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(ffffffff82844fb8,fffffd8064e5c000) at pool_do_put+0x12e sys/kern/subr_pool.c:836 pool_put(ffffffff82844fb8,fffffd8064e5c000) at pool_put+0x4b sys/kern/subr_pool.c:794 m_free(fffffd8064e5c000) at m_free+0x119 sys/kern/uipc_mbuf.c:459 rt_ifa_del(ffff8000006b5400,800100,ffff8000006b5440,0) at rt_ifa_del+0x402 sys/net/route.c:1197 in6_unlink_ifa(ffff8000006b5400,ffff800000ac4800) at in6_unlink_ifa+0x571 sys/netinet6/in6.c:943 in6_update_ifa(ffff800000ac4800,ffff80001d7723a0,0) at in6_update_ifa+0x13e7 sys/netinet6/in6.c:875 in6_ioctl_change_ifaddr(8080691a,ffff80001d7723a0,ffff800000ac4800) at in6_ioctl_change_ifaddr+0x40c sys/netinet6/in6.c:352 ifioctl(fffffd805dab17d8,8080691a,ffff80001d7723a0,ffff80001d6aa118) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001d6aa118,ffff80001d7724b8,ffff80001d772500) at sys_ioctl+0x4a1 syscall(ffff80001d772580) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbb9c0, count: -11 ddb> show registers rdi 0 rsi 0x856af509e3563319 rbp 0xffff80001d771df0 rbx 0x856af509e3563319 rdx 0xffff80001d771d40 rcx 0x1000 __ALIGN_SIZE rax 0x1 r8 0x4 r9 0x5 r10 0x543660da84db426c r11 0x99b80f235b86d2ef r12 0xfffffd8064e5c000 r13 0x856af509e3563319 r14 0xffffffff82844fb8 mbpool r15 0xfffffd805e111ee8 rip 0xffffffff81c51d4e pool_do_put+0x12e cs 0x8 rflags 0x10216 __ALIGN_SIZE+0xf216 rsp 0xffff80001d771d40 ss 0x10 pool_do_put+0x12e: movq 0x8(%rbx),%rbx ddb> show proc PROC (syz-executor.0) pid=313642 stat=onproc flags process=0 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6a9ea8,0xffffffff8284e5f8 process=0xffff8000ffffb208 user=0xffff80001d76d000, vmspace=0xfffffd806bc0a550 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND *88613 313642 66590 0 7 0 syz-executor.0 66590 377123 77223 0 3 0x82 nanosleep syz-executor.0 77223 39375 40286 0 3 0x82 kqread syz-execprog 77223 68668 40286 0 3 0x4000082 nanosleep syz-execprog 77223 440792 40286 0 3 0x4000082 thrsleep syz-execprog 77223 307188 40286 0 3 0x4000082 thrsleep syz-execprog 77223 275256 40286 0 3 0x4000082 thrsleep syz-execprog 77223 504356 40286 0 3 0x4000082 thrsleep syz-execprog 77223 446162 40286 0 3 0x4000082 thrsleep syz-execprog 40286 365722 83025 0 3 0x10008a pause ksh 83025 196302 13316 0 3 0x92 select sshd 56436 68895 1 0 3 0x100083 ttyin getty 13316 434408 1 0 3 0x80 select sshd 74161 89295 57087 73 3 0x100090 kqread syslogd 57087 105107 1 0 3 0x100082 netio syslogd 12311 450101 1 77 3 0x100090 poll dhclient 48868 450624 1 0 3 0x80 poll dhclient 41853 85522 0 0 3 0x14200 bored smr 94267 207680 0 0 2 0x14200 zerothread 80680 120900 0 0 3 0x14200 aiodoned aiodoned 50924 147718 0 0 3 0x14200 syncer update 63977 127514 0 0 3 0x14200 cleaner cleaner 38534 360183 0 0 3 0x14200 reaper reaper 40423 74745 0 0 3 0x14200 pgdaemon pagedaemon 80841 119907 0 0 3 0x14200 bored crynlk 55274 442642 0 0 3 0x14200 bored crypto 81045 460542 0 0 3 0x40014200 acpi0 acpi0 7767 265095 0 0 3 0x14200 bored softnet 57710 229009 0 0 3 0x14200 bored systqmp 65772 275758 0 0 3 0x14200 bored systq 53104 284959 0 0 3 0x40014200 bored softclock 54712 297854 0 0 3 0x40014200 idle0 1 140505 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 6321K 6321K 78643K 10543 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 67 11K 12K 78643K 854 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 23 3845K 3909K 78643K 1622 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 256 145 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 2 1 1 1 0 8 1 scxspl 192 4215 0 4215 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 2 1 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 920 212 0 185 4 0 4 4 0 8 0 procpl 624 218 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 5546 0 5518 6 2 4 6 0 8 0 mtagpl 96 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9721 0 9650 5 0 5 5 0 8 0 mbufpl: pool(0xffffffff82844fb8:mbufpl): free list modified: page 0xfffffd8064e5c000; item ordinal 1; addr 0xfffffd8064e5c100 (p 0xfffffd805e111000); offset 0x0=0x0 pool(mbufpl): free list modified: page 0xfffffd8064e5c000; item ordinal 1; addr 0xfffffd8064e5c100 (p 0xfffffd805e111000); offset 0x0=0x0 mbufpl: pool(0xffffffff82844fb8:mbufpl): page inconsistency: page 0xfffffd8064e5c000; item ordinal 2; addr 0x856af509e3563319 bufpl 280 2959 0 125 203 0 203 203 0 8 0 anonpl 16 21960 0 20456 14 2 12 12 0 107 4 amapchunkpl 152 853 0 792 4 0 4 4 0 158 1 amappl16 192 142 0 114 2 0 2 2 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 28 0 23 1 0 1 1 0 8 0 amappl13 168 23 0 19 2 1 1 1 0 8 0 amappl12 160 13 0 10 2 1 1 1 0 8 0 amappl11 152 42 0 33 1 0 1 1 0 8 0 amappl10 144 13 0 10 1 0 1 1 0 8 0 amappl9 136 196 0 195 1 0 1 1 0 8 0 amappl8 128 237 0 231 1 0 1 1 0 8 0 amappl7 120 106 0 94 1 0 1 1 0 8 0 amappl6 112 20 0 17 2 1 1 1 0 8 0 amappl5 104 190 0 179 1 0 1 1 0 8 0 amappl4 96 426 0 405 1 0 1 1 0 8 0 amappl3 88 108 0 102 1 0 1 1 0 8 0 amappl2 80 808 0 751 3 1 2 2 0 8 0 amappl1 72 13917 0 13516 24 7 17 17 0 8 8 amappl 80 440 0 414 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 24 198 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 6122 0 6103 1 0 1 1 0 8 0 vmmpepl 168 29133 0 28268 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 106609 0 102820 103 1 102 102 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 112 215 0 7 6 0 6 6 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace pool_do_put(ffffffff82844fb8,fffffd8064e5c000) at pool_do_put+0x12e sys/kern/subr_pool.c:836 pool_put(ffffffff82844fb8,fffffd8064e5c000) at pool_put+0x4b sys/kern/subr_pool.c:794 m_free(fffffd8064e5c000) at m_free+0x119 sys/kern/uipc_mbuf.c:459 rt_ifa_del(ffff8000006b5400,800100,ffff8000006b5440,0) at rt_ifa_del+0x402 sys/net/route.c:1197 in6_unlink_ifa(ffff8000006b5400,ffff800000ac4800) at in6_unlink_ifa+0x571 sys/netinet6/in6.c:943 in6_update_ifa(ffff800000ac4800,ffff80001d7723a0,0) at in6_update_ifa+0x13e7 sys/netinet6/in6.c:875 in6_ioctl_change_ifaddr(8080691a,ffff80001d7723a0,ffff800000ac4800) at in6_ioctl_change_ifaddr+0x40c sys/netinet6/in6.c:352 ifioctl(fffffd805dab17d8,8080691a,ffff80001d7723a0,ffff80001d6aa118) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001d6aa118,ffff80001d7724b8,ffff80001d772500) at sys_ioctl+0x4a1 syscall(ffff80001d772580) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbb9c0, count: -11 ddb> machine ddbcpu 1 No such command ddb> trace pool_do_put(ffffffff82844fb8,fffffd8064e5c000) at pool_do_put+0x12e sys/kern/subr_pool.c:836 pool_put(ffffffff82844fb8,fffffd8064e5c000) at pool_put+0x4b sys/kern/subr_pool.c:794 m_free(fffffd8064e5c000) at m_free+0x119 sys/kern/uipc_mbuf.c:459 rt_ifa_del(ffff8000006b5400,800100,ffff8000006b5440,0) at rt_ifa_del+0x402 sys/net/route.c:1197 in6_unlink_ifa(ffff8000006b5400,ffff800000ac4800) at in6_unlink_ifa+0x571 sys/netinet6/in6.c:943 in6_update_ifa(ffff800000ac4800,ffff80001d7723a0,0) at in6_update_ifa+0x13e7 sys/netinet6/in6.c:875 in6_ioctl_change_ifaddr(8080691a,ffff80001d7723a0,ffff800000ac4800) at in6_ioctl_change_ifaddr+0x40c sys/netinet6/in6.c:352 ifioctl(fffffd805dab17d8,8080691a,ffff80001d7723a0,ffff80001d6aa118) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001d6aa118,ffff80001d7724b8,ffff80001d772500) at sys_ioctl+0x4a1 syscall(ffff80001d772580) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbb9c0, count: -11 ddb>