login: kernel: protection 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 the kernel did not panic ddb> trace in_delmulti(fff9fffffff7feff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000ad8600) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac7000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac7000) at if_detach+0x140 sys/net/if.c:1032 tun_clone_destroy(ffff800000ac7000) 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(ffff80001e7c3670) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd805dd6f9c0,7,fffffd806c3bf960,ffff80001d6be9f8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8057a01ea0,ffff80001d6be9f8) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8057a01ea0,ffff80001d6be9f8) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd8057a01ea0,ffff80001d6be9f8) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8057a01ea0,ffff80001d6be9f8) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d6be9f8) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d6be9f8,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff80001d6be9f8,ffff80001e7c3900,ffff80001e7c3950) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff80001e7c39d0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc53a0, count: -16 ddb> show registers rdi 0x2 rsi 0 rbp 0xffff80001e7c3440 rbx 0 rdx 0 rcx 0x1 rax 0xffff80001d6be9f8 r8 0xffff800000ad8600 r9 0xffffffff81256843 rt_ifa_purge+0x153 r10 0x5 r11 0x7e535b1d3de0fc5f r12 0 r13 0x3 r14 0xfff9fffffff7feff r15 0x1 rip 0xffffffff817ba21d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001e7c33e0 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> show proc PROC (syz-executor.1) pid=509766 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=72, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6bec70,0xffff80001d6bf8d8 process=0xffff80001d6ff9e8 user=0xffff80001e7be000, vmspace=0xfffffd8056f8add8 estcpu=22, cpticks=1, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 71499 383617 88274 0 2 0 syz-executor.0 71499 120454 88274 0 3 0x4000080 fsleep syz-executor.0 18773 290799 0 0 3 0x14200 bored sosplice 18820 207519 1 0 3 0x100083 ttyin getty 88274 344075 57468 0 3 0x82 nanosleep syz-executor.0 57468 27934 24577 0 3 0x82 thrsleep syz-fuzzer 57468 101710 24577 0 3 0x4000082 nanosleep syz-fuzzer 57468 46617 24577 0 2 0x4000002 syz-fuzzer 57468 142717 24577 0 3 0x4000082 thrsleep syz-fuzzer 57468 390250 24577 0 3 0x4000082 thrsleep syz-fuzzer 57468 93660 24577 0 3 0x4000082 thrsleep syz-fuzzer 57468 507117 24577 0 3 0x4000082 thrsleep syz-fuzzer 24577 290301 4684 0 3 0x10008a pause ksh 4684 144267 18396 0 3 0x92 select sshd 18396 296771 1 0 3 0x80 select sshd 37488 101697 15056 73 3 0x100090 kqread syslogd 15056 325200 1 0 3 0x100082 netio syslogd 69926 64933 1 77 2 0x100090 dhclient 82675 514644 1 0 3 0x80 poll dhclient 23402 87024 0 0 3 0x14200 bored smr 17899 485856 0 0 2 0x14200 zerothread 99631 145083 0 0 3 0x14200 aiodoned aiodoned 32517 113551 0 0 3 0x14200 syncer update 36447 113990 0 0 3 0x14200 cleaner cleaner 61623 338839 0 0 3 0x14200 reaper reaper 29304 172995 0 0 3 0x14200 pgdaemon pagedaemon 18680 74190 0 0 3 0x14200 bored crynlk 36695 493423 0 0 3 0x14200 bored crypto 57772 207874 0 0 3 0x40014200 acpi0 acpi0 80494 244739 0 0 3 0x14200 bored softnet 73759 268805 0 0 2 0x14200 systqmp 59415 294088 0 0 3 0x14200 bored systq 33108 270238 0 0 3 0x40014200 bored softclock 83326 208925 0 0 3 0x40014200 idle0 1 137665 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 9448 6331K 6591K 78643K 10604 0 pcb 13 8K 8K 78643K 29 0 rtable 104 3K 7K 78643K 254 0 ifaddr 43 11K 12K 78643K 62 0 counters 21 16K 16K 78643K 22 0 ioctlops 0 0K 4K 78643K 33 0 mount 1 1K 1K 78643K 1 0 vnodes 1218 77K 77K 78643K 1241 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 3 5K 5K 78643K 5 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 24 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 97 0 proc 48 38K 63K 78643K 375 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 4 0 in_multi 46 2K 3K 78643K 54 0 ether_multi 1 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 198 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 130 38K 38K 78643K 1075 0 UVM aobj 5 2K 2K 78643K 5 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 5 0K 0K 78643K 12 0 temp 68 3853K 3917K 78643K 2027 0 kqueue 3 4K 5K 78643K 7 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 6 0 2 1 0 1 1 0 8 0 rtpcb 88 23 0 21 1 0 1 1 0 8 0 rtentry 112 50 0 7 2 0 2 2 0 8 0 unpcb 120 47 0 39 1 0 1 1 0 8 0 syncache 272 4 0 4 1 1 0 1 0 8 0 tcpcb 592 38 0 29 2 0 2 2 0 8 0 inpcb 296 184 0 177 2 0 2 2 0 8 1 nd6 48 9 0 1 1 0 1 1 0 8 0 pfrktable 1344 20 0 20 1 0 1 1 0 8 1 pftag 88 4 0 4 1 0 1 1 0 8 1 pfrule 1360 4 0 2 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 210 0 0 14 0 14 14 0 8 0 art_table 32 211 0 0 2 0 2 2 0 8 0 art_node 16 49 0 7 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 2 1 0 1 1 0 8 1 semupl 112 3 0 3 1 0 1 1 0 8 1 semapl 112 14 0 4 1 0 1 1 0 8 0 shmpl 112 2 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1499 0 102 88 0 88 88 0 8 0 ffsino 240 1499 0 102 83 0 83 83 0 8 0 nchpl 144 1806 0 223 60 0 60 60 0 8 0 uvmvnodes 72 1554 0 0 29 0 29 29 0 8 0 vnodes 208 1554 0 0 82 0 82 82 0 8 0 namei 1024 4516 0 4516 1 0 1 1 0 8 1 vcpupl 1984 2 0 0 1 0 1 1 0 8 0 vmpool 528 2 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 6 0 6 1 0 1 1 0 8 1 scxspl 200 5012 0 5012 1 0 1 1 0 8 1 plimitpl 152 19 0 12 1 0 1 1 0 8 0 sigapl 424 285 0 256 4 0 4 4 0 8 0 futexpl 56 1397 0 1396 1 0 1 1 0 8 0 knotepl 112 64 0 50 1 0 1 1 0 8 0 kqueuepl 152 10 0 8 1 0 1 1 0 8 0 pipepl 272 79 0 71 1 0 1 1 0 8 0 fdescpl 432 270 0 256 2 0 2 2 0 8 0 filepl 120 1429 0 1347 4 0 4 4 0 8 0 lockfpl 104 21 0 20 1 0 1 1 0 8 0 lockfspl 48 10 0 9 1 0 1 1 0 8 0 sessionpl 120 18 0 8 1 0 1 1 0 8 0 pgrppl 48 18 0 8 1 0 1 1 0 8 0 ucredpl 96 91 0 84 1 0 1 1 0 8 0 zombiepl 144 257 0 256 1 0 1 1 0 8 0 processpl 944 285 0 256 4 0 4 4 0 8 0 procpl 632 378 0 342 4 0 4 4 0 8 0 sosppl 144 2 0 2 1 0 1 1 0 8 1 sockpl 400 254 0 237 4 0 4 4 0 8 2 mcl12k 12288 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 3 0 3 1 0 1 1 0 8 1 mcl4k 4096 13 0 13 2 1 1 1 0 8 1 mcl2k2 2112 1 0 1 1 0 1 1 0 8 1 mcl2k 2048 93783 0 93740 17 4 13 14 0 8 7 mtagpl 96 6 0 6 2 1 1 1 0 8 1 mbufpl 256 148318 0 148259 14 2 12 12 0 8 3 bufpl 280 3356 0 116 232 0 232 232 0 8 0 anonpl 16 42311 0 24984 74 2 72 72 0 107 0 amapchunkpl 152 1237 0 1055 9 0 9 9 0 158 1 amappl16 192 1281 0 339 48 0 48 48 0 8 0 amappl15 184 2 0 0 1 0 1 1 0 8 0 amappl14 176 34 0 32 1 0 1 1 0 8 0 amappl13 168 26 0 23 1 0 1 1 0 8 0 amappl12 160 27 0 25 1 0 1 1 0 8 0 amappl11 152 84 0 74 1 0 1 1 0 8 0 amappl10 144 14 0 8 1 0 1 1 0 8 0 amappl9 136 373 0 370 1 0 1 1 0 8 0 amappl8 128 292 0 264 1 0 1 1 0 8 0 amappl7 120 103 0 93 1 0 1 1 0 8 0 amappl6 112 28 0 21 1 0 1 1 0 8 0 amappl5 104 198 0 186 1 0 1 1 0 8 0 amappl4 96 461 0 433 1 0 1 1 0 8 0 amappl3 88 152 0 141 1 0 1 1 0 8 0 amappl2 80 1284 0 1213 2 0 2 2 0 8 0 amappl1 72 15203 0 14771 23 13 10 17 0 8 1 amappl 80 611 0 556 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 4 0 0 1 0 1 1 0 8 0 uaddrrnd 24 272 0 256 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 272 0 256 1 0 1 1 0 8 0 vmmpekpl 168 6018 0 5994 2 0 2 2 0 8 0 vmmpepl 168 40385 0 38304 121 4 117 117 0 357 25 vmsppl 272 271 0 256 2 0 2 2 0 8 0 pdppl 4096 550 0 514 6 0 6 6 0 8 1 pvpl 32 141776 0 121493 168 0 168 168 0 265 0 pmappl 200 271 0 256 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 241 0 10 7 0 7 7 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace in_delmulti(fff9fffffff7feff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000ad8600) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac7000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac7000) at if_detach+0x140 sys/net/if.c:1032 tun_clone_destroy(ffff800000ac7000) 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(ffff80001e7c3670) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd805dd6f9c0,7,fffffd806c3bf960,ffff80001d6be9f8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8057a01ea0,ffff80001d6be9f8) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8057a01ea0,ffff80001d6be9f8) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd8057a01ea0,ffff80001d6be9f8) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8057a01ea0,ffff80001d6be9f8) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d6be9f8) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d6be9f8,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff80001d6be9f8,ffff80001e7c3900,ffff80001e7c3950) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff80001e7c39d0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc53a0, count: -16 ddb> machine ddbcpu 1 No such command ddb> trace in_delmulti(fff9fffffff7feff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000ad8600) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac7000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac7000) at if_detach+0x140 sys/net/if.c:1032 tun_clone_destroy(ffff800000ac7000) 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(ffff80001e7c3670) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd805dd6f9c0,7,fffffd806c3bf960,ffff80001d6be9f8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8057a01ea0,ffff80001d6be9f8) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8057a01ea0,ffff80001d6be9f8) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd8057a01ea0,ffff80001d6be9f8) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8057a01ea0,ffff80001d6be9f8) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d6be9f8) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d6be9f8,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff80001d6be9f8,ffff80001e7c3900,ffff80001e7c3950) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff80001e7c39d0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc53a0, count: -16