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| author |   Jerome Marchand <jmarchan@redhat.com> | 2016-01-15 16:54:48 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2016-01-15 17:56:32 -0800 |
| commit | 17ec4cd985780a7e30aa45bb8f272237c12502a4 (patch) | |
| tree | b92ceba1c365778b13c02a10b98bb1418d039323 /mm/swap_state.c | |
| parent | mm: add page_check_address_transhuge() helper (diff) | |
| download | linux-dev-17ec4cd985780a7e30aa45bb8f272237c12502a4.tar.xz linux-dev-17ec4cd985780a7e30aa45bb8f272237c12502a4.zip | |
zram: don't call idr_remove() from zram_remove()
The use of idr_remove() is forbidden in the callback functions of
idr_for_each(). It is therefore unsafe to call idr_remove in
zram_remove().
This patch moves the call to idr_remove() from zram_remove() to
hot_remove_store(). In the detroy_devices() path, idrs are removed by
idr_destroy(). This solves an use-after-free detected by KASan.
[akpm@linux-foundation.org: fix coding stype, per Sergey]
Signed-off-by: Jerome Marchand <jmarchan@redhat.com>
Acked-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: <stable@vger.kernel.org> [4.2+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/swap_state.c')
0 files changed, 0 insertions, 0 deletions