login: uvm_fault(0xfffffd806bc0aaa0, 0x3fff7ee000b, 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(0xfffffd806bc0aaa0, 0x3fff7ee000b, 0, 1) -> e in_delmulti(3fff7edffff) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff80001f9869e0, count: 0 ddb> trace in_delmulti(3fff7edffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b0c100) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000afb800) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000afb800) at if_detach+0x140 sys/net/if.c:1032 tun_clone_destroy(ffff800000afb800) 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(ffff80001f986bc0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd8061b2f8f0,7,fffffd806c3bf6c0,ffff8000ffff8ed8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd805d7f7f08,ffff8000ffff8ed8) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd805d7f7f08,ffff8000ffff8ed8) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd805d7f7f08,ffff8000ffff8ed8) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd805d7f7f08,ffff8000ffff8ed8) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff8000ffff8ed8) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff8000ffff8ed8,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff8000ffff8ed8,19) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff8000ffff8ed8,19) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff8000ffff8ed8) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001f987040) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001f987040) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe0000, count: -17 ddb> show registers rdi 0x2 rsi 0 rbp 0xffff80001f986990 rbx 0 rdx 0 rcx 0x1 rax 0xffff8000ffff8ed8 r8 0xffff800000b0c100 r9 0xffffffff81256843 rt_ifa_purge+0x153 r10 0x5 r11 0xf1b858d46b12b2b9 r12 0 r13 0x3 r14 0x3fff7edffff r15 0x1 rip 0xffffffff817ba21d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001f986930 ss 0 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> show proc PROC (syz-executor.1) pid=430539 stat=onproc flags process=a proc=2000 pri=32, usrpri=80, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff9b30,0xffff80001d6bf170 process=0xffff80001d6c0ed0 user=0xffff80001f982000, vmspace=0xfffffd806bc0aaa0 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 7212 146451 1 0 3 0x100083 ttyin getty 20780 70748 0 0 3 0x14280 nfsidl nfsio 81491 348606 0 0 3 0x14280 nfsidl nfsio 41055 142818 0 0 3 0x14280 nfsidl nfsio 71010 381655 0 0 3 0x14280 nfsidl nfsio 21099 521056 0 0 3 0x14280 nfsidl nfsio 38054 243334 0 0 3 0x14280 nfsidl nfsio 9986 303428 0 0 3 0x14280 nfsidl nfsio 56591 322073 0 0 3 0x14280 nfsidl nfsio 63151 120152 0 0 3 0x14280 nfsidl nfsio 89653 496019 0 0 3 0x14280 nfsidl nfsio 69028 175925 0 0 3 0x14280 nfsidl nfsio 27610 116140 0 0 3 0x14280 nfsidl nfsio 80924 70668 0 0 3 0x14280 nfsidl nfsio 86589 222855 0 0 3 0x14280 nfsidl nfsio 20040 200935 0 0 3 0x14280 nfsidl nfsio 53161 70634 0 0 3 0x14280 nfsidl nfsio 83378 474128 0 0 3 0x14280 nfsidl nfsio 59416 350597 0 0 3 0x14280 nfsidl nfsio 92279 263889 0 0 3 0x14280 nfsidl nfsio 90851 76239 0 0 3 0x14280 nfsidl nfsio 64034 153580 0 0 3 0x14200 bored sosplice 11688 27922 39129 0 3 0x82 piperd syz-executor.0 39129 451639 30232 0 3 0x82 thrsleep syz-fuzzer 39129 68303 30232 0 3 0x4000082 nanosleep syz-fuzzer 39129 167526 30232 0 3 0x4000082 thrsleep syz-fuzzer 39129 476587 30232 0 3 0x4000082 thrsleep syz-fuzzer 39129 70532 30232 0 3 0x4000082 thrsleep syz-fuzzer 39129 225143 30232 0 3 0x4000082 thrsleep syz-fuzzer 39129 201731 30232 0 2 0x4000002 syz-fuzzer 30232 270264 33433 0 3 0x10008a pause ksh 33433 299796 857 0 3 0x92 select sshd 857 219650 1 0 3 0x80 select sshd 10175 3958 89553 73 3 0x100090 kqread syslogd 89553 439621 1 0 3 0x100082 netio syslogd 10822 498872 1 77 2 0x100090 dhclient 32446 157251 1 0 3 0x80 poll dhclient 91828 469378 0 0 3 0x14200 bored smr 93346 314170 0 0 2 0x14200 zerothread 77311 433502 0 0 3 0x14200 aiodoned aiodoned 86568 476071 0 0 3 0x14200 syncer update 20829 179316 0 0 3 0x14200 cleaner cleaner 13708 369011 0 0 3 0x14200 reaper reaper 8345 430184 0 0 3 0x14200 pgdaemon pagedaemon 74287 328033 0 0 3 0x14200 bored crynlk 67347 402118 0 0 3 0x14200 bored crypto 633 469199 0 0 3 0x40014200 acpi0 acpi0 40632 286958 0 0 3 0x14200 bored softnet 2636 404710 0 0 2 0x14200 systqmp 95512 249881 0 0 3 0x14200 bored systq 31394 16390 0 0 3 0x40014200 bored softclock 85478 120233 0 0 3 0x40014200 idle0 1 121968 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 9500 6352K 6740K 78643K 11731 0 pcb 13 8K 8K 78643K 156 0 rtable 80 3K 4K 78643K 437 0 ifaddr 69 13K 14K 78643K 148 0 sysctl 2 0K 0K 78643K 2 0 counters 21 16K 16K 78643K 32 0 ioctlops 0 0K 4K 78643K 824 0 iov 0 0K 16K 78643K 75 0 mount 1 1K 1K 78643K 1 0 vnodes 1224 77K 77K 78643K 1628 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 16 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 1K 78643K 107 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 4 9K 25K 78643K 895 0 sigio 0 0K 0K 78643K 4 0 proc 49 38K 63K 78643K 487 0 subproc 23 1K 2K 78643K 72 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 76 0 in_multi 39 2K 3K 78643K 147 0 ether_multi 1 0K 0K 78643K 18 0 mrt 0 0K 0K 78643K 6 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 254 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 134 55K 57K 78643K 2943 0 UVM aobj 70 7K 7K 78643K 74 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 110 0 NDP 12 0K 0K 78643K 36 0 temp 129 3862K 3926K 78643K 6755 0 kqueue 3 4K 16K 78643K 45 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 10 0 8 1 0 1 1 0 8 0 rtpcb 88 50 0 48 1 0 1 1 0 8 0 rtentry 112 96 0 66 2 0 2 2 0 8 0 unpcb 120 599 0 591 1 0 1 1 0 8 0 syncache 272 6 0 6 2 2 0 1 0 8 0 tcpqe 32 166 0 166 1 1 0 1 0 8 0 tcpcb 592 258 0 254 4 3 1 2 0 8 0 ipq 40 4 0 4 2 2 0 1 0 8 0 ipqe 40 98 0 98 2 2 0 1 0 8 0 inpcb 296 1461 0 1454 3 1 2 2 0 8 1 rttmr 72 2 0 2 1 1 0 1 0 8 0 ip6q 72 3 0 2 1 0 1 1 0 8 0 ip6af 40 4 0 4 1 1 0 1 0 8 0 nd6 48 35 0 27 1 0 1 1 0 8 0 pkpcb 40 4 0 4 1 1 0 1 0 8 0 ppxss 1136 3 0 3 2 2 0 1 0 8 0 pfrule 1360 12 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 356 0 177 17 4 13 14 0 8 0 art_table 32 357 0 177 2 0 2 2 0 8 0 art_node 16 95 0 67 1 0 1 1 0 8 0 sysvmsgpl 40 36 0 13 1 0 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 103 0 93 1 0 1 1 0 8 0 shmpl 112 71 0 4 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2485 0 1092 88 0 88 88 0 8 0 ffsino 240 2485 0 1092 83 0 83 83 0 8 0 nchpl 144 3914 0 2337 60 0 60 60 0 8 0 uvmvnodes 72 2855 0 0 52 0 52 52 0 8 0 vnodes 208 2855 0 0 151 0 151 151 0 8 0 namei 1024 11142 0 11142 2 1 1 1 0 8 1 vcpupl 1984 5 0 0 1 0 1 1 0 8 0 vmpool 528 9 0 4 1 0 1 1 0 8 0 scxspl 200 11868 0 11868 1 0 1 1 0 8 1 plimitpl 152 49 0 42 1 0 1 1 0 8 0 sigapl 424 1098 0 1050 6 0 6 6 0 8 0 futexpl 56 16676 0 16676 2 1 1 1 0 8 1 knotepl 112 133 0 115 1 0 1 1 0 8 0 kqueuepl 152 95 0 92 1 0 1 1 0 8 0 pipepl 272 160 0 150 3 2 1 2 0 8 0 fdescpl 432 1063 0 1050 2 0 2 2 0 8 0 filepl 120 6484 0 6398 5 1 4 5 0 8 0 lockfpl 104 271 0 270 1 0 1 1 0 8 0 lockfspl 48 104 0 103 1 0 1 1 0 8 0 sessionpl 120 21 0 11 1 0 1 1 0 8 0 pgrppl 48 37 0 27 1 0 1 1 0 8 0 ucredpl 96 591 0 584 1 0 1 1 0 8 0 zombiepl 144 1051 0 1050 1 0 1 1 0 8 0 processpl 944 1098 0 1050 7 0 7 7 0 8 0 procpl 632 2120 0 2066 7 1 6 6 0 8 1 sosppl 144 5 0 5 1 1 0 1 0 8 0 sockpl 400 2114 0 2097 8 5 3 5 0 8 1 mcl64k 65536 289 0 289 35 34 1 33 0 8 1 mcl16k 16384 9 0 9 5 4 1 1 0 8 1 mcl12k 12288 24 0 24 6 5 1 1 0 8 1 mcl9k 9216 8 0 8 5 4 1 1 0 8 1 mcl8k 8192 33 0 33 4 4 0 1 0 8 0 mcl4k 4096 145 0 145 3 2 1 1 0 8 1 mcl2k2 2112 17 0 17 4 3 1 1 0 8 1 mcl2k 2048 96137 0 96084 18 10 8 13 0 8 0 mtagpl 96 76 0 48 3 1 2 2 0 8 0 mbufpl 256 158397 0 158096 45 22 23 26 0 8 0 bufpl 280 5061 0 116 354 0 354 354 0 8 0 anonpl 16 142339 0 122678 113 17 96 96 0 107 11 amapchunkpl 152 5185 0 4996 26 17 9 22 0 158 0 amappl16 192 5828 0 4705 93 26 67 69 0 8 8 amappl15 184 555 0 552 1 0 1 1 0 8 0 amappl14 176 2 0 0 1 0 1 1 0 8 0 amappl13 168 40 0 37 1 0 1 1 0 8 0 amappl12 160 22 0 18 1 0 1 1 0 8 0 amappl11 152 52 0 42 1 0 1 1 0 8 0 amappl10 144 411 0 407 1 0 1 1 0 8 0 amappl9 136 643 0 641 1 0 1 1 0 8 0 amappl8 128 644 0 607 2 0 2 2 0 8 0 amappl7 120 166 0 155 1 0 1 1 0 8 0 amappl6 112 25 0 20 1 0 1 1 0 8 0 amappl5 104 981 0 967 1 0 1 1 0 8 0 amappl4 96 483 0 454 1 0 1 1 0 8 0 amappl3 88 179 0 171 1 0 1 1 0 8 0 amappl2 80 8088 0 8031 2 0 2 2 0 8 0 amappl1 72 32699 0 32300 24 15 9 17 0 8 0 amappl 80 2388 0 2334 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 73 0 4 2 0 2 2 0 8 0 uaddrrnd 24 1072 0 1054 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1072 0 1054 1 0 1 1 0 8 0 vmmpekpl 168 10282 0 10249 2 0 2 2 0 8 0 vmmpepl 168 137147 0 135023 181 72 109 137 0 357 8 vmsppl 272 1071 0 1054 3 1 2 2 0 8 0 pdppl 4096 2150 0 2113 7 1 6 6 0 8 0 pvpl 32 360054 0 338384 252 38 214 219 0 265 24 pmappl 200 1071 0 1054 3 1 2 2 0 8 1 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 330 0 94 8 0 8 8 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace in_delmulti(3fff7edffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b0c100) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000afb800) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000afb800) at if_detach+0x140 sys/net/if.c:1032 tun_clone_destroy(ffff800000afb800) 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(ffff80001f986bc0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd8061b2f8f0,7,fffffd806c3bf6c0,ffff8000ffff8ed8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd805d7f7f08,ffff8000ffff8ed8) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd805d7f7f08,ffff8000ffff8ed8) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd805d7f7f08,ffff8000ffff8ed8) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd805d7f7f08,ffff8000ffff8ed8) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff8000ffff8ed8) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff8000ffff8ed8,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff8000ffff8ed8,19) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff8000ffff8ed8,19) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff8000ffff8ed8) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001f987040) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001f987040) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe0000, count: -17 ddb> machine ddbcpu 1 No such command ddb> trace in_delmulti(3fff7edffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b0c100) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000afb800) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000afb800) at if_detach+0x140 sys/net/if.c:1032 tun_clone_destroy(ffff800000afb800) 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(ffff80001f986bc0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd8061b2f8f0,7,fffffd806c3bf6c0,ffff8000ffff8ed8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd805d7f7f08,ffff8000ffff8ed8) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd805d7f7f08,ffff8000ffff8ed8) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd805d7f7f08,ffff8000ffff8ed8) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd805d7f7f08,ffff8000ffff8ed8) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff8000ffff8ed8) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff8000ffff8ed8,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff8000ffff8ed8,19) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff8000ffff8ed8,19) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff8000ffff8ed8) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001f987040) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001f987040) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe0000, count: -17