uvm_fault(0xfffffd806bc0a110, 0xea8f13, 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(0xfffffd806bc0a110, 0xea8f13, 0, 1) -> e pool_do_put(ffffffff825bec40,fffffd805b9fbc00) at pool_do_put+0x12e sys/kern/subr_pool.c:836 end trace frame: 0xffff80001d7f1f90, count: 0 ddb> trace pool_do_put(ffffffff825bec40,fffffd805b9fbc00) at pool_do_put+0x12e sys/kern/subr_pool.c:836 pool_put(ffffffff825bec40,fffffd805b9fbc00) at pool_put+0x4b sys/kern/subr_pool.c:794 m_free(fffffd805b9fbc00) at m_free+0x119 sys/kern/uipc_mbuf.c:459 rt_ifa_del(ffff800000a43500,800100,ffff800000a43540,0) at rt_ifa_del+0x402 sys/net/route.c:1197 in6_unlink_ifa(ffff800000a43500,ffff8000009f7800) at in6_unlink_ifa+0x571 sys/netinet6/in6.c:943 in6_update_ifa(ffff8000009f7800,ffff80001d7f24f0,0) at in6_update_ifa+0x13f7 sys/netinet6/in6.c:875 in6_ioctl_change_ifaddr(8080691a,ffff80001d7f24f0,ffff8000009f7800) at in6_ioctl_change_ifaddr+0x40c sys/netinet6/in6.c:352 ifioctl(fffffd80581ca330,8080691a,ffff80001d7f24f0,ffff80001d797eb0) at ifioctl+0xe60 sys/net/if.c:2288 sys_ioctl(ffff80001d797eb0,ffff80001d7f2608,ffff80001d7f2650) at sys_ioctl+0x4a1 syscall(ffff80001d7f26d0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbb0ef113ed0, count: -11 ddb> show registers rdi 0xffffffff81a66665 pool_do_put+0x125 rsi 0x13c rbp 0xffff80001d7f1f40 rbx 0xea8f0b acpi_pdirpa+0xe94d73 rdx 0x13d rcx 0xffff80001f221000 rax 0xffff80001f221000 r8 0x4 r9 0x5 r10 0xd668de51428193c9 r11 0x6da2b1bb2a0953e9 r12 0xfffffd805b9fbc00 r13 0x5525185f04ea8f0b r14 0xffffffff825bec40 mbpool r15 0xfffffd80650fef08 rip 0xffffffff81a6666e pool_do_put+0x12e cs 0x8 rflags 0x10296 __ALIGN_SIZE+0xf296 rsp 0xffff80001d7f1e90 ss 0x10 pool_do_put+0x12e: movq 0x8(%rbx),%rbx ddb> show proc PROC (syz-executor.0) pid=92395 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff80001d798ae0,0xffffffff825bfee0 process=0xffff8000ffffb938 user=0xffff80001d7ed000, vmspace=0xfffffd806bc0a110 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 89155 174967 15314 0 2 0 syz-executor.0 *89155 92395 15314 0 7 0x4000000 syz-executor.0 24773 56246 0 0 3 0x14200 bored sosplice 15314 243296 51573 0 3 0x82 nanosleep syz-executor.0 57954 410396 51573 0 3 0x2 biowait syz-executor.1 51573 152196 17958 0 3 0x82 thrsleep syz-fuzzer 51573 445635 17958 0 3 0x4000082 nanosleep syz-fuzzer 51573 506303 17958 0 3 0x4000082 kqread syz-fuzzer 51573 448467 17958 0 3 0x4000082 thrsleep syz-fuzzer 51573 517454 17958 0 3 0x4000082 thrsleep syz-fuzzer 51573 106774 17958 0 3 0x4000082 thrsleep syz-fuzzer 51573 249244 17958 0 3 0x4000082 thrsleep syz-fuzzer 17958 160535 60641 0 3 0x10008a pause ksh 60641 340832 68617 0 3 0x92 select sshd 13207 72994 1 0 3 0x100083 ttyin getty 68617 65747 1 0 3 0x80 select sshd 80081 112270 51478 73 3 0x100090 kqread syslogd 51478 349536 1 0 3 0x100082 netio syslogd 68173 269134 1 77 3 0x100090 poll dhclient 27210 134193 1 0 3 0x80 poll dhclient 3644 52681 0 0 3 0x14200 bored smr 15961 422987 0 0 2 0x14200 zerothread 68784 468400 0 0 3 0x14200 aiodoned aiodoned 2431 451072 0 0 3 0x14200 syncer update 21100 83837 0 0 3 0x14200 cleaner cleaner 12883 325689 0 0 3 0x14200 reaper reaper 56755 483460 0 0 3 0x14200 pgdaemon pagedaemon 78855 393487 0 0 3 0x14200 bored crynlk 99095 306459 0 0 3 0x14200 bored crypto 21061 193869 0 0 3 0x40014200 acpi0 acpi0 85362 41862 0 0 3 0x14200 bored softnet 88497 295496 0 0 3 0x14200 bored systqmp 17728 451019 0 0 3 0x14200 bored systq 71076 517843 0 0 3 0x40014200 bored softclock 13522 440321 0 0 3 0x40014200 idle0 1 1726 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 9520 6788K 7187K 78643K 11206 0 pcb 13 8K 8K 78643K 33 0 rtable 123 7K 7K 78643K 274 0 ifaddr 65 14K 14K 78643K 84 0 counters 21 16K 16K 78643K 21 0 ioctlops 0 0K 4K 78643K 25 0 iov 0 0K 12K 78643K 40 0 mount 1 1K 1K 78643K 1 0 vnodes 1230 77K 77K 78643K 1373 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 9 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 24 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 154 0 sigio 0 0K 0K 78643K 2 0 proc 49 38K 54K 78643K 371 0 subproc 32 2K 2K 78643K 34 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 7 0 in_multi 40 2K 2K 78643K 42 0 ether_multi 1 0K 0K 78643K 2 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 43 201K 201K 78643K 43 0 exec 0 0K 1K 78643K 189 0 pfkey data 0 0K 1K 78643K 2 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 120 38K 39K 78643K 1206 0 UVM aobj 17 2K 3K 78643K 20 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 20 0 NDP 9 0K 0K 78643K 13 0 temp 81 3034K 3098K 78643K 2215 0 kqueue 3 4K 9K 78643K 14 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 61 0 59 1 0 1 1 0 8 0 rtentry 112 45 0 1 2 0 2 2 0 8 0 unpcb 120 135 0 126 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 33 0 33 1 1 0 1 0 8 0 tcpcb 544 40 0 36 1 0 1 1 0 8 0 inpcb 280 113 0 105 1 0 1 1 0 8 0 nd6 48 6 0 0 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 0 1 1 0 8 1 pfrktable 1344 31 0 24 1 0 1 1 0 8 0 pftag 88 6 0 4 1 0 1 1 0 8 0 pfrule 1360 8 0 2 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 189 0 0 12 0 12 12 0 8 0 art_table 32 190 0 0 2 0 2 2 0 8 0 art_node 16 44 0 4 1 0 1 1 0 8 0 semapl 112 20 0 10 1 0 1 1 0 8 0 shmpl 112 18 0 4 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1604 0 209 88 0 88 88 0 8 0 ffsino 240 1604 0 209 83 0 83 83 0 8 0 nchpl 144 1990 0 388 60 0 60 60 0 8 0 uvmvnodes 72 1785 0 0 33 0 33 33 0 8 0 vnodes 208 1785 0 0 94 0 94 94 0 8 0 namei 1024 5203 0 5203 1 0 1 1 0 8 1 vcpupl 1984 1 0 0 1 0 1 1 0 8 0 vmpool 528 2 0 1 1 0 1 1 0 8 0 pfiaddrpl 120 12 0 6 1 0 1 1 0 8 0 scxspl 192 4975 0 4974 1 0 1 1 0 8 0 plimitpl 152 40 0 33 1 0 1 1 0 8 0 sigapl 424 341 0 312 4 0 4 4 0 8 0 futexpl 56 2744 0 2744 1 0 1 1 0 8 1 knotepl 112 81 0 62 1 0 1 1 0 8 0 kqueuepl 144 32 0 30 1 0 1 1 0 8 0 pipelkpl 16 94 0 84 1 0 1 1 0 8 0 pipepl 120 188 0 169 1 0 1 1 0 8 0 fdescpl 432 326 0 312 2 0 2 2 0 8 0 filepl 120 1911 0 1815 4 0 4 4 0 8 1 lockfpl 104 25 0 24 1 0 1 1 0 8 0 lockfspl 48 12 0 11 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 96 133 0 126 1 0 1 1 0 8 0 zombiepl 144 312 0 312 1 0 1 1 0 8 1 processpl 920 341 0 312 4 0 4 4 0 8 0 procpl 624 494 0 458 4 0 4 4 0 8 1 sosppl 128 2 0 2 1 0 1 1 0 8 1 sockpl 400 311 0 292 4 0 4 4 0 8 1 mcl64k 65536 11 0 11 1 0 1 1 0 8 1 mcl16k 16384 2 0 2 1 0 1 1 0 8 1 mcl12k 12288 2 0 2 1 0 1 1 0 8 1 mcl9k 9216 3 0 3 1 0 1 1 0 8 1 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 28 0 28 1 0 1 1 0 8 1 mcl2k 2048 73428 0 73382 14 2 12 12 0 8 5 mtagpl 80 13 0 2 2 1 1 1 0 8 0 mbufpl 256 116831 0 116737 11 2 9 9 0 8 2 mbufpl: pool(0xffffffff825bec40:mbufpl): free list modified: page 0xfffffd805b9fb000; item ordinal 0; addr 0xfffffd805b9fbd00 (p 0xfffffd80650fe000); offset 0x0=0x0 mbufpl: pool(0xffffffff825bec40:mbufpl): page inconsistency: page 0xfffffd805b9fb000; item ordinal 1; addr 0xea8f0b bufpl 280 3364 0 126 232 0 232 232 0 8 0 anonpl 16 45068 0 29528 65 2 63 63 0 107 0 amapchunkpl 152 1422 0 1291 8 0 8 8 0 158 1 amappl16 192 1516 0 671 43 0 43 43 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 93 0 85 1 0 1 1 0 8 0 amappl13 168 26 0 23 1 0 1 1 0 8 0 amappl12 160 85 0 82 1 0 1 1 0 8 0 amappl11 152 105 0 93 1 0 1 1 0 8 0 amappl10 144 13 0 8 1 0 1 1 0 8 0 amappl9 136 342 0 340 1 0 1 1 0 8 0 amappl8 128 338 0 294 2 0 2 2 0 8 0 amappl7 120 109 0 97 1 0 1 1 0 8 0 amappl6 112 81 0 75 1 0 1 1 0 8 0 amappl5 104 328 0 316 1 0 1 1 0 8 0 amappl4 96 421 0 397 1 0 1 1 0 8 0 amappl3 88 105 0 99 1 0 1 1 0 8 0 amappl2 80 1825 0 1761 2 0 2 2 0 8 0 amappl1 72 15678 0 15269 23 11 12 17 0 8 2 amappl 80 722 0 680 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 19 0 3 1 0 1 1 0 8 0 uaddrrnd 24 328 0 313 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 328 0 313 1 0 1 1 0 8 0 vmmpekpl 168 6243 0 6217 2 0 2 2 0 8 0 vmmpepl 168 45730 0 43810 146 7 139 139 0 357 55 vmsppl 272 327 0 313 2 0 2 2 0 8 1 pdppl 4096 662 0 627 6 0 6 6 0 8 1 pvpl 32 150066 0 131557 153 0 153 153 0 265 3 pmappl 200 327 0 313 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 237 0 6 7 0 7 7 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace pool_do_put(ffffffff825bec40,fffffd805b9fbc00) at pool_do_put+0x12e sys/kern/subr_pool.c:836 pool_put(ffffffff825bec40,fffffd805b9fbc00) at pool_put+0x4b sys/kern/subr_pool.c:794 m_free(fffffd805b9fbc00) at m_free+0x119 sys/kern/uipc_mbuf.c:459 rt_ifa_del(ffff800000a43500,800100,ffff800000a43540,0) at rt_ifa_del+0x402 sys/net/route.c:1197 in6_unlink_ifa(ffff800000a43500,ffff8000009f7800) at in6_unlink_ifa+0x571 sys/netinet6/in6.c:943 in6_update_ifa(ffff8000009f7800,ffff80001d7f24f0,0) at in6_update_ifa+0x13f7 sys/netinet6/in6.c:875 in6_ioctl_change_ifaddr(8080691a,ffff80001d7f24f0,ffff8000009f7800) at in6_ioctl_change_ifaddr+0x40c sys/netinet6/in6.c:352 ifioctl(fffffd80581ca330,8080691a,ffff80001d7f24f0,ffff80001d797eb0) at ifioctl+0xe60 sys/net/if.c:2288 sys_ioctl(ffff80001d797eb0,ffff80001d7f2608,ffff80001d7f2650) at sys_ioctl+0x4a1 syscall(ffff80001d7f26d0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbb0ef113ed0, count: -11 ddb> machine ddbcpu 1 No such command ddb> trace pool_do_put(ffffffff825bec40,fffffd805b9fbc00) at pool_do_put+0x12e sys/kern/subr_pool.c:836 pool_put(ffffffff825bec40,fffffd805b9fbc00) at pool_put+0x4b sys/kern/subr_pool.c:794 m_free(fffffd805b9fbc00) at m_free+0x119 sys/kern/uipc_mbuf.c:459 rt_ifa_del(ffff800000a43500,800100,ffff800000a43540,0) at rt_ifa_del+0x402 sys/net/route.c:1197 in6_unlink_ifa(ffff800000a43500,ffff8000009f7800) at in6_unlink_ifa+0x571 sys/netinet6/in6.c:943 in6_update_ifa(ffff8000009f7800,ffff80001d7f24f0,0) at in6_update_ifa+0x13f7 sys/netinet6/in6.c:875 in6_ioctl_change_ifaddr(8080691a,ffff80001d7f24f0,ffff8000009f7800) at in6_ioctl_change_ifaddr+0x40c sys/netinet6/in6.c:352 ifioctl(fffffd80581ca330,8080691a,ffff80001d7f24f0,ffff80001d797eb0) at ifioctl+0xe60 sys/net/if.c:2288 sys_ioctl(ffff80001d797eb0,ffff80001d7f2608,ffff80001d7f2650) at sys_ioctl+0x4a1 syscall(ffff80001d7f26d0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbb0ef113ed0, count: -11