uvm_fault(0xffffffff82795140, 0xfffffeffffffc00b, 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, 0xfffffeffffffc00b, 0, 1) -> e in_delmulti(fffffeffffffbfff) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff80001d79d140, count: 0 ddb> trace in_delmulti(fffffeffffffbfff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000ad8c00) 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(5d01,7) at tun_dev_close+0x160 sys/net/if_tun.c:477 spec_close(ffff80001d79d320) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd805dc7eb60,7,fffffd806c3bfba0,ffff80001d79e298) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd80574f6c40,ffff80001d79e298) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80574f6c40,ffff80001d79e298) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd80574f6c40,ffff80001d79e298) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80574f6c40,ffff80001d79e298) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d79e298) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d79e298,0,0,3) at exit1+0x32c sys/kern/kern_exit.c:197 single_thread_check(ffff80001d79e298,0) at single_thread_check+0x146 sys/kern/kern_sig.c:1927 single_thread_set(ffff80001d79e298,3,0) at single_thread_set+0x4b sys/kern/kern_sig.c:1958 exit1(ffff80001d79e298,0,19,1) at exit1+0x97 sys/kern/kern_exit.c:138 postsig(ffff80001d79e298,19) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff80001d79e298,19) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff80001d79e298) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001d79d910) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001d79d910) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc03e0, count: -20 ddb> show registers rdi 0x2 rsi 0 rbp 0xffff80001d79d0f0 rbx 0 rdx 0x3 rcx 0x1 rax 0 r8 0xffffffff818ebc13 rt_ifa_purge+0x153 r9 0x5 r10 0x4b5e03e78a4b2363 r11 0x4bba346d6133e0fb r12 0 r13 0x3 r14 0xfffffeffffffbfff r15 0x1 rip 0xffffffff81e46f2d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001d79d090 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> show proc PROC (syz-executor.1) pid=274248 stat=onproc flags process=1008 proc=82000 pri=32, usrpri=82, nice=20 forw=0xffffffffffffffff, list=0xffff80001d79e508,0xffffffff827f1030 process=0xffff80001e7b3250 user=0xffff80001d798000, vmspace=0xfffffd8053641890 estcpu=36, cpticks=3, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 47093 377050 0 0 3 0x14280 nfsidl nfsio 25080 459979 0 0 3 0x14280 nfsidl nfsio 77706 274310 0 0 3 0x14280 nfsidl nfsio 47549 337097 0 0 3 0x14280 nfsidl nfsio 88051 185181 0 0 3 0x14280 nfsidl nfsio 326 184022 0 0 3 0x14280 nfsidl nfsio 52488 454454 0 0 3 0x14280 nfsidl nfsio 36417 18896 0 0 3 0x14280 nfsidl nfsio 22668 186960 0 0 3 0x14280 nfsidl nfsio 95681 353711 0 0 3 0x14280 nfsidl nfsio 68324 383266 0 0 3 0x14280 nfsidl nfsio 86565 90233 0 0 3 0x14280 nfsidl nfsio 86182 520664 0 0 3 0x14280 nfsidl nfsio 48645 116320 0 0 3 0x14280 nfsidl nfsio 62547 329184 0 0 3 0x14280 nfsidl nfsio 53920 405393 0 0 3 0x14280 nfsidl nfsio 89486 141502 0 0 3 0x14280 nfsidl nfsio 71088 515098 0 0 3 0x14280 nfsidl nfsio 96825 184462 0 0 3 0x14280 nfsidl nfsio 983 246037 0 0 3 0x14280 nfsidl nfsio 78326 486963 0 0 3 0x14200 bored sosplice 88342 15934 35555 0 3 0x82 piperd syz-executor.0 35555 446285 77003 0 3 0x82 thrsleep syz-fuzzer 35555 85282 77003 0 3 0x4000082 nanosleep syz-fuzzer 35555 249583 77003 0 2 0x4000002 syz-fuzzer 35555 493220 77003 0 3 0x4000082 thrsleep syz-fuzzer 35555 276344 77003 0 3 0x4000082 thrsleep syz-fuzzer 35555 494498 77003 0 3 0x4000082 thrsleep syz-fuzzer 35555 406468 77003 0 3 0x4000082 thrsleep syz-fuzzer 35555 294 77003 0 3 0x4000082 thrsleep syz-fuzzer 77003 271677 47216 0 3 0x10008a pause ksh 47216 434008 61002 0 3 0x92 select sshd 828 96680 1 0 3 0x100083 ttyin getty 61002 470254 1 0 3 0x80 select sshd 242 176504 4068 73 3 0x100010 biowait syslogd 4068 353618 1 0 3 0x100082 netio syslogd 32332 245815 1 77 3 0x100090 poll dhclient 49209 45855 1 0 3 0x80 poll dhclient 9134 1220 0 0 3 0x14200 bored smr 97816 400528 0 0 2 0x14200 zerothread 65853 29417 0 0 3 0x14200 aiodoned aiodoned 58346 191111 0 0 3 0x14200 syncer update 90660 66171 0 0 3 0x14200 cleaner cleaner 55192 121697 0 0 3 0x14200 reaper reaper 77320 14682 0 0 3 0x14200 pgdaemon pagedaemon 98643 351809 0 0 3 0x14200 bored crynlk 67157 180015 0 0 3 0x14200 bored crypto 78730 443663 0 0 3 0x40014200 acpi0 acpi0 3876 423462 0 0 3 0x14200 bored softnet 95354 507238 0 0 3 0x14200 bored systqmp 39139 279279 0 0 3 0x14200 bored systq 60758 97574 0 0 3 0x40014200 bored softclock 22724 123541 0 0 3 0x40014200 idle0 1 150716 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 9487 6354K 6600K 78643K 11055 0 pcb 13 8K 8K 78643K 57 0 rtable 121 6K 7K 78643K 424 0 ifaddr 68 14K 14K 78643K 154 0 sysctl 2 0K 0K 78643K 2 0 counters 21 16K 16K 78643K 24 0 ioctlops 0 0K 4K 78643K 84 0 iov 0 0K 12K 78643K 54 0 mount 1 1K 1K 78643K 1 0 vnodes 1219 77K 77K 78643K 1395 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 5 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 94 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 4 9K 25K 78643K 453 0 sigio 0 0K 0K 78643K 3 0 proc 50 38K 63K 78643K 378 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 25 0 in_multi 40 2K 2K 78643K 58 0 ether_multi 1 0K 0K 78643K 6 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 211 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 121 55K 75K 78643K 2150 0 UVM aobj 10 2K 2K 78643K 18 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 1K 78643K 33 0 NDP 10 0K 0K 78643K 18 0 temp 101 3862K 3926K 78643K 5603 0 kqueue 3 4K 12K 78643K 19 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 7 0 1 1 0 1 1 0 8 0 rtpcb 80 33 0 31 1 0 1 1 0 8 0 rtentry 112 52 0 7 2 0 2 2 0 8 0 unpcb 120 259 0 251 1 0 1 1 0 8 0 syncache 264 6 0 6 2 2 0 1 0 8 0 tcpqe 32 78 0 78 1 1 0 1 0 8 0 tcpcb 544 406 0 400 1 0 1 1 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 296 586 0 579 8 7 1 2 0 8 0 nd6 48 9 0 2 1 0 1 1 0 8 0 pkpcb 40 6 0 6 2 2 0 1 0 8 0 ppxss 1136 1 0 1 1 1 0 1 0 8 0 pfosfp 40 1 0 0 1 0 1 1 0 8 0 pfosfpen 112 1 0 0 1 0 1 1 0 8 0 pfrktable 1344 88 0 83 5 4 1 1 0 8 0 pftag 88 17 0 16 3 2 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 20 0 12 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 196 0 3 13 0 13 13 0 8 0 art_table 32 197 0 3 2 0 2 2 0 8 0 art_node 16 51 0 10 1 0 1 1 0 8 0 sysvmsgpl 40 10 0 6 1 0 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 88 0 78 1 0 1 1 0 8 0 shmpl 112 15 0 8 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1979 0 581 88 0 88 88 0 8 0 ffsino 240 1979 0 581 83 0 83 83 0 8 0 nchpl 144 2797 0 1193 60 0 60 60 0 8 0 uvmvnodes 72 2143 0 0 39 0 39 39 0 8 0 vnodes 208 2143 0 0 113 0 113 113 0 8 0 namei 1024 7298 0 7298 3 2 1 1 0 8 1 vcpupl 1984 4 0 0 1 0 1 1 0 8 0 vmpool 528 9 0 5 1 0 1 1 0 8 0 pfiaddrpl 120 28 0 22 3 2 1 1 0 8 0 scxspl 192 8748 0 8747 3 2 1 1 0 8 0 plimitpl 152 44 0 37 1 0 1 1 0 8 0 sigapl 424 660 0 612 6 0 6 6 0 8 0 futexpl 56 9671 0 9671 3 2 1 1 0 8 1 knotepl 112 91 0 72 1 0 1 1 0 8 0 kqueuepl 144 210 0 207 1 0 1 1 0 8 0 pipepl 272 125 0 115 2 1 1 2 0 8 0 fdescpl 432 625 0 612 2 0 2 2 0 8 0 filepl 120 3720 0 3637 6 2 4 4 0 8 1 lockfpl 104 100 0 99 1 0 1 1 0 8 0 lockfspl 48 37 0 36 1 0 1 1 0 8 0 sessionpl 112 17 0 7 1 0 1 1 0 8 0 pgrppl 48 17 0 7 1 0 1 1 0 8 0 ucredpl 96 354 0 347 1 0 1 1 0 8 0 zombiepl 144 613 0 611 2 1 1 1 0 8 0 processpl 928 660 0 611 7 0 7 7 0 8 0 procpl 624 1457 0 1401 6 1 5 5 0 8 0 sosppl 128 5 0 5 2 2 0 1 0 8 0 sockpl 400 926 0 909 9 6 3 4 0 8 1 mcl64k 65536 8 0 8 4 4 0 1 0 8 0 mcl12k 12288 12 0 12 7 7 0 1 0 8 0 mcl9k 9216 3 0 3 3 3 0 1 0 8 0 mcl8k 8192 15 0 15 6 6 0 1 0 8 0 mcl4k 4096 41 0 41 11 10 1 1 0 8 1 mcl2k2 2112 2 0 2 2 2 0 1 0 8 0 mcl2k 2048 95240 0 95193 16 9 7 13 0 8 0 mtagpl 96 43 0 43 2 1 1 1 0 8 1 mbufpl 256 152255 0 152177 14 2 12 12 0 8 0 bufpl 280 4378 0 125 304 0 304 304 0 8 0 anonpl 16 91944 0 74699 108 23 85 85 0 107 15 amapchunkpl 152 3666 0 3540 28 22 6 19 0 158 0 amappl16 192 3787 0 2827 76 20 56 60 0 8 7 amappl15 184 406 0 404 1 0 1 1 0 8 0 amappl14 176 25 0 21 1 0 1 1 0 8 0 amappl13 168 27 0 24 1 0 1 1 0 8 0 amappl12 160 22 0 20 2 1 1 1 0 8 0 amappl11 152 51 0 41 1 0 1 1 0 8 0 amappl10 144 421 0 411 1 0 1 1 0 8 0 amappl9 136 259 0 257 1 0 1 1 0 8 0 amappl8 128 323 0 287 2 0 2 2 0 8 0 amappl7 120 108 0 95 1 0 1 1 0 8 0 amappl6 112 21 0 19 1 0 1 1 0 8 0 amappl5 104 807 0 796 1 0 1 1 0 8 0 amappl4 96 420 0 391 1 0 1 1 0 8 0 amappl3 88 119 0 114 1 0 1 1 0 8 0 amappl2 80 4596 0 4532 2 0 2 2 0 8 0 amappl1 72 24862 0 24456 23 13 10 17 0 8 0 amappl 80 1666 0 1625 1 0 1 1 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 17 0 8 1 0 1 1 0 8 0 uaddrrnd 24 634 0 617 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 634 0 617 1 0 1 1 0 8 0 vmmpekpl 168 8255 0 8221 3 1 2 2 0 8 0 vmmpepl 168 86273 0 84290 142 42 100 111 0 357 11 vmsppl 272 633 0 617 3 1 2 2 0 8 0 pdppl 4096 1274 0 1238 8 3 5 6 0 8 0 pvpl 32 267389 0 247081 278 74 204 204 0 265 39 pmappl 200 633 0 617 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 274 0 47 7 0 7 7 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace in_delmulti(fffffeffffffbfff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000ad8c00) 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(5d01,7) at tun_dev_close+0x160 sys/net/if_tun.c:477 spec_close(ffff80001d79d320) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd805dc7eb60,7,fffffd806c3bfba0,ffff80001d79e298) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd80574f6c40,ffff80001d79e298) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80574f6c40,ffff80001d79e298) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd80574f6c40,ffff80001d79e298) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80574f6c40,ffff80001d79e298) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d79e298) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d79e298,0,0,3) at exit1+0x32c sys/kern/kern_exit.c:197 single_thread_check(ffff80001d79e298,0) at single_thread_check+0x146 sys/kern/kern_sig.c:1927 single_thread_set(ffff80001d79e298,3,0) at single_thread_set+0x4b sys/kern/kern_sig.c:1958 exit1(ffff80001d79e298,0,19,1) at exit1+0x97 sys/kern/kern_exit.c:138 postsig(ffff80001d79e298,19) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff80001d79e298,19) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff80001d79e298) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001d79d910) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001d79d910) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc03e0, count: -20 ddb> machine ddbcpu 1 No such command ddb> trace in_delmulti(fffffeffffffbfff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000ad8c00) 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(5d01,7) at tun_dev_close+0x160 sys/net/if_tun.c:477 spec_close(ffff80001d79d320) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd805dc7eb60,7,fffffd806c3bfba0,ffff80001d79e298) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd80574f6c40,ffff80001d79e298) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80574f6c40,ffff80001d79e298) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd80574f6c40,ffff80001d79e298) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80574f6c40,ffff80001d79e298) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d79e298) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d79e298,0,0,3) at exit1+0x32c sys/kern/kern_exit.c:197 single_thread_check(ffff80001d79e298,0) at single_thread_check+0x146 sys/kern/kern_sig.c:1927 single_thread_set(ffff80001d79e298,3,0) at single_thread_set+0x4b sys/kern/kern_sig.c:1958 exit1(ffff80001d79e298,0,19,1) at exit1+0x97 sys/kern/kern_exit.c:138 postsig(ffff80001d79e298,19) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff80001d79e298,19) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff80001d79e298) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001d79d910) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001d79d910) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc03e0, count: -20