 0x4000082 nanosleep syz-execprog 36248 49868 38878 0 3 0x4000082 thrsleep syz-execprog 36248 281665 38878 0 3 0x4000082 thrsleep syz-execprog 36248 321584 38878 0 3 0x4000082 kqread syz-execprog 36248 31899 38878 0 3 0x4000082 thrsleep syz-execprog 36248 428657 38878 0 3 0x4000082 thrsleep syz-execprog 36248 502002 38878 0 3 0x4000082 thrsleep syz-execprog 38878 475943 79386 0 3 0x10008a pause ksh 79386 289918 96128 0 3 0x92 select sshd 58000 193576 1 0 3 0x100083 ttyin getty 96128 36844 1 0 3 0x80 select sshd 15403 507427 62826 73 3 0x100090 kqread syslogd 62826 192495 1 0 3 0x100082 netio syslogd 98922 279331 1 77 3 0x100090 poll dhclient 65635 147932 1 0 3 0x80 poll dhclient 86275 56664 0 0 3 0x14200 bored smr 91727 75858 0 0 2 0x14200 zerothread 27693 311722 0 0 3 0x14200 aiodoned aiodoned 38691 90065 0 0 3 0x14200 syncer update 86845 364881 0 0 3 0x14200 cleaner cleaner 82207 208031 0 0 3 0x14200 reaper reaper 79308 37862 0 0 3 0x14200 pgdaemon pagedaemon 34209 49219 0 0 3 0x14200 bored crynlk 49536 30554 0 0 3 0x14200 bored crypto 73276 99504 0 0 3 0x40014200 acpi0 acpi0 78726 83205 0 0 3 0x14200 bored softnet 14030 323784 0 0 3 0x14200 bored systqmp 18257 398811 0 0 3 0x14200 bored systq 53756 179015 0 0 3 0x40014200 bored softclock 34532 59123 0 0 3 0x40014200 idle0 1 5577 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 9441 6320K 6320K 78643K 10540 0 pcb 13 8K 8K 78643K 13 0 rtable 83 2K 2K 78643K 153 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 69 11K 12K 78643K 862 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 1 0 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 256 145 0 0 10 0 10 10 0 8 0 art_table 32 146 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 1 0 1 1 0 8 1 scxspl 192 4191 0 4191 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 1 0 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 1 0 1 1 0 8 1 mcl2k 2048 5588 0 5549 8 2 6 8 0 8 0 mtagpl 96 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9751 0 9668 8 2 6 6 0 8 0 mbufpl: pool(0xffffffff8281e150:mbufpl): free list modified: page 0xfffffd805c351000; item ordinal 4; addr 0xfffffd805c351500 (p 0xfffffd806c3c4000); offset 0x0=0x0 pool(mbufpl): free list modified: page 0xfffffd805c351000; item ordinal 4; addr 0xfffffd805c351500 (p 0xfffffd806c3c4000); offset 0x0=0x0 mbufpl: pool(0xffffffff8281e150:mbufpl): page inconsistency: page 0xfffffd805c351000; item ordinal 5; addr 0xe6be86be62b0aab7 bufpl 280 2962 0 126 203 0 203 203 0 8 0 anonpl 16 22046 0 20536 14 2 12 12 0 107 3 amapchunkpl 152 760 0 699 4 0 4 4 0 158 1 amappl16 192 143 0 113 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 20 0 18 1 0 1 1 0 8 0 amappl12 160 8 0 6 2 1 1 1 0 8 0 amappl11 152 44 0 35 1 0 1 1 0 8 0 amappl10 144 15 0 10 1 0 1 1 0 8 0 amappl9 136 151 0 149 1 0 1 1 0 8 0 amappl8 128 233 0 227 1 0 1 1 0 8 0 amappl7 120 104 0 92 1 0 1 1 0 8 0 amappl6 112 22 0 19 2 1 1 1 0 8 0 amappl5 104 284 0 271 1 0 1 1 0 8 0 amappl4 96 426 0 403 1 0 1 1 0 8 0 amappl3 88 105 0 100 1 0 1 1 0 8 0 amappl2 80 807 0 749 2 0 2 2 0 8 0 amappl1 72 13684 0 13280 24 7 17 17 0 8 8 amappl 80 444 0 418 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 6078 0 6056 2 0 2 2 0 8 0 vmmpepl 168 29502 0 28620 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 106812 0 103015 102 0 102 102 0 265 68 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 112 217 0 6 7 0 7 7 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace pool_do_put(ffffffff8281e150,fffffd805c351400) at pool_do_put+0x12e sys/kern/subr_pool.c:836 pool_put(ffffffff8281e150,fffffd805c351400) at pool_put+0x4b sys/kern/subr_pool.c:794 m_free(fffffd805c351400) at m_free+0x119 sys/kern/uipc_mbuf.c:459 rt_ifa_del(ffff8000006b5300,800100,ffff8000006b5340,0) at rt_ifa_del+0x402 sys/net/route.c:1197 in6_unlink_ifa(ffff8000006b5300,ffff800000ac6800) at in6_unlink_ifa+0x571 sys/netinet6/in6.c:943 in6_update_ifa(ffff800000ac6800,ffff80001d77f1e0,0) at in6_update_ifa+0x13e7 sys/netinet6/in6.c:875 in6_ioctl_change_ifaddr(8080691a,ffff80001d77f1e0,ffff800000ac6800) at in6_ioctl_change_ifaddr+0x40c sys/netinet6/in6.c:352 ifioctl(fffffd805da75198,8080691a,ffff80001d77f1e0,ffff80001d6a94e8) at ifioctl+0xe60 sys/net/if.c:2180 sys_ioctl(ffff80001d6a94e8,ffff80001d77f2f8,ffff80001d77f340) at sys_ioctl+0x4a1 syscall(ffff80001d77f3c0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcdc30, count: -11 ddb> machine ddbcpu 1 No such command ddb> trace pool_do_put(ffffffff8281e150,fffffd805c351400) at pool_do_put+0x12e sys/kern/subr_pool.c:836 pool_put(ffffffff8281e150,fffffd805c351400) at pool_put+0x4b sys/kern/subr_pool.c:794 m_free(fffffd805c351400) at m_free+0x119 sys/kern/uipc_mbuf.c:459 rt_ifa_del(ffff8000006b5300,800100,ffff8000006b5340,0) at rt_ifa_del+0x402 sys/net/route.c:1197 in6_unlink_ifa(ffff8000006b5300,ffff800000ac6800) at in6_unlink_ifa+0x571 sys/netinet6/in6.c:943 in6_update_ifa(ffff800000ac6800,ffff80001d77f1e0,0) at in6_update_ifa+0x13e7 sys/netinet6/in6.c:875 in6_ioctl_change_ifaddr(8080691a,ffff80001d77f1e0,ffff800000ac6800) at in6_ioctl_change_ifaddr+0x40c sys/netinet6/in6.c:352 ifioctl(fffffd805da75198,8080691a,ffff80001d77f1e0,ffff80001d6a94e8) at ifioctl+0xe60 sys/net/if.c:2180 sys_ioctl(ffff80001d6a94e8,ffff80001d77f2f8,ffff80001d77f340) at sys_ioctl+0x4a1 syscall(ffff80001d77f3c0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcdc30, count: -11 ddb>