uvm_fault(0xffffffff827ec0f0, 0xffffffff0000000b, 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(0xffffffff827ec0f0, 0xffffffff0000000b, 0, 1) -> e in_delmulti(fffffffeffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff80001e78b1f0, count: 0 ddb> trace in_delmulti(fffffffeffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b26000) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000b21800) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000b21800) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000b21800) at tun_clone_destroy+0x1c7 sys/net/if_tun.c:326 tun_dev_close(5d01,7) at tun_dev_close+0x160 sys/net/if_tun.c:477 spec_close(ffff80001e78b3d0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd80664ebd00,7,fffffd806c3bf900,ffff80001e7beec0) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8057571e20,ffff80001e7beec0) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8057571e20,ffff80001e7beec0) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd8057571e20,ffff80001e7beec0) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8057571e20,ffff80001e7beec0) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001e7beec0) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001e7beec0,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff80001e7beec0,19) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff80001e7beec0,19) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff80001e7beec0) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001e78b850) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001e78b850) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffda650, count: -17 ddb> show registers rdi 0x2 rsi 0 rbp 0xffff80001e78b1a0 rbx 0 rdx 0x3 rcx 0x1 rax 0 r8 0xffffffff815fff63 rt_ifa_purge+0x153 r9 0x5 r10 0x1573e4a12da1abf8 r11 0xe6b6fca3548783ba r12 0 r13 0x3 r14 0xfffffffeffffffff r15 0x1 rip 0xffffffff819a982d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001e78b140 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> show proc PROC (syz-executor.1) pid=325747 stat=onproc flags process=a proc=2000 pri=32, usrpri=59, nice=20 forw=0xffffffffffffffff, list=0xffff80001e7be770,0xffff80001e7be030 process=0xffff80001e7a83d0 user=0xffff80001e786000, vmspace=0xfffffd80573febc0 estcpu=9, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 66393 318499 44372 0 2 0 syz-executor.0 66393 325260 44372 0 2 0x4000000 syz-executor.0 72801 191682 0 0 3 0x14280 nfsidl nfsio 22082 251073 0 0 3 0x14280 nfsidl nfsio 82288 28791 0 0 3 0x14280 nfsidl nfsio 12176 367955 0 0 3 0x14280 nfsidl nfsio 51135 329951 0 0 3 0x14280 nfsidl nfsio 42103 58936 0 0 3 0x14280 nfsidl nfsio 21646 197029 0 0 3 0x14280 nfsidl nfsio 44584 428647 0 0 3 0x14280 nfsidl nfsio 18986 92941 0 0 3 0x14280 nfsidl nfsio 67254 294905 0 0 3 0x14280 nfsidl nfsio 71469 406683 0 0 3 0x14280 nfsidl nfsio 32195 131609 0 0 3 0x14280 nfsidl nfsio 12366 68199 0 0 3 0x14280 nfsidl nfsio 4531 370779 0 0 3 0x14280 nfsidl nfsio 92561 493804 0 0 3 0x14280 nfsidl nfsio 60435 269325 0 0 3 0x14280 nfsidl nfsio 38083 309714 0 0 3 0x14280 nfsidl nfsio 91355 515958 0 0 3 0x14280 nfsidl nfsio 53975 228984 0 0 3 0x14280 nfsidl nfsio 16842 498741 0 0 3 0x14280 nfsidl nfsio 80123 431048 0 0 3 0x14200 bored sosplice 44372 163781 22480 0 2 0x482 syz-executor.0 22480 295838 38562 0 3 0x82 thrsleep syz-fuzzer 22480 18595 38562 0 2 0x4000002 syz-fuzzer 22480 318318 38562 0 2 0x4000002 syz-fuzzer 22480 410523 38562 0 3 0x4000082 thrsleep syz-fuzzer 22480 220377 38562 0 3 0x4000082 kqread syz-fuzzer 22480 110909 38562 0 3 0x4000082 thrsleep syz-fuzzer 22480 107397 38562 0 3 0x4000082 thrsleep syz-fuzzer 22480 385798 38562 0 3 0x4000082 thrsleep syz-fuzzer 38562 195140 72040 0 3 0x10008a pause ksh 72040 429764 1682 0 3 0x92 select sshd 11197 388727 1 0 3 0x100083 ttyin getty 1682 367331 1 0 3 0x80 select sshd 27326 469618 26897 73 2 0x100490 syslogd 26897 472099 1 0 3 0x100082 netio syslogd 65652 24235 1 77 2 0x100090 dhclient 84328 476282 1 0 3 0x80 poll dhclient 16986 439562 0 0 3 0x14200 bored smr 41377 492665 0 0 2 0x14200 zerothread 15839 269474 0 0 3 0x14200 aiodoned aiodoned 79275 347880 0 0 2 0x14200 update 87732 394030 0 0 3 0x14200 cleaner cleaner 90204 264284 0 0 3 0x14200 reaper reaper 4967 42668 0 0 3 0x14200 pgdaemon pagedaemon 70507 163848 0 0 3 0x14200 bored crynlk 36280 464434 0 0 3 0x14200 bored crypto 76175 125166 0 0 3 0x40014200 acpi0 acpi0 92807 311485 0 0 2 0x14200 softnet 23401 81772 0 0 2 0x14200 systqmp 67178 421609 0 0 3 0x14200 bored systq 77837 288738 0 0 2 0x40014200 softclock 24037 346975 0 0 3 0x40014200 idle0 1 400780 0 0 3 0x82 wait init 0 0 -1 0 2 0x10200 swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9511 6363K 7962K 78643K 13848 0 pcb 13 8K 8K 78643K 103 0 rtable 101 7K 10K 78643K 680 0 ifaddr 89 17K 19K 78643K 253 0 sysctl 2 0K 0K 78643K 2 0 counters 21 16K 17K 78643K 36 0 ioctlops 0 0K 4K 78643K 150 0 iov 0 0K 16K 78643K 111 0 mount 1 1K 1K 78643K 1 0 vnodes 1221 77K 77K 78643K 2063 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 17 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 197 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 852 0 sigio 0 0K 0K 78643K 12 0 proc 51 38K 55K 78643K 454 0 subproc 23 1K 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 68 0 in_multi 75 3K 4K 78643K 188 0 ether_multi 1 0K 0K 78643K 20 0 mrt 0 0K 0K 78643K 7 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 55 254K 254K 78643K 55 0 exec 0 0K 1K 78643K 247 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 152 121K 122K 78643K 2823 0 UVM aobj 63 2K 3K 78643K 67 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 87 0 NDP 13 0K 0K 78643K 46 0 temp 136 3864K 3928K 78643K 22440 0 kqueue 5 8K 16K 78643K 32 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 69 0 67 1 0 1 1 0 8 0 rtentry 112 99 0 67 2 0 2 2 0 8 0 unpcb 120 537 0 529 1 0 1 1 0 8 0 syncache 264 15 0 15 4 4 0 1 0 8 0 tcpcb 544 217 0 211 5 3 2 2 0 8 1 ipq 40 4 0 3 1 0 1 1 0 8 0 ipqe 40 94 0 93 1 0 1 1 0 8 0 inpcb 296 1252 0 1245 8 6 2 2 0 8 1 rttmr 72 2 0 2 2 1 1 1 0 8 1 nd6 48 25 0 19 1 0 1 1 0 8 0 ppxss 1136 1 0 1 1 1 0 1 0 8 0 pfrktable 1344 113 0 105 5 3 2 2 0 8 1 pftag 88 18 0 16 1 0 1 1 0 8 0 pfrule 1360 40 0 25 2 0 2 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 446 0 268 15 2 13 13 0 8 0 art_table 32 448 0 268 2 0 2 2 0 8 0 art_node 16 98 0 67 1 0 1 1 0 8 0 sysvmsgpl 40 26 0 14 1 0 1 1 0 8 0 semupl 112 2 0 2 2 2 0 1 0 8 0 semapl 112 194 0 184 2 1 1 1 0 8 0 shmpl 112 64 0 4 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2490 0 1094 88 0 88 88 0 8 0 ffsino 240 2490 0 1094 83 0 83 83 0 8 0 nchpl 144 3839 0 2249 60 0 60 60 0 8 0 uvmvnodes 72 3268 0 0 60 0 60 60 0 8 0 vnodes 208 3268 0 0 172 0 172 172 0 8 0 namei 1024 11333 0 11333 2 1 1 1 0 8 1 vcpupl 1984 11 0 0 2 0 2 2 0 8 0 vmpool 528 15 0 4 1 0 1 1 0 8 0 pfiaddrpl 120 38 0 34 1 0 1 1 0 8 0 scsiplug 64 2 0 2 2 2 0 1 0 8 0 scxspl 192 11733 0 11733 2 1 1 1 0 8 1 plimitpl 152 65 0 58 1 0 1 1 0 8 0 sigapl 424 1056 0 1007 6 0 6 6 0 8 0 futexpl 56 17968 0 17968 2 1 1 1 0 8 1 knotepl 112 115 0 98 1 0 1 1 0 8 0 kqueuepl 144 90 0 84 1 0 1 1 0 8 0 pipepl 272 208 0 199 2 0 2 2 0 8 1 fdescpl 432 1021 0 1007 2 0 2 2 0 8 0 filepl 120 6642 0 6557 4 0 4 4 0 8 1 lockfpl 104 233 0 232 1 0 1 1 0 8 0 lockfspl 48 80 0 79 1 0 1 1 0 8 0 sessionpl 112 18 0 8 1 0 1 1 0 8 0 pgrppl 48 32 0 22 1 0 1 1 0 8 0 ucredpl 96 1041 0 1034 1 0 1 1 0 8 0 zombiepl 144 1008 0 1007 2 1 1 1 0 8 0 processpl 928 1056 0 1007 7 0 7 7 0 8 0 procpl 624 2033 0 1976 5 0 5 5 0 8 0 sosppl 128 7 0 7 3 3 0 1 0 8 0 sockpl 400 1871 0 1854 7 4 3 4 0 8 1 mcl64k 65536 528 0 272 62 30 32 32 0 8 0 mcl16k 16384 8 0 8 5 4 1 1 0 8 1 mcl12k 12288 23 0 23 7 6 1 1 0 8 1 mcl9k 9216 12 0 12 6 5 1 1 0 8 1 mcl8k 8192 36 0 36 5 4 1 1 0 8 1 mcl4k 4096 109 0 109 4 3 1 1 0 8 1 mcl2k2 2112 6 0 6 5 5 0 1 0 8 0 mcl2k 2048 97830 0 97774 14 6 8 12 0 8 0 mtagpl 96 464 0 249 9 1 8 8 0 8 0 mbufpl 256 161172 0 160368 74 20 54 57 0 8 3 bufpl 280 5670 0 318 383 0 383 383 0 8 0 anonpl 16 144781 0 123885 128 43 85 88 0 107 1 amapchunkpl 152 5129 0 4979 31 22 9 11 0 158 2 amappl16 192 5931 0 4708 92 30 62 62 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 228 0 222 1 0 1 1 0 8 0 amappl13 168 35 0 31 1 0 1 1 0 8 0 amappl12 160 224 0 222 1 0 1 1 0 8 0 amappl11 152 252 0 242 1 0 1 1 0 8 0 amappl10 144 15 0 10 1 0 1 1 0 8 0 amappl9 136 746 0 743 1 0 1 1 0 8 0 amappl8 128 763 0 717 2 0 2 2 0 8 0 amappl7 120 114 0 101 1 0 1 1 0 8 0 amappl6 112 223 0 216 1 0 1 1 0 8 0 amappl5 104 1025 0 1013 1 0 1 1 0 8 0 amappl4 96 648 0 616 1 0 1 1 0 8 0 amappl3 88 147 0 142 1 0 1 1 0 8 0 amappl2 80 7306 0 7238 2 0 2 2 0 8 0 amappl1 72 31935 0 31512 24 15 9 17 0 8 0 amappl 80 2270 0 2222 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 66 0 4 1 0 1 1 0 8 0 uaddrrnd 24 1036 0 1011 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1036 0 1011 1 0 1 1 0 8 0 vmmpekpl 168 9871 0 9837 2 0 2 2 0 8 0 vmmpepl 168 132008 0 129631 178 68 110 131 0 357 6 vmsppl 272 1035 0 1011 3 1 2 2 0 8 0 pdppl 4096 2078 0 2033 7 1 6 6 0 8 0 pvpl 32 350625 0 326373 270 70 200 204 0 265 4 pmappl 200 1035 0 1011 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 390 0 81 9 0 9 9 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace in_delmulti(fffffffeffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b26000) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000b21800) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000b21800) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000b21800) at tun_clone_destroy+0x1c7 sys/net/if_tun.c:326 tun_dev_close(5d01,7) at tun_dev_close+0x160 sys/net/if_tun.c:477 spec_close(ffff80001e78b3d0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd80664ebd00,7,fffffd806c3bf900,ffff80001e7beec0) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8057571e20,ffff80001e7beec0) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8057571e20,ffff80001e7beec0) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd8057571e20,ffff80001e7beec0) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8057571e20,ffff80001e7beec0) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001e7beec0) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001e7beec0,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff80001e7beec0,19) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff80001e7beec0,19) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff80001e7beec0) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001e78b850) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001e78b850) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffda650, count: -17 ddb> machine ddbcpu 1 No such command ddb> trace in_delmulti(fffffffeffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b26000) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000b21800) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000b21800) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000b21800) at tun_clone_destroy+0x1c7 sys/net/if_tun.c:326 tun_dev_close(5d01,7) at tun_dev_close+0x160 sys/net/if_tun.c:477 spec_close(ffff80001e78b3d0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd80664ebd00,7,fffffd806c3bf900,ffff80001e7beec0) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8057571e20,ffff80001e7beec0) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8057571e20,ffff80001e7beec0) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd8057571e20,ffff80001e7beec0) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8057571e20,ffff80001e7beec0) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001e7beec0) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001e7beec0,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff80001e7beec0,19) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff80001e7beec0,19) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff80001e7beec0) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001e78b850) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001e78b850) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffda650, count: -17