uvm_fault(0xfffffd80529ffcd0, 0x989b, 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(0xfffffd80529ffcd0, 0x989b, 0, 1) -> e pool_do_put(ffffffff82549c90,fffffd805ba1b600) at pool_do_put+0x12e sys/kern/subr_pool.c:836 end trace frame: 0xffff80001e483070, count: 0 ddb> trace pool_do_put(ffffffff82549c90,fffffd805ba1b600) at pool_do_put+0x12e sys/kern/subr_pool.c:836 pool_put(ffffffff82549c90,fffffd805ba1b600) at pool_put+0x4b sys/kern/subr_pool.c:794 m_free(fffffd805ba1b600) at m_free+0x119 sys/kern/uipc_mbuf.c:459 rt_ifa_del(ffff800000a47a00,800100,ffff800000a47a40,0) at rt_ifa_del+0x402 sys/net/route.c:1196 in6_unlink_ifa(ffff800000a47a00,ffff8000009f0800) at in6_unlink_ifa+0x571 sys/netinet6/in6.c:943 in6_update_ifa(ffff8000009f0800,ffff80001e4835d0,0) at in6_update_ifa+0x13f7 sys/netinet6/in6.c:875 in6_ioctl_change_ifaddr(8080691a,ffff80001e4835d0,ffff8000009f0800) at in6_ioctl_change_ifaddr+0x40c sys/netinet6/in6.c:352 ifioctl(fffffd805e5504b0,8080691a,ffff80001e4835d0,ffff80001d36d768) at ifioctl+0xe60 sys/net/if.c:2290 sys_ioctl(ffff80001d36d768,ffff80001e4836e8,ffff80001e483730) at sys_ioctl+0x4a1 syscall(ffff80001e4837b0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x24bcf736ac0, count: -11 ddb> show registers rdi 0xffffffff8146d1e5 pool_do_put+0x125 rsi 0x13e rbp 0xffff80001e483020 rbx 0x9893 __ALIGN_SIZE+0x8893 rdx 0x13f rcx 0xffff80001d445000 rax 0xffff80001d445000 r8 0x4 r9 0x5 r10 0x8c4084ae3c20ce51 r11 0xf683f81c12483cc7 r12 0xfffffd805ba1b600 r13 0xca71a7328ffc9893 r14 0xffffffff82549c90 mbpool r15 0xfffffd8066a09398 rip 0xffffffff8146d1ee pool_do_put+0x12e cs 0x8 rflags 0x10292 __ALIGN_SIZE+0xf292 rsp 0xffff80001e482f70 ss 0x10 pool_do_put+0x12e: movq 0x8(%rbx),%rbx ddb> show proc PROC (syz-executor.1) pid=334419 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=73, nice=20 forw=0xffffffffffffffff, list=0xffff80001d36d018,0xffffffff82594b30 process=0xffff8000ffffb510 user=0xffff80001e47e000, vmspace=0xfffffd80529ffcd0 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 8232 491251 57313 0 2 0 syz-executor.1 * 8232 334419 57313 0 7 0x4000000 syz-executor.1 37829 130277 80330 0 2 0 syz-executor.0 37829 395737 80330 0 3 0x4000080 poll syz-executor.0 37829 121293 80330 0 3 0x4000080 fsleep syz-executor.0 2002 413816 0 0 3 0x14200 acct acct 91323 71669 0 0 3 0x14200 bored sosplice 80330 88926 32177 0 3 0x82 nanosleep syz-executor.0 57313 331668 32177 0 3 0x82 nanosleep syz-executor.1 32177 91688 64974 0 3 0x82 thrsleep syz-fuzzer 32177 154794 64974 0 3 0x4000082 thrsleep syz-fuzzer 32177 156330 64974 0 3 0x4000082 thrsleep syz-fuzzer 32177 199777 64974 0 3 0x4000082 thrsleep syz-fuzzer 32177 503325 64974 0 3 0x4000082 thrsleep syz-fuzzer 32177 278305 64974 0 3 0x4000082 kqread syz-fuzzer 32177 133091 64974 0 3 0x4000082 thrsleep syz-fuzzer 32177 506394 64974 0 3 0x4000082 thrsleep syz-fuzzer 64974 146549 21048 0 3 0x10008a pause ksh 21048 328971 31088 0 3 0x92 select sshd 24217 474750 1 0 3 0x100083 ttyin getty 31088 387007 1 0 3 0x80 select sshd 2170 9095 56240 73 3 0x100090 kqread syslogd 56240 382100 1 0 3 0x100082 netio syslogd 93000 82333 1 77 3 0x100090 poll dhclient 86477 205447 1 0 3 0x80 poll dhclient 63167 119448 0 0 2 0x14200 zerothread 93916 452383 0 0 3 0x14200 aiodoned aiodoned 28799 442275 0 0 3 0x14200 syncer update 72319 102132 0 0 3 0x14200 cleaner cleaner 63939 84023 0 0 3 0x14200 reaper reaper 79420 225620 0 0 3 0x14200 pgdaemon pagedaemon 59264 259169 0 0 3 0x14200 bored crynlk 95038 318067 0 0 3 0x14200 bored crypto 77194 471627 0 0 3 0x40014200 acpi0 acpi0 38152 124122 0 0 3 0x14200 bored softnet 88852 283720 0 0 3 0x14200 bored systqmp 68700 393935 0 0 3 0x14200 bored systq 45552 30543 0 0 3 0x40014200 bored softclock 48221 349170 0 0 3 0x40014200 idle0 87020 58643 0 0 3 0x14200 bored smr 1 402916 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 9499 6342K 7306K 78643K 10930 0 pcb 13 8K 8K 78643K 120 0 rtable 98 3K 4K 78643K 313 0 ifaddr 69 14K 14K 78643K 149 0 counters 20 16K 16K 78643K 34 0 ioctlops 0 0K 2K 78643K 39 0 iov 0 0K 16K 78643K 74 0 mount 1 1K 1K 78643K 1 0 vnodes 1221 77K 77K 78643K 1377 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 5 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 178 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1794 195K 288K 78643K 12646 0 file desc 6 17K 25K 78643K 397 0 sigio 0 0K 0K 78643K 10 0 proc 52 38K 63K 78643K 389 0 subproc 32 2K 2K 78643K 36 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 32 0 in_multi 41 2K 2K 78643K 89 0 ether_multi 1 0K 0K 78643K 15 0 mrt 0 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 55 254K 254K 78643K 55 0 exec 0 0K 1K 78643K 229 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 123 54K 54K 78643K 1804 0 UVM aobj 28 2K 3K 78643K 32 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 80 0 NDP 11 0K 0K 78643K 29 0 temp 127 3018K 3082K 78643K 20407 0 kqueue 3 4K 14K 78643K 33 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 7 0 2 1 0 1 1 0 8 0 rtpcb 80 107 0 105 1 0 1 1 0 8 0 rtentry 112 51 0 12 2 0 2 2 0 8 0 unpcb 120 297 0 289 1 0 1 1 0 8 0 syncache 264 8 0 8 3 2 1 1 0 8 1 tcpqe 32 64 0 64 1 1 0 1 0 8 0 tcpcb 544 344 0 340 3 0 3 3 0 8 2 ipq 40 6 0 6 2 1 1 1 0 8 1 ipqe 40 102 0 102 2 1 1 1 0 8 1 inpcb 280 1125 0 1115 5 1 4 4 0 8 3 nd6 48 6 0 3 1 0 1 1 0 8 0 pkpcb 40 6 0 6 2 1 1 1 0 8 1 ppxss 1128 3 0 3 3 2 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 238 0 44 15 2 13 14 0 8 0 art_table 32 240 0 44 2 0 2 2 0 8 0 art_node 16 50 0 14 1 0 1 1 0 8 0 sysvmsgpl 40 26 0 14 1 0 1 1 0 8 0 semapl 112 176 0 166 1 0 1 1 0 8 0 shmpl 112 30 0 4 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 2005 0 609 46 0 46 46 0 8 0 ffsino 240 2005 0 609 83 0 83 83 0 8 0 nchpl 144 2789 0 1179 60 0 60 60 0 8 0 uvmvnodes 72 2112 0 0 39 0 39 39 0 8 0 vnodes 208 2112 0 0 112 0 112 112 0 8 0 namei 1024 8537 0 8537 1 0 1 1 0 8 1 vcpupl 1984 4 0 0 1 0 1 1 0 8 0 vmpool 528 6 0 2 2 1 1 1 0 8 0 scxspl 192 8280 0 8280 1 0 1 1 0 8 1 plimitpl 152 44 0 37 1 0 1 1 0 8 0 sigapl 432 568 0 554 2 0 2 2 0 8 0 futexpl 56 12430 0 12429 1 0 1 1 0 8 0 knotepl 112 89 0 70 1 0 1 1 0 8 0 kqueuepl 104 80 0 78 1 0 1 1 0 8 0 pipelkpl 16 201 0 191 1 0 1 1 0 8 0 pipepl 120 402 0 383 2 1 1 2 0 8 0 fdescpl 432 569 0 554 2 0 2 2 0 8 0 filepl 120 5231 0 5131 7 2 5 5 0 8 1 lockfpl 104 81 0 80 1 0 1 1 0 8 0 lockfspl 48 25 0 24 1 0 1 1 0 8 0 sessionpl 112 17 0 7 1 0 1 1 0 8 0 pgrppl 48 19 0 9 1 0 1 1 0 8 0 ucredpl 96 1017 0 1010 1 0 1 1 0 8 0 zombiepl 144 554 0 554 1 0 1 1 0 8 1 processpl 896 585 0 554 4 0 4 4 0 8 0 procpl 624 1082 0 1041 4 0 4 4 0 8 0 sosppl 128 18 0 18 2 1 1 1 0 8 1 sockpl 400 1537 0 1517 9 1 8 8 0 8 6 mcl64k 65536 32 0 32 1 0 1 1 0 8 1 mcl16k 16384 5 0 5 2 1 1 1 0 8 1 mcl12k 12288 11 0 11 3 2 1 1 0 8 1 mcl9k 9216 6 0 6 2 2 0 1 0 8 0 mcl8k 8192 21 0 21 1 0 1 1 0 8 1 mcl4k 4096 61 0 61 2 1 1 1 0 8 1 mcl2k2 2112 5 0 5 2 2 0 1 0 8 0 mcl2k 2048 65189 0 65147 14 8 6 13 0 8 0 mtagpl 80 18 0 11 2 1 1 1 0 8 0 mbufpl 256 105982 0 105898 26 9 17 17 0 8 8 mbufpl: pool(0xffffffff82549c90:mbufpl): free list modified: page 0xfffffd805ba1b000; item ordinal 4; addr 0xfffffd805ba1b700 (p 0xfffffd8066a09000); offset 0x0=0x0 mbufpl: pool(0xffffffff82549c90:mbufpl): page inconsistency: page 0xfffffd805ba1b000; item ordinal 5; addr 0x9893 bufpl 280 5063 0 182 349 0 349 349 0 8 0 anonpl 16 72586 0 56149 86 5 81 83 0 107 14 amapchunkpl 152 2678 0 2541 10 2 8 10 0 158 2 amappl16 192 2986 0 2081 59 7 52 58 0 8 6 amappl15 184 51 0 47 1 0 1 1 0 8 0 amappl14 176 389 0 382 1 0 1 1 0 8 0 amappl12 160 8 0 7 1 0 1 1 0 8 0 amappl11 152 45 0 34 1 0 1 1 0 8 0 amappl10 144 12 0 11 1 0 1 1 0 8 0 amappl9 136 557 0 553 1 0 1 1 0 8 0 amappl8 128 125 0 95 1 0 1 1 0 8 0 amappl7 120 91 0 80 1 0 1 1 0 8 0 amappl6 112 54 0 49 1 0 1 1 0 8 0 amappl5 104 148 0 138 1 0 1 1 0 8 0 amappl4 96 427 0 401 1 0 1 1 0 8 0 amappl3 88 861 0 844 1 0 1 1 0 8 0 amappl2 80 3760 0 3682 3 1 2 3 0 8 0 amappl1 72 19476 0 19040 25 16 9 20 0 8 0 amappl 80 1313 0 1266 3 1 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 31 0 4 1 0 1 1 0 8 0 uaddrrnd 24 575 0 556 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 575 0 556 1 0 1 1 0 8 0 vmmpekpl 168 7650 0 7619 2 0 2 2 0 8 0 vmmpepl 168 74118 0 71995 112 15 97 109 0 357 4 vmsppl 272 574 0 556 3 1 2 2 0 8 0 pdppl 4096 1156 0 1116 7 1 6 6 0 8 0 pvpl 32 211290 0 191760 196 3 193 195 0 265 35 pmappl 200 574 0 556 1 0 1 1 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 178 0 26 5 0 5 5 0 8 0