From: Jovi Zhang Date: Mon, 30 Jul 2012 21:42:23 +0000 (-0700) Subject: coredump: fix wrong comments on core limits of pipe coredump case X-Git-Tag: v3.6-rc1~41^2~26 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=108ceeb020bb3558fe175a3fc8b60fd6c1a2a279;p=karo-tx-linux.git coredump: fix wrong comments on core limits of pipe coredump case In commit 898b374af6f7 ("exec: replace call_usermodehelper_pipe with use of umh init function and resolve limit"), the core limits recursive check value was changed from 0 to 1, but the corresponding comments were not updated. Signed-off-by: Jovi Zhang Cc: Oleg Nesterov Cc: Neil Horman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/fs/exec.c b/fs/exec.c index 5af8390e0fae..3684353ebd5f 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -2174,15 +2174,16 @@ void do_coredump(long signr, int exit_code, struct pt_regs *regs) } if (cprm.limit == 1) { - /* + /* See umh_pipe_setup() which sets RLIMIT_CORE = 1. + * * Normally core limits are irrelevant to pipes, since * we're not writing to the file system, but we use - * cprm.limit of 1 here as a speacial value. Any - * non-1 limit gets set to RLIM_INFINITY below, but - * a limit of 0 skips the dump. This is a consistent - * way to catch recursive crashes. We can still crash - * if the core_pattern binary sets RLIM_CORE = !1 - * but it runs as root, and can do lots of stupid things + * cprm.limit of 1 here as a speacial value, this is a + * consistent way to catch recursive crashes. + * We can still crash if the core_pattern binary sets + * RLIM_CORE = !1, but it runs as root, and can do + * lots of stupid things. + * * Note that we use task_tgid_vnr here to grab the pid * of the process group leader. That way we get the * right pid if a thread in a multi-threaded