login: uvm_fault(0xfffffd806bc09ee0, 0x7bd857, 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(0xfffffd806bc09ee0, 0x7bd857, 0, 1) -> e pool_do_put(ffffffff82595600,fffffd805c259d00) at pool_do_put+0x12e sys/kern/subr_pool.c:836 end trace frame: 0xffff80001e832390, count: 0 ddb> trace pool_do_put(ffffffff82595600,fffffd805c259d00) at pool_do_put+0x12e sys/kern/subr_pool.c:836 pool_put(ffffffff82595600,fffffd805c259d00) at pool_put+0x4b sys/kern/subr_pool.c:794 m_free(fffffd805c259d00) at m_free+0x119 sys/kern/uipc_mbuf.c:459 rt_ifa_del(ffff800000a0ad00,800100,ffff800000a0ad40,0) at rt_ifa_del+0x402 sys/net/route.c:1197 in6_unlink_ifa(ffff800000a0ad00,ffff800000a09000) at in6_unlink_ifa+0x571 sys/netinet6/in6.c:943 in6_update_ifa(ffff800000a09000,ffff80001e8328f0,0) at in6_update_ifa+0x13f7 sys/netinet6/in6.c:875 in6_ioctl_change_ifaddr(8080691a,ffff80001e8328f0,ffff800000a09000) at in6_ioctl_change_ifaddr+0x40c sys/netinet6/in6.c:352 ifioctl(fffffd805dac7e18,8080691a,ffff80001e8328f0,ffff80001d739ea8) at ifioctl+0xe60 sys/net/if.c:2289 sys_ioctl(ffff80001d739ea8,ffff80001e832a08,ffff80001e832a50) at sys_ioctl+0x4a1 syscall(ffff80001e832ad0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2aca1843220, count: -11 ddb> show registers rdi 0xffffffff814af955 pool_do_put+0x125 rsi 0x169 rbp 0xffff80001e832340 rbx 0x7bd84f acpi_pdirpa+0x7a96b7 rdx 0x16a rcx 0xffff80001fa33000 rax 0xffff80001fa33000 r8 0x4 r9 0x5 r10 0x67d4e751196c66f6 r11 0xc7e50c86dc4e3c62 r12 0xfffffd805c259d00 r13 0x9eb79f433a7bd84f r14 0xffffffff82595600 mbpool r15 0xfffffd805bdfc6c0 rip 0xffffffff814af95e pool_do_put+0x12e cs 0x8 rflags 0x10296 __ALIGN_SIZE+0xf296 rsp 0xffff80001e832290 ss 0x10 pool_do_put+0x12e: movq 0x8(%rbx),%rbx ddb> show proc PROC (syz-executor.1) pid=227852 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=51, nice=20 forw=0xffffffffffffffff, list=0xffff80001d73a118,0xffffffff825c0e20 process=0xffff8000ffffb938 user=0xffff80001e82d000, vmspace=0xfffffd806bc09ee0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 15027 226179 3479 0 2 0 syz-executor.1 *15027 227852 3479 0 7 0x4000000 syz-executor.1 3479 490996 9549 0 3 0x82 nanosleep syz-executor.1 7103 16329 9549 0 3 0x2 biowait syz-executor.0 9549 201129 87917 0 3 0x82 thrsleep syz-fuzzer 9549 196609 87917 0 3 0x4000082 nanosleep syz-fuzzer 9549 168766 87917 0 3 0x4000082 kqread syz-fuzzer 9549 249121 87917 0 3 0x4000082 thrsleep syz-fuzzer 9549 381881 87917 0 3 0x4000082 thrsleep syz-fuzzer 9549 432507 87917 0 3 0x4000082 thrsleep syz-fuzzer 9549 449091 87917 0 3 0x4000082 thrsleep syz-fuzzer 87917 267656 2787 0 3 0x10008a pause ksh 2787 187755 72541 0 3 0x92 select sshd 17727 269731 1 0 3 0x100083 ttyin getty 72541 444246 1 0 3 0x80 select sshd 79909 60990 18610 73 3 0x100090 kqread syslogd 18610 451638 1 0 3 0x100082 netio syslogd 56716 459509 1 77 3 0x100090 poll dhclient 15949 517353 1 0 3 0x80 poll dhclient 98730 403569 0 0 3 0x14200 bored smr 87684 132990 0 0 2 0x14200 zerothread 42806 102785 0 0 3 0x14200 aiodoned aiodoned 21274 257162 0 0 3 0x14200 syncer update 57074 41341 0 0 3 0x14200 cleaner cleaner 68884 59481 0 0 3 0x14200 reaper reaper 4828 402261 0 0 3 0x14200 pgdaemon pagedaemon 12989 341556 0 0 3 0x14200 bored crynlk 2280 462815 0 0 3 0x14200 bored crypto 88667 38214 0 0 3 0x40014200 acpi0 acpi0 49241 305650 0 0 3 0x14200 bored softnet 83937 205151 0 0 3 0x14200 bored systqmp 75305 372692 0 0 3 0x14200 bored systq 93320 64009 0 0 3 0x40014200 bored softclock 8641 475274 0 0 3 0x40014200 idle0 1 65053 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 9468 6582K 6582K 78643K 10567 0 pcb 13 8K 8K 78643K 13 0 rtable 105 3K 3K 78643K 190 0 ifaddr 40 10K 10K 78643K 40 0 counters 21 16K 16K 78643K 21 0 ioctlops 0 0K 2K 78643K 15 0 mount 1 1K 1K 78643K 1 0 vnodes 1217 77K 77K 78643K 1226 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 5 13K 25K 78643K 41 0 proc 48 38K 63K 78643K 359 0 subproc 32 2K 2K 78643K 34 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 33 2K 2K 78643K 33 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 181 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 113 22K 23K 78643K 923 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 9 0K 0K 78643K 9 0 temp 61 3027K 3091K 78643K 1776 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 6 0 0 1 0 1 1 0 8 0 rtpcb 80 19 0 17 1 0 1 1 0 8 0 rtentry 112 45 0 1 2 0 2 2 0 8 0 unpcb 120 23 0 15 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 146 0 146 1 0 1 1 0 8 1 tcpcb 544 10 0 6 1 0 1 1 0 8 0 inpcb 280 35 0 27 1 0 1 1 0 8 0 nd6 48 6 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 188 0 0 12 0 12 12 0 8 0 art_table 32 189 0 0 2 0 2 2 0 8 0 art_node 16 44 0 4 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1427 0 30 88 0 88 88 0 8 0 ffsino 240 1427 0 30 83 0 83 83 0 8 0 nchpl 144 1658 0 57 60 0 60 60 0 8 0 uvmvnodes 72 1474 0 0 27 0 27 27 0 8 0 vnodes 208 1474 0 0 78 0 78 78 0 8 0 namei 1024 4033 0 4032 1 0 1 1 0 8 0 scxspl 192 4058 0 4057 1 0 1 1 0 8 0 plimitpl 152 14 0 7 1 0 1 1 0 8 0 sigapl 424 227 0 199 4 0 4 4 0 8 0 futexpl 56 141 0 141 1 0 1 1 0 8 1 knotepl 112 61 0 42 1 0 1 1 0 8 0 kqueuepl 144 2 0 0 1 0 1 1 0 8 0 pipelkpl 16 68 0 58 1 0 1 1 0 8 0 pipepl 120 136 0 117 1 0 1 1 0 8 0 fdescpl 432 213 0 199 2 0 2 2 0 8 0 filepl 120 1027 0 931 4 0 4 4 0 8 1 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 17 0 7 1 0 1 1 0 8 0 pgrppl 48 17 0 7 1 0 1 1 0 8 0 ucredpl 96 50 0 43 1 0 1 1 0 8 0 zombiepl 144 199 0 199 1 0 1 1 0 8 1 processpl 920 227 0 199 4 0 4 4 0 8 0 procpl 624 240 0 205 3 0 3 3 0 8 0 sockpl 400 77 0 59 2 0 2 2 0 8 0 mcl12k 12288 1 0 1 1 0 1 1 0 8 1 mcl4k 4096 9 0 9 2 1 1 1 0 8 1 mcl2k 2048 65164 0 65109 19 3 16 16 0 8 8 mtagpl 80 4 0 2 2 1 1 1 0 8 0 mbufpl 256 103349 0 103209 12 2 10 10 0 8 0 mbufpl: pool(0xffffffff82595600:mbufpl): free list modified: page 0xfffffd805c259000; item ordinal 13; addr 0xfffffd805c259e00 (p 0xfffffd805bdfc000); offset 0x0=0x0 mbufpl: pool(0xffffffff82595600:mbufpl): page inconsistency: page 0xfffffd805c259000; item ordinal 14; addr 0x7bd84f bufpl 280 3222 0 128 221 0 221 221 0 8 0 anonpl 16 33591 0 21096 53 2 51 51 0 107 0 amapchunkpl 152 975 0 848 7 0 7 7 0 158 1 amappl16 192 788 0 128 33 0 33 33 0 8 0 amappl15 184 9 0 5 1 0 1 1 0 8 0 amappl14 176 24 0 19 1 0 1 1 0 8 0 amappl13 168 23 0 22 1 0 1 1 0 8 0 amappl12 160 21 0 14 2 1 1 1 0 8 0 amappl11 152 43 0 34 1 0 1 1 0 8 0 amappl10 144 14 0 8 1 0 1 1 0 8 0 amappl9 136 355 0 354 1 0 1 1 0 8 0 amappl8 128 311 0 275 2 0 2 2 0 8 0 amappl7 120 110 0 96 1 0 1 1 0 8 0 amappl6 112 20 0 18 1 0 1 1 0 8 0 amappl5 104 183 0 171 1 0 1 1 0 8 0 amappl4 96 415 0 391 1 0 1 1 0 8 0 amappl3 88 102 0 94 1 0 1 1 0 8 0 amappl2 80 867 0 800 2 0 2 2 0 8 0 amappl1 72 13698 0 13286 23 6 17 17 0 8 7 amappl 80 461 0 421 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 24 213 0 199 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 213 0 199 1 0 1 1 0 8 0 vmmpekpl 168 5697 0 5670 2 0 2 2 0 8 0 vmmpepl 168 32892 0 31152 105 6 99 99 0 357 22 vmsppl 272 212 0 199 2 0 2 2 0 8 1 pdppl 4096 432 0 398 6 0 6 6 0 8 1 pvpl 32 120055 0 104647 129 0 129 129 0 265 2 pmappl 200 212 0 199 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 237 0 8 7 0 7 7 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace pool_do_put(ffffffff82595600,fffffd805c259d00) at pool_do_put+0x12e sys/kern/subr_pool.c:836 pool_put(ffffffff82595600,fffffd805c259d00) at pool_put+0x4b sys/kern/subr_pool.c:794 m_free(fffffd805c259d00) at m_free+0x119 sys/kern/uipc_mbuf.c:459 rt_ifa_del(ffff800000a0ad00,800100,ffff800000a0ad40,0) at rt_ifa_del+0x402 sys/net/route.c:1197 in6_unlink_ifa(ffff800000a0ad00,ffff800000a09000) at in6_unlink_ifa+0x571 sys/netinet6/in6.c:943 in6_update_ifa(ffff800000a09000,ffff80001e8328f0,0) at in6_update_ifa+0x13f7 sys/netinet6/in6.c:875 in6_ioctl_change_ifaddr(8080691a,ffff80001e8328f0,ffff800000a09000) at in6_ioctl_change_ifaddr+0x40c sys/netinet6/in6.c:352 ifioctl(fffffd805dac7e18,8080691a,ffff80001e8328f0,ffff80001d739ea8) at ifioctl+0xe60 sys/net/if.c:2289 sys_ioctl(ffff80001d739ea8,ffff80001e832a08,ffff80001e832a50) at sys_ioctl+0x4a1 syscall(ffff80001e832ad0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2aca1843220, count: -11 ddb> machine ddbcpu 1 No such command ddb> trace pool_do_put(ffffffff82595600,fffffd805c259d00) at pool_do_put+0x12e sys/kern/subr_pool.c:836 pool_put(ffffffff82595600,fffffd805c259d00) at pool_put+0x4b sys/kern/subr_pool.c:794 m_free(fffffd805c259d00) at m_free+0x119 sys/kern/uipc_mbuf.c:459 rt_ifa_del(ffff800000a0ad00,800100,ffff800000a0ad40,0) at rt_ifa_del+0x402 sys/net/route.c:1197 in6_unlink_ifa(ffff800000a0ad00,ffff800000a09000) at in6_unlink_ifa+0x571 sys/netinet6/in6.c:943 in6_update_ifa(ffff800000a09000,ffff80001e8328f0,0) at in6_update_ifa+0x13f7 sys/netinet6/in6.c:875 in6_ioctl_change_ifaddr(8080691a,ffff80001e8328f0,ffff800000a09000) at in6_ioctl_change_ifaddr+0x40c sys/netinet6/in6.c:352 ifioctl(fffffd805dac7e18,8080691a,ffff80001e8328f0,ffff80001d739ea8) at ifioctl+0xe60 sys/net/if.c:2289 sys_ioctl(ffff80001d739ea8,ffff80001e832a08,ffff80001e832a50) at sys_ioctl+0x4a1 syscall(ffff80001e832ad0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2aca1843220, count: -11