On 3/24/21 9:55 AM, Christoph Hellwig wrote: > On Tue, Mar 23, 2021 at 07:04:31PM -0700, Stephen Boyd wrote: >> x5 : 0000000000000000 x4 : 0000000000000001 >> x3 : 0000000000000008 x2 : ffffff93fef25a70 >> x1 : ffffff93fef15788 x0 : ffffffe3622352e0 >> Call trace: >> lkdtm_WARNING+0x28/0x30 [lkdtm ed5019fdf5e53be37cb1ba7899292d7e143b259e] >> direct_entry+0x16c/0x1b4 [lkdtm ed5019fdf5e53be37cb1ba7899292d7e143b259e] > Yikes. No, please do not make the backtraces a complete mess for > something that serves absolutely no need. Would a "verbose" flag be acceptable solution? Something like write 1 to /sys/kernel/debug/verbose_stack to get the extra info. I think I see a need for it.