uvm_fault(0xfffffd80640dea28, 0x0, 0, 1) -> e kernel: page fault trap, code=0 Stopped at ifa_update_broadaddr+0x1f: movzbl 0(%r15),%r12d ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic kernel page fault uvm_fault(0xfffffd80640dea28, 0x0, 0, 1) -> e ifa_update_broadaddr(ffff800000ac4000,ffff800000af6b00,ffff800021f7fd50) at ifa_update_broadaddr+0x1f sys/net/if.c:2968 end trace frame: 0xffff800021f7fc00, count: 0 ddb{0}> trace ifa_update_broadaddr(ffff800000ac4000,ffff800000af6b00,ffff800021f7fd50) at ifa_update_broadaddr+0x1f sys/net/if.c:2968 in_ioctl(80206913,ffff800021f7fd40,ffff800000ac4000,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd806581f668,80206913,ffff800021f7fd40,ffff8000230f0778) at ifioctl+0xe70 sys/net/if.c:2180 soo_ioctl(fffffd806805adc8,80206913,ffff800021f7fd40,ffff8000230f0778) at soo_ioctl+0x27c sys/kern/sys_socket.c:138 sys_ioctl(ffff8000230f0778,ffff800021f7fe58,ffff800021f7fea0) at sys_ioctl+0x4a5 syscall(ffff800021f7ff20) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021f7ff20) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xdb47c9b11e0, count: -7 ddb{0}> show registers rdi 0xffffffff8170c9db ifa_update_broadaddr+0x1b rsi 0xdc rbp 0xffff800021f7fb60 rbx 0x10 rdx 0xdd rcx 0xffff800020ed7000 rax 0xffff800020ed7000 r8 0xffffffff81c4c787 in_ioctl+0x387 r9 0x7 r10 0x3 r11 0xa9d6871ffb717c0b r12 0xffff800021f7fd50 r13 0 r14 0xffff800021f7fd50 r15 0 rip 0xffffffff8170c9df ifa_update_broadaddr+0x1f cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800021f7fb20 ss 0x10 ifa_update_broadaddr+0x1f: movzbl 0(%r15),%r12d ddb{0}> show proc PROC (syz-executor.0) pid=503621 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=69, nice=20 forw=0xffffffffffffffff, list=0xffff8000230f0028,0xffffffff82937810 process=0xffff800020e28bd8 user=0xffff800021f7a000, vmspace=0xfffffd80640dea28 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 50141 398239 37356 0 2 0 syz-executor.0 *50141 503621 37356 0 7 0x4000000 syz-executor.0 64278 359649 0 0 3 0x14200 acct acct 81044 321798 0 0 3 0x14280 nfsidl nfsio 49504 345759 0 0 3 0x14280 nfsidl nfsio 97831 33736 0 0 3 0x14280 nfsidl nfsio 32273 417723 0 0 3 0x14280 nfsidl nfsio 86221 152513 0 0 3 0x14280 nfsidl nfsio 45232 386289 0 0 3 0x14280 nfsidl nfsio 8541 436784 0 0 3 0x14280 nfsidl nfsio 2165 461382 0 0 3 0x14280 nfsidl nfsio 69667 283172 0 0 3 0x14280 nfsidl nfsio 80011 451888 0 0 3 0x14280 nfsidl nfsio 93837 267357 0 0 3 0x14280 nfsidl nfsio 48118 85669 0 0 3 0x14280 nfsidl nfsio 45357 41825 0 0 3 0x14280 nfsidl nfsio 94824 407399 0 0 3 0x14280 nfsidl nfsio 22430 236408 0 0 3 0x14280 nfsidl nfsio 80573 59790 0 0 3 0x14280 nfsidl nfsio 17686 273907 0 0 3 0x14280 nfsidl nfsio 74307 372642 0 0 3 0x14280 nfsidl nfsio 43699 295370 0 0 3 0x14280 nfsidl nfsio 17178 260221 0 0 3 0x14280 nfsidl nfsio 74182 316309 0 0 3 0x14200 bored sosplice 90153 64240 10453 0 2 0x2 syz-executor.1 37356 439613 10453 0 2 0x482 syz-executor.0 10453 434514 98745 0 3 0x82 thrsleep syz-fuzzer 10453 186605 98745 0 7 0x4000482 syz-fuzzer 10453 210126 98745 0 3 0x4000082 thrsleep syz-fuzzer 10453 18965 98745 0 3 0x4000082 thrsleep syz-fuzzer 10453 5076 98745 0 3 0x4000082 kqread syz-fuzzer 10453 523863 98745 0 3 0x4000082 thrsleep syz-fuzzer 10453 359660 98745 0 3 0x4000082 thrsleep syz-fuzzer 10453 330598 98745 0 2 0x4000482 syz-fuzzer 10453 160514 98745 0 3 0x4000082 thrsleep syz-fuzzer 10453 362309 98745 0 3 0x4000082 thrsleep syz-fuzzer 98745 474633 14985 0 3 0x10008a pause ksh 14985 365840 48377 0 3 0x92 select sshd 56243 319446 1 0 3 0x100083 ttyin getty 48377 200534 1 0 3 0x80 select sshd 32606 509264 46075 74 3 0x100092 bpf pflogd 46075 367795 1 0 3 0x80 netio pflogd 1508 140997 72066 73 3 0x100090 kqread syslogd 72066 166430 1 0 3 0x100082 netio syslogd 1982 282144 1 77 3 0x100090 poll dhclient 44880 328965 1 0 3 0x80 poll dhclient 70311 228849 0 0 3 0x14200 bored smr 18960 386777 0 0 3 0x14200 pgzero zerothread 73951 503681 0 0 3 0x14200 aiodoned aiodoned 76419 262955 0 0 3 0x14200 syncer update 46731 1303 0 0 3 0x14200 cleaner cleaner 54697 521791 0 0 3 0x14200 reaper reaper 8783 299090 0 0 3 0x14200 pgdaemon pagedaemon 14251 101620 0 0 3 0x14200 bored crynlk 76893 41016 0 0 3 0x14200 bored crypto 53569 420239 0 0 3 0x40014200 acpi0 acpi0 37241 255320 0 0 3 0x40014200 idle1 40163 444955 0 0 3 0x14200 bored softnet 89398 401550 0 0 3 0x14200 bored systqmp 9689 3030 0 0 3 0x14200 bored systq 14514 89350 0 0 2 0x40014200 softclock 34582 93164 0 0 3 0x40014200 idle0 1 307963 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 50141 (syz-executor.0) thread 0xffff8000230f0778 (503621) exclusive rwlock netlock r = 0 (0xffffffff8273b8d8) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 in_ioctl+0x1f5 #2 ifioctl+0xe70 sys/net/if.c:2180 #3 soo_ioctl+0x27c sys/kern/sys_socket.c:138 #4 sys_ioctl+0x4a5 #5 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #5 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #6 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff828fd198) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 soo_ioctl+0x26a sys/kern/sys_socket.c:138 #2 sys_ioctl+0x4a5 #3 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #3 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #4 Xsyscall+0x128 Process 90153 (syz-executor.1) thread 0xffff800020e0ad58 (64240) exclusive rrwlock inode r = 0 (0xfffffd8065957f88) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 rw_enter+0x453 sys/kern/kern_rwlock.c:311 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462 #3 ufs_ihashins+0x45 sys/ufs/ufs/ufs_ihash.c:140 #4 ffs_vget+0x13e sys/ufs/ffs/ffs_vfsops.c:1358 #5 ffs_inode_alloc+0x1e2 sys/ufs/ffs/ffs_alloc.c:394 #6 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1162 #7 VOP_MKDIR+0xc6 sys/kern/vfs_vops.c:450 #8 domkdirat+0x121 sys/kern/vfs_syscalls.c:3051 #9 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #9 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #10 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8068cd7810) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 rw_enter+0x453 sys/kern/kern_rwlock.c:311 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:603 #4 vn_lock+0x81 sys/kern/vfs_vnops.c:575 #5 vfs_lookup+0xe6 sys/kern/vfs_lookup.c:419 #6 namei+0x63c sys/kern/vfs_lookup.c:249 #7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3036 #8 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9518 6414K 6929K 78643K 11252 0 pcb 13 8K 8K 78643K 83 0 rtable 93 4K 4K 78643K 350 0 ifaddr 78 15K 16K 78643K 143 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 67 0 ioctlops 0 0K 4K 78643K 1544 0 iov 0 0K 16K 78643K 139 0 mount 1 1K 1K 78643K 1 0 vnodes 1228 77K 77K 78643K 1524 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 0K 0K 78643K 95 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 506 0 sigio 0 0K 0K 78643K 9 0 proc 62 63K 95K 78643K 477 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 28 0 in_multi 52 2K 3K 78643K 92 0 ether_multi 1 0K 0K 78643K 9 0 mrt 0 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 61 281K 281K 78643K 61 0 exec 0 0K 1K 78643K 259 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 136 104K 104K 78643K 2637 0 UVM aobj 20 4K 4K 78643K 20 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 56 0 NDP 12 0K 0K 78643K 29 0 temp 119 3864K 3929K 78643K 9224 0 kqueue 3 4K 8K 78643K 12 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 7 0 1 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 25 0 23 1 0 1 1 0 8 0 rtentry 112 61 0 27 2 0 2 2 0 8 0 unpcb 120 352 0 342 1 0 1 1 0 8 0 syncache 264 9 0 9 3 3 0 1 0 8 0 tcpqe 32 84 0 84 2 2 0 1 0 8 0 tcpcb 544 393 0 388 2 1 1 2 0 8 0 inpcb 296 708 0 699 6 4 2 2 0 8 1 nd6 48 14 0 8 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 3 0 3 1 1 0 1 0 482 0 pffrnode 88 3 0 3 1 1 0 1 0 8 0 pffrent 40 94 0 94 2 1 1 1 0 8 1 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 3 0 1 1 0 1 1 0 8 0 pfstitem 24 34 0 26 1 0 1 1 0 8 0 pfstkey 112 36 0 28 1 0 1 1 0 8 0 pfstate 328 35 0 27 3 1 2 2 0 8 0 pfrule 1360 33 0 20 3 1 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 274 0 108 13 1 12 13 0 8 0 art_table 32 275 0 108 2 0 2 2 0 8 0 art_node 16 60 0 30 1 0 1 1 0 8 0 sysvmsgpl 40 13 0 3 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 90 0 80 1 0 1 1 0 8 0 shmpl 112 17 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2127 0 721 90 1 89 89 0 8 0 ffsino 272 2127 0 721 96 1 95 95 0 8 0 nchpl 144 3008 0 1398 60 0 60 60 0 8 0 uvmvnodes 72 2345 0 0 43 0 43 43 0 8 0 vnodes 208 2345 0 0 124 0 124 124 0 8 0 namei 1024 9452 0 9451 4 3 1 1 0 8 0 percpumem 16 44 0 12 1 0 1 1 0 8 0 vcpupl 1984 8 0 0 1 0 1 1 0 8 0 vmpool 560 9 0 1 1 0 1 1 0 8 0 pfiaddrpl 120 2 0 0 1 0 1 1 0 8 0 scxspl 192 8556 0 8556 8 7 1 7 0 8 1 plimitpl 152 45 0 37 1 0 1 1 0 8 0 sigapl 424 743 0 690 8 1 7 7 0 8 0 futexpl 56 6703 0 6703 3 2 1 1 0 8 1 knotepl 112 75 0 56 1 0 1 1 0 8 0 kqueuepl 144 63 0 60 1 0 1 1 0 8 0 pipepl 304 130 0 120 1 0 1 1 0 8 0 fdescpl 496 706 0 690 3 0 3 3 0 8 0 filepl 152 4843 0 4741 6 1 5 5 0 8 1 lockfpl 104 128 0 127 1 0 1 1 0 8 0 lockfspl 48 42 0 41 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 24 0 13 1 0 1 1 0 8 0 ucredpl 96 1428 0 1419 1 0 1 1 0 8 0 zombiepl 144 690 0 690 2 1 1 1 0 8 1 processpl 992 743 0 690 8 1 7 7 0 8 0 procpl 624 1856 0 1793 6 0 6 6 0 8 0 sosppl 128 13 0 13 3 2 1 1 0 8 1 sockpl 400 1089 0 1068 7 4 3 4 0 8 0 mcl64k 65536 7 0 0 1 0 1 1 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 9 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 10 0 0 2 0 2 2 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 264 0 0 32 0 32 32 0 8 0 mtagpl 96 42 0 0 2 0 2 2 0 8 0 mbufpl 256 378 0 0 19 0 19 19 0 8 0 bufpl 280 4097 0 132 284 0 284 284 0 8 0 anonpl 16 86183 0 68979 94 23 71 86 0 124 0 amapchunkpl 152 4599 0 4450 24 16 8 20 0 158 0 amappl16 192 3337 0 2402 70 22 48 59 0 8 1 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 23 0 19 1 0 1 1 0 8 0 amappl13 168 506 0 499 1 0 1 1 0 8 0 amappl12 160 242 0 240 3 2 1 1 0 8 0 amappl11 152 52 0 37 1 0 1 1 0 8 0 amappl10 144 24 0 19 1 0 1 1 0 8 0 amappl9 136 386 0 385 1 0 1 1 0 8 0 amappl8 128 362 0 324 2 0 2 2 0 8 0 amappl7 120 115 0 105 1 0 1 1 0 8 0 amappl6 112 25 0 20 1 0 1 1 0 8 0 amappl5 104 605 0 588 1 0 1 1 0 8 0 amappl4 96 731 0 700 1 0 1 1 0 8 0 amappl3 88 117 0 112 1 0 1 1 0 8 0 amappl2 80 4882 0 4812 2 0 2 2 0 8 0 amappl1 72 30280 0 29833 23 13 10 18 0 8 0 amappl 80 2100 0 2049 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 19 0 0 1 0 1 1 0 8 0 uaddrrnd 24 715 0 691 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 715 0 691 1 0 1 1 0 8 0 vmmpekpl 168 9083 0 9042 2 0 2 2 0 8 0 vmmpepl 168 97713 0 95589 150 50 100 119 0 357 4 vmsppl 368 714 0 691 4 1 3 3 0 8 0 pdppl 4096 1437 0 1390 9 2 7 7 0 8 1 pvpl 32 263260 0 242760 213 29 184 204 0 265 16 pmappl 232 714 0 691 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 296 0 17 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace ifa_update_broadaddr(ffff800000ac4000,ffff800000af6b00,ffff800021f7fd50) at ifa_update_broadaddr+0x1f sys/net/if.c:2968 in_ioctl(80206913,ffff800021f7fd40,ffff800000ac4000,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd806581f668,80206913,ffff800021f7fd40,ffff8000230f0778) at ifioctl+0xe70 sys/net/if.c:2180 soo_ioctl(fffffd806805adc8,80206913,ffff800021f7fd40,ffff8000230f0778) at soo_ioctl+0x27c sys/kern/sys_socket.c:138 sys_ioctl(ffff8000230f0778,ffff800021f7fe58,ffff800021f7fea0) at sys_ioctl+0x4a5 syscall(ffff800021f7ff20) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021f7ff20) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xdb47c9b11e0, count: -7 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020d70ff0) 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_pc() at __sanitizer_cov_trace_pc+0x2f kd_curproc sys/dev/kcov.c:411 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2f sys/dev/kcov.c:79 __mp_acquire_count(ffffffff828fcf90,1) 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(ffff800020e7c2f0,1) at sleep_finish+0x113 sys/kern/kern_synch.c:418 sleep_finish_all(ffff800020e7c2f0,1) at sleep_finish_all+0x32 sleep_finish_timeout sys/kern/kern_synch.c:447 [inline] sleep_finish_all(ffff800020e7c2f0,1) at sleep_finish_all+0x32 sys/kern/kern_synch.c:393 tsleep(ffffffff828bb1fc,120,ffffffff823fc23b,2) at tsleep+0x1cc sys/kern/kern_synch.c:155 sys_nanosleep(ffff800020e3f280,ffff800020e7c420,ffff800020e7c470) at sys_nanosleep+0x205 sys/kern/kern_time.c:297 syscall(ffff800020e7c4f0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e7c4f0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc000051f38, count: -12