1. 16 Nov, 2019 5 commits
    • Salil Mehta's avatar
      net: hns3: cleanup of stray struct hns3_link_mode_mapping · b696083d
      Salil Mehta authored
      
      
      This patch cleans-up the stray left over code. It has no
      functionality impact.
      
      Signed-off-by: default avatarSalil Mehta <salil.mehta@huawei.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      b696083d
    • Chuhong Yuan's avatar
      net: gemini: add missed free_netdev · 18d647ae
      Chuhong Yuan authored
      
      
      This driver forgets to free allocated netdev in remove like
      what is done in probe failure.
      Add the free to fix it.
      
      Signed-off-by: default avatarChuhong Yuan <hslester96@gmail.com>
      Reviewed-by: default avatarLinus Walleij <linus.walleij@linaro.org>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      18d647ae
    • Nishad Kamdar's avatar
      net: stmmac: Use the correct style for SPDX License Identifier · acb9bdc1
      Nishad Kamdar authored
      This patch corrects the SPDX License Identifier style in
      header files related to STMicroelectronics based Multi-Gigabit
      Ethernet driver. For C header files Documentation/process/license-rules.rst
      mandates C-like comments (opposed to C source files where
      C++ style should be used).
      
      Changes made by using a script provided by Joe Perches here:
      https://lkml.org/lkml/2019/2/7/46
      
      .
      
      Suggested-by: default avatarJoe Perches <joe@perches.com>
      Signed-off-by: default avatarNishad Kamdar <nishadkamdar@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      acb9bdc1
    • Nishad Kamdar's avatar
      octeontx2-af: Use the correct style for SPDX License Identifier · 26b3f3cc
      Nishad Kamdar authored
      This patch corrects the SPDX License Identifier style in
      header files related to Marvell OcteonTX2 network devices.
      It uses an expilict block comment for the SPDX License
      Identifier.
      
      Changes made by using a script provided by Joe Perches here:
      https://lkml.org/lkml/2019/2/7/46
      
      .
      
      Suggested-by: default avatarJoe Perches <joe@perches.com>
      Signed-off-by: default avatarNishad Kamdar <nishadkamdar@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      26b3f3cc
    • David Hildenbrand's avatar
      mm/memory_hotplug: fix try_offline_node() · 2c91f8fc
      David Hildenbrand authored
      try_offline_node() is pretty much broken right now:
      
       - The node span is updated when onlining memory, not when adding it. We
         ignore memory that was mever onlined. Bad.
      
       - We touch possible garbage memmaps. The pfn_to_nid(pfn) can easily
         trigger a kernel panic. Bad for memory that is offline but also bad
         for subsection hotadd with ZONE_DEVICE, whereby the memmap of the
         first PFN of a section might contain garbage.
      
       - Sections belonging to mixed nodes are not properly considered.
      
      As memory blocks might belong to multiple nodes, we would have to walk
      all pageblocks (or at least subsections) within present sections.
      However, we don't have a way to identify whether a memmap that is not
      online was initialized (relevant for ZONE_DEVICE).  This makes things
      more complicated.
      
      Luckily, we can piggy pack on the node span and the nid stored in memory
      blocks.  Currently, the node span is grown when calling
      move_pfn_range_to_zone() - e.g., when onlining memory, and shrunk when
      removing memory, before calling try_offline_node().  Sysfs links are
      created via link_mem_sections(), e.g., during boot or when adding
      memory.
      
      If the node still spans memory or if any memory block belongs to the
      nid, we don't set the node offline.  As memory blocks that span multiple
      nodes cannot get offlined, the nid stored in memory blocks is reliable
      enough (for such online memory blocks, the node still spans the memory).
      
      Introduce for_each_memory_block() to efficiently walk all memory blocks.
      
      Note: We will soon stop shrinking the ZONE_DEVICE zone and the node span
      when removing ZONE_DEVICE memory to fix similar issues (access of
      garbage memmaps) - until we have a reliable way to identify whether
      these memmaps were properly initialized.  This implies later, that once
      a node had ZONE_DEVICE memory, we won't be able to set a node offline -
      which should be acceptable.
      
      Since commit f1dd2cd1 ("mm, memory_hotplug: do not associate
      hotadded memory to zones until online") memory that is added is not
      assoziated with a zone/node (memmap not initialized).  The introducing
      commit 60a5a19e ("memory-hotplug: remove sysfs file of node")
      already missed that we could have multiple nodes for a section and that
      the zone/node span is updated when onlining pages, not when adding them.
      
      I tested this by hotplugging two DIMMs to a memory-less and cpu-less
      NUMA node.  The node is properly onlined when adding the DIMMs.  When
      removing the DIMMs, the node is properly offlined.
      
      Masayoshi Mizuma reported:
      
      : Without this patch, memory hotplug fails as panic:
      :
      :  BUG: kernel NULL pointer dereference, address: 0000000000000000
      :  ...
      :  Call Trace:
      :   remove_memory_block_devices+0x81/0xc0
      :   try_remove_memory+0xb4/0x130
      :   __remove_memory+0xa/0x20
      :   acpi_memory_device_remove+0x84/0x100
      :   acpi_bus_trim+0x57/0x90
      :   acpi_bus_trim+0x2e/0x90
      :   acpi_device_hotplug+0x2b2/0x4d0
      :   acpi_hotplug_work_fn+0x1a/0x30
      :   process_one_work+0x171/0x380
      :   worker_thread+0x49/0x3f0
      :   kthread+0xf8/0x130
      :   ret_from_fork+0x35/0x40
      
      [david@redhat.com: v3]
        Link: http://lkml.kernel.org/r/20191102120221.7553-1-david@redhat.com
      Link: http://lkml.kernel.org/r/20191028105458.28320-1-david@redhat.com
      Fixes: 60a5a19e ("memory-hotplug: remove sysfs file of node")
      Fixes: f1dd2cd1 ("mm, memory_hotplug: do not associate hotadded memory to zones until online") # visiable after d0dc12e8
      
      
      Signed-off-by: default avatarDavid Hildenbrand <david@redhat.com>
      Tested-by: default avatarMasayoshi Mizuma <m.mizuma@jp.fujitsu.com>
      Cc: Tang Chen <tangchen@cn.fujitsu.com>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: "Rafael J. Wysocki" <rafael@kernel.org>
      Cc: Keith Busch <keith.busch@intel.com>
      Cc: Jiri Olsa <jolsa@kernel.org>
      Cc: "Peter Zijlstra (Intel)" <peterz@infradead.org>
      Cc: Jani Nikula <jani.nikula@intel.com>
      Cc: Nayna Jain <nayna@linux.ibm.com>
      Cc: Michal Hocko <mhocko@suse.com>
      Cc: Oscar Salvador <osalvador@suse.de>
      Cc: Stephen Rothwell <sfr@canb.auug.org.au>
      Cc: Dan Williams <dan.j.williams@intel.com>
      Cc: Pavel Tatashin <pasha.tatashin@soleen.com>
      Cc: <stable@vger.kernel.org>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      2c91f8fc
  2. 15 Nov, 2019 21 commits
  3. 14 Nov, 2019 5 commits
    • Xiaojie Yuan's avatar
      drm/amdgpu: fix null pointer deref in firmware header printing · a84fddb1
      Xiaojie Yuan authored
      
      
      v2: declare as (struct common_firmware_header *) type because
          struct xxx_firmware_header inherits from it
      
      When CE's ucode_id(8) is used to get sdma_hdr, we will be accessing an
      unallocated amdgpu_firmware_info instance.
      
      This issue appears on rhel7.7 with gcc 4.8.5. Newer compilers might have
      optimized out such 'defined but not referenced' variable.
      
      [ 1120.798564] BUG: unable to handle kernel NULL pointer dereference at 000000000000000a
      [ 1120.806703] IP: [<ffffffffc0e3c9b3>] psp_np_fw_load+0x1e3/0x390 [amdgpu]
      [ 1120.813693] PGD 80000002603ff067 PUD 271b8d067 PMD 0
      [ 1120.818931] Oops: 0000 [#1] SMP
      [ 1120.822245] Modules linked in: amdgpu(OE+) amdkcl(OE) amd_iommu_v2 amdttm(OE) amd_sched(OE) xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 tun bridge stp llc devlink ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 ipt_REJECT nf_reject_ipv4 xt_conntrack ebtable_nat ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_security ip6table_raw iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat iptable_mangle iptable_security iptable_raw nf_conntrack libcrc32c ip_set nfnetlink ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter sunrpc dm_mirror dm_region_hash dm_log dm_mod intel_pmc_core intel_powerclamp coretemp intel_rapl joydev kvm_intel eeepc_wmi asus_wmi kvm sparse_keymap iTCO_wdt irqbypass rfkill crc32_pclmul snd_hda_codec_realtek mxm_wmi ghash_clmulni_intel intel_wmi_thunderbolt iTCO_vendor_support snd_hda_codec_generic snd_hda_codec_hdmi aesni_intel lrw gf128mul glue_helper ablk_helper sg cryptd pcspkr snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_seq snd_seq_device snd_pcm snd_timer snd pinctrl_sunrisepoint pinctrl_intel soundcore acpi_pad mei_me wmi mei i2c_i801 pcc_cpufreq ip_tables ext4 mbcache jbd2 sd_mod crc_t10dif crct10dif_generic i915 i2c_algo_bit iosf_mbi drm_kms_helper e1000e syscopyarea sysfillrect sysimgblt fb_sys_fops ahci libahci drm ptp libata crct10dif_pclmul crct10dif_common crc32c_intel serio_raw pps_core drm_panel_orientation_quirks video i2c_hid
      [ 1120.954136] CPU: 4 PID: 2426 Comm: modprobe Tainted: G           OE  ------------   3.10.0-1062.el7.x86_64 #1
      [ 1120.964390] Hardware name: System manufacturer System Product Name/Z170-A, BIOS 1302 11/09/2015
      [ 1120.973321] task: ffff991ef1e3c1c0 ti: ffff991ee625c000 task.ti: ffff991ee625c000
      [ 1120.981020] RIP: 0010:[<ffffffffc0e3c9b3>]  [<ffffffffc0e3c9b3>] psp_np_fw_load+0x1e3/0x390 [amdgpu]
      [ 1120.990483] RSP: 0018:ffff991ee625f950  EFLAGS: 00010202
      [ 1120.995935] RAX: 0000000000000002 RBX: ffff991edf6b2d38 RCX: ffff991edf6a0000
      [ 1121.003391] RDX: 0000000000000000 RSI: ffff991f01d13898 RDI: ffffffffc110afb3
      [ 1121.010706] RBP: ffff991ee625f9b0 R08: 0000000000000000 R09: 0000000000000000
      [ 1121.018029] R10: 00000000000004c4 R11: ffff991ee625f64e R12: ffff991edf6b3220
      [ 1121.025353] R13: ffff991edf6a0000 R14: 0000000000000008 R15: ffff991edf6b2d30
      [ 1121.032666] FS:  00007f97b0c0b740(0000) GS:ffff991f01d00000(0000) knlGS:0000000000000000
      [ 1121.041000] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
      [ 1121.046880] CR2: 000000000000000a CR3: 000000025e604000 CR4: 00000000003607e0
      [ 1121.054239] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
      [ 1121.061631] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
      [ 1121.068938] Call Trace:
      [ 1121.071494]  [<ffffffffc0e3dba8>] psp_hw_init+0x218/0x270 [amdgpu]
      [ 1121.077886]  [<ffffffffc0da3188>] amdgpu_device_fw_loading+0xe8/0x160 [amdgpu]
      [ 1121.085296]  [<ffffffffc0e3b34c>] ? vega10_ih_irq_init+0x4bc/0x730 [amdgpu]
      [ 1121.092534]  [<ffffffffc0da5c75>] amdgpu_device_init+0x1495/0x1c90 [amdgpu]
      [ 1121.099675]  [<ffffffffc0da9cab>] amdgpu_driver_load_kms+0x8b/0x2f0 [amdgpu]
      [ 1121.106888]  [<ffffffffc01b25cf>] drm_dev_register+0x12f/0x1d0 [drm]
      [ 1121.113419]  [<ffffffffa4dcdfd8>] ? pci_enable_device_flags+0xe8/0x140
      [ 1121.120183]  [<ffffffffc0da260a>] amdgpu_pci_probe+0xca/0x170 [amdgpu]
      [ 1121.126919]  [<ffffffffa4dcf97a>] local_pci_probe+0x4a/0xb0
      [ 1121.132622]  [<ffffffffa4dd10c9>] pci_device_probe+0x109/0x160
      [ 1121.138607]  [<ffffffffa4eb4205>] driver_probe_device+0xc5/0x3e0
      [ 1121.144766]  [<ffffffffa4eb4603>] __driver_attach+0x93/0xa0
      [ 1121.150507]  [<ffffffffa4eb4570>] ? __device_attach+0x50/0x50
      [ 1121.156422]  [<ffffffffa4eb1da5>] bus_for_each_dev+0x75/0xc0
      [ 1121.162213]  [<ffffffffa4eb3b7e>] driver_attach+0x1e/0x20
      [ 1121.167771]  [<ffffffffa4eb3620>] bus_add_driver+0x200/0x2d0
      [ 1121.173590]  [<ffffffffa4eb4c94>] driver_register+0x64/0xf0
      [ 1121.179345]  [<ffffffffa4dd0905>] __pci_register_driver+0xa5/0xc0
      [ 1121.185593]  [<ffffffffc099f000>] ? 0xffffffffc099efff
      [ 1121.190914]  [<ffffffffc099f0a4>] amdgpu_init+0xa4/0xb0 [amdgpu]
      [ 1121.197101]  [<ffffffffa4a0210a>] do_one_initcall+0xba/0x240
      [ 1121.202901]  [<ffffffffa4b1c90a>] load_module+0x271a/0x2bb0
      [ 1121.208598]  [<ffffffffa4dad740>] ? ddebug_proc_write+0x100/0x100
      [ 1121.214894]  [<ffffffffa4b1ce8f>] SyS_init_module+0xef/0x140
      [ 1121.220698]  [<ffffffffa518bede>] system_call_fastpath+0x25/0x2a
      [ 1121.226870] Code: b4 01 60 a2 00 00 31 c0 e8 83 60 33 e4 41 8b 47 08 48 8b 4d d0 48 c7 c7 b3 af 10 c1 48 69 c0 68 07 00 00 48 8b 84 01 60 a2 00 00 <48> 8b 70 08 31 c0 48 89 75 c8 e8 56 60 33 e4 48 8b 4d d0 48 c7
      [ 1121.247422] RIP  [<ffffffffc0e3c9b3>] psp_np_fw_load+0x1e3/0x390 [amdgpu]
      [ 1121.254432]  RSP <ffff991ee625f950>
      [ 1121.258017] CR2: 000000000000000a
      [ 1121.261427] ---[ end trace e98b35387ede75bd ]---
      
      Signed-off-by: default avatarXiaojie Yuan <xiaojie.yuan@amd.com>
      Fixes: c5fb9126
      
       ("drm/amdgpu: add firmware header printing for psp fw loading (v2)")
      Reviewed-by: default avatarKevin Wang <kevin1.wang@amd.com>
      Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
      a84fddb1
    • Chuhong Yuan's avatar
      rsxx: add missed destroy_workqueue calls in remove · dcb77e4b
      Chuhong Yuan authored
      
      
      The driver misses calling destroy_workqueue in remove like what is done
      when probe fails.
      Add the missed calls to fix it.
      
      Signed-off-by: default avatarChuhong Yuan <hslester96@gmail.com>
      Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
      dcb77e4b
    • Ilya Dryomov's avatar
      rbd: silence bogus uninitialized warning in rbd_object_map_update_finish() · 633739b2
      Ilya Dryomov authored
      
      
      Some versions of gcc (so far 6.3 and 7.4) throw a warning:
      
        drivers/block/rbd.c: In function 'rbd_object_map_callback':
        drivers/block/rbd.c:2124:21: warning: 'current_state' may be used uninitialized in this function [-Wmaybe-uninitialized]
              (current_state == OBJECT_EXISTS && state == OBJECT_EXISTS_CLEAN))
        drivers/block/rbd.c:2092:23: note: 'current_state' was declared here
          u8 state, new_state, current_state;
                                ^~~~~~~~~~~~~
      
      It's bogus because all current_state accesses are guarded by
      has_current_state.
      
      Reported-by: default avatarkbuild test robot <lkp@intel.com>
      Signed-off-by: default avatarIlya Dryomov <idryomov@gmail.com>
      Reviewed-by: default avatarDongsheng Yang <dongsheng.yang@easystack.cn>
      633739b2
    • Eugen Hristev's avatar
      mmc: sdhci-of-at91: fix quirk2 overwrite · fed23c58
      Eugen Hristev authored
      The quirks2 are parsed and set (e.g. from DT) before the quirk for broken
      HS200 is set in the driver.
      The driver needs to enable just this flag, not rewrite the whole quirk set.
      
      Fixes: 7871aa60
      
       ("mmc: sdhci-of-at91: add quirk for broken HS200")
      Signed-off-by: default avatarEugen Hristev <eugen.hristev@microchip.com>
      Acked-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
      fed23c58
    • Jouni Hogander's avatar
      slcan: Fix memory leak in error path · ed50e160
      Jouni Hogander authored
      
      
      This patch is fixing memory leak reported by Syzkaller:
      
      BUG: memory leak unreferenced object 0xffff888067f65500 (size 4096):
        comm "syz-executor043", pid 454, jiffies 4294759719 (age 11.930s)
        hex dump (first 32 bytes):
          73 6c 63 61 6e 30 00 00 00 00 00 00 00 00 00 00 slcan0..........
          00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
        backtrace:
          [<00000000a06eec0d>] __kmalloc+0x18b/0x2c0
          [<0000000083306e66>] kvmalloc_node+0x3a/0xc0
          [<000000006ac27f87>] alloc_netdev_mqs+0x17a/0x1080
          [<0000000061a996c9>] slcan_open+0x3ae/0x9a0
          [<000000001226f0f9>] tty_ldisc_open.isra.1+0x76/0xc0
          [<0000000019289631>] tty_set_ldisc+0x28c/0x5f0
          [<000000004de5a617>] tty_ioctl+0x48d/0x1590
          [<00000000daef496f>] do_vfs_ioctl+0x1c7/0x1510
          [<0000000059068dbc>] ksys_ioctl+0x99/0xb0
          [<000000009a6eb334>] __x64_sys_ioctl+0x78/0xb0
          [<0000000053d0332e>] do_syscall_64+0x16f/0x580
          [<0000000021b83b99>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
          [<000000008ea75434>] 0xffffffffffffffff
      
      Cc: Wolfgang Grandegger <wg@grandegger.com>
      Cc: Marc Kleine-Budde <mkl@pengutronix.de>
      Cc: Lukas Bulwahn <lukas.bulwahn@gmail.com>
      Signed-off-by: default avatarJouni Hogander <jouni.hogander@unikie.com>
      Signed-off-by: default avatarMarc Kleine-Budde <mkl@pengutronix.de>
      ed50e160
  4. 13 Nov, 2019 9 commits