uvm_fault(0xffffffff82798f10, 0xfffffffc0000000b, 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(0xffffffff82798f10, 0xfffffffc0000000b, 0, 1) -> e in_delmulti(fffffffbffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff80001d79f140, count: 0 ddb> trace in_delmulti(fffffffbffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000af9100) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000afa800) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000afa800) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000afa800) 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(ffff80001d79f320) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd8060ca0410,7,fffffd806c3bf6c0,ffff80001d6be780) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd80573b9798,ffff80001d6be780) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80573b9798,ffff80001d6be780) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd80573b9798,ffff80001d6be780) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80573b9798,ffff80001d6be780) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d6be780) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d6be780,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff80001d6be780,19) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff80001d6be780,19) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff80001d6be780) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001d79f7a0) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001d79f7a0) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff06c0, count: -17 ddb> show registers rdi 0x2 rsi 0 rbp 0xffff80001d79f0f0 rbx 0 rdx 0 rcx 0x1 rax 0xffff80001d6be780 r8 0xffff800000af9100 r9 0xffffffff817c4993 rt_ifa_purge+0x153 r10 0x5 r11 0xd07199aef39b0bdd r12 0 r13 0x3 r14 0xfffffffbffffffff r15 0x1 rip 0xffffffff81b5242d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001d79f090 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> show proc PROC (syz-executor.0) pid=243299 stat=onproc flags process=a proc=2000 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6bec70,0xffff80001d6be518 process=0xffff80001d6c19e0 user=0xffff80001d79a000, vmspace=0xfffffd806bc0a330 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 15527 335654 20983 0 3 0x80 nanosleep syz-executor.1 15527 332603 20983 0 3 0x4000080 kqread syz-executor.1 15527 150758 20983 0 3 0x4000080 fsleep syz-executor.1 8038 378243 0 0 3 0x14200 bored sosplice 20983 59562 80284 0 3 0x82 nanosleep syz-executor.1 80284 96774 41659 0 3 0x82 thrsleep syz-fuzzer 80284 305807 41659 0 3 0x4000082 thrsleep syz-fuzzer 80284 230296 41659 0 3 0x4000082 thrsleep syz-fuzzer 80284 186885 41659 0 3 0x4000082 kqread syz-fuzzer 80284 259342 41659 0 3 0x4000082 thrsleep syz-fuzzer 80284 399846 41659 0 3 0x4000082 thrsleep syz-fuzzer 80284 243530 41659 0 3 0x4000082 thrsleep syz-fuzzer 41659 425431 26018 0 3 0x10008a pause ksh 26018 495473 23231 0 3 0x92 select sshd 78422 485895 1 0 3 0x100083 ttyin getty 23231 58186 1 0 3 0x80 select sshd 6446 501851 67759 73 3 0x100090 kqread syslogd 67759 213106 1 0 3 0x100082 netio syslogd 16857 166011 1 77 2 0x100090 dhclient 41696 303412 1 0 3 0x80 poll dhclient 91036 342860 0 0 3 0x14200 bored smr 66145 505250 0 0 3 0x14200 pgzero zerothread 80252 204005 0 0 3 0x14200 aiodoned aiodoned 23968 47864 0 0 3 0x14200 syncer update 86748 407093 0 0 3 0x14200 cleaner cleaner 5268 312907 0 0 3 0x14200 reaper reaper 64318 295127 0 0 3 0x14200 pgdaemon pagedaemon 88568 408999 0 0 3 0x14200 bored crynlk 93743 190424 0 0 3 0x14200 bored crypto 27558 60999 0 0 3 0x40014200 acpi0 acpi0 51107 180477 0 0 3 0x14200 bored softnet 86157 52452 0 0 2 0x14200 systqmp 87317 159598 0 0 3 0x14200 bored systq 5546 380811 0 0 3 0x40014200 bored softclock 3549 428092 0 0 3 0x40014200 idle0 1 409925 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 9482 6345K 6724K 78643K 11048 0 pcb 13 8K 8K 78643K 83 0 rtable 99 5K 8K 78643K 643 0 ifaddr 63 13K 14K 78643K 151 0 sysctl 2 0K 0K 78643K 2 0 counters 21 16K 16K 78643K 31 0 ioctlops 0 0K 4K 78643K 100 0 iov 0 0K 16K 78643K 44 0 mount 1 1K 1K 78643K 1 0 vnodes 1217 77K 77K 78643K 1385 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 8 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 1K 78643K 74 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 440 0 sigio 0 0K 0K 78643K 6 0 proc 49 38K 63K 78643K 427 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 30 0 in_multi 34 2K 2K 78643K 138 0 ether_multi 1 0K 0K 78643K 10 0 mrt 0 0K 0K 78643K 10 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 222 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 126 38K 39K 78643K 1871 0 UVM aobj 22 2K 2K 78643K 26 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 37 0 NDP 10 0K 0K 78643K 35 0 temp 102 3869K 3934K 78643K 7188 0 kqueue 3 4K 10K 78643K 14 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 7 1 0 1 1 0 8 0 rtpcb 88 278 0 276 1 0 1 1 0 8 0 rtentry 112 90 0 57 2 0 2 2 0 8 0 unpcb 120 219 0 207 1 0 1 1 0 8 0 syncache 272 6 0 6 2 2 0 1 0 8 0 tcpqe 32 184 0 184 2 2 0 1 0 8 0 tcpcb 592 102 0 97 3 2 1 2 0 8 0 ipq 40 1 0 1 1 1 0 1 0 8 0 ipqe 40 2 0 2 1 1 0 1 0 8 0 inpcb 296 749 0 741 3 1 2 2 0 8 0 rttmr 72 4 0 4 1 1 0 1 0 8 0 nd6 48 23 0 19 1 0 1 1 0 8 0 pkpcb 40 4 0 4 2 2 0 1 0 8 0 ppxss 1136 2 0 2 2 2 0 1 0 8 0 pfrktable 1344 24 0 21 1 0 1 1 0 8 0 pftag 88 6 0 4 1 0 1 1 0 8 0 pfrule 1360 6 0 2 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 417 0 230 16 3 13 15 0 8 0 art_table 32 418 0 230 2 0 2 2 0 8 0 art_node 16 88 0 53 1 0 1 1 0 8 0 sysvmsgpl 40 26 0 8 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 70 0 60 1 0 1 1 0 8 0 shmpl 112 23 0 4 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1949 0 553 88 0 88 88 0 8 0 ffsino 240 1949 0 553 83 0 83 83 0 8 0 nchpl 144 2739 0 1158 60 0 60 60 0 8 0 uvmvnodes 72 2110 0 0 39 0 39 39 0 8 0 vnodes 208 2110 0 0 112 0 112 112 0 8 0 namei 1024 7261 0 7261 2 1 1 1 0 8 1 vcpupl 1984 1 0 0 1 0 1 1 0 8 0 vmpool 528 3 0 2 1 0 1 1 0 8 0 pfiaddrpl 120 8 0 6 1 0 1 1 0 8 0 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 200 8493 0 8493 1 0 1 1 0 8 1 plimitpl 152 25 0 18 1 0 1 1 0 8 0 sigapl 424 624 0 595 4 0 4 4 0 8 0 futexpl 56 8654 0 8653 3 2 1 1 0 8 0 knotepl 112 86 0 68 1 0 1 1 0 8 0 kqueuepl 152 49 0 46 1 0 1 1 0 8 0 pipepl 272 129 0 118 2 1 1 2 0 8 0 fdescpl 432 609 0 595 2 0 2 2 0 8 0 filepl 120 3638 0 3545 4 0 4 4 0 8 0 lockfpl 104 102 0 101 1 0 1 1 0 8 0 lockfspl 48 37 0 36 1 0 1 1 0 8 0 sessionpl 120 18 0 8 1 0 1 1 0 8 0 pgrppl 48 22 0 12 1 0 1 1 0 8 0 ucredpl 96 306 0 299 1 0 1 1 0 8 0 zombiepl 144 596 0 595 1 0 1 1 0 8 0 processpl 944 624 0 595 4 0 4 4 0 8 0 procpl 632 1104 0 1067 4 0 4 4 0 8 0 sosppl 144 5 0 5 1 1 0 1 0 8 0 sockpl 400 1256 0 1234 5 2 3 4 0 8 0 mcl64k 65536 21 0 21 3 3 0 1 0 8 0 mcl16k 16384 5 0 5 3 3 0 1 0 8 0 mcl12k 12288 11 0 11 3 2 1 1 0 8 1 mcl9k 9216 5 0 5 1 1 0 1 0 8 0 mcl8k 8192 17 0 17 1 1 0 1 0 8 0 mcl4k 4096 47 0 47 4 3 1 1 0 8 1 mcl2k2 2112 1 0 1 1 0 1 1 0 8 1 mcl2k 2048 92557 0 92510 23 16 7 17 0 8 0 mtagpl 96 40 0 23 2 1 1 1 0 8 0 mbufpl 256 150104 0 149936 23 6 17 19 0 8 0 bufpl 280 4300 0 121 299 0 299 299 0 8 0 anonpl 16 86785 0 68946 100 18 82 98 0 107 0 amapchunkpl 152 3859 0 3679 24 14 10 22 0 158 2 amappl16 192 3411 0 2333 71 15 56 66 0 8 1 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 194 0 191 1 0 1 1 0 8 0 amappl13 168 238 0 233 1 0 1 1 0 8 0 amappl12 160 19 0 16 1 0 1 1 0 8 0 amappl11 152 49 0 39 1 0 1 1 0 8 0 amappl10 144 26 0 19 1 0 1 1 0 8 0 amappl9 136 370 0 367 1 0 1 1 0 8 0 amappl8 128 311 0 282 2 1 1 2 0 8 0 amappl7 120 110 0 97 1 0 1 1 0 8 0 amappl6 112 30 0 26 1 0 1 1 0 8 0 amappl5 104 539 0 527 1 0 1 1 0 8 0 amappl4 96 650 0 620 1 0 1 1 0 8 0 amappl3 88 321 0 312 1 0 1 1 0 8 0 amappl2 80 3981 0 3915 2 0 2 2 0 8 0 amappl1 72 22574 0 22147 23 14 9 17 0 8 0 amappl 80 1368 0 1312 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 25 0 4 1 0 1 1 0 8 0 uaddrrnd 24 612 0 597 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 612 0 597 1 0 1 1 0 8 0 vmmpekpl 168 7672 0 7650 2 0 2 2 0 8 0 vmmpepl 168 82112 0 79917 152 28 124 138 0 357 28 vmsppl 272 611 0 597 3 2 1 2 0 8 0 pdppl 4096 1230 0 1195 6 1 5 6 0 8 0 pvpl 32 241322 0 220458 230 24 206 230 0 265 18 pmappl 200 611 0 597 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 271 0 46 7 0 7 7 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace in_delmulti(fffffffbffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000af9100) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000afa800) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000afa800) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000afa800) 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(ffff80001d79f320) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd8060ca0410,7,fffffd806c3bf6c0,ffff80001d6be780) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd80573b9798,ffff80001d6be780) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80573b9798,ffff80001d6be780) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd80573b9798,ffff80001d6be780) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80573b9798,ffff80001d6be780) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d6be780) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d6be780,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff80001d6be780,19) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff80001d6be780,19) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff80001d6be780) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001d79f7a0) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001d79f7a0) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff06c0, count: -17 ddb> machine ddbcpu 1 No such command ddb> trace in_delmulti(fffffffbffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000af9100) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000afa800) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000afa800) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000afa800) 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(ffff80001d79f320) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd8060ca0410,7,fffffd806c3bf6c0,ffff80001d6be780) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd80573b9798,ffff80001d6be780) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80573b9798,ffff80001d6be780) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd80573b9798,ffff80001d6be780) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80573b9798,ffff80001d6be780) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d6be780) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d6be780,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff80001d6be780,19) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff80001d6be780,19) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff80001d6be780) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001d79f7a0) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001d79f7a0) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff06c0, count: -17