------------[ cut here ]------------
WARNING: CPU: 1 PID: 6507 at fs/buffer.c:1177 mark_buffer_dirty+0x2e5/0x520 fs/buffer.c:1177
Modules linked in:
CPU: 1 UID: 0 PID: 6507 Comm: syz.4.245 Not tainted 6.12.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:mark_buffer_dirty+0x2e5/0x520 fs/buffer.c:1177
Code: 89 df e8 ae 83 db ff 48 8b 3b be 20 00 00 00 5b 41 5e 41 5f 5d e9 fb e8 fb ff e8 46 f5 74 ff e9 73 ff ff ff e8 3c f5 74 ff 90 <0f> 0b 90 e9 61 fd ff ff e8 2e f5 74 ff 90 0f 0b 90 e9 88 fd ff ff
RSP: 0018:ffffc90009497460 EFLAGS: 00010293
RAX: ffffffff821ff0e4 RBX: ffff88805dc41a01 RCX: ffff88802cd6da00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff821fee41 R09: 1ffff1100bb89179
R10: dffffc0000000000 R11: ffffed100bb8917a R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff88805dc48bc8 R15: ffff88807c10da38
FS:  00007f30cd7656c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002000f000 CR3: 00000000282de000 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+0xae/0x310 mm/filemap.c:4181
 new_sync_write fs/read_write.c:590 [inline]
 vfs_write+0xa6d/0xc90 fs/read_write.c:683
 ksys_pwrite64 fs/read_write.c:798 [inline]
 __do_sys_pwrite64 fs/read_write.c:808 [inline]
 __se_sys_pwrite64 fs/read_write.c:805 [inline]
 __x64_sys_pwrite64+0x1aa/0x230 fs/read_write.c:805
 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: 0033:0x7f30cc97dff9
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:00007f30cd765038 EFLAGS: 00000246 ORIG_RAX: 0000000000000012
RAX: ffffffffffffffda RBX: 00007f30ccb35f80 RCX: 00007f30cc97dff9
RDX: 000000000000fdef RSI: 0000000020000140 RDI: 0000000000000004
RBP: 00007f30cc9f0296 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000fecc R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f30ccb35f80 R15: 00007ffe32350198
 </TASK>