uvm_fault(0xfffffd807effe450, 0x0, 0, 1) -> e kernel: page fault trap, code=0 Stopped at ifa_update_broadaddr+0x1f: movzbl 0(%r15),%r12d ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic kernel page fault uvm_fault(0xfffffd807effe450, 0x0, 0, 1) -> e ifa_update_broadaddr(ffff800000aef800,ffff800000aa0400,ffff8000230fc5c0) at ifa_update_broadaddr+0x1f sys/net/if.c:2968 end trace frame: 0xffff8000230fc470, count: 0 ddb{1}> trace ifa_update_broadaddr(ffff800000aef800,ffff800000aa0400,ffff8000230fc5c0) at ifa_update_broadaddr+0x1f sys/net/if.c:2968 in_ioctl(80206913,ffff8000230fc5b0,ffff800000aef800,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd80642bae48,80206913,ffff8000230fc5b0,ffff800020e04ae8) at ifioctl+0xe70 sys/net/if.c:2180 soo_ioctl(fffffd8066b3be60,80206913,ffff8000230fc5b0,ffff800020e04ae8) at soo_ioctl+0x27c sys/kern/sys_socket.c:138 sys_ioctl(ffff800020e04ae8,ffff8000230fc6c8,ffff8000230fc710) at sys_ioctl+0x4a5 syscall(ffff8000230fc790) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000230fc790) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x445f5a1f530, count: -7 ddb{1}> show registers rdi 0xffffffff812e503b ifa_update_broadaddr+0x1b rsi 0xd5 rbp 0xffff8000230fc3d0 rbx 0x10 rdx 0xd6 rcx 0xffff800021ed7000 rax 0xffff800021ed7000 r8 0xffffffff8204d947 in_ioctl+0x387 r9 0x7 r10 0x3 r11 0x3d955ef29d5a3671 r12 0xffff8000230fc5c0 r13 0 r14 0xffff8000230fc5c0 r15 0 rip 0xffffffff812e503f ifa_update_broadaddr+0x1f cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000230fc390 ss 0x10 ifa_update_broadaddr+0x1f: movzbl 0(%r15),%r12d ddb{1}> show proc PROC (syz-executor.1) pid=431687 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020e04608,0xffffffff8292eea0 process=0xffff800020e3c808 user=0xffff8000230f7000, vmspace=0xfffffd807effe450 estcpu=2, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 6402 93320 26701 0 7 0 syz-executor.1 * 6402 431687 26701 0 7 0x4000000 syz-executor.1 46197 241209 42264 0 2 0 syz-executor.0 65139 395604 0 0 3 0x14280 nfsidl nfsio 22909 285222 0 0 3 0x14280 nfsidl nfsio 49628 36279 0 0 3 0x14280 nfsidl nfsio 16821 311 0 0 3 0x14280 nfsidl nfsio 51964 407741 0 0 3 0x14280 nfsidl nfsio 52712 504405 0 0 3 0x14280 nfsidl nfsio 83469 132490 0 0 3 0x14280 nfsidl nfsio 61156 41392 0 0 3 0x14280 nfsidl nfsio 17522 382934 0 0 3 0x14280 nfsidl nfsio 55539 158598 0 0 3 0x14280 nfsidl nfsio 72253 169869 0 0 3 0x14280 nfsidl nfsio 20831 163981 0 0 3 0x14280 nfsidl nfsio 27844 494536 0 0 3 0x14280 nfsidl nfsio 55396 415424 0 0 3 0x14280 nfsidl nfsio 2917 51753 0 0 3 0x14280 nfsidl nfsio 83334 333204 0 0 3 0x14280 nfsidl nfsio 8693 89186 0 0 3 0x14280 nfsidl nfsio 3157 496065 0 0 3 0x14280 nfsidl nfsio 63674 249132 0 0 3 0x14280 nfsidl nfsio 9060 391598 0 0 3 0x14280 nfsidl nfsio 3594 362760 0 0 3 0x14200 bored sosplice 26701 86308 16680 0 3 0x82 nanosleep syz-executor.1 42264 365881 16680 0 2 0x2 syz-executor.0 16680 231078 48868 0 3 0x82 thrsleep syz-fuzzer 16680 342606 48868 0 3 0x4000082 nanosleep syz-fuzzer 16680 314124 48868 0 2 0x4000002 syz-fuzzer 16680 448715 48868 0 3 0x4000082 thrsleep syz-fuzzer 16680 118809 48868 0 2 0x4000002 syz-fuzzer 16680 382589 48868 0 3 0x4000082 thrsleep syz-fuzzer 16680 259139 48868 0 3 0x4000082 thrsleep syz-fuzzer 16680 520872 48868 0 3 0x4000082 thrsleep syz-fuzzer 16680 133155 48868 0 3 0x4000082 thrsleep syz-fuzzer 16680 187159 48868 0 3 0x4000082 thrsleep syz-fuzzer 48868 175988 20232 0 3 0x10008a pause ksh 20232 512741 47601 0 3 0x92 select sshd 45896 101042 1 0 3 0x100083 ttyin getty 47601 119448 1 0 3 0x80 select sshd 16897 217788 1799 74 3 0x100092 bpf pflogd 1799 492345 1 0 3 0x80 netio pflogd 69731 314339 24562 73 3 0x100090 kqread syslogd 24562 71943 1 0 3 0x100082 netio syslogd 61320 387207 1 77 3 0x100090 poll dhclient 53053 351373 1 0 3 0x80 poll dhclient 2991 319970 0 0 3 0x14200 bored smr 50734 519135 0 0 2 0x14200 zerothread 70566 369076 0 0 3 0x14200 aiodoned aiodoned 74228 121402 0 0 3 0x14200 syncer update 96619 483536 0 0 3 0x14200 cleaner cleaner 32855 281778 0 0 3 0x14200 reaper reaper 93232 299560 0 0 3 0x14200 pgdaemon pagedaemon 6687 404416 0 0 3 0x14200 bored crynlk 14341 389883 0 0 3 0x14200 bored crypto 68437 429892 0 0 3 0x40014200 acpi0 acpi0 79598 290080 0 0 3 0x40014200 idle1 90797 407858 0 0 3 0x14200 bored softnet 38649 342442 0 0 3 0x14200 bored systqmp 45913 486331 0 0 3 0x14200 bored systq 61770 17621 0 0 3 0x40014200 bored softclock 73207 123937 0 0 3 0x40014200 idle0 1 451753 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 6402 (syz-executor.1) thread 0xffff800020e04ae8 (431687) exclusive rwlock netlock r = 0 (0xffffffff82700598) #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 (0xffffffff828c5528) #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 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9493 6405K 7108K 78643K 11469 0 pcb 13 8K 8K 78643K 73 0 rtable 86 6K 9K 78643K 331 0 ifaddr 61 13K 13K 78643K 99 0 counters 43 33K 34K 78643K 51 0 ioctlops 0 0K 4K 78643K 1553 0 iov 0 0K 16K 78643K 24 0 mount 1 1K 1K 78643K 1 0 vnodes 1231 77K 78K 78643K 1435 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 3 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 36 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 6 17K 25K 78643K 257 0 sigio 0 0K 0K 78643K 2 0 proc 60 63K 95K 78643K 458 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 18 0 in_multi 37 2K 2K 78643K 91 0 ether_multi 1 0K 0K 78643K 8 0 mrt 0 0K 0K 78643K 2 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 67 307K 307K 78643K 67 0 exec 0 0K 1K 78643K 215 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 129 39K 39K 78643K 1789 0 UVM aobj 5 2K 2K 78643K 5 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 26 0 NDP 9 0K 0K 78643K 21 0 temp 96 3858K 3922K 78643K 4749 0 kqueue 3 4K 8K 78643K 7 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 6 0 2 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 23 0 21 1 0 1 1 0 8 0 rtentry 112 63 0 37 2 1 1 2 0 8 0 unpcb 120 142 0 132 1 0 1 1 0 8 0 syncache 264 8 0 8 3 3 0 1 0 8 0 tcpqe 32 904 0 904 4 4 0 2 0 8 0 tcpcb 544 243 0 237 1 0 1 1 0 8 0 inpcb 296 615 0 605 4 2 2 2 0 8 1 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 12 0 9 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 ppxss 1136 1 0 1 1 1 0 1 0 8 0 pfstscr 40 2 0 2 1 1 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 21 0 16 2 1 1 1 0 8 0 pfstitem 24 16 0 8 1 0 1 1 0 8 0 pfstkey 112 18 0 10 1 0 1 1 0 8 0 pfstate 328 16 0 8 2 0 2 2 0 8 0 pfsrctr 152 11 0 10 1 0 1 1 0 8 0 pfrule 1360 29 0 25 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 361 0 218 14 5 9 12 0 8 0 art_table 32 362 0 218 2 0 2 2 0 8 0 art_node 16 62 0 40 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 1 1 1 0 1 0 8 0 semapl 112 34 0 24 1 0 1 1 0 8 0 shmpl 112 2 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1712 0 303 91 2 89 89 0 8 0 ffsino 272 1712 0 303 96 1 95 95 0 8 0 nchpl 144 2263 0 650 61 1 60 61 0 8 0 uvmvnodes 72 1943 0 0 36 0 36 36 0 8 0 vnodes 208 1943 0 0 103 0 103 103 0 8 0 namei 1024 6382 0 6382 6 5 1 1 0 8 1 percpumem 16 36 0 4 1 0 1 1 0 8 0 vcpupl 1984 2 0 0 1 0 1 1 0 8 0 vmpool 560 2 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 9 0 6 2 1 1 1 0 8 0 scxspl 192 6567 0 6567 9 8 1 6 0 8 1 plimitpl 152 27 0 19 1 0 1 1 0 8 0 sigapl 424 493 0 440 6 0 6 6 0 8 0 futexpl 56 3773 0 3773 4 3 1 1 0 8 1 knotepl 112 66 0 47 1 0 1 1 0 8 0 kqueuepl 144 40 0 38 1 0 1 1 0 8 0 pipepl 304 105 0 95 1 0 1 1 0 8 0 fdescpl 496 457 0 440 3 0 3 3 0 8 0 filepl 152 2917 0 2815 6 1 5 5 0 8 1 lockfpl 104 37 0 36 1 0 1 1 0 8 0 lockfspl 48 13 0 12 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 20 0 9 1 0 1 1 0 8 0 ucredpl 96 299 0 289 1 0 1 1 0 8 0 zombiepl 144 440 0 440 3 2 1 1 0 8 1 processpl 992 493 0 440 10 3 7 7 0 8 0 procpl 624 1024 0 961 6 0 6 6 0 8 1 srpgc 64 2 0 2 1 1 0 1 0 8 0 sosppl 128 4 0 4 2 2 0 1 0 8 0 sockpl 400 782 0 760 9 5 4 4 0 8 1 mcl64k 65536 7 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 6 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 5 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 281 0 0 35 0 35 35 0 8 0 mtagpl 96 15 0 0 1 0 1 1 0 8 0 mbufpl 256 311 0 0 19 0 19 19 0 8 0 bufpl 280 3627 0 132 250 0 250 250 0 8 0 anonpl 16 58292 0 41893 73 6 67 67 0 124 0 amapchunkpl 152 2821 0 2675 16 8 8 13 0 158 0 amappl16 192 1838 0 946 45 0 45 45 0 8 0 amappl15 184 113 0 110 1 0 1 1 0 8 0 amappl14 176 24 0 19 1 0 1 1 0 8 0 amappl13 168 29 0 25 1 0 1 1 0 8 0 amappl12 160 117 0 115 2 1 1 1 0 8 0 amappl11 152 63 0 47 1 0 1 1 0 8 0 amappl10 144 134 0 126 1 0 1 1 0 8 0 amappl9 136 385 0 384 1 0 1 1 0 8 0 amappl8 128 357 0 323 2 0 2 2 0 8 0 amappl7 120 117 0 106 1 0 1 1 0 8 0 amappl6 112 34 0 24 1 0 1 1 0 8 0 amappl5 104 481 0 464 1 0 1 1 0 8 0 amappl4 96 490 0 461 1 0 1 1 0 8 0 amappl3 88 111 0 104 1 0 1 1 0 8 0 amappl2 80 2809 0 2734 2 0 2 2 0 8 0 amappl1 72 22069 0 21631 22 12 10 17 0 8 0 amappl 80 1262 0 1214 3 1 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 4 0 0 1 0 1 1 0 8 0 uaddrrnd 24 459 0 440 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 459 0 440 1 0 1 1 0 8 0 vmmpekpl 168 7629 0 7590 2 0 2 2 0 8 0 vmmpepl 168 64931 0 62784 135 38 97 118 0 357 3 vmsppl 368 458 0 440 2 0 2 2 0 8 0 pdppl 4096 925 0 882 7 1 6 6 0 8 0 pvpl 32 194495 0 174783 182 20 162 169 0 265 1 pmappl 232 458 0 440 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 298 0 22 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(ffffffff8275aff0) 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(ffffffff828c5320) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828c5320) at __mp_lock+0x127 sys/kern/kern_lock.c:147 softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:89 Xsoftclock() at Xsoftclock+0x1f end of kernel end trace frame: 0x7f7ffffd5480, count: -6 ddb{0}> machine ddbcpu 1 Stopped at ifa_update_broadaddr+0x1f: movzbl 0(%r15),%r12d ddb{1}> trace ifa_update_broadaddr(ffff800000aef800,ffff800000aa0400,ffff8000230fc5c0) at ifa_update_broadaddr+0x1f sys/net/if.c:2968 in_ioctl(80206913,ffff8000230fc5b0,ffff800000aef800,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd80642bae48,80206913,ffff8000230fc5b0,ffff800020e04ae8) at ifioctl+0xe70 sys/net/if.c:2180 soo_ioctl(fffffd8066b3be60,80206913,ffff8000230fc5b0,ffff800020e04ae8) at soo_ioctl+0x27c sys/kern/sys_socket.c:138 sys_ioctl(ffff800020e04ae8,ffff8000230fc6c8,ffff8000230fc710) at sys_ioctl+0x4a5 syscall(ffff8000230fc790) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000230fc790) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x445f5a1f530, count: -7