On 1/14/19 1:23 AM, Esme wrote: > I did not yet verify the previous branches but did tune out kmemleak (CONFIG_DEBUG_MEMLEAK no longer set) as it seemed a bit obtrusive in this matter, this is what I see now (note redzone?). > /Esme > > 114.826116] ============================================================================= > [ 114.828121] BUG kmalloc-64 (Tainted: G W ): Padding overwritten. 0x000000006913c65d-0x000000006e410492 > [ 114.830551] ----------------------------------------------------------------------------- > [ 114.830551] > [ 114.832755] INFO: Slab 0x0000000054f47c55 objects=19 used=19 fp=0x (null) flags=0x1fffc0000010200 > [ 114.835063] CPU: 0 PID: 6310 Comm: x Tainted: G B W 5.0.0-rc2 #15 > [ 114.836829] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.11.1-1ubuntu1 04/01/2014 > [ 114.838847] Call Trace: > [ 114.839497] dump_stack+0x1d8/0x2c6 > [ 114.840274] ? dump_stack_print_info.cold.1+0x20/0x20 > [ 114.841402] slab_err+0xab/0xcf > [ 114.842103] ? __asan_report_load1_noabort+0x14/0x20 > [ 114.843244] ? memchr_inv+0x2c1/0x330 > [ 114.844059] slab_pad_check.part.50.cold.87+0x27/0x81 Confused again. Those slab_pad_check() looks like only with SLUB, but you said you used SLAB. What else did you change?