]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
coredump: let dump_emit() bail out on short writes
authorJann Horn <jannh@google.com>
Fri, 16 Oct 2020 03:12:43 +0000 (20:12 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Fri, 16 Oct 2020 18:11:21 +0000 (11:11 -0700)
commitdf0c09c0117300cd03f6e8532527bf591d4eee65
treeb77a1adcf9afeedfdf8932e79a7e03d796a2f879
parent8f942eea12ae8c5a7cde85c145234b25e38de959
coredump: let dump_emit() bail out on short writes

dump_emit() has a retry loop, but there seems to be no way for that retry
logic to actually be used; and it was also buggy, writing the same data
repeatedly after a short write.

Let's just bail out on a short write.

Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: "Eric W . Biederman" <ebiederm@xmission.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Link: http://lkml.kernel.org/r/20200827114932.3572699-3-jannh@google.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
fs/coredump.c