1. 04 Nov, 2022 1 commit
  2. 01 Nov, 2022 2 commits
  3. 24 Oct, 2022 1 commit
    • Jiri Olsa's avatar
      x86/syscall: Include asm/ptrace.h in syscall_wrapper header · 9440c429
      Jiri Olsa authored
      With just the forward declaration of the 'struct pt_regs' in
      syscall_wrapper.h, the syscall stub functions:
      
        __[x64|ia32]_sys_*(struct pt_regs *regs)
      
      will have different definition of 'regs' argument in BTF data
      based on which object file they are defined in.
      
      If the syscall's object includes 'struct pt_regs' definition,
      the BTF argument data will point to a 'struct pt_regs' record,
      like:
      
        [226] STRUCT 'pt_regs' size=168 vlen=21
               'r15' type_id=1 bits_offset=0
               'r14' type_id=1 bits_offset=64
               'r13' type_id=1 bits_offset=128
        ...
      
      If not, it will point to a fwd declaration record:
      
        [15439] FWD 'pt_regs' fwd_kind=struct
      
      and make bpf tracing program hooking on those functions unable
      to access fields from 'struct pt_regs'.
      
      Include asm/ptrace.h directly in syscall_wrapper.h to make sure all
      syscalls see 'struct pt_regs' definition. This then results in BTF for
      '__*_sys_*(struct pt_regs *regs)' functions to point to the actual
      struct, not just the forward declaration.
      
        [ bp: No Fixes tag as this is not really a bug fix but "adjustment" so
          that BTF is happy. ]
      Reported-by: default avatarAkihiro HARAI <jharai0815@gmail.com>
      Signed-off-by: default avatarJiri Olsa <jolsa@kernel.org>
      Signed-off-by: default avatarBorislav Petkov <bp@suse.de>
      Acked-by: default avatarAndrii Nakryiko <andrii@kernel.org>
      Cc: <stable@vger.kernel.org> # this is needed only for BTF so kernels >= 5.15
      Link: https://lore.kernel.org/r/20221018122708.823792-1-jolsa@kernel.org
      9440c429
  4. 23 Oct, 2022 9 commits
  5. 22 Oct, 2022 21 commits
  6. 21 Oct, 2022 6 commits
    • Linus Torvalds's avatar
      Merge tag '6.1-rc1-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6 · bd8e9634
      Linus Torvalds authored
      Pull cifs fixes from Steve French:
      
       - memory leak fixes
      
       - fixes for directory leases, including an important one which fixes a
         problem noticed by git functional tests
      
       - fixes relating to missing free_xid calls (helpful for
         tracing/debugging of entry/exit into cifs.ko)
      
       - a multichannel fix
      
       - a small cleanup fix (use of list_move instead of list_del/list_add)
      
      * tag '6.1-rc1-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6:
        cifs: update internal module number
        cifs: fix memory leaks in session setup
        cifs: drop the lease for cached directories on rmdir or rename
        smb3: interface count displayed incorrectly
        cifs: Fix memory leak when build ntlmssp negotiate blob failed
        cifs: set rc to -ENOENT if we can not get a dentry for the cached dir
        cifs: use LIST_HEAD() and list_move() to simplify code
        cifs: Fix xid leak in cifs_get_file_info_unix()
        cifs: Fix xid leak in cifs_ses_add_channel()
        cifs: Fix xid leak in cifs_flock()
        cifs: Fix xid leak in cifs_copy_file_range()
        cifs: Fix xid leak in cifs_create()
      bd8e9634
    • Linus Torvalds's avatar
      Merge tag 'nfsd-6.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux · 022c028f
      Linus Torvalds authored
      Pull nfsd fixes from Chuck Lever:
       "Fixes for patches merged in v6.1"
      
      * tag 'nfsd-6.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux:
        nfsd: ensure we always call fh_verify_error tracepoint
        NFSD: unregister shrinker when nfsd_init_net() fails
      022c028f
    • Chang S. Bae's avatar
      x86/fpu: Fix copy_xstate_to_uabi() to copy init states correctly · 471f0aa7
      Chang S. Bae authored
      When an extended state component is not present in fpstate, but in init
      state, the function copies from init_fpstate via copy_feature().
      
      But, dynamic states are not present in init_fpstate because of all-zeros
      init states. Then retrieving them from init_fpstate will explode like this:
      
       BUG: kernel NULL pointer dereference, address: 0000000000000000
       ...
       RIP: 0010:memcpy_erms+0x6/0x10
        ? __copy_xstate_to_uabi_buf+0x381/0x870
        fpu_copy_guest_fpstate_to_uabi+0x28/0x80
        kvm_arch_vcpu_ioctl+0x14c/0x1460 [kvm]
        ? __this_cpu_preempt_check+0x13/0x20
        ? vmx_vcpu_put+0x2e/0x260 [kvm_intel]
        kvm_vcpu_ioctl+0xea/0x6b0 [kvm]
        ? kvm_vcpu_ioctl+0xea/0x6b0 [kvm]
        ? __fget_light+0xd4/0x130
        __x64_sys_ioctl+0xe3/0x910
        ? debug_smp_processor_id+0x17/0x20
        ? fpregs_assert_state_consistent+0x27/0x50
        do_syscall_64+0x3f/0x90
        entry_SYSCALL_64_after_hwframe+0x63/0xcd
      
      Adjust the 'mask' to zero out the userspace buffer for the features that
      are not available both from fpstate and from init_fpstate.
      
      The dynamic features depend on the compacted XSAVE format. Ensure it is
      enabled before reading XCOMP_BV in init_fpstate.
      
      Fixes: 2308ee57 ("x86/fpu/amx: Enable the AMX feature in 64-bit mode")
      Reported-by: default avatarYuan Yao <yuan.yao@intel.com>
      Suggested-by: default avatarDave Hansen <dave.hansen@intel.com>
      Signed-off-by: default avatarChang S. Bae <chang.seok.bae@intel.com>
      Signed-off-by: default avatarDave Hansen <dave.hansen@linux.intel.com>
      Tested-by: default avatarYuan Yao <yuan.yao@intel.com>
      Link: https://lore.kernel.org/lkml/BYAPR11MB3717EDEF2351C958F2C86EED95259@BYAPR11MB3717.namprd11.prod.outlook.com/
      Link: https://lkml.kernel.org/r/20221021185844.13472-1-chang.seok.bae@intel.com
      471f0aa7
    • Linus Torvalds's avatar
      Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi · ed537795
      Linus Torvalds authored
      Pull SCSI fixes from James Bottomley:
       "Two small changes, one in the lpfc driver and the other in the core.
      
        The core change is an additional footgun guard which prevents users
        from writing the wrong state to sysfs and causing a hang"
      
      * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
        scsi: lpfc: Fix memory leak in lpfc_create_port()
        scsi: core: Restrict legal sdev_state transitions via sysfs
      ed537795
    • Linus Torvalds's avatar
      Merge tag 'block-6.1-2022-10-20' of git://git.kernel.dk/linux · d4b7332e
      Linus Torvalds authored
      Pull block fixes from Jens Axboe:
      
       - NVMe pull request via Christoph:
            - fix nvme-hwmon for DMA non-cohehrent architectures (Serge Semin)
            - add a nvme-hwmong maintainer (Christoph Hellwig)
            - fix error pointer dereference in error handling (Dan Carpenter)
            - fix invalid memory reference in nvmet_subsys_attr_qid_max_show
              (Daniel Wagner)
            - don't limit the DMA segment size in nvme-apple (Russell King)
            - fix workqueue MEM_RECLAIM flushing dependency (Sagi Grimberg)
            - disable write zeroes on various Kingston SSDs (Xander Li)
      
       - fix a memory leak with block device tracing (Ye)
      
       - flexible-array fix for ublk (Yushan)
      
       - document the ublk recovery feature from this merge window
         (ZiyangZhang)
      
       - remove dead bfq variable in struct (Yuwei)
      
       - error handling rq clearing fix (Yu)
      
       - add an IRQ safety check for the cached bio freeing (Pavel)
      
       - drbd bio cloning fix (Christoph)
      
      * tag 'block-6.1-2022-10-20' of git://git.kernel.dk/linux:
        blktrace: remove unnessary stop block trace in 'blk_trace_shutdown'
        blktrace: fix possible memleak in '__blk_trace_remove'
        blktrace: introduce 'blk_trace_{start,stop}' helper
        bio: safeguard REQ_ALLOC_CACHE bio put
        block, bfq: remove unused variable for bfq_queue
        drbd: only clone bio if we have a backing device
        ublk_drv: use flexible-array member instead of zero-length array
        nvmet: fix invalid memory reference in nvmet_subsys_attr_qid_max_show
        nvmet: fix workqueue MEM_RECLAIM flushing dependency
        nvme-hwmon: kmalloc the NVME SMART log buffer
        nvme-hwmon: consistently ignore errors from nvme_hwmon_init
        nvme: add Guenther as nvme-hwmon maintainer
        nvme-apple: don't limit DMA segement size
        nvme-pci: disable write zeroes on various Kingston SSD
        nvme: fix error pointer dereference in error handling
        Documentation: document ublk user recovery feature
        blk-mq: fix null pointer dereference in blk_mq_clear_rq_mapping()
      d4b7332e
    • Linus Torvalds's avatar
      Merge tag 'io_uring-6.1-2022-10-20' of git://git.kernel.dk/linux · 294e73ff
      Linus Torvalds authored
      Pull io_uring fixes from Jens Axboe:
      
       - Fix a potential memory leak in the error handling path of io-wq setup
         (Rafael)
      
       - Kill an errant debug statement that got added in this release (me)
      
       - Fix an oops with an invalid direct descriptor with IORING_OP_MSG_RING
         (Harshit)
      
       - Remove unneeded FFS_SCM flagging (Pavel)
      
       - Remove polling off the exit path (Pavel)
      
       - Move out direct descriptor debug check to the cleanup path (Pavel)
      
       - Use the proper helper rather than open-coding cached request get
         (Pavel)
      
      * tag 'io_uring-6.1-2022-10-20' of git://git.kernel.dk/linux:
        io-wq: Fix memory leak in worker creation
        io_uring/msg_ring: Fix NULL pointer dereference in io_msg_send_fd()
        io_uring/rw: remove leftover debug statement
        io_uring: don't iopoll from io_ring_ctx_wait_and_kill()
        io_uring: reuse io_alloc_req()
        io_uring: kill hot path fixed file bitmap debug checks
        io_uring: remove FFS_SCM
      294e73ff