syzbot

loop0: detected capacity change from 0 to 2048
------------[ cut here ]------------
WARNING: CPU: 0 PID: 3498 at fs/nilfs2/dat.c:158 nilfs_dat_prepare_end+0x248/0x2a0
Modules linked in:
CPU: 0 PID: 3498 Comm: syz-executor248 Not tainted 5.15.143-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:nilfs_dat_prepare_end+0x248/0x2a0 fs/nilfs2/dat.c:158
Code: 5d 5b fe 89 eb 89 d8 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 47 5d 5b fe e8 62 bc db fd e9 5a ff ff ff e8 38 5d 5b fe <0f> 0b bb fe ff ff ff eb d2 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c
RSP: 0018:ffffc90002cf7678 EFLAGS: 00010293
RAX: ffffffff8324cb08 RBX: 00000000fffffffe RCX: ffff888074785940
RDX: 0000000000000000 RSI: 00000000fffffffe RDI: 00000000fffffffe
RBP: 1ffff1100f1d1b53 R08: ffffffff8324ca81 R09: ffffffff8322fbc0
R10: 0000000000000002 R11: ffff888074785940 R12: ffff888078e8da98
R13: ffff888074a00158 R14: ffff888078e8dab0 R15: dffffc0000000000
FS:  000055555581b380(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055915f1edbc0 CR3: 0000000075712000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 nilfs_bmap_prepare_end_ptr fs/nilfs2/bmap.h:211 [inline]
 nilfs_btree_prepare_delete fs/nilfs2/btree.c:1451 [inline]
 nilfs_btree_delete+0x4be/0x11b0 fs/nilfs2/btree.c:1599
 nilfs_bmap_do_delete fs/nilfs2/bmap.c:184 [inline]
 nilfs_bmap_do_truncate fs/nilfs2/bmap.c:272 [inline]
 nilfs_bmap_truncate+0x2fc/0x560 fs/nilfs2/bmap.c:305
 nilfs_truncate_bmap+0x203/0x3c0 fs/nilfs2/inode.c:850
 nilfs_truncate+0x28b/0x500 fs/nilfs2/inode.c:880
 nilfs_setattr+0x216/0x2c0 fs/nilfs2/inode.c:994
 notify_change+0xc6d/0xf50 fs/attr.c:505
 do_truncate+0x21c/0x300 fs/open.c:65
 vfs_truncate+0x2dd/0x3a0 fs/open.c:111
 do_sys_truncate+0xda/0x190 fs/open.c:134
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f2375e385f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 17 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc4734a3c8 EFLAGS: 00000246 ORIG_RAX: 000000000000004c
RAX: ffffffffffffffda RBX: 00007ffc4734a5a8 RCX: 00007f2375e385f9
RDX: 00007f2375e378f0 RSI: 0000000000000000 RDI: 00000000200000c0
RBP: 00007f2375eac610 R08: 0000000000000a58 R09: 0000000000000000
R10: 00007ffc4734a290 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffc4734a598 R14: 0000000000000001 R15: 0000000000000001
 </TASK>