Tejun Heo ce36394269 mmap: fix petty bug in anonymous shared mmap offset handling ... Anonymous mappings should ignore offset but shared anonymous mapping forgot to clear it and makes the following legit test program trigger SIGBUS. #include <sys/mman.h> #include <stdio.h> #include <errno.h> #define PAGE_SIZE 4096 int main(void) { char *p; int i; p = mmap(NULL, 2 * PAGE_SIZE, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_ANONYMOUS, -1, PAGE_SIZE); if (p == MAP_FAILED) { perror("mmap"); return 1; } for (i = 0; i < 2; i++) { printf("page %d\n", i); p[i * 4096] = i; } return 0; } Fix it. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Hugh Dickins <hugh@veritas.com> Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2008-09-03 19:58:53 -07:00
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allocpercpu.c
backing-dev.c
bootmem.c
bounce.c
dmapool.c
fadvise.c
filemap_xip.c
filemap.c	VFS: fix dio write returning EIO when try_to_release_page fails	2008-09-02 19:21:37 -07:00
fremap.c
highmem.c
hugetlb.c
internal.h
Kconfig
maccess.c
madvise.c
Makefile
memcontrol.c
memory_hotplug.c
memory.c
mempolicy.c
mempool.c
migrate.c
mincore.c
mlock.c
mm_init.c
mmap.c	mmap: fix petty bug in anonymous shared mmap offset handling	2008-09-03 19:58:53 -07:00
mmu_notifier.c
mmzone.c
mprotect.c
mremap.c
msync.c
nommu.c
oom_kill.c
page_alloc.c	mm/bootmem: silence section mismatch warning - contig_page_data/bootmem_node_data	2008-09-02 19:21:37 -07:00
page_io.c
page_isolation.c	Remove '#include <stddef.h>' from mm/page_isolation.c	2008-09-02 09:29:01 +01:00
page-writeback.c
pagewalk.c
pdflush.c
prio_tree.c
quicklist.c	mm: size of quicklists shouldn't be proportional to the number of CPUs	2008-09-02 19:21:38 -07:00
readahead.c
rmap.c
shmem_acl.c
shmem.c
slab.c
slob.c
slub.c
sparse-vmemmap.c
sparse.c
swap_state.c
swap.c
swapfile.c
thrash.c
tiny-shmem.c
truncate.c	VFS: fix dio write returning EIO when try_to_release_page fails	2008-09-02 19:21:37 -07:00
util.c
vmalloc.c
vmscan.c
vmstat.c