Warning: Permanently added '10.128.1.87' (ECDSA) to the list of known hosts.
executing program
[   35.644073][ T5968] 
[   35.644633][ T5968] ============================================
[   35.646202][ T5968] WARNING: possible recursive locking detected
[   35.647635][ T5968] 6.4.0-rc3-syzkaller-geb0f1697d729 #0 Not tainted
[   35.649236][ T5968] --------------------------------------------
[   35.650705][ T5968] syz-executor612/5968 is trying to acquire lock:
[   35.652329][ T5968] ffff0000d8b21468 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x108/0x19c8
[   35.654503][ T5968] 
[   35.654503][ T5968] but task is already holding lock:
[   35.656244][ T5968] ffff0000d8b21868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_wait_readable+0x320/0x468
[   35.658730][ T5968] 
[   35.658730][ T5968] other info that might help us debug this:
[   35.660720][ T5968]  Possible unsafe locking scenario:
[   35.660720][ T5968] 
[   35.662543][ T5968]        CPU0
[   35.663312][ T5968]        ----
[   35.664187][ T5968]   lock(&pipe->mutex/1);
[   35.665259][ T5968]   lock(&pipe->mutex/1);
[   35.666423][ T5968] 
[   35.666423][ T5968]  *** DEADLOCK ***
[   35.666423][ T5968] 
[   35.668539][ T5968]  May be due to missing lock nesting notation
[   35.668539][ T5968] 
[   35.670631][ T5968] 1 lock held by syz-executor612/5968:
[   35.671997][ T5968]  #0: ffff0000d8b21868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_wait_readable+0x320/0x468
[   35.674387][ T5968] 
[   35.674387][ T5968] stack backtrace:
[   35.675848][ T5968] CPU: 1 PID: 5968 Comm: syz-executor612 Not tainted 6.4.0-rc3-syzkaller-geb0f1697d729 #0
[   35.678359][ T5968] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
[   35.680873][ T5968] Call trace:
[   35.681697][ T5968]  dump_backtrace+0x1b8/0x1e4
[   35.682850][ T5968]  show_stack+0x2c/0x44
[   35.683940][ T5968]  dump_stack_lvl+0xd0/0x124
[   35.685140][ T5968]  dump_stack+0x1c/0x28
[   35.686232][ T5968]  __lock_acquire+0x6290/0x75f0
[   35.687437][ T5968]  lock_acquire+0x23c/0x71c
[   35.688556][ T5968]  __mutex_lock_common+0x190/0x21a0
[   35.689900][ T5968]  mutex_lock_nested+0x2c/0x38
[   35.691065][ T5968]  pipe_write+0x108/0x19c8
[   35.692200][ T5968]  do_iter_write+0x65c/0xa80
[   35.693384][ T5968]  vfs_iter_write+0x88/0xac
[   35.694550][ T5968]  iter_file_splice_write+0x610/0xc40
[   35.695952][ T5968]  do_splice+0x1040/0x1ba4
[   35.697077][ T5968]  __arm64_sys_splice+0x490/0x804
[   35.698264][ T5968]  invoke_syscall+0x98/0x2c0
[   35.699447][ T5968]  el0_svc_common+0x138/0x258
[   35.700609][ T5968]  do_el0_svc+0x64/0x198
[   35.701789][ T5968]  el0_svc+0x4c/0x15c
[   35.702733][ T5968]  el0t_64_sync_handler+0x84/0xf0
[   35.704008][ T5968]  el0t_64_sync+0x190/0x194