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authorAl Viro <viro@zeniv.linux.org.uk>2016-09-10 16:31:04 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2016-09-15 19:51:55 -0400
commit7798bf2140ebcc36eafec6a4194fffd8d585d471 (patch)
treef3babde13b19f0f95ba1f27d5af1569404722444 /arch/arm/lib
parent085354f907969fb3ee33f236368f6e1dd4c74d62 (diff)
downloadlinux-7798bf2140ebcc36eafec6a4194fffd8d585d471.tar.bz2
arc: don't leak bits of kernel stack into coredump
On faulting sigreturn we do get SIGSEGV, all right, but anything we'd put into pt_regs could end up in the coredump. And since __copy_from_user() never zeroed on arc, we'd better bugger off on its failure without copying random uninitialized bits of kernel stack into pt_regs... Cc: stable@vger.kernel.org Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/arm/lib')
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