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| author | Oliver Neukum <[email protected]> | 2020-04-15 14:17:50 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <[email protected]> | 2020-04-16 12:59:48 +0000 |
| commit | f6cc6093a729ede1ff5658b493237c42b82ba107 (patch) | |
| tree | c82c00190b727efc03aa224facd0de50e5a5046a /drivers/usb/class/cdc-acm.c | |
| parent | UAS: no use logging any details in case of ENODEV (diff) | |
| download | kernel-f6cc6093a729ede1ff5658b493237c42b82ba107.tar.gz kernel-f6cc6093a729ede1ff5658b493237c42b82ba107.zip | |
UAS: fix deadlock in error handling and PM flushing work
A SCSI error handler and block runtime PM must not allocate
memory with GFP_KERNEL. Furthermore they must not wait for
tasks allocating memory with GFP_KERNEL.
That means that they cannot share a workqueue with arbitrary tasks.
Fix this for UAS using a private workqueue.
Signed-off-by: Oliver Neukum <[email protected]>
Fixes: f9dc024a2da1f ("uas: pre_reset and suspend: Fix a few races")
Cc: stable <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Diffstat (limited to 'drivers/usb/class/cdc-acm.c')
0 files changed, 0 insertions, 0 deletions