Warning: Permanently added '10.128.1.159' (ED25519) to the list of known hosts.
executing program
[   31.817591][ T4221] 
[   31.818311][ T4221] ============================================
[   31.819807][ T4221] WARNING: possible recursive locking detected
[   31.821379][ T4221] 6.1.64-syzkaller #0 Not tainted
[   31.822676][ T4221] --------------------------------------------
[   31.824253][ T4221] syz-executor233/4221 is trying to acquire lock:
[   31.825847][ T4221] ffff0000dd0f7868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x114/0x1990
[   31.828099][ T4221] 
[   31.828099][ T4221] but task is already holding lock:
[   31.830026][ T4221] ffff0000dd0f7c68 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_lock+0x68/0x98
[   31.832212][ T4221] 
[   31.832212][ T4221] other info that might help us debug this:
[   31.834323][ T4221]  Possible unsafe locking scenario:
[   31.834323][ T4221] 
[   31.836271][ T4221]        CPU0
[   31.837083][ T4221]        ----
[   31.837966][ T4221]   lock(&pipe->mutex/1);
[   31.839120][ T4221]   lock(&pipe->mutex/1);
[   31.840240][ T4221] 
[   31.840240][ T4221]  *** DEADLOCK ***
[   31.840240][ T4221] 
[   31.842349][ T4221]  May be due to missing lock nesting notation
[   31.842349][ T4221] 
[   31.844423][ T4221] 1 lock held by syz-executor233/4221:
[   31.845797][ T4221]  #0: ffff0000dd0f7c68 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_lock+0x68/0x98
[   31.848090][ T4221] 
[   31.848090][ T4221] stack backtrace:
[   31.849623][ T4221] CPU: 1 PID: 4221 Comm: syz-executor233 Not tainted 6.1.64-syzkaller #0
[   31.851843][ T4221] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
[   31.854473][ T4221] Call trace:
[   31.855356][ T4221]  dump_backtrace+0x1c8/0x1f4
[   31.856564][ T4221]  show_stack+0x2c/0x3c
[   31.857619][ T4221]  dump_stack_lvl+0x108/0x170
[   31.858796][ T4221]  dump_stack+0x1c/0x58
[   31.859886][ T4221]  __lock_acquire+0x6310/0x764c
[   31.861163][ T4221]  lock_acquire+0x26c/0x7cc
[   31.862355][ T4221]  __mutex_lock_common+0x190/0x21a0
[   31.863673][ T4221]  mutex_lock_nested+0x38/0x44
[   31.864898][ T4221]  pipe_write+0x114/0x1990
[   31.866052][ T4221]  do_iter_write+0x534/0x964
[   31.867262][ T4221]  vfs_iter_write+0x88/0xac
[   31.868477][ T4221]  iter_file_splice_write+0x618/0xc48
[   31.869845][ T4221]  do_splice+0xfd0/0x1898
[   31.870958][ T4221]  __arm64_sys_splice+0x50c/0x7fc
[   31.872321][ T4221]  invoke_syscall+0x98/0x2c0
[   31.873505][ T4221]  el0_svc_common+0x138/0x258
[   31.874705][ T4221]  do_el0_svc+0x64/0x218
[   31.875798][ T4221]  el0_svc+0x58/0x168
[   31.876849][ T4221]  el0t_64_sync_handler+0x84/0xf0
[   31.878113][ T4221]  el0t_64_sync+0x18c/0x190