uvm_fault(0xffffffff82795140, 0xfffffeffffffc00b, 0, 1) -> e kernel: page 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 kernel page fault uvm_fault(0xffffffff82795140, 0xfffffeffffffc00b, 0, 1) -> e in_delmulti(fffffeffffffbfff) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff80001e7a8bb0, count: 0 ddb> trace in_delmulti(fffffeffffffbfff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b3c700) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ae9000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ae9000) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000ae9000) at tun_clone_destroy+0x1c7 sys/net/if_tun.c:326 ifioctl(fffffd806934aaf0,80206979,ffff80001e7a8d80,ffff80001d6f7880) at ifioctl+0x3de sys/net/if.c:1828 sys_ioctl(ffff80001d6f7880,ffff80001e7a8e98,ffff80001e7a8ee0) at sys_ioctl+0x4a1 syscall(ffff80001e7a8f60) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd671dd252b0, count: -9 ddb> show registers rdi 0xffffffff81e46f2d in_delmulti+0x8d rsi 0x147a3 acpi_pdirpa+0x60b rbp 0xffff80001e7a8b60 rbx 0 rdx 0x147a4 acpi_pdirpa+0x60c rcx 0xffff8000209a4000 rax 0xffff8000209a4000 r8 0xffffffff818ebc13 rt_ifa_purge+0x153 r9 0x5 r10 0xf89fb52f1f8a3f99 r11 0x16eb242a30566ff8 r12 0 r13 0x8da1216f __kernel_virt_to_phys+0xda1216f r14 0xfffffeffffffbfff r15 0x1 rip 0xffffffff81e46f2d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001e7a8b00 ss 0 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> show proc PROC (syz-executor.0) pid=466080 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=79, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6f6c50,0xffffffff827f1030 process=0xffff80001d6eeb10 user=0xffff80001e7a4000, vmspace=0xfffffd806aa499a0 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 79699 401604 84491 0 3 0x80 nanosleep syz-executor.0 *79699 466080 84491 0 7 0x4000000 syz-executor.0 84491 54516 61515 0 3 0x82 nanosleep syz-executor.0 45074 138617 0 0 3 0x14200 acct acct 39731 376969 1 0 3 0x100083 ttyin getty 29415 198900 0 0 3 0x14280 nfsidl nfsio 44159 400434 0 0 3 0x14280 nfsidl nfsio 29363 281568 0 0 3 0x14280 nfsidl nfsio 25537 275290 0 0 3 0x14280 nfsidl nfsio 23783 328077 0 0 3 0x14280 nfsidl nfsio 45892 33994 0 0 3 0x14280 nfsidl nfsio 6992 34697 0 0 3 0x14280 nfsidl nfsio 80992 413708 0 0 3 0x14280 nfsidl nfsio 71526 173489 0 0 3 0x14280 nfsidl nfsio 85887 401907 0 0 3 0x14280 nfsidl nfsio 5678 298884 0 0 3 0x14280 nfsidl nfsio 44097 226290 0 0 3 0x14280 nfsidl nfsio 86540 105057 0 0 3 0x14280 nfsidl nfsio 45916 103470 0 0 3 0x14280 nfsidl nfsio 96814 309907 0 0 3 0x14280 nfsidl nfsio 66746 202181 0 0 3 0x14280 nfsidl nfsio 25458 197394 0 0 3 0x14280 nfsidl nfsio 47435 23820 0 0 3 0x14280 nfsidl nfsio 64389 5981 0 0 3 0x14280 nfsidl nfsio 9298 81568 0 0 3 0x14280 nfsidl nfsio 7788 444126 0 0 3 0x14200 bored sosplice 681 415265 61515 0 3 0x82 piperd syz-executor.1 61515 163901 65468 0 3 0x82 thrsleep syz-fuzzer 61515 352727 65468 0 3 0x4000082 nanosleep syz-fuzzer 61515 397970 65468 0 2 0x4000002 syz-fuzzer 61515 487644 65468 0 3 0x4000082 thrsleep syz-fuzzer 61515 443024 65468 0 3 0x4000082 thrsleep syz-fuzzer 61515 416682 65468 0 3 0x4000082 thrsleep syz-fuzzer 61515 202824 65468 0 3 0x4000082 thrsleep syz-fuzzer 61515 330613 65468 0 3 0x4000082 thrsleep syz-fuzzer 65468 230926 94822 0 3 0x10008a pause ksh 94822 208031 29099 0 3 0x92 select sshd 29099 171187 1 0 3 0x80 select sshd 62891 181762 85116 73 3 0x100090 kqread syslogd 85116 37190 1 0 3 0x100082 netio syslogd 78796 53837 1 77 3 0x100090 poll dhclient 10572 277290 1 0 3 0x80 poll dhclient 86602 154235 0 0 3 0x14200 bored smr 44096 247356 0 0 2 0x14200 zerothread 76553 208908 0 0 3 0x14200 aiodoned aiodoned 37742 371481 0 0 3 0x14200 syncer update 69121 134534 0 0 3 0x14200 cleaner cleaner 98786 360225 0 0 3 0x14200 reaper reaper 6205 435526 0 0 3 0x14200 pgdaemon pagedaemon 91892 184455 0 0 3 0x14200 bored crynlk 87823 474210 0 0 3 0x14200 bored crypto 83662 155333 0 0 3 0x40014200 acpi0 acpi0 74419 393777 0 0 3 0x14200 bored softnet 84571 139121 0 0 3 0x14200 bored systqmp 79696 350126 0 0 2 0x14200 systq 90432 479472 0 0 3 0x40014200 bored softclock 75442 430895 0 0 3 0x40014200 idle0 1 146685 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 9525 6438K 7539K 78643K 18333 0 pcb 13 8K 8K 78643K 275 0 rtable 106 9K 11K 78643K 885 0 ifaddr 115 24K 25K 78643K 339 0 sysctl 3 1K 1K 78643K 3 0 counters 21 16K 17K 78643K 48 0 ioctlops 0 0K 4K 78643K 289 0 iov 0 0K 28K 78643K 243 0 mount 1 1K 1K 78643K 1 0 vnodes 1222 77K 77K 78643K 3138 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 29 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 417 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 1858 0 sigio 0 0K 0K 78643K 21 0 proc 49 38K 63K 78643K 619 0 subproc 32 2K 2K 78643K 68 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 136 0 in_multi 138 6K 6K 78643K 349 0 ether_multi 1 0K 0K 78643K 50 0 mrt 0 0K 0K 78643K 23 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 79 360K 360K 78643K 79 0 exec 0 0K 1K 78643K 343 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 151 137K 157K 78643K 5130 0 UVM aobj 85 3K 3K 78643K 96 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 1K 78643K 235 0 NDP 14 0K 0K 78643K 63 0 temp 143 3870K 3942K 78643K 70133 0 kqueue 3 4K 12K 78643K 86 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 15 0 9 1 0 1 1 0 8 0 rtpcb 80 92 0 90 1 0 1 1 0 8 0 rtentry 112 133 0 104 2 0 2 2 0 8 0 unpcb 120 1061 0 1053 1 0 1 1 0 8 0 syncache 264 11 0 11 5 5 0 1 0 8 0 tcpqe 32 83 0 83 1 1 0 1 0 8 0 tcpcb 544 531 0 526 9 8 1 2 0 8 0 ipq 40 9 0 9 5 5 0 1 0 8 0 ipqe 40 153 0 153 5 5 0 1 0 8 0 inpcb 296 3897 0 3885 7 5 2 2 0 8 1 rttmr 72 8 0 8 5 5 0 1 0 8 0 nd6 48 31 0 30 1 0 1 1 0 8 0 pkpcb 40 6 0 6 2 2 0 1 0 8 0 ppxss 1136 9 0 9 5 4 1 1 0 8 1 pfstscr 40 6 0 5 2 1 1 1 0 8 0 pfosfp 40 1 0 0 1 0 1 1 0 8 0 pfosfpen 112 1 0 0 1 0 1 1 0 8 0 pfrktable 1344 115 0 103 5 4 1 2 0 8 0 pftag 88 20 0 16 1 0 1 1 0 8 0 pfstitem 24 6 0 4 1 0 1 1 0 8 0 pfstkey 112 12 0 10 2 1 1 1 0 8 0 pfstate 328 6 0 5 2 1 1 1 0 8 0 pfrule 1360 82 0 40 4 0 4 4 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 608 0 452 16 5 11 12 0 8 0 art_table 32 609 0 452 2 0 2 2 0 8 0 art_node 16 132 0 107 1 0 1 1 0 8 0 sysvmsgpl 40 24 0 12 2 1 1 1 0 8 0 semupl 112 3 0 3 2 2 0 1 0 8 0 semapl 112 409 0 399 1 0 1 1 0 8 0 shmpl 112 93 0 11 3 0 3 3 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 3799 0 2406 88 0 88 88 0 8 0 ffsino 240 3799 0 2406 83 0 83 83 0 8 0 nchpl 144 6593 0 5015 60 0 60 60 0 8 0 uvmvnodes 72 5535 0 0 101 0 101 101 0 8 0 vnodes 208 5535 0 0 292 0 292 292 0 8 0 namei 1024 19691 0 19691 6 5 1 1 0 8 1 vcpupl 1984 12 0 1 2 0 2 2 0 8 0 vmpool 528 19 0 8 1 0 1 1 0 8 0 pfiaddrpl 120 44 0 26 1 0 1 1 0 8 0 scsiplug 64 2 0 2 2 2 0 1 0 8 0 scxspl 192 20151 0 20151 3 2 1 1 0 8 1 plimitpl 152 120 0 113 1 0 1 1 0 8 0 sigapl 424 2061 0 2011 6 0 6 6 0 8 0 futexpl 56 39795 0 39795 5 4 1 1 0 8 1 knotepl 112 185 0 166 1 0 1 1 0 8 0 kqueuepl 144 217 0 211 1 0 1 1 0 8 0 pipepl 272 302 0 292 2 1 1 2 0 8 0 fdescpl 432 2025 0 2011 2 0 2 2 0 8 0 filepl 120 13899 0 13802 5 1 4 4 0 8 1 lockfpl 104 394 0 393 1 0 1 1 0 8 0 lockfspl 48 123 0 122 1 0 1 1 0 8 0 sessionpl 112 20 0 10 1 0 1 1 0 8 0 pgrppl 48 30 0 20 1 0 1 1 0 8 0 ucredpl 96 1538 0 1531 1 0 1 1 0 8 0 zombiepl 144 2011 0 2011 2 1 1 1 0 8 1 processpl 928 2061 0 2011 7 0 7 7 0 8 0 procpl 624 4251 0 4193 7 2 5 6 0 8 0 sosppl 128 33 0 33 8 8 0 1 0 8 0 sockpl 400 5069 0 5049 14 10 4 4 0 8 2 mcl64k 65536 354 0 354 40 40 0 33 0 8 0 mcl16k 16384 9 0 9 7 7 0 1 0 8 0 mcl12k 12288 46 0 46 9 9 0 1 0 8 0 mcl9k 9216 28 0 28 8 8 0 1 0 8 0 mcl8k 8192 76 0 76 8 7 1 1 0 8 1 mcl4k 4096 146 0 146 8 7 1 1 0 8 1 mcl2k2 2112 11 0 11 9 9 0 1 0 8 0 mcl2k 2048 98891 0 98850 16 10 6 13 0 8 0 mtagpl 96 149 0 147 3 1 2 2 0 8 1 mbufpl 256 167203 0 167140 40 27 13 27 0 8 3 bufpl 280 7230 0 1878 383 0 383 383 0 8 0 anonpl 16 204528 0 187278 124 54 70 85 0 107 0 amapchunkpl 152 10477 0 10342 60 54 6 20 0 158 0 amappl16 192 9926 0 8973 83 35 48 60 0 8 0 amappl15 184 831 0 827 1 0 1 1 0 8 0 amappl14 176 165 0 161 1 0 1 1 0 8 0 amappl13 168 41 0 38 1 0 1 1 0 8 0 amappl12 160 12 0 9 1 0 1 1 0 8 0 amappl11 152 194 0 185 1 0 1 1 0 8 0 amappl10 144 17 0 11 1 0 1 1 0 8 0 amappl9 136 1189 0 1187 1 0 1 1 0 8 0 amappl8 128 1255 0 1206 2 0 2 2 0 8 0 amappl7 120 119 0 108 1 0 1 1 0 8 0 amappl6 112 28 0 20 2 1 1 1 0 8 0 amappl5 104 1856 0 1842 1 0 1 1 0 8 0 amappl4 96 613 0 585 1 0 1 1 0 8 0 amappl3 88 307 0 301 1 0 1 1 0 8 0 amappl2 80 16102 0 16033 2 0 2 2 0 8 0 amappl1 72 54033 0 53617 23 13 10 17 0 8 0 amappl 80 4528 0 4476 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 95 0 11 2 0 2 2 0 8 0 uaddrrnd 24 2044 0 2019 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2044 0 2019 1 0 1 1 0 8 0 vmmpekpl 168 14592 0 14553 2 0 2 2 0 8 0 vmmpepl 168 249449 0 247369 218 121 97 128 0 357 0 vmsppl 272 2043 0 2019 3 1 2 2 0 8 0 pdppl 4096 4094 0 4049 7 1 6 6 0 8 0 pvpl 32 549711 0 529328 272 105 167 200 0 265 0 pmappl 200 2043 0 2019 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 364 0 133 8 0 8 8 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace in_delmulti(fffffeffffffbfff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b3c700) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ae9000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ae9000) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000ae9000) at tun_clone_destroy+0x1c7 sys/net/if_tun.c:326 ifioctl(fffffd806934aaf0,80206979,ffff80001e7a8d80,ffff80001d6f7880) at ifioctl+0x3de sys/net/if.c:1828 sys_ioctl(ffff80001d6f7880,ffff80001e7a8e98,ffff80001e7a8ee0) at sys_ioctl+0x4a1 syscall(ffff80001e7a8f60) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd671dd252b0, count: -9 ddb> machine ddbcpu 1 No such command ddb> trace in_delmulti(fffffeffffffbfff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b3c700) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ae9000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ae9000) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000ae9000) at tun_clone_destroy+0x1c7 sys/net/if_tun.c:326 ifioctl(fffffd806934aaf0,80206979,ffff80001e7a8d80,ffff80001d6f7880) at ifioctl+0x3de sys/net/if.c:1828 sys_ioctl(ffff80001d6f7880,ffff80001e7a8e98,ffff80001e7a8ee0) at sys_ioctl+0x4a1 syscall(ffff80001e7a8f60) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd671dd252b0, count: -9