uvm_fault(0xfffffd805f7dbee0, 0x7b7e0, 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(0xfffffd805f7dbee0, 0x7b7e0, 0, 1) -> e pool_do_put(ffffffff825ab430,fffffd8062682200) at pool_do_put+0x12e sys/kern/subr_pool.c:836 end trace frame: 0xffff80001e850750, count: 0 ddb> trace pool_do_put(ffffffff825ab430,fffffd8062682200) at pool_do_put+0x12e sys/kern/subr_pool.c:836 pool_put(ffffffff825ab430,fffffd8062682200) at pool_put+0x4b sys/kern/subr_pool.c:794 m_free(fffffd8062682200) at m_free+0x119 sys/kern/uipc_mbuf.c:459 rt_ifa_del(ffff800000a24200,800100,ffff800000a24240,0) at rt_ifa_del+0x402 sys/net/route.c:1197 in6_unlink_ifa(ffff800000a24200,ffff8000009f8800) at in6_unlink_ifa+0x571 sys/netinet6/in6.c:943 in6_update_ifa(ffff8000009f8800,ffff80001e850cb0,0) at in6_update_ifa+0x13f7 sys/netinet6/in6.c:875 in6_ioctl_change_ifaddr(8080691a,ffff80001e850cb0,ffff8000009f8800) at in6_ioctl_change_ifaddr+0x40c sys/netinet6/in6.c:352 ifioctl(fffffd805dac1e18,8080691a,ffff80001e850cb0,ffff80001d7523a0) at ifioctl+0xe60 sys/net/if.c:2289 sys_ioctl(ffff80001d7523a0,ffff80001e850dc8,ffff80001e850e10) at sys_ioctl+0x4a1 syscall(ffff80001e850e90) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x93e1faecd0, count: -11 ddb> show registers rdi 0xffffffff816229a5 pool_do_put+0x125 rsi 0x17a rbp 0xffff80001e850700 rbx 0x7b7d8 acpi_pdirpa+0x67640 rdx 0x17b rcx 0xffff80001d833000 rax 0xffff80001d833000 r8 0x4 r9 0x5 r10 0x6687a78bdbbf4f42 r11 0x40135dcae64fc642 r12 0xfffffd8062682200 r13 0x45fb4305f307b7d8 r14 0xffffffff825ab430 mbpool r15 0xfffffd805e137bd8 rip 0xffffffff816229ae pool_do_put+0x12e cs 0x8 rflags 0x10296 __ALIGN_SIZE+0xf296 rsp 0xffff80001e850650 ss 0x10 pool_do_put+0x12e: movq 0x8(%rbx),%rbx ddb> show proc PROC (syz-executor.0) pid=117304 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d752610,0xffffffff8258af98 process=0xffff8000ffffa740 user=0xffff80001e84b000, vmspace=0xfffffd805f7dbee0 estcpu=2, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 51033 369674 95217 0 2 0 syz-executor.0 *51033 117304 95217 0 7 0x4000000 syz-executor.0 26770 75736 0 0 3 0x14200 acct acct 63071 316981 0 0 3 0x14200 bored sosplice 98451 504916 94418 0 3 0x82 nanosleep syz-executor.1 95217 420936 94418 0 3 0x82 nanosleep syz-executor.0 94418 306753 73175 0 3 0x82 thrsleep syz-fuzzer 94418 449907 73175 0 3 0x4000082 nanosleep syz-fuzzer 94418 366145 73175 0 3 0x4000082 kqread syz-fuzzer 94418 343487 73175 0 3 0x4000082 thrsleep syz-fuzzer 94418 177455 73175 0 3 0x4000082 thrsleep syz-fuzzer 94418 203320 73175 0 3 0x4000082 thrsleep syz-fuzzer 94418 308360 73175 0 3 0x4000082 thrsleep syz-fuzzer 94418 370593 73175 0 3 0x4000082 thrsleep syz-fuzzer 73175 333041 62286 0 3 0x10008a pause ksh 62286 469253 159 0 3 0x92 select sshd 57817 506940 1 0 3 0x100083 ttyin getty 159 403159 1 0 3 0x80 select sshd 17687 392802 72945 73 3 0x100090 kqread syslogd 72945 388216 1 0 3 0x100082 netio syslogd 63022 229827 1 77 3 0x100090 poll dhclient 92198 487968 1 0 3 0x80 poll dhclient 85092 82770 0 0 3 0x14200 bored smr 6912 310942 0 0 2 0x14200 zerothread 82776 139145 0 0 3 0x14200 aiodoned aiodoned 71136 456400 0 0 3 0x14200 syncer update 82942 153956 0 0 3 0x14200 cleaner cleaner 38319 147958 0 0 3 0x14200 reaper reaper 20657 511728 0 0 3 0x14200 pgdaemon pagedaemon 32877 467650 0 0 3 0x14200 bored crynlk 44762 227497 0 0 3 0x14200 bored crypto 41194 438103 0 0 3 0x40014200 acpi0 acpi0 37770 82074 0 0 3 0x14200 bored softnet 45107 512948 0 0 3 0x14200 bored systqmp 33840 117196 0 0 3 0x14200 bored systq 11651 162059 0 0 3 0x40014200 bored softclock 46411 69195 0 0 3 0x40014200 idle0 1 10484 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 9513 6357K 6615K 78643K 11069 0 pcb 13 8K 8K 78643K 125 0 rtable 95 3K 4K 78643K 317 0 ifaddr 82 16K 16K 78643K 136 0 counters 21 16K 16K 78643K 29 0 ioctlops 0 0K 2K 78643K 43 0 iov 0 0K 16K 78643K 79 0 mount 1 1K 1K 78643K 1 0 vnodes 1215 76K 77K 78643K 1383 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 1K 78643K 45 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 427 0 sigio 0 0K 0K 78643K 6 0 proc 50 38K 63K 78643K 409 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 222 0 in_multi 62 3K 3K 78643K 252 0 ether_multi 1 0K 0K 78643K 24 0 mrt 1 0K 0K 78643K 2 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 79 360K 360K 78643K 79 0 exec 0 0K 1K 78643K 206 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 135 72K 88K 78643K 1868 0 UVM aobj 19 2K 2K 78643K 24 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 82 0 NDP 13 0K 0K 78643K 29 0 temp 103 3034K 3102K 78643K 18165 0 kqueue 3 4K 24K 78643K 191 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 2 1 0 1 1 0 8 0 rtpcb 80 53 0 51 1 0 1 1 0 8 0 rtentry 112 65 0 29 2 0 2 2 0 8 0 unpcb 120 287 0 279 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 47 0 47 1 1 0 1 0 8 0 tcpcb 544 173 0 169 1 0 1 1 0 8 0 inpcb 280 648 0 640 5 4 1 2 0 8 0 nd6 48 13 0 10 1 0 1 1 0 8 0 ppxss 1128 2 0 2 2 2 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 327 0 136 16 3 13 14 0 8 0 art_table 32 329 0 136 2 0 2 2 0 8 0 art_node 16 64 0 30 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 4 1 0 1 1 0 8 0 semupl 112 4 0 4 2 2 0 1 0 8 0 semapl 112 37 0 27 1 0 1 1 0 8 0 shmpl 112 22 0 6 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2049 0 652 88 0 88 88 0 8 0 ffsino 240 2049 0 652 83 0 83 83 0 8 0 nchpl 144 2840 0 1240 60 0 60 60 0 8 0 uvmvnodes 72 2181 0 0 40 0 40 40 0 8 0 vnodes 208 2181 0 0 115 0 115 115 0 8 0 namei 1024 8648 0 8648 5 4 1 1 0 8 1 vcpupl 1984 5 0 0 1 0 1 1 0 8 0 vmpool 528 10 0 5 1 0 1 1 0 8 0 scxspl 192 8560 0 8560 2 1 1 1 0 8 1 plimitpl 152 52 0 45 1 0 1 1 0 8 0 sigapl 424 615 0 585 4 0 4 4 0 8 0 futexpl 56 9054 0 9054 5 4 1 1 0 8 1 knotepl 112 323 0 304 2 1 1 2 0 8 0 kqueuepl 144 420 0 412 1 0 1 1 0 8 0 pipelkpl 16 129 0 119 1 0 1 1 0 8 0 pipepl 120 258 0 239 1 0 1 1 0 8 0 fdescpl 432 599 0 585 2 0 2 2 0 8 0 filepl 120 4654 0 4558 4 0 4 4 0 8 1 lockfpl 104 109 0 108 1 0 1 1 0 8 0 lockfspl 48 41 0 40 1 0 1 1 0 8 0 sessionpl 112 17 0 7 1 0 1 1 0 8 0 pgrppl 48 27 0 17 1 0 1 1 0 8 0 ucredpl 96 1158 0 1151 1 0 1 1 0 8 0 zombiepl 144 585 0 584 1 0 1 1 0 8 0 processpl 920 615 0 584 4 0 4 4 0 8 0 procpl 624 1117 0 1078 5 1 4 4 0 8 0 sosppl 128 5 0 5 3 3 0 1 0 8 0 sockpl 400 988 0 970 8 5 3 4 0 8 1 mcl64k 65536 44 0 44 3 3 0 1 0 8 0 mcl12k 12288 14 0 14 4 4 0 1 0 8 0 mcl9k 9216 8 0 8 3 3 0 1 0 8 0 mcl8k 8192 9 0 9 5 5 0 1 0 8 0 mcl4k 4096 28 0 28 4 4 0 1 0 8 0 mcl2k2 2112 4 0 4 3 3 0 1 0 8 0 mcl2k 2048 66066 0 66020 17 10 7 15 0 8 0 mtagpl 80 43 0 13 2 1 1 1 0 8 0 mbufpl 256 107580 0 107424 17 4 13 15 0 8 0 mbufpl: pool(0xffffffff825ab430:mbufpl): free list modified: page 0xfffffd8062682000; item ordinal 3; addr 0xfffffd8062682300 (p 0xfffffd805e137000); offset 0x0=0x0 mbufpl: pool(0xffffffff825ab430:mbufpl): page inconsistency: page 0xfffffd8062682000; item ordinal 4; addr 0x7b7d8 bufpl 280 4577 0 126 318 0 318 318 0 8 0 anonpl 16 77026 0 62332 83 20 63 74 0 107 0 amapchunkpl 152 3141 0 3007 29 21 8 19 0 158 1 amappl16 192 3449 0 2595 61 18 43 51 0 8 0 amappl15 184 202 0 199 1 0 1 1 0 8 0 amappl14 176 26 0 20 1 0 1 1 0 8 0 amappl13 168 24 0 23 1 0 1 1 0 8 0 amappl12 160 15 0 12 2 1 1 1 0 8 0 amappl11 152 242 0 232 1 0 1 1 0 8 0 amappl10 144 20 0 13 1 0 1 1 0 8 0 amappl9 136 344 0 342 1 0 1 1 0 8 0 amappl8 128 345 0 299 2 0 2 2 0 8 0 amappl7 120 108 0 94 1 0 1 1 0 8 0 amappl6 112 218 0 212 1 0 1 1 0 8 0 amappl5 104 600 0 589 1 0 1 1 0 8 0 amappl4 96 425 0 397 1 0 1 1 0 8 0 amappl3 88 118 0 112 1 0 1 1 0 8 0 amappl2 80 4171 0 4107 2 0 2 2 0 8 0 amappl1 72 19829 0 19425 23 14 9 17 0 8 0 amappl 80 1352 0 1309 2 0 2 2 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 23 0 5 1 0 1 1 0 8 0 uaddrrnd 24 609 0 590 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 609 0 590 1 0 1 1 0 8 0 vmmpekpl 168 7502 0 7469 2 0 2 2 0 8 0 vmmpepl 168 77338 0 75392 119 29 90 99 0 357 5 vmsppl 272 608 0 590 4 2 2 2 0 8 0 pdppl 4096 1224 0 1185 7 1 6 6 0 8 0 pvpl 32 221651 0 204072 193 43 150 180 0 265 0 pmappl 200 608 0 590 4 2 2 2 0 8 1 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 270 0 44 7 0 7 7 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace pool_do_put(ffffffff825ab430,fffffd8062682200) at pool_do_put+0x12e sys/kern/subr_pool.c:836 pool_put(ffffffff825ab430,fffffd8062682200) at pool_put+0x4b sys/kern/subr_pool.c:794 m_free(fffffd8062682200) at m_free+0x119 sys/kern/uipc_mbuf.c:459 rt_ifa_del(ffff800000a24200,800100,ffff800000a24240,0) at rt_ifa_del+0x402 sys/net/route.c:1197 in6_unlink_ifa(ffff800000a24200,ffff8000009f8800) at in6_unlink_ifa+0x571 sys/netinet6/in6.c:943 in6_update_ifa(ffff8000009f8800,ffff80001e850cb0,0) at in6_update_ifa+0x13f7 sys/netinet6/in6.c:875 in6_ioctl_change_ifaddr(8080691a,ffff80001e850cb0,ffff8000009f8800) at in6_ioctl_change_ifaddr+0x40c sys/netinet6/in6.c:352 ifioctl(fffffd805dac1e18,8080691a,ffff80001e850cb0,ffff80001d7523a0) at ifioctl+0xe60 sys/net/if.c:2289 sys_ioctl(ffff80001d7523a0,ffff80001e850dc8,ffff80001e850e10) at sys_ioctl+0x4a1 syscall(ffff80001e850e90) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x93e1faecd0, count: -11 ddb> machine ddbcpu 1 No such command ddb> trace pool_do_put(ffffffff825ab430,fffffd8062682200) at pool_do_put+0x12e sys/kern/subr_pool.c:836 pool_put(ffffffff825ab430,fffffd8062682200) at pool_put+0x4b sys/kern/subr_pool.c:794 m_free(fffffd8062682200) at m_free+0x119 sys/kern/uipc_mbuf.c:459 rt_ifa_del(ffff800000a24200,800100,ffff800000a24240,0) at rt_ifa_del+0x402 sys/net/route.c:1197 in6_unlink_ifa(ffff800000a24200,ffff8000009f8800) at in6_unlink_ifa+0x571 sys/netinet6/in6.c:943 in6_update_ifa(ffff8000009f8800,ffff80001e850cb0,0) at in6_update_ifa+0x13f7 sys/netinet6/in6.c:875 in6_ioctl_change_ifaddr(8080691a,ffff80001e850cb0,ffff8000009f8800) at in6_ioctl_change_ifaddr+0x40c sys/netinet6/in6.c:352 ifioctl(fffffd805dac1e18,8080691a,ffff80001e850cb0,ffff80001d7523a0) at ifioctl+0xe60 sys/net/if.c:2289 sys_ioctl(ffff80001d7523a0,ffff80001e850dc8,ffff80001e850e10) at sys_ioctl+0x4a1 syscall(ffff80001e850e90) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x93e1faecd0, count: -11