uvm_fault(0xfffffd807effe8a0, 0x8000000b, 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, 0x8000000b, 0, 1) -> e in_delmulti(7fffffff) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff800021eeaae0, count: 0 ddb{1}> trace in_delmulti(7fffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff8000006abe00) 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:1032 tun_clone_destroy(ffff800000ac6000) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:326 tun_dev_close(5d00,7) at tun_dev_close+0x160 sys/net/if_tun.c:477 spec_close(ffff800021eeacc0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806e32b688,7,fffffd807f7bf2a0,ffff800020eb6788) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8067db3318,ffff800020eb6788) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8067db3318,ffff800020eb6788) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd8067db3318,ffff800020eb6788) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8067db3318,ffff800020eb6788) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800020eb6788) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800020eb6788,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff800020eb6788,ffff800021eeaf50,ffff800021eeafa0) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800021eeb020) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021eeb020) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd0310, count: -16 ddb{1}> show registers rdi 0x2 rsi 0 rbp 0xffff800021eeaa90 rbx 0 rdx 0 rcx 0 rax 0xffff800020eb6788 r8 0xffff8000006abe00 r9 0xffffffff81e56833 rt_ifa_purge+0x153 r10 0x5 r11 0xf9b1092bb96caca5 r12 0 r13 0x3 r14 0x7fffffff r15 0x1 rip 0xffffffff823bf7bd in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800021eeaa30 ss 0 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> show proc PROC (syz-executor.0) pid=288008 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=75, nice=20 forw=0xffffffffffffffff, list=0xffff800020eb6c78,0xffffffff828cde18 process=0xffff800021eed7a0 user=0xffff800021ee6000, vmspace=0xfffffd807effe8a0 estcpu=25, cpticks=4, pctcpu=0.11 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 61750 302300 0 0 3 0x14200 bored sosplice 70329 390090 700 0 3 0x82 piperd syz-executor.1 700 72782 53413 0 3 0x82 thrsleep syz-fuzzer 700 407335 53413 0 3 0x4000082 nanosleep syz-fuzzer 700 268244 53413 0 3 0x4000082 thrsleep syz-fuzzer 700 465267 53413 0 2 0x4000002 syz-fuzzer 700 395411 53413 0 3 0x4000082 thrsleep syz-fuzzer 700 381770 53413 0 3 0x4000082 thrsleep syz-fuzzer 700 260023 53413 0 3 0x4000082 kqread syz-fuzzer 700 189563 53413 0 2 0x4000002 syz-fuzzer 53413 129410 81136 0 3 0x10008a pause ksh 81136 493894 3800 0 3 0x92 select sshd 13740 278876 1 0 3 0x100083 ttyin getty 3800 385868 1 0 3 0x80 select sshd 48922 43786 48217 74 3 0x100092 bpf pflogd 48217 247714 1 0 3 0x80 netio pflogd 15541 276414 54805 73 3 0x100090 kqread syslogd 54805 361231 1 0 3 0x100082 netio syslogd 61378 130505 1 77 7 0x100090 dhclient 61366 476673 1 0 3 0x80 poll dhclient 26110 432677 0 0 3 0x14200 bored smr 94821 186945 0 0 3 0x14200 pgzero zerothread 66647 316385 0 0 3 0x14200 aiodoned aiodoned 22830 287325 0 0 3 0x14200 syncer update 57245 227833 0 0 3 0x14200 cleaner cleaner 9952 345363 0 0 3 0x14200 reaper reaper 23063 118058 0 0 3 0x14200 pgdaemon pagedaemon 61764 507316 0 0 3 0x14200 bored crynlk 72226 471091 0 0 3 0x14200 bored crypto 57488 59891 0 0 3 0x40014200 acpi0 acpi0 50855 19175 0 0 3 0x40014200 idle1 66871 110853 0 0 3 0x14200 bored softnet 98980 345730 0 0 2 0x14200 systqmp 22324 512660 0 0 3 0x14200 bored systq 10612 310153 0 0 3 0x40014200 bored softclock 38950 403437 0 0 3 0x40014200 idle0 1 19738 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9499 6420K 6733K 78643K 10933 0 pcb 13 8K 8K 78643K 36 0 rtable 90 6K 9K 78643K 374 0 ifaddr 64 13K 14K 78643K 150 0 counters 43 33K 34K 78643K 65 0 ioctlops 0 0K 4K 78643K 1532 0 iov 0 0K 24K 78643K 25 0 mount 1 1K 1K 78643K 1 0 vnodes 1218 77K 77K 78643K 1321 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 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 80 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 4 9K 25K 78643K 293 0 sigio 1 0K 0K 78643K 4 0 proc 62 63K 95K 78643K 447 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 9 0 in_multi 33 2K 2K 78643K 52 0 ether_multi 1 0K 0K 78643K 4 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 216 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 165 58K 58K 78643K 1873 0 UVM aobj 18 6K 6K 78643K 29 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 31 0 NDP 10 0K 0K 78643K 26 0 temp 98 3869K 3933K 78643K 4406 0 kqueue 3 4K 12K 78643K 17 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 7 0 3 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 88 27 0 25 1 0 1 1 0 8 0 rtentry 112 52 0 24 2 0 2 2 0 8 0 unpcb 120 125 0 115 1 0 1 1 0 8 0 syncache 272 4 0 4 1 1 0 1 0 8 0 tcpqe 32 203 0 203 1 1 0 1 0 8 0 tcpcb 592 80 0 76 3 2 1 2 0 8 0 inpcb 296 243 0 234 4 2 2 2 0 8 1 nd6 48 8 0 1 1 0 1 1 0 8 0 ppxss 1136 1 0 1 1 0 1 1 0 8 1 pffrent 40 2 0 2 1 1 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 35 0 28 3 1 2 2 0 8 1 pftag 88 2 0 2 1 1 0 1 0 8 0 pfstitem 24 18 0 11 1 0 1 1 0 8 0 pfstkey 112 18 0 11 1 0 1 1 0 8 0 pfstate 328 18 0 11 2 0 2 2 0 8 1 pfrule 1360 28 0 26 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 221 0 66 12 1 11 12 0 8 0 art_table 32 222 0 66 2 0 2 2 0 8 0 art_node 16 48 0 22 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 2 1 0 1 1 0 8 0 semupl 112 3 0 3 2 2 0 1 0 8 0 semapl 112 76 0 66 1 0 1 1 0 8 0 shmpl 112 26 0 11 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1765 0 365 88 0 88 88 0 8 0 ffsino 272 1765 0 365 95 1 94 94 0 8 0 nchpl 144 2348 0 762 60 0 60 60 0 8 0 uvmvnodes 72 1881 0 0 35 0 35 35 0 8 0 vnodes 208 1881 0 0 99 0 99 99 0 8 0 namei 1024 6626 0 6626 3 2 1 1 0 8 1 percpumem 16 43 0 11 1 0 1 1 0 8 0 vcpupl 1984 3 0 0 1 0 1 1 0 8 0 vmpool 560 3 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 13 0 10 1 0 1 1 0 8 0 scxspl 200 7193 0 7193 8 7 1 7 0 8 1 plimitpl 152 26 0 18 1 0 1 1 0 8 0 sigapl 424 509 0 478 4 0 4 4 0 8 0 futexpl 56 4081 0 4081 2 1 1 1 0 8 1 knotepl 112 90 0 76 1 0 1 1 0 8 0 kqueuepl 152 44 0 41 1 0 1 1 0 8 0 pipepl 304 114 0 106 3 1 2 2 0 8 1 fdescpl 496 493 0 478 3 0 3 3 0 8 0 filepl 152 2725 0 2638 6 1 5 5 0 8 1 lockfpl 104 75 0 74 1 0 1 1 0 8 0 lockfspl 48 25 0 24 1 0 1 1 0 8 0 sessionpl 120 18 0 7 1 0 1 1 0 8 0 pgrppl 48 24 0 13 1 0 1 1 0 8 0 ucredpl 96 206 0 197 1 0 1 1 0 8 0 zombiepl 144 479 0 478 2 1 1 1 0 8 0 processpl 1008 509 0 478 7 2 5 5 0 8 0 procpl 632 1053 0 1015 5 1 4 4 0 8 0 sosppl 144 8 0 8 1 0 1 1 0 8 1 sockpl 400 397 0 376 6 3 3 4 0 8 0 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 4 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 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 206 0 0 25 0 25 25 0 8 0 mtagpl 96 21 0 0 1 0 1 1 0 8 0 mbufpl 256 226 0 0 14 0 14 14 0 8 0 bufpl 280 3940 0 126 273 0 273 273 0 8 0 anonpl 16 65564 0 47148 90 4 86 89 0 124 11 amapchunkpl 152 2811 0 2501 18 5 13 16 0 158 0 amappl16 192 2435 0 1587 54 7 47 54 0 8 4 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 2 0 1 1 0 1 1 0 8 0 amappl13 168 190 0 186 1 0 1 1 0 8 0 amappl12 160 27 0 22 1 0 1 1 0 8 0 amappl11 152 56 0 40 1 0 1 1 0 8 0 amappl10 144 28 0 23 1 0 1 1 0 8 0 amappl9 136 367 0 366 1 0 1 1 0 8 0 amappl8 128 337 0 302 2 0 2 2 0 8 0 amappl7 120 121 0 109 1 0 1 1 0 8 0 amappl6 112 35 0 25 1 0 1 1 0 8 0 amappl5 104 392 0 376 1 0 1 1 0 8 0 amappl4 96 646 0 620 1 0 1 1 0 8 0 amappl3 88 126 0 118 1 0 1 1 0 8 0 amappl2 80 2975 0 2908 2 0 2 2 0 8 0 amappl1 72 22976 0 22502 24 14 10 18 0 8 0 amappl 80 1344 0 1261 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 28 0 11 1 0 1 1 0 8 0 uaddrrnd 24 496 0 478 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 496 0 478 1 0 1 1 0 8 0 vmmpekpl 168 7555 0 7515 2 0 2 2 0 8 0 vmmpepl 168 69367 0 67343 128 28 100 114 0 357 8 vmsppl 368 495 0 478 2 0 2 2 0 8 0 pdppl 4096 999 0 959 7 1 6 6 0 8 0 pvpl 32 211112 0 189532 211 5 206 209 0 265 31 pmappl 232 495 0 478 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 265 0 12 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 __mp_lock(ffffffff82933140) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82933140) at __mp_lock+0x127 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff82933140,2) at __mp_acquire_count+0x51 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x392 sys/kern/sched_bsd.c:435 sleep_finish(ffff800020e187a0,1) at sleep_finish+0x113 sys/kern/kern_synch.c:418 sleep_finish_all(ffff800020e187a0,1) at sleep_finish_all+0x32 sleep_finish_timeout sys/kern/kern_synch.c:447 [inline] sleep_finish_all(ffff800020e187a0,1) at sleep_finish_all+0x32 sys/kern/kern_synch.c:393 tsleep(ffffffff828c1bbc,118,ffffffff8246aadb,41d265) at tsleep+0x1cc sys/kern/kern_synch.c:155 doppoll(ffff800020dd7640,7f7fffff3970,3,ffff800020e18938,0,ffff800020e189f0) at doppoll+0x57e sys/kern/sys_generic.c:968 sys_poll(ffff800020dd7640,ffff800020e189a0,ffff800020e189f0) at sys_poll+0xa6 syscall(ffff800020e18a70) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e18a70) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff3950, count: -13 ddb{0}> machine ddbcpu 1 Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> trace in_delmulti(7fffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff8000006abe00) 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:1032 tun_clone_destroy(ffff800000ac6000) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:326 tun_dev_close(5d00,7) at tun_dev_close+0x160 sys/net/if_tun.c:477 spec_close(ffff800021eeacc0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806e32b688,7,fffffd807f7bf2a0,ffff800020eb6788) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8067db3318,ffff800020eb6788) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8067db3318,ffff800020eb6788) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd8067db3318,ffff800020eb6788) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8067db3318,ffff800020eb6788) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800020eb6788) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800020eb6788,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff800020eb6788,ffff800021eeaf50,ffff800021eeafa0) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800021eeb020) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021eeb020) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd0310, count: -16