NILFS (loop0): nilfs_get_block (ino=15): a race condition while inserting a data block at offset=0
------------[ cut here ]------------
kernel BUG at fs/buffer.c:2786!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 6093 Comm: syz-executor202 Not tainted 6.7.0-rc3-syzkaller-g2cc14f52aeb7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : submit_bh_wbc+0x430/0x49c fs/buffer.c:2786
lr : submit_bh_wbc+0x430/0x49c fs/buffer.c:2786
sp : ffff800096da7610
x29: ffff800096da7620 x28: fffffc00061bbf40 x27: dfff800000000000
x26: 0000000000000002 x25: 0000000000000000 x24: 0000000000000000
x23: ffff0000dc7e2ee0 x22: 0000000000000004 x21: 0000000000000000
x20: ffff0000dc7e2e80 x19: 1fffe0001b8fc5d0 x18: 1fffe0003682a9ce
x17: ffff80008e4dd000 x16: ffff8000803193e4 x15: 0000000000000001
x14: 1fffe0001b8fc5dc x13: 0000000000000000 x12: 0000000000000000
x11: ffff60001b8fc5dd x10: 0000000000ff0100 x9 : 0000000000000000
x8 : ffff0000caa91bc0 x7 : ffff8000802921f8 x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000002 x3 : ffff800080bb7514
x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 submit_bh_wbc+0x430/0x49c fs/buffer.c:2786
 submit_bh fs/buffer.c:2826 [inline]
 __bh_read fs/buffer.c:3091 [inline]
 bh_read_nowait include/linux/buffer_head.h:420 [inline]
 __block_write_begin_int+0x924/0x1504 fs/buffer.c:2148
 __block_write_begin fs/buffer.c:2168 [inline]
 block_write_begin+0x98/0x11c fs/buffer.c:2227
 nilfs_write_begin+0xa8/0x114 fs/nilfs2/inode.c:261
 generic_perform_write+0x28c/0x588 mm/filemap.c:3918
 __generic_file_write_iter+0xfc/0x204 mm/filemap.c:4013
 generic_file_write_iter+0xb8/0x2b4 mm/filemap.c:4039
 call_write_iter include/linux/fs.h:2020 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x610/0x910 fs/read_write.c:584
 ksys_write+0x15c/0x26c fs/read_write.c:637
 __do_sys_write fs/read_write.c:649 [inline]
 __se_sys_write fs/read_write.c:646 [inline]
 __arm64_sys_write+0x7c/0x90 fs/read_write.c:646
 __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+0x54/0x158 arch/arm64/kernel/entry-common.c:678
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595
Code: 17ffffaf 97e5a9c1 d4210000 97e5a9bf (d4210000) 
---[ end trace 0000000000000000 ]---