login: uvm_fault(0xfffffd806648f010, 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(0xfffffd806648f010, 0x0, 0, 1) -> e ifa_update_broadaddr(ffff800000b0d800,ffff800000b3b500,ffff800021fd5380) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 end trace frame: 0xffff800021fd5230, count: 0 ddb{0}> trace ifa_update_broadaddr(ffff800000b0d800,ffff800000b3b500,ffff800021fd5380) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff800021fd5370,ffff800000b0d800,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd806c8f61a0,80206913,ffff800021fd5370,ffff800021afd9e8) at ifioctl+0xe70 sys/net/if.c:2282 soo_ioctl(fffffd806ca54140,80206913,ffff800021fd5370,ffff800021afd9e8) at soo_ioctl+0x27c sys/kern/sys_socket.c:138 sys_ioctl(ffff800021afd9e8,ffff800021fd5488,ffff800021fd54d0) at sys_ioctl+0x4a5 syscall(ffff800021fd5550) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021fd5550) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9342a2dabb0, count: -7 ddb{0}> show registers rdi 0xffffffff8182df6b ifa_update_broadaddr+0x1b rsi 0xe6 rbp 0xffff800021fd5190 rbx 0x10 rdx 0xe7 rcx 0xffff800022eff000 rax 0xffff800022eff000 r8 0xffffffff816b2707 in_ioctl+0x387 r9 0x7 r10 0x3 r11 0xde2cbd7dcad1a464 r12 0xffff800021fd5380 r13 0 r14 0xffff800021fd5380 r15 0 rip 0xffffffff8182df6f ifa_update_broadaddr+0x1f cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800021fd5150 ss 0x10 ifa_update_broadaddr+0x1f: movzbl 0(%r15),%r12d ddb{0}> show proc PROC (syz-executor.1) pid=253678 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=76, nice=20 forw=0xffffffffffffffff, list=0xffff800021afd778,0xffffffff828b51a0 process=0xffff800020eb4020 user=0xffff800021fd0000, vmspace=0xfffffd806648f010 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 90827 379522 46514 0 7 0 syz-executor.1 *90827 253678 46514 0 7 0x4000000 syz-executor.1 85139 13285 1 0 3 0x100083 ttyin getty 37372 219645 0 0 3 0x14280 nfsidl nfsio 11881 95561 0 0 3 0x14280 nfsidl nfsio 82205 70660 0 0 3 0x14280 nfsidl nfsio 65166 42897 0 0 3 0x14280 nfsidl nfsio 73198 336733 0 0 3 0x14280 nfsidl nfsio 29194 163063 0 0 3 0x14280 nfsidl nfsio 35479 495707 0 0 3 0x14280 nfsidl nfsio 90259 338146 0 0 3 0x14280 nfsidl nfsio 48667 77666 0 0 3 0x14280 nfsidl nfsio 95443 55349 0 0 3 0x14280 nfsidl nfsio 53368 251026 0 0 3 0x14280 nfsidl nfsio 77850 5898 0 0 3 0x14280 nfsidl nfsio 46103 131484 0 0 3 0x14280 nfsidl nfsio 60274 344678 0 0 3 0x14280 nfsidl nfsio 4044 319977 0 0 3 0x14280 nfsidl nfsio 30100 262459 0 0 3 0x14280 nfsidl nfsio 11953 359423 0 0 3 0x14280 nfsidl nfsio 21828 430498 0 0 3 0x14280 nfsidl nfsio 9916 294098 0 0 3 0x14280 nfsidl nfsio 41552 502190 0 0 3 0x14280 nfsidl nfsio 46514 491172 119 0 3 0x82 nanosleep syz-executor.1 44238 8814 0 0 3 0x14200 acct acct 13848 277247 0 0 3 0x14200 bored sosplice 61085 317181 119 0 3 0x82 nanosleep syz-executor.0 119 462034 94544 0 3 0x82 thrsleep syz-fuzzer 119 473901 94544 0 3 0x4000082 nanosleep syz-fuzzer 119 262708 94544 0 3 0x4000082 thrsleep syz-fuzzer 119 257979 94544 0 3 0x4000082 thrsleep syz-fuzzer 119 27044 94544 0 3 0x4000082 thrsleep syz-fuzzer 119 101687 94544 0 3 0x4000082 thrsleep syz-fuzzer 119 79703 94544 0 3 0x4000082 thrsleep syz-fuzzer 119 124536 94544 0 3 0x4000082 thrsleep syz-fuzzer 119 453548 94544 0 3 0x4000082 thrsleep syz-fuzzer 119 326913 94544 0 3 0x4000082 kqread syz-fuzzer 94544 67533 7764 0 3 0x10008a pause ksh 7764 133051 58978 0 3 0x92 select sshd 58978 363853 1 0 3 0x80 select sshd 41169 463649 83675 74 3 0x100092 bpf pflogd 83675 222353 1 0 3 0x80 netio pflogd 50995 204218 24946 73 3 0x100090 kqread syslogd 24946 171403 1 0 3 0x100082 netio syslogd 35709 455971 1 77 3 0x100090 poll dhclient 29326 291645 1 0 3 0x80 poll dhclient 84348 7700 0 0 3 0x14200 bored smr 6025 494440 0 0 3 0x14200 pgzero zerothread 24875 165642 0 0 3 0x14200 aiodoned aiodoned 79009 387460 0 0 3 0x14200 syncer update 42766 396502 0 0 3 0x14200 cleaner cleaner 91156 18291 0 0 3 0x14200 reaper reaper 35516 496088 0 0 3 0x14200 pgdaemon pagedaemon 26760 439083 0 0 3 0x14200 bored crynlk 73195 329250 0 0 3 0x14200 bored crypto 6695 19408 0 0 3 0x40014200 acpi0 acpi0 97309 417567 0 0 3 0x40014200 idle1 41172 181346 0 0 3 0x14200 bored softnet 46164 430929 0 0 3 0x14200 bored systqmp 11853 67718 0 0 3 0x14200 bored systq 54439 32567 0 0 3 0x40014200 bored softclock 50739 358424 0 0 3 0x40014200 idle0 1 307507 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 90827 (syz-executor.1) thread 0xffff800021afd9e8 (253678) exclusive rwlock netlock r = 0 (0xffffffff827400d8) #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 (0xffffffff828f5de0) #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 9548 6450K 6809K 78643K 11952 0 pcb 13 8K 8K 78643K 192 0 rtable 105 4K 8K 78643K 3285 0 ifaddr 104 20K 22K 78643K 744 0 counters 43 33K 34K 78643K 91 0 ioctlops 0 0K 8K 78643K 3903 0 iov 0 0K 16K 78643K 146 0 mount 1 1K 1K 78643K 1 0 vnodes 1216 76K 77K 78643K 1667 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 13 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 198 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 1984 0 sigio 0 0K 0K 78643K 4 0 proc 61 63K 95K 78643K 579 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 71 0 in_multi 97 4K 4K 78643K 273 0 ether_multi 1 0K 0K 78643K 19 0 mrt 0 0K 0K 78643K 12 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 307 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 154 89K 105K 78643K 6683 0 UVM aobj 65 6K 6K 78643K 71 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 191 0 NDP 15 0K 0K 78643K 66 0 temp 149 3879K 3947K 78643K 25923 0 kqueue 3 4K 18K 78643K 49 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 10 0 4 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 56 0 54 1 0 1 1 0 8 0 rtentry 112 125 0 85 2 0 2 2 0 8 0 unpcb 120 403 0 392 1 0 1 1 0 8 0 syncache 264 8 0 8 3 2 1 1 0 8 1 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 83 0 83 1 1 0 1 0 8 0 tcpcb 544 1559 0 1554 1 0 1 1 0 8 0 inpcb 296 3498 0 3488 6 4 2 2 0 8 1 rttmr 72 4 0 4 3 2 1 1 0 8 1 ip6q 72 1 0 1 1 1 0 1 0 8 0 ip6af 40 3 0 3 1 1 0 1 0 8 0 nd6 48 44 0 40 1 0 1 1 0 8 0 pkpcb 40 8 0 8 2 1 1 1 0 8 1 ppxss 1128 1 0 1 1 0 1 1 0 8 1 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pffrag 232 13 0 13 2 2 0 1 0 482 0 pffrnode 88 13 0 13 2 2 0 1 0 8 0 pffrent 40 243 0 243 2 2 0 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 1388 0 1386 3 2 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfqueue 264 2 0 2 1 1 0 1 0 8 0 pfstitem 24 25 0 23 1 0 1 1 0 8 0 pfstkey 112 25 0 23 1 0 1 1 0 8 0 pfstate 328 24 0 22 2 1 1 2 0 8 0 pfrule 1360 1061 0 1007 6 1 5 5 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 528 0 337 20 5 15 19 0 8 1 art_table 32 530 0 337 3 0 3 3 0 8 0 art_node 16 123 0 86 1 0 1 1 0 8 0 sysvmsgpl 40 46 0 30 2 1 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 190 0 180 1 0 1 1 0 8 0 shmpl 112 68 0 6 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 4050 0 2640 90 1 89 89 0 8 0 ffsino 272 4050 0 2640 95 0 95 95 0 8 0 nchpl 144 6841 0 5242 60 0 60 60 0 8 0 uvmvnodes 72 4408 0 0 81 0 81 81 0 8 0 vnodes 208 4408 0 0 232 0 232 232 0 8 0 namei 1024 20567 0 20567 3 2 1 1 0 8 1 percpumem 16 56 0 24 1 0 1 1 0 8 0 vcpupl 1984 10 0 0 2 0 2 2 0 8 0 vmpool 560 14 0 4 2 1 1 1 0 8 0 pfiaddrpl 120 992 0 976 3 2 1 1 0 8 0 scsiplug 64 1 0 1 1 0 1 1 0 8 1 scxspl 192 21367 0 21367 10 9 1 7 0 8 1 plimitpl 152 93 0 85 1 0 1 1 0 8 0 sigapl 424 2219 0 2166 7 0 7 7 0 8 0 futexpl 56 29281 0 29281 3 2 1 1 0 8 1 knotepl 112 122 0 103 1 0 1 1 0 8 0 kqueuepl 144 154 0 151 1 0 1 1 0 8 0 pipepl 304 196 0 186 4 2 2 2 0 8 1 fdescpl 496 2182 0 2166 3 0 3 3 0 8 0 filepl 152 13353 0 13249 5 0 5 5 0 8 1 lockfpl 104 176 0 175 1 0 1 1 0 8 0 lockfspl 48 66 0 65 1 0 1 1 0 8 0 sessionpl 112 20 0 9 1 0 1 1 0 8 0 pgrppl 48 30 0 19 1 0 1 1 0 8 0 ucredpl 96 814 0 804 1 0 1 1 0 8 0 zombiepl 144 2166 0 2165 1 0 1 1 0 8 0 processpl 992 2219 0 2165 7 0 7 7 0 8 0 procpl 624 5810 0 5746 6 0 6 6 0 8 0 srpgc 64 2 0 2 1 0 1 1 0 8 1 sosppl 128 13 0 13 3 3 0 1 0 8 0 sockpl 400 3972 0 3949 6 2 4 4 0 8 1 mcl64k 65536 10 0 0 2 0 2 2 0 8 0 mcl16k 16384 5 0 0 1 0 1 1 0 8 0 mcl12k 12288 11 0 0 2 0 2 2 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 14 0 0 2 0 2 2 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 185 0 0 22 1 21 22 0 8 0 mtagpl 96 94 0 0 3 0 3 3 0 8 0 mbufpl 256 800 0 0 46 0 46 46 0 8 0 bufpl 280 7426 0 1191 446 0 446 446 0 8 0 anonpl 16 199796 0 182163 106 32 74 86 0 124 0 amapchunkpl 152 11593 0 11433 45 30 15 21 0 158 8 amappl16 192 10125 0 9178 72 20 52 59 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 30 0 26 1 0 1 1 0 8 0 amappl13 168 882 0 877 1 0 1 1 0 8 0 amappl12 160 857 0 854 1 0 1 1 0 8 0 amappl11 152 176 0 161 1 0 1 1 0 8 0 amappl10 144 18 0 13 1 0 1 1 0 8 0 amappl9 136 1359 0 1356 1 0 1 1 0 8 0 amappl8 128 1361 0 1321 2 0 2 2 0 8 0 amappl7 120 126 0 113 1 0 1 1 0 8 0 amappl6 112 141 0 137 1 0 1 1 0 8 0 amappl5 104 2092 0 2074 1 0 1 1 0 8 0 amappl4 96 523 0 491 1 0 1 1 0 8 0 amappl3 88 141 0 136 1 0 1 1 0 8 0 amappl2 80 17334 0 17261 2 0 2 2 0 8 0 amappl1 72 55471 0 55026 23 13 10 18 0 8 0 amappl 80 6080 0 6028 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 70 0 6 2 0 2 2 0 8 0 uaddrrnd 24 2196 0 2170 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2196 0 2170 1 0 1 1 0 8 0 vmmpekpl 168 18969 0 18925 3 0 3 3 0 8 0 vmmpepl 168 272086 0 269906 151 50 101 123 0 357 0 vmsppl 368 2195 0 2170 3 0 3 3 0 8 0 pdppl 4096 4399 0 4350 7 0 7 7 0 8 0 pvpl 32 553157 0 532741 235 55 180 199 0 265 14 pmappl 232 2195 0 2170 4 2 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 320 0 14 9 0 9 9 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace ifa_update_broadaddr(ffff800000b0d800,ffff800000b3b500,ffff800021fd5380) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff800021fd5370,ffff800000b0d800,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd806c8f61a0,80206913,ffff800021fd5370,ffff800021afd9e8) at ifioctl+0xe70 sys/net/if.c:2282 soo_ioctl(fffffd806ca54140,80206913,ffff800021fd5370,ffff800021afd9e8) at soo_ioctl+0x27c sys/kern/sys_socket.c:138 sys_ioctl(ffff800021afd9e8,ffff800021fd5488,ffff800021fd54d0) at sys_ioctl+0x4a5 syscall(ffff800021fd5550) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021fd5550) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9342a2dabb0, 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+0xb kd_curproc sys/dev/kcov.c:75 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0xb sys/dev/kcov.c:79 userret(ffff800021afd778) at userret+0x360 sys/kern/kern_sig.c:1898 syscall(ffff800021fcfa70) at syscall+0x55f mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff800021fcfa70) at syscall+0x55f sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbc8e0, count: -7