Re: Bug involving dynamic_debug and '-p' modifier
Hi Andrew, Thanks for the bug report. I need to send a patch to update the maintainers file... Haven't had a chance to look into this yet. Will get back to you. Thanks, -Jason On 03/11/2013 10:28 PM, Andrew Cooks wrote: > On Tue, Mar 12, 2013 at 9:14 AM, Andrew Cooks wrote: >> Hi Jason >> >> When I specify a '-p' modifier in the dynamic debug options in the >> kernel command line, I get a kernel panic during boot. The panic >> happens after userspace starts doing graphical stuff, but I haven't >> been able to pinpoint exactly what. >> >> If I use '=_' instead of '-p', or boot to a recovery mode, or change >> the modifier after booting using debugfs, the panic doesn't occur. For >> example, booting to runlevel 3 with '=_', then flipping the same >> modifier to first to '+p' and then to '-p', before starting X does not >> result in a panic. >> >> Booting to runlevel 3 (or even 1!), with '-p' results in a panic, but >> 'rdshell' is OK. >> >> I also tried the Red Hat kernel (just because it's installed - I >> haven't figured out how to tell the package manager that I don't want >> a kernel). This also panics, but it says that '-p' is not supported. >> >> Please let me know if you need me to do any other tests. >> >> '-p', panic: http://pastebin.com/8yAcBQdY >> '-p', rdshell, no panic: http://pastebin.com/Hi2a7BZA >> >> -- >> a. > Jason's mail bounced, so redirecting to Jim Cromie, who made the most > recent significant changes to dynamic_debug... > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majord...@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: Bug involving dynamic_debug and '-p' modifier
Hi Andrew, Thanks for the bug report. I need to send a patch to update the maintainers file... Haven't had a chance to look into this yet. Will get back to you. Thanks, -Jason On 03/11/2013 10:28 PM, Andrew Cooks wrote: On Tue, Mar 12, 2013 at 9:14 AM, Andrew Cooks aco...@gmail.com wrote: Hi Jason When I specify a '-p' modifier in the dynamic debug options in the kernel command line, I get a kernel panic during boot. The panic happens after userspace starts doing graphical stuff, but I haven't been able to pinpoint exactly what. If I use '=_' instead of '-p', or boot to a recovery mode, or change the modifier after booting using debugfs, the panic doesn't occur. For example, booting to runlevel 3 with '=_', then flipping the same modifier to first to '+p' and then to '-p', before starting X does not result in a panic. Booting to runlevel 3 (or even 1!), with '-p' results in a panic, but 'rdshell' is OK. I also tried the Red Hat kernel (just because it's installed - I haven't figured out how to tell the package manager that I don't want a kernel). This also panics, but it says that '-p' is not supported. Please let me know if you need me to do any other tests. '-p', panic: http://pastebin.com/8yAcBQdY '-p', rdshell, no panic: http://pastebin.com/Hi2a7BZA -- a. Jason's mail bounced, so redirecting to Jim Cromie, who made the most recent significant changes to dynamic_debug... -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: Bug involving dynamic_debug and '-p' modifier
On Tue, Mar 12, 2013 at 9:14 AM, Andrew Cooks wrote: > Hi Jason > > When I specify a '-p' modifier in the dynamic debug options in the > kernel command line, I get a kernel panic during boot. The panic > happens after userspace starts doing graphical stuff, but I haven't > been able to pinpoint exactly what. > > If I use '=_' instead of '-p', or boot to a recovery mode, or change > the modifier after booting using debugfs, the panic doesn't occur. For > example, booting to runlevel 3 with '=_', then flipping the same > modifier to first to '+p' and then to '-p', before starting X does not > result in a panic. > > Booting to runlevel 3 (or even 1!), with '-p' results in a panic, but > 'rdshell' is OK. > > I also tried the Red Hat kernel (just because it's installed - I > haven't figured out how to tell the package manager that I don't want > a kernel). This also panics, but it says that '-p' is not supported. > > Please let me know if you need me to do any other tests. > > '-p', panic: http://pastebin.com/8yAcBQdY > '-p', rdshell, no panic: http://pastebin.com/Hi2a7BZA > > -- > a. Jason's mail bounced, so redirecting to Jim Cromie, who made the most recent significant changes to dynamic_debug... -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: Bug involving dynamic_debug and '-p' modifier
On Tue, Mar 12, 2013 at 9:14 AM, Andrew Cooks aco...@gmail.com wrote: Hi Jason When I specify a '-p' modifier in the dynamic debug options in the kernel command line, I get a kernel panic during boot. The panic happens after userspace starts doing graphical stuff, but I haven't been able to pinpoint exactly what. If I use '=_' instead of '-p', or boot to a recovery mode, or change the modifier after booting using debugfs, the panic doesn't occur. For example, booting to runlevel 3 with '=_', then flipping the same modifier to first to '+p' and then to '-p', before starting X does not result in a panic. Booting to runlevel 3 (or even 1!), with '-p' results in a panic, but 'rdshell' is OK. I also tried the Red Hat kernel (just because it's installed - I haven't figured out how to tell the package manager that I don't want a kernel). This also panics, but it says that '-p' is not supported. Please let me know if you need me to do any other tests. '-p', panic: http://pastebin.com/8yAcBQdY '-p', rdshell, no panic: http://pastebin.com/Hi2a7BZA -- a. Jason's mail bounced, so redirecting to Jim Cromie, who made the most recent significant changes to dynamic_debug... -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
