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BUG: KASAN: slab-out-of-bounds in squashfs_get_id+0x1ae/0x1d0 fs/squashfs/id.c:38
Read of size 8 at addr ffff888011472e78 by task syz-executor.4/23375

CPU: 0 PID: 23375 Comm: syz-executor.4 Not tainted 5.10.0-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+0x107/0x163 lib/dump_stack.c:120
 print_address_description.constprop.0.cold+0xae/0x497 mm/kasan/report.c:385
 __kasan_report mm/kasan/report.c:545 [inline]
 kasan_report.cold+0x1f/0x37 mm/kasan/report.c:562
 squashfs_get_id+0x1ae/0x1d0 fs/squashfs/id.c:38
 squashfs_new_inode fs/squashfs/inode.c:55 [inline]
 squashfs_read_inode+0x1ee/0x1b40 fs/squashfs/inode.c:120
 squashfs_fill_super+0x1140/0x23b0 fs/squashfs/super.c:310
 get_tree_bdev+0x421/0x740 fs/super.c:1344
 vfs_get_tree+0x89/0x2f0 fs/super.c:1549
 do_new_mount fs/namespace.c:2875 [inline]
 path_mount+0x13ad/0x20c0 fs/namespace.c:3205
 do_mount fs/namespace.c:3218 [inline]
 __do_sys_mount fs/namespace.c:3426 [inline]
 __se_sys_mount fs/namespace.c:3403 [inline]
 __x64_sys_mount+0x27f/0x300 fs/namespace.c:3403
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x460baa
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:00007f262540da78 EFLAGS: 00000212 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f262540db10 RCX: 0000000000460baa
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f262540dad0
RBP: 00007f262540dad0 R08: 00007f262540db10 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000212 R12: 0000000020000000
R13: 0000000020000100 R14: 0000000020000200 R15: 0000000020010200

Allocated by task 1:
 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48
 kasan_set_track mm/kasan/common.c:56 [inline]
 __kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:461
 __do_kmalloc mm/slab.c:3657 [inline]
 __kmalloc_track_caller+0x223/0x450 mm/slab.c:3672
 kstrdup+0x36/0x70 mm/util.c:60
 kstrdup_const+0x53/0x80 mm/util.c:83
 __kernfs_new_node+0x9d/0x8b0 fs/kernfs/dir.c:623
 kernfs_new_node fs/kernfs/dir.c:689 [inline]
 kernfs_create_dir_ns+0x9c/0x220 fs/kernfs/dir.c:1026
 sysfs_create_dir_ns+0x127/0x290 fs/sysfs/dir.c:59
 create_dir lib/kobject.c:89 [inline]
 kobject_add_internal+0x2d2/0xa60 lib/kobject.c:255
 kobject_add_varg lib/kobject.c:390 [inline]
 kobject_init_and_add+0x101/0x160 lib/kobject.c:473
 locate_module_kobject+0xeb/0x164 kernel/params.c:758
 kernel_add_sysfs_param kernel/params.c:785 [inline]
 param_sysfs_builtin kernel/params.c:833 [inline]
 param_sysfs_init+0x2d1/0x483 kernel/params.c:954
 do_one_initcall+0x103/0x650 init/main.c:1217
 do_initcall_level init/main.c:1290 [inline]
 do_initcalls init/main.c:1306 [inline]
 do_basic_setup init/main.c:1326 [inline]
 kernel_init_freeable+0x600/0x684 init/main.c:1526
 kernel_init+0xd/0x1b8 init/main.c:1415
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296

The buggy address belongs to the object at ffff888011472e40
 which belongs to the cache kmalloc-32 of size 32
The buggy address is located 24 bytes to the right of
 32-byte region [ffff888011472e40, ffff888011472e60)
The buggy address belongs to the page:
page:00000000ad1e3008 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888011472fc1 pfn:0x11472
flags: 0xfff00000000200(slab)
raw: 00fff00000000200 ffffea00004b0948 ffffea000089ac88 ffff888010040100
raw: ffff888011472fc1 ffff888011472000 0000000100000037 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff888011472d00: 00 03 fc fc fc fc fc fc 00 00 01 fc fc fc fc fc
 ffff888011472d80: 00 fc fc fc fc fc fc fc 00 04 fc fc fc fc fc fc
>ffff888011472e00: 00 00 fc fc fc fc fc fc 04 fc fc fc fc fc fc fc
                                                                ^
 ffff888011472e80: fa fb fb fb fc fc fc fc 00 00 01 fc fc fc fc fc
 ffff888011472f00: fa fb fb fb fc fc fc fc 00 00 01 fc fc fc fc fc
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