attempt to access beyond end of device
loop2: rw=2049, want=57352, limit=40427
attempt to access beyond end of device
loop2: rw=2049, want=57360, limit=40427
==================================================================
BUG: KASAN: slab-out-of-bounds in __roll_back_blkaddrs fs/f2fs/file.c:1001 [inline]
BUG: KASAN: slab-out-of-bounds in __exchange_data_block+0x2dbc/0x30a0 fs/f2fs/file.c:1137
Read of size 4 at addr ffff88803bca5060 by task syz-executor.2/10851

CPU: 0 PID: 10851 Comm: syz-executor.2 Not tainted 4.14.307-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
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:251
 kasan_report_error.cold+0x8a/0x191 mm/kasan/report.c:350
 kasan_report mm/kasan/report.c:408 [inline]
 __asan_report_load4_noabort+0x68/0x70 mm/kasan/report.c:428
 __roll_back_blkaddrs fs/f2fs/file.c:1001 [inline]
 __exchange_data_block+0x2dbc/0x30a0 fs/f2fs/file.c:1137
 f2fs_move_file_range fs/f2fs/file.c:2330 [inline]
 f2fs_ioc_move_range fs/f2fs/file.c:2376 [inline]
 f2fs_ioctl+0x52b3/0x6b70 fs/f2fs/file.c:2698
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:500 [inline]
 do_vfs_ioctl+0x75a/0xff0 fs/ioctl.c:684
 SYSC_ioctl fs/ioctl.c:701 [inline]
 SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x5e/0xd3
RIP: 0033:0x7f67cae4c0f9
RSP: 002b:00007f67c235b168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f67caf6c050 RCX: 00007f67cae4c0f9
RDX: 0000000020000100 RSI: 00000000c020f509 RDI: 0000000000000004
RBP: 00007f67caea7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd9cfdb1ff R14: 00007f67c235b300 R15: 0000000000022000

Allocated by task 10851:
 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
 __do_kmalloc_node mm/slab.c:3682 [inline]
 __kmalloc_node+0x4c/0x70 mm/slab.c:3689
 kmalloc_node include/linux/slab.h:530 [inline]
 kvmalloc_node+0x84/0xc0 mm/util.c:432
 kvmalloc include/linux/mm.h:531 [inline]
 kvzalloc include/linux/mm.h:539 [inline]
 __exchange_data_block+0x132/0x30a0 fs/f2fs/file.c:1111
 f2fs_move_file_range fs/f2fs/file.c:2330 [inline]
 f2fs_ioc_move_range fs/f2fs/file.c:2376 [inline]
 f2fs_ioctl+0x52b3/0x6b70 fs/f2fs/file.c:2698
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:500 [inline]
 do_vfs_ioctl+0x75a/0xff0 fs/ioctl.c:684
 SYSC_ioctl fs/ioctl.c:701 [inline]
 SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x5e/0xd3

Freed by task 0:
(stack is not available)

The buggy address belongs to the object at ffff88803bca10c0
 which belongs to the cache kmalloc-16384 of size 16384
The buggy address is located 16288 bytes inside of
 16384-byte region [ffff88803bca10c0, ffff88803bca50c0)
The buggy address belongs to the page:
page:ffffea0000ef2800 count:1 mapcount:0 mapping:ffff88803bca10c0 index:0x0 compound_mapcount: 0
flags: 0xfff00000008100(slab|head)
raw: 00fff00000008100 ffff88803bca10c0 0000000000000000 0000000100000001
raw: ffffea0000f5a020 ffff88813fe64c48 ffff88813fe65200 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff88803bca4f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88803bca4f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88803bca5000: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc
                                                       ^
 ffff88803bca5080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88803bca5100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================