[ + akpm ] Daniel Axtens <[email protected]> writes: >>> > Check if alloc_percpu returns NULL. >>> > >>> > This was found by syzkaller both on x86 and powerpc, and the reproducer >>> > it found on powerpc is capable of hitting the issue as an unprivileged >>> > user. >>> > >>> > Fixes: 017c59c042d0 ("relay: Use per CPU constructs for the relay channel >>> > buffer pointers") >>> > Reported-by: [email protected] >>> > Reported-by: [email protected] >>> > Reported-by: [email protected] >>> > Reported-by: [email protected] >>> > Cc: Akash Goel <[email protected]> >>> > Cc: Andrew Donnellan <[email protected]> # syzkaller-ppc64 >>> > Reviewed-by: Michael Ellerman <[email protected]> >>> > Reviewed-by: Andrew Donnellan <[email protected]> >>> > Cc: [email protected] # v4.10+ >>> > Signed-off-by: Daniel Axtens <[email protected]> >>> >>> Acked-by: David Rientjes <[email protected]> >> >> It looks this one was never applied (which relates to CVE-2019-19462, >> as pointed by Guenter in [email protected]). >> >> Whas this lost or are there any issues pending? > > I'm not aware of any pending issues. > > (But, if anyone does have any objections I'm happy to revise the patch.)
It looks like kernel/relay.c is lacking a maintainer? Andrew are you able to pick this up for v5.8? It's pretty obviously correct, and has David's ack. Original is here if that helps: https://lore.kernel.org/lkml/[email protected]/ cheers
