On Thu, Feb 02, 2023 at 12:47:07PM -0500, Sasha Levin wrote: > On Thu, Feb 02, 2023 at 12:16:52PM -0500, Sasha Levin wrote: > > On Wed, Feb 01, 2023 at 08:42:38PM -0800, Eric Biggers wrote: > > > This series backports the patchset > > > "exit: Put an upper limit on how often we can oops" > > > (https://lore.kernel.org/linux-mm/20221117233838.give.484-kees@xxxxxxxxxx/T/#u) > > > to 5.4, as recommended at > > > https://googleprojectzero.blogspot.com/2023/01/exploiting-null-dereferences-in-linux.html > > > This follows the backports to 5.10 and 5.15 which already released. > > > > > > This required backporting various prerequisite patches. > > > > > > I've tested that oops_limit and warn_limit work correctly on x86_64. > > > > Queued up all 3 backports, thanks! > > ... and proceeded to drop the 4.19 and 4.14 backports which fail to > build: > > mm/kasan/report.c: In function 'kasan_end_report': > mm/kasan/report.c:175:16: error: 'KASAN_BIT_MULTI_SHOT' undeclared (first use in this function) > 175 | if (!test_bit(KASAN_BIT_MULTI_SHOT, &kasan_flags)) Thanks, I'll fix that. I had grepped for KASAN_BIT_MULTI_SHOT to make sure those branches had it, but I didn't notice it was defined later in the file :-( - Eric
