commit 623c30d2ae22cd4b8703c7750812464184d20f79 Author: Greg Kroah-Hartman Date: Tue Apr 11 10:19:28 2006 -0700 Linux 2.6.16.4 commit 0945e1a305ef6128c0405f1c5c8b5368d8756224 Author: Oleg Nesterov Date: Tue Apr 11 22:18:58 2006 +0400 [PATCH] RCU signal handling made this BUG_ON() unsafe. This code runs under ->siglock, while switch_exec_pids() takes tasklist_lock. Signed-off-by: Oleg Nesterov Signed-off-by: Linus Torvalds Signed-off-by: Greg Kroah-Hartman