Re: [PROBLEM]: WARNING: lock held when returning to user space! (5.4.1 #16 Tainted: G )

Will Deacon
2019-12-09T10:34:39Z

Hi,

[expanding cc list]

On Sat, Dec 07, 2019 at 11:04:20PM +0530, Jeffrin Jose wrote:
> i got the following output related from typical dmesg output from 5.4.1 kernel

Was this during boot or during some other operation?

> ================================================
> WARNING: lock held when returning to user space!
> 5.4.1 #16 Tainted: G E
> ------------------------------------------------
> tpm2-abrmd/691 is leaving the kernel with locks still held!
> 2 locks held by tpm2-abrmd/691:
> #0: ffff8881ee784ba8 (&chip->ops_sem){.+.+}, at: tpm_try_get_ops+0x2b/0xc0 [tpm]
> #1: ffff8881ee784d88 (&chip->tpm_mutex){+.+.}, at: tpm_try_get_ops+0x57/0xc0 [tpm]

Can you reproduce this failure on v5.5-rc1?

Thanks,

Will