linux/drivers/s390
Stefan Haberland 7db4042336 s390/dasd: fix error recovery leading to data corruption on ESE devices
Extent Space Efficient (ESE) or thin provisioned volumes need to be
formatted on demand during usual IO processing.

The dasd_ese_needs_format function checks for error codes that signal
the non existence of a proper track format.

The check for incorrect length is to imprecise since other error cases
leading to transport of insufficient data also have this flag set.
This might lead to data corruption in certain error cases for example
during a storage server warmstart.

Fix by removing the check for incorrect length and replacing by
explicitly checking for invalid track format in transport mode.

Also remove the check for file protected since this is not a valid
ESE handling case.

Cc: stable@vger.kernel.org # 5.3+
Fixes: 5e2b17e712 ("s390/dasd: Add dynamic formatting support for ESE volumes")
Reviewed-by: Jan Hoeppner <hoeppner@linux.ibm.com>
Signed-off-by: Stefan Haberland <sth@linux.ibm.com>
Link: https://lore.kernel.org/r/20240812125733.126431-3-sth@linux.ibm.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-08-12 10:31:08 -06:00
..
block s390/dasd: fix error recovery leading to data corruption on ESE devices 2024-08-12 10:31:08 -06:00
char - 875fa64577 ("mm/hugetlb_vmemmap: fix race with speculative PFN 2024-07-21 17:15:46 -07:00
cio s390 updates for 6.11 merge window 2024-07-18 15:41:45 -07:00
crypto s390/zcrypt: Use kvcalloc() instead of kvmalloc_array() 2024-05-17 10:43:43 +02:00
net net: Add struct kernel_ethtool_ts_info 2024-07-15 08:02:26 -07:00
scsi s390/zfcp: use new address translation helpers 2024-03-13 09:23:48 +01:00
virtio virtio: rename find_vqs_info() op to find_vqs() 2024-07-17 05:20:57 -04:00
Makefile