==================================================================
BUG: KASAN: slab-out-of-bounds in squashfs_get_id+0xb9/0x1c0 fs/squashfs/id.c:38
Read of size 8 at addr ffff888141477728 by task syz-executor.5/19670

CPU: 0 PID: 19670 Comm: syz-executor.5 Not tainted 5.11.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x137/0x1be lib/dump_stack.c:120
 print_address_description+0x5f/0x3a0 mm/kasan/report.c:230
 __kasan_report mm/kasan/report.c:396 [inline]
 kasan_report+0x15e/0x200 mm/kasan/report.c:413
 squashfs_get_id+0xb9/0x1c0 fs/squashfs/id.c:38
 squashfs_new_inode fs/squashfs/inode.c:55 [inline]
 squashfs_read_inode+0x1ea/0x2690 fs/squashfs/inode.c:120
 squashfs_fill_super+0x1668/0x1c60 fs/squashfs/super.c:310
 get_tree_bdev+0x406/0x630 fs/super.c:1291
 vfs_get_tree+0x86/0x270 fs/super.c:1496
 do_new_mount fs/namespace.c:2881 [inline]
 path_mount+0x17ad/0x2a00 fs/namespace.c:3211
 do_mount fs/namespace.c:3224 [inline]
 __do_sys_mount fs/namespace.c:3432 [inline]
 __se_sys_mount+0x28c/0x320 fs/namespace.c:3409
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x460c6a
Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ad 89 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 8a 89 fb ff c3 66 0f 1f 84 00 00 00 00 00
RSP: 002b:00007ff450c2ea78 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ff450c2eb10 RCX: 0000000000460c6a
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ff450c2ead0
RBP: 00007ff450c2ead0 R08: 00007ff450c2eb10 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000
R13: 0000000020000100 R14: 0000000020000200 R15: 0000000020010200

Allocated by task 19670:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:401 [inline]
 ____kasan_kmalloc+0xbd/0xf0 mm/kasan/common.c:429
 kasan_kmalloc include/linux/kasan.h:219 [inline]
 __kmalloc+0xaf/0x330 mm/slub.c:3971
 kmalloc include/linux/slab.h:557 [inline]
 squashfs_read_table+0x2c/0x3b0 fs/squashfs/cache.c:413
 squashfs_read_id_index_table+0x7c/0x100 fs/squashfs/id.c:77
 squashfs_fill_super+0x1181/0x1c60 fs/squashfs/super.c:238
 get_tree_bdev+0x406/0x630 fs/super.c:1291
 vfs_get_tree+0x86/0x270 fs/super.c:1496
 do_new_mount fs/namespace.c:2881 [inline]
 path_mount+0x17ad/0x2a00 fs/namespace.c:3211
 do_mount fs/namespace.c:3224 [inline]
 __do_sys_mount fs/namespace.c:3432 [inline]
 __se_sys_mount+0x28c/0x320 fs/namespace.c:3409
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

The buggy address belongs to the object at ffff888141477708
 which belongs to the cache kmalloc-8 of size 8
The buggy address is located 24 bytes to the right of
 8-byte region [ffff888141477708, ffff888141477710)
The buggy address belongs to the page:
page:000000009243cc05 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888141477618 pfn:0x141477
flags: 0x57ff00000000200(slab)
raw: 057ff00000000200 ffffea0000b35440 0000001900000019 ffff888010441c80
raw: ffff888141477618 000000008066005e 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff888141477600: fc fc fc fb fc fc fc fc fa fc fc fc fc fa fc fc
 ffff888141477680: fc fc 00 fc fc fc fc fa fc fc fc fc fa fc fc fc
>ffff888141477700: fc 00 fc fc fc fc fa fc fc fc fc fa fc fc fc fc
                                  ^
 ffff888141477780: fa fc fc fc fc fa fc fc fc fc fa fc fc fc fc 00
 ffff888141477800: fc fc fc fc fa fc fc fc fc fa fc fc fc fc fa fc
==================================================================