uvm_fault(0xfffffd806bc0a000, 0x10000000b, 0, 1) -> e kernel: page fault trap, code=0 Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic kernel page fault uvm_fault(0xfffffd806bc0a000, 0x10000000b, 0, 1) -> e in_delmulti(ffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff80001e7c72c0, count: 0 ddb> trace in_delmulti(ffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000af9900) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac7800) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac7800) at if_detach+0x140 sys/net/if.c:1032 tun_clone_destroy(ffff800000ac7800) at tun_clone_destroy+0x1c7 sys/net/if_tun.c:326 ifioctl(fffffd8057666020,80206979,ffff80001e7c7490,ffff80001d6be298) at ifioctl+0x3de sys/net/if.c:1821 sys_ioctl(ffff80001d6be298,ffff80001e7c75a8,ffff80001e7c75f0) at sys_ioctl+0x4a1 syscall(ffff80001e7c7670) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x113954a7cf0, count: -9 ddb> show registers rdi 0xffff80001d7a6000 rsi 0x12ee9 __ALIGN_SIZE+0x11ee9 rbp 0xffff80001e7c7270 rbx 0 rdx 0xffff80001d7a6000 rcx 0x12ee8 __ALIGN_SIZE+0x11ee8 rax 0xffffffff817ba21d in_delmulti+0x8d r8 0xffff800000af9900 r9 0xffffffff81256843 rt_ifa_purge+0x153 r10 0x5 r11 0xabb584a7b1729ec6 r12 0 r13 0x3 r14 0xffffffff r15 0x1 rip 0xffffffff817ba21d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001e7c7210 ss 0 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> show proc PROC (syz-executor.1) pid=122542 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=53, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6bf8d0,0xffffffff8280e530 process=0xffff80001d7059e8 user=0xffff80001e7c2000, vmspace=0xfffffd806bc0a000 estcpu=31, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 13703 271892 88291 0 3 0x80 nanosleep syz-executor.1 *13703 122542 88291 0 7 0x4000000 syz-executor.1 43342 522918 0 0 3 0x14200 acct acct 5080 96580 0 0 3 0x14200 bored sosplice 51597 424018 39352 0 3 0x82 piperd syz-executor.0 88291 471983 39352 0 3 0x82 nanosleep syz-executor.1 39352 236846 94665 0 3 0x82 thrsleep syz-fuzzer 39352 352333 94665 0 3 0x4000082 nanosleep syz-fuzzer 39352 60188 94665 0 3 0x4000082 thrsleep syz-fuzzer 39352 393259 94665 0 3 0x4000082 thrsleep syz-fuzzer 39352 331789 94665 0 3 0x4000082 thrsleep syz-fuzzer 39352 480601 94665 0 2 0x4000002 syz-fuzzer 39352 291139 94665 0 2 0x4000002 syz-fuzzer 94665 512361 5981 0 3 0x10008a pause ksh 5981 81166 53566 0 3 0x92 select sshd 33117 462982 1 0 3 0x100083 ttyin getty 53566 143948 1 0 3 0x80 select sshd 49294 256321 70850 73 3 0x100090 kqread syslogd 70850 27019 1 0 3 0x100082 netio syslogd 5017 115197 1 77 3 0x100090 poll dhclient 72798 283901 1 0 3 0x80 poll dhclient 40974 51825 0 0 3 0x14200 bored smr 31594 185774 0 0 2 0x14200 zerothread 54197 96232 0 0 3 0x14200 aiodoned aiodoned 82241 98268 0 0 3 0x14200 syncer update 96178 420908 0 0 3 0x14200 cleaner cleaner 88461 2239 0 0 3 0x14200 reaper reaper 67595 386455 0 0 3 0x14200 pgdaemon pagedaemon 71673 274283 0 0 3 0x14200 bored crynlk 36047 116388 0 0 3 0x14200 bored crypto 82613 154703 0 0 3 0x40014200 acpi0 acpi0 4197 441439 0 0 3 0x14200 bored softnet 10524 307824 0 0 2 0x14200 systqmp 756 349351 0 0 3 0x14200 bored systq 44773 448083 0 0 3 0x40014200 bored softclock 23076 124124 0 0 3 0x40014200 idle0 1 208885 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 9463 6337K 6584K 78643K 10824 0 pcb 13 8K 8K 78643K 43 0 rtable 96 6K 7K 78643K 276 0 ifaddr 64 15K 16K 78643K 89 0 sysctl 2 0K 0K 78643K 2 0 counters 21 16K 16K 78643K 24 0 ioctlops 0 0K 4K 78643K 81 0 iov 0 0K 12K 78643K 22 0 mount 1 1K 1K 78643K 1 0 vnodes 1216 76K 77K 78643K 1321 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 10 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 60 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 321 0 sigio 0 0K 0K 78643K 6 0 proc 50 38K 63K 78643K 384 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 12 0 in_multi 66 3K 3K 78643K 96 0 ether_multi 1 0K 0K 78643K 7 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 193 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 150 41K 44K 78643K 1625 0 UVM aobj 25 3K 3K 78643K 35 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 29 0 NDP 7 0K 0K 78643K 17 0 temp 110 3865K 3929K 78643K 2529 0 kqueue 3 4K 12K 78643K 19 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 7 0 3 1 0 1 1 0 8 0 rtpcb 88 33 0 31 1 0 1 1 0 8 0 rtentry 112 59 0 28 2 0 2 2 0 8 0 unpcb 120 142 0 134 1 0 1 1 0 8 0 syncache 272 6 0 6 2 2 0 1 0 8 0 tcpqe 32 387 0 387 2 2 0 1 0 8 0 tcpcb 592 80 0 74 1 0 1 1 0 8 0 inpcb 296 679 0 667 5 3 2 2 0 8 1 nd6 48 12 0 6 1 0 1 1 0 8 0 pfrktable 1344 10 0 2 1 0 1 1 0 8 0 pftag 88 2 0 0 1 0 1 1 0 8 0 pfrule 1360 12 0 4 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 261 0 81 13 1 12 12 0 8 0 art_table 32 262 0 81 2 0 2 2 0 8 0 art_node 16 58 0 28 1 0 1 1 0 8 0 sysvmsgpl 40 22 0 16 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 58 0 48 1 0 1 1 0 8 0 shmpl 112 32 0 10 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1802 0 406 88 0 88 88 0 8 0 ffsino 240 1802 0 406 83 0 83 83 0 8 0 nchpl 144 2449 0 861 60 0 60 60 0 8 0 uvmvnodes 72 1906 0 0 35 0 35 35 0 8 0 vnodes 208 1906 0 0 101 0 101 101 0 8 0 namei 1024 6398 0 6398 5 4 1 1 0 8 1 vcpupl 1984 2 0 0 1 0 1 1 0 8 0 vmpool 528 5 0 3 3 2 1 1 0 8 0 pfiaddrpl 120 4 0 0 1 0 1 1 0 8 0 scxspl 200 7198 0 7198 1 0 1 1 0 8 1 plimitpl 152 26 0 19 1 0 1 1 0 8 0 sigapl 424 509 0 479 4 0 4 4 0 8 0 futexpl 56 6432 0 6432 4 3 1 1 0 8 1 knotepl 112 75 0 55 1 0 1 1 0 8 0 kqueuepl 152 38 0 36 1 0 1 1 0 8 0 pipepl 272 121 0 110 2 1 1 2 0 8 0 fdescpl 432 493 0 479 2 0 2 2 0 8 0 filepl 120 2963 0 2863 4 0 4 4 0 8 0 lockfpl 104 58 0 57 1 0 1 1 0 8 0 lockfspl 48 23 0 22 1 0 1 1 0 8 0 sessionpl 120 17 0 7 1 0 1 1 0 8 0 pgrppl 48 31 0 21 1 0 1 1 0 8 0 ucredpl 96 291 0 284 1 0 1 1 0 8 0 zombiepl 144 479 0 479 2 1 1 1 0 8 1 processpl 944 509 0 479 4 0 4 4 0 8 0 procpl 632 874 0 837 5 1 4 4 0 8 0 sosppl 144 4 0 4 1 1 0 1 0 8 0 sockpl 400 854 0 832 5 2 3 3 0 8 0 mcl64k 65536 14 0 14 5 5 0 1 0 8 0 mcl16k 16384 2 0 2 2 2 0 1 0 8 0 mcl12k 12288 6 0 6 2 2 0 1 0 8 0 mcl8k 8192 12 0 12 4 3 1 1 0 8 1 mcl4k 4096 28 0 28 7 7 0 1 0 8 0 mcl2k2 2112 2 0 2 2 2 0 1 0 8 0 mcl2k 2048 95603 0 95545 27 18 9 19 0 8 0 mtagpl 96 31 0 27 2 1 1 1 0 8 0 mbufpl 256 152922 0 152805 21 5 16 18 0 8 0 bufpl 280 3738 0 117 259 0 259 259 0 8 0 anonpl 16 65235 0 46642 90 15 75 89 0 107 0 amapchunkpl 152 2882 0 2688 36 28 8 22 0 158 0 amappl16 192 2477 0 1504 58 9 49 57 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 10 0 7 1 0 1 1 0 8 0 amappl13 168 26 0 23 1 0 1 1 0 8 0 amappl12 160 25 0 23 1 0 1 1 0 8 0 amappl11 152 44 0 35 1 0 1 1 0 8 0 amappl10 144 12 0 9 1 0 1 1 0 8 0 amappl9 136 620 0 617 1 0 1 1 0 8 0 amappl8 128 597 0 544 2 0 2 2 0 8 0 amappl7 120 112 0 100 1 0 1 1 0 8 0 amappl6 112 30 0 22 1 0 1 1 0 8 0 amappl5 104 418 0 407 1 0 1 1 0 8 0 amappl4 96 433 0 402 1 0 1 1 0 8 0 amappl3 88 125 0 117 1 0 1 1 0 8 0 amappl2 80 3106 0 3037 2 0 2 2 0 8 0 amappl1 72 20040 0 19620 21 12 9 17 0 8 0 amappl 80 1127 0 1073 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 34 0 10 1 0 1 1 0 8 0 uaddrrnd 24 498 0 482 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 498 0 482 1 0 1 1 0 8 0 vmmpekpl 168 6967 0 6942 2 0 2 2 0 8 0 vmmpepl 168 67049 0 64943 128 35 93 120 0 357 0 vmsppl 272 497 0 482 3 1 2 2 0 8 1 pdppl 4096 1002 0 966 6 1 5 6 0 8 0 pvpl 32 196385 0 174780 211 35 176 205 0 265 1 pmappl 200 497 0 482 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 280 0 54 7 0 7 7 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace in_delmulti(ffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000af9900) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac7800) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac7800) at if_detach+0x140 sys/net/if.c:1032 tun_clone_destroy(ffff800000ac7800) at tun_clone_destroy+0x1c7 sys/net/if_tun.c:326 ifioctl(fffffd8057666020,80206979,ffff80001e7c7490,ffff80001d6be298) at ifioctl+0x3de sys/net/if.c:1821 sys_ioctl(ffff80001d6be298,ffff80001e7c75a8,ffff80001e7c75f0) at sys_ioctl+0x4a1 syscall(ffff80001e7c7670) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x113954a7cf0, count: -9 ddb> machine ddbcpu 1 No such command ddb> trace in_delmulti(ffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000af9900) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac7800) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac7800) at if_detach+0x140 sys/net/if.c:1032 tun_clone_destroy(ffff800000ac7800) at tun_clone_destroy+0x1c7 sys/net/if_tun.c:326 ifioctl(fffffd8057666020,80206979,ffff80001e7c7490,ffff80001d6be298) at ifioctl+0x3de sys/net/if.c:1821 sys_ioctl(ffff80001d6be298,ffff80001e7c75a8,ffff80001e7c75f0) at sys_ioctl+0x4a1 syscall(ffff80001e7c7670) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x113954a7cf0, count: -9