login: uvm_fault(0xfffffd807effe8a0, 0xb, 0, 1) -> e kernel: page fault trap, code=0 Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic kernel page fault uvm_fault(0xfffffd807effe8a0, 0xb, 0, 1) -> e in_delmulti(ffffffffffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff800021f04760, count: 0 ddb{1}> trace in_delmulti(ffffffffffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000aa2700) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000b23800) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000b23800) at if_detach+0x140 sys/net/if.c:1032 tun_clone_destroy(ffff800000b23800) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:326 tun_dev_close(5d01,7) at tun_dev_close+0x160 sys/net/if_tun.c:477 spec_close(ffff800021f04940) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd80794ed1a8,7,fffffd807f7bf9c0,ffff800020ea13d8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd806cac2308,ffff800020ea13d8) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd806cac2308,ffff800020ea13d8) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd806cac2308,ffff800020ea13d8) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd806cac2308,ffff800020ea13d8) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800020ea13d8) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800020ea13d8,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff800020ea13d8,19) at postsig+0x4ed sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff800020ea13d8,19) at postsig+0x4ed sys/kern/kern_sig.c:1415 userret(ffff800020ea13d8) at userret+0x199 sys/kern/kern_sig.c:1872 syscall(ffff800021f04dc0) at syscall+0x55f mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff800021f04dc0) at syscall+0x55f sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc3250, count: -17 ddb{1}> show registers rdi 0x2 rsi 0 rbp 0xffff800021f04710 rbx 0 rdx 0 rcx 0 rax 0xffff800020ea13d8 r8 0xffff800000aa2700 r9 0xffffffff81e56833 rt_ifa_purge+0x153 r10 0x5 r11 0xb878848c98d305 r12 0 r13 0x3 r14 0xffffffffffffffff r15 0x1 rip 0xffffffff823bf7bd in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800021f046b0 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> show proc PROC (syz-executor.1) pid=399738 stat=onproc flags process=a proc=2000 pri=32, usrpri=57, nice=20 forw=0xffffffffffffffff, list=0xffff800020ea0018,0xffff800020ea1b50 process=0xffff800020ea23f8 user=0xffff800021eff000, vmspace=0xfffffd807effe8a0 estcpu=14, cpticks=2, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 31051 132142 65837 0 2 0 syz-executor.0 46259 142424 1 0 3 0x100083 ttyin getty 47291 125494 0 0 3 0x14280 nfsidl nfsio 17926 63013 0 0 3 0x14280 nfsidl nfsio 90769 155708 0 0 3 0x14280 nfsidl nfsio 37238 73962 0 0 3 0x14280 nfsidl nfsio 88545 372167 0 0 3 0x14280 nfsidl nfsio 97508 206713 0 0 3 0x14280 nfsidl nfsio 93057 220201 0 0 3 0x14280 nfsidl nfsio 88910 183029 0 0 3 0x14280 nfsidl nfsio 47770 16161 0 0 3 0x14280 nfsidl nfsio 15897 443038 0 0 3 0x14280 nfsidl nfsio 40648 367075 0 0 3 0x14280 nfsidl nfsio 59517 320544 0 0 3 0x14280 nfsidl nfsio 73931 27014 0 0 3 0x14280 nfsidl nfsio 13563 407977 0 0 3 0x14280 nfsidl nfsio 4690 118011 0 0 3 0x14280 nfsidl nfsio 62876 500162 0 0 3 0x14280 nfsidl nfsio 43410 522952 0 0 3 0x14280 nfsidl nfsio 19017 506044 0 0 3 0x14280 nfsidl nfsio 63144 82009 0 0 3 0x14280 nfsidl nfsio 44559 3260 0 0 3 0x14280 nfsidl nfsio 15970 107299 0 0 3 0x14200 bored sosplice 65837 516800 41504 0 3 0x82 nanosleep syz-executor.0 41504 107067 26459 0 3 0x82 thrsleep syz-fuzzer 41504 28534 26459 0 7 0x4000002 syz-fuzzer 41504 368439 26459 0 3 0x4000082 thrsleep syz-fuzzer 41504 110496 26459 0 3 0x4000082 thrsleep syz-fuzzer 41504 231400 26459 0 3 0x4000082 thrsleep syz-fuzzer 41504 478537 26459 0 3 0x4000082 thrsleep syz-fuzzer 41504 435422 26459 0 3 0x4000082 thrsleep syz-fuzzer 41504 360111 26459 0 3 0x4000082 kqread syz-fuzzer 26459 266527 83397 0 3 0x10008a pause ksh 83397 454157 63395 0 3 0x92 select sshd 63395 135950 1 0 3 0x80 select sshd 25651 35184 26276 74 3 0x100092 bpf pflogd 26276 184629 1 0 3 0x80 netio pflogd 54437 99049 41015 73 3 0x100090 kqread syslogd 41015 317294 1 0 3 0x100082 netio syslogd 57408 136399 1 77 2 0x100090 dhclient 30013 320068 1 0 3 0x80 poll dhclient 89300 211580 0 0 3 0x14200 bored smr 18482 158348 0 0 2 0x14200 zerothread 14480 79243 0 0 3 0x14200 aiodoned aiodoned 24343 78029 0 0 3 0x14200 syncer update 49567 375787 0 0 3 0x14200 cleaner cleaner 17856 385800 0 0 3 0x14200 reaper reaper 25276 422914 0 0 3 0x14200 pgdaemon pagedaemon 22111 201918 0 0 3 0x14200 bored crynlk 63821 182401 0 0 3 0x14200 bored crypto 95328 109014 0 0 3 0x40014200 acpi0 acpi0 46822 325525 0 0 3 0x40014200 idle1 82045 175816 0 0 3 0x14200 bored softnet 21769 56125 0 0 2 0x14200 systqmp 86199 363879 0 0 3 0x14200 bored systq 1867 22028 0 0 3 0x40014200 bored softclock 80522 435276 0 0 3 0x40014200 idle0 1 142786 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 41504 (syz-fuzzer) thread 0xffff8000fffff8c0 (28534) exclusive rwlock pslock r = 0 (0xffff8000ffffd880) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 thrsleep+0x36b sys/kern/kern_synch.c:729 #2 sys___thrsleep+0xb5 sys/kern/kern_synch.c:777 #3 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #3 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #4 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9522 6425K 6942K 78643K 11106 0 pcb 13 8K 8K 78643K 106 0 rtable 96 12K 17K 78643K 447 0 ifaddr 76 14K 15K 78643K 148 0 counters 43 33K 34K 78643K 57 0 ioctlops 0 0K 4K 78643K 1541 0 iov 0 0K 16K 78643K 54 0 mount 1 1K 1K 78643K 1 0 vnodes 1215 76K 77K 78643K 1395 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 9 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 153 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 464 0 sigio 0 0K 0K 78643K 3 0 proc 62 63K 83K 78643K 505 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 40 0 in_multi 50 2K 3K 78643K 135 0 ether_multi 1 0K 0K 78643K 12 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 37 175K 175K 78643K 37 0 exec 0 0K 1K 78643K 241 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 163 60K 63K 78643K 2473 0 UVM aobj 17 2K 3K 78643K 21 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 56 0 NDP 13 0K 0K 78643K 32 0 temp 114 3867K 3934K 78643K 6877 0 kqueue 3 4K 8K 78643K 7 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 8 0 4 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 88 57 0 55 1 0 1 1 0 8 0 rtentry 112 77 0 43 2 0 2 2 0 8 0 unpcb 120 248 0 238 1 0 1 1 0 8 0 syncache 272 5 0 5 2 1 1 1 0 8 1 tcpqe 32 117 0 117 2 1 1 1 0 8 1 tcpcb 592 130 0 123 3 1 2 2 0 8 0 inpcb 296 451 0 444 4 3 1 2 0 8 0 nd6 48 22 0 20 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 swfcl 56 1 0 0 1 0 1 1 0 8 0 ppxss 1136 3 0 3 2 2 0 1 0 8 0 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pffrag 232 6 0 6 3 3 0 1 0 482 0 pffrnode 88 6 0 6 3 3 0 1 0 8 0 pffrent 40 101 0 101 3 3 0 1 0 8 0 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 40 0 38 1 0 1 1 0 8 0 pftag 88 2 0 2 1 1 0 1 0 8 0 pfstitem 24 22 0 14 1 0 1 1 0 8 0 pfstkey 112 26 0 18 1 0 1 1 0 8 0 pfstate 328 24 0 16 2 0 2 2 0 8 0 pfrule 1360 30 0 23 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 371 0 215 15 4 11 15 0 8 0 art_table 32 372 0 215 2 0 2 2 0 8 0 art_node 16 76 0 40 1 0 1 1 0 8 0 sysvmsgpl 40 10 0 4 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 151 0 141 1 0 1 1 0 8 0 shmpl 112 18 0 4 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2016 0 617 88 0 88 88 0 8 0 ffsino 272 2016 0 617 94 0 94 94 0 8 0 nchpl 144 2924 0 1331 60 0 60 60 0 8 0 uvmvnodes 72 2179 0 0 40 0 40 40 0 8 0 vnodes 208 2179 0 0 115 0 115 115 0 8 0 namei 1024 7796 0 7796 1 0 1 1 0 8 1 percpumem 16 39 0 7 1 0 1 1 0 8 0 vcpupl 1984 3 0 0 1 0 1 1 0 8 0 vmpool 560 7 0 4 1 0 1 1 0 8 0 pfiaddrpl 120 12 0 10 1 0 1 1 0 8 0 scxspl 200 13116 0 13116 10 7 3 7 0 8 3 plimitpl 152 32 0 24 1 0 1 1 0 8 0 sigapl 424 699 0 647 6 0 6 6 0 8 0 futexpl 56 8993 0 8993 1 0 1 1 0 8 1 knotepl 112 78 0 60 1 0 1 1 0 8 0 kqueuepl 152 40 0 38 1 0 1 1 0 8 0 pipepl 304 135 0 125 3 1 2 2 0 8 1 fdescpl 496 662 0 646 3 0 3 3 0 8 0 filepl 152 3481 0 3390 5 0 5 5 0 8 1 lockfpl 104 85 0 84 1 0 1 1 0 8 0 lockfspl 48 30 0 29 1 0 1 1 0 8 0 sessionpl 120 20 0 9 1 0 1 1 0 8 0 pgrppl 48 26 0 15 1 0 1 1 0 8 0 ucredpl 96 197 0 188 1 0 1 1 0 8 0 zombiepl 144 648 0 647 1 0 1 1 0 8 0 processpl 1008 699 0 647 7 0 7 7 0 8 0 procpl 632 1507 0 1448 6 0 6 6 0 8 0 sosppl 144 14 0 14 4 3 1 1 0 8 1 sockpl 400 758 0 739 5 2 3 4 0 8 1 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 5 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 6 0 0 1 0 1 1 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 193 0 0 24 0 24 24 0 8 0 mtagpl 96 31 0 0 1 0 1 1 0 8 0 mbufpl 256 308 0 0 17 0 17 17 0 8 0 bufpl 280 8876 0 2639 446 0 446 446 0 8 0 anonpl 16 94435 0 76896 75 2 73 74 0 124 0 amapchunkpl 152 10862 0 10583 24 5 19 19 0 158 4 amappl16 192 2345 0 1502 45 1 44 44 0 8 1 amappl15 184 1 0 1 1 1 0 1 0 8 0 amappl14 176 156 0 153 1 0 1 1 0 8 0 amappl13 168 300 0 294 1 0 1 1 0 8 0 amappl12 160 286 0 280 1 0 1 1 0 8 0 amappl11 152 212 0 196 1 0 1 1 0 8 0 amappl10 144 16 0 12 1 0 1 1 0 8 0 amappl9 136 365 0 363 1 0 1 1 0 8 0 amappl8 128 370 0 330 2 0 2 2 0 8 0 amappl7 120 127 0 113 1 0 1 1 0 8 0 amappl6 112 192 0 182 1 0 1 1 0 8 0 amappl5 104 352 0 334 1 0 1 1 0 8 0 amappl4 96 714 0 686 1 0 1 1 0 8 0 amappl3 88 187 0 179 1 0 1 1 0 8 0 amappl2 80 4491 0 4423 2 0 2 2 0 8 0 amappl1 72 27874 0 27446 23 13 10 18 0 8 0 amappl 80 1875 0 1795 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 20 0 4 1 0 1 1 0 8 0 uaddrrnd 24 669 0 650 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 669 0 650 1 0 1 1 0 8 0 vmmpekpl 168 8424 0 8382 3 0 3 3 0 8 0 vmmpepl 168 90408 0 88380 135 39 96 123 0 357 1 vmsppl 368 668 0 650 2 0 2 2 0 8 0 pdppl 4096 1345 0 1303 6 0 6 6 0 8 0 pvpl 32 303013 0 282221 190 11 179 181 0 265 6 pmappl 232 668 0 650 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 266 0 10 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff82785ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x38 kd_curproc sys/dev/kcov.c:457 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x38 sys/dev/kcov.c:112 sleep_setup(ffff800020e7c860,ffff800020e7c918,120,ffffffff82473425) at sleep_setup+0xcf sys/kern/kern_synch.c:373 rwsleep(ffff800020e7c918,ffff8000ffffd870,120,ffffffff82473425,4e) at rwsleep+0x81 sleep_setup_timeout sys/kern/kern_synch.c:435 [inline] rwsleep(ffff800020e7c918,ffff8000ffffd870,120,ffffffff82473425,4e) at rwsleep+0x81 sys/kern/kern_synch.c:307 thrsleep(ffff8000fffff8c0,ffff800020e7ca00) at thrsleep+0x3f2 sys/kern/kern_synch.c:736 sys___thrsleep(ffff8000fffff8c0,ffff800020e7ca00,ffff800020e7ca50) at sys___thrsleep+0xb5 sys/kern/kern_synch.c:777 syscall(ffff800020e7cad0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e7cad0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc00004deb8, count: -10 ddb{0}> machine ddbcpu 1 Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> trace in_delmulti(ffffffffffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000aa2700) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000b23800) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000b23800) at if_detach+0x140 sys/net/if.c:1032 tun_clone_destroy(ffff800000b23800) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:326 tun_dev_close(5d01,7) at tun_dev_close+0x160 sys/net/if_tun.c:477 spec_close(ffff800021f04940) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd80794ed1a8,7,fffffd807f7bf9c0,ffff800020ea13d8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd806cac2308,ffff800020ea13d8) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd806cac2308,ffff800020ea13d8) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd806cac2308,ffff800020ea13d8) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd806cac2308,ffff800020ea13d8) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800020ea13d8) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800020ea13d8,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff800020ea13d8,19) at postsig+0x4ed sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff800020ea13d8,19) at postsig+0x4ed sys/kern/kern_sig.c:1415 userret(ffff800020ea13d8) at userret+0x199 sys/kern/kern_sig.c:1872 syscall(ffff800021f04dc0) at syscall+0x55f mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff800021f04dc0) at syscall+0x55f sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc3250, count: -17