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Jerome Marchand aee0848f2e zram: don't call idr_remove() from zram_remove() ... commit 17ec4cd985 upstream. 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> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		History 2016-02-17 12:31:06 -08:00
..
Kconfig	zram: remove obsolete ZRAM_DEBUG option	2015-06-25 17:00:35 -07:00
Makefile	zram: add lz4 algorithm backend	2014-04-07 16:36:01 -07:00
zcomp.c	zram/zcomp: use GFP_NOIO to allocate streams	2016-02-17 12:31:05 -08:00
zcomp.h	zram: check comp algorithm availability earlier	2015-06-25 17:00:37 -07:00
zcomp_lz4.c	zram: try vmalloc() after kmalloc()	2016-02-17 12:31:05 -08:00
zcomp_lz4.h	zram: add lz4 algorithm backend	2014-04-07 16:36:01 -07:00
zcomp_lzo.c	zram: try vmalloc() after kmalloc()	2016-02-17 12:31:05 -08:00
zcomp_lzo.h	zram: introduce compressing backend abstraction	2014-04-07 16:36:01 -07:00
zram_drv.c	zram: don't call idr_remove() from zram_remove()	2016-02-17 12:31:06 -08:00
zram_drv.h	zsmalloc/zram: introduce zs_pool_stats api	2015-09-08 15:35:28 -07:00