uvm_fault(0xfffffd807effe170, 0xb, 0, 1) -> e kernel: 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(0xfffffd807effe170, 0xb, 0, 1) -> e in_delmulti(ffffffffffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff8000230f5270, count: 0 ddb{1}> trace in_delmulti(ffffffffffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b1cb00) 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 ifioctl(fffffd80645b54e0,80206979,ffff8000230f54b0,ffff800020ec93e0) at ifioctl+0x3ea sys/net/if.c:1828 soo_ioctl(fffffd806801ac98,80206979,ffff8000230f54b0,ffff800020ec93e0) at soo_ioctl+0x27c sys/kern/sys_socket.c:138 sys_ioctl(ffff800020ec93e0,ffff8000230f55c8,ffff8000230f5610) at sys_ioctl+0x4a5 syscall(ffff8000230f5690) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000230f5690) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe9533e78c0, count: -10 ddb{1}> show registers rdi 0xffff800020ed0000 rsi 0x20bda acpi_pdirpa+0xca42 rbp 0xffff8000230f5220 rbx 0 rdx 0xffff800020ed0000 rcx 0x20bd9 acpi_pdirpa+0xca41 rax 0xffffffff8120951d in_delmulti+0x8d r8 0xffff800000b1cb00 r9 0xffffffff8158de33 rt_ifa_purge+0x153 r10 0x5 r11 0xec3602f83929f626 r12 0 r13 0x3 r14 0xffffffffffffffff r15 0x1 rip 0xffffffff8120951d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000230f51c0 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> show proc PROC (syz-executor.0) pid=127794 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=78, nice=20 forw=0xffffffffffffffff, list=0xffff800020ec98d0,0xffff800020ec8798 process=0xffff8000230d07f0 user=0xffff8000230f0000, vmspace=0xfffffd807effe170 estcpu=28, cpticks=2, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 61790 69888 22870 0 2 0 syz-executor.1 61790 287485 22870 0 3 0x4000080 netio syz-executor.1 76160 422038 7020 0 3 0x80 nanosleep syz-executor.0 *76160 127794 7020 0 7 0x4000000 syz-executor.0 22870 433738 20624 0 2 0x2 syz-executor.1 38054 363536 0 0 3 0x14200 acct acct 38025 414584 0 0 3 0x14200 bored sosplice 7020 241067 20624 0 7 0x2 syz-executor.0 20624 252391 13124 0 3 0x82 thrsleep syz-fuzzer 20624 344575 13124 0 3 0x4000082 thrsleep syz-fuzzer 20624 342472 13124 0 3 0x4000082 thrsleep syz-fuzzer 20624 495940 13124 0 3 0x4000082 thrsleep syz-fuzzer 20624 64556 13124 0 3 0x4000082 thrsleep syz-fuzzer 20624 499612 13124 0 3 0x4000082 thrsleep syz-fuzzer 20624 421524 13124 0 3 0x4000082 kqread syz-fuzzer 20624 351491 13124 0 3 0x4000082 thrsleep syz-fuzzer 13124 248405 33318 0 3 0x10008a pause ksh 33318 249570 2778 0 3 0x92 select sshd 87685 440398 1 0 3 0x100083 ttyin getty 2778 200755 1 0 3 0x80 select sshd 93795 398674 33148 74 3 0x100092 bpf pflogd 33148 264507 1 0 3 0x80 netio pflogd 33845 330769 41761 73 3 0x100090 kqread syslogd 41761 183432 1 0 3 0x100082 netio syslogd 25928 497133 1 77 3 0x100090 poll dhclient 51459 378721 1 0 3 0x80 poll dhclient 16110 98829 0 0 3 0x14200 bored smr 24812 233593 0 0 3 0x14200 pgzero zerothread 31033 278088 0 0 3 0x14200 aiodoned aiodoned 95258 450583 0 0 3 0x14200 syncer update 32031 94858 0 0 3 0x14200 cleaner cleaner 49412 243569 0 0 3 0x14200 reaper reaper 38207 25896 0 0 3 0x14200 pgdaemon pagedaemon 75118 374624 0 0 3 0x14200 bored crynlk 56670 382258 0 0 3 0x14200 bored crypto 34370 67188 0 0 3 0x40014200 acpi0 acpi0 84288 42091 0 0 3 0x40014200 idle1 61191 423160 0 0 3 0x14200 bored softnet 19746 410557 0 0 3 0x14200 bored systqmp 63657 192589 0 0 3 0x14200 bored systq 29256 25657 0 0 3 0x40014200 bored softclock 37076 468018 0 0 3 0x40014200 idle0 1 319651 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 76160 (syz-executor.0) thread 0xffff800020ec93e0 (127794) exclusive rwlock netlock r = 0 (0xffffffff82780fa0) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 if_detach+0x70 sys/net/if.c:1017 #2 tun_clone_destroy+0x1e1 sys/net/if_tun.c:326 #3 ifioctl+0x3ea sys/net/if.c:1828 #4 soo_ioctl+0x27c sys/kern/sys_socket.c:138 #5 sys_ioctl+0x4a5 #6 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #6 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #7 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff8293cf68) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 __mp_acquire_count+0x51 sys/kern/kern_lock.c:227 #2 mi_switch+0x392 sys/kern/sched_bsd.c:435 #3 sleep_finish+0x113 sys/kern/kern_synch.c:418 #4 cond_wait+0x76 sys/kern/kern_synch.c:907 #5 smr_barrier_impl+0xf9 sys/kern/kern_smr.c:271 #6 tun_clone_destroy+0x136 sys/net/if_tun.c:311 #7 ifioctl+0x3ea sys/net/if.c:1828 #8 soo_ioctl+0x27c sys/kern/sys_socket.c:138 #9 sys_ioctl+0x4a5 #10 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #10 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #11 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9510 6413K 6679K 78643K 10960 0 pcb 13 8K 8K 78643K 60 0 rtable 129 9K 10K 78643K 451 0 ifaddr 75 15K 16K 78643K 156 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 63 0 ioctlops 0 0K 4K 78643K 1569 0 iov 0 0K 32K 78643K 34 0 mount 1 1K 1K 78643K 1 0 vnodes 1219 77K 77K 78643K 1373 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 6 0 VM map 2 1K 1K 78643K 2 0 sem 12 1K 1K 78643K 75 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 6 17K 25K 78643K 449 0 sigio 0 0K 0K 78643K 6 0 proc 62 63K 83K 78643K 519 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 32 0 in_multi 61 3K 3K 78643K 134 0 ether_multi 1 0K 0K 78643K 9 0 mrt 0 0K 0K 78643K 6 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 49 228K 228K 78643K 49 0 exec 0 0K 1K 78643K 248 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 77K 78K 78643K 2451 0 UVM aobj 10 2K 2K 78643K 14 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 30 0 NDP 11 0K 0K 78643K 35 0 temp 108 3867K 3931K 78643K 6859 0 kqueue 3 4K 8K 78643K 10 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 10 0 3 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 88 33 0 31 1 0 1 1 0 8 0 rtentry 112 82 0 39 2 0 2 2 0 8 0 unpcb 120 176 0 166 1 0 1 1 0 8 0 syncache 272 6 0 6 2 2 0 1 0 8 0 tcpqe 32 178 0 178 1 1 0 1 0 8 0 tcpcb 592 141 0 136 4 2 2 2 0 8 1 inpcb 296 801 0 790 4 2 2 2 0 8 1 rttmr 72 3 0 3 2 1 1 1 0 8 1 nd6 48 20 0 16 1 0 1 1 0 8 0 pkpcb 40 4 0 4 1 1 0 1 0 8 0 ppxss 1136 5 0 5 3 2 1 1 0 8 1 pffrag 232 4 0 3 2 1 1 1 0 482 0 pffrnode 88 4 0 3 2 1 1 1 0 8 0 pffrent 40 94 0 93 2 1 1 1 0 8 0 pfosfp 40 847 0 423 5 0 5 5 0 8 0 pfosfpen 112 1430 0 714 21 0 21 21 0 8 0 pfrktable 1344 36 0 26 2 0 2 2 0 8 1 pfstitem 24 46 0 24 1 0 1 1 0 8 0 pfstkey 112 46 0 24 2 0 2 2 0 8 0 pfstate 328 46 0 24 4 0 4 4 0 8 0 pfrule 1360 34 0 24 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 283 0 102 13 0 13 13 0 8 0 art_table 32 284 0 102 2 0 2 2 0 8 0 art_node 16 81 0 42 1 0 1 1 0 8 0 sysvmsgpl 40 21 0 10 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 67 0 57 1 0 1 1 0 8 0 shmpl 112 11 0 4 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2035 0 632 89 0 89 89 0 8 0 ffsino 272 2035 0 632 96 2 94 95 0 8 0 nchpl 144 2903 0 1305 60 0 60 60 0 8 0 uvmvnodes 72 2181 0 0 40 0 40 40 0 8 0 vnodes 208 2181 0 0 115 0 115 115 0 8 0 namei 1024 8437 0 8437 4 3 1 1 0 8 1 percpumem 16 42 0 10 1 0 1 1 0 8 0 vcpupl 1984 5 0 0 1 0 1 1 0 8 0 vmpool 560 9 0 4 1 0 1 1 0 8 0 pfiaddrpl 120 19 0 10 1 0 1 1 0 8 0 scxspl 200 8525 0 8525 8 7 1 7 0 8 1 plimitpl 152 33 0 25 1 0 1 1 0 8 0 sigapl 424 663 0 629 4 0 4 4 0 8 0 futexpl 56 5715 0 5715 3 2 1 1 0 8 1 knotepl 112 83 0 63 1 0 1 1 0 8 0 kqueuepl 152 53 0 49 1 0 1 1 0 8 0 pipepl 304 136 0 125 2 0 2 2 0 8 0 fdescpl 496 646 0 629 3 0 3 3 0 8 0 filepl 152 3658 0 3552 6 1 5 5 0 8 0 lockfpl 104 104 0 103 1 0 1 1 0 8 0 lockfspl 48 37 0 36 1 0 1 1 0 8 0 sessionpl 120 19 0 8 1 0 1 1 0 8 0 pgrppl 48 23 0 12 1 0 1 1 0 8 0 ucredpl 96 289 0 280 1 0 1 1 0 8 0 zombiepl 144 629 0 629 2 1 1 1 0 8 1 processpl 1008 663 0 629 6 1 5 5 0 8 0 procpl 632 1569 0 1526 7 2 5 5 0 8 1 srpgc 72 2 0 2 1 0 1 1 0 8 1 sosppl 144 13 0 13 4 3 1 1 0 8 1 sockpl 400 1017 0 994 8 4 4 4 0 8 1 mcl64k 65536 10 0 0 2 0 2 2 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 8 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 7 0 0 1 0 1 1 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 196 0 0 24 0 24 24 0 8 0 mtagpl 96 20 0 0 1 0 1 1 0 8 0 mbufpl 256 268 0 0 15 0 15 15 0 8 0 bufpl 280 4105 0 127 285 0 285 285 0 8 0 anonpl 16 82769 0 64243 97 15 82 90 0 124 6 amapchunkpl 152 3641 0 3328 18 0 18 18 0 158 5 amappl16 192 3002 0 2146 55 12 43 55 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 114 0 109 1 0 1 1 0 8 0 amappl13 168 132 0 128 1 0 1 1 0 8 0 amappl12 160 23 0 20 1 0 1 1 0 8 0 amappl11 152 55 0 40 1 0 1 1 0 8 0 amappl10 144 23 0 19 1 0 1 1 0 8 0 amappl9 136 552 0 548 1 0 1 1 0 8 0 amappl8 128 428 0 361 3 0 3 3 0 8 0 amappl7 120 122 0 109 1 0 1 1 0 8 0 amappl6 112 39 0 28 1 0 1 1 0 8 0 amappl5 104 579 0 562 1 0 1 1 0 8 0 amappl4 96 595 0 565 1 0 1 1 0 8 0 amappl3 88 250 0 240 1 0 1 1 0 8 0 amappl2 80 4164 0 4085 2 0 2 2 0 8 0 amappl1 72 28182 0 27726 23 13 10 18 0 8 0 amappl 80 1876 0 1787 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 13 0 4 1 0 1 1 0 8 0 uaddrrnd 24 655 0 633 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 655 0 633 1 0 1 1 0 8 0 vmmpekpl 168 9029 0 8997 2 0 2 2 0 8 0 vmmpepl 168 90190 0 87966 138 37 101 128 0 357 3 vmsppl 368 654 0 633 2 0 2 2 0 8 0 pdppl 4096 1317 0 1271 7 1 6 6 0 8 0 pvpl 32 253539 0 232019 212 20 192 209 0 265 17 pmappl 232 654 0 633 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 273 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(ffffffff82738ff0) 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(ffffffff8293cd60) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff8293cd60) at __mp_lock+0x127 sys/kern/kern_lock.c:147 sleep_setup(ffff800020ecfc70,ffffffff82867f84,120,ffffffff823fea21) at sleep_setup+0xcf sys/kern/kern_synch.c:373 tsleep(ffffffff82867f84,120,ffffffff823fea21,2) at tsleep+0xe6 sleep_setup_timeout sys/kern/kern_synch.c:435 [inline] tsleep(ffffffff82867f84,120,ffffffff823fea21,2) at tsleep+0xe6 sys/kern/kern_synch.c:151 sys_nanosleep(ffff800020dd64f8,ffff800020ecfda0,ffff800020ecfdf0) at sys_nanosleep+0x205 sys/kern/kern_time.c:297 syscall(ffff800020ecfe70) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020ecfe70) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffeb960, count: -9 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(ffff800000b1cb00) 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 ifioctl(fffffd80645b54e0,80206979,ffff8000230f54b0,ffff800020ec93e0) at ifioctl+0x3ea sys/net/if.c:1828 soo_ioctl(fffffd806801ac98,80206979,ffff8000230f54b0,ffff800020ec93e0) at soo_ioctl+0x27c sys/kern/sys_socket.c:138 sys_ioctl(ffff800020ec93e0,ffff8000230f55c8,ffff8000230f5610) at sys_ioctl+0x4a5 syscall(ffff8000230f5690) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000230f5690) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe9533e78c0, count: -10