summaryrefslogtreecommitdiffstats
path: root/fs/proc/inode.c
diff options
context:
space:
mode:
authorAlexey Dobriyan <adobriyan@gmail.com>2015-07-17 16:24:09 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2015-07-17 16:39:54 -0700
commit3581d458c39bc5e58ceeeaf51796625bc978d2eb (patch)
tree4a996d189d715782dc31a2c7ad7e12de32b7de77 /fs/proc/inode.c
parentc9d120b0b2b5069cb2ae62f8eac0cef31c8544be (diff)
downloadlinux-3581d458c39bc5e58ceeeaf51796625bc978d2eb.tar.bz2
/proc/$PID/cmdline: fixup empty ARGV case
/proc/*/cmdline code checks if it should look at ENVP area by checking last byte of ARGV area: rv = access_remote_vm(mm, arg_end - 1, &c, 1, 0); if (rv <= 0) goto out_free_page; If ARGV is somehow made empty (by doing execve(..., NULL, ...) or manually setting ->arg_start and ->arg_end to equal values), the decision will be based on byte which doesn't even belong to ARGV/ENVP. So, quickly check if ARGV area is empty and report 0 to match previous behaviour. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/proc/inode.c')
0 files changed, 0 insertions, 0 deletions