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BUG: KASAN: use-after-free in hfsplus_releasepage+0x457/0x4e0 fs/hfsplus/inode.c:92
Read of size 4 at addr ffff88803e630cf8 by task syz-executor.4/8018

CPU: 0 PID: 8018 Comm: syz-executor.4 Not tainted 4.14.301-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x281 lib/dump_stack.c:58
 print_address_description.cold+0x54/0x1d3 mm/kasan/report.c:252
 kasan_report_error.cold+0x8a/0x191 mm/kasan/report.c:351
 kasan_report mm/kasan/report.c:409 [inline]
 __asan_report_load4_noabort+0x68/0x70 mm/kasan/report.c:429
 hfsplus_releasepage+0x457/0x4e0 fs/hfsplus/inode.c:92
 try_to_release_page+0x143/0x1e0 mm/filemap.c:3243
 block_invalidatepage+0x258/0x2f0 fs/buffer.c:1573
 do_invalidatepage mm/truncate.c:124 [inline]
 truncate_complete_page mm/truncate.c:144 [inline]
 truncate_inode_page+0x212/0x2f0 mm/truncate.c:192
 truncate_inode_pages_range+0x1e0/0x13e0 mm/truncate.c:316
 hfsplus_evict_inode+0x16/0xc0 fs/hfsplus/super.c:167
 evict+0x2c8/0x700 fs/inode.c:554
 iput_final fs/inode.c:1523 [inline]
 iput+0x458/0x7e0 fs/inode.c:1550
 hfsplus_put_super+0x258/0x3d0 fs/hfsplus/super.c:301
 generic_shutdown_super+0x144/0x370 fs/super.c:446
 kill_block_super+0x95/0xe0 fs/super.c:1161
 deactivate_locked_super+0x6c/0xd0 fs/super.c:319
 deactivate_super+0x7f/0xa0 fs/super.c:350
 cleanup_mnt+0x186/0x2c0 fs/namespace.c:1183
 task_work_run+0x11f/0x190 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:191 [inline]
 exit_to_usermode_loop+0x1ad/0x200 arch/x86/entry/common.c:164
 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:270 [inline]
 do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297
 entry_SYSCALL_64_after_hwframe+0x5e/0xd3
RIP: 0033:0x7f881aaa8547
RSP: 002b:00007ffdd0cbc798 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f881aaa8547
EXT4-fs (loop0): unsupported inode size: 32768
RDX: 00007ffdd0cbc869 RSI: 000000000000000a RDI: 00007ffdd0cbc860
RBP: 00007ffdd0cbc860 R08: 00000000ffffffff R09: 00007ffdd0cbc630
R10: 0000555555773903 R11: 0000000000000246 R12: 00007f881ab01b24
R13: 00007ffdd0cbd920 R14: 0000555555773810 R15: 00007ffdd0cbd960

Allocated by task 9651:
EXT4-fs (loop0): blocksize: 4096
 save_stack mm/kasan/kasan.c:447 [inline]
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:551
 kmem_cache_alloc_trace+0x131/0x3d0 mm/slab.c:3618
 kmalloc include/linux/slab.h:488 [inline]
 kzalloc include/linux/slab.h:661 [inline]
 hfsplus_btree_open+0x4d/0xff0 fs/hfsplus/btree.c:142
 hfsplus_fill_super+0x9ce/0x1850 fs/hfsplus/super.c:473
 mount_bdev+0x2b3/0x360 fs/super.c:1134
 mount_fs+0x92/0x2a0 fs/super.c:1237
 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046
 vfs_kern_mount fs/namespace.c:1036 [inline]
 do_new_mount fs/namespace.c:2572 [inline]
 do_mount+0xe65/0x2a30 fs/namespace.c:2905
 SYSC_mount fs/namespace.c:3121 [inline]
 SyS_mount+0xa8/0x120 fs/namespace.c:3098
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x5e/0xd3

Freed by task 8018:
 save_stack mm/kasan/kasan.c:447 [inline]
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_slab_free+0xc3/0x1a0 mm/kasan/kasan.c:524
 __cache_free mm/slab.c:3496 [inline]
 kfree+0xc9/0x250 mm/slab.c:3815
 hfsplus_btree_close+0x152/0x1d0 fs/hfsplus/btree.c:279
 hfsplus_put_super+0x208/0x3d0 fs/hfsplus/super.c:299
 generic_shutdown_super+0x144/0x370 fs/super.c:446
 kill_block_super+0x95/0xe0 fs/super.c:1161
 deactivate_locked_super+0x6c/0xd0 fs/super.c:319
 deactivate_super+0x7f/0xa0 fs/super.c:350
 cleanup_mnt+0x186/0x2c0 fs/namespace.c:1183
 task_work_run+0x11f/0x190 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:191 [inline]
 exit_to_usermode_loop+0x1ad/0x200 arch/x86/entry/common.c:164
 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:270 [inline]
 do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297
 entry_SYSCALL_64_after_hwframe+0x5e/0xd3

The buggy address belongs to the object at ffff88803e630cc0
 which belongs to the cache kmalloc-4096 of size 4096
The buggy address is located 56 bytes inside of
 4096-byte region [ffff88803e630cc0, ffff88803e631cc0)
The buggy address belongs to the page:
page:ffffea0000f98c00 count:1 mapcount:0 mapping:ffff88803e630cc0 index:0x0 compound_mapcount: 0
flags: 0xfff00000008100(slab|head)
raw: 00fff00000008100 ffff88803e630cc0 0000000000000000 0000000100000001
raw: ffffea0000f97fa0 ffffea0000f98d20 ffff88813fe74dc0 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff88803e630b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88803e630c00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88803e630c80: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb
                                                                ^
 ffff88803e630d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88803e630d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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