gcc-4.3+ may mis-compile the kernel without -fwrapv

Bug #348015 reported by Kees Cook on 2009-03-24
2
Affects Status Importance Assigned to Milestone
linux (Ubuntu)
High
Tim Gardner
Nominated for Intrepid by Stefan Bader
Jaunty
High
Tim Gardner

Bug Description

gcc-4.3+ may mis-compile certain parts of the kernel.

http://bugzilla.kernel.org/show_bug.cgi?id=12597

commits (from email from smb):
68df3755e383e6fecf2354a67b08f92f18536594
d0115552cdb0b4d4146975889fee2e9355515c4b

Tim Gardner (timg-tpi) wrote :
Changed in linux (Ubuntu Jaunty):
assignee: nobody → timg-tpi
importance: Undecided → High
milestone: none → ubuntu-9.04
status: New → Fix Committed
Matt Zimmerman (mdz) on 2009-03-25
summary: - possible compiler glitches
+ gcc-4.3+ may mis-compile the kernel without -fwrapv
Launchpad Janitor (janitor) wrote :
Download full text (3.5 KiB)

This bug was fixed in the package linux - 2.6.28-11.38

---------------
linux (2.6.28-11.38) jaunty; urgency=low

  [ Brad Figg ]

  * When AppArmor is configured, securityfs must be as well.
    - LP: #344370
  * ARM: Enable AA with SECURITYFS for imx51
    - LP: #344370

  [ Bryan Wu ]

  * Add 3 missing files to prerm remove file list
    - LP: #345623

  [ Daniel T Chen ]

  * SAUCE: (drop after 2.6.28) Don't trust hw-ptr blindly
    - LP: #330814
  * SAUCE: (drop after 2.6.28) Apply further pcm_lib updates for hw_ptr
    - LP: #330814

  [ Ike Panhc ]

  * Copy header files for various kernel media driver
    - LP: #322732

  [ Tim Gardner ]

  * Revert "Fix the VFP handling on the Feroceon CPU"
    Only applied to mv78xx0 ARM flavour.
  * Enabled drivers/staging/at76_usb
    - LP: #152626

  [ <email address hidden> ]

  * SAUCE: ipw2200: Enable LED by default
    - LP: #21367
  * SAUCE: wistron_btns: support Prestigio Wifi RF kill button over suspend
    - LP: #346586

  [ Upstream Kernel Changes ]

  * Build fix for __early_pfn_to_nid() undefined link error
  * Fix misreporting of #cores as #hyperthreads for Q9550
  * eventfd: remove fput() call from possible IRQ context
  * S390: __div64_31 broken for CONFIG_MARCH_G5
  * ALSA: Fix vunmap and free order in snd_free_sgbuf_pages()
  * ALSA: mixart, fix lock imbalance
  * ALSA: pcm_oss, fix locking typo
  * ALSA: hda - Fix DMA mask for ATI controllers
  * ALSA: hda - Workaround for buggy DMA position on ATI controllers
  * ALSA: opl3sa2 - Fix NULL dereference when suspending snd_opl3sa2
  * nfsd: nfsd should drop CAP_MKNOD for non-root
  * NFSD: provide encode routine for OP_OPENATTR
  * dm ioctl: validate name length when renaming
  * dm io: respect BIO_MAX_PAGES limit
  * dm crypt: fix kcryptd_async_done parameter
  * dm crypt: wait for endio to complete before destruction
  * ata_piix: add workaround for Samsung DB-P70
  * V4L/DVB (10218): cx23885: Fix Oops for mixed install of analog and
    digital only cards
  * thinkpad-acpi: fix module autoloading for older models
  * Add '-fwrapv' to gcc CFLAGS
  * Move cc-option to below arch-specific setup
  * USB: storage: Unusual USB device Prolific 2507 variation added
  * USB: Add Vendor/Product ID for new CDMA U727 to option driver
  * USB: option.c: add ZTE 622 modem device
  * USB: Add device id for Option GTM380 to option driver
  * USB: Option: let cdc-acm handle Sony Ericsson F3507g / Dell 5530
  * USB: Updated unusual-devs entry for USB mass storage on Nokia 6233
  * USB: unusual_devs: Add support for GI 0431 SD-Card interface
  * USB: serial: add FTDI USB/Serial converter devices
  * USB: serial: ftdi: enable UART detection on gnICE JTAG adaptors
    blacklist interface0
  * USB: serial: new cp2101 device id
  * USB: usbtmc: fix stupid bug in open()
  * USB: usbtmc: add protocol 1 support
  * USB: usbfs: keep async URBs until the device file is closed
  * USB: EHCI: expedite unlinks when the root hub is suspended
  * USB: EHCI: Fix isochronous URB leak
  * powerpc: Remove extra semicolon in fsl_soc.c
  * menu: fix embedded menu snafu
  * Linux 2.6.28.9
  * Add '-fwrapv' to gcc CFLAGS
    - LP: #348015
  * Move cc-option to below arch-s...

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Changed in linux:
status: Fix Committed → Fix Released
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