On Thu, 29 May 2025 11:20:36 -0400 Jeff Layton wrote:

Sorry for the reposting, but this makes things easier with automated CI.

This posting just drops the pr_warn() calls from the new functions. We
were still seeing some warnings during (expected) times that debugfs
file creation would fail. debugfs already throws warnings when these
things fail unexpectedly, so these warnings are unwanted when dentry
creation fails before debugfs is up.

Hm, so FWIW we hit a lockdep issue now
raw:
 https://netdev-3.bots.linux.dev/vmksft-tcp-ao-dbg/results/142540/4-connect-deny-ipv6/stderr
decoded:
https://netdev-3.bots.linux.dev/vmksft-tcp-ao-dbg/results/142540/vm-crash-thr0-10

I suspect this may just be "merge window fun", since we forwarded our
trees to Linus's since your v11?

[   14.281410][    C0] inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage.
[   14.281692][    C0] swapper/0/0 [HC0[0]:SC1[1]:HE1:SE0] takes:
[   14.281974][    C0] ffffffff9e1c5af8 (pin_fs_lock){+.?.}-{3:3}, at: simple_pin_fs+0x24/0x150
[   14.282373][    C0] {SOFTIRQ-ON-W} state was registered at:
[   14.282614][    C0]   __lock_acquire+0x20b/0x7e0
[   14.282849][    C0]   lock_acquire.part.0+0xb6/0x240
[   14.283072][    C0]   _raw_spin_lock+0x33/0x40
[   14.283298][    C0]   simple_pin_fs+0x24/0x150
[   14.283524][    C0]   start_creating.part.0+0x52/0x310
[   14.283752][    C0]   debugfs_create_dir+0x6a/0x540
[   14.283977][    C0]   component_debug_init+0x17/0x30
[   14.284206][    C0]   do_one_initcall+0x8f/0x1e0
[   14.284451][    C0]   do_initcalls+0x176/0x280
[   14.284679][    C0]   kernel_init_freeable+0x22d/0x300
[   14.284907][    C0]   kernel_init+0x20/0x200
[   14.285131][    C0]   ret_from_fork+0x240/0x320
[   14.285359][    C0]   ret_from_fork_asm+0x1a/0x30
[   14.285580][    C0] irq event stamp: 410868
[   14.285750][    C0] hardirqs last  enabled at (410868): [<ffffffff9cfc332d>] _raw_spin_unlock_irqrestore+0x5d/0x80
[   14.286200][    C0] hardirqs last disabled at (410867): [<ffffffff9cfc300b>] _raw_spin_lock_irqsave+0x5b/0x60
[   14.286653][    C0] softirqs last  enabled at (409604): [<ffffffff9a6877a8>] handle_softirqs+0x358/0x620
[   14.287061][    C0] softirqs last disabled at (409635): [<ffffffff9a687bfa>] __irq_exit_rcu+0xfa/0x160