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Filename Latest commit message Latest commit date
Bart Van Assche 1e974c08c7 RDMA/core: Fix ib_dma_max_seg_size() 
commit ecdfdfdbe4d4c74029f2b416b7ee6d0aeb56364a upstream.

If dev->dma_device->params == NULL then the maximum DMA segment size is 64
KB. See also the dma_get_max_seg_size() implementation. This patch fixes
the following kernel warning:

  DMA-API: infiniband rxe0: mapping sg segment longer than device claims to support [len=126976] [max=65536]
  WARNING: CPU: 4 PID: 4848 at kernel/dma/debug.c:1220 debug_dma_map_sg+0x3d9/0x450
  RIP: 0010:debug_dma_map_sg+0x3d9/0x450
  Call Trace:
   srp_queuecommand+0x626/0x18d0 [ib_srp]
   scsi_queue_rq+0xd02/0x13e0 [scsi_mod]
   __blk_mq_try_issue_directly+0x2b3/0x3f0
   blk_mq_request_issue_directly+0xac/0xf0
   blk_insert_cloned_request+0xdf/0x170
   dm_mq_queue_rq+0x43d/0x830 [dm_mod]
   __blk_mq_try_issue_directly+0x2b3/0x3f0
   blk_mq_request_issue_directly+0xac/0xf0
   blk_mq_try_issue_list_directly+0xb8/0x170
   blk_mq_sched_insert_requests+0x23c/0x3b0
   blk_mq_flush_plug_list+0x529/0x730
   blk_flush_plug_list+0x21f/0x260
   blk_mq_make_request+0x56b/0xf20
   generic_make_request+0x196/0x660
   submit_bio+0xae/0x290
   blkdev_direct_IO+0x822/0x900
   generic_file_direct_write+0x110/0x200
   __generic_file_write_iter+0x124/0x2a0
   blkdev_write_iter+0x168/0x270
   aio_write+0x1c4/0x310
   io_submit_one+0x971/0x1390
   __x64_sys_io_submit+0x12a/0x390
   do_syscall_64+0x6f/0x2e0
   entry_SYSCALL_64_after_hwframe+0x49/0xbe

Link: https://lore.kernel.org/r/20191025225830.257535-2-bvanassche@acm.org
Cc: <stable@vger.kernel.org>
Fixes: 0b5cb3300a ("RDMA/srp: Increase max_segment_size")
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-12-17 19:56:41 +01:00
arch ARM: dts: omap3-tao3530: Fix incorrect MMC card detection GPIO polarity 2019-12-17 19:56:40 +01:00
block blk-mq: avoid sysfs buffer overflow with too many CPU cores 2019-12-17 19:56:14 +01:00
certs PKCS#7: Refactor verify_pkcs7_signature() 2019-08-05 18:40:18 -04:00
crypto crypto: user - fix memory leak in crypto_reportstat 2019-12-13 08:43:11 +01:00
Documentation USB: documentation: flags on usb-storage versus UAS 2019-12-17 19:55:32 +01:00
drivers mmc: host: omap_hsmmc: add code for special init of wl1251 to get rid of pandora_wl1251_init_card 2019-12-17 19:56:40 +01:00
fs erofs: zero out when listxattr is called with no xattr 2019-12-17 19:56:23 +01:00
include RDMA/core: Fix ib_dma_max_seg_size() 2019-12-17 19:56:41 +01:00
init Merge branch 'next-lockdown' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2019-09-28 08:14:15 -07:00
ipc ipc/sem.c: convert to use built-in RCU list checking 2019-09-25 17:51:41 -07:00
kernel cgroup: pids: use atomic64_t for pids->limit 2019-12-17 19:56:15 +01:00
lib lib: raid6: fix awk build warnings 2019-12-17 19:56:09 +01:00
LICENSES
mm mm/ksm.c: don't WARN if page is still mapped in remove_stable_node() 2019-11-22 09:11:18 -08:00
net rfkill: allocate static minor 2019-12-13 08:43:18 +01:00
samples samples/bpf: fix build by setting HAVE_ATTR_TEST to zero 2019-10-31 21:39:15 +01:00
scripts arm64 fix for -rc8 / final 2019-11-15 09:14:23 -08:00
security efi/efi_test: Lock down /dev/efi_test and require CAP_SYS_ADMIN 2019-10-31 09:40:21 +01:00
sound ALSA: hda/realtek - Line-out jack doesn't work on a Dell AIO 2019-12-17 19:56:28 +01:00
tools perf tests: Fix out of bounds memory access 2019-12-17 19:56:23 +01:00
usr kbuild: update compile-test header list for v5.4-rc2 2019-10-05 15:29:49 +09:00
virt KVM: arm/arm64: vgic: Don't rely on the wrong pending table 2019-12-13 08:43:00 +01:00
.clang-format clang-format: Update with the latest for_each macro list 2019-08-31 10:00:51 +02:00
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore Modules updates for v5.4 2019-09-22 10:34:46 -07:00
.mailmap ARM: SoC fixes 2019-11-10 13:41:59 -08:00
COPYING
CREDITS MAINTAINERS: Remove Simon as Renesas SoC Co-Maintainer 2019-10-10 08:12:51 -07:00
Kbuild kbuild: do not descend to ./Kbuild when cleaning 2019-08-21 21:03:58 +09:00
Kconfig
MAINTAINERS Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2019-11-22 14:28:14 -08:00
Makefile Linux 5.4.3 2019-12-13 08:43:32 +01:00
README

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.