capability: warning: `syz-executor0' uses 32-bit capabilities (legacy support in use)
PF_CAN: dropped non conform CAN FD skbuf: dev type 65534, len 60, datalen 0
==================================================================
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 ffff8801d68c85d0 by task syz-executor5/6793

CPU: 1 PID: 6793 Comm: syz-executor5 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:00007ff78a9bac68 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007ff78a9bb6d4 RCX: 0000000000455389
RDX: 0000000000000064 RSI: 0000000000000084 RDI: 0000000000000014
RBP: 000000000072bea0 R08: 0000000000000010 R09: 0000000000000000
R10: 0000000020000180 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000005a3 R14: 00000000006fb7e8 R15: 0000000000000000

Allocated by task 6793:
 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_evaluate+0x97f/0x9bc drivers/acpi/acpica/nseval.c:296
 acpi_evaluate_object+0x484/0x8b7 drivers/acpi/acpica/nsxfeval.c:354
 acpi_evaluate_integer+0x121/0x260 drivers/acpi/utils.c:296
 acpi_bus_get_status_handle+0x26/0xa0 drivers/acpi/bus.c:127
 acpi_bus_type_and_status drivers/acpi/scan.c:1697 [inline]
 acpi_bus_check_add+0x393/0xb40 drivers/acpi/scan.c:1851
 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 ffff8801d68c85c0
 which belongs to the cache kmalloc-32 of size 32
The buggy address is located 16 bytes inside of
 32-byte region [ffff8801d68c85c0, ffff8801d68c85e0)
The buggy address belongs to the page:
page:ffffea00075a3200 count:1 mapcount:0 mapping:ffff8801d68c8000 index:0xffff8801d68c8fc1
flags: 0x2fffc0000000100(slab)
raw: 02fffc0000000100 ffff8801d68c8000 ffff8801d68c8fc1 0000000100000029
raw: ffffea00075a3360 ffff8801da801238 ffff8801da8001c0 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8801d68c8480: fb fb fb fb fc fc fc fc 00 00 fc fc fc fc fc fc
 ffff8801d68c8500: 00 00 fc fc fc fc fc fc 00 00 fc fc fc fc fc fc
>ffff8801d68c8580: fb fb fb fb fc fc fc fc 00 00 fc fc fc fc fc fc
                                                 ^
 ffff8801d68c8600: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc
 ffff8801d68c8680: 00 00 fc fc fc fc fc fc 00 00 fc fc fc fc fc fc
==================================================================