Re: [PATCH v2] sysctl: Add panic-fatal-signals

2019-01-30 Thread Vincent Whitchurch
On Wed, Jan 30, 2019 at 04:02:36PM +0100, Richard Weinberger wrote: > Hmm, why can't this be a core dump helper? > Such as: > > #!/bin/sh > # Usage: > # echo "|/root/crash.sh %p %e %s" > /proc/sys/kernel/core_pattern > > PID="$1" > COMM="$2" > SIGNAL="$3" > > echo "$COMM ($PID) died by signal $S

Re: [PATCH v2] sysctl: Add panic-fatal-signals

2019-01-30 Thread Richard Weinberger
On Wed, Jan 30, 2019 at 3:49 PM Luis Chamberlain wrote: > > On Mon, Jan 28, 2019 at 10:05:45AM -0800, Andrew Morton wrote: > > On Mon, 28 Jan 2019 09:49:59 +0100 Vincent Whitchurch > > wrote: > > > --- a/init/Kconfig > > > +++ b/init/Kconfig > > > @@ -1242,6 +1242,20 @@ config SYSCTL_SYSCALL > >

Re: [PATCH v2] sysctl: Add panic-fatal-signals

2019-01-30 Thread Luis Chamberlain
On Mon, Jan 28, 2019 at 10:05:45AM -0800, Andrew Morton wrote: > On Mon, 28 Jan 2019 09:49:59 +0100 Vincent Whitchurch > wrote: > > --- a/init/Kconfig > > +++ b/init/Kconfig > > @@ -1242,6 +1242,20 @@ config SYSCTL_SYSCALL > > > > If unsure say N here. > > > > +config SYSCTL_PANIC_FATAL

Re: [PATCH v2] sysctl: Add panic-fatal-signals

2019-01-28 Thread Andrew Morton
On Mon, 28 Jan 2019 09:49:59 +0100 Vincent Whitchurch wrote: > Add a sysctl which asks the kernel to panic when any userspace process > receives a fatal signal which would trigger a core dump. This has > proven to be quite useful when debugging problems seen during testing of > embedded systems