Warning: Permanently added '10.128.0.84' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   43.857341][ T3965] 
[   43.857916][ T3965] ============================================
[   43.859224][ T3965] WARNING: possible recursive locking detected
[   43.860520][ T3965] 5.15.115-syzkaller #0 Not tainted
[   43.861635][ T3965] --------------------------------------------
[   43.862936][ T3965] syz-executor265/3965 is trying to acquire lock:
[   43.864304][ T3965] ffff0000d9e68068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x10c/0x1a4c
[   43.866315][ T3965] 
[   43.866315][ T3965] but task is already holding lock:
[   43.867940][ T3965] ffff0000d9e68468 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_wait_readable+0x324/0x46c
[   43.869988][ T3965] 
[   43.869988][ T3965] other info that might help us debug this:
[   43.871687][ T3965]  Possible unsafe locking scenario:
[   43.871687][ T3965] 
[   43.873287][ T3965]        CPU0
[   43.874016][ T3965]        ----
[   43.874756][ T3965]   lock(&pipe->mutex/1);
[   43.875734][ T3965]   lock(&pipe->mutex/1);
[   43.876651][ T3965] 
[   43.876651][ T3965]  *** DEADLOCK ***
[   43.876651][ T3965] 
[   43.878501][ T3965]  May be due to missing lock nesting notation
[   43.878501][ T3965] 
[   43.880333][ T3965] 1 lock held by syz-executor265/3965:
[   43.881557][ T3965]  #0: ffff0000d9e68468 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_wait_readable+0x324/0x46c
[   43.883697][ T3965] 
[   43.883697][ T3965] stack backtrace:
[   43.885012][ T3965] CPU: 0 PID: 3965 Comm: syz-executor265 Not tainted 5.15.115-syzkaller #0
[   43.886854][ T3965] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
[   43.889058][ T3965] Call trace:
[   43.889764][ T3965]  dump_backtrace+0x0/0x530
[   43.890724][ T3965]  show_stack+0x2c/0x3c
[   43.891616][ T3965]  dump_stack_lvl+0x108/0x170
[   43.892648][ T3965]  dump_stack+0x1c/0x58
[   43.893580][ T3965]  __lock_acquire+0x62b4/0x7620
[   43.894683][ T3965]  lock_acquire+0x240/0x77c
[   43.895656][ T3965]  __mutex_lock_common+0x194/0x2154
[   43.896803][ T3965]  mutex_lock_nested+0xa4/0xf8
[   43.897843][ T3965]  pipe_write+0x10c/0x1a4c
[   43.898802][ T3965]  do_iter_readv_writev+0x420/0x5f8
[   43.899937][ T3965]  do_iter_write+0x1b8/0x664
[   43.900954][ T3965]  vfs_iter_write+0x88/0xac
[   43.901913][ T3965]  iter_file_splice_write+0x618/0xc48
[   43.903072][ T3965]  do_splice+0x11b4/0x1a0c
[   43.904000][ T3965]  __arm64_sys_splice+0x564/0x8b0
[   43.905139][ T3965]  invoke_syscall+0x98/0x2b8
[   43.906146][ T3965]  el0_svc_common+0x138/0x258
[   43.907242][ T3965]  do_el0_svc+0x58/0x14c
[   43.908127][ T3965]  el0_svc+0x7c/0x1f0
[   43.908952][ T3965]  el0t_64_sync_handler+0x84/0xe4
[   43.910155][ T3965]  el0t_64_sync+0x1a0/0x1a4