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When hot removing memory, a firmware_map_entry which has memory range of the memory is released by release_firmware_map_entry(). If the entry is allocated by bootmem, release_firmware_map_entry() adds the entry to map_entires_bootmem list when firmware_map_find_entry() finds the entry from map_entries list. But firmware_map_find_entry never find the entry sicne map_entires list does not have the entry. So the entry just leaks. Here are steps of leaking firmware_map_entry: firmware_map_remove() -> firmware_map_find_entry() Find released entry from map_entries list -> firmware_map_remove_entry() Delete the entry from map_entries list -> remove_sysfs_fw_map_entry() ... -> release_firmware_map_entry() -> firmware_map_find_entry() Find the entry from map_entries list but the entry has been deleted from map_entries list. So the entry is not added to map_entries_bootmem. Thus the entry leaks release_firmware_map_entry() should not call firmware_map_find_entry() since releaed entry has been deleted from map_entries list. So the patch delete firmware_map_find_entry() from releae_firmware_map_entry() Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Reviewed-by: Wanpeng Li <liwanp@linux.vnet.ibm.com> Reviewed-by: Tang Chen <tangchen@cn.fujitsu.com> Acked-by: Toshi Kani <toshi.kani@hp.com> Cc: Wen Congyang <wency@cn.fujitsu.com> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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dcdbas.c | ||
dcdbas.h | ||
dell_rbu.c | ||
dmi_scan.c | ||
dmi-id.c | ||
dmi-sysfs.c | ||
edd.c | ||
efivars.c | ||
iscsi_ibft_find.c | ||
iscsi_ibft.c | ||
Kconfig | ||
Makefile | ||
memmap.c | ||
pcdp.c | ||
pcdp.h |