loop1: detected capacity change from 0 to 64
------------[ cut here ]------------
WARNING: CPU: 0 PID: 6684 at fs/buffer.c:1183 mark_buffer_dirty+0x284/0x490 fs/buffer.c:1183
Modules linked in:
CPU: 0 UID: 0 PID: 6684 Comm: syz.1.7 Not tainted 6.17.0-rc1-syzkaller-g8f5ae30d69d7 #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/18/2025
pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : mark_buffer_dirty+0x284/0x490 fs/buffer.c:1183
lr : mark_buffer_dirty+0x284/0x490 fs/buffer.c:1183
sp : ffff8000a2f573b0
x29: ffff8000a2f573b0 x28: ffff0000d7210160 x27: dfff800000000000
x26: ffff0000f79da000 x25: ffff0000f6269488 x24: ffff0000c17399f8
x23: ffff0000d7210018 x22: ffff0000c173e0e8 x21: 1fffe0001ae4202c
x20: 0000000000000010 x19: ffff0000c17399f8 x18: 00000000ffffffff
x17: ffff800093507000 x16: ffff8000805293e8 x15: 0000000000000001
x14: 1fffe000182e733f x13: 0000000000000000 x12: 0000000000000000
x11: 0000000000080000 x10: 000000000000c906 x9 : ffff8000a4efa000
x8 : 000000000000c907 x7 : 0000000000000000 x6 : 0000000000000000
x5 : ffff0000f79da200 x4 : ffff0000dfa47e00 x3 : ffff800080e6a618
x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 mark_buffer_dirty+0x284/0x490 fs/buffer.c:1183 (P)
 bfs_move_block fs/bfs/file.c:44 [inline]
 bfs_move_blocks fs/bfs/file.c:57 [inline]
 bfs_get_block+0x4d8/0x9d4 fs/bfs/file.c:126
 __block_write_begin_int+0x53c/0x15e8 fs/buffer.c:2145
 block_write_begin+0xa0/0x128 fs/buffer.c:2256
 bfs_write_begin+0x48/0xec fs/bfs/file.c:180
 generic_perform_write+0x244/0x7bc mm/filemap.c:4175
 __generic_file_write_iter+0xfc/0x204 mm/filemap.c:4292
 generic_file_write_iter+0x10c/0x47c mm/filemap.c:4318
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x540/0xa3c fs/read_write.c:686
 ksys_write+0x120/0x210 fs/read_write.c:738
 __do_sys_write fs/read_write.c:749 [inline]
 __se_sys_write fs/read_write.c:746 [inline]
 __arm64_sys_write+0x7c/0x90 fs/read_write.c:746
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x58/0x180 arch/arm64/kernel/entry-common.c:879
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596
irq event stamp: 4110
hardirqs last  enabled at (4109): [<ffff800080e6ce78>] bh_lru_install fs/buffer.c:1353 [inline]
hardirqs last  enabled at (4109): [<ffff800080e6ce78>] find_get_block_common+0x970/0xde8 fs/buffer.c:1410
hardirqs last disabled at (4110): [<ffff80008b001bfc>] el1_brk64+0x1c/0x48 arch/arm64/kernel/entry-common.c:574
softirqs last  enabled at (3742): [<ffff800080201608>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32
softirqs last disabled at (3740): [<ffff8000802015d4>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19
---[ end trace 0000000000000000 ]---