------------[ cut here ]------------
WARNING: CPU: 0 PID: 7871 at fs/buffer.c:1177 mark_buffer_dirty+0x2e5/0x520 fs/buffer.c:1177
Modules linked in:
CPU: 0 UID: 0 PID: 7871 Comm: syz.6.264 Not tainted 6.12.0-rc7-syzkaller-00187-gf868cd251776 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
RIP: 0010:mark_buffer_dirty+0x2e5/0x520 fs/buffer.c:1177
Code: 89 df e8 ee 7a db ff 48 8b 3b be 20 00 00 00 5b 41 5e 41 5f 5d e9 fb e8 fb ff e8 66 c1 74 ff e9 73 ff ff ff e8 5c c1 74 ff 90 <0f> 0b 90 e9 61 fd ff ff e8 4e c1 74 ff 90 0f 0b 90 e9 88 fd ff ff
RSP: 0000:ffffc90004917240 EFLAGS: 00010246
RAX: ffffffff82202854 RBX: ffff88805c056001 RCX: 0000000000040000
RDX: ffffc90004bb1000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: 0000000000000000 R08: ffffffff822025b1 R09: 1ffff1100ad15491
R10: dffffc0000000000 R11: ffffed100ad15492 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff8880568aa488 R15: ffff8880346a6938
FS:  00007f8ac97ab6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f178c994000 CR3: 00000000338a6000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 nilfs_palloc_commit_alloc_entry+0x4b/0x160 fs/nilfs2/alloc.c:598
 nilfs_dat_commit_alloc+0x11a/0x1e0 fs/nilfs2/dat.c:102
 nilfs_bmap_commit_alloc_ptr fs/nilfs2/bmap.h:206 [inline]
 nilfs_btree_commit_insert fs/nilfs2/btree.c:1226 [inline]
 nilfs_btree_insert+0x1582/0x1c10 fs/nilfs2/btree.c:1256
 nilfs_bmap_do_insert fs/nilfs2/bmap.c:129 [inline]
 nilfs_bmap_insert+0x25e/0x3c0 fs/nilfs2/bmap.c:155
 nilfs_get_block+0x428/0x8e0 fs/nilfs2/inode.c:98
 __block_write_begin_int+0x50c/0x1a70 fs/buffer.c:2121
 block_write_begin+0x8f/0x120 fs/buffer.c:2231
 nilfs_write_begin+0xa0/0x110 fs/nilfs2/inode.c:259
 generic_perform_write+0x344/0x6d0 mm/filemap.c:4054
 __generic_file_write_iter+0x1b5/0x230 mm/filemap.c:4152
 generic_file_write_iter+0xae/0x310 mm/filemap.c:4181
 do_iter_readv_writev+0x600/0x880
 vfs_writev+0x376/0xba0 fs/read_write.c:1064
 do_pwritev fs/read_write.c:1165 [inline]
 __do_sys_pwritev2 fs/read_write.c:1224 [inline]
 __se_sys_pwritev2+0x1ca/0x2d0 fs/read_write.c:1215
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8ac897e719
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8ac97ab038 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffda RBX: 00007f8ac8b35f80 RCX: 00007f8ac897e719
RDX: 0000000000000001 RSI: 0000000020000240 RDI: 0000000000000004
RBP: 00007f8ac89f175e R08: 0000000000000000 R09: 0000000000000003
R10: 0000000000033000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f8ac8b35f80 R15: 00007ffe5fce4128
 </TASK>