uvm_fault(0xffffffff82795140, 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(0xffffffff82795140, 0xffffffff0000000b, 0, 1) -> e in_delmulti(fffffffeffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff80001d77f350, count: 0 ddb> trace in_delmulti(fffffffeffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000ad8a00) 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 tun_dev_close(5d00,7) at tun_dev_close+0x160 sys/net/if_tun.c:477 spec_close(ffff80001d77f530) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd8062b4d8f0,7,fffffd806c3bf960,ffff80001d6a9c38) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd805738fe20,ffff80001d6a9c38) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd805738fe20,ffff80001d6a9c38) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd805738fe20,ffff80001d6a9c38) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd805738fe20,ffff80001d6a9c38) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d6a9c38) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d6a9c38,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff80001d6a9c38,19) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff80001d6a9c38,19) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff80001d6a9c38) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001d77f9b0) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001d77f9b0) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe3b50, count: -17 ddb> show registers rdi 0x2 rsi 0 rbp 0xffff80001d77f300 rbx 0 rdx 0x3 rcx 0x1 rax 0 r8 0xffffffff818ebc13 rt_ifa_purge+0x153 r9 0x5 r10 0xa2181a2dd725b2ca r11 0xd9b6172132c75076 r12 0 r13 0x3 r14 0xfffffffeffffffff r15 0x1 rip 0xffffffff81e46f2d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001d77f2a0 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> show proc PROC (syz-executor.0) pid=115430 stat=onproc flags process=a proc=2000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6aa388,0xffff80001d6a9eb8 process=0xffff80001d6c55d0 user=0xffff80001d77a000, vmspace=0xfffffd806bc09990 estcpu=36, cpticks=2, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 77815 489712 0 0 3 0x14200 bored sosplice 76654 458580 0 0 3 0x14280 nfsidl nfsio 73155 50986 0 0 3 0x14280 nfsidl nfsio 49484 133212 0 0 3 0x14280 nfsidl nfsio 14795 266941 0 0 3 0x14280 nfsidl nfsio 90098 66157 0 0 3 0x14280 nfsidl nfsio 34839 152150 0 0 3 0x14280 nfsidl nfsio 61316 287827 0 0 3 0x14280 nfsidl nfsio 57585 472018 0 0 3 0x14280 nfsidl nfsio 47159 238286 0 0 3 0x14280 nfsidl nfsio 11935 97905 0 0 3 0x14280 nfsidl nfsio 94583 410185 0 0 3 0x14280 nfsidl nfsio 66903 34668 0 0 3 0x14280 nfsidl nfsio 70509 444136 0 0 3 0x14280 nfsidl nfsio 8088 222128 0 0 3 0x14280 nfsidl nfsio 37866 128088 0 0 3 0x14280 nfsidl nfsio 96584 39357 0 0 3 0x14280 nfsidl nfsio 86228 230850 0 0 3 0x14280 nfsidl nfsio 89008 128968 0 0 3 0x14280 nfsidl nfsio 3877 442686 0 0 3 0x14280 nfsidl nfsio 92552 211065 0 0 3 0x14280 nfsidl nfsio 96560 411747 88806 0 2 0x2 syz-executor.1 88806 289801 33987 0 3 0x82 thrsleep syz-fuzzer 88806 132985 33987 0 2 0x4000082 syz-fuzzer 88806 271113 33987 0 2 0x4000002 syz-fuzzer 88806 325903 33987 0 3 0x4000082 thrsleep syz-fuzzer 88806 154607 33987 0 3 0x4000082 thrsleep syz-fuzzer 88806 294067 33987 0 3 0x4000082 thrsleep syz-fuzzer 88806 224846 33987 0 3 0x4000082 thrsleep syz-fuzzer 88806 261482 33987 0 3 0x4000082 thrsleep syz-fuzzer 33987 87326 17362 0 3 0x10008a pause ksh 17362 305081 87898 0 3 0x92 select sshd 53428 12150 1 0 3 0x100083 ttyin getty 87898 117825 1 0 3 0x80 select sshd 36857 458557 79271 73 3 0x100090 kqread syslogd 79271 33134 1 0 3 0x100082 netio syslogd 63670 365425 1 77 2 0x100090 dhclient 95898 263407 1 0 3 0x80 poll dhclient 86987 414483 0 0 3 0x14200 bored smr 78664 352732 0 0 2 0x14200 zerothread 10302 293744 0 0 3 0x14200 aiodoned aiodoned 66528 2233 0 0 3 0x14200 syncer update 91088 330747 0 0 3 0x14200 cleaner cleaner 43538 452635 0 0 3 0x14200 reaper reaper 4106 495282 0 0 3 0x14200 pgdaemon pagedaemon 56849 42972 0 0 3 0x14200 bored crynlk 80555 85339 0 0 3 0x14200 bored crypto 52128 410638 0 0 3 0x40014200 acpi0 acpi0 56278 208124 0 0 3 0x14200 bored softnet 29405 310874 0 0 2 0x14200 systqmp 11528 81090 0 0 3 0x14200 bored systq 20756 131819 0 0 3 0x40014200 bored softclock 46603 235280 0 0 3 0x40014200 idle0 1 399856 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 9513 6349K 7233K 78643K 13197 0 pcb 13 8K 8K 78643K 121 0 rtable 95 4K 8K 78643K 766 0 ifaddr 88 17K 18K 78643K 279 0 sysctl 2 0K 0K 78643K 2 0 counters 21 16K 16K 78643K 26 0 ioctlops 0 0K 4K 78643K 103 0 iov 0 0K 16K 78643K 72 0 mount 1 1K 1K 78643K 1 0 vnodes 1229 77K 77K 78643K 1848 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 6 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 166 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 4 9K 25K 78643K 684 0 sigio 0 0K 0K 78643K 6 0 proc 49 38K 63K 78643K 394 0 subproc 23 1K 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 47 0 in_multi 56 2K 3K 78643K 198 0 ether_multi 1 0K 0K 78643K 19 0 mrt 0 0K 0K 78643K 5 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 221 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 137 32K 33K 78643K 2369 0 UVM aobj 34 4K 4K 78643K 36 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 94 0 NDP 14 0K 0K 78643K 39 0 temp 113 3868K 3932K 78643K 7329 0 kqueue 3 4K 16K 78643K 50 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 8 0 4 1 0 1 1 0 8 0 rtpcb 80 41 0 39 1 0 1 1 0 8 0 rtentry 112 109 0 74 2 0 2 2 0 8 0 unpcb 120 333 0 325 1 0 1 1 0 8 0 syncache 264 13 0 13 3 3 0 1 0 8 0 tcpqe 32 341 0 341 2 2 0 1 0 8 0 tcpcb 544 195 0 181 4 3 1 2 0 8 0 ipq 40 2 0 2 1 1 0 1 0 8 0 ipqe 40 6 0 6 1 1 0 1 0 8 0 inpcb 296 607 0 598 4 2 2 2 0 8 1 rttmr 72 2 0 2 2 2 0 1 0 8 0 nd6 48 30 0 27 1 0 1 1 0 8 0 pkpcb 40 6 0 6 2 1 1 1 0 8 1 swfcl 56 2 0 0 1 0 1 1 0 8 0 ppxss 1136 1 0 1 1 1 0 1 0 8 0 pfstscr 40 4 0 4 1 1 0 1 0 8 0 pfrktable 1344 185 0 184 2 1 1 1 0 8 0 pftag 88 33 0 32 3 2 1 1 0 8 0 pfqueue 264 2 0 0 1 0 1 1 0 8 0 pfstkey 112 4 0 4 1 1 0 1 0 8 0 pfstate 328 2 0 2 1 1 0 1 0 8 0 pfrule 1360 38 0 26 3 1 2 2 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 459 0 287 16 4 12 13 0 8 0 art_table 32 460 0 287 2 0 2 2 0 8 0 art_node 16 108 0 71 1 0 1 1 0 8 0 sysvmsgpl 40 20 0 19 2 1 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 162 0 152 1 0 1 1 0 8 0 shmpl 112 33 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2265 0 870 88 0 88 88 0 8 0 ffsino 240 2265 0 870 83 0 83 83 0 8 0 nchpl 144 3673 0 2065 60 0 60 60 0 8 0 uvmvnodes 72 2863 0 0 53 0 53 53 0 8 0 vnodes 208 2863 0 0 151 0 151 151 0 8 0 namei 1024 11141 0 11141 3 2 1 1 0 8 1 vcpupl 1984 2 0 0 1 0 1 1 0 8 0 vmpool 528 6 0 4 1 0 1 1 0 8 0 pfiaddrpl 120 54 0 54 3 2 1 1 0 8 1 scxspl 192 10363 0 10363 1 0 1 1 0 8 1 plimitpl 152 60 0 53 1 0 1 1 0 8 0 sigapl 424 893 0 845 6 0 6 6 0 8 0 futexpl 56 13355 0 13355 2 1 1 1 0 8 1 knotepl 112 120 0 103 1 0 1 1 0 8 0 kqueuepl 144 100 0 96 1 0 1 1 0 8 0 pipepl 272 158 0 149 3 1 2 2 0 8 1 fdescpl 432 856 0 843 2 0 2 2 0 8 0 filepl 120 5307 0 5223 5 0 5 5 0 8 2 lockfpl 104 113 0 112 1 0 1 1 0 8 0 lockfspl 48 46 0 45 1 0 1 1 0 8 0 sessionpl 112 17 0 7 1 0 1 1 0 8 0 pgrppl 48 19 0 9 1 0 1 1 0 8 0 ucredpl 96 511 0 504 1 0 1 1 0 8 0 zombiepl 144 846 0 845 2 1 1 1 0 8 0 processpl 928 893 0 845 7 0 7 7 0 8 0 procpl 624 1651 0 1596 7 2 5 5 0 8 0 sosppl 128 2 0 2 1 0 1 1 0 8 1 sockpl 400 988 0 969 6 1 5 5 0 8 3 mcl64k 65536 29 0 29 1 0 1 1 0 8 1 mcl16k 16384 6 0 6 3 2 1 1 0 8 1 mcl12k 12288 20 0 20 2 1 1 1 0 8 1 mcl9k 9216 6 0 6 4 3 1 1 0 8 1 mcl8k 8192 26 0 26 2 1 1 1 0 8 1 mcl4k 4096 52 0 52 3 2 1 1 0 8 1 mcl2k2 2112 6 0 6 3 3 0 1 0 8 0 mcl2k 2048 92207 0 92134 27 17 10 22 0 8 0 mtagpl 96 81 0 42 3 1 2 2 0 8 0 mbufpl 256 150197 0 149948 34 5 29 30 0 8 0 bufpl 280 4763 0 137 331 0 331 331 0 8 0 anonpl 16 91572 0 74938 99 16 83 85 0 107 13 amapchunkpl 152 3541 0 3400 14 6 8 11 0 158 0 amappl16 192 4170 0 3259 59 7 52 58 0 8 6 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 23 0 19 1 0 1 1 0 8 0 amappl13 168 677 0 672 1 0 1 1 0 8 0 amappl12 160 341 0 338 1 0 1 1 0 8 0 amappl11 152 47 0 38 1 0 1 1 0 8 0 amappl10 144 24 0 17 1 0 1 1 0 8 0 amappl9 136 376 0 375 1 0 1 1 0 8 0 amappl8 128 356 0 305 2 0 2 2 0 8 0 amappl7 120 105 0 93 1 0 1 1 0 8 0 amappl6 112 27 0 22 1 0 1 1 0 8 0 amappl5 104 475 0 465 1 0 1 1 0 8 0 amappl4 96 1079 0 1052 1 0 1 1 0 8 0 amappl3 88 457 0 451 1 0 1 1 0 8 0 amappl2 80 6043 0 5988 2 0 2 2 0 8 0 amappl1 72 27486 0 27082 24 15 9 17 0 8 0 amappl 80 1862 0 1820 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 35 0 2 1 0 1 1 0 8 0 uaddrrnd 24 862 0 847 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 862 0 847 1 0 1 1 0 8 0 vmmpekpl 168 8903 0 8870 2 0 2 2 0 8 0 vmmpepl 168 110177 0 108253 158 52 106 149 0 357 17 vmsppl 272 861 0 847 3 1 2 2 0 8 1 pdppl 4096 1730 0 1696 6 1 5 6 0 8 0 pvpl 32 270916 0 251250 216 19 197 199 0 265 35 pmappl 200 861 0 847 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 298 0 45 8 0 8 8 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(ffff800000ad8a00) 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 tun_dev_close(5d00,7) at tun_dev_close+0x160 sys/net/if_tun.c:477 spec_close(ffff80001d77f530) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd8062b4d8f0,7,fffffd806c3bf960,ffff80001d6a9c38) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd805738fe20,ffff80001d6a9c38) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd805738fe20,ffff80001d6a9c38) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd805738fe20,ffff80001d6a9c38) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd805738fe20,ffff80001d6a9c38) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d6a9c38) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d6a9c38,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff80001d6a9c38,19) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff80001d6a9c38,19) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff80001d6a9c38) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001d77f9b0) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001d77f9b0) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe3b50, 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(ffff800000ad8a00) 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 tun_dev_close(5d00,7) at tun_dev_close+0x160 sys/net/if_tun.c:477 spec_close(ffff80001d77f530) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd8062b4d8f0,7,fffffd806c3bf960,ffff80001d6a9c38) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd805738fe20,ffff80001d6a9c38) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd805738fe20,ffff80001d6a9c38) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd805738fe20,ffff80001d6a9c38) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd805738fe20,ffff80001d6a9c38) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d6a9c38) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d6a9c38,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff80001d6a9c38,19) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff80001d6a9c38,19) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff80001d6a9c38) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001d77f9b0) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001d77f9b0) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe3b50, count: -17