SMB3: Fix regression in server reconnect detection

[David Coronel]

Request to pull this patch from upstream into the next 4.15 kernel update:

https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=b2adf22fdfba85a6701c481faccdbbb3a418ccfc

This fixes a regression in SMB 2/3 reconnect detection. The fix has been backported to stable updates for 4.9.x, 4.14.x, 4.16.x and 4.17.x. But EOL kernels 4.10.x, 4.11.x, 4.12.x, 4.13.x and 4.15.x are also impacted.

Highest priority is fixing linux-azure but would recommend cherry-picking this patch for all affected kernels.

[Marcelo Cerri (mhcerri)]

https://lists.ubuntu.com/archives/kernel-team/2018-August/094644.html

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 1786110

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

[Brad Figg (brad-figg)]

This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-bionic' to 'verification-done-bionic'. If the problem still exists, change the tag 'verification-needed-bionic' to 'verification-failed-bionic'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 4.15.0-34.37

---------------
linux (4.15.0-34.37) bionic; urgency=medium

  * linux: 4.15.0-34.37 -proposed tracker (LP: #1788744)

  * Bionic update: upstream stable patchset 2018-08-09 (LP: #1786352)
    - MIPS: c-r4k: Fix data corruption related to cache coherence
    - MIPS: ptrace: Expose FIR register through FP regset
    - MIPS: Fix ptrace(2) PTRACE_PEEKUSR and PTRACE_POKEUSR accesses to o32 FGRs
    - KVM: Fix spelling mistake: "cop_unsuable" -> "cop_unusable"
    - affs_lookup(): close a race with affs_remove_link()
    - fs: don't scan the inode cache before SB_BORN is set
    - aio: fix io_destroy(2) vs. lookup_ioctx() race
    - ALSA: timer: Fix pause event notification
    - do d_instantiate/unlock_new_inode combinations safely
    - mmc: sdhci-iproc: remove hard coded mmc cap 1.8v
    - mmc: sdhci-iproc: fix 32bit writes for TRANSFER_MODE register
    - mmc: sdhci-iproc: add SDHCI_QUIRK2_HOST_OFF_CARD_ON for cygnus
    - libata: Blacklist some Sandisk SSDs for NCQ
    - libata: blacklist Micron 500IT SSD with MU01 firmware
    - xen-swiotlb: fix the check condition for xen_swiotlb_free_coherent
    - drm/vmwgfx: Fix 32-bit VMW_PORT_HB_[IN|OUT] macros
    - arm64: lse: Add early clobbers to some input/output asm operands
    - powerpc/64s: Clear PCR on boot
    - IB/hfi1: Use after free race condition in send context error path
    - IB/umem: Use the correct mm during ib_umem_release
    - idr: fix invalid ptr dereference on item delete
    - Revert "ipc/shm: Fix shmat mmap nil-page protection"
    - ipc/shm: fix shmat() nil address after round-down when remapping
    - mm/kasan: don't vfree() nonexistent vm_area
    - kasan: free allocated shadow memory on MEM_CANCEL_ONLINE
    - kasan: fix memory hotplug during boot
    - kernel/sys.c: fix potential Spectre v1 issue
    - KVM: s390: vsie: fix < 8k check for the itdba
    - KVM: x86: Update cpuid properly when CR4.OSXAVE or CR4.PKE is changed
    - kvm: x86: IA32_ARCH_CAPABILITIES is always supported
    - powerpc/64s: Improve RFI L1-D cache flush fallback
    - powerpc/pseries: Restore default security feature flags on setup
    - powerpc/64s: Fix section mismatch warnings from setup_rfi_flush()
    - MIPS: generic: Fix machine compatible matching
    - mac80211: mesh: fix wrong mesh TTL offset calculation
    - ARC: Fix malformed ARC_EMUL_UNALIGNED default
    - ptr_ring: prevent integer overflow when calculating size
    - arm64: dts: rockchip: fix rock64 gmac2io stability issues
    - arm64: dts: rockchip: correct ep-gpios for rk3399-sapphire
    - libata: Fix compile warning with ATA_DEBUG enabled
    - selftests: sync: missing CFLAGS while compiling
    - selftest/vDSO: fix O=
    - selftests: pstore: Adding config fragment CONFIG_PSTORE_RAM=m
    - selftests: memfd: add config fragment for fuse
    - ARM: OMAP2+: timer: fix a kmemleak caused in omap_get_timer_dt
    - ARM: OMAP3: Fix prm wake interrupt for resume
    - ARM: OMAP2+: Fix sar_base inititalization for HS omaps
    - ARM: OMAP1: clock: Fix debugfs_create_*() usage
    - tls: retrun the correct IV in getsockopt
    - xhci: workaround for AMD Promontory disabled ports w...

[Andy Whitcroft (apw)]

This bug was erroneously marked for verification in bionic; verification is not required and verification-needed-bionic is being removed.