Re: [PATCH] dma-debug: fix soft lockup when a lot of debug are enabled

2018-12-12 Thread Anders Roxell
On Tue, 11 Dec 2018 at 12:51, Robin Murphy wrote: > > Hi Anders, Hi Robin, > > On 11/12/2018 10:36, Anders Roxell wrote: > > When running a kernel in qemu with enough debugging options (slub-debug, > > ftrace, kcov, kasan, ubsan, ...) enabled together, that results in a > > slow initcall. So a '

Re: [PATCH] dma-debug: fix soft lockup when a lot of debug are enabled

2018-12-11 Thread Robin Murphy
Hi Anders, On 11/12/2018 10:36, Anders Roxell wrote: When running a kernel in qemu with enough debugging options (slub-debug, ftrace, kcov, kasan, ubsan, ...) enabled together, that results in a slow initcall. So a 'watchdog: BUG: soft lockup' happens: [ 44.105619] Call trace: [ 44.106709]

[PATCH] dma-debug: fix soft lockup when a lot of debug are enabled

2018-12-11 Thread Anders Roxell
When running a kernel in qemu with enough debugging options (slub-debug, ftrace, kcov, kasan, ubsan, ...) enabled together, that results in a slow initcall. So a 'watchdog: BUG: soft lockup' happens: [ 44.105619] Call trace: [ 44.106709] __slab_alloc+0x70/0x88 [ 44.107757] kmem_cache_alloc