diff options
author | Jiang Liu <liuj97@gmail.com> | 2013-06-06 16:07:27 (GMT) |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-06-06 19:12:20 (GMT) |
commit | 5863e10b441e7ea4b492f930f1be180a97d026f3 (patch) | |
tree | bad382bb83312dc87593623961747e00ff1d9ad6 /drivers/scsi/hpsa.c | |
parent | 12a7ad3b810e77137d0caf97a6dd97591e075b30 (diff) | |
download | linux-fsl-qoriq-5863e10b441e7ea4b492f930f1be180a97d026f3.tar.xz |
zram: protect sysfs handler from invalid memory access
Use zram->init_lock to protect access to zram->meta, otherwise it
may cause invalid memory access if zram->meta has been freed by
zram_reset_device().
This issue may be triggered by:
Thread 1:
while true; do cat mem_used_total; done
Thread 2:
while true; do echo 8M > disksize; echo 1 > reset; done
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/scsi/hpsa.c')
0 files changed, 0 insertions, 0 deletions