uvm_fault(0xfffffd80666c02f0, 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(0xfffffd80666c02f0, 0x0, 0, 1) -> e ifa_update_broadaddr(ffff800000af6000,ffff800000b2a200,ffff800023f2cec0) at ifa_update_broadaddr+0x1f sys/net/if.c:3073 end trace frame: 0xffff800023f2cd70, count: 0 ddb{0}> trace ifa_update_broadaddr(ffff800000af6000,ffff800000b2a200,ffff800023f2cec0) at ifa_update_broadaddr+0x1f sys/net/if.c:3073 in_ioctl(80206913,ffff800023f2ceb0,ffff800000af6000,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd806b10f330,80206913,ffff800023f2ceb0,ffff800020e38608) at ifioctl+0xe70 sys/net/if.c:2285 soo_ioctl(fffffd80664ed310,80206913,ffff800023f2ceb0,ffff800020e38608) at soo_ioctl+0x27c sys/kern/sys_socket.c:138 sys_ioctl(ffff800020e38608,ffff800023f2cfc8,ffff800023f2d010) at sys_ioctl+0x4a5 syscall(ffff800023f2d090) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023f2d090) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x739efb8c200, count: -7 ddb{0}> show registers rdi 0xffffffff8213487b ifa_update_broadaddr+0x1b rsi 0xe3 rbp 0xffff800023f2ccd0 rbx 0x10 rdx 0xe4 rcx 0xffff800023307000 rax 0xffff800023307000 r8 0xffffffff81dd24a7 in_ioctl+0x387 r9 0x7 r10 0x3 r11 0x34723a19e77ea653 r12 0xffff800023f2cec0 r13 0 r14 0xffff800023f2cec0 r15 0 rip 0xffffffff8213487f ifa_update_broadaddr+0x1f cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800023f2cc90 ss 0x10 ifa_update_broadaddr+0x1f: movzbl 0(%r15),%r12d ddb{0}> show proc PROC (syz-executor.1) pid=259437 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020e37018,0xffffffff828bfa58 process=0xffff800020e24fb0 user=0xffff800023f28000, vmspace=0xfffffd80666c02f0 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 56914 45618 31053 0 2 0 syz-executor.1 56914 78680 31053 0 2 0x4000000 syz-executor.1 *56914 259437 31053 0 7 0x4000000 syz-executor.1 19520 29249 0 0 3 0x14280 nfsidl nfsio 47888 319098 0 0 3 0x14280 nfsidl nfsio 49572 418198 0 0 3 0x14280 nfsidl nfsio 52816 159070 0 0 3 0x14280 nfsidl nfsio 77485 61824 0 0 3 0x14280 nfsidl nfsio 5460 238328 0 0 3 0x14280 nfsidl nfsio 92885 25504 0 0 3 0x14280 nfsidl nfsio 84329 502907 0 0 3 0x14280 nfsidl nfsio 51720 43938 0 0 3 0x14280 nfsidl nfsio 80827 151622 0 0 3 0x14280 nfsidl nfsio 22563 248063 0 0 3 0x14280 nfsidl nfsio 60049 521109 0 0 3 0x14280 nfsidl nfsio 48382 285500 0 0 3 0x14280 nfsidl nfsio 32616 146899 0 0 3 0x14280 nfsidl nfsio 62601 127527 0 0 3 0x14280 nfsidl nfsio 22299 359448 0 0 3 0x14280 nfsidl nfsio 56666 489760 0 0 3 0x14280 nfsidl nfsio 34044 147004 0 0 3 0x14280 nfsidl nfsio 15970 513980 0 0 3 0x14280 nfsidl nfsio 44689 478662 0 0 3 0x14280 nfsidl nfsio 82236 38288 1 0 3 0x100083 ttyin getty 52923 135338 0 0 3 0x14200 acct acct 26296 342808 0 0 3 0x14200 bored sosplice 31053 36683 74084 0 3 0x82 nanosleep syz-executor.1 74964 184321 74084 0 3 0x82 piperd syz-executor.0 74084 457175 8174 0 7 0x2 syz-fuzzer 74084 63962 8174 0 3 0x4000082 nanosleep syz-fuzzer 74084 180137 8174 0 3 0x4000082 thrsleep syz-fuzzer 74084 341107 8174 0 3 0x4000082 thrsleep syz-fuzzer 74084 300143 8174 0 3 0x4000082 thrsleep syz-fuzzer 74084 243532 8174 0 3 0x4000082 kqread syz-fuzzer 74084 197907 8174 0 3 0x4000082 thrsleep syz-fuzzer 74084 503567 8174 0 3 0x4000082 thrsleep syz-fuzzer 74084 302732 8174 0 3 0x4000082 thrsleep syz-fuzzer 74084 478016 8174 0 3 0x4000082 thrsleep syz-fuzzer 8174 509634 12143 0 3 0x10008a pause ksh 12143 278587 8447 0 3 0x92 select sshd 8447 300342 1 0 3 0x80 select sshd 79565 227074 93589 74 3 0x100092 bpf pflogd 93589 297561 1 0 3 0x80 netio pflogd 59060 18526 91211 73 3 0x100090 kqread syslogd 91211 347397 1 0 3 0x100082 netio syslogd 53363 106476 1 77 3 0x100090 poll dhclient 39081 74242 1 0 3 0x80 poll dhclient 82159 228995 0 0 3 0x14200 bored smr 41073 151961 0 0 2 0x14200 zerothread 32671 250492 0 0 3 0x14200 aiodoned aiodoned 10144 450994 0 0 3 0x14200 syncer update 27306 240213 0 0 3 0x14200 cleaner cleaner 84402 16385 0 0 3 0x14200 reaper reaper 40941 290149 0 0 3 0x14200 pgdaemon pagedaemon 79220 242157 0 0 3 0x14200 bored crynlk 99678 57848 0 0 3 0x14200 bored crypto 81502 166629 0 0 3 0x40014200 acpi0 acpi0 55172 118309 0 0 3 0x40014200 idle1 35602 225403 0 0 3 0x14200 bored softnet 81704 317668 0 0 3 0x14200 bored systqmp 51603 333122 0 0 3 0x14200 bored systq 68603 58534 0 0 3 0x40014200 bored softclock 57473 432590 0 0 3 0x40014200 idle0 1 359594 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 56914 (syz-executor.1) thread 0xffff800020e38608 (259437) exclusive rwlock netlock r = 0 (0xffffffff8279b1f8) #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:2285 #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 (0xffffffff828bf0e0) #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{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9513 6415K 6927K 78643K 11494 0 pcb 13 8K 8K 78643K 81 0 rtable 91 12K 13K 78643K 362 0 ifaddr 79 16K 16K 78643K 121 0 counters 43 33K 34K 78643K 53 0 ioctlops 0 0K 4K 78643K 1594 0 iov 0 0K 16K 78643K 57 0 mount 1 1K 1K 78643K 1 0 vnodes 1216 76K 77K 78643K 1474 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 8 0 VM map 2 1K 1K 78643K 2 0 sem 11 1K 1K 78643K 17 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 550 0 sigio 0 0K 0K 78643K 42 0 proc 61 63K 95K 78643K 482 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 43 0 in_multi 67 3K 3K 78643K 113 0 ether_multi 1 0K 0K 78643K 9 0 mrt 0 0K 0K 78643K 5 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 233 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 131 72K 88K 78643K 2731 0 UVM aobj 18 2K 2K 78643K 19 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 59 0 NDP 11 0K 0K 78643K 23 0 temp 115 3879K 3943K 78643K 5682 0 kqueue 3 4K 18K 78643K 43 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 9 0 2 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 39 0 37 1 0 1 1 0 8 0 rtentry 112 68 0 36 2 0 2 2 0 8 0 unpcb 120 230 0 219 1 0 1 1 0 8 0 syncache 264 6 0 6 2 2 0 1 0 8 0 tcpqe 32 51 0 51 2 2 0 1 0 8 0 tcpcb 544 316 0 309 1 0 1 1 0 8 0 inpcb 296 1121 0 1110 2 0 2 2 0 8 1 rttmr 72 2 0 2 1 1 0 1 0 8 0 nd6 48 11 0 7 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 pffrent 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 17 0 15 1 0 1 1 0 8 0 pfstitem 24 11 0 5 1 0 1 1 0 8 0 pfstkey 112 11 0 5 1 0 1 1 0 8 0 pfstate 328 11 0 5 1 0 1 1 0 8 0 pfrule 1360 34 0 22 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 276 0 140 12 1 11 12 0 8 0 art_table 32 277 0 140 2 0 2 2 0 8 0 art_node 16 67 0 43 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 0 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 9 0 0 1 0 1 1 0 8 0 shmpl 112 16 0 1 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2095 0 691 89 0 89 89 0 8 0 ffsino 272 2095 0 691 95 1 94 95 0 8 0 nchpl 144 3028 0 1431 61 0 61 61 0 8 1 uvmvnodes 72 2334 0 0 43 0 43 43 0 8 0 vnodes 208 2334 0 0 123 0 123 123 0 8 0 namei 1024 8228 0 8228 1 0 1 1 0 8 1 percpumem 16 37 0 5 1 0 1 1 0 8 0 vcpupl 1984 10 0 0 2 0 2 2 0 8 0 vmpool 560 12 0 2 1 0 1 1 0 8 0 pfiaddrpl 120 6 0 4 1 0 1 1 0 8 0 scsiplug 64 1 0 1 1 0 1 1 0 8 1 scxspl 192 9237 0 9237 10 7 3 7 0 8 3 plimitpl 152 46 0 38 1 0 1 1 0 8 0 sigapl 424 788 0 735 7 0 7 7 0 8 1 futexpl 56 7951 0 7951 1 0 1 1 0 8 1 knotepl 112 101 0 82 1 0 1 1 0 8 0 kqueuepl 144 79 0 77 1 0 1 1 0 8 0 pipepl 304 159 0 149 2 1 1 2 0 8 0 fdescpl 496 751 0 735 3 0 3 3 0 8 0 filepl 152 4352 0 4250 5 0 5 5 0 8 1 lockfpl 104 105 0 104 1 0 1 1 0 8 0 lockfspl 48 33 0 32 1 0 1 1 0 8 0 sessionpl 112 19 0 8 1 0 1 1 0 8 0 pgrppl 48 27 0 16 1 0 1 1 0 8 0 ucredpl 96 358 0 349 1 0 1 1 0 8 0 zombiepl 144 735 0 735 1 0 1 1 0 8 1 processpl 992 788 0 735 7 0 7 7 0 8 0 procpl 624 1945 0 1881 6 0 6 6 0 8 1 srpgc 64 2 0 2 1 1 0 1 0 8 0 sosppl 128 3 0 3 2 2 0 1 0 8 0 sockpl 400 1393 0 1369 4 0 4 4 0 8 0 mcl64k 65536 8 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 9 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 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 190 0 0 23 0 23 23 0 8 0 mtagpl 96 43 0 0 2 0 2 2 0 8 0 mbufpl 256 287 0 0 17 0 17 17 0 8 0 bufpl 280 4492 0 147 311 0 311 311 0 8 0 anonpl 16 85698 0 67925 81 1 80 80 0 124 6 amapchunkpl 152 5203 0 5041 32 14 18 21 0 158 9 amappl16 192 3137 0 2190 51 1 50 51 0 8 2 amappl15 184 1 0 1 1 1 0 1 0 8 0 amappl14 176 35 0 28 1 0 1 1 0 8 0 amappl13 168 297 0 292 1 0 1 1 0 8 0 amappl12 160 279 0 274 2 1 1 1 0 8 0 amappl11 152 62 0 47 1 0 1 1 0 8 0 amappl10 144 19 0 12 1 0 1 1 0 8 0 amappl9 136 637 0 635 1 0 1 1 0 8 0 amappl8 128 608 0 572 2 0 2 2 0 8 0 amappl7 120 118 0 107 1 0 1 1 0 8 0 amappl6 112 23 0 20 1 0 1 1 0 8 0 amappl5 104 386 0 369 1 0 1 1 0 8 0 amappl4 96 766 0 736 1 0 1 1 0 8 0 amappl3 88 396 0 387 1 0 1 1 0 8 0 amappl2 80 5063 0 4992 2 0 2 2 0 8 0 amappl1 72 31069 0 30613 23 13 10 18 0 8 0 amappl 80 2187 0 2139 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 18 0 1 1 0 1 1 0 8 0 uaddrrnd 24 763 0 737 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 763 0 737 1 0 1 1 0 8 0 vmmpekpl 168 9999 0 9952 3 0 3 3 0 8 0 vmmpepl 168 102911 0 100745 125 23 102 121 0 357 7 vmsppl 368 762 0 737 3 0 3 3 0 8 0 pdppl 4096 1533 0 1484 7 0 7 7 0 8 0 pvpl 32 275381 0 254657 193 3 190 190 0 265 21 pmappl 232 762 0 737 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 270 0 5 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace ifa_update_broadaddr(ffff800000af6000,ffff800000b2a200,ffff800023f2cec0) at ifa_update_broadaddr+0x1f sys/net/if.c:3073 in_ioctl(80206913,ffff800023f2ceb0,ffff800000af6000,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd806b10f330,80206913,ffff800023f2ceb0,ffff800020e38608) at ifioctl+0xe70 sys/net/if.c:2285 soo_ioctl(fffffd80664ed310,80206913,ffff800023f2ceb0,ffff800020e38608) at soo_ioctl+0x27c sys/kern/sys_socket.c:138 sys_ioctl(ffff800020e38608,ffff800023f2cfc8,ffff800023f2d010) at sys_ioctl+0x4a5 syscall(ffff800023f2d090) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023f2d090) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x739efb8c200, 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 end of kernel end trace frame: 0xc0002d85f0, count: -3