uvm_fault(0xffffffff82523810, 0xfffffd6816641082, 0, 1) -> e kernel: page 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 kernel page fault uvm_fault(0xffffffff82523810, 0xfffffd6816641082, 0, 1) -> e pool_do_put(ffffffff82581110,fffffd8037a30e00) at pool_do_put+0x12e sys/kern/subr_pool.c:844 end trace frame: 0xffff8000177a3550, count: 0 ddb> trace pool_do_put(ffffffff82581110,fffffd8037a30e00) at pool_do_put+0x12e sys/kern/subr_pool.c:844 pool_put(ffffffff82581110,fffffd8037a30e00) at pool_put+0x4b sys/kern/subr_pool.c:802 m_free(fffffd8037a30e00) at m_free+0x119 sys/kern/uipc_mbuf.c:459 rt_ifa_del(ffff800000acba00,800100,ffff800000acba40,0) at rt_ifa_del+0x436 sys/net/route.c:1201 in6_unlink_ifa(ffff800000acba00,ffff800000abf800) at in6_unlink_ifa+0x571 sys/netinet6/in6.c:943 in6_update_ifa(ffff800000abf800,ffff8000177a3ab0,0) at in6_update_ifa+0x13f7 sys/netinet6/in6.c:875 in6_ioctl_change_ifaddr(8080691a,ffff8000177a3ab0,ffff800000abf800) at in6_ioctl_change_ifaddr+0x40c sys/netinet6/in6.c:352 ifioctl(fffffd8037022000,8080691a,ffff8000177a3ab0,ffff8000ffff8290) at ifioctl+0xe60 sys/net/if.c:2291 sys_ioctl(ffff8000ffff8290,ffff8000177a3bc8,ffff8000177a3c10) at sys_ioctl+0x5b9 syscall(ffff8000177a3c90) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa4f5e164900, count: -11 ddb> show registers rdi 0xffffffff81dacb45 pool_do_put+0x125 rsi 0x14c rbp 0xffff8000177a3500 rbx 0xfffffd681664107a rdx 0x14d rcx 0xffff800015747000 rax 0xffff800015747000 r8 0x4 r9 0x5 r10 0x312d74a5a153e239 r11 0x8cc2417e7627ff8c r12 0xfffffd8037a30e00 r13 0xd0d775681664107a r14 0xffffffff82581110 mbpool r15 0xfffffd803df6e108 rip 0xffffffff81dacb4e pool_do_put+0x12e cs 0x8 rflags 0x10212 __ALIGN_SIZE+0xf212 rsp 0xffff8000177a3450 ss 0x10 pool_do_put+0x12e: movq 0x8(%rbx),%rbx ddb> show proc PROC (syz-executor.0) pid=448160 stat=onproc flags process=0 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff8518,0xffffffff825aae18 process=0xffff8000ffff6010 user=0xffff80001779e000, vmspace=0xfffffd803f012440 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 86998 84478 78451 0 2 0 syz-executor.0 *86998 448160 78451 0 7 0x4000000 syz-executor.0 78451 308806 39085 0 3 0x82 nanosleep syz-executor.0 32882 171371 39085 0 3 0x2 biowait syz-executor.1 93277 300212 0 0 3 0x14200 acct acct 7120 472454 0 0 3 0x14200 bored sosplice 39085 13335 5596 0 3 0x82 thrsleep syz-fuzzer 39085 6747 5596 0 3 0x4000082 nanosleep syz-fuzzer 39085 314219 5596 0 3 0x4000082 thrsleep syz-fuzzer 39085 274387 5596 0 3 0x4000082 thrsleep syz-fuzzer 39085 11523 5596 0 3 0x4000082 thrsleep syz-fuzzer 39085 343901 5596 0 3 0x4000082 kqread syz-fuzzer 39085 14187 5596 0 3 0x4000082 thrsleep syz-fuzzer 39085 109157 5596 0 3 0x4000082 thrsleep syz-fuzzer 5596 453814 78246 0 3 0x10008a pause ksh 78246 282594 60248 0 3 0x92 select sshd 76332 387423 1 0 3 0x100083 ttyin getty 60248 17302 1 0 3 0x80 select sshd 11321 378833 78546 73 3 0x100090 kqread syslogd 78546 327500 1 0 3 0x100082 netio syslogd 2054 170356 0 0 2 0x14200 zerothread 85988 6374 0 0 3 0x14200 aiodoned aiodoned 25904 5653 0 0 3 0x14200 syncer update 12856 412 0 0 3 0x14200 cleaner cleaner 63302 418918 0 0 3 0x14200 reaper reaper 86546 433173 0 0 3 0x14200 pgdaemon pagedaemon 38044 96865 0 0 3 0x14200 bored crynlk 98089 366415 0 0 3 0x14200 bored crypto 92836 378677 0 0 3 0x40014200 acpi0 acpi0 5286 449192 0 0 3 0x14200 bored softnet 63309 11188 0 0 3 0x14200 bored systqmp 98721 162251 0 0 3 0x14200 bored systq 15535 231358 0 0 3 0x40014200 bored softclock 99174 115900 0 0 3 0x40014200 idle0 44126 3237 0 0 3 0x14200 bored smr 1 264511 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 9502 6291K 7571K 78643K 14839 0 pcb 13 8K 9K 78643K 559 0 rtable 115 4K 4K 78643K 459 0 ifaddr 86 17K 18K 78643K 220 0 counters 19 16K 16K 78643K 19 0 ioctlops 0 0K 2K 78643K 58 0 iov 0 0K 16K 78643K 160 0 mount 1 1K 1K 78643K 1 0 vnodes 1225 77K 77K 78643K 2342 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 15 0 VM map 16 4K 4K 78643K 20 0 sem 12 0K 1K 78643K 215 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1794 195K 288K 78643K 12646 0 file desc 5 13K 25K 78643K 973 0 sigio 0 0K 0K 78643K 40 0 proc 43 30K 63K 78643K 500 0 subproc 32 2K 2K 78643K 68 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 100 0 in_multi 86 4K 4K 78643K 155 0 ether_multi 1 0K 0K 78643K 12 0 mrt 0 0K 0K 78643K 11 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 66 291K 291K 78643K 66 0 exec 0 0K 1K 78643K 305 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 118 88K 88K 78643K 3140 0 UVM aobj 53 3K 3K 78643K 57 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 741 0 NDP 13 0K 0K 78643K 46 0 temp 139 3563K 3631K 78643K 16083 0 kqueue 0 0K 0K 78643K 24 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 16 0 9 1 0 1 1 0 8 0 rtpcb 96 83 0 83 1 0 1 1 0 8 1 rtentry 112 93 0 47 2 0 2 2 0 8 0 unpcb 120 351 0 345 1 0 1 1 0 8 0 syncache 280 12 0 12 5 4 1 1 0 8 1 tcpqe 32 229 0 229 2 2 0 1 0 8 0 tcpcb 640 650 0 646 2 1 1 2 0 8 0 ipq 40 15 0 15 3 2 1 1 0 8 1 ipqe 40 376 0 376 3 2 1 1 0 8 1 inpcb 280 1766 0 1759 6 4 2 4 0 8 1 rttmr 72 2 0 2 2 2 0 1 0 8 0 nd6 48 11 0 7 1 0 1 1 0 8 0 pkpcb 40 4 0 4 1 1 0 1 0 8 0 ppxss 1128 12 0 12 4 3 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 405 0 178 16 1 15 15 0 8 0 art_table 32 407 0 178 2 0 2 2 0 8 0 art_node 16 92 0 50 1 0 1 1 0 8 0 sysvmsgpl 40 41 0 20 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 213 0 203 1 0 1 1 0 8 0 shmpl 112 55 0 4 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 2748 0 1348 46 0 46 46 0 8 0 ffsino 240 2748 0 1348 83 0 83 83 0 8 0 nchpl 144 4397 0 2799 60 0 60 60 0 8 0 uvmvnodes 72 3746 0 0 69 0 69 69 0 8 0 vnodes 208 3746 0 0 198 0 198 198 0 8 0 namei 1024 13545 0 13545 1 0 1 1 0 8 1 vcpupl 1984 14 0 0 2 0 2 2 0 8 0 vmpool 520 18 0 4 2 0 2 2 0 8 1 scsiplug 64 1 0 1 1 1 0 1 0 8 0 scxspl 208 13558 0 13557 11 8 3 7 0 8 2 plimitpl 152 79 0 73 1 0 1 1 0 8 0 sigapl 432 1137 0 1126 2 0 2 2 0 8 0 futexpl 56 27035 0 27035 1 0 1 1 0 8 1 knotepl 112 229 0 210 1 0 1 1 0 8 0 kqueuepl 104 241 0 239 1 0 1 1 0 8 0 pipepl 128 740 0 721 4 2 2 2 0 8 1 fdescpl 424 1138 0 1126 2 0 2 2 0 8 0 filepl 120 8659 0 8574 5 1 4 5 0 8 1 lockfpl 104 246 0 246 1 0 1 1 0 8 1 lockfspl 48 82 0 82 1 0 1 1 0 8 1 sessionpl 128 19 0 11 1 0 1 1 0 8 0 pgrppl 48 39 0 31 1 0 1 1 0 8 0 ucredpl 96 842 0 836 1 0 1 1 0 8 0 zombiepl 144 1126 0 1126 2 1 1 1 0 8 1 processpl 896 1154 0 1126 4 0 4 4 0 8 0 procpl 648 2303 0 2267 4 0 4 4 0 8 0 sosppl 144 17 0 17 4 3 1 1 0 8 1 sockpl 384 2216 0 2205 7 4 3 7 0 8 1 mcl64k 65536 582 0 581 64 63 1 64 0 8 0 mcl16k 16384 13 0 13 4 3 1 1 0 8 1 mcl12k 12288 19 0 19 4 3 1 1 0 8 1 mcl9k 9216 12 0 12 1 1 0 1 0 8 0 mcl8k 8192 36 0 36 1 0 1 1 0 8 1 mcl4k 4096 99 0 99 2 1 1 1 0 8 1 mcl2k2 2112 12 0 12 4 3 1 1 0 8 1 mcl2k 2048 71215 0 71182 15 9 6 13 0 8 1 mtagpl 80 39 0 24 2 1 1 1 0 8 0 mbufpl 256 120988 0 120786 68 44 24 37 0 8 10 mbufpl: pool(0xffffffff82581110:mbufpl): free list modified: page 0xfffffd8037a30000; item ordinal 0; addr 0xfffffd8037a30f00 (p 0xfffffd803df6e000); offset 0x0=0x0 mbufpl: pool(0xffffffff82581110:mbufpl): page inconsistency: page 0xfffffd8037a30000; item ordinal 1; addr 0xfffffd681664107a bufpl 280 9213 0 3821 386 0 386 386 0 8 0 anonpl 16 142889 0 121836 110 12 98 98 0 62 7 amapchunkpl 152 5019 0 4872 16 9 7 11 0 158 0 amappl16 192 7102 0 5920 92 22 70 70 0 8 7 amappl15 184 9 0 9 2 2 0 1 0 8 0 amappl14 176 173 0 164 1 0 1 1 0 8 0 amappl12 160 210 0 207 2 1 1 1 0 8 0 amappl11 152 55 0 50 1 0 1 1 0 8 0 amappl10 144 619 0 617 1 0 1 1 0 8 0 amappl9 136 305 0 302 1 0 1 1 0 8 0 amappl8 128 190 0 159 2 0 2 2 0 8 0 amappl7 120 646 0 639 1 0 1 1 0 8 0 amappl6 112 59 0 51 1 0 1 1 0 8 0 amappl5 104 926 0 916 1 0 1 1 0 8 0 amappl4 96 1365 0 1338 1 0 1 1 0 8 0 amappl3 88 135 0 130 1 0 1 1 0 8 0 amappl2 80 8264 0 8204 3 1 2 3 0 8 0 amappl1 72 28571 0 28202 27 18 9 20 0 8 0 amappl 80 2581 0 2537 2 0 2 2 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 56 0 4 1 0 1 1 0 8 0 uaddrrnd 24 1156 0 1126 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1156 0 1126 1 0 1 1 0 8 0 vmmpekpl 168 11345 0 11317 2 0 2 2 0 8 0 vmmpepl 168 143392 0 141139 180 48 132 160 0 357 26 vmsppl 272 1137 0 1126 2 1 1 2 0 8 0 pdppl 4096 2318 0 2274 8 1 7 7 0 8 1 pvpl 32 374227 0 351466 235 12 223 224 0 265 36 pmappl 200 1155 0 1130 2 0 2 2 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 271 0 125 7 1 6 7 0 8 0