On Thu, Sep 15, 2022, at 8:17 PM, kernel test robot wrote: > Hi Arnd, > tree: > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git > master > head: 3245cb65fd91cd514801bf91f5a3066d562f0ac4 > commit: 3d427228f7370894680580fcd0381c0349624fa1 ARM: ixp4xx: enable > multiplatform support This did not cause the problem, the bisection just landed on a commit that enabled additional configuraitons. > drivers/gpu/drm/omapdrm/dss/dsi.c: In function 'dsi_dump_dsi_irqs': >>> drivers/gpu/drm/omapdrm/dss/dsi.c:1126:1: warning: the frame size of 1060 bytes is larger than 1024 bytes [-Wframe-larger-than=] > 1126 | } I think hte problem is that struct dsi_irq_stats is just too large, at 776 bytes. The interrupts are disabled during a copy from 'dsi->irq_stats' into 'stats'. A trivial workaround would avoid the local copy and keep interrupts disabled through the entire function so it can operate directly on the source data, but that would introduce a longer time with irqs disabled, which might be bad as well. Since this is only called from a debugfs file, and reading that file is probably not performance critical itself, maybe using kmalloc on the large structure would be best. Arnd
