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(ffffffff82834208,fffffd805c1c8d00) at pool_do_put+0x12e sys/kern/subr_pool.c:836 pool_put(ffffffff82834208,fffffd805c1c8d00) at pool_put+0x4b sys/kern/subr_pool.c:794 m_free(fffffd805c1c8d00) at m_free+0x119 sys/kern/uipc_mbuf.c:459 rt_ifa_del(ffff8000006b5300,800100,ffff8000006b5340,0) at rt_ifa_del+0x402 sys/net/route.c:1197 in6_unlink_ifa(ffff8000006b5300,ffff800000ac4800) at in6_unlink_ifa+0x571 sys/netinet6/in6.c:943 in6_update_ifa(ffff800000ac4800,ffff80001d777610,0) at in6_update_ifa+0x13e7 sys/netinet6/in6.c:875 in6_ioctl_change_ifaddr(8080691a,ffff80001d777610,ffff800000ac4800) at in6_ioctl_change_ifaddr+0x40c sys/netinet6/in6.c:352 ifioctl(fffffd806984f640,8080691a,ffff80001d777610,ffff80001d6aa118) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001d6aa118,ffff80001d777728,ffff80001d777770) at sys_ioctl+0x4a1 syscall(ffff80001d7777f0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffedf00, count: -11 ddb> show registers rdi 0 rsi 0x81e9b4aa15b0ca7b rbp 0xffff80001d777060 rbx 0x81e9b4aa15b0ca7b rdx 0xffff80001d776fb0 rcx 0x1000 __ALIGN_SIZE rax 0x1 r8 0x4 r9 0x5 r10 0x575c2eb57affc1da r11 0x6aa0186f6be0d7a8 r12 0xfffffd805c1c8d00 r13 0x81e9b4aa15b0ca7b r14 0xffffffff82834208 mbpool r15 0xfffffd805e110b68 rip 0xffffffff81b0e96e pool_do_put+0x12e cs 0x8 rflags 0x10212 __ALIGN_SIZE+0xf212 rsp 0xffff80001d776fb0 ss 0x10 pool_do_put+0x12e: movq 0x8(%rbx),%rbx ddb> show proc PROC (syz-executor.0) pid=212344 stat=onproc flags process=0 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6a9ea8,0xffffffff82837320 process=0xffff80001d6c55d0 user=0xffff80001d772000, vmspace=0xfffffd806bc0a770 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND *80040 212344 99653 0 7 0 syz-executor.0 99653 484362 50447 0 3 0x82 nanosleep syz-executor.0 50447 257508 68744 0 3 0x82 thrsleep syz-execprog 50447 183357 68744 0 3 0x4000082 nanosleep syz-execprog 50447 486311 68744 0 3 0x4000082 thrsleep syz-execprog 50447 281884 68744 0 3 0x4000082 thrsleep syz-execprog 50447 512680 68744 0 3 0x4000082 kqread syz-execprog 50447 91717 68744 0 3 0x4000082 thrsleep syz-execprog 50447 128457 68744 0 3 0x4000082 thrsleep syz-execprog 68744 140570 69046 0 3 0x10008a pause ksh 69046 78421 31853 0 3 0x92 select sshd 15249 377595 1 0 3 0x100083 ttyin getty 31853 320400 1 0 3 0x80 select sshd 47804 252213 74592 73 3 0x100090 kqread syslogd 74592 356174 1 0 3 0x100082 netio syslogd 18532 231073 1 77 3 0x100090 poll dhclient 5531 138389 1 0 3 0x80 poll dhclient 62273 233016 0 0 3 0x14200 bored smr 99971 234435 0 0 2 0x14200 zerothread 97438 501892 0 0 3 0x14200 aiodoned aiodoned 56252 417208 0 0 3 0x14200 syncer update 836 40667 0 0 3 0x14200 cleaner cleaner 75816 185487 0 0 3 0x14200 reaper reaper 36560 92886 0 0 3 0x14200 pgdaemon pagedaemon 83572 425286 0 0 3 0x14200 bored crynlk 29428 12670 0 0 3 0x14200 bored crypto 93677 348745 0 0 3 0x40014200 acpi0 acpi0 34704 334623 0 0 3 0x14200 bored softnet 44071 164889 0 0 3 0x14200 bored systqmp 57078 260931 0 0 3 0x14200 bored systq 97688 232140 0 0 3 0x40014200 bored softclock 19027 113181 0 0 3 0x40014200 idle0 1 259036 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 14 8K 8K 78643K 57 0 rtable 83 2K 2K 78643K 153 0 ifaddr 33 9K 9K 78643K 76 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 61 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 69 11K 12K 78643K 902 0 UVM aobj 3 2K 2K 78643K 3 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 4 0K 0K 78643K 6 0 temp 23 3845K 3909K 78643K 1710 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 296 114 0 106 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 256 144 0 0 9 0 9 9 0 8 0 art_table 32 145 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 1458 0 64 88 0 88 88 0 8 0 ffsino 240 1458 0 64 83 0 83 83 0 8 0 nchpl 144 1720 0 123 60 0 60 60 0 8 0 uvmvnodes 72 1467 0 0 27 0 27 27 0 8 0 vnodes 208 1467 0 0 78 0 78 78 0 8 0 namei 1024 4111 0 4111 2 1 1 1 0 8 1 scxspl 192 4650 0 4650 1 0 1 1 0 8 1 plimitpl 152 14 0 8 1 0 1 1 0 8 0 sigapl 424 255 0 228 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 432 241 0 228 2 0 2 2 0 8 0 filepl 120 1109 0 1054 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 144 228 0 228 2 1 1 1 0 8 1 processpl 928 255 0 228 4 0 4 4 0 8 0 procpl 624 261 0 228 3 0 3 3 0 8 0 sockpl 400 158 0 140 2 0 2 2 0 8 0 mcl4k 4096 10 0 10 2 1 1 1 0 8 1 mcl2k 2048 5545 0 5517 6 2 4 6 0 8 0 mtagpl 96 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9700 0 9623 6 1 5 5 0 8 0 mbufpl: pool(0xffffffff82834208:mbufpl): free list modified: page 0xfffffd805c1c8000; item ordinal 0; addr 0xfffffd805c1c8e00 (p 0xfffffd805e110000); offset 0x0=0x0 pool(mbufpl): free list modified: page 0xfffffd805c1c8000; item ordinal 0; addr 0xfffffd805c1c8e00 (p 0xfffffd805e110000); offset 0x0=0x0 mbufpl: pool(0xffffffff82834208:mbufpl): page inconsistency: page 0xfffffd805c1c8000; item ordinal 1; addr 0x81e9b4aa15b0ca7b bufpl 280 3005 0 126 206 0 206 206 0 8 0 anonpl 16 22678 0 21118 14 2 12 12 0 107 4 amapchunkpl 152 842 0 781 4 0 4 4 0 158 1 amappl16 192 266 0 231 2 0 2 2 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 31 0 27 1 0 1 1 0 8 0 amappl13 168 64 0 60 2 1 1 1 0 8 0 amappl12 160 50 0 47 2 1 1 1 0 8 0 amappl11 152 46 0 37 1 0 1 1 0 8 0 amappl10 144 13 0 9 1 0 1 1 0 8 0 amappl9 136 219 0 216 1 0 1 1 0 8 0 amappl8 128 240 0 232 1 0 1 1 0 8 0 amappl7 120 101 0 90 1 0 1 1 0 8 0 amappl6 112 21 0 20 2 1 1 1 0 8 0 amappl5 104 146 0 136 1 0 1 1 0 8 0 amappl4 96 469 0 444 1 0 1 1 0 8 0 amappl3 88 151 0 143 1 0 1 1 0 8 0 amappl2 80 899 0 844 3 1 2 2 0 8 0 amappl1 72 13942 0 13546 24 7 17 17 0 8 8 amappl 80 484 0 458 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 241 0 228 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 241 0 228 1 0 1 1 0 8 0 vmmpekpl 168 6152 0 6131 2 0 2 2 0 8 0 vmmpepl 168 31115 0 30221 81 12 69 69 0 357 30 vmsppl 272 240 0 228 1 0 1 1 0 8 0 pdppl 4096 488 0 456 5 0 5 5 0 8 0 pvpl 32 110639 0 106783 107 5 102 102 0 265 69 pmappl 200 240 0 228 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 216 0 8 6 0 6 6 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace pool_do_put(ffffffff82834208,fffffd805c1c8d00) at pool_do_put+0x12e sys/kern/subr_pool.c:836 pool_put(ffffffff82834208,fffffd805c1c8d00) at pool_put+0x4b sys/kern/subr_pool.c:794 m_free(fffffd805c1c8d00) at m_free+0x119 sys/kern/uipc_mbuf.c:459 rt_ifa_del(ffff8000006b5300,800100,ffff8000006b5340,0) at rt_ifa_del+0x402 sys/net/route.c:1197 in6_unlink_ifa(ffff8000006b5300,ffff800000ac4800) at in6_unlink_ifa+0x571 sys/netinet6/in6.c:943 in6_update_ifa(ffff800000ac4800,ffff80001d777610,0) at in6_update_ifa+0x13e7 sys/netinet6/in6.c:875 in6_ioctl_change_ifaddr(8080691a,ffff80001d777610,ffff800000ac4800) at in6_ioctl_change_ifaddr+0x40c sys/netinet6/in6.c:352 ifioctl(fffffd806984f640,8080691a,ffff80001d777610,ffff80001d6aa118) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001d6aa118,ffff80001d777728,ffff80001d777770) at sys_ioctl+0x4a1 syscall(ffff80001d7777f0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffedf00, count: -11 ddb> machine ddbcpu 1 No such command ddb> trace pool_do_put(ffffffff82834208,fffffd805c1c8d00) at pool_do_put+0x12e sys/kern/subr_pool.c:836 pool_put(ffffffff82834208,fffffd805c1c8d00) at pool_put+0x4b sys/kern/subr_pool.c:794 m_free(fffffd805c1c8d00) at m_free+0x119 sys/kern/uipc_mbuf.c:459 rt_ifa_del(ffff8000006b5300,800100,ffff8000006b5340,0) at rt_ifa_del+0x402 sys/net/route.c:1197 in6_unlink_ifa(ffff8000006b5300,ffff800000ac4800) at in6_unlink_ifa+0x571 sys/netinet6/in6.c:943 in6_update_ifa(ffff800000ac4800,ffff80001d777610,0) at in6_update_ifa+0x13e7 sys/netinet6/in6.c:875 in6_ioctl_change_ifaddr(8080691a,ffff80001d777610,ffff800000ac4800) at in6_ioctl_change_ifaddr+0x40c sys/netinet6/in6.c:352 ifioctl(fffffd806984f640,8080691a,ffff80001d777610,ffff80001d6aa118) at ifioctl+0xe60 sys/net/if.c:2282 sys_ioctl(ffff80001d6aa118,ffff80001d777728,ffff80001d777770) at sys_ioctl+0x4a1 syscall(ffff80001d7777f0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffedf00, count: -11 ddb>