ukernel: 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(0xfffffd807efff170, 0x17, 0, 1) -> e in_delmulti(b) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff800023f1e660, count: 0 ddb{1}> trace in_delmulti(b) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b2ef00) 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+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(ffff800023f1e840) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806e66c5b8,7,fffffd807f7bf840,ffff800023f9f3f0) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8066e7f740,ffff800023f9f3f0) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8066e7f740,ffff800023f9f3f0) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd8066e7f740,ffff800023f9f3f0) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8066e7f740,ffff800023f9f3f0) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800023f9f3f0) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800023f9f3f0,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff800023f9f3f0,ffff800023f1ead0,ffff800023f1eb20) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800023f1eba0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023f1eba0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe3280, count: -16 ddb{1}> show registers rdi 0x2 rsi 0 rbp 0xffff800023f1e610 rbx 0 rdx 0 rcx 0 rax 0xffff800023f9f3f0 r8 0xffff800000b2ef00 r9 0xffffffff821cd043 rt_ifa_purge+0x153 r10 0x5 r11 0x2d5b80ac827bd589 r12 0 r13 0x3 r14 0xb r15 0x1 rip 0xffffffff821c82ed in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800023f1e5b0 ss 0 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> show proc PROC (syz-executor.1) pid=506432 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800023f9ec88,0xffffffff828ed090 process=0xffff800020ee8fd0 user=0xffff800023f19000, vmspace=0xfffffd807efff170 estcpu=36, cpticks=13, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 65261 139397 0 0 3 0x14200 acct acct 81295 61555 0 0 3 0x14280 nfsidl nfsio 40085 498550 0 0 3 0x14280 nfsidl nfsio 85765 75245 0 0 3 0x14280 nfsidl nfsio 11408 448939 0 0 3 0x14280 nfsidl nfsio 97650 467142 0 0 3 0x14280 nfsidl nfsio 41479 122192 0 0 3 0x14280 nfsidl nfsio 16896 284825 0 0 3 0x14280 nfsidl nfsio 81697 128474 0 0 3 0x14280 nfsidl nfsio 52221 290534 0 0 3 0x14280 nfsidl nfsio 94618 346509 0 0 3 0x14280 nfsidl nfsio 37215 118359 0 0 3 0x14280 nfsidl nfsio 41521 48110 0 0 3 0x14280 nfsidl nfsio 92394 341647 0 0 3 0x14280 nfsidl nfsio 7459 423176 0 0 3 0x14280 nfsidl nfsio 73739 173996 0 0 3 0x14280 nfsidl nfsio 34505 443456 0 0 3 0x14280 nfsidl nfsio 19937 411226 0 0 3 0x14280 nfsidl nfsio 69212 455139 0 0 3 0x14280 nfsidl nfsio 12539 447551 0 0 3 0x14280 nfsidl nfsio 8238 162776 0 0 3 0x14280 nfsidl nfsio 10950 177131 0 0 3 0x14200 bored sosplice 75743 359874 1 0 3 0x100083 ttyin getty 10689 369422 99967 0 3 0x82 piperd syz-executor.0 99967 298627 26205 0 7 0x2 syz-fuzzer 99967 147631 26205 0 3 0x4000082 nanosleep syz-fuzzer 99967 238057 26205 0 3 0x4000082 thrsleep syz-fuzzer 99967 139207 26205 0 3 0x4000082 thrsleep syz-fuzzer 99967 226451 26205 0 3 0x4000082 thrsleep syz-fuzzer 99967 396817 26205 0 3 0x4000082 thrsleep syz-fuzzer 99967 290645 26205 0 2 0x4000002 syz-fuzzer 99967 483693 26205 0 3 0x4000082 kqread syz-fuzzer 26205 446738 37438 0 3 0x10008a pause ksh 37438 465911 44296 0 3 0x92 select sshd 44296 163762 1 0 3 0x80 select sshd 49021 125736 31895 74 3 0x100092 bpf pflogd 31895 216420 1 0 3 0x80 netio pflogd 93957 387832 97404 73 3 0x100090 kqread syslogd 97404 170397 1 0 3 0x100082 netio syslogd 69987 403645 1 77 2 0x100090 dhclient 66016 146159 1 0 3 0x80 poll dhclient 8138 306806 0 0 3 0x14200 bored smr 81430 323738 0 0 3 0x14200 pgzero zerothread 23541 155785 0 0 3 0x14200 aiodoned aiodoned 96743 273039 0 0 3 0x14200 syncer update 44819 136542 0 0 3 0x14200 cleaner cleaner 25657 37708 0 0 3 0x14200 reaper reaper 45597 473884 0 0 3 0x14200 pgdaemon pagedaemon 4012 114308 0 0 3 0x14200 bored crynlk 19968 100698 0 0 3 0x14200 bored crypto 94745 98116 0 0 3 0x40014200 acpi0 acpi0 37960 86196 0 0 3 0x40014200 idle1 96399 124440 0 0 3 0x14200 bored softnet 64724 301060 0 0 2 0x14200 systqmp 182 237858 0 0 3 0x14200 bored systq 20512 91444 0 0 3 0x40014200 bored softclock 31180 24897 0 0 3 0x40014200 idle0 1 455452 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 9538 6431K 10651K 78643K 12725 0 pcb 13 8K 8K 78643K 173 0 rtable 103 8K 9K 78643K 479 0 ifaddr 97 18K 20K 78643K 219 0 sysctl 1 1K 1K 78643K 1 0 counters 43 33K 34K 78643K 65 0 ioctlops 0 0K 4K 78643K 1684 0 iov 0 0K 16K 78643K 73 0 mount 1 1K 1K 78643K 1 0 vnodes 1216 76K 77K 78643K 1950 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 20 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 215 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 4 9K 25K 78643K 1178 0 sigio 0 0K 0K 78643K 20 0 proc 66 63K 95K 78643K 512 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 82 0 in_multi 72 3K 3K 78643K 262 0 ether_multi 1 0K 0K 78643K 23 0 mrt 0 0K 0K 78643K 4 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 55 254K 254K 78643K 55 0 exec 0 0K 1K 78643K 272 0 pfkey data 0 0K 0K 78643K 2 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 222 127K 131K 78643K 4758 0 UVM aobj 40 6K 6K 78643K 49 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 156 0 NDP 16 0K 0K 78643K 51 0 temp 150 3887K 3961K 78643K 9382 0 kqueue 3 4K 22K 78643K 40 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 2 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 88 55 0 53 1 0 1 1 0 8 0 rtentry 112 96 0 66 2 0 2 2 0 8 0 unpcb 120 1031 0 1021 1 0 1 1 0 8 0 syncache 272 14 0 14 4 4 0 1 0 8 0 tcpqe 32 1164 0 1164 2 2 0 1 0 8 0 tcpcb 592 319 0 314 8 7 1 2 0 8 0 inpcb 296 2473 0 2465 6 4 2 3 0 8 0 nd6 48 41 0 37 1 0 1 1 0 8 0 pkpcb 40 12 0 12 4 3 1 1 0 8 1 ppxss 1136 2 0 2 2 2 0 1 0 8 0 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pffrag 232 2 0 2 2 2 0 1 0 482 0 pffrnode 88 2 0 2 2 2 0 1 0 8 0 pffrent 40 5 0 5 2 2 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 34 0 23 2 1 1 1 0 8 0 pftag 88 3 0 3 2 2 0 1 0 8 0 pfstitem 24 23 0 21 1 0 1 1 0 8 0 pfstkey 112 27 0 25 1 0 1 1 0 8 0 pfstate 328 25 0 23 2 1 1 2 0 8 0 pfrule 1360 48 0 30 3 1 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 323 0 191 19 8 11 15 0 8 1 art_table 32 324 0 191 2 0 2 2 0 8 0 art_node 16 95 0 66 1 0 1 1 0 8 0 sysvmsgpl 40 17 0 12 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 211 0 201 1 0 1 1 0 8 0 shmpl 112 46 0 11 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 3190 0 1791 89 1 88 89 0 8 0 ffsino 272 3190 0 1791 95 1 94 94 0 8 0 nchpl 144 5057 0 3475 60 0 60 60 0 8 0 uvmvnodes 72 3699 0 0 68 0 68 68 0 8 0 vnodes 208 3699 0 0 195 0 195 195 0 8 0 namei 1024 14202 0 14202 6 5 1 1 0 8 1 percpumem 16 43 0 11 1 0 1 1 0 8 0 vcpupl 1984 7 0 0 1 0 1 1 0 8 0 vmpool 560 12 0 5 1 0 1 1 0 8 0 pfiaddrpl 120 14 0 5 4 3 1 1 0 8 0 scsiplug 72 3 0 3 2 2 0 1 0 8 0 scxspl 200 14056 0 14056 13 12 1 7 0 8 1 plimitpl 152 84 0 76 1 0 1 1 0 8 0 sigapl 424 1416 0 1364 7 1 6 7 0 8 0 futexpl 56 17323 0 17323 5 4 1 1 0 8 1 knotepl 112 162 0 148 2 1 1 2 0 8 0 kqueuepl 152 108 0 106 1 0 1 1 0 8 0 pipepl 304 214 0 206 10 9 1 2 0 8 0 fdescpl 496 1379 0 1364 3 0 3 3 0 8 0 filepl 152 8964 0 8877 9 4 5 6 0 8 1 lockfpl 104 189 0 188 1 0 1 1 0 8 0 lockfspl 48 70 0 69 1 0 1 1 0 8 0 sessionpl 120 19 0 8 1 0 1 1 0 8 0 pgrppl 48 39 0 28 1 0 1 1 0 8 0 ucredpl 96 939 0 930 1 0 1 1 0 8 0 zombiepl 144 1365 0 1364 4 3 1 1 0 8 0 processpl 1008 1416 0 1364 8 1 7 7 0 8 0 procpl 632 3885 0 3826 7 1 6 6 0 8 0 sosppl 144 13 0 12 6 5 1 1 0 8 0 sockpl 400 3581 0 3561 20 16 4 5 0 8 1 mcl64k 65536 12 0 0 2 0 2 2 0 8 0 mcl16k 16384 6 0 0 1 0 1 1 0 8 0 mcl12k 12288 10 0 0 1 0 1 1 0 8 0 mcl9k 9216 5 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 18 0 0 3 0 3 3 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 202 0 0 24 1 23 24 0 8 0 mtagpl 96 56 0 0 2 0 2 2 0 8 0 mbufpl 256 479 0 0 24 0 24 24 0 8 0 bufpl 280 5510 0 128 385 0 385 385 0 8 0 anonpl 16 141862 0 123405 112 34 78 89 0 124 0 amapchunkpl 152 8339 0 8006 35 9 26 27 0 158 11 amappl16 192 5310 0 4468 60 16 44 52 0 8 1 amappl15 184 287 0 285 1 0 1 1 0 8 0 amappl14 176 866 0 860 1 0 1 1 0 8 0 amappl13 168 30 0 27 1 0 1 1 0 8 0 amappl12 160 23 0 21 1 0 1 1 0 8 0 amappl11 152 917 0 901 1 0 1 1 0 8 0 amappl10 144 18 0 12 1 0 1 1 0 8 0 amappl9 136 366 0 365 1 0 1 1 0 8 0 amappl8 128 436 0 367 4 1 3 3 0 8 0 amappl7 120 117 0 106 1 0 1 1 0 8 0 amappl6 112 891 0 884 1 0 1 1 0 8 0 amappl5 104 428 0 412 1 0 1 1 0 8 0 amappl4 96 1361 0 1331 1 0 1 1 0 8 0 amappl3 88 158 0 150 1 0 1 1 0 8 0 amappl2 80 10399 0 10324 2 0 2 2 0 8 0 amappl1 72 50685 0 50220 23 13 10 18 0 8 0 amappl 80 4171 0 4076 3 0 3 3 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 48 0 9 1 0 1 1 0 8 0 uaddrrnd 24 1391 0 1369 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1391 0 1369 1 0 1 1 0 8 0 vmmpekpl 168 14522 0 14484 2 0 2 2 0 8 0 vmmpepl 168 183730 0 181651 164 66 98 147 0 357 1 vmsppl 368 1390 0 1369 3 0 3 3 0 8 1 pdppl 4096 2789 0 2745 7 1 6 6 0 8 0 pvpl 32 438666 0 416695 282 102 180 208 0 265 2 pmappl 232 1390 0 1369 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 307 0 40 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(ffffffff827b8ff0) 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+0x58 sys/dev/kcov.c:118 intr_handler(ffff800020e2a750,ffff80000065bd80) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge4_untramp() at Xintr_ioapic_edge4_untramp+0x19f end of kernel end trace frame: 0x7f7ffffc9328, count: -6 ddb{0}> machine ddbcpu 1 Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> trace in_delmulti(b) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b2ef00) 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+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(ffff800023f1e840) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806e66c5b8,7,fffffd807f7bf840,ffff800023f9f3f0) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8066e7f740,ffff800023f9f3f0) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8066e7f740,ffff800023f9f3f0) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd8066e7f740,ffff800023f9f3f0) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8066e7f740,ffff800023f9f3f0) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800023f9f3f0) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800023f9f3f0,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff800023f9f3f0,ffff800023f1ead0,ffff800023f1eb20) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800023f1eba0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023f1eba0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe3280, count: -16