NeilBrown 3d2fc4c082 x86: fix seq_file iteration for pat/memtype.c ... The memtype seq_file iterator allocates a buffer in the ->start and ->next functions and frees it in the ->show function. The preferred handling for such resources is to free them in the subsequent ->next or ->stop function call. Since Commit 1f4aace60b ("fs/seq_file.c: simplify seq_file iteration code and interface") there is no guarantee that ->show will be called after ->next, so this function can now leak memory. So move the freeing of the buffer to ->next and ->stop. Link: https://lkml.kernel.org/r/161248539022.21478.13874455485854739066.stgit@noble1 Fixes: 1f4aace60b ("fs/seq_file.c: simplify seq_file iteration code and interface") Signed-off-by: NeilBrown <neilb@suse.de> Cc: Xin Long <lucien.xin@gmail.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Andy Lutomirski <luto@kernel.org> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Cc: Neil Horman <nhorman@tuxdriver.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Vlad Yasevich <vyasevich@gmail.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2021-02-26 09:41:05 -08:00
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pat	x86: fix seq_file iteration for pat/memtype.c	2021-02-26 09:41:05 -08:00
amdtopology.c
cpu_entry_area.c
debug_pagetables.c
dump_pagetables.c
extable.c
fault.c	kfence: add test suite	2021-02-26 09:41:02 -08:00
highmem_32.c
hugetlbpage.c
ident_map.c
init.c	x86/mm: Increase pgt_buf size for 5-level page tables	2021-01-04 18:07:50 +01:00
init_32.c
init_64.c
iomap_32.c
ioremap.c
kasan_init_64.c
kaslr.c
kmmio.c
maccess.c
Makefile
mem_encrypt.c	Do not unroll string I/O for SEV-ES guests because they support it.	2021-02-20 19:16:02 -08:00
mem_encrypt_boot.S
mem_encrypt_identity.c
mm_internal.h
mmap.c
mmio-mod.c	x86: Remove definition of DEBUG	2021-01-15 08:23:10 +01:00
numa.c
numa_32.c
numa_64.c
numa_emulation.c
numa_internal.h
pf_in.c
pf_in.h
pgtable.c	x86/mm: Fix leak of pmd ptlock	2021-01-05 11:40:23 +01:00
pgtable_32.c
physaddr.c
physaddr.h
pkeys.c
pti.c
setup_nx.c
srat.c
testmmiotrace.c
tlb.c