uvm_fault(0xfffffd8061083ab0, 0xf10000000b, 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(0xfffffd8061083ab0, 0xf10000000b, 0, 1) -> e in_delmulti(f0ffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff80001d7a4bc0, count: 0 ddb> trace in_delmulti(f0ffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b0ba00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000b0a800) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000b0a800) at if_detach+0x140 sys/net/if.c:1032 tun_clone_destroy(ffff800000b0a800) 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(ffff80001d7a4da0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd805d7c28f0,7,fffffd806c3bf6c0,ffff80001e7ba510) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8057658888,ffff80001e7ba510) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8057658888,ffff80001e7ba510) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd8057658888,ffff80001e7ba510) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8057658888,ffff80001e7ba510) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001e7ba510) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001e7ba510,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff80001e7ba510,19) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff80001e7ba510,19) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff80001e7ba510) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001d7a5220) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001d7a5220) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffeb330, count: -17 ddb> show registers rdi 0x2 rsi 0 rbp 0xffff80001d7a4b70 rbx 0 rdx 0 rcx 0x1 rax 0xffff80001e7ba510 r8 0xffff800000b0ba00 r9 0xffffffff81256843 rt_ifa_purge+0x153 r10 0x5 r11 0xd59d8c4985a68ce8 r12 0 r13 0x3 r14 0xf0ffffffff r15 0x1 rip 0xffffffff817ba21d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001d7a4b10 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> show proc PROC (syz-executor.0) pid=349187 stat=onproc flags process=a proc=2000 pri=32, usrpri=80, nice=20 forw=0xffffffffffffffff, list=0xffff80001e7ba298,0xffff80001e7baf00 process=0xffff80001d6c0010 user=0xffff80001d7a0000, vmspace=0xfffffd8061083ab0 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 72761 97878 0 0 3 0x14200 bored sosplice 17419 334965 0 0 3 0x14280 nfsidl nfsio 85171 85155 0 0 3 0x14280 nfsidl nfsio 35287 177247 0 0 3 0x14280 nfsidl nfsio 74826 458344 0 0 3 0x14280 nfsidl nfsio 76944 419394 0 0 3 0x14280 nfsidl nfsio 24278 299458 0 0 3 0x14280 nfsidl nfsio 17095 300140 0 0 3 0x14280 nfsidl nfsio 31233 97240 0 0 3 0x14280 nfsidl nfsio 98679 249600 0 0 3 0x14280 nfsidl nfsio 70279 65116 0 0 3 0x14280 nfsidl nfsio 60134 99229 0 0 3 0x14280 nfsidl nfsio 85060 299744 0 0 3 0x14280 nfsidl nfsio 36828 504787 0 0 3 0x14280 nfsidl nfsio 29247 512908 0 0 3 0x14280 nfsidl nfsio 53323 103032 0 0 3 0x14280 nfsidl nfsio 2374 187459 0 0 3 0x14280 nfsidl nfsio 28251 423194 0 0 3 0x14280 nfsidl nfsio 93129 442867 0 0 3 0x14280 nfsidl nfsio 74552 20395 0 0 3 0x14280 nfsidl nfsio 93381 395122 0 0 3 0x14280 nfsidl nfsio 39575 113482 48148 0 3 0x82 piperd syz-executor.1 48148 978 14658 0 2 0x2 syz-fuzzer 48148 502341 14658 0 3 0x4000082 nanosleep syz-fuzzer 48148 133189 14658 0 3 0x4000082 thrsleep syz-fuzzer 48148 179843 14658 0 3 0x4000082 thrsleep syz-fuzzer 48148 239504 14658 0 3 0x4000082 thrsleep syz-fuzzer 48148 340274 14658 0 3 0x4000082 thrsleep syz-fuzzer 48148 51447 14658 0 3 0x4000082 thrsleep syz-fuzzer 14658 276605 960 0 3 0x10008a pause ksh 960 38203 53288 0 3 0x92 select sshd 21813 220591 1 0 3 0x100083 ttyin getty 53288 158554 1 0 3 0x80 select sshd 9692 299643 61903 73 3 0x100010 ffs_fsync syslogd 61903 392684 1 0 3 0x100082 netio syslogd 7510 145646 1 77 2 0x100090 dhclient 61407 323065 1 0 3 0x80 poll dhclient 90744 149673 0 0 3 0x14200 bored smr 66258 484137 0 0 2 0x14200 zerothread 59278 153782 0 0 3 0x14200 aiodoned aiodoned 59530 395145 0 0 3 0x14200 syncer update 1519 492946 0 0 3 0x14200 cleaner cleaner 15137 432547 0 0 3 0x14200 reaper reaper 85847 54640 0 0 3 0x14200 pgdaemon pagedaemon 82073 76488 0 0 3 0x14200 bored crynlk 89944 490423 0 0 3 0x14200 bored crypto 16747 183107 0 0 3 0x40014200 acpi0 acpi0 84291 8160 0 0 3 0x14200 bored softnet 45860 359843 0 0 2 0x14200 systqmp 59213 300734 0 0 3 0x14200 bored systq 942 212912 0 0 3 0x40014200 bored softclock 53682 72275 0 0 3 0x40014200 idle0 1 477998 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 9484 6337K 7486K 78643K 12970 0 pcb 13 8K 8K 78643K 75 0 rtable 96 6K 10K 78643K 502 0 ifaddr 68 14K 15K 78643K 160 0 sysctl 2 0K 0K 78643K 2 0 counters 21 16K 16K 78643K 28 0 ioctlops 0 0K 4K 78643K 132 0 iov 0 0K 32K 78643K 58 0 mount 1 1K 1K 78643K 1 0 vnodes 1227 77K 77K 78643K 1792 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 12 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 172 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 4 9K 25K 78643K 602 0 sigio 0 0K 0K 78643K 10 0 proc 49 38K 63K 78643K 443 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 30 0 in_multi 51 3K 3K 78643K 132 0 ether_multi 1 0K 0K 78643K 11 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 43 201K 201K 78643K 43 0 exec 0 0K 1K 78643K 231 0 pfkey data 0 0K 0K 78643K 2 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 148 136K 136K 78643K 2248 0 UVM aobj 12 2K 2K 78643K 27 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 1K 78643K 62 0 NDP 10 0K 0K 78643K 27 0 temp 118 3879K 3943K 78643K 8048 0 kqueue 4 6K 18K 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 11 0 7 1 0 1 1 0 8 0 rtpcb 88 59 0 57 1 0 1 1 0 8 0 rtentry 112 97 0 68 2 0 2 2 0 8 0 unpcb 120 203 0 195 1 0 1 1 0 8 0 syncache 272 11 0 11 4 4 0 1 0 8 0 tcpqe 32 78 0 78 2 2 0 1 0 8 0 tcpcb 592 197 0 189 3 2 1 2 0 8 0 ipq 40 41 0 41 3 2 1 1 0 8 1 ipqe 40 127 0 127 3 2 1 1 0 8 1 inpcb 296 559 0 550 7 5 2 2 0 8 1 ip6q 72 1 0 0 1 0 1 1 0 8 0 nd6 48 16 0 12 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 ppxss 1136 4 0 4 3 3 0 1 0 8 0 pfrktable 1344 51 0 44 2 1 1 2 0 8 0 pftag 88 12 0 10 1 0 1 1 0 8 0 pfstkey 112 2 0 2 1 1 0 1 0 8 0 pfstate 328 1 0 1 1 1 0 1 0 8 0 pfrule 1360 26 0 16 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 383 0 220 15 3 12 13 0 8 0 art_table 32 384 0 220 2 0 2 2 0 8 0 art_node 16 82 0 54 1 0 1 1 0 8 0 sysvmsgpl 40 20 0 13 1 0 1 1 0 8 0 semapl 112 170 0 160 1 0 1 1 0 8 0 shmpl 112 24 0 15 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2129 0 732 88 0 88 88 0 8 0 ffsino 240 2129 0 732 83 0 83 83 0 8 0 nchpl 144 3401 0 1816 60 0 60 60 0 8 0 uvmvnodes 72 2695 0 0 49 0 49 49 0 8 0 vnodes 208 2695 0 0 142 0 142 142 0 8 0 namei 1024 9180 0 9180 2 1 1 1 0 8 1 vcpupl 1984 14 0 0 2 0 2 2 0 8 0 vmpool 528 14 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 22 0 16 1 0 1 1 0 8 0 scxspl 200 9674 0 9673 4 3 1 1 0 8 0 plimitpl 152 41 0 34 1 0 1 1 0 8 0 sigapl 424 806 0 758 6 0 6 6 0 8 0 futexpl 56 11701 0 11701 2 1 1 1 0 8 1 knotepl 112 106 0 86 1 0 1 1 0 8 0 kqueuepl 152 94 0 91 1 0 1 1 0 8 0 pipepl 272 143 0 132 4 3 1 2 0 8 0 fdescpl 432 771 0 758 2 0 2 2 0 8 0 filepl 120 4582 0 4495 4 0 4 4 0 8 0 lockfpl 104 111 0 110 1 0 1 1 0 8 0 lockfspl 48 44 0 43 1 0 1 1 0 8 0 sessionpl 120 18 0 8 1 0 1 1 0 8 0 pgrppl 48 26 0 16 1 0 1 1 0 8 0 ucredpl 96 417 0 410 1 0 1 1 0 8 0 zombiepl 144 759 0 758 2 1 1 1 0 8 0 processpl 944 806 0 758 8 1 7 7 0 8 0 procpl 632 1481 0 1427 6 1 5 6 0 8 0 sosppl 144 6 0 6 2 1 1 1 0 8 1 sockpl 400 823 0 804 5 2 3 3 0 8 1 mcl64k 65536 21 0 21 7 7 0 1 0 8 0 mcl16k 16384 3 0 3 3 3 0 1 0 8 0 mcl12k 12288 10 0 10 5 4 1 1 0 8 1 mcl9k 9216 10 0 10 6 5 1 1 0 8 1 mcl8k 8192 25 0 25 9 8 1 1 0 8 1 mcl4k 4096 47 0 47 6 5 1 1 0 8 1 mcl2k2 2112 4 0 4 4 4 0 1 0 8 0 mcl2k 2048 92984 0 92937 18 11 7 14 0 8 0 mtagpl 96 44 0 35 2 1 1 1 0 8 0 mbufpl 256 153343 0 153242 121 102 19 109 0 8 8 bufpl 280 4626 0 119 322 0 322 322 0 8 0 anonpl 16 87110 0 68323 84 6 78 83 0 107 0 amapchunkpl 152 4102 0 3925 37 29 8 21 0 158 0 amappl16 192 3393 0 2348 58 5 53 53 0 8 0 amappl15 184 209 0 207 1 0 1 1 0 8 0 amappl14 176 4 0 2 1 0 1 1 0 8 0 amappl13 168 33 0 30 1 0 1 1 0 8 0 amappl12 160 24 0 19 1 0 1 1 0 8 0 amappl11 152 51 0 41 1 0 1 1 0 8 0 amappl10 144 213 0 208 1 0 1 1 0 8 0 amappl9 136 706 0 704 1 0 1 1 0 8 0 amappl8 128 609 0 576 2 0 2 2 0 8 0 amappl7 120 309 0 296 1 0 1 1 0 8 0 amappl6 112 29 0 23 1 0 1 1 0 8 0 amappl5 104 702 0 692 1 0 1 1 0 8 0 amappl4 96 441 0 416 1 0 1 1 0 8 0 amappl3 88 136 0 126 1 0 1 1 0 8 0 amappl2 80 5286 0 5227 2 0 2 2 0 8 0 amappl1 72 26430 0 26041 22 13 9 17 0 8 0 amappl 80 1725 0 1667 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 26 0 15 1 0 1 1 0 8 0 uaddrrnd 24 785 0 758 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 785 0 758 1 0 1 1 0 8 0 vmmpekpl 168 8354 0 8325 2 0 2 2 0 8 0 vmmpepl 168 100411 0 98320 158 60 98 134 0 357 1 vmsppl 272 784 0 758 3 1 2 2 0 8 0 pdppl 4096 1576 0 1530 9 2 7 7 0 8 0 pvpl 32 263533 0 242245 199 21 178 194 0 265 0 pmappl 200 784 0 758 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 384 0 154 10 0 10 10 0 8 1 ddb> machine ddbcpu 0 No such command ddb> trace in_delmulti(f0ffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b0ba00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000b0a800) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000b0a800) at if_detach+0x140 sys/net/if.c:1032 tun_clone_destroy(ffff800000b0a800) 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(ffff80001d7a4da0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd805d7c28f0,7,fffffd806c3bf6c0,ffff80001e7ba510) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8057658888,ffff80001e7ba510) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8057658888,ffff80001e7ba510) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd8057658888,ffff80001e7ba510) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8057658888,ffff80001e7ba510) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001e7ba510) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001e7ba510,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff80001e7ba510,19) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff80001e7ba510,19) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff80001e7ba510) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001d7a5220) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001d7a5220) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffeb330, count: -17 ddb> machine ddbcpu 1 No such command ddb> trace in_delmulti(f0ffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b0ba00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000b0a800) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000b0a800) at if_detach+0x140 sys/net/if.c:1032 tun_clone_destroy(ffff800000b0a800) 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(ffff80001d7a4da0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd805d7c28f0,7,fffffd806c3bf6c0,ffff80001e7ba510) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8057658888,ffff80001e7ba510) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8057658888,ffff80001e7ba510) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd8057658888,ffff80001e7ba510) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8057658888,ffff80001e7ba510) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001e7ba510) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001e7ba510,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff80001e7ba510,19) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff80001e7ba510,19) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff80001e7ba510) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001d7a5220) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001d7a5220) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffeb330, count: -17