uvm_fault(0xfffffd80649dbb90, 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(0xfffffd80649dbb90, 0x0, 0, 1) -> e ifa_update_broadaddr(ffff800000ac6000,ffff800000b32000,ffff800020ed8330) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 end trace frame: 0xffff800020ed81e0, count: 0 ddb{1}> trace ifa_update_broadaddr(ffff800000ac6000,ffff800000b32000,ffff800020ed8330) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff800020ed8320,ffff800000ac6000,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd8064206980,80206913,ffff800020ed8320,ffff800020ed9028) at ifioctl+0xe70 sys/net/if.c:2282 soo_ioctl(fffffd806662ae58,80206913,ffff800020ed8320,ffff800020ed9028) at soo_ioctl+0x27c sys/kern/sys_socket.c:138 sys_ioctl(ffff800020ed9028,ffff800020ed8438,ffff800020ed8480) at sys_ioctl+0x4a5 syscall(ffff800020ed8500) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020ed8500) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd535ff7b590, count: -7 ddb{1}> show registers rdi 0xffffffff8204cecb ifa_update_broadaddr+0x1b rsi 0xe0 rbp 0xffff800020ed8140 rbx 0x10 rdx 0xe1 rcx 0xffff800020ee1000 rax 0xffff800020ee1000 r8 0xffffffff81f09997 in_ioctl+0x387 r9 0x7 r10 0x3 r11 0x3ae130d67f2f7de r12 0xffff800020ed8330 r13 0 r14 0xffff800020ed8330 r15 0 rip 0xffffffff8204cecf ifa_update_broadaddr+0x1f cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800020ed8100 ss 0x10 ifa_update_broadaddr+0x1f: movzbl 0(%r15),%r12d ddb{1}> show proc PROC (syz-executor.0) pid=40215 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=80, nice=20 forw=0xffffffffffffffff, list=0xffff800020ed9ec8,0xffffffff828fee10 process=0xffff800023f84fb0 user=0xffff800020ed3000, vmspace=0xfffffd80649dbb90 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 39214 414043 16953 0 7 0 syz-executor.0 *39214 40215 16953 0 7 0x4000000 syz-executor.0 85948 383049 0 0 3 0x14280 nfsidl nfsio 23997 278261 0 0 3 0x14280 nfsidl nfsio 52464 367251 0 0 3 0x14280 nfsidl nfsio 77752 276388 0 0 3 0x14280 nfsidl nfsio 31670 222279 0 0 3 0x14280 nfsidl nfsio 76165 302588 0 0 3 0x14280 nfsidl nfsio 31710 512648 0 0 3 0x14280 nfsidl nfsio 38931 216412 0 0 3 0x14280 nfsidl nfsio 94630 277324 0 0 3 0x14280 nfsidl nfsio 39350 454744 0 0 3 0x14280 nfsidl nfsio 27653 520160 0 0 3 0x14280 nfsidl nfsio 48224 247071 0 0 3 0x14280 nfsidl nfsio 49407 196407 0 0 3 0x14280 nfsidl nfsio 95742 193383 0 0 3 0x14280 nfsidl nfsio 70247 100276 0 0 3 0x14280 nfsidl nfsio 58235 2715 0 0 3 0x14280 nfsidl nfsio 69657 22420 0 0 3 0x14280 nfsidl nfsio 54839 480586 0 0 3 0x14280 nfsidl nfsio 8059 237197 0 0 3 0x14280 nfsidl nfsio 48387 367244 0 0 3 0x14280 nfsidl nfsio 40422 429154 0 0 3 0x14200 bored sosplice 67775 288431 75181 0 3 0x82 nanosleep syz-executor.1 16953 477171 75181 0 3 0x82 nanosleep syz-executor.0 75181 495127 88832 0 3 0x82 thrsleep syz-fuzzer 75181 356690 88832 0 3 0x4000082 nanosleep syz-fuzzer 75181 249835 88832 0 3 0x4000082 thrsleep syz-fuzzer 75181 97075 88832 0 3 0x4000082 thrsleep syz-fuzzer 75181 38677 88832 0 3 0x4000082 thrsleep syz-fuzzer 75181 333867 88832 0 3 0x4000082 thrsleep syz-fuzzer 75181 12556 88832 0 3 0x4000082 thrsleep syz-fuzzer 75181 303118 88832 0 3 0x4000082 thrsleep syz-fuzzer 75181 259444 88832 0 3 0x4000082 thrsleep syz-fuzzer 75181 36176 88832 0 3 0x4000082 kqread syz-fuzzer 88832 150600 77063 0 3 0x10008a pause ksh 77063 86589 60952 0 3 0x92 select sshd 43988 261570 1 0 3 0x100083 ttyin getty 60952 300915 1 0 3 0x80 select sshd 17349 40044 73319 74 3 0x100092 bpf pflogd 73319 63996 1 0 3 0x80 netio pflogd 98109 382021 78234 73 3 0x100090 kqread syslogd 78234 2315 1 0 3 0x100082 netio syslogd 76721 337131 1 77 3 0x100090 poll dhclient 71089 422716 1 0 3 0x80 poll dhclient 9289 149519 0 0 3 0x14200 bored smr 30685 250418 0 0 3 0x14200 pgzero zerothread 66284 100018 0 0 3 0x14200 aiodoned aiodoned 91093 113147 0 0 3 0x14200 syncer update 77974 29500 0 0 3 0x14200 cleaner cleaner 61761 216430 0 0 3 0x14200 reaper reaper 65003 361753 0 0 3 0x14200 pgdaemon pagedaemon 73951 179122 0 0 3 0x14200 bored crynlk 9408 192815 0 0 3 0x14200 bored crypto 93040 357628 0 0 3 0x40014200 acpi0 acpi0 65623 163022 0 0 3 0x40014200 idle1 38788 23370 0 0 3 0x14200 bored softnet 64237 306442 0 0 3 0x14200 bored systqmp 18121 511067 0 0 3 0x14200 bored systq 71685 292536 0 0 3 0x40014200 bored softclock 17863 225271 0 0 3 0x40014200 idle0 1 352455 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 39214 (syz-executor.0) thread 0xffff800020ed9028 (40215) exclusive rwlock netlock r = 0 (0xffffffff8278f3d8) #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:2282 #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 (0xffffffff828b55a0) #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 9551 6579K 7133K 78643K 12170 0 pcb 13 8K 8K 78643K 152 0 rtable 127 11K 11K 78643K 584 0 ifaddr 102 19K 20K 78643K 253 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 67 0 ioctlops 0 0K 4K 78643K 1636 0 iov 0 0K 32K 78643K 105 0 mount 1 1K 1K 78643K 1 0 vnodes 1212 76K 77K 78643K 1676 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 20 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 287 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 1053 0 sigio 0 0K 0K 78643K 18 0 proc 63 63K 95K 78643K 564 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 52 0 in_multi 78 3K 3K 78643K 358 0 ether_multi 1 0K 0K 78643K 15 0 mrt 1 0K 0K 78643K 10 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 273 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 72K 88K 78643K 4427 0 UVM aobj 47 4K 4K 78643K 52 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 117 0 NDP 15 0K 0K 78643K 71 0 temp 150 3881K 3945K 78643K 7774 0 kqueue 3 4K 14K 78643K 316 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 55 0 53 1 0 1 1 0 8 0 rtentry 112 140 0 102 2 0 2 2 0 8 0 unpcb 120 2870 0 2860 5 4 1 2 0 8 0 syncache 264 11 0 11 4 4 0 1 0 8 0 tcpqe 32 249 0 249 3 3 0 1 0 8 0 tcpcb 544 289 0 282 2 1 1 2 0 8 0 inpcb 296 972 0 961 4 2 2 2 0 8 1 rttmr 72 5 0 4 1 0 1 1 0 8 0 nd6 48 68 0 63 1 0 1 1 0 8 0 pkpcb 40 10 0 10 2 1 1 1 0 8 1 pfstscr 40 8 0 8 4 3 1 1 0 8 1 pffrag 232 8 0 6 2 1 1 1 0 482 0 pffrnode 88 8 0 6 2 1 1 1 0 8 0 pffrent 40 62 0 60 2 1 1 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 24 0 11 3 1 2 2 0 8 0 pfstitem 24 37 0 31 1 0 1 1 0 8 0 pfstkey 112 46 0 40 1 0 1 1 0 8 0 pfstate 328 41 0 35 2 0 2 2 0 8 0 pfrule 1360 40 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 1209 0 998 24 8 16 17 0 8 2 art_table 32 1210 0 998 3 1 2 3 0 8 0 art_node 16 137 0 102 1 0 1 1 0 8 0 sysvmsgpl 40 28 0 15 1 0 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 283 0 273 1 0 1 1 0 8 0 shmpl 112 49 0 5 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2947 0 1549 90 2 88 89 0 8 0 ffsino 272 2947 0 1549 95 0 95 95 0 8 0 nchpl 144 4758 0 3144 61 1 60 61 0 8 0 uvmvnodes 72 3327 0 0 61 0 61 61 0 8 0 vnodes 208 3327 0 0 176 0 176 176 0 8 0 namei 1024 13320 0 13320 1 0 1 1 0 8 1 percpumem 16 44 0 12 1 0 1 1 0 8 0 vcpupl 1984 10 0 0 2 0 2 2 0 8 0 vmpool 560 14 0 4 1 0 1 1 0 8 0 pfiaddrpl 120 11 0 1 2 1 1 1 0 8 0 scsiplug 64 1 0 1 1 1 0 1 0 8 0 scxspl 192 13513 0 13513 12 11 1 7 0 8 1 plimitpl 152 76 0 68 1 0 1 1 0 8 0 sigapl 424 1289 0 1237 6 0 6 6 0 8 0 futexpl 56 15852 0 15852 1 0 1 1 0 8 1 knotepl 112 399 0 380 1 0 1 1 0 8 0 kqueuepl 144 577 0 575 1 0 1 1 0 8 0 pipepl 304 192 0 182 6 5 1 2 0 8 0 fdescpl 496 1253 0 1237 3 0 3 3 0 8 0 filepl 152 9625 0 9523 9 4 5 7 0 8 1 lockfpl 104 194 0 193 1 0 1 1 0 8 0 lockfspl 48 71 0 70 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 32 0 21 1 0 1 1 0 8 0 ucredpl 96 1084 0 1074 1 0 1 1 0 8 0 zombiepl 144 1237 0 1236 1 0 1 1 0 8 0 processpl 992 1289 0 1236 7 0 7 7 0 8 0 procpl 624 3641 0 3578 6 0 6 6 0 8 0 srpgc 64 2 0 2 1 1 0 1 0 8 0 sosppl 128 6 0 6 2 2 0 1 0 8 0 sockpl 400 3912 0 3889 10 5 5 5 0 8 2 mcl64k 65536 9 0 0 2 0 2 2 0 8 0 mcl16k 16384 5 0 0 1 0 1 1 0 8 0 mcl12k 12288 9 0 0 1 0 1 1 0 8 0 mcl9k 9216 8 0 0 1 0 1 1 0 8 0 mcl8k 8192 9 0 0 2 0 2 2 0 8 0 mcl4k 4096 10 0 0 2 0 2 2 0 8 0 mcl2k2 2112 6 0 0 1 0 1 1 0 8 0 mcl2k 2048 181 0 0 22 0 22 22 0 8 1 mtagpl 96 87 0 0 3 0 3 3 0 8 0 mbufpl 256 516 0 0 28 0 28 28 0 8 0 bufpl 280 5032 0 137 350 0 350 350 0 8 0 anonpl 16 142878 0 125223 115 26 89 89 0 124 15 amapchunkpl 152 7268 0 7117 21 13 8 20 0 158 0 amappl16 192 5743 0 4770 97 40 57 61 0 8 8 amappl15 184 520 0 516 1 0 1 1 0 8 0 amappl14 176 27 0 21 1 0 1 1 0 8 0 amappl13 168 532 0 528 1 0 1 1 0 8 0 amappl12 160 516 0 512 1 0 1 1 0 8 0 amappl11 152 60 0 45 1 0 1 1 0 8 0 amappl10 144 531 0 524 1 0 1 1 0 8 0 amappl9 136 381 0 380 1 0 1 1 0 8 0 amappl8 128 370 0 337 2 0 2 2 0 8 0 amappl7 120 635 0 621 1 0 1 1 0 8 0 amappl6 112 24 0 19 2 1 1 1 0 8 0 amappl5 104 666 0 649 1 0 1 1 0 8 0 amappl4 96 1006 0 975 1 0 1 1 0 8 0 amappl3 88 640 0 633 1 0 1 1 0 8 0 amappl2 80 9137 0 9064 2 0 2 2 0 8 0 amappl1 72 47702 0 47260 23 13 10 18 0 8 0 amappl 80 3882 0 3834 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 51 0 5 1 0 1 1 0 8 0 uaddrrnd 24 1267 0 1241 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1267 0 1241 1 0 1 1 0 8 0 vmmpekpl 168 13224 0 13177 3 0 3 3 0 8 0 vmmpepl 168 169749 0 167552 162 49 113 118 0 357 11 vmsppl 368 1266 0 1241 3 0 3 3 0 8 0 pdppl 4096 2541 0 2492 7 0 7 7 0 8 0 pvpl 32 413842 0 393366 237 32 205 210 0 265 36 pmappl 232 1266 0 1241 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 304 0 19 9 0 9 9 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff82759ff0) 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(ffffffff828b5398) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828b5398) 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: 0x7f7ffffd5dc0, count: -6 ddb{0}> machine ddbcpu 1 Stopped at ifa_update_broadaddr+0x1f: movzbl 0(%r15),%r12d ddb{1}> trace ifa_update_broadaddr(ffff800000ac6000,ffff800000b32000,ffff800020ed8330) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff800020ed8320,ffff800000ac6000,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd8064206980,80206913,ffff800020ed8320,ffff800020ed9028) at ifioctl+0xe70 sys/net/if.c:2282 soo_ioctl(fffffd806662ae58,80206913,ffff800020ed8320,ffff800020ed9028) at soo_ioctl+0x27c sys/kern/sys_socket.c:138 sys_ioctl(ffff800020ed9028,ffff800020ed8438,ffff800020ed8480) at sys_ioctl+0x4a5 syscall(ffff800020ed8500) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020ed8500) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd535ff7b590, count: -7