------------[ cut here ]------------
WARNING: CPU: 0 PID: 5063 at fs/nilfs2/dat.c:200 nilfs_dat_commit_end+0x5ac/0x6b0 fs/nilfs2/dat.c:200
Modules linked in:
CPU: 0 PID: 5063 Comm: syz.0.276 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:nilfs_dat_commit_end+0x5ac/0x6b0 fs/nilfs2/dat.c:200
Code: 8b 34 24 48 83 c4 28 5b 41 5c 41 5d 41 5e 41 5f 5d e9 b8 54 03 00 e8 73 5a 6a fe e8 7e b6 f1 fd e9 b8 fc ff ff e8 64 5a 6a fe <0f> 0b e9 16 fc ff ff e8 58 5a 6a fe e8 63 b6 f1 fd e9 74 fe ff ff
RSP: 0018:ffffc90005b77270 EFLAGS: 00010287
RAX: ffffffff830ec6ac RBX: ffff8880619021a0 RCX: 0000000000080000
RDX: ffffc90003da3000 RSI: 000000000002adcb RDI: 000000000002adcc
RBP: 0000000000000003 R08: ffff8880624a98d3 R09: 1ffff1100c49531a
R10: dffffc0000000000 R11: ffffed100c49531b R12: ffff88801dc61788
R13: ffff88805e716980 R14: 0000000009000002 R15: ffff888025c27130
FS:  00007f3c144d36c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3c162c6f00 CR3: 0000000077b92000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 nilfs_bmap_commit_end_ptr fs/nilfs2/bmap.h:219 [inline]
 nilfs_btree_commit_delete fs/nilfs2/btree.c:1577 [inline]
 nilfs_btree_delete+0xa61/0x10a0 fs/nilfs2/btree.c:1608
 nilfs_bmap_do_delete fs/nilfs2/bmap.c:184 [inline]
 nilfs_bmap_do_truncate fs/nilfs2/bmap.c:272 [inline]
 nilfs_bmap_truncate+0x2e6/0x560 fs/nilfs2/bmap.c:305
 nilfs_truncate_bmap+0x1ad/0x320 fs/nilfs2/inode.c:863
 nilfs_truncate+0x271/0x4e0 fs/nilfs2/inode.c:893
 nilfs_setattr+0x20d/0x2c0 fs/nilfs2/inode.c:1007
 notify_change+0xbcd/0xee0 fs/attr.c:505
 do_truncate+0x1ac/0x240 fs/open.c:65
 handle_truncate fs/namei.c:3273 [inline]
 do_open fs/namei.c:3620 [inline]
 path_openat+0x2922/0x2fa0 fs/namei.c:3750
 do_filp_open+0x1e2/0x410 fs/namei.c:3777
 do_sys_openat2+0x150/0x4b0 fs/open.c:1255
 do_sys_open fs/open.c:1271 [inline]
 __do_sys_openat fs/open.c:1287 [inline]
 __se_sys_openat fs/open.c:1282 [inline]
 __x64_sys_openat+0x135/0x160 fs/open.c:1282
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f3c16279819
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f3c144d3028 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f3c164f2fa0 RCX: 00007f3c16279819
RDX: 000000000010b202 RSI: 0000200000000040 RDI: ffffffffffffff9c
RBP: 00007f3c1630fc91 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000000001b0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3c164f3038 R14: 00007f3c164f2fa0 R15: 00007fffc4b21038
 </TASK>