uvm_fault(0xfffffd806bc09000, 0x8c, 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(0xfffffd806bc09000, 0x8c, 0, 1) -> e in_delmulti(80) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff80001d76f510, count: 0 ddb> trace in_delmulti(80) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000ae5a00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac6800) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac6800) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000ac6800) 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(ffff80001d76f6f0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806b3a68f0,7,fffffd806c3bfae0,ffff80001d6c3880) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8057272c40,ffff80001d6c3880) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8057272c40,ffff80001d6c3880) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd8057272c40,ffff80001d6c3880) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8057272c40,ffff80001d6c3880) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d6c3880) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d6c3880,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff80001d6c3880,19) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff80001d6c3880,19) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff80001d6c3880) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001d76fb70) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001d76fb70) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffdcca0, count: -17 ddb> show registers rdi 0x2 rsi 0 rbp 0xffff80001d76f4c0 rbx 0 rdx 0x3 rcx 0x1 rax 0 r8 0xffffffff818ebc13 rt_ifa_purge+0x153 r9 0x5 r10 0x8fb5caf6adf4b19 r11 0xa48e962723dd11bb r12 0 r13 0x3 r14 0x80 r15 0x1 rip 0xffffffff81e46f2d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001d76f460 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> show proc PROC (syz-executor.0) pid=289818 stat=onproc flags process=a proc=2000 pri=32, usrpri=81, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6c3d60,0xffffffff827f1030 process=0xffff80001d7075d8 user=0xffff80001d76a000, vmspace=0xfffffd806bc09000 estcpu=31, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 79980 266843 0 0 3 0x14200 acct acct 80558 162102 0 0 3 0x14200 bored sosplice 20073 436275 13034 0 3 0x82 piperd syz-executor.1 13034 65724 63266 0 3 0x82 thrsleep syz-fuzzer 13034 478985 63266 0 3 0x4000082 nanosleep syz-fuzzer 13034 105905 63266 0 3 0x4000082 thrsleep syz-fuzzer 13034 283957 63266 0 3 0x4000082 thrsleep syz-fuzzer 13034 288783 63266 0 3 0x4000082 thrsleep syz-fuzzer 13034 445374 63266 0 2 0x4000002 syz-fuzzer 13034 440623 63266 0 3 0x4000082 thrsleep syz-fuzzer 13034 40410 63266 0 3 0x4000082 thrsleep syz-fuzzer 63266 435478 87305 0 3 0x10008a pause ksh 87305 175084 73796 0 3 0x92 select sshd 27143 253372 1 0 3 0x100083 ttyin getty 73796 405345 1 0 3 0x80 select sshd 42957 387590 14714 73 3 0x100010 ffs_fsync syslogd 14714 183539 1 0 3 0x100082 netio syslogd 12435 452493 1 77 2 0x100090 dhclient 42591 305455 1 0 3 0x80 poll dhclient 20048 293323 0 0 3 0x14200 bored smr 83575 377411 0 0 2 0x14200 zerothread 70859 155065 0 0 3 0x14200 aiodoned aiodoned 65826 220167 0 0 2 0x14200 update 83888 499848 0 0 3 0x14200 cleaner cleaner 63566 274243 0 0 3 0x14200 reaper reaper 29565 169610 0 0 3 0x14200 pgdaemon pagedaemon 72963 198369 0 0 3 0x14200 bored crynlk 82810 373525 0 0 3 0x14200 bored crypto 1214 389787 0 0 3 0x40014200 acpi0 acpi0 68102 267442 0 0 3 0x14200 bored softnet 65163 438749 0 0 2 0x14200 systqmp 33896 34916 0 0 3 0x14200 bored systq 63084 331937 0 0 3 0x40014200 bored softclock 99112 235485 0 0 3 0x40014200 idle0 1 427900 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 9486 6338K 6721K 78643K 11498 0 pcb 13 8K 8K 78643K 61 0 rtable 126 8K 11K 78643K 448 0 ifaddr 78 16K 18K 78643K 149 0 sysctl 2 0K 0K 78643K 2 0 counters 21 16K 16K 78643K 25 0 ioctlops 0 0K 4K 78643K 104 0 iov 0 0K 16K 78643K 51 0 mount 1 1K 1K 78643K 1 0 vnodes 1222 77K 77K 78643K 1497 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 140 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 4 9K 25K 78643K 468 0 sigio 0 0K 0K 78643K 9 0 proc 50 38K 63K 78643K 431 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 29 0 in_multi 78 3K 4K 78643K 152 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 55 254K 254K 78643K 55 0 exec 0 0K 1K 78643K 234 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 132 39K 40K 78643K 1961 0 UVM aobj 22 6K 6K 78643K 25 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 1K 78643K 36 0 NDP 10 0K 0K 78643K 30 0 temp 108 3867K 3931K 78643K 9306 0 kqueue 3 4K 12K 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 10 0 6 1 0 1 1 0 8 0 rtpcb 80 23 0 21 1 0 1 1 0 8 0 rtentry 112 77 0 34 2 0 2 2 0 8 0 unpcb 120 164 0 155 1 0 1 1 0 8 0 syncache 264 6 0 6 2 2 0 1 0 8 0 tcpqe 32 271 0 271 1 1 0 1 0 8 0 tcpcb 544 480 0 470 5 3 2 2 0 8 1 inpcb 296 747 0 740 7 5 2 2 0 8 1 nd6 48 21 0 13 1 0 1 1 0 8 0 pkpcb 40 6 0 6 3 3 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 69 0 59 4 3 1 2 0 8 0 pftag 88 9 0 8 1 0 1 1 0 8 0 pfrule 1360 25 0 17 1 0 1 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 259 0 50 15 1 14 14 0 8 0 art_table 32 261 0 50 2 0 2 2 0 8 0 art_node 16 76 0 33 1 0 1 1 0 8 0 sysvmsgpl 40 10 0 6 1 0 1 1 0 8 0 semapl 112 138 0 128 1 0 1 1 0 8 0 shmpl 112 22 0 3 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2046 0 647 88 0 88 88 0 8 0 ffsino 240 2046 0 647 83 0 83 83 0 8 0 nchpl 144 2962 0 1386 60 0 60 60 0 8 0 uvmvnodes 72 2326 0 0 43 0 43 43 0 8 0 vnodes 208 2326 0 0 123 0 123 123 0 8 0 namei 1024 8079 0 8079 5 4 1 1 0 8 1 vcpupl 1984 2 0 0 1 0 1 1 0 8 0 vmpool 528 6 0 4 2 1 1 1 0 8 0 pfiaddrpl 120 32 0 21 1 0 1 1 0 8 0 scxspl 192 8912 0 8911 5 4 1 1 0 8 0 plimitpl 152 37 0 30 1 0 1 1 0 8 0 sigapl 424 653 0 624 4 0 4 4 0 8 0 futexpl 56 9823 0 9823 4 3 1 1 0 8 1 knotepl 112 107 0 88 1 0 1 1 0 8 0 kqueuepl 144 66 0 64 1 0 1 1 0 8 0 pipepl 272 128 0 118 2 1 1 2 0 8 0 fdescpl 432 637 0 624 2 0 2 2 0 8 0 filepl 120 3831 0 3746 7 3 4 5 0 8 1 lockfpl 104 87 0 86 1 0 1 1 0 8 0 lockfspl 48 34 0 33 1 0 1 1 0 8 0 sessionpl 112 18 0 8 1 0 1 1 0 8 0 pgrppl 48 24 0 14 1 0 1 1 0 8 0 ucredpl 96 400 0 393 1 0 1 1 0 8 0 zombiepl 144 625 0 624 4 3 1 1 0 8 0 processpl 928 653 0 624 4 0 4 4 0 8 0 procpl 624 1202 0 1166 5 1 4 4 0 8 0 sockpl 400 944 0 926 7 4 3 4 0 8 0 mcl64k 65536 17 0 17 5 4 1 1 0 8 1 mcl16k 16384 3 0 3 2 2 0 1 0 8 0 mcl12k 12288 6 0 6 4 4 0 1 0 8 0 mcl9k 9216 8 0 8 5 4 1 1 0 8 1 mcl8k 8192 21 0 21 6 5 1 1 0 8 1 mcl4k 4096 79 0 79 7 6 1 1 0 8 1 mcl2k2 2112 3 0 3 3 2 1 1 0 8 1 mcl2k 2048 95708 0 95654 26 18 8 18 0 8 0 mtagpl 96 80 0 76 3 1 2 2 0 8 1 mbufpl 256 153811 0 153697 28 7 21 21 0 8 5 bufpl 280 4235 0 126 294 0 294 294 0 8 0 anonpl 16 78394 0 60583 93 19 74 88 0 107 2 amapchunkpl 152 2527 0 2380 10 3 7 7 0 158 1 amappl16 192 2834 0 1828 65 14 51 62 0 8 0 amappl15 184 328 0 326 1 0 1 1 0 8 0 amappl14 176 30 0 26 1 0 1 1 0 8 0 amappl13 168 42 0 39 1 0 1 1 0 8 0 amappl12 160 12 0 10 1 0 1 1 0 8 0 amappl11 152 49 0 40 1 0 1 1 0 8 0 amappl10 144 419 0 413 1 0 1 1 0 8 0 amappl9 136 377 0 375 1 0 1 1 0 8 0 amappl8 128 365 0 319 2 0 2 2 0 8 0 amappl7 120 518 0 503 1 0 1 1 0 8 0 amappl6 112 22 0 18 1 0 1 1 0 8 0 amappl5 104 595 0 583 1 0 1 1 0 8 0 amappl4 96 439 0 410 1 0 1 1 0 8 0 amappl3 88 110 0 104 1 0 1 1 0 8 0 amappl2 80 4209 0 4151 2 0 2 2 0 8 0 amappl1 72 23407 0 23014 24 15 9 17 0 8 0 amappl 80 1443 0 1401 2 0 2 2 0 84 1 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 24 0 3 1 0 1 1 0 8 0 uaddrrnd 24 643 0 628 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 643 0 628 1 0 1 1 0 8 0 vmmpekpl 168 7846 0 7815 2 0 2 2 0 8 0 vmmpepl 168 84932 0 82934 177 83 94 128 0 357 3 vmsppl 272 642 0 628 4 2 2 2 0 8 1 pdppl 4096 1292 0 1258 6 1 5 6 0 8 0 pvpl 32 229100 0 208375 227 28 199 213 0 265 30 pmappl 200 642 0 628 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 302 0 61 7 0 7 7 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace in_delmulti(80) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000ae5a00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac6800) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac6800) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000ac6800) 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(ffff80001d76f6f0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806b3a68f0,7,fffffd806c3bfae0,ffff80001d6c3880) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8057272c40,ffff80001d6c3880) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8057272c40,ffff80001d6c3880) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd8057272c40,ffff80001d6c3880) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8057272c40,ffff80001d6c3880) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d6c3880) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d6c3880,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff80001d6c3880,19) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff80001d6c3880,19) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff80001d6c3880) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001d76fb70) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001d76fb70) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffdcca0, count: -17 ddb> machine ddbcpu 1 No such command ddb> trace in_delmulti(80) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000ae5a00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac6800) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac6800) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000ac6800) 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(ffff80001d76f6f0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806b3a68f0,7,fffffd806c3bfae0,ffff80001d6c3880) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8057272c40,ffff80001d6c3880) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8057272c40,ffff80001d6c3880) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd8057272c40,ffff80001d6c3880) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8057272c40,ffff80001d6c3880) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d6c3880) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d6c3880,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff80001d6c3880,19) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff80001d6c3880,19) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff80001d6c3880) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001d76fb70) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001d76fb70) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffdcca0, count: -17