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  1. 31 7月, 2019 2 次提交
  3. 30 7月, 2019 2 次提交
  5. 26 7月, 2019 9 次提交
    • H
      virtio/s390: fix race on airq_areas[] · 4f419eb1
      由 Halil Pasic 提交于 
      The access to airq_areas was racy ever since the adapter interrupts got
introduced to virtio-ccw, but since commit 39c7dcb1 ("virtio/s390:
make airq summary indicators DMA") this became an issue in practice as
well. Namely before that commit the airq_info that got overwritten was
still functional. After that commit however the two infos share a
summary_indicator, which aggravates the situation. Which means
auto-online mechanism occasionally hangs the boot with virtio_blk.
Signed-off-by: NHalil Pasic <pasic@linux.ibm.com>
Reported-by: NMarc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: NCornelia Huck <cohuck@redhat.com>
Cc: stable@vger.kernel.org
Fixes: 96b14536 ("virtio-ccw: virtio-ccw adapter interrupt support.")
Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
      4f419eb1
    • G
      drm/i915: Mark expected switch fall-throughs · 2defb94e
      由 Gustavo A. R. Silva 提交于 
      In preparation to enabling -Wimplicit-fallthrough, mark switch
cases where we are expecting to fall through.

This patch fixes the following warnings:

drivers/gpu/drm/i915/gem/i915_gem_mman.c: In function ‘i915_gem_fault’:
drivers/gpu/drm/i915/gem/i915_gem_mman.c:342:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
   if (!i915_terminally_wedged(i915))
      ^
drivers/gpu/drm/i915/gem/i915_gem_mman.c:345:2: note: here
  case -EAGAIN:
  ^~~~

drivers/gpu/drm/i915/gem/i915_gem_pages.c: In function ‘i915_gem_object_map’:
./include/linux/compiler.h:78:22: warning: this statement may fall through [-Wimplicit-fallthrough=]
 # define unlikely(x) __builtin_expect(!!(x), 0)
                      ^~~~~~~~~~~~~~~~~~~~~~~~~~
./include/asm-generic/bug.h:136:2: note: in expansion of macro ‘unlikely’
  unlikely(__ret_warn_on);     \
  ^~~~~~~~
drivers/gpu/drm/i915/i915_utils.h:49:25: note: in expansion of macro ‘WARN’
 #define MISSING_CASE(x) WARN(1, "Missing case (%s == %ld)\n", \
                         ^~~~
drivers/gpu/drm/i915/gem/i915_gem_pages.c:270:3: note: in expansion of macro ‘MISSING_CASE’
   MISSING_CASE(type);
   ^~~~~~~~~~~~
drivers/gpu/drm/i915/gem/i915_gem_pages.c:272:2: note: here
  case I915_MAP_WB:
  ^~~~

drivers/gpu/drm/i915/i915_gpu_error.c: In function ‘error_record_engine_registers’:
./include/linux/compiler.h:78:22: warning: this statement may fall through [-Wimplicit-fallthrough=]
 # define unlikely(x) __builtin_expect(!!(x), 0)
                      ^~~~~~~~~~~~~~~~~~~~~~~~~~
./include/asm-generic/bug.h:136:2: note: in expansion of macro ‘unlikely’
  unlikely(__ret_warn_on);     \
  ^~~~~~~~
drivers/gpu/drm/i915/i915_utils.h:49:25: note: in expansion of macro ‘WARN’
 #define MISSING_CASE(x) WARN(1, "Missing case (%s == %ld)\n", \
                         ^~~~
drivers/gpu/drm/i915/i915_gpu_error.c:1196:5: note: in expansion of macro ‘MISSING_CASE’
     MISSING_CASE(engine->id);
     ^~~~~~~~~~~~
drivers/gpu/drm/i915/i915_gpu_error.c:1197:4: note: here
    case RCS0:
    ^~~~

drivers/gpu/drm/i915/display/intel_dp.c: In function ‘intel_dp_get_fia_supported_lane_count’:
./include/linux/compiler.h:78:22: warning: this statement may fall through [-Wimplicit-fallthrough=]
 # define unlikely(x) __builtin_expect(!!(x), 0)
                      ^~~~~~~~~~~~~~~~~~~~~~~~~~
./include/asm-generic/bug.h:136:2: note: in expansion of macro ‘unlikely’
  unlikely(__ret_warn_on);     \
  ^~~~~~~~
drivers/gpu/drm/i915/i915_utils.h:49:25: note: in expansion of macro ‘WARN’
 #define MISSING_CASE(x) WARN(1, "Missing case (%s == %ld)\n", \
                         ^~~~
drivers/gpu/drm/i915/display/intel_dp.c:233:3: note: in expansion of macro ‘MISSING_CASE’
   MISSING_CASE(lane_info);
   ^~~~~~~~~~~~
drivers/gpu/drm/i915/display/intel_dp.c:234:2: note: here
  case 1:
  ^~~~

drivers/gpu/drm/i915/display/intel_display.c: In function ‘check_digital_port_conflicts’:
  CC [M]  drivers/gpu/drm/nouveau/nvkm/engine/disp/cursgv100.o
drivers/gpu/drm/i915/display/intel_display.c:12043:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
    if (WARN_ON(!HAS_DDI(to_i915(dev))))
       ^
drivers/gpu/drm/i915/display/intel_display.c:12046:3: note: here
   case INTEL_OUTPUT_DP:
   ^~~~

Also, notice that the Makefile is modified to stop ignoring
fall-through warnings. The -Wimplicit-fallthrough option
will be enabled globally in v5.3.

Warning level 3 was used: -Wimplicit-fallthrough=3

This patch is part of the ongoing efforts to enable
-Wimplicit-fallthrough.
Reviewed-by: NKees Cook <keescook@chromium.org>
Signed-off-by: NGustavo A. R. Silva <gustavo@embeddedor.com>
      2defb94e
    • G
      drm/amd/display: Mark expected switch fall-throughs · 9e878917
      由 Gustavo A. R. Silva 提交于 
      In preparation to enabling -Wimplicit-fallthrough, mark switch
cases where we are expecting to fall through.

Warning level 3 was used: -Wimplicit-fallthrough=3

This patch is part of the ongoing efforts to enable -Wimplicit-fallthrough.
Signed-off-by: NGustavo A. R. Silva <gustavo@embeddedor.com>
      9e878917
    • G
      drm/amdkfd/kfd_mqd_manager_v10: Avoid fall-through warning · 12fce1ab
      由 Gustavo A. R. Silva 提交于 
      In preparation to enabling -Wimplicit-fallthrough, this patch silences
the following warning:

drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_mqd_manager_v10.c: In function ‘mqd_manager_init_v10’:
./include/linux/dynamic_debug.h:122:52: warning: this statement may fall through [-Wimplicit-fallthrough=]
 #define __dynamic_func_call(id, fmt, func, ...) do { \
                                                    ^
./include/linux/dynamic_debug.h:143:2: note: in expansion of macro ‘__dynamic_func_call’
  __dynamic_func_call(__UNIQUE_ID(ddebug), fmt, func, ##__VA_ARGS__)
  ^~~~~~~~~~~~~~~~~~~
./include/linux/dynamic_debug.h:153:2: note: in expansion of macro ‘_dynamic_func_call’
  _dynamic_func_call(fmt, __dynamic_pr_debug,  \
  ^~~~~~~~~~~~~~~~~~
./include/linux/printk.h:336:2: note: in expansion of macro ‘dynamic_pr_debug’
  dynamic_pr_debug(fmt, ##__VA_ARGS__)
  ^~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_mqd_manager_v10.c:432:3: note: in expansion of macro ‘pr_debug’
   pr_debug("%s@%i\n", __func__, __LINE__);
   ^~~~~~~~
drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_mqd_manager_v10.c:433:2: note: here
  case KFD_MQD_TYPE_COMPUTE:
  ^~~~

by removing the call to pr_debug() in KFD_MQD_TYPE_CP:

"The mqd init for CP and COMPUTE will have the same  routine." [1]

This bug was found thanks to the ongoing efforts to enable
-Wimplicit-fallthrough.

[1] https://lore.kernel.org/lkml/c735a1cc-a545-50fb-44e7-c0ad93ee8ee7@amd.com/Reviewed-by: NAlex Deucher <alexdeucher@gmail.com>
Signed-off-by: NGustavo A. R. Silva <gustavo@embeddedor.com>
      12fce1ab
    • G
      drm/amdgpu/gfx10: Fix missing break in switch statement · d64062b5
      由 Gustavo A. R. Silva 提交于 
      Add missing break statement in order to prevent the code from falling
through to case AMDGPU_IRQ_STATE_ENABLE.

This bug was found thanks to the ongoing efforts to enable
-Wimplicit-fallthrough.

Fixes: a644d85a ("drm/amdgpu: add gfx v10 implementation (v10)")
Cc: stable@vger.kernel.org
Reviewed-by: NAlex Deucher <alexdeucher@gmail.com>
Signed-off-by: NGustavo A. R. Silva <gustavo@embeddedor.com>
      d64062b5
    • G
      drm/amdkfd: Fix missing break in switch statement · 737298d1
      由 Gustavo A. R. Silva 提交于 
      Add missing break statement in order to prevent the code from falling
through to case CHIP_NAVI10.

This bug was found thanks to the ongoing efforts to enable
-Wimplicit-fallthrough.

Fixes: 14328aa5 ("drm/amdkfd: Add navi10 support to amdkfd. (v3)")
Cc: stable@vger.kernel.org
Reviewed-by: NAlex Deucher <alexdeucher@gmail.com>
Signed-off-by: NGustavo A. R. Silva <gustavo@embeddedor.com>
      737298d1
    • G
      mtd: onenand_base: Mark expected switch fall-through · cc407044
      由 Gustavo A. R. Silva 提交于 
      In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

This patch fixes the following warning:

drivers/mtd/nand/onenand/onenand_base.c: In function ‘onenand_check_features’:
drivers/mtd/nand/onenand/onenand_base.c:3264:17: warning: this statement may fall through [-Wimplicit-fallthrough=]
   this->options |= ONENAND_HAS_NOP_1;
drivers/mtd/nand/onenand/onenand_base.c:3265:2: note: here
  case ONENAND_DEVICE_DENSITY_4Gb:
  ^~~~

Warning level 3 was used: -Wimplicit-fallthrough=3

This patch is part of the ongoing efforts to enable
-Wimplicit-fallthrough.

Cc: Jonathan Bakker <xc-racer2@live.ca>
Signed-off-by: NGustavo A. R. Silva <gustavo@embeddedor.com>
      cc407044
    • G
      can: mark expected switch fall-throughs · 5a8dadbc
      由 Gustavo A. R. Silva 提交于 
      In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

This patch fixes the following warnings:

drivers/net/can/peak_canfd/peak_pciefd_main.c:668:3: warning: this statement may fall through [-Wimplicit-fallthrough=]
drivers/net/can/spi/mcp251x.c:875:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
drivers/net/can/usb/peak_usb/pcan_usb.c:422:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
drivers/net/can/at91_can.c:895:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
drivers/net/can/at91_can.c:953:15: warning: this statement may fall through [-Wimplicit-fallthrough=]
drivers/net/can/usb/peak_usb/pcan_usb.c: In function ‘pcan_usb_decode_error’:
drivers/net/can/usb/peak_usb/pcan_usb.c:422:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
   if (n & PCAN_USB_ERROR_BUS_LIGHT) {
      ^
drivers/net/can/usb/peak_usb/pcan_usb.c:428:2: note: here
  case CAN_STATE_ERROR_WARNING:
  ^~~~

Warning level 3 was used: -Wimplicit-fallthrough=3

This patch is part of the ongoing efforts to enabling
-Wimplicit-fallthrough.

Notice that in some cases spelling mistakes were fixed.
In other cases, the /* fall through */ comment is placed
at the bottom of the case statement, which is what GCC
is expecting to find.
Signed-off-by: NGustavo A. R. Silva <gustavo@embeddedor.com>
      5a8dadbc
    • G
      firewire: mark expected switch fall-throughs · eba6120d
      由 Gustavo A. R. Silva 提交于 
      In preparation to enabling -Wimplicit-fallthrough, mark switch
cases where we are expecting to fall through.

This patch fixes the following warnings:

drivers/firewire/core-device.c: In function ‘set_broadcast_channel’:
drivers/firewire/core-device.c:969:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
    if (data & cpu_to_be32(1 << 31)) {
       ^
drivers/firewire/core-device.c:974:3: note: here
   case RCODE_ADDRESS_ERROR:
   ^~~~
drivers/firewire/core-iso.c: In function ‘manage_channel’:
drivers/firewire/core-iso.c:308:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
    if ((data[0] & bit) == (data[1] & bit))
       ^
drivers/firewire/core-iso.c:312:3: note: here
   default:
   ^~~~~~~
drivers/firewire/core-topology.c: In function ‘count_ports’:
drivers/firewire/core-topology.c:69:23: warning: this statement may fall through [-Wimplicit-fallthrough=]
    (*child_port_count)++;
    ~~~~~~~~~~~~~~~~~~~^~
drivers/firewire/core-topology.c:70:3: note: here
   case SELFID_PORT_PARENT:
   ^~~~

Warning level 3 was used: -Wimplicit-fallthrough=3

Notice that in some cases, the code comment is modified in
accordance with what GCC is expecting to find.

This patch is part of the ongoing efforts to enable
-Wimplicit-fallthrough.

Cc: Kees Cook <keescook@chromium.org>
Cc: Mathieu Malaterre <malat@debian.org>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (reworded a comment)
Signed-off-by: NGustavo A. R. Silva <gustavo@embeddedor.com>
      eba6120d
  7. 25 7月, 2019 13 次提交
  9. 24 7月, 2019 11 次提交
  11. 23 7月, 2019 3 次提交
    • Y
      Revert "nvme-pci: don't create a read hctx mapping without read queues" · 8fe34be1
      由 yangerkun 提交于 
      This reverts commit 0298d543.

With this patch, set 'poll_queues > hard queues' will lead to 'nr_read_queues = 0'
in nvme_calc_irq_sets. Then poll_queues setting can fail since dev->tagset.nr_maps
equals to 2 and nvme_pci_map_queues will not do map for poll queues.
Signed-off-by: Nyangerkun <yangerkun@huawei.com>
Signed-off-by: NChristoph Hellwig <hch@lst.de>
      8fe34be1
    • M
      nvme: fix multipath crash when ANA is deactivated · 66b20ac0
      由 Marta Rybczynska 提交于 
      Fix a crash with multipath activated. It happends when ANA log
page is larger than MDTS and because of that ANA is disabled.
The driver then tries to access unallocated buffer when connecting
to a nvme target. The signature is as follows:

[  300.433586] nvme nvme0: ANA log page size (8208) larger than MDTS (8192).
[  300.435387] nvme nvme0: disabling ANA support.
[  300.437835] nvme nvme0: creating 4 I/O queues.
[  300.459132] nvme nvme0: new ctrl: NQN "nqn.0.0.0", addr 10.91.0.1:8009
[  300.464609] BUG: unable to handle kernel NULL pointer dereference at 0000000000000008
[  300.466342] #PF error: [normal kernel read fault]
[  300.467385] PGD 0 P4D 0
[  300.467987] Oops: 0000 [#1] SMP PTI
[  300.468787] CPU: 3 PID: 50 Comm: kworker/u8:1 Not tainted 5.0.20kalray+ #4
[  300.470264] Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011
[  300.471532] Workqueue: nvme-wq nvme_scan_work [nvme_core]
[  300.472724] RIP: 0010:nvme_parse_ana_log+0x21/0x140 [nvme_core]
[  300.474038] Code: 45 01 d2 d8 48 98 c3 66 90 0f 1f 44 00 00 41 57 41 56 41 55 41 54 55 53 48 89 fb 48 83 ec 08 48 8b af 20 0a 00 00 48 89 34 24 <66> 83 7d 08 00 0f 84 c6 00 00 00 44 8b 7d 14 49 89 d5 8b 55 10 48
[  300.477374] RSP: 0018:ffffa50e80fd7cb8 EFLAGS: 00010296
[  300.478334] RAX: 0000000000000001 RBX: ffff9130f1872258 RCX: 0000000000000000
[  300.479784] RDX: ffffffffc06c4c30 RSI: ffff9130edad4280 RDI: ffff9130f1872258
[  300.481488] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000044
[  300.483203] R10: 0000000000000220 R11: 0000000000000040 R12: ffff9130f18722c0
[  300.484928] R13: ffff9130f18722d0 R14: ffff9130edad4280 R15: ffff9130f18722c0
[  300.486626] FS:  0000000000000000(0000) GS:ffff9130f7b80000(0000) knlGS:0000000000000000
[  300.488538] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  300.489907] CR2: 0000000000000008 CR3: 00000002365e6000 CR4: 00000000000006e0
[  300.491612] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  300.493303] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  300.494991] Call Trace:
[  300.495645]  nvme_mpath_add_disk+0x5c/0xb0 [nvme_core]
[  300.496880]  nvme_validate_ns+0x2ef/0x550 [nvme_core]
[  300.498105]  ? nvme_identify_ctrl.isra.45+0x6a/0xb0 [nvme_core]
[  300.499539]  nvme_scan_work+0x2b4/0x370 [nvme_core]
[  300.500717]  ? __switch_to_asm+0x35/0x70
[  300.501663]  process_one_work+0x171/0x380
[  300.502340]  worker_thread+0x49/0x3f0
[  300.503079]  kthread+0xf8/0x130
[  300.503795]  ? max_active_store+0x80/0x80
[  300.504690]  ? kthread_bind+0x10/0x10
[  300.505502]  ret_from_fork+0x35/0x40
[  300.506280] Modules linked in: nvme_tcp nvme_rdma rdma_cm iw_cm ib_cm ib_core nvme_fabrics nvme_core xt_physdev ip6table_raw ip6table_mangle ip6table_filter ip6_tables xt_comment iptable_nat nf_nat_ipv4 nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 xt_CHECKSUM iptable_mangle iptable_filter veth ebtable_filter ebtable_nat ebtables iptable_raw vxlan ip6_udp_tunnel udp_tunnel sunrpc joydev pcspkr virtio_balloon br_netfilter bridge stp llc ip_tables xfs libcrc32c ata_generic pata_acpi virtio_net virtio_console net_failover virtio_blk failover ata_piix serio_raw libata virtio_pci virtio_ring virtio
[  300.514984] CR2: 0000000000000008
[  300.515569] ---[ end trace faa2eefad7e7f218 ]---
[  300.516354] RIP: 0010:nvme_parse_ana_log+0x21/0x140 [nvme_core]
[  300.517330] Code: 45 01 d2 d8 48 98 c3 66 90 0f 1f 44 00 00 41 57 41 56 41 55 41 54 55 53 48 89 fb 48 83 ec 08 48 8b af 20 0a 00 00 48 89 34 24 <66> 83 7d 08 00 0f 84 c6 00 00 00 44 8b 7d 14 49 89 d5 8b 55 10 48
[  300.520353] RSP: 0018:ffffa50e80fd7cb8 EFLAGS: 00010296
[  300.521229] RAX: 0000000000000001 RBX: ffff9130f1872258 RCX: 0000000000000000
[  300.522399] RDX: ffffffffc06c4c30 RSI: ffff9130edad4280 RDI: ffff9130f1872258
[  300.523560] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000044
[  300.524734] R10: 0000000000000220 R11: 0000000000000040 R12: ffff9130f18722c0
[  300.525915] R13: ffff9130f18722d0 R14: ffff9130edad4280 R15: ffff9130f18722c0
[  300.527084] FS:  0000000000000000(0000) GS:ffff9130f7b80000(0000) knlGS:0000000000000000
[  300.528396] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  300.529440] CR2: 0000000000000008 CR3: 00000002365e6000 CR4: 00000000000006e0
[  300.530739] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  300.531989] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  300.533264] Kernel panic - not syncing: Fatal exception
[  300.534338] Kernel Offset: 0x17c00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
[  300.536227] ---[ end Kernel panic - not syncing: Fatal exception ]---

Condition check refactoring from Christoph Hellwig.
Signed-off-by: NMarta Rybczynska <marta.rybczynska@kalray.eu>
Tested-by: NJean-Baptiste Riaux <jbriaux@kalray.eu>
Signed-off-by: NChristoph Hellwig <hch@lst.de>
      66b20ac0
    • L
      nvme: fix memory leak caused by incorrect subsystem free · e654dfd3
      由 Logan Gunthorpe 提交于 
      When freeing the subsystem after finding another match with
__nvme_find_get_subsystem(), use put_device() instead of
__nvme_release_subsystem() which calls kfree() directly.

Per the documentation, put_device() should always be used
after device_initialization() is called. Otherwise, leaks
like the one below which was detected by kmemleak may occur.

Once the call of __nvme_release_subsystem() is removed it no
longer makes sense to keep the helper, so fold it back
into nvme_release_subsystem().

unreferenced object 0xffff8883d12bfbc0 (size 16):
  comm "nvme", pid 2635, jiffies 4294933602 (age 739.952s)
  hex dump (first 16 bytes):
    6e 76 6d 65 2d 73 75 62 73 79 73 32 00 88 ff ff  nvme-subsys2....
  backtrace:
    [<000000007d8fc208>] __kmalloc_track_caller+0x16d/0x2a0
    [<0000000081169e5f>] kvasprintf+0xad/0x130
    [<0000000025626f25>] kvasprintf_const+0x47/0x120
    [<00000000fa66ad36>] kobject_set_name_vargs+0x44/0x120
    [<000000004881f8b3>] dev_set_name+0x98/0xc0
    [<000000007124dae3>] nvme_init_identify+0x1995/0x38e0
    [<000000009315020a>] nvme_loop_configure_admin_queue+0x4fa/0x5e0
    [<000000001a63e766>] nvme_loop_create_ctrl+0x489/0xf80
    [<00000000a46ecc23>] nvmf_dev_write+0x1a12/0x2220
    [<000000002259b3d5>] __vfs_write+0x66/0x120
    [<000000002f6df81e>] vfs_write+0x154/0x490
    [<000000007e8cfc19>] ksys_write+0x10a/0x240
    [<00000000ff5c7b85>] __x64_sys_write+0x73/0xb0
    [<00000000fee6d692>] do_syscall_64+0xaa/0x470
    [<00000000997e1ede>] entry_SYSCALL_64_after_hwframe+0x49/0xbe

Fixes: ab9e00cc ("nvme: track subsystems")
Signed-off-by: NLogan Gunthorpe <logang@deltatee.com>
Reviewed-by: NSagi Grimberg <sagi@grimberg.me>
Signed-off-by: NChristoph Hellwig <hch@lst.de>
      e654dfd3