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(ffffffff82862e28,fffffd805ac78600) at pool_do_put+0x12e sys/kern/subr_pool.c:836 pool_put(ffffffff82862e28,fffffd805ac78600) at pool_put+0x4b sys/kern/subr_pool.c:794 m_free(fffffd805ac78600) at m_free+0x119 sys/kern/uipc_mbuf.c:459 rt_ifa_del(ffff8000006b5400,800100,ffff8000006b5440,0) at rt_ifa_del+0x402 sys/net/route.c:1197 in6_unlink_ifa(ffff8000006b5400,ffff800000ac6800) at in6_unlink_ifa+0x571 sys/netinet6/in6.c:943 in6_update_ifa(ffff800000ac6800,ffff80001d775500,0) at in6_update_ifa+0x13e7 sys/netinet6/in6.c:875 in6_ioctl_change_ifaddr(8080691a,ffff80001d775500,ffff800000ac6800) at in6_ioctl_change_ifaddr+0x40c sys/netinet6/in6.c:352 ifioctl(fffffd805da67c88,8080691a,ffff80001d775500,ffff80001d6a99c8) at ifioctl+0xe60 sys/net/if.c:2180 sys_ioctl(ffff80001d6a99c8,ffff80001d775618,ffff80001d775660) at sys_ioctl+0x4a1 syscall(ffff80001d7756e0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbeb40, count: -11 ddb> show registers rdi 0 rsi 0x7bdea5d635875eb2 rbp 0xffff80001d774f50 rbx 0x7bdea5d635875eb2 rdx 0xffff80001d774ea0 rcx 0x1000 __ALIGN_SIZE rax 0x1 r8 0x4 r9 0x5 r10 0xdeeca30cf919f702 r11 0xffa02dd591df577a r12 0xfffffd805ac78600 r13 0x7bdea5d635875eb2 r14 0xffffffff82862e28 mbpool r15 0xfffffd805e101e08 rip 0xffffffff813533be pool_do_put+0x12e cs 0x8 rflags 0x10296 __ALIGN_SIZE+0xf296 rsp 0xffff80001d774ea0 ss 0x10 pool_do_put+0x12e: movq 0x8(%rbx),%rbx ddb> show proc PROC (syz-executor.0) pid=144007 stat=onproc flags process=0 proc=0 pri=50, usrpri=51, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6a9c38,0xffffffff82864ba8 process=0xffff80001d6c4e90 user=0xffff80001d770000, vmspace=0xfffffd806bc09dd0 estcpu=1, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND *13195 144007 6517 0 7 0 syz-executor.0 6517 439557 15621 0 3 0x82 nanosleep syz-executor.0 15621 33249 48713 0 3 0x82 kqread syz-execprog 15621 412373 48713 0 3 0x4000082 nanosleep syz-execprog 15621 515791 48713 0 3 0x4000082 thrsleep syz-execprog 15621 333392 48713 0 3 0x4000082 thrsleep syz-execprog 15621 484801 48713 0 3 0x4000082 thrsleep syz-execprog 15621 316996 48713 0 3 0x4000082 thrsleep syz-execprog 15621 453197 48713 0 3 0x4000082 thrsleep syz-execprog 15621 166050 48713 0 3 0x4000082 thrsleep syz-execprog 48713 10556 48755 0 3 0x10008a pause ksh 48755 74824 55997 0 3 0x92 select sshd 96557 126058 1 0 3 0x100083 ttyin getty 55997 389310 1 0 3 0x80 select sshd 96211 229324 61573 73 3 0x100090 kqread syslogd 61573 55092 1 0 3 0x100082 netio syslogd 6130 488560 1 77 3 0x100090 poll dhclient 65616 367248 1 0 3 0x80 poll dhclient 76908 115314 0 0 3 0x14200 bored smr 53403 254299 0 0 2 0x14200 zerothread 3821 351357 0 0 3 0x14200 aiodoned aiodoned 46323 442128 0 0 3 0x14200 syncer update 10571 4397 0 0 3 0x14200 cleaner cleaner 53038 84389 0 0 3 0x14200 reaper reaper 48486 361395 0 0 3 0x14200 pgdaemon pagedaemon 10296 207308 0 0 3 0x14200 bored crynlk 89930 53841 0 0 3 0x14200 bored crypto 26259 469766 0 0 3 0x40014200 acpi0 acpi0 23809 96907 0 0 3 0x14200 bored softnet 77392 145581 0 0 3 0x14200 bored systqmp 64602 278367 0 0 3 0x14200 bored systq 3310 281426 0 0 3 0x40014200 bored softclock 71939 427750 0 0 3 0x40014200 idle0 1 56288 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 9441 6320K 6320K 78643K 10540 0 pcb 13 8K 8K 78643K 13 0 rtable 83 2K 2K 78643K 153 0 ifaddr 33 9K 9K 78643K 33 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 18 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 839 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 6 0K 0K 78643K 6 0 temp 23 3845K 3909K 78643K 1626 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 27 0 20 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 1415 0 21 88 0 88 88 0 8 0 ffsino 240 1415 0 21 82 0 82 82 0 8 0 nchpl 144 1634 0 36 60 0 60 60 0 8 0 uvmvnodes 72 1424 0 0 26 0 26 26 0 8 0 vnodes 208 1424 0 0 75 0 75 75 0 8 0 namei 1024 3939 0 3939 2 1 1 1 0 8 1 scxspl 192 4447 0 4447 1 0 1 1 0 8 1 plimitpl 152 14 0 8 1 0 1 1 0 8 0 sigapl 424 212 0 185 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 432 198 0 185 2 0 2 2 0 8 0 filepl 120 979 0 925 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 144 185 0 185 2 1 1 1 0 8 1 processpl 928 212 0 185 4 0 4 4 0 8 0 procpl 624 219 0 185 3 0 3 3 0 8 0 sockpl 400 71 0 54 2 0 2 2 0 8 0 mcl4k 4096 10 0 10 2 1 1 1 0 8 1 mcl2k 2048 5564 0 5527 8 3 5 8 0 8 0 mtagpl 96 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9675 0 9594 9 3 6 6 0 8 0 mbufpl: pool(0xffffffff82862e28:mbufpl): free list modified: page 0xfffffd805ac78000; item ordinal 6; addr 0xfffffd805ac78700 (p 0xfffffd805e101000); offset 0x0=0x0 pool(mbufpl): free list modified: page 0xfffffd805ac78000; item ordinal 6; addr 0xfffffd805ac78700 (p 0xfffffd805e101000); offset 0x0=0x0 mbufpl: pool(0xffffffff82862e28:mbufpl): page inconsistency: page 0xfffffd805ac78000; item ordinal 7; addr 0x7bdea5d635875eb2 bufpl 280 2961 0 125 203 0 203 203 0 8 0 anonpl 16 20566 0 19054 14 2 12 12 0 107 4 amapchunkpl 152 810 0 749 4 0 4 4 0 158 1 amappl16 192 124 0 96 2 0 2 2 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 30 0 26 1 0 1 1 0 8 0 amappl13 168 20 0 18 2 1 1 1 0 8 0 amappl12 160 9 0 5 2 1 1 1 0 8 0 amappl11 152 49 0 38 1 0 1 1 0 8 0 amappl10 144 14 0 10 1 0 1 1 0 8 0 amappl9 136 192 0 189 1 0 1 1 0 8 0 amappl8 128 243 0 235 1 0 1 1 0 8 0 amappl7 120 104 0 93 1 0 1 1 0 8 0 amappl6 112 25 0 22 2 1 1 1 0 8 0 amappl5 104 207 0 197 1 0 1 1 0 8 0 amappl4 96 428 0 403 1 0 1 1 0 8 0 amappl3 88 106 0 100 1 0 1 1 0 8 0 amappl2 80 807 0 753 3 1 2 2 0 8 0 amappl1 72 13836 0 13435 23 6 17 17 0 8 7 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 198 0 185 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 198 0 185 1 0 1 1 0 8 0 vmmpekpl 168 6070 0 6049 2 0 2 2 0 8 0 vmmpepl 168 29483 0 28596 83 14 69 69 0 357 29 vmsppl 272 197 0 185 1 0 1 1 0 8 0 pdppl 4096 402 0 370 5 0 5 5 0 8 0 pvpl 32 105252 0 101451 108 6 102 102 0 265 69 pmappl 200 197 0 185 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 220 0 11 6 0 6 6 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace pool_do_put(ffffffff82862e28,fffffd805ac78600) at pool_do_put+0x12e sys/kern/subr_pool.c:836 pool_put(ffffffff82862e28,fffffd805ac78600) at pool_put+0x4b sys/kern/subr_pool.c:794 m_free(fffffd805ac78600) at m_free+0x119 sys/kern/uipc_mbuf.c:459 rt_ifa_del(ffff8000006b5400,800100,ffff8000006b5440,0) at rt_ifa_del+0x402 sys/net/route.c:1197 in6_unlink_ifa(ffff8000006b5400,ffff800000ac6800) at in6_unlink_ifa+0x571 sys/netinet6/in6.c:943 in6_update_ifa(ffff800000ac6800,ffff80001d775500,0) at in6_update_ifa+0x13e7 sys/netinet6/in6.c:875 in6_ioctl_change_ifaddr(8080691a,ffff80001d775500,ffff800000ac6800) at in6_ioctl_change_ifaddr+0x40c sys/netinet6/in6.c:352 ifioctl(fffffd805da67c88,8080691a,ffff80001d775500,ffff80001d6a99c8) at ifioctl+0xe60 sys/net/if.c:2180 sys_ioctl(ffff80001d6a99c8,ffff80001d775618,ffff80001d775660) at sys_ioctl+0x4a1 syscall(ffff80001d7756e0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbeb40, count: -11 ddb> machine ddbcpu 1 No such command ddb> trace pool_do_put(ffffffff82862e28,fffffd805ac78600) at pool_do_put+0x12e sys/kern/subr_pool.c:836 pool_put(ffffffff82862e28,fffffd805ac78600) at pool_put+0x4b sys/kern/subr_pool.c:794 m_free(fffffd805ac78600) at m_free+0x119 sys/kern/uipc_mbuf.c:459 rt_ifa_del(ffff8000006b5400,800100,ffff8000006b5440,0) at rt_ifa_del+0x402 sys/net/route.c:1197 in6_unlink_ifa(ffff8000006b5400,ffff800000ac6800) at in6_unlink_ifa+0x571 sys/netinet6/in6.c:943 in6_update_ifa(ffff800000ac6800,ffff80001d775500,0) at in6_update_ifa+0x13e7 sys/netinet6/in6.c:875 in6_ioctl_change_ifaddr(8080691a,ffff80001d775500,ffff800000ac6800) at in6_ioctl_change_ifaddr+0x40c sys/netinet6/in6.c:352 ifioctl(fffffd805da67c88,8080691a,ffff80001d775500,ffff80001d6a99c8) at ifioctl+0xe60 sys/net/if.c:2180 sys_ioctl(ffff80001d6a99c8,ffff80001d775618,ffff80001d775660) at sys_ioctl+0x4a1 syscall(ffff80001d7756e0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbeb40, count: -11 ddb>