On 3/3/25 14:57, Matthew Wilcox wrote:
On Mon, Mar 03, 2025 at 12:06:18PM +0100, Hannes Reinecke wrote:
On 3/3/25 08:48, Hannes Reinecke wrote:
On 2/28/25 11:47, Hannes Reinecke wrote:
Hi Sagi,
enabling TLS on latest linus tree reliably crashes my system:
[ 487.018058] ------------[ cut here ]------------
[ 487.024046] WARNING: CPU: 9 PID: 6159 at mm/slub.c:4719
free_large_kmalloc+0x15/0xa0
[ .. ]
Haven't found a culprit for that one for now, started bisecting.
Just wanted to report that as a heads-up, maybe you have some idea.
bisect is pointing to
9aec2fb0fd5e ("slab: allocate frozen pages")
and, indeed, reverting this patch on top of linus current resolves
the issue.
Sorry Matthew.
It's getting even worse; after reverting above patch I'm getting a crash
here:
If you revert that, you also need to revert 8c6e2d122b71.
But let me dig into the original problem. The fact that it's
kmalloc_large might be a clue.
Let me know if you need more details.
Incidentally, there's a blktest unit for TLS now:
https://github.com/osandov/blktests/pull/158
which should allow you to recreate the issue locally.
Cheers,
Hannes
--
Dr. Hannes Reinecke Kernel Storage Architect
hare@xxxxxxxx +49 911 74053 688
SUSE Software Solutions GmbH, Frankenstr. 146, 90461 Nürnberg
HRB 36809 (AG Nürnberg), GF: I. Totev, A. McDonald, W. Knoblich
