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(0xfffffd8063fffb90, 0x12, 0, 1) -> e in_delmulti(6) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff80002272fef0, count: 0 ddb{1}> trace in_delmulti(6) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b2b700) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac4000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac4000) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000ac4000) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:326 ifioctl(fffffd8070069500,80206979,ffff800022730130,ffff800020eae600) at ifioctl+0x3ea sys/net/if.c:1828 soo_ioctl(fffffd8067664dc8,80206979,ffff800022730130,ffff800020eae600) at soo_ioctl+0x27c sys/kern/sys_socket.c:138 sys_ioctl(ffff800020eae600,ffff800022730248,ffff800022730290) at sys_ioctl+0x4a5 syscall(ffff800022730310) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022730310) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x66a24534ce0, count: -10 ddb{1}> show registers rdi 0xffff800020efd000 rsi 0x79a8 __ALIGN_SIZE+0x69a8 rbp 0xffff80002272fea0 rbx 0 rdx 0xffff800020efd000 rcx 0x79a7 __ALIGN_SIZE+0x69a7 rax 0xffffffff819aa3cd in_delmulti+0x8d r8 0xffff800000b2b700 r9 0xffffffff81968e83 rt_ifa_purge+0x153 r10 0x5 r11 0x1424f5d70a2b8e5f r12 0 r13 0x3 r14 0x6 r15 0x1 rip 0xffffffff819aa3cd in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002272fe40 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> show proc PROC (syz-executor.0) pid=380509 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020eaed50,0xffff800020ead500 process=0xffff800020df0f90 user=0xffff80002272b000, vmspace=0xfffffd8063fffb90 estcpu=6, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 3646 460926 89256 0 3 0x80 nanosleep syz-executor.0 * 3646 380509 89256 0 7 0x4000000 syz-executor.0 3646 517085 89256 0 3 0x4000080 fsleep syz-executor.0 56455 257007 0 0 3 0x14200 acct acct 27260 208672 0 0 3 0x14200 bored sosplice 52220 415349 0 0 3 0x14280 nfsidl nfsio 1605 219531 0 0 3 0x14280 nfsidl nfsio 90957 66165 0 0 3 0x14280 nfsidl nfsio 62384 255531 0 0 3 0x14280 nfsidl nfsio 69242 233640 0 0 3 0x14280 nfsidl nfsio 89523 81610 0 0 3 0x14280 nfsidl nfsio 58439 173778 0 0 3 0x14280 nfsidl nfsio 19322 438006 0 0 3 0x14280 nfsidl nfsio 40697 71317 0 0 3 0x14280 nfsidl nfsio 54290 150124 0 0 3 0x14280 nfsidl nfsio 40811 133890 0 0 3 0x14280 nfsidl nfsio 30780 401780 0 0 3 0x14280 nfsidl nfsio 776 481295 0 0 3 0x14280 nfsidl nfsio 62058 436334 0 0 3 0x14280 nfsidl nfsio 86975 87596 0 0 3 0x14280 nfsidl nfsio 3015 350453 0 0 3 0x14280 nfsidl nfsio 40479 352338 0 0 3 0x14280 nfsidl nfsio 8463 370866 0 0 3 0x14280 nfsidl nfsio 44026 161220 0 0 3 0x14280 nfsidl nfsio 13995 385271 0 0 3 0x14280 nfsidl nfsio 89256 496524 75828 0 3 0x82 nanosleep syz-executor.0 78683 41922 75828 0 3 0x82 nanosleep syz-executor.1 75828 182529 55699 0 3 0x82 thrsleep syz-fuzzer 75828 85671 55699 0 3 0x4000082 thrsleep syz-fuzzer 75828 402163 55699 0 3 0x4000082 thrsleep syz-fuzzer 75828 141808 55699 0 3 0x4000082 kqread syz-fuzzer 75828 31435 55699 0 3 0x4000082 thrsleep syz-fuzzer 75828 324623 55699 0 3 0x4000082 thrsleep syz-fuzzer 75828 3716 55699 0 3 0x4000082 thrsleep syz-fuzzer 75828 433648 55699 0 3 0x4000082 thrsleep syz-fuzzer 55699 460343 65596 0 3 0x10008a pause ksh 65596 194721 45393 0 3 0x92 select sshd 85214 376477 1 0 3 0x100083 ttyin getty 45393 487282 1 0 3 0x80 select sshd 81711 318476 9542 74 3 0x100092 bpf pflogd 9542 146245 1 0 3 0x80 netio pflogd 36891 425476 60501 73 3 0x100090 kqread syslogd 60501 118230 1 0 3 0x100082 netio syslogd 32541 302678 1 77 3 0x100090 poll dhclient 94356 510581 1 0 3 0x80 poll dhclient 17693 451405 0 0 3 0x14200 bored smr 48339 80063 0 0 3 0x14200 pgzero zerothread 44627 298262 0 0 3 0x14200 aiodoned aiodoned 89661 83542 0 0 3 0x14200 syncer update 76427 340113 0 0 3 0x14200 cleaner cleaner 82295 118659 0 0 3 0x14200 reaper reaper 87711 523011 0 0 3 0x14200 pgdaemon pagedaemon 63040 357690 0 0 3 0x14200 bored crynlk 80128 240558 0 0 3 0x14200 bored crypto 67678 462752 0 0 3 0x40014200 acpi0 acpi0 62718 143634 0 0 3 0x40014200 idle1 32233 238703 0 0 3 0x14200 bored softnet 54357 293092 0 0 3 0x14200 bored systqmp 24855 100233 0 0 3 0x14200 bored systq 63450 245352 0 0 3 0x40014200 bored softclock 76290 109228 0 0 7 0x40014200 idle0 1 229250 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 3646 (syz-executor.0) thread 0xffff800020eae600 (380509) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9540 6425K 6794K 78643K 11464 0 pcb 14 8K 8K 78643K 84 0 rtable 107 10K 11K 78643K 623 0 ifaddr 98 18K 19K 78643K 238 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 75 0 ioctlops 0 0K 4K 78643K 1645 0 iov 0 0K 16K 78643K 72 0 mount 1 1K 1K 78643K 1 0 vnodes 1227 77K 77K 78643K 1588 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 15 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 314 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 804 0 sigio 0 0K 0K 78643K 9 0 proc 61 63K 83K 78643K 486 0 subproc 32 2K 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 61 0 in_multi 60 3K 3K 78643K 119 0 ether_multi 1 0K 0K 78643K 9 0 mrt 1 0K 0K 78643K 1 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 275 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 191 92K 108K 78643K 3697 0 UVM aobj 35 6K 6K 78643K 45 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 62 0 NDP 16 0K 0K 78643K 39 0 temp 145 3878K 3942K 78643K 11785 0 kqueue 3 4K 16K 78643K 22 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 11 0 5 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 46 0 44 1 0 1 1 0 8 0 rtentry 112 78 0 50 2 0 2 2 0 8 0 unpcb 120 355 0 344 1 0 1 1 0 8 0 syncache 264 5 0 5 2 2 0 1 0 8 0 tcpqe 32 539 0 539 1 1 0 1 0 8 0 tcpcb 544 199 0 189 2 1 1 2 0 8 0 inpcb 296 707 0 697 11 9 2 2 0 8 1 nd6 48 18 0 13 1 0 1 1 0 8 0 ppxss 1136 3 0 3 2 2 0 1 0 8 0 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 4 0 4 2 2 0 1 0 482 0 pffrnode 88 4 0 4 2 2 0 1 0 8 0 pffrent 40 52 0 52 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 88 0 76 7 5 2 2 0 8 1 pfstitem 24 28 0 26 1 0 1 1 0 8 0 pfstkey 112 30 0 28 1 0 1 1 0 8 0 pfstate 328 29 0 27 2 1 1 2 0 8 0 pfrule 1360 60 0 42 4 2 2 2 0 8 0 art_heap8 4096 2 0 1 2 0 2 2 0 8 1 art_heap4 256 329 0 196 15 5 10 13 0 8 0 art_table 32 331 0 197 2 0 2 2 0 8 0 art_node 16 68 0 46 1 0 1 1 0 8 0 sysvmsgpl 40 59 0 41 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 304 0 294 1 0 1 1 0 8 0 shmpl 112 42 0 10 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2493 0 1092 89 0 89 89 0 8 0 ffsino 272 2493 0 1092 94 0 94 94 0 8 0 nchpl 144 4163 0 2556 60 0 60 60 0 8 0 uvmvnodes 72 2743 0 0 50 0 50 50 0 8 0 vnodes 208 2743 0 0 145 0 145 145 0 8 0 namei 1024 12906 0 12906 8 7 1 1 0 8 1 percpumem 16 48 0 16 1 0 1 1 0 8 0 vcpupl 1984 7 0 0 1 0 1 1 0 8 0 vmpool 560 7 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 39 0 29 3 2 1 1 0 8 0 scsiplug 64 1 0 1 1 1 0 1 0 8 0 scxspl 192 10900 0 10900 9 8 1 7 0 8 1 plimitpl 152 57 0 49 1 0 1 1 0 8 0 sigapl 424 1042 0 989 8 1 7 7 0 8 0 futexpl 56 11931 0 11930 8 7 1 1 0 8 0 knotepl 112 82 0 62 1 0 1 1 0 8 0 kqueuepl 144 101 0 98 1 0 1 1 0 8 0 pipepl 304 197 0 186 12 11 1 2 0 8 0 fdescpl 496 1004 0 988 3 0 3 3 0 8 0 filepl 152 7216 0 7110 6 1 5 6 0 8 0 lockfpl 104 136 0 135 1 0 1 1 0 8 0 lockfspl 48 50 0 49 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 23 0 12 1 0 1 1 0 8 0 ucredpl 96 2235 0 2225 1 0 1 1 0 8 0 zombiepl 144 989 0 988 1 0 1 1 0 8 0 processpl 992 1042 0 988 8 1 7 7 0 8 0 procpl 624 2845 0 2782 14 8 6 6 0 8 0 srpgc 64 2 0 2 1 1 0 1 0 8 0 sosppl 128 22 0 22 7 7 0 1 0 8 0 sockpl 400 1114 0 1091 11 8 3 4 0 8 0 mcl64k 65536 7 0 0 1 0 1 1 0 8 0 mcl16k 16384 5 0 0 1 0 1 1 0 8 0 mcl12k 12288 11 0 0 2 0 2 2 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 13 0 0 2 0 2 2 0 8 0 mcl4k 4096 21 0 0 3 1 2 3 0 8 0 mcl2k2 2112 6 0 0 1 0 1 1 0 8 0 mcl2k 2048 241 0 0 25 2 23 25 0 8 2 mtagpl 96 34 0 0 1 0 1 1 0 8 0 mbufpl 256 478 0 0 24 0 24 24 0 8 0 bufpl 280 4585 0 128 319 0 319 319 0 8 0 anonpl 16 117595 0 98942 111 34 77 91 0 124 0 amapchunkpl 152 6810 0 6467 42 27 15 28 0 158 0 amappl16 192 4456 0 3616 58 15 43 55 0 8 0 amappl15 184 773 0 769 1 0 1 1 0 8 0 amappl14 176 6 0 4 1 0 1 1 0 8 0 amappl13 168 28 0 25 1 0 1 1 0 8 0 amappl12 160 21 0 19 1 0 1 1 0 8 0 amappl11 152 54 0 39 1 0 1 1 0 8 0 amappl10 144 17 0 13 1 0 1 1 0 8 0 amappl9 136 363 0 360 1 0 1 1 0 8 0 amappl8 128 373 0 327 2 0 2 2 0 8 0 amappl7 120 118 0 104 1 0 1 1 0 8 0 amappl6 112 34 0 27 1 0 1 1 0 8 0 amappl5 104 919 0 903 1 0 1 1 0 8 0 amappl4 96 495 0 465 1 0 1 1 0 8 0 amappl3 88 150 0 140 1 0 1 1 0 8 0 amappl2 80 7922 0 7852 2 0 2 2 0 8 0 amappl1 72 39632 0 39177 24 14 10 18 0 8 0 amappl 80 3139 0 3046 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 44 0 10 1 0 1 1 0 8 0 uaddrrnd 24 1011 0 988 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1011 0 988 1 0 1 1 0 8 0 vmmpekpl 168 12250 0 12209 4 2 2 3 0 8 0 vmmpepl 168 136283 0 134199 148 51 97 109 0 357 1 vmsppl 368 1010 0 988 3 0 3 3 0 8 0 pdppl 4096 2029 0 1983 9 2 7 7 0 8 0 pvpl 32 345761 0 323775 272 90 182 216 0 265 3 pmappl 232 1010 0 988 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 312 0 38 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+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828ec9f0) at __mp_lock+0x127 sys/kern/kern_lock.c:147 intr_handler(ffff800020d91110,ffff80000065bd80) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge4_untramp() at Xintr_ioapic_edge4_untramp+0x19f acpicpu_idle() at acpicpu_idle+0x331 sys/dev/acpi/acpicpu.c:1187 sched_idle(ffffffff82713ff0) at sched_idle+0x3f7 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: -8 ddb{0}> machine ddbcpu 1 Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> trace in_delmulti(6) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b2b700) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac4000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac4000) at if_detach+0x140 sys/net/if.c:1039 tun_clone_destroy(ffff800000ac4000) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:326 ifioctl(fffffd8070069500,80206979,ffff800022730130,ffff800020eae600) at ifioctl+0x3ea sys/net/if.c:1828 soo_ioctl(fffffd8067664dc8,80206979,ffff800022730130,ffff800020eae600) at soo_ioctl+0x27c sys/kern/sys_socket.c:138 sys_ioctl(ffff800020eae600,ffff800022730248,ffff800022730290) at sys_ioctl+0x4a5 syscall(ffff800022730310) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022730310) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x66a24534ce0, count: -10