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, 0x3fff7edf00b, 0, 1) -> e in_delmulti(3fff7edefff) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff800021f1b960, count: 0 ddb{1}> trace in_delmulti(3fff7edefff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b1b700) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac4000) at in_ifdetach+0x74 sys/netinet/in.c:971 ifioctl(fffffd806f662960,801169ac,ffff800021f1baf0,ffff800020e034f8) at ifioctl+0x1473 sys/net/if.c:1873 soo_ioctl(fffffd8067df2c90,801169ac,ffff800021f1baf0,ffff800020e034f8) at soo_ioctl+0x27c sys/kern/sys_socket.c:138 sys_ioctl(ffff800020e034f8,ffff800021f1bc08,ffff800021f1bc50) at sys_ioctl+0x4a5 syscall(ffff800021f1bcd0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021f1bcd0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x594cec668c0, count: -8 ddb{1}> show registers rdi 0xffff800020ed9000 rsi 0xba8c __ALIGN_SIZE+0xaa8c rbp 0xffff800021f1b910 rbx 0 rdx 0xffff800020ed9000 rcx 0xba8b __ALIGN_SIZE+0xaa8b rax 0xffffffff819aa3cd in_delmulti+0x8d r8 0xffff800000b1b700 r9 0xffffffff81968e83 rt_ifa_purge+0x153 r10 0x5 r11 0x4e65241fa5e88065 r12 0 r13 0 r14 0x3fff7edefff r15 0x1 rip 0xffffffff819aa3cd in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800021f1b8b0 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> show proc PROC (syz-executor.0) pid=433763 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=79, nice=20 forw=0xffffffffffffffff, list=0xffff800020e039d8,0xffffffff828f12a8 process=0xffff800021ef6030 user=0xffff800021f16000, vmspace=0xfffffd807efff170 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 53390 205282 94642 0 2 0 syz-executor.0 *53390 433763 94642 0 7 0x4000000 syz-executor.0 43710 45865 0 0 3 0x14280 nfsidl nfsio 50700 294216 0 0 3 0x14280 nfsidl nfsio 41601 35026 0 0 3 0x14280 nfsidl nfsio 84975 296544 0 0 3 0x14280 nfsidl nfsio 6680 312992 0 0 3 0x14280 nfsidl nfsio 7164 353607 0 0 3 0x14280 nfsidl nfsio 60949 351534 0 0 3 0x14280 nfsidl nfsio 11087 438486 0 0 3 0x14280 nfsidl nfsio 12735 264236 0 0 3 0x14280 nfsidl nfsio 36253 495522 0 0 3 0x14280 nfsidl nfsio 33702 264201 0 0 3 0x14280 nfsidl nfsio 6980 3068 0 0 3 0x14280 nfsidl nfsio 74936 447446 0 0 3 0x14280 nfsidl nfsio 72994 251763 0 0 3 0x14280 nfsidl nfsio 30528 366600 0 0 3 0x14280 nfsidl nfsio 75806 518158 0 0 3 0x14280 nfsidl nfsio 58117 47815 0 0 3 0x14280 nfsidl nfsio 95757 389398 0 0 3 0x14280 nfsidl nfsio 57431 224573 0 0 3 0x14280 nfsidl nfsio 37996 463306 0 0 3 0x14280 nfsidl nfsio 94228 469609 9505 0 3 0x82 piperd syz-executor.1 50384 185425 0 0 3 0x14200 bored sosplice 94642 370657 9505 0 3 0x82 nanosleep syz-executor.0 9505 497592 652 0 2 0x2 syz-fuzzer 9505 33062 652 0 3 0x4000082 nanosleep syz-fuzzer 9505 185162 652 0 3 0x4000082 thrsleep syz-fuzzer 9505 503590 652 0 3 0x4000082 thrsleep syz-fuzzer 9505 297353 652 0 3 0x4000082 kqread syz-fuzzer 9505 98264 652 0 3 0x4000082 thrsleep syz-fuzzer 9505 88649 652 0 3 0x4000082 thrsleep syz-fuzzer 9505 490837 652 0 3 0x4000082 thrsleep syz-fuzzer 652 467472 90742 0 3 0x10008a pause ksh 90742 24752 42187 0 3 0x92 select sshd 25436 115816 1 0 3 0x100083 ttyin getty 42187 364157 1 0 3 0x80 select sshd 6898 123300 61966 74 3 0x100092 bpf pflogd 61966 420321 1 0 3 0x80 netio pflogd 71403 195503 74731 73 3 0x100090 kqread syslogd 74731 135529 1 0 3 0x100082 netio syslogd 98274 36245 1 77 7 0x100090 dhclient 26277 367147 1 0 3 0x80 poll dhclient 19402 451230 0 0 3 0x14200 bored smr 85103 433621 0 0 2 0x14200 zerothread 55761 165169 0 0 3 0x14200 aiodoned aiodoned 88228 217299 0 0 3 0x14200 syncer update 62987 228629 0 0 3 0x14200 cleaner cleaner 56144 296223 0 0 3 0x14200 reaper reaper 59379 398246 0 0 3 0x14200 pgdaemon pagedaemon 74517 98689 0 0 3 0x14200 bored crynlk 89303 172902 0 0 3 0x14200 bored crypto 32449 321361 0 0 3 0x40014200 acpi0 acpi0 60665 248070 0 0 3 0x40014200 idle1 64554 463223 0 0 3 0x14200 bored softnet 92509 36939 0 0 2 0x14200 systqmp 52688 481245 0 0 3 0x14200 bored systq 48015 410242 0 0 3 0x40014200 bored softclock 93809 337162 0 0 3 0x40014200 idle0 1 239111 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 53390 (syz-executor.0) thread 0xffff800020e034f8 (433763) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9537 6489K 7127K 78643K 13767 0 pcb 13 8K 8K 78643K 141 0 rtable 93 6K 9K 78643K 552 0 ifaddr 93 18K 18K 78643K 203 0 counters 43 33K 34K 78643K 71 0 ioctlops 0 0K 4K 78643K 1656 0 iov 0 0K 16K 78643K 90 0 mount 1 1K 1K 78643K 1 0 vnodes 1226 77K 77K 78643K 2770 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 11 0K 1K 78643K 169 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 898 0 sigio 0 0K 0K 78643K 21 0 proc 61 63K 95K 78643K 525 0 subproc 32 2K 2K 78643K 51 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 52 0 in_multi 69 3K 3K 78643K 180 0 ether_multi 1 0K 0K 78643K 12 0 mrt 0 0K 0K 78643K 8 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 43 201K 201K 78643K 43 0 exec 0 0K 1K 78643K 278 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 196 62K 63K 78643K 3835 0 UVM aobj 42 3K 3K 78643K 55 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 120 0 NDP 14 0K 0K 78643K 41 0 temp 134 3867K 3931K 78643K 11833 0 kqueue 3 4K 18K 78643K 59 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 5 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 75 0 73 1 0 1 1 0 8 0 rtentry 112 99 0 70 2 0 2 2 0 8 0 unpcb 120 493 0 483 1 0 1 1 0 8 0 syncache 264 10 0 10 3 3 0 1 0 8 0 tcpqe 32 30 0 30 3 3 0 1 0 8 0 tcpcb 544 261 0 255 3 2 1 2 0 8 0 inpcb 296 863 0 854 3 1 2 2 0 8 1 rttmr 72 4 0 4 3 2 1 1 0 8 1 nd6 48 28 0 24 1 0 1 1 0 8 0 pkpcb 40 6 0 6 2 1 1 1 0 8 1 ppxss 1136 2 0 2 2 2 0 1 0 8 0 pfstscr 40 4 0 4 1 1 0 1 0 8 0 pffrag 232 1 0 0 1 0 1 1 0 482 0 pffrnode 88 1 0 0 1 0 1 1 0 8 0 pffrent 40 9 0 8 1 0 1 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 29 1 0 1 1 0 8 0 pfstitem 24 16 0 11 1 0 1 1 0 8 0 pfstkey 112 24 0 19 1 0 1 1 0 8 0 pfstate 328 20 0 15 2 1 1 2 0 8 0 pfrule 1360 33 0 23 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 463 0 326 17 6 11 15 0 8 1 art_table 32 465 0 326 2 0 2 2 0 8 0 art_node 16 98 0 70 1 0 1 1 0 8 0 sysvmsgpl 40 21 0 8 1 0 1 1 0 8 0 semupl 112 5 0 5 2 1 1 1 0 8 1 semapl 112 159 0 150 1 0 1 1 0 8 0 shmpl 112 52 0 13 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2477 0 1079 88 0 88 88 0 8 0 ffsino 272 2477 0 1079 94 0 94 94 0 8 0 nchpl 144 3904 0 2309 60 0 60 60 0 8 0 uvmvnodes 72 4005 0 0 73 0 73 73 0 8 0 vnodes 208 4005 0 0 211 0 211 211 0 8 0 namei 1024 11878 0 11878 2 1 1 1 0 8 1 percpumem 16 46 0 14 1 0 1 1 0 8 0 vcpupl 1984 2 0 0 1 0 1 1 0 8 0 vmpool 560 6 0 4 1 0 1 1 0 8 0 pfiaddrpl 120 12 0 10 1 0 1 1 0 8 0 scxspl 192 11555 0 11555 12 9 3 7 0 8 3 plimitpl 152 57 0 49 1 0 1 1 0 8 0 sigapl 424 1131 0 1079 6 0 6 6 0 8 0 futexpl 56 14664 0 14664 2 1 1 1 0 8 1 knotepl 112 165 0 145 2 1 1 2 0 8 0 kqueuepl 144 131 0 127 1 0 1 1 0 8 0 pipepl 304 194 0 183 3 1 2 2 0 8 1 fdescpl 496 1095 0 1079 3 0 3 3 0 8 0 filepl 152 6602 0 6499 6 1 5 6 0 8 1 lockfpl 104 185 0 183 1 0 1 1 0 8 0 lockfspl 48 64 0 62 1 0 1 1 0 8 0 sessionpl 112 19 0 8 1 0 1 1 0 8 0 pgrppl 48 33 0 22 1 0 1 1 0 8 0 ucredpl 96 500 0 490 1 0 1 1 0 8 0 zombiepl 144 1079 0 1079 1 0 1 1 0 8 1 processpl 992 1131 0 1079 7 0 7 7 0 8 0 procpl 624 2943 0 2883 5 0 5 5 0 8 0 sosppl 128 8 0 8 2 2 0 1 0 8 0 sockpl 400 1447 0 1425 6 3 3 4 0 8 0 mcl64k 65536 8 0 0 1 0 1 1 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 15 0 0 2 0 2 2 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 7 0 0 1 0 1 1 0 8 0 mcl4k 4096 11 0 0 2 0 2 2 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 183 0 0 22 0 22 22 0 8 0 mtagpl 96 27 0 0 1 0 1 1 0 8 0 mbufpl 256 218 0 0 13 0 13 13 0 8 0 bufpl 280 4899 0 126 341 0 341 341 0 8 0 anonpl 16 117685 0 99359 87 9 78 85 0 124 0 amapchunkpl 152 7302 0 6990 34 20 14 27 0 158 0 amappl16 192 4454 0 3575 49 3 46 46 0 8 2 amappl15 184 91 0 89 1 0 1 1 0 8 0 amappl14 176 221 0 216 1 0 1 1 0 8 0 amappl13 168 35 0 32 1 0 1 1 0 8 0 amappl12 160 20 0 17 1 0 1 1 0 8 0 amappl11 152 270 0 255 1 0 1 1 0 8 0 amappl10 144 106 0 101 1 0 1 1 0 8 0 amappl9 136 912 0 909 1 0 1 1 0 8 0 amappl8 128 427 0 356 3 0 3 3 0 8 0 amappl7 120 121 0 110 1 0 1 1 0 8 0 amappl6 112 253 0 241 1 0 1 1 0 8 0 amappl5 104 787 0 770 1 0 1 1 0 8 0 amappl4 96 719 0 688 1 0 1 1 0 8 0 amappl3 88 170 0 161 1 0 1 1 0 8 0 amappl2 80 7921 0 7850 2 0 2 2 0 8 0 amappl1 72 41726 0 41284 24 14 10 18 0 8 0 amappl 80 3247 0 3159 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 54 0 13 1 0 1 1 0 8 0 uaddrrnd 24 1101 0 1083 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1101 0 1083 1 0 1 1 0 8 0 vmmpekpl 168 12177 0 12138 2 0 2 2 0 8 0 vmmpepl 168 145644 0 143507 152 56 96 131 0 357 1 vmsppl 368 1100 0 1083 2 0 2 2 0 8 0 pdppl 4096 2209 0 2168 6 0 6 6 0 8 0 pvpl 32 361928 0 340293 205 22 183 200 0 265 1 pmappl 232 1100 0 1083 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 272 0 15 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(ffffffff82713ff0) 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(ffffffff828ec9f0) at __mp_lock+0x12e __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828ec9f0) at __mp_lock+0x12e sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff828ec9f0,2) 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(ffff800020e18270,1) at sleep_finish+0x113 sys/kern/kern_synch.c:418 sleep_finish_all(ffff800020e18270,1) at sleep_finish_all+0x32 sleep_finish_timeout sys/kern/kern_synch.c:447 [inline] sleep_finish_all(ffff800020e18270,1) at sleep_finish_all+0x32 sys/kern/kern_synch.c:393 tsleep(ffffffff828ead60,118,ffffffff8246bced,41ca95) at tsleep+0x1cc sys/kern/kern_synch.c:155 doppoll(ffff800020ddd118,7f7ffffc49d0,3,ffff800020e18408,0,ffff800020e184c0) at doppoll+0x57e sys/kern/sys_generic.c:968 sys_poll(ffff800020ddd118,ffff800020e18470,ffff800020e184c0) at sys_poll+0xa6 syscall(ffff800020e18540) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e18540) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc49b0, count: -13 ddb{0}> machine ddbcpu 1 Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> trace in_delmulti(3fff7edefff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b1b700) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac4000) at in_ifdetach+0x74 sys/netinet/in.c:971 ifioctl(fffffd806f662960,801169ac,ffff800021f1baf0,ffff800020e034f8) at ifioctl+0x1473 sys/net/if.c:1873 soo_ioctl(fffffd8067df2c90,801169ac,ffff800021f1baf0,ffff800020e034f8) at soo_ioctl+0x27c sys/kern/sys_socket.c:138 sys_ioctl(ffff800020e034f8,ffff800021f1bc08,ffff800021f1bc50) at sys_ioctl+0x4a5 syscall(ffff800021f1bcd0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021f1bcd0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x594cec668c0, count: -8