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| Filename | Latest commit message | Latest commit date |
|---|---|---|
d7742abfe6
commit 6f4679b956741d2da6ad3ebb738cbe1264ac8781 upstream.
This patch fix the below kernel crash.
BUG: Unable to handle kernel data access on read at 0xc000000380000000
Faulting instruction address: 0xc00000000008b6f0
cpu 0x5: Vector: 300 (Data Access) at [c0000000d8587790]
pc: c00000000008b6f0: arch_remove_memory+0x150/0x210
lr: c00000000008b720: arch_remove_memory+0x180/0x210
sp: c0000000d8587a20
msr: 800000000280b033
dar: c000000380000000
dsisr: 40000000
current = 0xc0000000d8558600
paca = 0xc00000000fff8f00 irqmask: 0x03 irq_happened: 0x01
pid = 1220, comm = ndctl
enter ? for help
memunmap_pages+0x33c/0x410
devm_action_release+0x30/0x50
release_nodes+0x30c/0x3a0
device_release_driver_internal+0x178/0x240
unbind_store+0x74/0x190
drv_attr_store+0x44/0x60
sysfs_kf_write+0x74/0xa0
kernfs_fop_write+0x1b0/0x260
__vfs_write+0x3c/0x70
vfs_write+0xe4/0x200
ksys_write+0x7c/0x140
system_call+0x5c/0x68
Fixes: 076265907cf9 ("powerpc: Chunk calls to flush_dcache_range in arch_*_memory")
Reported-by: Sachin Sant <sachinp@linux.vnet.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20191204052909.59145-1-aneesh.kumar@linux.ibm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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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.