netlink: 'syz-executor4': attribute type 1 has an invalid length. IPVS: set_ctl: invalid protocol: 0 0.0.0.0:20003 wlc ================================================================== IPVS: set_ctl: invalid protocol: 0 0.0.0.0:20003 wlc BUG: KASAN: slab-out-of-bounds in ipv6_addr_equal include/net/ipv6.h:507 [inline] BUG: KASAN: slab-out-of-bounds in __sctp_v6_cmp_addr+0x4c7/0x530 net/sctp/ipv6.c:580 Read of size 8 at addr ffff8801d6827810 by task syz-executor3/6761 CPU: 0 PID: 6761 Comm: syz-executor3 Not tainted 4.17.0-rc1+ #10 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 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 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:433 ipv6_addr_equal include/net/ipv6.h:507 [inline] __sctp_v6_cmp_addr+0x4c7/0x530 net/sctp/ipv6.c:580 sctp_inet6_cmp_addr+0x169/0x1a0 net/sctp/ipv6.c:898 sctp_bind_addr_match+0x20b/0x400 net/sctp/bind_addr.c:330 sctp_do_bind+0x1c0/0x5f0 net/sctp/socket.c:427 sctp_bindx_add+0x90/0x1a0 net/sctp/socket.c:529 sctp_setsockopt_bindx+0x2ad/0x320 net/sctp/socket.c:1058 sctp_setsockopt+0x12c4/0x7000 net/sctp/socket.c:4227 sock_common_setsockopt+0x9a/0xe0 net/core/sock.c:3039 __sys_setsockopt+0x1bd/0x390 net/socket.c:1903 __do_sys_setsockopt net/socket.c:1914 [inline] __se_sys_setsockopt net/socket.c:1911 [inline] __x64_sys_setsockopt+0xbe/0x150 net/socket.c:1911 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x455389 RSP: 002b:00007f4d34a03c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007f4d34a046d4 RCX: 0000000000455389 RDX: 0000000000000064 RSI: 0000000000000084 RDI: 0000000000000014 RBP: 000000000072bf58 R08: 0000000000000010 R09: 0000000000000000 R10: 0000000020000140 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000000005a3 R14: 00000000006fb7e8 R15: 0000000000000001 Allocated by task 6761: 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+0x47/0x70 mm/slab.c:3689 kmalloc_node include/linux/slab.h:554 [inline] kvmalloc_node+0x6b/0x100 mm/util.c:421 kvmalloc include/linux/mm.h:550 [inline] vmemdup_user+0x2d/0xa0 mm/util.c:186 sctp_setsockopt_bindx+0x5d/0x320 net/sctp/socket.c:1022 sctp_setsockopt+0x12c4/0x7000 net/sctp/socket.c:4227 sock_common_setsockopt+0x9a/0xe0 net/core/sock.c:3039 __sys_setsockopt+0x1bd/0x390 net/socket.c:1903 __do_sys_setsockopt net/socket.c:1914 [inline] __se_sys_setsockopt net/socket.c:1911 [inline] __x64_sys_setsockopt+0xbe/0x150 net/socket.c:1911 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe Freed by task 1: 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 acpi_os_free include/acpi/platform/aclinuxex.h:62 [inline] acpi_ns_get_node_unlocked+0x2b1/0x2ee drivers/acpi/acpica/nsutils.c:698 acpi_ns_get_node+0x4d/0x6b drivers/acpi/acpica/nsutils.c:738 acpi_get_handle+0x153/0x24b drivers/acpi/acpica/nsxfname.c:98 acpi_evaluate_object_typed+0x14f/0x3f8 drivers/acpi/acpica/nsxfeval.c:71 acpi_init_properties+0x567/0xcb0 drivers/acpi/property.c:355 acpi_init_device_object+0x9ce/0x1f70 drivers/acpi/scan.c:1574 acpi_add_single_object+0x1ca/0x1e70 drivers/acpi/scan.c:1608 acpi_bus_check_add+0x5fa/0xb40 drivers/acpi/scan.c:1860 acpi_ns_walk_namespace+0x224/0x400 drivers/acpi/acpica/nswalk.c:237 acpi_walk_namespace+0xf2/0x12c drivers/acpi/acpica/nsxfeval.c:606 acpi_bus_scan+0x138/0x160 drivers/acpi/scan.c:2041 acpi_scan_init+0x404/0x8df drivers/acpi/scan.c:2198 acpi_init+0x936/0x9fa drivers/acpi/bus.c:1284 do_one_initcall+0x127/0x913 init/main.c:883 do_initcall_level init/main.c:951 [inline] do_initcalls init/main.c:959 [inline] do_basic_setup init/main.c:977 [inline] kernel_init_freeable+0x49b/0x58e init/main.c:1127 kernel_init+0x11/0x1b3 init/main.c:1053 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:412 The buggy address belongs to the object at ffff8801d6827800 which belongs to the cache kmalloc-32 of size 32 The buggy address is located 16 bytes inside of 32-byte region [ffff8801d6827800, ffff8801d6827820) The buggy address belongs to the page: page:ffffea00075a09c0 count:1 mapcount:0 mapping:ffff8801d6827000 index:0xffff8801d6827fc1 flags: 0x2fffc0000000100(slab) raw: 02fffc0000000100 ffff8801d6827000 ffff8801d6827fc1 000000010000003f raw: ffffea00075a0860 ffffea00075a0ae0 ffff8801da8001c0 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8801d6827700: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc ffff8801d6827780: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc >ffff8801d6827800: 00 00 fc fc fc fc fc fc 00 00 00 fc fc fc fc fc ^ ffff8801d6827880: 00 00 04 fc fc fc fc fc 00 00 fc fc fc fc fc fc ffff8801d6827900: 00 00 00 04 fc fc fc fc fb fb fb fb fc fc fc fc ==================================================================