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(ffffffff825871b0,fffffd803223da00) at pool_do_put+0x12e sys/kern/subr_pool.c:844 pool_put(ffffffff825871b0,fffffd803223da00) at pool_put+0x4b sys/kern/subr_pool.c:802 m_free(fffffd803223da00) at m_free+0x119 sys/kern/uipc_mbuf.c:459 rt_ifa_del(ffff8000006a2200,800100,ffff8000006a2240,0) at rt_ifa_del+0x436 sys/net/route.c:1201 in6_unlink_ifa(ffff8000006a2200,ffff800000a65800) at in6_unlink_ifa+0x571 sys/netinet6/in6.c:943 in6_update_ifa(ffff800000a65800,ffff800014918a50,0) at in6_update_ifa+0x13f7 sys/netinet6/in6.c:875 in6_ioctl_change_ifaddr(8080691a,ffff800014918a50,ffff800000a65800) at in6_ioctl_change_ifaddr+0x40c sys/netinet6/in6.c:352 ifioctl(fffffd80363d5908,8080691a,ffff800014918a50,ffff8000ffff8770) at ifioctl+0xe60 sys/net/if.c:2291 sys_ioctl(ffff8000ffff8770,ffff800014918b68,ffff800014918bb0) at sys_ioctl+0x5b9 syscall(ffff800014918c30) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe3f50, count: -11 ddb> show registers rdi 0 rsi 0xae0d44042a6f rbp 0xffff8000149184a0 rbx 0xae0d44042a6f rdx 0xffff8000149183f0 rcx 0x1000 __ALIGN_SIZE rax 0xfffffd803223e000 r8 0x4 r9 0x5 r10 0x245f6d99e3226ca3 r11 0x870926ac1eaea13 r12 0xfffffd803223da00 r13 0x894ae0d44042a6f r14 0xffffffff825871b0 mbpool r15 0xfffffd80314fd710 rip 0xffffffff81b379fe pool_do_put+0x12e cs 0x8 rflags 0x10292 __ALIGN_SIZE+0xf292 rsp 0xffff8000149183f0 ss 0x10 pool_do_put+0x12e: movq 0x8(%rbx),%rbx ddb> show proc PROC (syz-executor.0) pid=203311 stat=onproc flags process=0 proc=0 pri=51, usrpri=51, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff89e8,0xffffffff825b1098 process=0xffff8000148a26d8 user=0xffff800014913000, vmspace=0xfffffd803f011000 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND *46575 203311 3254 0 7 0 syz-executor.0 3254 493168 12872 0 3 0x82 nanosleep syz-executor.0 12872 371691 71555 0 3 0x82 thrsleep syz-execprog 12872 326169 71555 0 3 0x4000082 nanosleep syz-execprog 12872 361825 71555 0 3 0x4000082 thrsleep syz-execprog 12872 133774 71555 0 3 0x4000082 thrsleep syz-execprog 12872 190119 71555 0 3 0x4000082 thrsleep syz-execprog 12872 352936 71555 0 3 0x4000082 kqread syz-execprog 12872 295337 71555 0 3 0x4000082 thrsleep syz-execprog 71555 162886 83990 0 3 0x10008a pause ksh 83990 117995 65538 0 3 0x92 select sshd 93124 175967 1 0 3 0x100083 ttyin getty 65538 507129 1 0 3 0x80 select sshd 75268 335598 20343 73 3 0x100090 kqread syslogd 20343 197966 1 0 3 0x100082 netio syslogd 66204 131100 1 77 3 0x100090 poll dhclient 5350 91142 1 0 3 0x80 poll dhclient 15816 490470 0 0 2 0x14200 zerothread 53668 51956 0 0 3 0x14200 aiodoned aiodoned 87008 326971 0 0 3 0x14200 syncer update 89960 232520 0 0 3 0x14200 cleaner cleaner 70095 242309 0 0 3 0x14200 reaper reaper 10284 405324 0 0 3 0x14200 pgdaemon pagedaemon 92788 155773 0 0 3 0x14200 bored crynlk 84766 456279 0 0 3 0x14200 bored crypto 4348 316052 0 0 3 0x40014200 acpi0 acpi0 33516 397720 0 0 3 0x14200 bored softnet 47369 68849 0 0 3 0x14200 bored systqmp 62729 434479 0 0 3 0x14200 bored systq 58194 237549 0 0 3 0x40014200 bored softclock 20546 489660 0 0 3 0x40014200 idle0 14073 416832 0 0 3 0x14200 bored smr 1 402618 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 Kern Lim devbuf 9442 6320K 6320K 78643K 10539 0 0 pcb 13 8K 8K 78643K 13 0 0 rtable 83 2K 2K 78643K 153 0 0 ifaddr 33 9K 9K 78643K 33 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 14 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1180 74K 74K 78643K 1185 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 1K 78643K 2 0 0 VM map 2 0K 0K 78643K 2 0 0 sem 2 0K 0K 78643K 2 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1794 195K 288K 78643K 12646 0 0 file desc 3 8K 12K 78643K 18 0 0 proc 47 38K 54K 78643K 318 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 in_multi 22 1K 1K 78643K 22 0 0 ether_multi 1 0K 0K 78643K 1 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 18 79K 79K 78643K 18 0 0 exec 0 0K 1K 78643K 171 0 0 pagedep 1 8K 8K 78643K 1 0 0 inodedep 1 32K 32K 78643K 1 0 0 newblk 1 0K 0K 78643K 1 0 0 VM swap 7 26K 26K 78643K 7 0 0 UVM amap 66 11K 11K 78643K 840 0 0 UVM aobj 2 2K 2K 78643K 2 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 NDP 6 0K 0K 78643K 6 0 0 temp 27 3521K 3585K 78643K 3026 0 0 SYN cache 2 16K 16K 78643K 2 0 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 9 0 5 1 0 1 1 0 8 0 inpcb 280 27 0 20 1 0 1 1 0 8 0 nd6 48 2 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 168 0 0 11 0 11 11 0 8 0 art_table 32 169 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 dino1pl 128 1412 0 19 45 0 45 45 0 8 0 ffsino 240 1412 0 19 82 0 82 82 0 8 0 nchpl 144 1651 0 50 60 0 60 60 0 8 0 uvmvnodes 72 1421 0 0 26 0 26 26 0 8 0 vnodes 208 1421 0 0 75 0 75 75 0 8 0 namei 1024 3836 0 3836 1 0 1 1 0 8 1 scxspl 192 3982 0 3982 2 1 1 2 0 8 1 plimitpl 152 14 0 8 1 0 1 1 0 8 0 sigapl 432 196 0 184 2 0 2 2 0 8 0 knotepl 112 39 0 28 1 0 1 1 0 8 0 kqueuepl 104 2 0 0 1 0 1 1 0 8 0 pipepl 128 134 0 121 1 0 1 1 0 8 0 fdescpl 424 197 0 184 2 0 2 2 0 8 0 filepl 120 973 0 919 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 47 0 40 1 0 1 1 0 8 0 zombiepl 144 184 0 184 1 0 1 1 0 8 1 processpl 864 211 0 184 4 0 4 4 0 8 0 procpl 632 217 0 184 3 0 3 3 0 8 0 sockpl 384 71 0 54 2 0 2 2 0 8 0 mcl4k 4096 10 0 10 1 0 1 1 0 8 1 mcl2k 2048 5483 0 5444 8 2 6 8 0 8 0 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9473 0 9391 7 1 6 6 0 8 0 mbufpl: pool(0xffffffff825871b0:mbufpl): free list modified: page 0xfffffd803223d000; item ordinal 10; addr 0xfffffd803223db00 (p 0xfffffd80314fd000); offset 0x0=0x0 mbufpl: pool(0xffffffff825871b0:mbufpl): page inconsistency: page 0xfffffd803223d000; item ordinal 11; addr 0xae0d44042a6f bufpl 256 5781 0 1322 279 0 279 279 0 8 0 anonpl 16 20039 0 18583 15 2 13 13 0 62 6 amapchunkpl 152 781 0 721 5 0 5 5 0 158 2 amappl16 192 130 0 104 2 0 2 2 0 8 0 amappl15 184 1 0 1 1 0 1 1 0 8 1 amappl14 176 47 0 41 1 0 1 1 0 8 0 amappl12 160 6 0 3 1 0 1 1 0 8 0 amappl11 152 56 0 41 1 0 1 1 0 8 0 amappl10 144 10 0 9 1 0 1 1 0 8 0 amappl9 136 393 0 391 1 0 1 1 0 8 0 amappl8 128 112 0 102 1 0 1 1 0 8 0 amappl7 120 31 0 28 1 0 1 1 0 8 0 amappl6 112 55 0 48 1 0 1 1 0 8 0 amappl5 104 129 0 120 1 0 1 1 0 8 0 amappl4 96 420 0 398 1 0 1 1 0 8 0 amappl3 88 118 0 111 1 0 1 1 0 8 0 amappl2 80 796 0 740 3 0 3 3 0 8 1 amappl1 72 13351 0 12954 27 10 17 20 0 8 8 amappl 80 420 0 394 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 24 197 0 184 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 197 0 184 1 0 1 1 0 8 0 vmmpekpl 168 6147 0 6132 1 0 1 1 0 8 0 vmmpepl 168 28651 0 27793 84 7 77 77 0 357 38 vmsppl 272 196 0 184 1 0 1 1 0 8 0 pdppl 4096 400 0 368 5 0 5 5 0 8 0 pvpl 32 103350 0 99592 113 0 113 113 0 265 81 pmappl 200 196 0 184 1 0 1 1 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 402 0 5 12 0 12 12 0 8 0 ddb>