uvm_fault(0xfffffd806bc09110, 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(0xfffffd806bc09110, 0x3fff7ee000b, 0, 1) -> e in_delmulti(3fff7edffff) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff80001e7b4dd0, count: 0 ddb> trace in_delmulti(3fff7edffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b1a700) 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(ffff80001e7b4fb0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806b7c9b60,7,fffffd806c3bf840,ffff80001d6aa118) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd805754dda8,ffff80001d6aa118) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd805754dda8,ffff80001d6aa118) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd805754dda8,ffff80001d6aa118) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd805754dda8,ffff80001d6aa118) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d6aa118) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d6aa118,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff80001d6aa118,19) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff80001d6aa118,19) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff80001d6aa118) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001e7b5430) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001e7b5430) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffed8d0, count: -17 ddb> show registers rdi 0x2 rsi 0 rbp 0xffff80001e7b4d80 rbx 0 rdx 0x3 rcx 0x1 rax 0 r8 0xffffffff818ebc13 rt_ifa_purge+0x153 r9 0x5 r10 0x138517ee58dc3534 r11 0xe78ac878c4e0260 r12 0 r13 0x3 r14 0x3fff7edffff r15 0x1 rip 0xffffffff81e46f2d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001e7b4d20 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> show proc PROC (syz-executor.1) pid=336748 stat=onproc flags process=a proc=2000 pri=32, usrpri=72, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6a9008,0xffff80001d6a9768 process=0xffff80001d6c4e90 user=0xffff80001e7b0000, vmspace=0xfffffd806bc09110 estcpu=36, cpticks=0, pctcpu=0.1 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 55215 332479 11352 0 3 0x3000 suspend syz-executor.0 55215 128390 11352 0 2 0x4081000 syz-executor.0 63414 191295 0 0 3 0x14200 bored sosplice 11352 487818 51540 0 3 0x82 nanosleep syz-executor.0 51540 336395 11207 0 3 0x82 kqread syz-fuzzer 51540 450752 11207 0 2 0x4000082 syz-fuzzer 51540 293851 11207 0 2 0x4000002 syz-fuzzer 51540 241595 11207 0 3 0x4000082 thrsleep syz-fuzzer 51540 167618 11207 0 3 0x4000082 thrsleep syz-fuzzer 51540 416421 11207 0 3 0x4000082 thrsleep syz-fuzzer 51540 248595 11207 0 3 0x4000082 thrsleep syz-fuzzer 51540 248786 11207 0 3 0x4000082 thrsleep syz-fuzzer 51540 784 11207 0 3 0x4000082 thrsleep syz-fuzzer 11207 178310 77473 0 3 0x10008a pause ksh 77473 382456 61964 0 3 0x92 select sshd 33951 268140 1 0 3 0x100083 ttyin getty 61964 498765 1 0 3 0x80 select sshd 49938 465007 67125 73 3 0x100090 kqread syslogd 67125 237517 1 0 3 0x100082 netio syslogd 82646 319786 1 77 2 0x100090 dhclient 11370 35583 1 0 3 0x80 poll dhclient 92444 121211 0 0 3 0x14200 bored smr 21826 315336 0 0 2 0x14200 zerothread 21103 85368 0 0 3 0x14200 aiodoned aiodoned 24181 231240 0 0 3 0x14200 syncer update 48357 390891 0 0 3 0x14200 cleaner cleaner 28525 287210 0 0 3 0x14200 reaper reaper 73234 195795 0 0 3 0x14200 pgdaemon pagedaemon 62552 95772 0 0 3 0x14200 bored crynlk 82878 508505 0 0 3 0x14200 bored crypto 84026 516651 0 0 3 0x40014200 acpi0 acpi0 11937 389495 0 0 3 0x14200 bored softnet 92332 386163 0 0 2 0x14200 systqmp 46834 502759 0 0 3 0x14200 bored systq 66219 52134 0 0 3 0x40014200 bored softclock 93403 281662 0 0 3 0x40014200 idle0 1 468253 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 9474 6341K 6599K 78643K 10794 0 pcb 13 8K 8K 78643K 69 0 rtable 82 3K 8K 78643K 340 0 ifaddr 59 13K 13K 78643K 119 0 counters 21 16K 16K 78643K 28 0 ioctlops 0 0K 4K 78643K 45 0 iov 0 0K 12K 78643K 28 0 mount 1 1K 1K 78643K 1 0 vnodes 1217 77K 77K 78643K 1291 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 1K 1K 78643K 62 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 287 0 sigio 0 0K 0K 78643K 4 0 proc 50 38K 54K 78643K 374 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 10 0 in_multi 54 2K 2K 78643K 97 0 ether_multi 1 0K 0K 78643K 5 0 mrt 0 0K 0K 78643K 3 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 203 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 125 22K 43K 78643K 1517 0 UVM aobj 8 2K 3K 78643K 13 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 32 0 NDP 8 0K 0K 78643K 22 0 temp 96 3853K 3925K 78643K 13184 0 kqueue 3 4K 8K 78643K 8 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 9 0 4 1 0 1 1 0 8 0 rtpcb 80 21 0 19 1 0 1 1 0 8 0 rtentry 112 61 0 31 2 0 2 2 0 8 0 unpcb 120 175 0 165 1 0 1 1 0 8 0 syncache 264 6 0 6 2 2 0 1 0 8 0 tcpqe 32 145 0 145 1 1 0 1 0 8 0 tcpcb 544 110 0 105 3 1 2 2 0 8 1 inpcb 296 562 0 552 2 0 2 2 0 8 0 nd6 48 11 0 7 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 ppxss 1136 1 0 1 1 1 0 1 0 8 0 pfrktable 1344 25 0 24 1 0 1 1 0 8 0 pftag 88 5 0 4 2 1 1 1 0 8 0 pfqueue 264 2 0 2 1 0 1 1 0 8 1 pfrule 1360 10 0 8 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 252 0 87 13 1 12 13 0 8 0 art_table 32 253 0 87 2 0 2 2 0 8 0 art_node 16 60 0 31 1 0 1 1 0 8 0 sysvmsgpl 40 10 0 2 1 0 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 46 0 36 1 0 1 1 0 8 0 shmpl 112 10 0 5 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1749 0 351 88 0 88 88 0 8 0 ffsino 240 1749 0 351 83 0 83 83 0 8 0 nchpl 144 2309 0 706 60 0 60 60 0 8 0 uvmvnodes 72 1840 0 0 34 0 34 34 0 8 0 vnodes 208 1840 0 0 97 0 97 97 0 8 0 namei 1024 5930 0 5930 1 0 1 1 0 8 1 vmpool 528 3 0 3 2 1 1 1 0 8 1 pfiaddrpl 120 6 0 6 1 1 0 1 0 8 0 scxspl 192 7455 0 7455 1 0 1 1 0 8 1 plimitpl 152 42 0 33 1 0 1 1 0 8 0 sigapl 424 474 0 445 4 0 4 4 0 8 0 futexpl 56 5322 0 5322 1 0 1 1 0 8 1 knotepl 112 67 0 50 1 0 1 1 0 8 0 kqueuepl 144 30 0 27 1 0 1 1 0 8 0 pipepl 272 191 0 182 1 0 1 1 0 8 0 fdescpl 432 459 0 445 2 0 2 2 0 8 0 filepl 120 2703 0 2615 4 0 4 4 0 8 0 lockfpl 104 48 0 47 1 0 1 1 0 8 0 lockfspl 48 17 0 16 1 0 1 1 0 8 0 sessionpl 112 17 0 7 1 0 1 1 0 8 0 pgrppl 48 21 0 11 1 0 1 1 0 8 0 ucredpl 96 183 0 176 1 0 1 1 0 8 0 zombiepl 144 447 0 445 1 0 1 1 0 8 0 processpl 928 474 0 445 4 0 4 4 0 8 0 procpl 624 815 0 777 4 0 4 4 0 8 0 sosppl 128 2 0 2 1 0 1 1 0 8 1 sockpl 400 760 0 740 5 1 4 4 0 8 1 mcl64k 65536 9 0 9 2 1 1 1 0 8 1 mcl16k 16384 2 0 2 2 1 1 1 0 8 1 mcl12k 12288 8 0 8 2 1 1 1 0 8 1 mcl9k 9216 5 0 5 2 1 1 1 0 8 1 mcl8k 8192 14 0 14 2 1 1 1 0 8 1 mcl4k 4096 26 0 24 2 1 1 1 0 8 0 mcl2k 2048 91249 0 91198 16 9 7 15 0 8 0 mtagpl 96 24 0 13 2 1 1 1 0 8 0 mbufpl 256 145783 0 145640 16 4 12 12 0 8 1 bufpl 280 4129 0 127 286 0 286 286 0 8 0 anonpl 16 60754 0 43655 86 3 83 84 0 107 14 amapchunkpl 152 2647 0 2515 26 6 20 20 0 158 12 amappl16 192 2323 0 1361 58 4 54 58 0 8 5 amappl15 184 9 0 7 1 0 1 1 0 8 0 amappl14 176 153 0 148 1 0 1 1 0 8 0 amappl13 168 26 0 23 1 0 1 1 0 8 0 amappl12 160 16 0 9 1 0 1 1 0 8 0 amappl11 152 174 0 163 1 0 1 1 0 8 0 amappl10 144 10 0 7 1 0 1 1 0 8 0 amappl9 136 476 0 474 1 0 1 1 0 8 0 amappl8 128 460 0 414 2 0 2 2 0 8 0 amappl7 120 107 0 95 1 0 1 1 0 8 0 amappl6 112 24 0 20 1 0 1 1 0 8 0 amappl5 104 306 0 295 1 0 1 1 0 8 0 amappl4 96 557 0 526 1 0 1 1 0 8 0 amappl3 88 248 0 240 1 0 1 1 0 8 0 amappl2 80 2816 0 2753 2 0 2 2 0 8 0 amappl1 72 19260 0 18831 23 14 9 17 0 8 0 amappl 80 1037 0 996 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 12 0 5 1 0 1 1 0 8 0 uaddrrnd 24 462 0 448 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 462 0 448 1 0 1 1 0 8 0 vmmpekpl 168 7317 0 7288 2 0 2 2 0 8 0 vmmpepl 168 63541 0 61454 123 24 99 118 0 357 7 vmsppl 272 461 0 448 3 1 2 2 0 8 1 pdppl 4096 930 0 896 6 1 5 6 0 8 0 pvpl 32 187785 0 166704 197 1 196 197 0 265 25 pmappl 200 461 0 448 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 254 0 24 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(ffff800000b1a700) 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(ffff80001e7b4fb0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806b7c9b60,7,fffffd806c3bf840,ffff80001d6aa118) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd805754dda8,ffff80001d6aa118) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd805754dda8,ffff80001d6aa118) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd805754dda8,ffff80001d6aa118) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd805754dda8,ffff80001d6aa118) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d6aa118) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d6aa118,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff80001d6aa118,19) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff80001d6aa118,19) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff80001d6aa118) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001e7b5430) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001e7b5430) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffed8d0, 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(ffff800000b1a700) 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(ffff80001e7b4fb0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806b7c9b60,7,fffffd806c3bf840,ffff80001d6aa118) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd805754dda8,ffff80001d6aa118) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd805754dda8,ffff80001d6aa118) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd805754dda8,ffff80001d6aa118) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd805754dda8,ffff80001d6aa118) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d6aa118) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d6aa118,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff80001d6aa118,19) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff80001d6aa118,19) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff80001d6aa118) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001e7b5430) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001e7b5430) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffed8d0, count: -17