29.01.2024 19:20, Greg KH wrote:
On Mon, Jan 29, 2024 at 12:17:45PM +0300, kovalev@xxxxxxxxxxxx wrote:
Syzkaller hit 'WARNING in ftrace_verify_code' bug.
This bug is not a vulnerability and is reproduced only when running
with root privileges on stable 5.10 kernel.
What about 5.15.y? We can't take a patch for older kernels and not for
newer ones, right?
Indeed, this patch was not backported at 5.15.
I fixed it, successfully tested it on the 5.15.148 kernel and sent the
patch [1]
However, at the time of the kernel build, I noticed a compiler warning
about an unused "*tmp" variable,
that I fixed in the patch for 5.15, but remained in this patch 5.10:
...
+ void *new, *tmp;
...
need to fix on
...
+ void *new;
...
Therefore, I resend the patch with a fix (deleted the unused tmp
pointer). [2]
[1]
https://lore.kernel.org/bpf/20240129180108.284057-1-kovalev@xxxxxxxxxxxx/T/#u
[2]
https://lore.kernel.org/bpf/20240129183120.284801-1-kovalev@xxxxxxxxxxxx/T/#u
--
Regards,
Vasiliy Kovalev
