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authorTobias Klauser <tklauser@distanz.ch>2016-08-18 11:58:41 +0200
committerTobias Klauser <tklauser@distanz.ch>2016-09-15 18:27:48 +0200
commit5ca82e492cd88813f22d40dc2fecaaa2b3dcd51d (patch)
treebc3e6c8dd9119befffa3f51b0e7347bc423245a9 /ring_rx.h
parent93127b0f9515be4b8f1365d7670744fcac0ade16 (diff)
ifpps: Prevent division by zero
Even though it's very unlikely we ever read zero values from the cpu lines in /proc/stat, we should still protect against division by zero. Detected using UBSan. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Diffstat (limited to 'ring_rx.h')
0 files changed, 0 insertions, 0 deletions
to the BIOS, as trim_bios_range() will reserve the first page and isolate it away from memory allocators anyway. Note that just reverting 129766708 alone is not enough on v4.9-rc1+ to fix the regression on affected hardware, as this commit: ab72a27da ("x86/efi: Consolidate region mapping logic") later made the first physical frame not to be mapped anyway. Reported-by: Hanka Pavlikova <hanka@ucw.cz> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Matt Fleming <matt@codeblueprint.co.uk> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Borislav Petkov <bp@suse.de> Cc: Laura Abbott <labbott@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vojtech Pavlik <vojtech@ucw.cz> Cc: Waiman Long <waiman.long@hpe.com> Cc: linux-efi@vger.kernel.org Cc: stable@kernel.org # v4.8+ Fixes: 129766708 ("x86/efi: Only map RAM into EFI page tables if in mixed-mode") Link: http://lkml.kernel.org/r/20170127222552.22336-1-matt@codeblueprint.co.uk [ Tidied up the changelog and the comment. ] Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/usb/chipidea')