login: uvm_fault(0xfffffd806bc0abb0, 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(0xfffffd806bc0abb0, 0x3fff7ee000b, 0, 1) -> e in_delmulti(3fff7edffff) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff80001d764c70, count: 0 ddb> trace in_delmulti(3fff7edffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b05f00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000af9000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000af9000) at if_detach+0x140 sys/net/if.c:1032 tun_clone_destroy(ffff800000af9000) 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(ffff80001d764e50) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd805e052750,7,fffffd806c3bfcc0,ffff80001e794a00) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8057234448,ffff80001e794a00) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8057234448,ffff80001e794a00) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd8057234448,ffff80001e794a00) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8057234448,ffff80001e794a00) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001e794a00) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001e794a00,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff80001e794a00,19) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff80001e794a00,19) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff80001e794a00) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001d7652d0) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001d7652d0) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe2490, count: -17 ddb> show registers rdi 0x2 rsi 0 rbp 0xffff80001d764c20 rbx 0 rdx 0 rcx 0x1 rax 0xffff80001e794a00 r8 0xffff800000b05f00 r9 0xffffffff81256843 rt_ifa_purge+0x153 r10 0x5 r11 0xe3166863c0cdefa8 r12 0 r13 0x3 r14 0x3fff7edffff r15 0x1 rip 0xffffffff817ba21d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001d764bc0 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> show proc PROC (syz-executor.1) pid=407293 stat=onproc flags process=a proc=2000 pri=32, usrpri=80, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6be780,0xffff8000ffff8508 process=0xffff800020790b40 user=0xffff80001d760000, vmspace=0xfffffd806bc0abb0 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 62340 105619 1 0 3 0x100083 ttyin getty 41417 108485 13475 0 3 0x82 piperd syz-executor.0 64330 285396 0 0 3 0x14280 nfsidl nfsio 62781 299560 0 0 3 0x14280 nfsidl nfsio 4464 421009 0 0 3 0x14280 nfsidl nfsio 17344 274144 0 0 3 0x14280 nfsidl nfsio 30366 518787 0 0 3 0x14280 nfsidl nfsio 71938 377936 0 0 3 0x14280 nfsidl nfsio 37225 181148 0 0 3 0x14280 nfsidl nfsio 33199 223427 0 0 3 0x14280 nfsidl nfsio 18831 59709 0 0 3 0x14280 nfsidl nfsio 25434 134510 0 0 3 0x14280 nfsidl nfsio 43121 418740 0 0 3 0x14280 nfsidl nfsio 41652 520679 0 0 3 0x14280 nfsidl nfsio 99431 68686 0 0 3 0x14280 nfsidl nfsio 49648 214857 0 0 3 0x14280 nfsidl nfsio 27810 180423 0 0 3 0x14280 nfsidl nfsio 21210 517336 0 0 3 0x14280 nfsidl nfsio 59710 251851 0 0 3 0x14280 nfsidl nfsio 34409 281604 0 0 3 0x14280 nfsidl nfsio 18 45632 0 0 3 0x14280 nfsidl nfsio 99382 333645 0 0 3 0x14280 nfsidl nfsio 38495 221959 0 0 3 0x14200 acct acct 13475 41432 39693 0 3 0x82 thrsleep syz-fuzzer 13475 374473 39693 0 3 0x4000082 nanosleep syz-fuzzer 13475 426146 39693 0 3 0x4000082 thrsleep syz-fuzzer 13475 488901 39693 0 2 0x4000002 syz-fuzzer 13475 405126 39693 0 3 0x4000082 thrsleep syz-fuzzer 13475 123704 39693 0 3 0x4000082 thrsleep syz-fuzzer 39693 433985 74017 0 3 0x10008a pause ksh 74017 83474 65854 0 3 0x92 select sshd 65854 93355 1 0 3 0x80 select sshd 37582 394280 50179 73 3 0x100090 kqread syslogd 50179 315751 1 0 3 0x100082 netio syslogd 9451 7790 1 77 3 0x100090 poll dhclient 64055 136464 1 0 3 0x80 poll dhclient 60684 69980 0 0 3 0x14200 bored smr 66485 151181 0 0 2 0x14200 zerothread 64248 140912 0 0 3 0x14200 aiodoned aiodoned 11167 513978 0 0 3 0x14200 syncer update 78238 474799 0 0 3 0x14200 cleaner cleaner 9675 17306 0 0 3 0x14200 reaper reaper 41404 213625 0 0 3 0x14200 pgdaemon pagedaemon 95452 298829 0 0 3 0x14200 bored crynlk 51113 259689 0 0 3 0x14200 bored crypto 27860 193548 0 0 3 0x40014200 acpi0 acpi0 35876 377940 0 0 3 0x14200 bored softnet 45856 127586 0 0 3 0x14200 bored systqmp 70442 251506 0 0 3 0x14200 bored systq 95586 227768 0 0 3 0x40014200 bored softclock 22446 240833 0 0 3 0x40014200 idle0 1 493050 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 9493 6358K 6866K 78643K 11275 0 pcb 13 8K 8K 78643K 119 0 rtable 99 7K 11K 78643K 711 0 ifaddr 82 16K 17K 78643K 211 0 sysctl 2 0K 0K 78643K 2 0 counters 21 16K 16K 78643K 30 0 ioctlops 0 0K 4K 78643K 100 0 iov 0 0K 16K 78643K 44 0 mount 1 1K 1K 78643K 1 0 vnodes 1223 77K 77K 78643K 1469 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 11 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 165 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 4 9K 25K 78643K 647 0 sigio 0 0K 0K 78643K 4 0 proc 49 38K 63K 78643K 529 0 subproc 23 1K 2K 78643K 85 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 53 0 in_multi 41 2K 2K 78643K 141 0 ether_multi 1 0K 0K 78643K 15 0 mrt 0 0K 0K 78643K 13 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 251 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 130 39K 55K 78643K 2406 0 UVM aobj 24 2K 2K 78643K 39 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 1K 78643K 74 0 NDP 12 0K 0K 78643K 35 0 temp 129 3871K 3964K 78643K 18427 0 kqueue 3 4K 8K 78643K 9 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 12 0 8 1 0 1 1 0 8 0 rtpcb 88 45 0 43 1 0 1 1 0 8 0 rtentry 112 101 0 72 2 0 2 2 0 8 0 unpcb 120 800 0 792 1 0 1 1 0 8 0 syncache 272 7 0 7 3 3 0 1 0 8 0 tcpqe 32 86 0 86 2 2 0 1 0 8 0 tcpcb 592 542 0 538 4 3 1 3 0 8 0 inpcb 296 890 0 883 3 2 1 2 0 8 0 rttmr 72 6 0 6 4 4 0 1 0 8 0 nd6 48 21 0 17 1 0 1 1 0 8 0 pkpcb 40 10 0 10 1 1 0 1 0 8 0 ppxss 1136 2 0 2 1 1 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 135 0 126 6 5 1 2 0 8 0 pftag 88 18 0 16 4 3 1 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 112 2 0 0 1 0 1 1 0 8 0 pfstate 328 1 0 0 1 0 1 1 0 8 0 pfrule 1360 27 0 20 3 2 1 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 637 0 485 20 10 10 14 0 8 0 art_table 32 639 0 485 2 0 2 2 0 8 0 art_node 16 100 0 76 1 0 1 1 0 8 0 sysvmsgpl 40 17 0 11 1 0 1 1 0 8 0 semapl 112 163 0 153 1 0 1 1 0 8 0 shmpl 112 36 0 15 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2152 0 752 88 0 88 88 0 8 0 ffsino 240 2152 0 752 83 0 83 83 0 8 0 nchpl 144 3409 0 1832 60 0 60 60 0 8 0 uvmvnodes 72 2387 0 0 44 0 44 44 0 8 0 vnodes 208 2387 0 0 126 0 126 126 0 8 0 namei 1024 8897 0 8897 2 1 1 1 0 8 1 vcpupl 1984 2 0 0 1 0 1 1 0 8 0 vmpool 528 9 0 7 3 2 1 1 0 8 0 pfiaddrpl 120 44 0 36 4 3 1 1 0 8 0 scxspl 200 10004 0 10004 5 4 1 1 0 8 1 plimitpl 152 49 0 42 1 0 1 1 0 8 0 sigapl 424 847 0 799 6 0 6 6 0 8 0 futexpl 56 13738 0 13738 2 1 1 1 0 8 1 knotepl 112 108 0 90 1 0 1 1 0 8 0 kqueuepl 152 544 0 542 1 0 1 1 0 8 0 pipepl 272 137 0 127 3 2 1 2 0 8 0 fdescpl 432 812 0 799 2 0 2 2 0 8 0 filepl 120 5408 0 5322 5 1 4 4 0 8 1 lockfpl 104 113 0 112 1 0 1 1 0 8 0 lockfspl 48 47 0 46 1 0 1 1 0 8 0 sessionpl 120 22 0 12 1 0 1 1 0 8 0 pgrppl 48 26 0 16 1 0 1 1 0 8 0 ucredpl 96 318 0 311 1 0 1 1 0 8 0 zombiepl 144 800 0 799 2 1 1 1 0 8 0 processpl 944 847 0 799 7 0 7 7 0 8 0 procpl 632 1562 0 1509 6 1 5 6 0 8 0 sockpl 400 1745 0 1728 6 3 3 4 0 8 1 mcl64k 65536 20 0 20 4 3 1 1 0 8 1 mcl16k 16384 3 0 3 3 3 0 1 0 8 0 mcl12k 12288 19 0 19 6 6 0 1 0 8 0 mcl9k 9216 9 0 9 5 5 0 1 0 8 0 mcl8k 8192 29 0 29 3 3 0 1 0 8 0 mcl4k 4096 121 0 121 3 2 1 1 0 8 1 mcl2k2 2112 3 0 3 1 1 0 1 0 8 0 mcl2k 2048 97374 0 97327 22 15 7 17 0 8 0 mtagpl 96 56 0 53 2 1 1 1 0 8 0 mbufpl 256 158450 0 158358 14 4 10 12 0 8 0 bufpl 280 4848 0 121 338 0 338 338 0 8 0 anonpl 16 100881 0 83102 93 17 76 91 0 107 0 amapchunkpl 152 4443 0 4269 40 32 8 21 0 158 0 amappl16 192 3906 0 2913 71 21 50 63 0 8 0 amappl15 184 184 0 182 1 0 1 1 0 8 0 amappl14 176 36 0 34 1 0 1 1 0 8 0 amappl13 168 49 0 45 1 0 1 1 0 8 0 amappl12 160 34 0 32 1 0 1 1 0 8 0 amappl11 152 340 0 330 1 0 1 1 0 8 0 amappl10 144 197 0 193 1 0 1 1 0 8 0 amappl9 136 358 0 355 1 0 1 1 0 8 0 amappl8 128 372 0 333 2 0 2 2 0 8 0 amappl7 120 131 0 120 1 0 1 1 0 8 0 amappl6 112 293 0 286 1 0 1 1 0 8 0 amappl5 104 700 0 688 1 0 1 1 0 8 0 amappl4 96 519 0 490 1 0 1 1 0 8 0 amappl3 88 165 0 156 1 0 1 1 0 8 0 amappl2 80 5665 0 5606 2 0 2 2 0 8 0 amappl1 72 27851 0 27460 23 14 9 17 0 8 0 amappl 80 1831 0 1781 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 38 0 15 1 0 1 1 0 8 0 uaddrrnd 24 821 0 806 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 821 0 806 1 0 1 1 0 8 0 vmmpekpl 168 8536 0 8504 2 0 2 2 0 8 0 vmmpepl 168 107195 0 105213 184 92 92 131 0 357 0 vmsppl 272 820 0 806 3 1 2 2 0 8 0 pdppl 4096 1648 0 1614 6 1 5 6 0 8 0 pvpl 32 285647 0 264862 210 34 176 210 0 265 0 pmappl 200 820 0 806 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 273 0 55 7 0 7 7 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(ffff800000b05f00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000af9000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000af9000) at if_detach+0x140 sys/net/if.c:1032 tun_clone_destroy(ffff800000af9000) 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(ffff80001d764e50) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd805e052750,7,fffffd806c3bfcc0,ffff80001e794a00) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8057234448,ffff80001e794a00) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8057234448,ffff80001e794a00) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd8057234448,ffff80001e794a00) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8057234448,ffff80001e794a00) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001e794a00) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001e794a00,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff80001e794a00,19) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff80001e794a00,19) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff80001e794a00) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001d7652d0) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001d7652d0) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe2490, 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(ffff800000b05f00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000af9000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000af9000) at if_detach+0x140 sys/net/if.c:1032 tun_clone_destroy(ffff800000af9000) 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(ffff80001d764e50) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd805e052750,7,fffffd806c3bfcc0,ffff80001e794a00) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8057234448,ffff80001e794a00) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8057234448,ffff80001e794a00) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd8057234448,ffff80001e794a00) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8057234448,ffff80001e794a00) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001e794a00) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001e794a00,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff80001e794a00,19) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff80001e794a00,19) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff80001e794a00) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001d7652d0) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001d7652d0) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe2490, count: -17