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| author | Stefan Haberland <sth@linux.vnet.ibm.com> | 2017-01-25 16:56:41 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2017-01-31 10:47:25 +0100 |
| commit | ca732e111ff7017e79a0cbb8aa0636c6ce48eb7d (patch) | |
| tree | 7097bbd9bf7f90edefde0fed88ffdb8bcd582618 /Documentation/process/volatile-considered-harmful.rst | |
| parent | s390/dasd: check for device error pointer within state change interrupts (diff) | |
| download | linux-ca732e111ff7017e79a0cbb8aa0636c6ce48eb7d.tar.xz linux-ca732e111ff7017e79a0cbb8aa0636c6ce48eb7d.zip | |
s390/dasd: check blockdevice pointer before trying to sync blockdevice
If safe offline is called for a DASD alias device a null pointer is passed
to fsync_bdev. So check for existence of the blockdevice before calling
fsync_bdev.
Should not be a real world problem since safe offline for an alias device
does not make sense and fsync_bdev can deal with a NULL pointer which it
gets after successful NULL pointer dereferencing on s390.
Signed-off-by: Stefan Haberland <sth@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'Documentation/process/volatile-considered-harmful.rst')
0 files changed, 0 insertions, 0 deletions