uvm_fault(0xfffffd806bc09220, 0x2f, 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(0xfffffd806bc09220, 0x2f, 0, 1) -> e in_delmulti(23) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff80001d786c70, count: 0 ddb> trace in_delmulti(23) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000ae8400) 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(ffff80001d786e50) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd805e5aaa90,7,fffffd806c3bfc60,ffff80001d6aa868) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8057244b50,ffff80001d6aa868) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8057244b50,ffff80001d6aa868) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd8057244b50,ffff80001d6aa868) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8057244b50,ffff80001d6aa868) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d6aa868) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d6aa868,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff80001d6aa868,19) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff80001d6aa868,19) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff80001d6aa868) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001d7872d0) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001d7872d0) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbe400, count: -17 ddb> show registers rdi 0x2 rsi 0 rbp 0xffff80001d786c20 rbx 0 rdx 0x3 rcx 0x1 rax 0 r8 0xffffffff818ebc13 rt_ifa_purge+0x153 r9 0x5 r10 0xb382168a4d0ce22b r11 0x277620e2541f6189 r12 0 r13 0x3 r14 0x23 r15 0x1 rip 0xffffffff81e46f2d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001d786bc0 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> show proc PROC (syz-executor.1) pid=33808 stat=onproc flags process=a proc=2000 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6a94e8,0xffff80001d6a9768 process=0xffff80001d6c4e90 user=0xffff80001d782000, vmspace=0xfffffd806bc09220 estcpu=0, cpticks=0, pctcpu=0.2 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 89155 485330 18936 0 2 0 syz-executor.0 89155 330481 18936 0 2 0x4000000 syz-executor.0 18936 44762 62596 0 3 0x82 nanosleep syz-executor.0 62596 331182 12860 0 3 0x82 thrsleep syz-fuzzer 62596 127662 12860 0 3 0x4000082 thrsleep syz-fuzzer 62596 292943 12860 0 3 0x4000082 thrsleep syz-fuzzer 62596 385195 12860 0 3 0x4000082 thrsleep syz-fuzzer 62596 473730 12860 0 3 0x4000082 thrsleep syz-fuzzer 62596 226872 12860 0 3 0x4000082 kqread syz-fuzzer 62596 364941 12860 0 3 0x4000082 thrsleep syz-fuzzer 62596 72268 12860 0 3 0x4000082 thrsleep syz-fuzzer 12860 70059 28712 0 3 0x10008a pause ksh 28712 482252 23262 0 3 0x92 select sshd 12543 328087 1 0 3 0x100083 ttyin getty 23262 303521 1 0 3 0x80 select sshd 8627 273347 75880 73 3 0x100090 kqread syslogd 75880 214194 1 0 3 0x100082 netio syslogd 10203 496221 1 77 3 0x100090 poll dhclient 62305 155164 1 0 3 0x80 poll dhclient 54972 435941 0 0 3 0x14200 bored smr 4678 206327 0 0 2 0x14200 zerothread 57100 48325 0 0 3 0x14200 aiodoned aiodoned 5385 366232 0 0 3 0x14200 syncer update 6629 54394 0 0 3 0x14200 cleaner cleaner 4642 300727 0 0 3 0x14200 reaper reaper 25531 315770 0 0 3 0x14200 pgdaemon pagedaemon 64684 206131 0 0 3 0x14200 bored crynlk 27730 464666 0 0 3 0x14200 bored crypto 65460 183555 0 0 3 0x40014200 acpi0 acpi0 11514 173964 0 0 3 0x14200 bored softnet 13436 392311 0 0 3 0x14200 bored systqmp 97907 143520 0 0 3 0x14200 bored systq 31928 299027 0 0 3 0x40014200 bored softclock 85644 219576 0 0 3 0x40014200 idle0 1 215112 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 9489 6340K 6854K 78643K 10893 0 pcb 13 8K 8K 78643K 55 0 rtable 114 5K 8K 78643K 379 0 ifaddr 71 14K 14K 78643K 130 0 counters 21 16K 16K 78643K 25 0 ioctlops 0 0K 4K 78643K 75 0 iov 0 0K 12K 78643K 22 0 mount 1 1K 1K 78643K 1 0 vnodes 1219 77K 77K 78643K 1315 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 10 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 87 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 317 0 sigio 0 0K 0K 78643K 6 0 proc 49 38K 63K 78643K 385 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 14 0 in_multi 53 3K 3K 78643K 69 0 ether_multi 1 0K 0K 78643K 6 0 mrt 0 0K 0K 78643K 2 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 195 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 135 72K 74K 78643K 1557 0 UVM aobj 13 2K 2K 78643K 21 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 29 0 NDP 11 0K 0K 78643K 19 0 temp 109 3857K 3921K 78643K 6833 0 kqueue 3 4K 8K 78643K 16 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 25 0 23 1 0 1 1 0 8 0 rtentry 112 50 0 6 2 0 2 2 0 8 0 unpcb 120 227 0 219 1 0 1 1 0 8 0 syncache 264 6 0 6 2 2 0 1 0 8 0 tcpqe 32 60 0 60 1 1 0 1 0 8 0 tcpcb 544 102 0 94 3 1 2 2 0 8 1 inpcb 296 671 0 664 4 2 2 2 0 8 1 nd6 48 8 0 2 1 0 1 1 0 8 0 ppxss 1136 1 0 1 1 1 0 1 0 8 0 pfstscr 40 4 0 3 1 0 1 1 0 8 0 pfrktable 1344 65 0 62 1 0 1 1 0 8 0 pftag 88 12 0 12 2 2 0 1 0 8 0 pfstitem 24 6 0 4 1 0 1 1 0 8 0 pfstkey 112 8 0 6 1 0 1 1 0 8 0 pfstate 328 4 0 3 1 0 1 1 0 8 0 pfrule 1360 14 0 10 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 192 0 2 12 0 12 12 0 8 0 art_table 32 193 0 2 2 0 2 2 0 8 0 art_node 16 49 0 9 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 0 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 80 0 70 1 0 1 1 0 8 0 shmpl 112 18 0 8 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1767 0 369 88 0 88 88 0 8 0 ffsino 240 1767 0 369 83 0 83 83 0 8 0 nchpl 144 2361 0 759 60 0 60 60 0 8 0 uvmvnodes 72 1879 0 0 35 0 35 35 0 8 0 vnodes 208 1879 0 0 99 0 99 99 0 8 0 namei 1024 6042 0 6042 3 2 1 1 0 8 1 vcpupl 1984 5 0 0 1 0 1 1 0 8 0 vmpool 528 6 0 1 2 1 1 1 0 8 0 pfiaddrpl 120 20 0 18 1 0 1 1 0 8 0 scxspl 192 7250 0 7250 1 0 1 1 0 8 1 plimitpl 152 41 0 34 1 0 1 1 0 8 0 sigapl 424 503 0 475 4 0 4 4 0 8 0 futexpl 56 5990 0 5990 3 2 1 1 0 8 1 knotepl 112 77 0 60 1 0 1 1 0 8 0 kqueuepl 144 30 0 28 1 0 1 1 0 8 0 pipepl 272 113 0 104 1 0 1 1 0 8 0 fdescpl 432 489 0 475 2 0 2 2 0 8 0 filepl 120 2813 0 2729 4 0 4 4 0 8 1 lockfpl 104 43 0 42 1 0 1 1 0 8 0 lockfspl 48 19 0 18 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 96 259 0 251 1 0 1 1 0 8 0 zombiepl 144 476 0 475 1 0 1 1 0 8 0 processpl 928 503 0 475 4 0 4 4 0 8 0 procpl 624 837 0 801 6 2 4 4 0 8 1 sockpl 400 936 0 919 6 3 3 4 0 8 1 mcl64k 65536 18 0 18 3 2 1 1 0 8 1 mcl16k 16384 2 0 2 1 1 0 1 0 8 0 mcl12k 12288 7 0 7 3 2 1 1 0 8 1 mcl9k 9216 7 0 7 3 2 1 1 0 8 1 mcl8k 8192 13 0 13 3 2 1 1 0 8 1 mcl4k 4096 34 0 34 4 3 1 1 0 8 1 mcl2k2 2112 1 0 1 1 0 1 1 0 8 1 mcl2k 2048 95392 0 95345 18 10 8 13 0 8 1 mtagpl 96 29 0 15 2 1 1 1 0 8 0 mbufpl 256 151897 0 151790 15 4 11 11 0 8 0 bufpl 280 4054 0 128 281 0 281 281 0 8 0 anonpl 16 60510 0 43337 80 9 71 77 0 107 0 amapchunkpl 152 2774 0 2645 26 13 13 19 0 158 6 amappl16 192 2000 0 1044 50 1 49 49 0 8 1 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 23 0 19 1 0 1 1 0 8 0 amappl13 168 312 0 306 1 0 1 1 0 8 0 amappl12 160 296 0 291 1 0 1 1 0 8 0 amappl11 152 47 0 37 1 0 1 1 0 8 0 amappl10 144 19 0 14 1 0 1 1 0 8 0 amappl9 136 365 0 364 1 0 1 1 0 8 0 amappl8 128 331 0 285 2 0 2 2 0 8 0 amappl7 120 106 0 94 1 0 1 1 0 8 0 amappl6 112 26 0 17 1 0 1 1 0 8 0 amappl5 104 451 0 437 1 0 1 1 0 8 0 amappl4 96 421 0 395 1 0 1 1 0 8 0 amappl3 88 115 0 109 1 0 1 1 0 8 0 amappl2 80 3377 0 3310 2 0 2 2 0 8 0 amappl1 72 19844 0 19429 23 13 10 17 0 8 0 amappl 80 1067 0 1025 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 20 0 8 1 0 1 1 0 8 0 uaddrrnd 24 495 0 476 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 495 0 476 1 0 1 1 0 8 0 vmmpekpl 168 6938 0 6910 2 0 2 2 0 8 0 vmmpepl 168 66473 0 64401 124 28 96 116 0 357 4 vmsppl 272 494 0 476 3 1 2 2 0 8 0 pdppl 4096 996 0 957 8 2 6 6 0 8 0 pvpl 32 188525 0 168372 187 11 176 184 0 265 13 pmappl 200 494 0 476 2 0 2 2 0 8 1 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 264 0 35 7 0 7 7 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace in_delmulti(23) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000ae8400) 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(ffff80001d786e50) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd805e5aaa90,7,fffffd806c3bfc60,ffff80001d6aa868) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8057244b50,ffff80001d6aa868) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8057244b50,ffff80001d6aa868) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd8057244b50,ffff80001d6aa868) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8057244b50,ffff80001d6aa868) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d6aa868) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d6aa868,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff80001d6aa868,19) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff80001d6aa868,19) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff80001d6aa868) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001d7872d0) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001d7872d0) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbe400, count: -17 ddb> machine ddbcpu 1 No such command ddb> trace in_delmulti(23) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000ae8400) 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(ffff80001d786e50) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd805e5aaa90,7,fffffd806c3bfc60,ffff80001d6aa868) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8057244b50,ffff80001d6aa868) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8057244b50,ffff80001d6aa868) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd8057244b50,ffff80001d6aa868) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8057244b50,ffff80001d6aa868) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d6aa868) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d6aa868,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff80001d6aa868,19) at postsig+0x4b2 sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff80001d6aa868,19) at postsig+0x4b2 sys/kern/kern_sig.c:1415 userret(ffff80001d6aa868) at userret+0x159 sys/kern/kern_sig.c:1872 syscall(ffff80001d7872d0) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80001d7872d0) at syscall+0x42e sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbe400, count: -17