================================================================== BUG: KASAN: slab-out-of-bounds in memcpy include/linux/string.h:345 [inline] BUG: KASAN: slab-out-of-bounds in pfkey_msg2xfrm_state net/key/af_key.c:1181 [inline] BUG: KASAN: slab-out-of-bounds in pfkey_add+0x272d/0x3210 net/key/af_key.c:1499 Read of size 6529 at addr ffff8801b7188d00 by task syz-executor6/10933 CPU: 1 PID: 10933 Comm: syz-executor6 Not tainted 4.17.0-rc3+ #33 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1b9/0x294 lib/dump_stack.c:113 kernel msg: ebtables bug: please report to author: EBT_ENTRY_OR_ENTRIES shouldn't be set in distinguisher print_address_description+0x6c/0x20b mm/kasan/report.c:256 kasan_report_error mm/kasan/report.c:354 [inline] kasan_report.cold.7+0x242/0x2fe mm/kasan/report.c:412 check_memory_region_inline mm/kasan/kasan.c:260 [inline] check_memory_region+0x13e/0x1b0 mm/kasan/kasan.c:267 memcpy+0x23/0x50 mm/kasan/kasan.c:302 memcpy include/linux/string.h:345 [inline] pfkey_msg2xfrm_state net/key/af_key.c:1181 [inline] pfkey_add+0x272d/0x3210 net/key/af_key.c:1499 pfkey_process+0x7cc/0x8a0 net/key/af_key.c:2819 kernel msg: ebtables bug: please report to author: EBT_ENTRY_OR_ENTRIES shouldn't be set in distinguisher pfkey_sendmsg+0x5f4/0x1050 net/key/af_key.c:3658 sock_sendmsg_nosec net/socket.c:629 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:639 ___sys_sendmsg+0x805/0x940 net/socket.c:2117 __sys_sendmsg+0x115/0x270 net/socket.c:2155 __do_sys_sendmsg net/socket.c:2164 [inline] __se_sys_sendmsg net/socket.c:2162 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2162 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x455979 RSP: 002b:00007fc356bcdc68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fc356bce6d4 RCX: 0000000000455979 RDX: 0000000000000000 RSI: 0000000020196fe4 RDI: 0000000000000013 RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000538 R14: 00000000006fbde0 R15: 0000000000000000 Allocated by task 10933: save_stack+0x43/0xd0 mm/kasan/kasan.c:448 set_track mm/kasan/kasan.c:460 [inline] kasan_kmalloc+0xc4/0xe0 mm/kasan/kasan.c:553 __do_kmalloc_node mm/slab.c:3682 [inline] __kmalloc_node_track_caller+0x47/0x70 mm/slab.c:3696 __kmalloc_reserve.isra.38+0x3a/0xe0 net/core/skbuff.c:137 __alloc_skb+0x14d/0x780 net/core/skbuff.c:205 alloc_skb include/linux/skbuff.h:989 [inline] pfkey_sendmsg+0x250/0x1050 net/key/af_key.c:3645 sock_sendmsg_nosec net/socket.c:629 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:639 ___sys_sendmsg+0x805/0x940 net/socket.c:2117 __sys_sendmsg+0x115/0x270 net/socket.c:2155 __do_sys_sendmsg net/socket.c:2164 [inline] __se_sys_sendmsg net/socket.c:2162 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2162 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe Freed by task 9327: save_stack+0x43/0xd0 mm/kasan/kasan.c:448 set_track mm/kasan/kasan.c:460 [inline] __kasan_slab_free+0x11a/0x170 mm/kasan/kasan.c:521 kasan_slab_free+0xe/0x10 mm/kasan/kasan.c:528 __cache_free mm/slab.c:3498 [inline] kfree+0xd9/0x260 mm/slab.c:3813 load_elf_binary+0x255d/0x5610 fs/binfmt_elf.c:1117 search_binary_handler+0x17d/0x570 fs/exec.c:1653 exec_binprm fs/exec.c:1695 [inline] do_execveat_common.isra.34+0x16ce/0x2590 fs/exec.c:1817 do_execve fs/exec.c:1862 [inline] __do_sys_execve fs/exec.c:1943 [inline] __se_sys_execve fs/exec.c:1938 [inline] __x64_sys_execve+0x8d/0xb0 fs/exec.c:1938 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe The buggy address belongs to the object at ffff8801b7188cc0 which belongs to the cache kmalloc-512 of size 512 The buggy address is located 64 bytes inside of 512-byte region [ffff8801b7188cc0, ffff8801b7188ec0) The buggy address belongs to the page: page:ffffea0006dc6200 count:1 mapcount:0 mapping:ffff8801b7188040 index:0xffff8801b7188040 flags: 0x2fffc0000000100(slab) raw: 02fffc0000000100 ffff8801b7188040 ffff8801b7188040 0000000100000005 raw: ffffea0006e103a0 ffffea0006e98fa0 ffff8801da800940 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8801b7188d80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8801b7188e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff8801b7188e80: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc ^ ffff8801b7188f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8801b7188f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================