1. 13 Jun, 2024 1 commit
    • GUO Zihua's avatar
      ima: Avoid blocking in RCU read-side critical section · 9a95c5bf
      GUO Zihua authored
      A panic happens in ima_match_policy:
      
      BUG: unable to handle kernel NULL pointer dereference at 0000000000000010
      PGD 42f873067 P4D 0
      Oops: 0000 [#1] SMP NOPTI
      CPU: 5 PID: 1286325 Comm: kubeletmonit.sh
      Kdump: loaded Tainted: P
      Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),
                     BIOS 0.0.0 02/06/2015
      RIP: 0010:ima_match_policy+0x84/0x450
      Code: 49 89 fc 41 89 cf 31 ed 89 44 24 14 eb 1c 44 39
            7b 18 74 26 41 83 ff 05 74 20 48 8b 1b 48 3b 1d
            f2 b9 f4 00 0f 84 9c 01 00 00 <44> 85 73 10 74 ea
            44 8b 6b 14 41 f6 c5 01 75 d4 41 f6 c5 02 74 0f
      RSP: 0018:ff71570009e07a80 EFLAGS: 00010207
      RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000200
      RDX: ffffffffad8dc7c0 RSI: 0000000024924925 RDI: ff3e27850dea2000
      RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffffabfce739
      R10: ff3e27810cc42400 R11: 0000000000000000 R12: ff3e2781825ef970
      R13: 00000000ff3e2785 R14: 000000000000000c R15: 0000000000000001
      FS:  00007f5195b51740(0000)
      GS:ff3e278b12d40000(0000) knlGS:0000000000000000
      CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
      CR2: 0000000000000010 CR3: 0000000626d24002 CR4: 0000000000361ee0
      DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
      DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
      Call Trace:
       ima_get_action+0x22/0x30
       process_measurement+0xb0/0x830
       ? page_add_file_rmap+0x15/0x170
       ? alloc_set_pte+0x269/0x4c0
       ? prep_new_page+0x81/0x140
       ? simple_xattr_get+0x75/0xa0
       ? selinux_file_open+0x9d/0xf0
       ima_file_check+0x64/0x90
       path_openat+0x571/0x1720
       do_filp_open+0x9b/0x110
       ? page_counter_try_charge+0x57/0xc0
       ? files_cgroup_alloc_fd+0x38/0x60
       ? __alloc_fd+0xd4/0x250
       ? do_sys_open+0x1bd/0x250
       do_sys_open+0x1bd/0x250
       do_syscall_64+0x5d/0x1d0
       entry_SYSCALL_64_after_hwframe+0x65/0xca
      
      Commit c7423dbd ("ima: Handle -ESTALE returned by
      ima_filter_rule_match()") introduced call to ima_lsm_copy_rule within a
      RCU read-side critical section which contains kmalloc with GFP_KERNEL.
      This implies a possible sleep and violates limitations of RCU read-side
      critical sections on non-PREEMPT systems.
      
      Sleeping within RCU read-side critical section might cause
      synchronize_rcu() returning early and break RCU protection, allowing a
      UAF to happen.
      
      The root cause of this issue could be described as follows:
      |	Thread A	|	Thread B	|
      |			|ima_match_policy	|
      |			|  rcu_read_lock	|
      |ima_lsm_update_rule	|			|
      |  synchronize_rcu	|			|
      |			|    kmalloc(GFP_KERNEL)|
      |			|      sleep		|
      ==> synchronize_rcu returns early
      |  kfree(entry)		|			|
      |			|    entry = entry->next|
      ==> UAF happens and entry now becomes NULL (or could be anything).
      |			|    entry->action	|
      ==> Accessing entry might cause panic.
      
      To fix this issue, we are converting all kmalloc that is called within
      RCU read-side critical section to use GFP_ATOMIC.
      
      Fixes: c7423dbd ("ima: Handle -ESTALE returned by ima_filter_rule_match()")
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarGUO Zihua <guozihua@huawei.com>
      Acked-by: default avatarJohn Johansen <john.johansen@canonical.com>
      Reviewed-by: default avatarMimi Zohar <zohar@linux.ibm.com>
      Reviewed-by: default avatarCasey Schaufler <casey@schaufler-ca.com>
      [PM: fixed missing comment, long lines, !CONFIG_IMA_LSM_RULES case]
      Signed-off-by: default avatarPaul Moore <paul@paul-moore.com>
      9a95c5bf
  2. 09 Jun, 2024 5 commits
    • Linus Torvalds's avatar
      Linux 6.10-rc3 · 83a7eefe
      Linus Torvalds authored
      83a7eefe
    • Linus Torvalds's avatar
      Merge tag 'perf-tools-fixes-for-v6.10-2-2024-06-09' of... · b8481381
      Linus Torvalds authored
      Merge tag 'perf-tools-fixes-for-v6.10-2-2024-06-09' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools
      
      Pull perf tools fixes from Arnaldo Carvalho de Melo:
      
       - Update copies of kernel headers, which resulted in support for the
         new 'mseal' syscall, SUBVOL statx return mask bit, RISC-V and PPC
         prctls, fcntl's DUPFD_QUERY, POSTED_MSI_NOTIFICATION IRQ vector,
         'map_shadow_stack' syscall for x86-32.
      
       - Revert perf.data record memory allocation optimization that ended up
         causing a regression, work is being done to re-introduce it in the
         next merge window.
      
       - Fix handling of minimal vmlinux.h file used with BPF's CO-RE when
         interrupting the build.
      
      * tag 'perf-tools-fixes-for-v6.10-2-2024-06-09' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools:
        perf bpf: Fix handling of minimal vmlinux.h file when interrupting the build
        Revert "perf record: Reduce memory for recording PERF_RECORD_LOST_SAMPLES event"
        tools headers arm64: Sync arm64's cputype.h with the kernel sources
        tools headers uapi: Sync linux/stat.h with the kernel sources to pick STATX_SUBVOL
        tools headers UAPI: Update i915_drm.h with the kernel sources
        tools headers UAPI: Sync kvm headers with the kernel sources
        tools arch x86: Sync the msr-index.h copy with the kernel sources
        tools headers: Update the syscall tables and unistd.h, mostly to support the new 'mseal' syscall
        perf trace beauty: Update the arch/x86/include/asm/irq_vectors.h copy with the kernel sources to pick POSTED_MSI_NOTIFICATION
        perf beauty: Update copy of linux/socket.h with the kernel sources
        tools headers UAPI: Sync fcntl.h with the kernel sources to pick F_DUPFD_QUERY
        tools headers UAPI: Sync linux/prctl.h with the kernel sources
        tools include UAPI: Sync linux/stat.h with the kernel sources
      b8481381
    • Linus Torvalds's avatar
      Merge tag 'edac_urgent_for_v6.10_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras · 637c2dfc
      Linus Torvalds authored
      Pull EDAC fixes from Borislav Petkov:
      
       - Convert PCI core error codes to proper error numbers since latter get
         propagated all the way up to the module loading functions
      
      * tag 'edac_urgent_for_v6.10_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras:
        EDAC/igen6: Convert PCIBIOS_* return codes to errnos
        EDAC/amd64: Convert PCIBIOS_* return codes to errnos
      637c2dfc
    • Linus Torvalds's avatar
      Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux · 771ed661
      Linus Torvalds authored
      Pull clk fix from Stephen Boyd:
       "One fix for the SiFive PRCI clocks so that the device boots again.
      
        This driver was registering clkdev lookups that were always going to
        be useless. This wasn't a problem until clkdev started returning an
        error in these cases, causing this driver to fail probe, and thus boot
        to fail because clks are essential for most drivers. The fix is
        simple, don't use clkdev because this is a DT based system where
        clkdev isn't used"
      
      * tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
        clk: sifive: Do not register clkdevs for PRCI clocks
      771ed661
    • Linus Torvalds's avatar
      Merge tag '6.10-rc2-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6 · c5dbc2ed
      Linus Torvalds authored
      Pull smb client fixes from Steve French:
       "Two small smb3 client fixes:
      
         - fix deadlock in umount
      
         - minor cleanup due to netfs change"
      
      * tag '6.10-rc2-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
        cifs: Don't advance the I/O iterator before terminating subrequest
        smb: client: fix deadlock in smb2_find_smb_tcon()
      c5dbc2ed
  3. 08 Jun, 2024 8 commits
    • Linus Torvalds's avatar
      Merge tag 'for-linus-2024060801' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid · 061d1af7
      Linus Torvalds authored
      Pull HID fixes from Benjamin Tissoires:
      
       - fix potential read out of bounds in hid-asus (Andrew Ballance)
      
       - fix endian-conversion on little endian systems in intel-ish-hid (Arnd
         Bergmann)
      
       - A couple of new input event codes (Aseda Aboagye)
      
       - errors handling fixes in hid-nvidia-shield (Chen Ni), hid-nintendo
         (Christophe JAILLET), hid-logitech-dj (José Expósito)
      
       - current leakage fix while the device is in suspend on a i2c-hid
         laptop (Johan Hovold)
      
       - other assorted smaller fixes and device ID / quirk entry additions
      
      * tag 'for-linus-2024060801' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid:
        HID: Ignore battery for ELAN touchscreens 2F2C and 4116
        HID: i2c-hid: elan: fix reset suspend current leakage
        dt-bindings: HID: i2c-hid: elan: add 'no-reset-on-power-off' property
        dt-bindings: HID: i2c-hid: elan: add Elan eKTH5015M
        dt-bindings: HID: i2c-hid: add dedicated Ilitek ILI2901 schema
        input: Add support for "Do Not Disturb"
        input: Add event code for accessibility key
        hid: asus: asus_report_fixup: fix potential read out of bounds
        HID: logitech-hidpp: add missing MODULE_DESCRIPTION() macro
        HID: intel-ish-hid: fix endian-conversion
        HID: nintendo: Fix an error handling path in nintendo_hid_probe()
        HID: logitech-dj: Fix memory leak in logi_dj_recv_switch_to_dj_mode()
        HID: core: remove unnecessary WARN_ON() in implement()
        HID: nvidia-shield: Add missing check for input_ff_create_memless
        HID: intel-ish-hid: Fix build error for COMPILE_TEST
      061d1af7
    • Linus Torvalds's avatar
      Merge tag 'kbuild-fixes-v6.10-2' of... · 329f70c5
      Linus Torvalds authored
      Merge tag 'kbuild-fixes-v6.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
      
      Pull Kbuild fixes from Masahiro Yamada:
      
       - Fix the initial state of the save button in 'make gconfig'
      
       - Improve the Kconfig documentation
      
       - Fix a Kconfig bug regarding property visibility
      
       - Fix build breakage for systems where 'sed' is not installed in /bin
      
       - Fix a false warning about missing MODULE_DESCRIPTION()
      
      * tag 'kbuild-fixes-v6.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
        modpost: do not warn about missing MODULE_DESCRIPTION() for vmlinux.o
        kbuild: explicitly run mksysmap as sed script from link-vmlinux.sh
        kconfig: remove wrong expr_trans_bool()
        kconfig: doc: document behavior of 'select' and 'imply' followed by 'if'
        kconfig: doc: fix a typo in the note about 'imply'
        kconfig: gconf: give a proper initial state to the Save button
        kconfig: remove unneeded code for user-supplied values being out of range
      329f70c5
    • Linus Torvalds's avatar
      Merge tag 'media/v6.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media · 1e7ccdd3
      Linus Torvalds authored
      Pull media fixes from Mauro Carvalho Chehab:
      
       - fixes for the new ipu6 driver (and related fixes to mei csi driver)
      
       - fix a double debugfs remove logic at mgb4 driver
      
       - a documentation fix
      
      * tag 'media/v6.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
        media: intel/ipu6: add csi2 port sanity check in notifier bound
        media: intel/ipu6: update the maximum supported csi2 port number to 6
        media: mei: csi: Warn less verbosely of a missing device fwnode
        media: mei: csi: Put the IPU device reference
        media: intel/ipu6: fix the buffer flags caused by wrong parentheses
        media: intel/ipu6: Fix an error handling path in isys_probe()
        media: intel/ipu6: Move isys_remove() close to isys_probe()
        media: intel/ipu6: Fix some redundant resources freeing in ipu6_pci_remove()
        media: Documentation: v4l: Fix ACTIVE route flag
        media: mgb4: Fix double debugfs remove
      1e7ccdd3
    • Linus Torvalds's avatar
      Merge tag 'irq-urgent-2024-06-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 36714d69
      Linus Torvalds authored
      Pull irq fixes from Ingo Molnar:
      
       - Fix possible memory leak the riscv-intc irqchip driver load failures
      
       - Fix boot crash in the sifive-plic irqchip driver caused by recently
         changed boot initialization order
      
       - Fix race condition in the gic-v3-its irqchip driver
      
      * tag 'irq-urgent-2024-06-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        irqchip/gic-v3-its: Fix potential race condition in its_vlpi_prop_update()
        irqchip/sifive-plic: Chain to parent IRQ after handlers are ready
        irqchip/riscv-intc: Prevent memory leak when riscv_intc_init_common() fails
      36714d69
    • Linus Torvalds's avatar
      Merge tag 'x86-urgent-2024-06-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 7cedb020
      Linus Torvalds authored
      Pull x86 fixes from Ingo Molnar:
       "Miscellaneous fixes:
      
         - Fix kexec() crash if call depth tracking is enabled
      
         - Fix SMN reads on inaccessible registers on certain AMD systems"
      
      * tag 'x86-urgent-2024-06-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        x86/amd_nb: Check for invalid SMN reads
        x86/kexec: Fix bug with call depth tracking
      7cedb020
    • Linus Torvalds's avatar
      Merge tag 'perf-urgent-2024-06-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 7cec2e16
      Linus Torvalds authored
      Pull perf event fix from Ingo Molnar:
       "Fix race between perf_event_free_task() and perf_event_release_kernel()
        that can result in missed wakeups and hung tasks"
      
      * tag 'perf-urgent-2024-06-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        perf/core: Fix missing wakeup when waiting for context reference
      7cec2e16
    • Linus Torvalds's avatar
      Merge tag 'locking-urgent-2024-06-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · bbc5332b
      Linus Torvalds authored
      Pull locking doc fix from Ingo Molnar:
       "Fix typos in the kerneldoc of some of the atomic APIs"
      
      * tag 'locking-urgent-2024-06-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        locking/atomic: scripts: fix ${atomic}_sub_and_test() kerneldoc
      bbc5332b
    • Linus Torvalds's avatar
      Merge tag 'mm-hotfixes-stable-2024-06-07-15-24' of... · dc772f82
      Linus Torvalds authored
      Merge tag 'mm-hotfixes-stable-2024-06-07-15-24' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
      
      Pull misc fixes from Andrew Morton:
       "14 hotfixes, 6 of which are cc:stable.
      
        All except the nilfs2 fix affect MM and all are singletons - see the
        chagelogs for details"
      
      * tag 'mm-hotfixes-stable-2024-06-07-15-24' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
        nilfs2: fix nilfs_empty_dir() misjudgment and long loop on I/O errors
        mm: fix xyz_noprof functions calling profiled functions
        codetag: avoid race at alloc_slab_obj_exts
        mm/hugetlb: do not call vma_add_reservation upon ENOMEM
        mm/ksm: fix ksm_zero_pages accounting
        mm/ksm: fix ksm_pages_scanned accounting
        kmsan: do not wipe out origin when doing partial unpoisoning
        vmalloc: check CONFIG_EXECMEM in is_vmalloc_or_module_addr()
        mm: page_alloc: fix highatomic typing in multi-block buddies
        nilfs2: fix potential kernel bug due to lack of writeback flag waiting
        memcg: remove the lockdep assert from __mod_objcg_mlstate()
        mm: arm64: fix the out-of-bounds issue in contpte_clear_young_dirty_ptes
        mm: huge_mm: fix undefined reference to `mthp_stats' for CONFIG_SYSFS=n
        mm: drop the 'anon_' prefix for swap-out mTHP counters
      dc772f82
  4. 07 Jun, 2024 23 commits
  5. 06 Jun, 2024 3 commits