NILFS (loop3): nilfs_get_block (ino=18): a race condition while inserting a data block at offset=0
------------[ cut here ]------------
kernel BUG at fs/buffer.c:2765!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 14907 Comm: syz-executor.3 Tainted: G    B              6.8.0-rc5-syzkaller-g9abbc24128bc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : submit_bh_wbc+0x430/0x49c fs/buffer.c:2765
lr : submit_bh_wbc+0x430/0x49c fs/buffer.c:2765
sp : ffff8000aa727450
x29: ffff8000aa727460 x28: 00000000000001dd x27: dfff800000000000
x26: 0000000000000000 x25: fffffdffc4e5a580 x24: 0000000000000000
x23: ffff0001286119b0 x22: 0000000000000004 x21: 0000000000000000
x20: ffff0001286119b0 x19: 1fffe000250c2336 x18: 1fffe00036804796
x17: ffff80008ec8d000 x16: ffff80008ad5ac80 x15: 0000000000000001
x14: 1fffe000250c2342 x13: 0000000000000000 x12: 0000000000000000
x11: ffff6000250c2343 x10: 0000000000ff0100 x9 : 0000000000000000
x8 : ffff00012be85a00 x7 : 1fffe00036804797
 x6 : ffff800082f9d638
x5 : 0000000000000000 x4 : 0000000000000002
 x3 : ffff800080bdd50c
x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000

Call trace:
 submit_bh_wbc+0x430/0x49c fs/buffer.c:2765
 submit_bh fs/buffer.c:2805 [inline]
 __bh_read fs/buffer.c:3070 [inline]
 bh_read_nowait include/linux/buffer_head.h:417 [inline]
 __block_write_begin_int+0xa40/0x16a0 fs/buffer.c:2132
 __block_write_begin fs/buffer.c:2152 [inline]
 block_write_begin+0x98/0x11c fs/buffer.c:2211
 nilfs_write_begin+0xa8/0x114 fs/nilfs2/inode.c:262
 generic_perform_write+0x28c/0x588 mm/filemap.c:3930
 __generic_file_write_iter+0x184/0x204 mm/filemap.c:4022
 generic_file_write_iter+0xb8/0x2b4 mm/filemap.c:4051
 do_iter_readv_writev+0x38c/0x540
 vfs_writev+0x410/0xb58 fs/read_write.c:971
 do_writev+0x178/0x304 fs/read_write.c:1018
 __do_sys_writev fs/read_write.c:1091 [inline]
 __se_sys_writev fs/read_write.c:1088 [inline]
 __arm64_sys_writev+0x80/0x94 fs/read_write.c:1088
 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598
Code: 17ffffaf 97e53207 d4210000 97e53205 (d4210000) 
---[ end trace 0000000000000000 ]---