On 09.07.19 11:52, Kinky Nekoboi wrote:
Tested it both with microcode and without microcode. It doesent changes the behaviour.
Did you also test it w/ recent mainline kernel ? (w/ CONFIG_DEBUG_SPINLOCK enabled)
(personally, I've long given up walking through Debian's kernel mess, just use upstream 'make deb-pkg' directly)
This particular bug smells like a kernel bug to be:
[ 0.989765] BUG: unable to handle kernel NULL pointer dereference at
00000000 <snip>
[ 1.104206] Call Trace: [ 1.106638] deactivate_slab.isra.71+0x2d2/0x630 [ 1.111232] ? bootstrap+0x1f/0x12c [ 1.114693] ? kmem_cache_alloc+0x1b8/0x1c0 [ 1.118854] bootstrap+0x66/0x12c [ 1.122148] kmem_cache_init+0x8c/0x145 [ 1.125962] start_kernel+0x2a6/0x52c [ 1.129602] secondary_startup_64+0xa4/0xb0 [ 1.133759] Modules linked in: [ 1.136791] CR2: 0000000000000000 [ 1.140094] ---[ end trace a6e00f6a2ecfb185 ]--- [ 1.144679] RIP: 0010:_raw_spin_lock+0xc/0x20 [ 1.149011] Code: 01 00 00 75 05 48 89 d8 5b c3 e8 1f f7 9a ff eb
f4 66 66 2b
--mtx