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06d129946a
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Ioana Ciornei 06d129946a dpaa2-eth: retrieve the virtual address before dma_unmap 
The TSO header was DMA unmapped before the virtual address was retrieved
and then used to free the buffer. This meant that we were actually
removing the DMA map and then trying to search for it to help in
retrieving the virtual address. This lead to a invalid virtual address
being used in the kfree call.

Fix this by calling dpaa2_iova_to_virt() prior to the dma_unmap call.

[  487.231819] Unable to handle kernel paging request at virtual address fffffd9807000008

(...)

[  487.354061] Hardware name: SolidRun LX2160A Honeycomb (DT)
[  487.359535] pstate: a0400005 (NzCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[  487.366485] pc : kfree+0xac/0x304
[  487.369799] lr : kfree+0x204/0x304
[  487.373191] sp : ffff80000c4eb120
[  487.376493] x29: ffff80000c4eb120 x28: ffff662240c46400 x27: 0000000000000001
[  487.383621] x26: 0000000000000001 x25: ffff662246da0cc0 x24: ffff66224af78000
[  487.390748] x23: ffffad184f4ce008 x22: ffffad1850185000 x21: ffffad1838d13cec
[  487.397874] x20: ffff6601c0000000 x19: fffffd9807000000 x18: 0000000000000000
[  487.405000] x17: ffffb910cdc49000 x16: ffffad184d7d9080 x15: 0000000000004000
[  487.412126] x14: 0000000000000008 x13: 000000000000ffff x12: 0000000000000000
[  487.419252] x11: 0000000000000004 x10: 0000000000000001 x9 : ffffad184d7d927c
[  487.426379] x8 : 0000000000000000 x7 : 0000000ffffffd1d x6 : ffff662240a94900
[  487.433505] x5 : 0000000000000003 x4 : 0000000000000009 x3 : ffffad184f4ce008
[  487.440632] x2 : ffff662243eec000 x1 : 0000000100000100 x0 : fffffc0000000000
[  487.447758] Call trace:
[  487.450194]  kfree+0xac/0x304
[  487.453151]  dpaa2_eth_free_tx_fd.isra.0+0x33c/0x3e0 [fsl_dpaa2_eth]
[  487.459507]  dpaa2_eth_tx_conf+0x100/0x2e0 [fsl_dpaa2_eth]
[  487.464989]  dpaa2_eth_poll+0xdc/0x380 [fsl_dpaa2_eth]

Fixes: 3dc709e0cd ("dpaa2-eth: add support for software TSO")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=215886
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-05-22 22:18:05 +01:00
arch Merge branch 'arm/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc 2022-05-18 14:07:43 -10:00
block block/mq-deadline: Set the fifo_time member also if inserting at head 2022-05-13 17:02:46 -06:00
certs Kbuild updates for v5.18 2022-03-31 11:59:03 -07:00
crypto for-5.18/64bit-pi-2022-03-25 2022-03-26 12:01:35 -07:00
Documentation Documentation: add description for net.core.gro_normal_batch 2022-05-19 17:46:23 -07:00
drivers dpaa2-eth: retrieve the virtual address before dma_unmap 2022-05-22 22:18:05 +01:00
fs io_uring-5.18-2022-05-18 2022-05-18 14:21:30 -10:00
include rxrpc: Fix decision on when to generate an IDLE ACK 2022-05-22 21:30:53 +01:00
init Kbuild updates for v5.18 2022-03-31 11:59:03 -07:00
ipc fs: allocate inode by using alloc_inode_sb() 2022-03-22 15:57:03 -07:00
kernel audit,io_uring,io-wq: call __audit_uring_exit for dummy contexts 2022-05-17 15:03:36 -04:00
lib Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2022-05-18 14:02:25 -10:00
LICENSES LICENSES/LGPL-2.1: Add LGPL-2.1-or-later as valid identifiers 2021-12-16 14:33:10 +01:00
mm hotfixes for 5.18-rc7 2022-05-13 10:22:37 -07:00
net rxrpc: Fix decision on when to generate an IDLE ACK 2022-05-22 21:30:53 +01:00
samples sched/tracing: Append prev_state to tp args instead 2022-05-12 00:37:11 +02:00
scripts objtool: Enable unreachable warnings for CLANG LTO 2022-04-19 21:58:48 +02:00
security selinux: fix bad cleanup on error in hashtab_duplicate() 2022-05-17 18:34:35 -04:00
sound ALSA: usb-audio: Restore Rane SL-1 quirk 2022-05-16 12:41:13 +02:00
tools Networking fixes for 5.18-rc8, including fixes from can, xfrm and 2022-05-19 05:50:29 -10:00
usr Kbuild updates for v5.18 2022-03-31 11:59:03 -07:00
virt Merge branch 'kvm-fixes-for-5.18-rc5' into HEAD 2022-04-29 12:39:34 -04:00
.clang-format genirq/msi: Make interrupt allocation less convoluted 2021-12-16 22:22:20 +01:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.get_maintainer.ignore Opt out of scripts/get_maintainer.pl 2019-05-16 10:53:40 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore .gitignore: ignore only top-level modules.builtin 2021-05-02 00:43:35 +09:00
.mailmap hotfixes for 5.18-rc7 2022-05-13 10:22:37 -07:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: replace a Microchip AT91 maintainer 2022-02-09 11:30:01 +01:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS Merge branch 'arm/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc 2022-05-18 14:07:43 -10:00
Makefile Linux 5.18-rc7 2022-05-15 18:08:58 -07:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

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.