Dmitry, do you know how/why syzbot is enabling debug messages? On 2018/07/09 16:38, Greg Kroah-Hartman wrote: > On Mon, Jul 09, 2018 at 10:10:34AM +0900, Tetsuo Handa wrote: >> >From 62ddef96020cb397dcbf4b8574f1859b32f983de Mon Sep 17 00:00:00 2001 >> From: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx> >> Date: Mon, 9 Jul 2018 09:54:01 +0900 >> Subject: [PATCH] ANDROID: binder: Latelimit binder_debug(). >> >> syzbot is reporting hung tasks [1] [2]. This might be due to flooding of >> printk() messages from binder subsystem, for NMI backtrace says the CPU >> was busy doing printk() from binder subsystem. Since the kernel log buffer >> is trivially spammed by debug messages, let's latelimit binder_debug(). > > How is the binder debug messages being turned on? They are not enabled > by default, is syzbot enabling them? If so, then I don't know if this > needs to be changed, as you want those debug messages if you ask for > them, you shouldn't ratelimit them. > > thanks, > > greg k-h > _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
