diff options
| author | Tadeusz Struk <[email protected]> | 2019-12-12 09:48:47 -0800 |
|---|---|---|
| committer | Jarkko Sakkinen <[email protected]> | 2019-12-17 12:20:04 +0200 |
| commit | d23d12484307b40eea549b8a858f5fffad913897 (patch) | |
| tree | 40e278f20d0effbf43f8065b617459067e3a1c21 /lib/netdev-notifier-error-inject.c | |
| parent | 45477b3fe3d10376b649b1b85fce72b2f9f1da84 (diff) | |
tpm: fix invalid locking in NONBLOCKING mode
When an application sends TPM commands in NONBLOCKING mode
the driver holds chip->tpm_mutex returning from write(),
which triggers: "WARNING: lock held when returning to user space".
To fix this issue the driver needs to release the mutex before
returning and acquire it again in tpm_dev_async_work() before
sending the command.
Cc: [email protected]
Fixes: 9e1b74a63f776 (tpm: add support for nonblocking operation)
Reported-by: Jeffrin Jose T <[email protected]>
Tested-by: Jeffrin Jose T <[email protected]>
Signed-off-by: Tadeusz Struk <[email protected]>
Reviewed-by: Jarkko Sakkinen <[email protected]>
Signed-off-by: Jarkko Sakkinen <[email protected]>
Diffstat (limited to 'lib/netdev-notifier-error-inject.c')
0 files changed, 0 insertions, 0 deletions