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(0xfffffd807efff8a0, 0xb, 0, 1) -> e in_delmulti(ffffffffffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff800021f1c3d0, count: 0 ddb{1}> trace in_delmulti(ffffffffffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000af9200) 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(5d00,7) at tun_dev_close+0x160 sys/net/if_tun.c:477 spec_close(ffff800021f1c5b0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd807a9db278,7,fffffd807f7bf9c0,ffff800021f93b50) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd806ca8fee8,ffff800021f93b50) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd806ca8fee8,ffff800021f93b50) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd806ca8fee8,ffff800021f93b50) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd806ca8fee8,ffff800021f93b50) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800021f93b50) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800021f93b50,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff800021f93b50,ffff800021f1c840,ffff800021f1c890) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800021f1c910) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021f1c910) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff5860, count: -16 ddb{1}> show registers rdi 0x2 rsi 0 rbp 0xffff800021f1c380 rbx 0 rdx 0 rcx 0 rax 0xffff800021f93b50 r8 0xffff800000af9200 r9 0xffffffff821cd043 rt_ifa_purge+0x153 r10 0x5 r11 0x1ca5df02a491cfd0 r12 0 r13 0x3 r14 0xffffffffffffffff r15 0x1 rip 0xffffffff821c82ed in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800021f1c320 ss 0 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> show proc PROC (syz-executor.0) pid=47008 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800021f92c80,0xffffffff828ed090 process=0xffff800021f7e000 user=0xffff800021f17000, vmspace=0xfffffd807efff8a0 estcpu=36, cpticks=2, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 32683 433040 0 0 3 0x14280 nfsidl nfsio 1719 244926 0 0 3 0x14280 nfsidl nfsio 27019 316796 0 0 3 0x14280 nfsidl nfsio 77691 366799 0 0 3 0x14280 nfsidl nfsio 27682 367876 0 0 3 0x14280 nfsidl nfsio 46335 520357 0 0 3 0x14280 nfsidl nfsio 89232 272569 0 0 3 0x14280 nfsidl nfsio 54688 314341 0 0 3 0x14280 nfsidl nfsio 50148 129720 0 0 3 0x14280 nfsidl nfsio 13324 185455 0 0 3 0x14280 nfsidl nfsio 16298 425805 0 0 3 0x14280 nfsidl nfsio 90607 224618 0 0 3 0x14280 nfsidl nfsio 11331 52286 0 0 3 0x14280 nfsidl nfsio 88579 164997 0 0 3 0x14280 nfsidl nfsio 22800 452156 0 0 3 0x14280 nfsidl nfsio 54823 330096 0 0 3 0x14280 nfsidl nfsio 47399 319271 0 0 3 0x14280 nfsidl nfsio 84562 116053 0 0 3 0x14280 nfsidl nfsio 86870 408260 0 0 3 0x14280 nfsidl nfsio 12940 209990 0 0 3 0x14280 nfsidl nfsio 1010 319262 0 0 3 0x14200 bored sosplice 62701 154748 0 0 3 0x14200 acct acct 76570 73351 94155 0 2 0x2 syz-executor.1 94155 201264 5687 0 3 0x82 thrsleep syz-fuzzer 94155 127711 5687 0 3 0x4000082 nanosleep syz-fuzzer 94155 289657 5687 0 3 0x4000082 thrsleep syz-fuzzer 94155 177639 5687 0 7 0x4000002 syz-fuzzer 94155 251236 5687 0 2 0x4000002 syz-fuzzer 94155 372126 5687 0 3 0x4000082 thrsleep syz-fuzzer 94155 157027 5687 0 3 0x4000082 thrsleep syz-fuzzer 94155 302466 5687 0 3 0x4000082 thrsleep syz-fuzzer 5687 122121 19957 0 3 0x10008a pause ksh 19957 68142 39426 0 3 0x92 select sshd 66541 507858 1 0 3 0x100083 ttyopn getty 39426 353738 1 0 3 0x80 select sshd 87976 240812 66861 74 3 0x100092 bpf pflogd 66861 489633 1 0 3 0x80 netio pflogd 56820 416046 87973 73 3 0x100090 kqread syslogd 87973 211719 1 0 3 0x100082 netio syslogd 5318 140424 1 77 2 0x100090 dhclient 84782 93381 1 0 3 0x80 poll dhclient 33760 463191 0 0 3 0x14200 bored smr 81595 153057 0 0 2 0x14200 zerothread 92229 324049 0 0 3 0x14200 aiodoned aiodoned 48633 314204 0 0 3 0x14200 syncer update 87962 521785 0 0 3 0x14200 cleaner cleaner 53094 518489 0 0 3 0x14200 reaper reaper 54078 508451 0 0 3 0x14200 pgdaemon pagedaemon 9937 137835 0 0 3 0x14200 bored crynlk 48803 174304 0 0 3 0x14200 bored crypto 5865 222543 0 0 3 0x40014200 acpi0 acpi0 9718 311179 0 0 3 0x40014200 idle1 27821 383250 0 0 3 0x14200 bored softnet 57258 1128 0 0 2 0x14200 systqmp 99632 442389 0 0 3 0x14200 bored systq 30262 183934 0 0 3 0x40014200 bored softclock 62869 227575 0 0 3 0x40014200 idle0 1 443370 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 6423K 6816K 78643K 12173 0 pcb 13 8K 8K 78643K 66 0 rtable 94 4K 7K 78643K 445 0 ifaddr 92 17K 19K 78643K 172 0 counters 43 33K 34K 78643K 57 0 ioctlops 0 0K 4K 78643K 1563 0 iov 0 0K 16K 78643K 62 0 mount 1 1K 1K 78643K 1 0 vnodes 1222 77K 77K 78643K 1762 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 17 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 139 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 4 9K 25K 78643K 577 0 sigio 0 0K 0K 78643K 53 0 proc 63 63K 83K 78643K 483 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 47 0 in_multi 68 3K 3K 78643K 112 0 ether_multi 1 0K 0K 78643K 9 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 67 307K 307K 78643K 67 0 exec 0 0K 1K 78643K 233 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 164 26K 42K 78643K 2904 0 UVM aobj 39 7K 7K 78643K 40 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 47 0 NDP 15 0K 0K 78643K 28 0 temp 142 3874K 3938K 78643K 5141 0 kqueue 3 4K 13K 78643K 28 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 9 0 3 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 88 48 0 46 1 0 1 1 0 8 0 rtentry 112 65 0 31 2 0 2 2 0 8 0 unpcb 120 275 0 265 1 0 1 1 0 8 0 syncache 272 4 0 4 1 1 0 1 0 8 0 tcpqe 32 30 0 30 1 1 0 1 0 8 0 tcpcb 592 128 0 119 3 2 1 2 0 8 0 inpcb 296 449 0 442 5 3 2 2 0 8 1 nd6 48 9 0 4 1 0 1 1 0 8 0 pkpcb 40 4 0 4 1 1 0 1 0 8 0 ppxss 1136 1 0 1 1 1 0 1 0 8 0 pfstscr 40 4 0 4 1 1 0 1 0 8 0 pffrag 232 4 0 4 1 1 0 1 0 482 0 pffrnode 88 4 0 4 1 1 0 1 0 8 0 pffrent 40 141 0 141 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 48 0 47 3 2 1 1 0 8 0 pftag 88 2 0 2 1 1 0 1 0 8 0 pfstitem 24 30 0 16 1 0 1 1 0 8 0 pfstkey 112 32 0 18 1 0 1 1 0 8 0 pfstate 328 32 0 18 3 0 3 3 0 8 0 pfrule 1360 40 0 32 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 326 0 134 15 3 12 13 0 8 0 art_table 32 327 0 134 2 0 2 2 0 8 0 art_node 16 64 0 30 1 0 1 1 0 8 0 sysvmsgpl 40 41 0 24 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 133 0 123 1 0 1 1 0 8 0 shmpl 112 37 0 1 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2141 0 738 88 0 88 88 0 8 0 ffsino 272 2141 0 738 94 0 94 94 0 8 0 nchpl 144 3268 0 1678 60 0 60 60 0 8 0 uvmvnodes 72 2670 0 0 49 0 49 49 0 8 0 vnodes 208 2670 0 0 141 0 141 141 0 8 0 namei 1024 8990 0 8990 2 1 1 1 0 8 1 percpumem 16 39 0 7 1 0 1 1 0 8 0 vmpool 560 4 0 4 2 2 0 1 0 8 0 pfiaddrpl 120 13 0 13 3 3 0 1 0 8 0 scxspl 200 9531 0 9531 13 12 1 7 0 8 1 plimitpl 152 51 0 43 1 0 1 1 0 8 0 sigapl 424 814 0 762 7 0 7 7 0 8 0 futexpl 56 7595 0 7595 2 1 1 1 0 8 1 knotepl 112 103 0 89 1 0 1 1 0 8 0 kqueuepl 152 310 0 306 1 0 1 1 0 8 0 pipepl 304 149 0 141 3 1 2 2 0 8 1 fdescpl 496 777 0 762 3 0 3 3 0 8 0 filepl 152 4516 0 4429 6 0 6 6 0 8 2 lockfpl 104 108 0 107 1 0 1 1 0 8 0 lockfspl 48 41 0 40 1 0 1 1 0 8 0 sessionpl 120 18 0 7 1 0 1 1 0 8 0 pgrppl 48 28 0 17 1 0 1 1 0 8 0 ucredpl 96 408 0 397 1 0 1 1 0 8 0 zombiepl 144 763 0 762 1 0 1 1 0 8 0 processpl 1008 814 0 762 7 0 7 7 0 8 0 procpl 632 2102 0 2043 6 0 6 6 0 8 0 sosppl 144 10 0 10 3 2 1 1 0 8 1 sockpl 400 777 0 758 5 2 3 4 0 8 1 mcl64k 65536 11 0 0 2 0 2 2 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 7 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 6 0 0 1 0 1 1 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 178 0 0 22 0 22 22 0 8 0 mtagpl 96 28 0 0 1 0 1 1 0 8 0 mbufpl 256 271 0 0 15 0 15 15 0 8 0 bufpl 280 4475 0 126 311 0 311 311 0 8 0 anonpl 16 85924 0 67541 85 5 80 83 0 124 5 amapchunkpl 152 4876 0 4592 26 13 13 25 0 158 0 amappl16 192 2843 0 1962 47 2 45 46 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 548 0 541 1 0 1 1 0 8 0 amappl13 168 30 0 26 1 0 1 1 0 8 0 amappl12 160 23 0 18 1 0 1 1 0 8 0 amappl11 152 600 0 583 1 0 1 1 0 8 0 amappl10 144 17 0 15 1 0 1 1 0 8 0 amappl9 136 365 0 363 1 0 1 1 0 8 0 amappl8 128 361 0 316 2 0 2 2 0 8 0 amappl7 120 114 0 102 1 0 1 1 0 8 0 amappl6 112 28 0 24 1 0 1 1 0 8 0 amappl5 104 141 0 126 1 0 1 1 0 8 0 amappl4 96 1043 0 1009 1 0 1 1 0 8 0 amappl3 88 685 0 675 1 0 1 1 0 8 0 amappl2 80 5305 0 5238 2 0 2 2 0 8 0 amappl1 72 32362 0 31894 24 14 10 18 0 8 0 amappl 80 2368 0 2293 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 39 0 1 1 0 1 1 0 8 0 uaddrrnd 24 781 0 766 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 781 0 766 1 0 1 1 0 8 0 vmmpekpl 168 9798 0 9757 3 0 3 3 0 8 0 vmmpepl 168 106593 0 104537 121 22 99 111 0 357 4 vmsppl 368 780 0 766 2 0 2 2 0 8 0 pdppl 4096 1569 0 1532 6 0 6 6 0 8 0 pvpl 32 276884 0 255290 200 6 194 197 0 265 17 pmappl 232 780 0 766 3 2 1 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 263 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(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_cmp4(ffffffff828c5a80,ffffffff828c5a80) at __sanitizer_cov_trace_cmp4+0xb kd_curproc sys/dev/kcov.c:162 [inline] __sanitizer_cov_trace_cmp4(ffffffff828c5a80,ffffffff828c5a80) at __sanitizer_cov_trace_cmp4+0xb trace_cmp sys/dev/kcov.c:134 [inline] __sanitizer_cov_trace_cmp4(ffffffff828c5a80,ffffffff828c5a80) at __sanitizer_cov_trace_cmp4+0xb sys/dev/kcov.c:163 intr_handler(ffff800020e887d0,ffff80000065bd80) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge4_untramp() at Xintr_ioapic_edge4_untramp+0x19f __mp_lock(ffffffff828c5a80) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828c5a80) at __mp_lock+0x127 sys/kern/kern_lock.c:147 uvm_map_inentry(ffff8000fffff648,ffff8000fffff6a8,c00003a738,ffffffff8242b3c8,ffffffff81bdb0d0,5e) at uvm_map_inentry+0xbe sys/uvm/uvm_map.c:1890 syscall(ffff800020e88a30) at syscall+0x397 mi_syscall sys/sys/syscall_mi.h:81 [inline] syscall(ffff800020e88a30) at syscall+0x397 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc00003a750, 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(ffff800000af9200) 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(5d00,7) at tun_dev_close+0x160 sys/net/if_tun.c:477 spec_close(ffff800021f1c5b0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd807a9db278,7,fffffd807f7bf9c0,ffff800021f93b50) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd806ca8fee8,ffff800021f93b50) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd806ca8fee8,ffff800021f93b50) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd806ca8fee8,ffff800021f93b50) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd806ca8fee8,ffff800021f93b50) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800021f93b50) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800021f93b50,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff800021f93b50,ffff800021f1c840,ffff800021f1c890) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800021f1c910) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021f1c910) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff5860, count: -16