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(0xffffffff82799bc8, 0xfffffffefffe000b, 0, 1) -> e in_delmulti(fffffffefffdffff) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff80001e7a0ab0, count: 0 ddb> trace in_delmulti(fffffffefffdffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000af2e00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac7000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac7000) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000ac7000) 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(ffff80001e7a0c90) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806747ea90,7,fffffd806c3bfc60,ffff80001d6be9f8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd805767ef18,ffff80001d6be9f8) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd805767ef18,ffff80001d6be9f8) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd805767ef18,ffff80001d6be9f8) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd805767ef18,ffff80001d6be9f8) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d6be9f8) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d6be9f8,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff80001d6be9f8,19) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff80001d6be9f8,19) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff80001d6be9f8) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001e7a1110) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001e7a1110) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd4eb0, count: -17 ddb> show registers rdi 0x2 rsi 0 rbp 0xffff80001e7a0a60 rbx 0 rdx 0 rcx 0x1 rax 0xffff80001d6be9f8 r8 0xffff800000af2e00 r9 0xffffffff81c20903 rt_ifa_purge+0x153 r10 0x5 r11 0xaf4b443fb98d567e r12 0 r13 0x3 r14 0xfffffffefffdffff r15 0x1 rip 0xffffffff8138624d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001e7a0a00 ss 0 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> show proc PROC (syz-executor.1) pid=155501 stat=onproc flags process=a proc=2000 pri=32, usrpri=84, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6bf650,0xffff80001d6be028 process=0xffff80001d6c0ed0 user=0xffff80001e79c000, vmspace=0xfffffd806bc0a220 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 64988 432179 58211 0 2 0 syz-executor.0 64988 181104 58211 0 3 0x4000080 piperd syz-executor.0 64988 262203 58211 0 3 0x4000080 fsleep syz-executor.0 77412 232684 0 0 3 0x14280 nfsidl nfsio 78009 120641 0 0 3 0x14280 nfsidl nfsio 43938 54886 0 0 3 0x14280 nfsidl nfsio 47748 65367 0 0 3 0x14280 nfsidl nfsio 92435 517091 0 0 3 0x14280 nfsidl nfsio 91208 202295 0 0 3 0x14280 nfsidl nfsio 37829 6800 0 0 3 0x14280 nfsidl nfsio 52244 408856 0 0 3 0x14280 nfsidl nfsio 26513 108717 0 0 3 0x14280 nfsidl nfsio 41967 245967 0 0 3 0x14280 nfsidl nfsio 60974 505654 0 0 3 0x14280 nfsidl nfsio 8693 371171 0 0 3 0x14280 nfsidl nfsio 38694 224238 0 0 3 0x14280 nfsidl nfsio 43113 285964 0 0 3 0x14280 nfsidl nfsio 26868 498133 0 0 3 0x14280 nfsidl nfsio 91365 173779 0 0 3 0x14280 nfsidl nfsio 52957 381312 0 0 3 0x14280 nfsidl nfsio 45712 385809 0 0 3 0x14280 nfsidl nfsio 87407 111832 0 0 3 0x14280 nfsidl nfsio 28044 236132 0 0 3 0x14280 nfsidl nfsio 58211 184957 50747 0 3 0x82 nanosleep syz-executor.0 63170 479353 0 0 3 0x14200 bored sosplice 50747 1567 34269 0 3 0x82 thrsleep syz-fuzzer 50747 90344 34269 0 3 0x4000082 thrsleep syz-fuzzer 50747 258333 34269 0 3 0x4000082 thrsleep syz-fuzzer 50747 274464 34269 0 3 0x4000082 thrsleep syz-fuzzer 50747 147458 34269 0 3 0x4000082 thrsleep syz-fuzzer 50747 285268 34269 0 3 0x4000082 thrsleep syz-fuzzer 50747 468132 34269 0 3 0x4000082 kqread syz-fuzzer 34269 368517 61845 0 3 0x10008a pause ksh 61845 355047 4012 0 3 0x92 select sshd 90025 402931 1 0 3 0x100083 ttyin getty 4012 30559 1 0 3 0x80 select sshd 23768 307557 66151 73 3 0x100090 kqread syslogd 66151 464888 1 0 3 0x100082 netio syslogd 5846 466324 1 77 2 0x100090 dhclient 30034 159237 1 0 3 0x80 poll dhclient 24618 260881 0 0 3 0x14200 bored smr 75836 361554 0 0 2 0x14200 zerothread 92692 467975 0 0 3 0x14200 aiodoned aiodoned 28628 66698 0 0 3 0x14200 syncer update 65868 337157 0 0 3 0x14200 cleaner cleaner 20108 452204 0 0 3 0x14200 reaper reaper 98609 242071 0 0 3 0x14200 pgdaemon pagedaemon 15778 66513 0 0 3 0x14200 bored crynlk 10233 479019 0 0 3 0x14200 bored crypto 35288 10915 0 0 3 0x40014200 acpi0 acpi0 14476 138818 0 0 3 0x14200 bored softnet 26318 183395 0 0 2 0x14200 systqmp 75392 285107 0 0 3 0x14200 bored systq 17223 58728 0 0 3 0x40014200 bored softclock 35511 204171 0 0 3 0x40014200 idle0 1 513662 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 9470 6332K 6655K 78643K 10878 0 pcb 13 8K 8K 78643K 55 0 rtable 108 6K 10K 78643K 443 0 ifaddr 58 13K 13K 78643K 130 0 counters 21 16K 16K 78643K 25 0 ioctlops 0 0K 4K 78643K 123 0 iov 0 0K 16K 78643K 25 0 mount 1 1K 1K 78643K 1 0 vnodes 1219 77K 77K 78643K 1351 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 1K 78643K 96 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 289 0 sigio 0 0K 0K 78643K 16 0 proc 49 38K 63K 78643K 462 0 subproc 23 1K 2K 78643K 68 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 16 0 in_multi 39 2K 2K 78643K 91 0 ether_multi 1 0K 0K 78643K 8 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 230 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 129 40K 48K 78643K 1583 0 UVM aobj 14 6K 6K 78643K 14 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 34 0 NDP 9 0K 0K 78643K 23 0 temp 79 3855K 3921K 78643K 7881 0 kqueue 3 4K 12K 78643K 17 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 6 1 0 1 1 0 8 0 rtpcb 88 35 0 33 1 0 1 1 0 8 0 rtentry 112 77 0 38 2 0 2 2 0 8 0 unpcb 120 99 0 91 1 0 1 1 0 8 0 syncache 272 4 0 4 1 1 0 1 0 8 0 tcpqe 32 56 0 56 1 1 0 1 0 8 0 tcpcb 592 80 0 72 2 0 2 2 0 8 1 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 2 0 1 1 0 1 1 0 8 0 inpcb 296 345 0 338 2 0 2 2 0 8 1 nd6 48 17 0 12 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 pfstscr 40 2 0 1 1 0 1 1 0 8 0 pfrktable 1344 64 0 58 2 0 2 2 0 8 1 pftag 88 10 0 8 1 0 1 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 112 4 0 2 1 0 1 1 0 8 0 pfstate 328 2 0 1 1 0 1 1 0 8 0 pfrule 1360 61 0 14 4 0 4 4 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 342 0 170 16 1 15 15 0 8 2 art_table 32 343 0 170 2 0 2 2 0 8 0 art_node 16 76 0 37 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 2 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 90 0 80 1 0 1 1 0 8 0 shmpl 112 11 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1756 0 360 88 0 88 88 0 8 0 ffsino 240 1756 0 360 83 0 83 83 0 8 0 nchpl 144 2326 0 737 60 0 60 60 0 8 0 uvmvnodes 72 1897 0 0 35 0 35 35 0 8 0 vnodes 208 1897 0 0 100 0 100 100 0 8 0 namei 1024 6546 0 6546 4 3 1 1 0 8 1 vcpupl 1984 2 0 0 1 0 1 1 0 8 0 vmpool 528 4 0 2 1 0 1 1 0 8 0 pfiaddrpl 120 56 0 18 2 0 2 2 0 8 0 scxspl 200 6950 0 6950 1 0 1 1 0 8 1 plimitpl 152 30 0 23 1 0 1 1 0 8 0 sigapl 424 490 0 441 6 0 6 6 0 8 0 futexpl 56 5158 0 5157 4 3 1 1 0 8 0 knotepl 112 105 0 87 1 0 1 1 0 8 0 kqueuepl 152 40 0 38 1 0 1 1 0 8 0 pipepl 272 101 0 89 1 0 1 1 0 8 0 fdescpl 432 455 0 441 2 0 2 2 0 8 0 filepl 120 2694 0 2602 4 0 4 4 0 8 0 lockfpl 104 76 0 75 1 0 1 1 0 8 0 lockfspl 48 28 0 27 1 0 1 1 0 8 0 sessionpl 120 19 0 9 1 0 1 1 0 8 0 pgrppl 48 23 0 13 1 0 1 1 0 8 0 ucredpl 96 322 0 315 1 0 1 1 0 8 0 zombiepl 144 442 0 441 1 0 1 1 0 8 0 processpl 944 490 0 441 8 1 7 7 0 8 0 procpl 632 795 0 738 6 0 6 6 0 8 1 sosppl 144 73 0 73 2 1 1 1 0 8 1 sockpl 400 481 0 464 4 1 3 3 0 8 1 mcl64k 65536 13 0 13 1 0 1 1 0 8 1 mcl16k 16384 2 0 2 2 1 1 1 0 8 1 mcl12k 12288 6 0 6 3 2 1 1 0 8 1 mcl9k 9216 2 0 2 1 0 1 1 0 8 1 mcl8k 8192 15 0 15 1 0 1 1 0 8 1 mcl4k 4096 45 0 45 3 2 1 1 0 8 1 mcl2k2 2112 4 0 4 1 0 1 1 0 8 1 mcl2k 2048 93301 0 93259 19 13 6 15 0 8 0 mtagpl 96 22 0 14 2 1 1 1 0 8 0 mbufpl 256 148927 0 148789 20 5 15 15 0 8 0 bufpl 280 3802 0 120 263 0 263 263 0 8 0 anonpl 16 63035 0 45788 78 3 75 78 0 107 5 amapchunkpl 152 2921 0 2719 17 7 10 15 0 158 1 amappl16 192 1980 0 1067 47 0 47 47 0 8 1 amappl15 184 9 0 7 1 0 1 1 0 8 0 amappl14 176 106 0 103 1 0 1 1 0 8 0 amappl13 168 40 0 37 1 0 1 1 0 8 0 amappl12 160 135 0 132 1 0 1 1 0 8 0 amappl11 152 59 0 49 1 0 1 1 0 8 0 amappl10 144 24 0 19 1 0 1 1 0 8 0 amappl9 136 346 0 344 1 0 1 1 0 8 0 amappl8 128 330 0 301 1 0 1 1 0 8 0 amappl7 120 123 0 110 1 0 1 1 0 8 0 amappl6 112 26 0 22 1 0 1 1 0 8 0 amappl5 104 512 0 501 1 0 1 1 0 8 0 amappl4 96 467 0 436 1 0 1 1 0 8 0 amappl3 88 233 0 222 1 0 1 1 0 8 0 amappl2 80 2656 0 2589 2 0 2 2 0 8 0 amappl1 72 19819 0 19383 23 14 9 17 0 8 0 amappl 80 1062 0 1007 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 13 0 0 1 0 1 1 0 8 0 uaddrrnd 24 459 0 443 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 459 0 443 1 0 1 1 0 8 0 vmmpekpl 168 6899 0 6869 2 0 2 2 0 8 0 vmmpepl 168 63644 0 61609 126 15 111 118 0 357 22 vmsppl 272 458 0 443 3 1 2 2 0 8 0 pdppl 4096 924 0 888 7 2 5 6 0 8 0 pvpl 32 191275 0 170926 186 4 182 185 0 265 17 pmappl 200 458 0 443 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 263 0 32 7 0 7 7 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace in_delmulti(fffffffefffdffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000af2e00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac7000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac7000) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000ac7000) 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(ffff80001e7a0c90) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806747ea90,7,fffffd806c3bfc60,ffff80001d6be9f8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd805767ef18,ffff80001d6be9f8) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd805767ef18,ffff80001d6be9f8) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd805767ef18,ffff80001d6be9f8) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd805767ef18,ffff80001d6be9f8) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d6be9f8) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d6be9f8,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff80001d6be9f8,19) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff80001d6be9f8,19) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff80001d6be9f8) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001e7a1110) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001e7a1110) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd4eb0, count: -17 ddb> machine ddbcpu 1 No such command ddb> trace in_delmulti(fffffffefffdffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000af2e00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac7000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac7000) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000ac7000) 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(ffff80001e7a0c90) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806747ea90,7,fffffd806c3bfc60,ffff80001d6be9f8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd805767ef18,ffff80001d6be9f8) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd805767ef18,ffff80001d6be9f8) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd805767ef18,ffff80001d6be9f8) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd805767ef18,ffff80001d6be9f8) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d6be9f8) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d6be9f8,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff80001d6be9f8,19) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff80001d6be9f8,19) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff80001d6be9f8) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001e7a1110) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001e7a1110) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd4eb0, count: -17