uvm_fault(0xfffffd805c481118, 0xb, 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(0xfffffd805c481118, 0xb, 0, 1) -> e in_delmulti(ffffffffffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff80001d75b0a0, count: 0 ddb> trace in_delmulti(ffffffffffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000af8c00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac6000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac6000) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000ac6000) at tun_clone_destroy+0x1c7 sys/net/if_tun.c:326 ifioctl(fffffd805f748c80,80206979,ffff80001d75b270,ffff80001e7d6020) at ifioctl+0x3de sys/net/if.c:1828 sys_ioctl(ffff80001e7d6020,ffff80001d75b388,ffff80001d75b3d0) at sys_ioctl+0x4a1 syscall(ffff80001d75b450) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x67eedebb490, count: -9 ddb> show registers rdi 0xffffffff81e46f2d in_delmulti+0x8d rsi 0x14077 __ALIGN_SIZE+0x13077 rbp 0xffff80001d75b050 rbx 0 rdx 0x14078 __ALIGN_SIZE+0x13078 rcx 0xffff80001d7a0000 rax 0xffff80001d7a0000 r8 0xffffffff818ebc13 rt_ifa_purge+0x153 r9 0x5 r10 0x97616d3758ee4ebc r11 0xd3a2d62c3aa84eda r12 0 r13 0x3 r14 0xffffffffffffffff r15 0x1 rip 0xffffffff81e46f2d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001d75aff0 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> show proc PROC (syz-executor.1) pid=221633 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=81, nice=20 forw=0xffffffffffffffff, list=0xffff80001e7d69e0,0xffffffff827f1030 process=0xffff80001d6ee770 user=0xffff80001d756000, vmspace=0xfffffd805c481118 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 26257 262987 42640 0 3 0x80 nanosleep syz-executor.1 *26257 221633 42640 0 7 0x4000000 syz-executor.1 42640 375214 50852 0 3 0x82 nanosleep syz-executor.1 40425 48571 0 0 3 0x14280 nfsidl nfsio 68312 417786 0 0 3 0x14280 nfsidl nfsio 21598 23626 0 0 3 0x14280 nfsidl nfsio 51179 397667 0 0 3 0x14280 nfsidl nfsio 23637 400881 0 0 3 0x14280 nfsidl nfsio 73311 519011 0 0 3 0x14280 nfsidl nfsio 40897 52030 0 0 3 0x14280 nfsidl nfsio 25533 236823 0 0 3 0x14280 nfsidl nfsio 51526 503855 0 0 3 0x14280 nfsidl nfsio 15576 82832 0 0 3 0x14280 nfsidl nfsio 64191 249207 0 0 3 0x14280 nfsidl nfsio 20428 384569 0 0 3 0x14280 nfsidl nfsio 94317 384676 0 0 3 0x14280 nfsidl nfsio 60763 409610 0 0 3 0x14280 nfsidl nfsio 67554 354777 0 0 3 0x14280 nfsidl nfsio 25230 275079 0 0 3 0x14280 nfsidl nfsio 74689 276482 0 0 3 0x14280 nfsidl nfsio 62832 350014 0 0 3 0x14280 nfsidl nfsio 99379 315755 0 0 3 0x14280 nfsidl nfsio 55860 479715 0 0 3 0x14280 nfsidl nfsio 7693 147920 0 0 3 0x14200 bored sosplice 84775 395283 0 0 3 0x14200 acct acct 91674 30803 50852 0 3 0x82 piperd syz-executor.0 50852 317634 79547 0 3 0x82 thrsleep syz-fuzzer 50852 135433 79547 0 3 0x4000082 nanosleep syz-fuzzer 50852 441211 79547 0 3 0x4000082 thrsleep syz-fuzzer 50852 472968 79547 0 3 0x4000082 thrsleep syz-fuzzer 50852 140851 79547 0 3 0x4000082 thrsleep syz-fuzzer 50852 213854 79547 0 2 0x4000002 syz-fuzzer 50852 223655 79547 0 3 0x4000082 thrsleep syz-fuzzer 79547 438480 34116 0 3 0x10008a pause ksh 34116 140783 38307 0 3 0x92 select sshd 18668 210124 1 0 3 0x100083 ttyin getty 38307 314315 1 0 3 0x80 select sshd 63965 222920 44995 73 3 0x100090 kqread syslogd 44995 132320 1 0 3 0x100082 netio syslogd 39151 316835 1 77 2 0x100090 dhclient 71216 503312 1 0 3 0x80 poll dhclient 11228 418224 0 0 3 0x14200 bored smr 13692 188179 0 0 2 0x14200 zerothread 96141 51181 0 0 3 0x14200 aiodoned aiodoned 65184 264721 0 0 3 0x14200 syncer update 81149 251987 0 0 3 0x14200 cleaner cleaner 87685 74445 0 0 3 0x14200 reaper reaper 92514 98971 0 0 3 0x14200 pgdaemon pagedaemon 44391 304925 0 0 3 0x14200 bored crynlk 73182 473705 0 0 3 0x14200 bored crypto 18999 369915 0 0 3 0x40014200 acpi0 acpi0 97795 270713 0 0 3 0x14200 bored softnet 35646 392870 0 0 2 0x14200 systqmp 87440 18513 0 0 3 0x14200 bored systq 74903 401786 0 0 3 0x40014200 bored softclock 36663 297349 0 0 3 0x40014200 idle0 1 210810 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 9488 6362K 6868K 78643K 11183 0 pcb 13 8K 8K 78643K 97 0 rtable 84 3K 4K 78643K 373 0 ifaddr 71 15K 15K 78643K 145 0 sysctl 2 0K 0K 78643K 2 0 counters 21 16K 16K 78643K 30 0 ioctlops 0 0K 4K 78643K 795 0 iov 0 0K 12K 78643K 46 0 mount 1 1K 1K 78643K 1 0 vnodes 1216 76K 77K 78643K 1444 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 1K 78643K 136 0 dirhash 9 1K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 653 0 sigio 0 0K 0K 78643K 4 0 proc 51 38K 63K 78643K 443 0 subproc 32 2K 2K 78643K 51 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 52 0 in_multi 67 3K 3K 78643K 190 0 ether_multi 1 0K 0K 78643K 22 0 mrt 0 0K 0K 78643K 10 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 49 228K 228K 78643K 49 0 exec 0 0K 1K 78643K 252 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 138 72K 72K 78643K 2345 0 UVM aobj 21 4K 4K 78643K 25 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 10 0K 0K 78643K 34 0 temp 96 3855K 3919K 78643K 6076 0 kqueue 3 4K 10K 78643K 31 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 9 0 5 1 0 1 1 0 8 0 rtpcb 80 47 0 45 1 0 1 1 0 8 0 rtentry 112 90 0 58 2 0 2 2 0 8 0 unpcb 120 299 0 291 1 0 1 1 0 8 0 syncache 264 7 0 7 3 3 0 1 0 8 0 tcpqe 32 204 0 204 1 1 0 1 0 8 0 tcpcb 544 244 0 239 2 1 1 2 0 8 0 ipq 40 2 0 2 1 1 0 1 0 8 0 ipqe 40 4 0 4 1 1 0 1 0 8 0 inpcb 296 666 0 658 5 3 2 2 0 8 1 rttmr 72 4 0 4 2 1 1 1 0 8 1 nd6 48 28 0 21 1 0 1 1 0 8 0 pkpcb 40 4 0 4 2 2 0 1 0 8 0 ppxss 1136 3 0 3 3 2 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 355 0 160 15 1 14 15 0 8 0 art_table 32 356 0 160 2 0 2 2 0 8 0 art_node 16 87 0 56 1 0 1 1 0 8 0 sysvmsgpl 40 14 0 8 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 130 0 120 1 0 1 1 0 8 0 shmpl 112 22 0 4 1 0 1 1 0 8 0 dirhash 1024 17 0 10 3 1 2 3 0 8 0 dino2pl 256 2221 0 824 88 0 88 88 0 8 0 ffsino 240 2221 0 824 83 0 83 83 0 8 0 nchpl 144 3324 0 1740 60 0 60 60 0 8 0 uvmvnodes 72 2422 0 0 45 0 45 45 0 8 0 vnodes 208 2422 0 0 128 0 128 128 0 8 0 namei 1024 9777 0 9777 1 0 1 1 0 8 1 vcpupl 1984 7 0 0 1 0 1 1 0 8 0 vmpool 528 12 0 5 1 0 1 1 0 8 0 scxspl 192 9974 0 9974 1 0 1 1 0 8 1 plimitpl 152 55 0 48 1 0 1 1 0 8 0 sigapl 424 858 0 808 6 0 6 6 0 8 0 futexpl 56 13196 0 13196 1 0 1 1 0 8 1 knotepl 112 111 0 92 1 0 1 1 0 8 0 kqueuepl 144 96 0 91 1 0 1 1 0 8 0 pipepl 272 140 0 130 1 0 1 1 0 8 0 fdescpl 432 822 0 808 2 0 2 2 0 8 0 filepl 120 5030 0 4934 4 0 4 4 0 8 1 lockfpl 104 159 0 158 1 0 1 1 0 8 0 lockfspl 48 58 0 57 1 0 1 1 0 8 0 sessionpl 112 18 0 8 1 0 1 1 0 8 0 pgrppl 48 26 0 16 1 0 1 1 0 8 0 ucredpl 96 448 0 441 1 0 1 1 0 8 0 zombiepl 144 808 0 808 1 0 1 1 0 8 1 processpl 928 858 0 808 7 0 7 7 0 8 0 procpl 624 1574 0 1517 5 0 5 5 0 8 0 sosppl 128 14 0 14 4 4 0 1 0 8 0 sockpl 400 1016 0 998 4 1 3 4 0 8 1 mcl64k 65536 28 0 28 3 3 0 1 0 8 0 mcl16k 16384 3 0 3 2 2 0 1 0 8 0 mcl12k 12288 17 0 17 6 6 0 1 0 8 0 mcl9k 9216 5 0 5 4 4 0 1 0 8 0 mcl8k 8192 15 0 15 6 6 0 1 0 8 0 mcl4k 4096 64 0 64 4 3 1 1 0 8 1 mcl2k2 2112 2 0 2 2 1 1 1 0 8 1 mcl2k 2048 94946 0 94895 18 10 8 16 0 8 0 mtagpl 96 50 0 41 2 1 1 1 0 8 0 mbufpl 256 159559 0 159455 38 21 17 33 0 8 1 bufpl 280 4484 0 128 312 0 312 312 0 8 0 anonpl 16 93210 0 75960 86 15 71 77 0 107 1 amapchunkpl 152 3814 0 3671 25 19 6 20 0 158 0 amappl16 192 3649 0 2696 59 10 49 54 0 8 1 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 140 0 134 1 0 1 1 0 8 0 amappl13 168 200 0 196 1 0 1 1 0 8 0 amappl12 160 178 0 175 2 1 1 1 0 8 0 amappl11 152 154 0 145 1 0 1 1 0 8 0 amappl10 144 13 0 9 1 0 1 1 0 8 0 amappl9 136 705 0 702 1 0 1 1 0 8 0 amappl8 128 670 0 631 2 0 2 2 0 8 0 amappl7 120 114 0 102 1 0 1 1 0 8 0 amappl6 112 24 0 19 1 0 1 1 0 8 0 amappl5 104 653 0 641 1 0 1 1 0 8 0 amappl4 96 553 0 523 1 0 1 1 0 8 0 amappl3 88 231 0 223 1 0 1 1 0 8 0 amappl2 80 5871 0 5802 2 0 2 2 0 8 0 amappl1 72 26820 0 26397 23 14 9 17 0 8 0 amappl 80 1824 0 1776 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 24 0 4 1 0 1 1 0 8 0 uaddrrnd 24 834 0 813 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 834 0 813 1 0 1 1 0 8 0 vmmpekpl 168 8897 0 8858 2 0 2 2 0 8 0 vmmpepl 168 106577 0 104497 139 46 93 123 0 357 0 vmsppl 272 833 0 813 2 0 2 2 0 8 0 pdppl 4096 1674 0 1633 8 2 6 6 0 8 0 pvpl 32 270601 0 250257 199 30 169 183 0 265 4 pmappl 200 833 0 813 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 286 0 53 8 0 8 8 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace in_delmulti(ffffffffffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000af8c00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac6000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac6000) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000ac6000) at tun_clone_destroy+0x1c7 sys/net/if_tun.c:326 ifioctl(fffffd805f748c80,80206979,ffff80001d75b270,ffff80001e7d6020) at ifioctl+0x3de sys/net/if.c:1828 sys_ioctl(ffff80001e7d6020,ffff80001d75b388,ffff80001d75b3d0) at sys_ioctl+0x4a1 syscall(ffff80001d75b450) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x67eedebb490, count: -9 ddb> machine ddbcpu 1 No such command ddb> trace in_delmulti(ffffffffffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000af8c00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac6000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac6000) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000ac6000) at tun_clone_destroy+0x1c7 sys/net/if_tun.c:326 ifioctl(fffffd805f748c80,80206979,ffff80001d75b270,ffff80001e7d6020) at ifioctl+0x3de sys/net/if.c:1828 sys_ioctl(ffff80001e7d6020,ffff80001d75b388,ffff80001d75b3d0) at sys_ioctl+0x4a1 syscall(ffff80001d75b450) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x67eedebb490, count: -9