uvm_fault(0xffffffff82798f10, 0xfffffffc0000000b, 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(0xffffffff82798f10, 0xfffffffc0000000b, 0, 1) -> e in_delmulti(fffffffbffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff80001f842990, count: 0 ddb> trace in_delmulti(fffffffbffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000af7a00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000b10800) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000b10800) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000b10800) 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(ffff80001f842b70) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806045f9c0,7,fffffd806c3bfae0,ffff80001f7e78d0) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd805f7f20f0,ffff80001f7e78d0) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd805f7f20f0,ffff80001f7e78d0) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd805f7f20f0,ffff80001f7e78d0) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd805f7f20f0,ffff80001f7e78d0) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001f7e78d0) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001f7e78d0,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff80001f7e78d0,19) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff80001f7e78d0,19) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff80001f7e78d0) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001f842ff0) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001f842ff0) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffab10, count: -17 ddb> show registers rdi 0x2 rsi 0 rbp 0xffff80001f842940 rbx 0 rdx 0 rcx 0x1 rax 0xffff80001f7e78d0 r8 0xffff800000af7a00 r9 0xffffffff817c4993 rt_ifa_purge+0x153 r10 0x5 r11 0x79ed8d45d3df9545 r12 0 r13 0x3 r14 0xfffffffbffffffff r15 0x1 rip 0xffffffff81b5242d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001f8428e0 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> show proc PROC (syz-executor.1) pid=429110 stat=onproc flags process=a proc=2000 pri=32, usrpri=79, nice=20 forw=0xffffffffffffffff, list=0xffff80001f7e73e0,0xffff80001d6bea08 process=0xffff80001e79cb30 user=0xffff80001f83e000, vmspace=0xfffffd8053c5bdd8 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 21415 180194 70275 0 2 0 syz-executor.0 21415 233739 70275 0 3 0x4000080 netcon syz-executor.0 21415 151944 70275 0 2 0x4000000 syz-executor.0 61524 255018 0 0 3 0x14280 nfsidl nfsio 53544 323062 0 0 3 0x14280 nfsidl nfsio 41853 152846 0 0 3 0x14280 nfsidl nfsio 79545 381971 0 0 3 0x14280 nfsidl nfsio 7284 71638 0 0 3 0x14280 nfsidl nfsio 38166 295598 0 0 3 0x14280 nfsidl nfsio 86946 168348 0 0 3 0x14280 nfsidl nfsio 10363 100782 0 0 3 0x14280 nfsidl nfsio 68475 498520 0 0 3 0x14280 nfsidl nfsio 56082 340014 0 0 3 0x14280 nfsidl nfsio 13972 475883 0 0 3 0x14280 nfsidl nfsio 60054 72818 0 0 3 0x14280 nfsidl nfsio 36721 316621 0 0 3 0x14280 nfsidl nfsio 99212 501242 0 0 3 0x14280 nfsidl nfsio 58525 20842 0 0 3 0x14280 nfsidl nfsio 82616 365149 0 0 3 0x14280 nfsidl nfsio 75653 336568 0 0 3 0x14280 nfsidl nfsio 46777 399423 0 0 3 0x14280 nfsidl nfsio 30032 447256 0 0 3 0x14280 nfsidl nfsio 39991 411021 0 0 3 0x14280 nfsidl nfsio 70275 100109 88121 0 3 0x82 nanosleep syz-executor.0 7785 125588 0 0 3 0x14200 bored sosplice 63073 304241 0 0 3 0x14200 acct acct 88121 83795 89703 0 3 0x82 thrsleep syz-fuzzer 88121 146119 89703 0 3 0x4000082 thrsleep syz-fuzzer 88121 169211 89703 0 3 0x4000082 thrsleep syz-fuzzer 88121 137303 89703 0 3 0x4000082 thrsleep syz-fuzzer 88121 385456 89703 0 3 0x4000082 thrsleep syz-fuzzer 88121 381210 89703 0 3 0x4000082 kqread syz-fuzzer 89703 296460 48178 0 3 0x10008a pause ksh 48178 236275 17659 0 3 0x92 select sshd 60150 341015 1 0 3 0x100083 ttyin getty 17659 415755 1 0 3 0x80 select sshd 4652 32505 4938 73 3 0x100090 kqread syslogd 4938 445606 1 0 3 0x100082 netio syslogd 90951 375393 1 77 3 0x100090 poll dhclient 69975 412902 1 0 3 0x80 poll dhclient 90511 15653 0 0 3 0x14200 bored smr 29970 85156 0 0 2 0x14200 zerothread 28011 107665 0 0 3 0x14200 aiodoned aiodoned 59585 36526 0 0 3 0x14200 syncer update 81820 181304 0 0 3 0x14200 cleaner cleaner 39769 429167 0 0 3 0x14200 reaper reaper 15622 238015 0 0 3 0x14200 pgdaemon pagedaemon 58322 166665 0 0 3 0x14200 bored crynlk 17469 222830 0 0 3 0x14200 bored crypto 77680 127167 0 0 3 0x40014200 acpi0 acpi0 1262 251835 0 0 3 0x14200 bored softnet 41004 177506 0 0 3 0x14200 bored systqmp 4931 41878 0 0 3 0x14200 bored systq 27043 302752 0 0 3 0x40014200 bored softclock 11413 305509 0 0 3 0x40014200 idle0 1 242666 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 9486 6361K 6612K 78643K 11444 0 pcb 13 8K 8K 78643K 151 0 rtable 123 6K 9K 78643K 1788 0 ifaddr 70 15K 16K 78643K 346 0 sysctl 3 1K 1K 78643K 3 0 counters 21 16K 16K 78643K 39 0 ioctlops 0 0K 4K 78643K 185 0 iov 0 0K 32K 78643K 92 0 mount 1 1K 1K 78643K 1 0 vnodes 1216 76K 77K 78643K 1614 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 267 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 1182 0 sigio 0 0K 0K 78643K 22 0 proc 50 38K 55K 78643K 582 0 subproc 23 1K 2K 78643K 102 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 166 0 in_multi 64 3K 4K 78643K 241 0 ether_multi 1 0K 0K 78643K 25 0 mrt 0 0K 0K 78643K 8 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 67 307K 307K 78643K 67 0 exec 0 0K 1K 78643K 313 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 156 121K 121K 78643K 3840 0 UVM aobj 48 2K 2K 78643K 59 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 108 0 NDP 10 0K 0K 78643K 54 0 temp 128 3878K 3958K 78643K 37915 0 kqueue 3 4K 10K 78643K 33 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 18 0 12 1 0 1 1 0 8 0 rtpcb 88 1082 0 1080 1 0 1 1 0 8 0 rtentry 112 145 0 101 2 0 2 2 0 8 0 unpcb 120 495 0 487 1 0 1 1 0 8 0 syncache 272 11 0 11 3 3 0 1 0 8 0 sackhl 24 2 0 2 2 2 0 1 0 8 0 tcpqe 32 511 0 511 2 2 0 1 0 8 0 tcpcb 592 398 0 388 6 4 2 3 0 8 1 inpcb 296 1034 0 1024 6 4 2 2 0 8 1 rttmr 72 1 0 1 1 1 0 1 0 8 0 ip6q 72 1 0 1 1 1 0 1 0 8 0 ip6af 40 2 0 2 1 1 0 1 0 8 0 nd6 48 38 0 32 1 0 1 1 0 8 0 pkpcb 40 6 0 6 2 2 0 1 0 8 0 pfosfp 40 1 0 0 1 0 1 1 0 8 0 pfosfpen 112 2 0 0 1 0 1 1 0 8 0 pfrktable 1344 215 0 210 3 2 1 2 0 8 0 pftag 88 42 0 40 3 2 1 1 0 8 0 pfrule 1360 41 0 31 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 528 0 328 17 4 13 15 0 8 0 art_table 32 529 0 328 2 0 2 2 0 8 0 art_node 16 142 0 104 1 0 1 1 0 8 0 sysvmsgpl 40 40 0 28 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 259 0 249 1 0 1 1 0 8 0 shmpl 112 56 0 11 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 3279 0 1880 88 0 88 88 0 8 0 ffsino 240 3279 0 1880 83 0 83 83 0 8 0 nchpl 144 5051 0 3469 60 0 60 60 0 8 0 uvmvnodes 72 3598 0 0 66 0 66 66 0 8 0 vnodes 208 3598 0 0 190 0 190 190 0 8 0 namei 1024 14356 0 14356 4 3 1 1 0 8 1 vcpupl 1984 11 0 0 2 0 2 2 0 8 0 vmpool 528 12 0 1 1 0 1 1 0 8 0 pfiaddrpl 120 64 0 60 2 1 1 1 0 8 0 scxspl 200 15130 0 15130 1 0 1 1 0 8 1 plimitpl 152 78 0 71 1 0 1 1 0 8 0 sigapl 424 1398 0 1348 6 0 6 6 0 8 0 futexpl 56 23449 0 23449 3 2 1 1 0 8 1 knotepl 112 150 0 132 1 0 1 1 0 8 0 kqueuepl 152 125 0 121 1 0 1 1 0 8 0 pipepl 272 216 0 206 5 3 2 2 0 8 1 fdescpl 432 1342 0 1328 2 0 2 2 0 8 0 filepl 120 7993 0 7904 5 1 4 5 0 8 1 lockfpl 104 211 0 210 1 0 1 1 0 8 0 lockfspl 48 79 0 78 1 0 1 1 0 8 0 sessionpl 120 21 0 11 1 0 1 1 0 8 0 pgrppl 48 25 0 15 1 0 1 1 0 8 0 ucredpl 96 669 0 662 1 0 1 1 0 8 0 zombiepl 144 1349 0 1348 2 1 1 1 0 8 0 processpl 944 1398 0 1348 7 0 7 7 0 8 0 procpl 632 2743 0 2686 11 5 6 6 0 8 1 sosppl 144 15 0 15 4 3 1 1 0 8 1 sockpl 400 2622 0 2602 8 4 4 4 0 8 2 mcl64k 65536 32 0 32 6 5 1 1 0 8 1 mcl16k 16384 9 0 9 3 2 1 1 0 8 1 mcl12k 12288 27 0 27 5 4 1 1 0 8 1 mcl9k 9216 12 0 12 4 3 1 1 0 8 1 mcl8k 8192 98 0 98 4 3 1 1 0 8 1 mcl4k 4096 284 0 284 4 3 1 1 0 8 1 mcl2k2 2112 22 0 22 4 3 1 1 0 8 1 mcl2k 2048 97004 0 96937 26 16 10 19 0 8 0 mtagpl 96 78 0 73 2 1 1 1 0 8 0 mbufpl 256 163665 0 163442 24 4 20 20 0 8 1 bufpl 280 6114 0 760 383 0 383 383 0 8 0 anonpl 16 154740 0 135417 96 15 81 85 0 107 0 amapchunkpl 152 6499 0 6315 37 29 8 21 0 158 0 amappl16 192 6346 0 5273 87 31 56 63 0 8 2 amappl15 184 339 0 337 1 0 1 1 0 8 0 amappl14 176 205 0 200 1 0 1 1 0 8 0 amappl13 168 55 0 52 1 0 1 1 0 8 0 amappl12 160 28 0 24 1 0 1 1 0 8 0 amappl11 152 173 0 164 1 0 1 1 0 8 0 amappl10 144 352 0 349 1 0 1 1 0 8 0 amappl9 136 922 0 918 1 0 1 1 0 8 0 amappl8 128 761 0 719 2 0 2 2 0 8 0 amappl7 120 129 0 115 1 0 1 1 0 8 0 amappl6 112 144 0 137 1 0 1 1 0 8 0 amappl5 104 1156 0 1144 1 0 1 1 0 8 0 amappl4 96 619 0 586 1 0 1 1 0 8 0 amappl3 88 233 0 224 1 0 1 1 0 8 0 amappl2 80 10109 0 10041 2 0 2 2 0 8 0 amappl1 72 40091 0 39678 24 15 9 17 0 8 0 amappl 80 3006 0 2949 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 58 0 11 1 0 1 1 0 8 0 uaddrrnd 24 1354 0 1329 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1354 0 1329 1 0 1 1 0 8 0 vmmpekpl 168 11300 0 11262 2 0 2 2 0 8 0 vmmpepl 168 173111 0 170892 203 68 135 136 0 357 35 vmsppl 272 1353 0 1329 2 0 2 2 0 8 0 pdppl 4096 2714 0 2669 6 0 6 6 0 8 0 pvpl 32 413183 0 390843 222 33 189 201 0 265 4 pmappl 200 1353 0 1329 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 290 0 52 7 0 7 7 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace in_delmulti(fffffffbffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000af7a00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000b10800) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000b10800) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000b10800) 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(ffff80001f842b70) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806045f9c0,7,fffffd806c3bfae0,ffff80001f7e78d0) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd805f7f20f0,ffff80001f7e78d0) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd805f7f20f0,ffff80001f7e78d0) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd805f7f20f0,ffff80001f7e78d0) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd805f7f20f0,ffff80001f7e78d0) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001f7e78d0) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001f7e78d0,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff80001f7e78d0,19) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff80001f7e78d0,19) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff80001f7e78d0) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001f842ff0) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001f842ff0) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffab10, count: -17 ddb> machine ddbcpu 1 No such command ddb> trace in_delmulti(fffffffbffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000af7a00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000b10800) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000b10800) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000b10800) 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(ffff80001f842b70) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806045f9c0,7,fffffd806c3bfae0,ffff80001f7e78d0) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd805f7f20f0,ffff80001f7e78d0) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd805f7f20f0,ffff80001f7e78d0) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd805f7f20f0,ffff80001f7e78d0) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd805f7f20f0,ffff80001f7e78d0) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001f7e78d0) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001f7e78d0,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff80001f7e78d0,19) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff80001f7e78d0,19) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff80001f7e78d0) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001f842ff0) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001f842ff0) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffab10, count: -17