Warning: Permanently added '10.128.15.205' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   44.108360][ T3500] 
[   44.110693][ T3500] ============================================
[   44.116816][ T3500] WARNING: possible recursive locking detected
[   44.122937][ T3500] 5.15.119-syzkaller #0 Not tainted
[   44.128108][ T3500] --------------------------------------------
[   44.134227][ T3500] syz-executor237/3500 is trying to acquire lock:
[   44.140609][ T3500] ffff888019e9c468 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12f/0x1b60
[   44.149377][ T3500] 
[   44.149377][ T3500] but task is already holding lock:
[   44.156710][ T3500] ffff888019e9c068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_wait_readable+0x3e1/0x550
[   44.166067][ T3500] 
[   44.166067][ T3500] other info that might help us debug this:
[   44.174101][ T3500]  Possible unsafe locking scenario:
[   44.174101][ T3500] 
[   44.181615][ T3500]        CPU0
[   44.184869][ T3500]        ----
[   44.188124][ T3500]   lock(&pipe->mutex/1);
[   44.192434][ T3500]   lock(&pipe->mutex/1);
[   44.196751][ T3500] 
[   44.196751][ T3500]  *** DEADLOCK ***
[   44.196751][ T3500] 
[   44.204876][ T3500]  May be due to missing lock nesting notation
[   44.204876][ T3500] 
[   44.213166][ T3500] 1 lock held by syz-executor237/3500:
[   44.218596][ T3500]  #0: ffff888019e9c068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_wait_readable+0x3e1/0x550
[   44.228486][ T3500] 
[   44.228486][ T3500] stack backtrace:
[   44.234353][ T3500] CPU: 1 PID: 3500 Comm: syz-executor237 Not tainted 5.15.119-syzkaller #0
[   44.242912][ T3500] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
[   44.252942][ T3500] Call Trace:
[   44.256202][ T3500]  <TASK>
[   44.259114][ T3500]  dump_stack_lvl+0x1e3/0x2cb
[   44.263772][ T3500]  ? io_uring_drop_tctx_refs+0x19d/0x19d
[   44.269382][ T3500]  ? panic+0x84d/0x84d
[   44.273433][ T3500]  validate_chain+0x46cf/0x58b0
[   44.278262][ T3500]  ? reacquire_held_locks+0x660/0x660
[   44.283608][ T3500]  ? reacquire_held_locks+0x660/0x660
[   44.289044][ T3500]  ? reacquire_held_locks+0x660/0x660
[   44.294388][ T3500]  ? validate_chain+0x112/0x58b0
[   44.299305][ T3500]  ? look_up_lock_class+0x77/0x120
[   44.304739][ T3500]  ? register_lock_class+0x100/0x9a0
[   44.310005][ T3500]  ? is_dynamic_key+0x1f0/0x1f0
[   44.314831][ T3500]  ? mark_lock+0x98/0x340
[   44.319133][ T3500]  __lock_acquire+0x1295/0x1ff0
[   44.323960][ T3500]  lock_acquire+0x1db/0x4f0
[   44.328436][ T3500]  ? pipe_write+0x12f/0x1b60
[   44.333002][ T3500]  ? read_lock_is_recursive+0x10/0x10
[   44.338351][ T3500]  ? __might_sleep+0xc0/0xc0
[   44.342913][ T3500]  ? __lock_acquire+0x1295/0x1ff0
[   44.347911][ T3500]  __mutex_lock_common+0x1da/0x25a0
[   44.353090][ T3500]  ? pipe_write+0x12f/0x1b60
[   44.357708][ T3500]  ? pipe_write+0x12f/0x1b60
[   44.362280][ T3500]  ? mutex_lock_io_nested+0x60/0x60
[   44.367454][ T3500]  mutex_lock_nested+0x17/0x20
[   44.372191][ T3500]  pipe_write+0x12f/0x1b60
[   44.376580][ T3500]  ? __lock_acquire+0x1ff0/0x1ff0
[   44.381580][ T3500]  ? aa_file_perm+0x3af/0xf60
[   44.386228][ T3500]  ? pipe_read+0x12b0/0x12b0
[   44.390797][ T3500]  ? aa_path_link+0xea0/0xea0
[   44.395449][ T3500]  ? mutex_lock_nested+0x17/0x20
[   44.400366][ T3500]  do_iter_readv_writev+0x594/0x7a0
[   44.405540][ T3500]  ? generic_file_rw_checks+0x260/0x260
[   44.411057][ T3500]  ? common_file_perm+0x17d/0x1d0
[   44.416058][ T3500]  ? fsnotify_perm+0x67/0x5a0
[   44.420715][ T3500]  ? bpf_lsm_file_permission+0x5/0x10
[   44.426061][ T3500]  do_iter_write+0x1ea/0x760
[   44.430630][ T3500]  ? vfs_iter_write+0x69/0xa0
[   44.435290][ T3500]  iter_file_splice_write+0x806/0xfa0
[   44.440640][ T3500]  ? splice_from_pipe+0x230/0x230
[   44.445641][ T3500]  ? common_file_perm+0x17d/0x1d0
[   44.450644][ T3500]  ? fsnotify_perm+0x67/0x5a0
[   44.455397][ T3500]  ? bpf_lsm_file_permission+0x5/0x10
[   44.460743][ T3500]  ? splice_from_pipe+0x230/0x230
[   44.465831][ T3500]  do_splice+0xfe6/0x1790
[   44.470140][ T3500]  ? __fget_files+0x413/0x480
[   44.474793][ T3500]  ? wait_for_space+0x2d0/0x2d0
[   44.479616][ T3500]  ? __fdget+0x191/0x220
[   44.483866][ T3500]  __se_sys_splice+0x340/0x420
[   44.488693][ T3500]  ? __x64_sys_splice+0xf0/0xf0
[   44.493517][ T3500]  ? syscall_enter_from_user_mode+0x2e/0x230
[   44.499475][ T3500]  ? lockdep_hardirqs_on+0x94/0x130
[   44.504652][ T3500]  ? __x64_sys_splice+0x1d/0xf0
[   44.509475][ T3500]  do_syscall_64+0x3d/0xb0
[   44.513864][ T3500]  entry_SYSCALL_64_after_hwframe+0x61/0xcb
[   44.519733][ T3500] RIP: 0033:0x7fb23ed5cf79
[   44.524123][ T3500] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 81 14 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
[   44.543787][ T3500] RSP: 002b:00007fb23ed0f278 EFLAGS: 00000246 ORIG_RAX: 0000000000000113
[   44.552173][ T3500] RAX: ffffffffffffffda RBX: 00007fb23ede5428 RCX: 00007fb23ed5cf79
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