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| author | Matias Bjørling <[email protected]> | 2016-11-10 11:26:57 +0000 |
|---|---|---|
| committer | Jens Axboe <[email protected]> | 2016-11-12 01:27:32 +0000 |
| commit | 409ae5a76e0505c8ffe1424f9c00dbf2ec7b5eea (patch) | |
| tree | 48c5e6f4ce025fad785016a2087c0f671d61003b /scripts/gcc-plugins/sancov_plugin.c | |
| parent | Merge tag 'acpi-4.9-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/raf... (diff) | |
| download | kernel-409ae5a76e0505c8ffe1424f9c00dbf2ec7b5eea.tar.gz kernel-409ae5a76e0505c8ffe1424f9c00dbf2ec7b5eea.zip | |
lightnvm: invalid offset calculation for lba_shift
The ns->lba_shift assumes its value to be the logarithmic of the
LA size. A previous patch duplicated the lba_shift calculation into
lightnvm. It prematurely also subtracted a 512byte shift, which commonly
is applied per-command. The 512byte shift being subtracted twice led to
data loss when restoring the logical to physical mapping table from
device and when issuing I/O commands using rrpc.
Fix offset by removing the 512byte shift subtraction when calculating
lba_shift.
Fixes: b0b4e09c1ae7 "lightnvm: control life of nvm_dev in driver"
Reported-by: Javier González <[email protected]>
Signed-off-by: Matias Bjørling <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
Diffstat (limited to 'scripts/gcc-plugins/sancov_plugin.c')
0 files changed, 0 insertions, 0 deletions