IF YOU WOULD LIKE TO GET AN ACCOUNT, please write an
email to Administrator. User accounts are meant only to access repo
and report issues and/or generate pull requests.
This is a purpose-specific Git hosting for
BaseALT
projects. Thank you for your understanding!
Только зарегистрированные пользователи имеют доступ к сервису!
Для получения аккаунта, обратитесь к администратору.
It's very easy to confuse __PHYS_OFFSET and PHYS_OFFSET. To clarify
things, let's remove __PHYS_OFFSET and use KERNEL_START directly, with
comments to show that we're using physical address, as we do for other
objects.
At the same time, update the comment regarding the kernel entry address
to mention __pa(KERNEL_START) rather than __pa(PAGE_OFFSET).
There should be no functional change as a result of this patch.
Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Link: https://lore.kernel.org/r/20220629041207.1670133-1-anshuman.khandual@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
Currently, a build with CONFIG_EFI=n and CONFIG_KASAN=y will not
complete successfully because of missing symbols. This is due to the
fact that the __pi_ prefixed aliases for __memcpy/__memmove were put
inside a #ifdef CONFIG_EFI block inadvertently, and are therefore
missing from the build in question.
These definitions should only be provided when needed, as they will
otherwise clutter up the symbol table, kallsyms etc for no reason.
Fortunately, instead of using CPP conditionals, we can achieve the same
result by using the linker's PROVIDE() directive, which only defines a
symbol if it is required to complete the link. So let's use that for all
symbols alias definitions.
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20220629083246.3729177-1-ardb@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
We no longer need to call into the kernel to map the FDT before calling
into the kernel so let's drop the helpers we added for this.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20220624150651.1358849-22-ardb@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
Currently, when KASLR is in effect, we set up the kernel virtual address
space twice: the first time, the KASLR seed is looked up in the device
tree, and the kernel virtual mapping is torn down and recreated again,
after which the relocations are applied a second time. The latter step
means that statically initialized global pointer variables will be reset
to their initial values, and to ensure that BSS variables are not set to
values based on the initial translation, they are cleared again as well.
All of this is needed because we need the command line (taken from the
DT) to tell us whether or not to randomize the virtual address space
before entering the kernel proper. However, this code has expanded
little by little and now creates global state unrelated to the virtual
randomization of the kernel before the mapping is torn down and set up
again, and the BSS cleared for a second time. This has created some
issues in the past, and it would be better to avoid this little dance if
possible.
So instead, let's use the temporary mapping of the device tree, and
execute the bare minimum of code to decide whether or not KASLR should
be enabled, and what the seed is. Only then, create the virtual kernel
mapping, clear BSS, etc and proceed as normal. This avoids the issues
around inconsistent global state due to BSS being cleared twice, and is
generally more maintainable, as it permits us to defer all the remaining
DT parsing and KASLR initialization to a later time.
This means the relocation fixup code runs only a single time as well,
allowing us to simplify the RELR handling code too, which is not
idempotent and was therefore required to keep track of the offset that
was applied the first time around.
Note that this means we have to clone a pair of FDT library objects, so
that we can control how they are built - we need the stack protector
and other instrumentation disabled so that the code can tolerate being
called this early. Note that only the kernel page tables and the
temporary stack are mapped read-write at this point, which ensures that
the early code does not modify any global state inadvertently.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20220624150651.1358849-21-ardb@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
The early KASLR init code runs extremely early, and anything that could
be deferred until later should be. So let's defer the randomization of
the module region until much later - this also simplifies the
arithmetic, given that we no longer have to reason about the link time
vs load time placement of the core kernel explicitly. Also get rid of
the global status variable, and infer the status reported by the
diagnostic print from other KASLR related context.
While at it, get rid of the special case for KASAN without
KASAN_VMALLOC, which never occurs in practice.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20220624150651.1358849-20-ardb@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
In order to avoid having to touch memory with the MMU and caches
disabled, and therefore having to invalidate it from the caches
explicitly, just defer storing the value until after the MMU has been
turned on, unless we are giving up with an error.
While at it, move the associated variable definitions into C code.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20220624150651.1358849-19-ardb@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
Now that we can access the entire kernel image via the ID map, we can
execute the page table population code with the MMU and caches enabled.
The only thing we need to ensure is that translations via TTBR1 remain
disabled while we are updating the page tables the second time around,
in case KASLR wants them to be randomized.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20220624150651.1358849-18-ardb@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
Create a macro load_ttbr1 to avoid having to repeat the same instruction
sequence 3 times in a subsequent patch. No functional change intended.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20220624150651.1358849-17-ardb@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
Instead of calling into the kernel to map the FDT into the kernel page
tables before even calling start_kernel(), let's switch to the initial,
temporary mapping of the device tree that has been added to the ID map.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20220624150651.1358849-16-ardb@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
We need to access the DT very early to get at the command line and the
KASLR seed, which currently means we rely on some hacks to call into the
kernel before really calling into the kernel, which is undesirable.
So instead, let's create a mapping for the FDT in the initial ID map,
which is feasible now that it has been extended to cover more than a
single page or block, and can be updated in place to remap other output
addresses.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20220624150651.1358849-15-ardb@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
Formerly, we had to access the RELA and RELR tables via the kernel
mapping that was being relocated, and so deriving the start and end
addresses using ADRP/ADD references was not possible, as the relocation
code runs from the ID map.
Now that we map the entire kernel image via the ID map, we can simplify
this, and just load the entries via the ID map as well.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20220624150651.1358849-14-ardb@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
As a first step towards avoiding the need to create, tear down and
recreate the kernel virtual mapping with MMU and caches disabled, start
by expanding the ID map so it covers the page tables as well as all
executable code. This will allow us to populate the page tables with the
MMU and caches on, and call KASLR init code before setting up the
virtual mapping.
Since this ID map is only needed at boot, create it as a temporary set
of page tables, and populate the permanent ID map after enabling the MMU
and caches. While at it, switch to read-only attributes for the where
possible, as writable permissions are only needed for the initial kernel
page tables. Note that on 4k granule configurations, the permanent ID
map will now be reduced to a single page rather than a 2M block mapping.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20220624150651.1358849-13-ardb@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
The asm macros used to create the initial ID map and kernel mappings
don't support randomly remapping parts of the address space after it has
been populated. What we can do, however, given that all block or page
mappings are created at the final level, is take a subset of the mapped
range and update its attributes or output address. This will permit us
to make parts of these page tables read-only, or remap a part of it to
cover the device tree.
So add a helper that encapsulates this.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20220624150651.1358849-12-ardb@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
In preparation for changing the way we initialize the permanent ID map,
update cpu_replace_ttbr1() so we can use it with the initial ID map as
well.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20220624150651.1358849-11-ardb@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
We will be adding an initial ID map that covers the entire kernel image,
so we will pass the actual ID map root table to use to __enable_mmu(),
rather than hard code it.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20220624150651.1358849-10-ardb@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
Some early boot code runs before the virtual placement of the kernel is
finalized, and we used to go back to the very start and recreate the ID
map along with the page tables describing the virtual kernel mapping,
and this involved setting some global variables with the caches off.
In order to ensure that global state created by the KASLR code is not
corrupted by the cache invalidation that occurs in that case, we needed
to clean those global variables to the PoC explicitly.
This is no longer needed now that the ID map is created only once (and
the associated global variable updates are no longer repeated). So drop
the cache maintenance that is no longer necessary.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Link: https://lore.kernel.org/r/20220624150651.1358849-9-ardb@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
Split off the creation of the ID map page tables, so that we can avoid
running it again unnecessarily when KASLR is in effect (which only
randomizes the virtual placement). This will permit us to drop some
explicit cache maintenance to the PoC which was necessary because the
cache invalidation being performed on some global variables might
otherwise clobber unrelated variables that happen to share a cacheline.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20220624150651.1358849-8-ardb@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
In a future patch, we will start using an ID map that covers the entire
image, rather than a single page. This means that we need to deal with
the pathological case of an extended ID map where the kernel image does
not fit neatly inside a single entry at the root level, which means we
will need to create additional table entries and map additional pages
for page tables.
The existing map_memory macro already takes care of most of that, so
let's just extend it to deal with this case as well. While at it, drop
the conditional branch on the value of T0SZ: we don't set the variable
anymore in the entry code, and so we can just let the map_memory macro
deal with the case where the output address exceeds VA_BITS.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20220624150651.1358849-7-ardb@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
Simplify the macros in head.S that are used to set up the early page
tables, by switching to immediates for the number of bits that are
interpreted as the table index at each level. This makes it much
easier to infer from the instruction stream what is going on, and
reduces the number of instructions emitted substantially.
Note that the extended ID map for cases where no additional level needs
to be configured now uses a compile time size as well, which means that
we interpret up to 10 bits as the table index at the root level (for
52-bit physical addressing), without taking into account whether or not
this is supported on the current system. However, those bits can only
be set if we are executing the image from an address that exceeds the
48-bit PA range, and are guaranteed to be cleared otherwise, and given
that we are dealing with a mapping in the lower TTBR0 range of the
address space, the result is therefore the same as if we'd mask off only
6 bits.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20220624150651.1358849-6-ardb@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
The assignment of idmap_ptrs_per_pgd lacks any cache invalidation, even
though it is updated with the MMU and caches disabled. However, we never
bother to read the value again except in the very next instruction, and
so we can just drop the variable entirely.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Link: https://lore.kernel.org/r/20220624150651.1358849-5-ardb@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
Setting idmap_t0sz involves fiddling with the caches if done with the
MMU off. Since we will be creating an initial ID map with the MMU and
caches off, and the permanent ID map with the MMU and caches on, let's
move this assignment of idmap_t0sz out of the startup code, and replace
it with a macro that simply issues the three instructions needed to
calculate the value wherever it is needed before the MMU is turned on.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20220624150651.1358849-4-ardb@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
Currently, we only support 52-bit virtual addressing on 64k pages
configurations, and in all other cases, vabits_actual is guaranteed to
equal VA_BITS (== VA_BITS_MIN). So get rid of the variable entirely in
that case.
While at it, move the assignment out of the asm entry code - it has no
need to be there.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20220624150651.1358849-3-ardb@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
This variable definition does not need to be in head.S so move it out.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Link: https://lore.kernel.org/r/20220624150651.1358849-2-ardb@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
- Make RESERVE_BRK() work again with older binutils. The recent
'simplification' broke that.
- Make early #VE handling increment RIP when successful.
- Make the #VE code consistent vs. the RIP adjustments and add comments.
- Handle load_unaligned_zeropad() across page boundaries correctly in #VE
when the second page is shared.
-----BEGIN PGP SIGNATURE-----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=sRtG
-----END PGP SIGNATURE-----
Merge tag 'x86-urgent-2022-06-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:
- Make RESERVE_BRK() work again with older binutils. The recent
'simplification' broke that.
- Make early #VE handling increment RIP when successful.
- Make the #VE code consistent vs. the RIP adjustments and add
comments.
- Handle load_unaligned_zeropad() across page boundaries correctly in
#VE when the second page is shared.
* tag 'x86-urgent-2022-06-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/tdx: Handle load_unaligned_zeropad() page-cross to a shared page
x86/tdx: Clarify RIP adjustments in #VE handler
x86/tdx: Fix early #VE handling
x86/mm: Fix RESERVE_BRK() for older binutils
- Remove obsolete CONFIG_X86_SMAP reference from objtool
- Fix overlapping text section failures in faddr2line for real
- Remove OBJECT_FILES_NON_STANDARD usage from x86 ftrace and replace it
with finegrained annotations so objtool can validate that code
correctly.
-----BEGIN PGP SIGNATURE-----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=12KJ
-----END PGP SIGNATURE-----
Merge tag 'objtool-urgent-2022-06-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull build tooling updates from Thomas Gleixner:
- Remove obsolete CONFIG_X86_SMAP reference from objtool
- Fix overlapping text section failures in faddr2line for real
- Remove OBJECT_FILES_NON_STANDARD usage from x86 ftrace and replace it
with finegrained annotations so objtool can validate that code
correctly.
* tag 'objtool-urgent-2022-06-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/ftrace: Remove OBJECT_FILES_NON_STANDARD usage
faddr2line: Fix overlapping text section failures, the sequel
objtool: Fix obsolete reference to CONFIG_X86_SMAP
balance_push(). sched_setscheduler() spliced the balance callbacks accross
a lock break which makes an interleaving schedule() observe an empty list.
-----BEGIN PGP SIGNATURE-----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=k54w
-----END PGP SIGNATURE-----
Merge tag 'sched-urgent-2022-06-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fix from Thomas Gleixner:
"A single scheduler fix plugging a race between sched_setscheduler()
and balance_push().
sched_setscheduler() spliced the balance callbacks accross a lock
break which makes it possible for an interleaving schedule() to
observe an empty list"
* tag 'sched-urgent-2022-06-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched: Fix balance_push() vs __sched_setscheduler()
worked until prandom_u32() was switched to the real random generator, which
takes a spinlock for extraction, which does not work on RT when invoked
from atomic contexts. lockdep has no requirement for real random numbers
and it turns out sched_clock() is good enough to create the cookie. That
works everywhere and is faster.
-----BEGIN PGP SIGNATURE-----
iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAmKvHPcTHHRnbHhAbGlu
dXRyb25peC5kZQAKCRCmGPVMDXSYoW73D/9fVCl4iwazRZQ/srOivetw1tT1LVvV
v4HZpwjKbmokXf4Y9XMb0IvLJQro8Qr+YHkmEdZ3gpPWskYOcYpUko9TLgm5NKlH
T5PLqXa9mjMfBP1cHQETKUe/fFvNzwj2sp4QX4/Iydu/VrZRgeID4EDZuByz7Vyn
fGYIC7W2ADugxdFAQ0/Zswf5N+Dfyd2T0+5AYcfkxhBJZNnYiInzE5ae+6sLPsO9
h4mE5+nw6sNGNTZ4IHcr8Ff9V8ppxBMbOqFWaEa0nvnnnH483GzXRbXsdjFrAtNz
GoJuDhhNmkVAO49wnCGIt755w7Ay1mFG1IjP4jxDWAwQGd1z/sY3PIZtqUPtB6Ou
ldVApDJvS3wVB6rxEcoRjuZ6xgbA/6W6tPJ+KIP4Gbwgwm1Y8TekS2Qzc5BNqS9I
AuXB6CFWxRZj4078ZwYM59ctKi8dOrGp7VRbU+J/xPZ7KcFvItzuCyITSoHOAg+S
0RH3mZdggqIRViv25WYpr93+yS6yYzwZxhIVJ3H6IxHAqM0JGac8WjTDozGqbBI2
GT7UX+1tngHSM+U9t1VZSC44omeBI7j3ZWh2V3OELhqP4xdUr1QXk5/MNGgYMXlt
yqqfvVx4qCP7yIH9adwb++jkicbQbvrdICJL/gouW6zL03JWVv5zPZ+LUm4dss9o
BvtiF6tjaOkWsA==
=iuyB
-----END PGP SIGNATURE-----
Merge tag 'locking-urgent-2022-06-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull lockdep fix from Thomas Gleixner:
"A RT fix for lockdep.
lockdep invokes prandom_u32() to create cookies. This worked until
prandom_u32() was switched to the real random generator, which takes a
spinlock for extraction, which does not work on RT when invoked from
atomic contexts.
lockdep has no requirement for real random numbers and it turns out
sched_clock() is good enough to create the cookie. That works
everywhere and is faster"
* tag 'locking-urgent-2022-06-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
locking/lockdep: Use sched_clock() for random numbers
Here are some small char/misc driver fixes for 5.19-rc3 that resolve
some reported issues.
They include:
- mei driver fixes
- comedi driver fix
- rtsx build warning fix
- fsl-mc-bus driver fix
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-----BEGIN PGP SIGNATURE-----
iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCYq8I/Q8cZ3JlZ0Brcm9h
aC5jb20ACgkQMUfUDdst+ylZlgCdEnqmS5N5deU40WD0CwRchzg1PCsAnAz0XUsz
yAj2wz/dh6H741FisaoO
=Dfta
-----END PGP SIGNATURE-----
Merge tag 'char-misc-5.19-rc3-take2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes for real from Greg KH:
"Let's tag the proper branch this time...
Here are some small char/misc driver fixes for 5.19-rc3 that resolve
some reported issues.
They include:
- mei driver fixes
- comedi driver fix
- rtsx build warning fix
- fsl-mc-bus driver fix
All of these have been in linux-next for a while with no reported
issues"
This is what the merge in commit f0ec9c65a8d6 _should_ have merged, but
Greg fat-fingered the pull request and I got some small changes from
linux-next instead there. Credit to Nathan Chancellor for eagle-eyes.
Link: https://lore.kernel.org/all/Yqywy+Md2AfGDu8v@dev-arch.thelio-3990X/
* tag 'char-misc-5.19-rc3-take2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
bus: fsl-mc-bus: fix KASAN use-after-free in fsl_mc_bus_remove()
mei: me: add raptor lake point S DID
mei: hbm: drop capability response on early shutdown
mei: me: set internal pg flag to off on hardware reset
misc: rtsx: Fix clang -Wsometimes-uninitialized in rts5261_init_from_hw()
comedi: vmk80xx: fix expression for tx buffer size
-----BEGIN PGP SIGNATURE-----
iQIzBAABCgAdFiEEOZGx6rniZ1Gk92RdFA3kzBSgKbYFAmKu36cACgkQFA3kzBSg
KbYhvhAAmng8BYywLMD3ihKKoAI4TZSqMtb6YCZpaNB0GMu9TzvM+uV7uhS9Kjpm
MvbPbrU7SZAC1StzHsLbApKRb9XGkDHEcWktwbJyot0NSAR1Pk3/DUsU0h2XZiPG
/k1clHM+b5uLFxZ3HDRbSs1QCdHcYtRZfpl3ZvzNZCDJDzG3do0vbivrue2UdqIp
CajHnXI6UZgnRboeqZGylRAaneD1YgTzMTqmyusoOOTN20GePXSFTmzBGG7/XtGi
ak3ijCnBpErp22vGgJeCMaQ+ON7WQ3mLNohXXWfb6GewIKMYwgKHeXhAaruAOu1w
MyyskeLthLfpjKBkbdw+pFIO3EUueB6YuNbFBG0sNrwAvLtxZdJ0TEh1HcuOmnbQ
SQRPjya3sULcwq/fDKx+vOHKHQ10LXlKFN064tEObZ4cAa0gIYPARfTrQ+h7LwWH
omR2nk/W4ItiyDPu4mtHgnzV+NRQTn0ELa3n+K1DGUoZ98YOhJk8gyQZv8XLlPfH
6gxD+p2kSokQvwDYWinl/uaoED6+Mc1QWoyyKzrR79Ulgq/ga8YXzTs9pHzNQThH
sXXGHZBvHapAeWjDMxOUNKDc0kn6LaLo/hvbEupCbcVAZk9W38SU32cvAk7+Lu8t
1PDIWTneyiUw+W26ZShBepHsUZJ50gN9D2iPi/dPH/J3Za0WXaw=
=WbSS
-----END PGP SIGNATURE-----
Merge tag 'i2c-for-5.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
"MAINTAINERS rectifications and a few minor driver fixes"
* tag 'i2c-for-5.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: mediatek: Fix an error handling path in mtk_i2c_probe()
i2c: designware: Use standard optional ref clock implementation
MAINTAINERS: core DT include belongs to core
MAINTAINERS: add include/dt-bindings/i2c to I2C SUBSYSTEM HOST DRIVERS
i2c: npcm7xx: Add check for platform_driver_register
MAINTAINERS: Update Synopsys DesignWare I2C to Supported
- Fix a bug where inode flag changes would accidentally drop nrext64.
- Fix a race condition when toggling LARP mode.
-----BEGIN PGP SIGNATURE-----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=vvDX
-----END PGP SIGNATURE-----
Merge tag 'xfs-5.19-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull xfs fixes from Darrick Wong:
"There's not a whole lot this time around (I'm still on vacation) but
here are some important fixes for new features merged in -rc1:
- Fix a bug where inode flag changes would accidentally drop nrext64
- Fix a race condition when toggling LARP mode"
* tag 'xfs-5.19-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
xfs: preserve DIFLAG2_NREXT64 when setting other inode attributes
xfs: fix variable state usage
xfs: fix TOCTOU race involving the new logged xattrs control knob
or error injection. Also fix up how test_dummy_encryption mount
option is handled for the new mount API. Finally, fix/cleanup a
number of comments and ext4 Documentation files.
-----BEGIN PGP SIGNATURE-----
iQEzBAABCAAdFiEEK2m5VNv+CHkogTfJ8vlZVpUNgaMFAmKuYpcACgkQ8vlZVpUN
gaMXwwf8DSHJ3gI2Lo0wrzJm7KSS0C+HK29/rtLCZdxECQsZR156ZzSF3zAFKOwK
Yx3RJwiFxrciUUytY/MWTyalCk+M8oW1093SfRqNNZCbZNi33acnbTqioa7INnDw
snFGGEU1y0M0AUduxNWPr71P80sTyQa0ZplIc4YeR98zzMvoWgi1dvo4wNdtJNQb
Gb0FtBhgP+IeK50eBlK4O0Eg5kqd0V5OeTLUYUfsWqU28ap8dHYE48I6sIdHx6az
sa6b2+YRuBxJUV61FNujuVtkDgUHXtXM97kkGpywRSLjo4iFxlQvX9Ew4lBD9RDI
b0YHVzK/DU9M3VfiYgzGwShCb/M68w==
=NtNY
-----END PGP SIGNATURE-----
Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 fixes from Ted Ts'o:
"Fix a variety of bugs, many of which were found by folks using fuzzing
or error injection.
Also fix up how test_dummy_encryption mount option is handled for the
new mount API.
Finally, fix/cleanup a number of comments and ext4 Documentation
files"
* tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
ext4: fix a doubled word "need" in a comment
ext4: add reserved GDT blocks check
ext4: make variable "count" signed
ext4: correct the judgment of BUG in ext4_mb_normalize_request
ext4: fix bug_on ext4_mb_use_inode_pa
ext4: fix up test_dummy_encryption handling for new mount API
ext4: use kmemdup() to replace kmalloc + memcpy
ext4: fix super block checksum incorrect after mount
ext4: improve write performance with disabled delalloc
ext4: fix warning when submitting superblock in ext4_commit_super()
ext4, doc: remove unnecessary escaping
ext4: fix incorrect comment in ext4_bio_write_page()
fs: fix jbd2_journal_try_to_free_buffers() kernel-doc comment
-----BEGIN PGP SIGNATURE-----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=oBRl
-----END PGP SIGNATURE-----
Merge tag '5.19-rc2-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs client fixes from Steve French:
"Two cifs debugging improvements - one found to deal with debugging a
multichannel problem and one for a recent fallocate issue
This does include the two larger multichannel reconnect (dynamically
adjusting interfaces on reconnect) patches, because we recently found
an additional problem with multichannel to one server type that I want
to include at the same time"
* tag '5.19-rc2-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
cifs: when a channel is not found for server, log its connection id
smb3: add trace point for SMB2_set_eof
We capture a NULL pointer issue when resizing a corrupt ext4 image which
is freshly clear resize_inode feature (not run e2fsck). It could be
simply reproduced by following steps. The problem is because of the
resize_inode feature was cleared, and it will convert the filesystem to
meta_bg mode in ext4_resize_fs(), but the es->s_reserved_gdt_blocks was
not reduced to zero, so could we mistakenly call reserve_backup_gdb()
and passing an uninitialized resize_inode to it when adding new group
descriptors.
mkfs.ext4 /dev/sda 3G
tune2fs -O ^resize_inode /dev/sda #forget to run requested e2fsck
mount /dev/sda /mnt
resize2fs /dev/sda 8G
========
BUG: kernel NULL pointer dereference, address: 0000000000000028
CPU: 19 PID: 3243 Comm: resize2fs Not tainted 5.18.0-rc7-00001-gfde086c5ebfd #748
...
RIP: 0010:ext4_flex_group_add+0xe08/0x2570
...
Call Trace:
<TASK>
ext4_resize_fs+0xbec/0x1660
__ext4_ioctl+0x1749/0x24e0
ext4_ioctl+0x12/0x20
__x64_sys_ioctl+0xa6/0x110
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f2dd739617b
========
The fix is simple, add a check in ext4_resize_begin() to make sure that
the es->s_reserved_gdt_blocks is zero when the resize_inode feature is
disabled.
Cc: stable@kernel.org
Signed-off-by: Zhang Yi <yi.zhang@huawei.com>
Reviewed-by: Ritesh Harjani <ritesh.list@gmail.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20220601092717.763694-1-yi.zhang@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Since dx_make_map() may return -EFSCORRUPTED now, so change "count" to
be a signed integer so we can correctly check for an error code returned
by dx_make_map().
Fixes: 46c116b920eb ("ext4: verify dir block before splitting it")
Cc: stable@kernel.org
Signed-off-by: Ding Xiang <dingxiang@cmss.chinamobile.com>
Link: https://lore.kernel.org/r/20220530100047.537598-1-dingxiang@cmss.chinamobile.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
ext4_mb_normalize_request() can move logical start of allocated blocks
to reduce fragmentation and better utilize preallocation. However logical
block requested as a start of allocation (ac->ac_o_ex.fe_logical) should
always be covered by allocated blocks so we should check that by
modifying and to or in the assertion.
Signed-off-by: Baokun Li <libaokun1@huawei.com>
Reviewed-by: Ritesh Harjani <ritesh.list@gmail.com>
Link: https://lore.kernel.org/r/20220528110017.354175-3-libaokun1@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Hulk Robot reported a BUG_ON:
==================================================================
kernel BUG at fs/ext4/mballoc.c:3211!
[...]
RIP: 0010:ext4_mb_mark_diskspace_used.cold+0x85/0x136f
[...]
Call Trace:
ext4_mb_new_blocks+0x9df/0x5d30
ext4_ext_map_blocks+0x1803/0x4d80
ext4_map_blocks+0x3a4/0x1a10
ext4_writepages+0x126d/0x2c30
do_writepages+0x7f/0x1b0
__filemap_fdatawrite_range+0x285/0x3b0
file_write_and_wait_range+0xb1/0x140
ext4_sync_file+0x1aa/0xca0
vfs_fsync_range+0xfb/0x260
do_fsync+0x48/0xa0
[...]
==================================================================
Above issue may happen as follows:
-------------------------------------
do_fsync
vfs_fsync_range
ext4_sync_file
file_write_and_wait_range
__filemap_fdatawrite_range
do_writepages
ext4_writepages
mpage_map_and_submit_extent
mpage_map_one_extent
ext4_map_blocks
ext4_mb_new_blocks
ext4_mb_normalize_request
>>> start + size <= ac->ac_o_ex.fe_logical
ext4_mb_regular_allocator
ext4_mb_simple_scan_group
ext4_mb_use_best_found
ext4_mb_new_preallocation
ext4_mb_new_inode_pa
ext4_mb_use_inode_pa
>>> set ac->ac_b_ex.fe_len <= 0
ext4_mb_mark_diskspace_used
>>> BUG_ON(ac->ac_b_ex.fe_len <= 0);
we can easily reproduce this problem with the following commands:
`fallocate -l100M disk`
`mkfs.ext4 -b 1024 -g 256 disk`
`mount disk /mnt`
`fsstress -d /mnt -l 0 -n 1000 -p 1`
The size must be smaller than or equal to EXT4_BLOCKS_PER_GROUP.
Therefore, "start + size <= ac->ac_o_ex.fe_logical" may occur
when the size is truncated. So start should be the start position of
the group where ac_o_ex.fe_logical is located after alignment.
In addition, when the value of fe_logical or EXT4_BLOCKS_PER_GROUP
is very large, the value calculated by start_off is more accurate.
Cc: stable@kernel.org
Fixes: cd648b8a8fd5 ("ext4: trim allocation requests to group size")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Baokun Li <libaokun1@huawei.com>
Reviewed-by: Ritesh Harjani <ritesh.list@gmail.com>
Link: https://lore.kernel.org/r/20220528110017.354175-2-libaokun1@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Since ext4 was converted to the new mount API, the test_dummy_encryption
mount option isn't being handled entirely correctly, because the needed
fscrypt_set_test_dummy_encryption() helper function combines
parsing/checking/applying into one function. That doesn't work well
with the new mount API, which split these into separate steps.
This was sort of okay anyway, due to the parsing logic that was copied
from fscrypt_set_test_dummy_encryption() into ext4_parse_param(),
combined with an additional check in ext4_check_test_dummy_encryption().
However, these overlooked the case of changing the value of
test_dummy_encryption on remount, which isn't allowed but ext4 wasn't
detecting until ext4_apply_options() when it's too late to fail.
Another bug is that if test_dummy_encryption was specified multiple
times with an argument, memory was leaked.
Fix this up properly by using the new helper functions that allow
splitting up the parse/check/apply steps for test_dummy_encryption.
Fixes: cebe85d570cf ("ext4: switch to the new mount api")
Signed-off-by: Eric Biggers <ebiggers@google.com>
Link: https://lore.kernel.org/r/20220526040412.173025-1-ebiggers@kernel.org
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
We got issue as follows:
[home]# mount /dev/sda test
EXT4-fs (sda): warning: mounting fs with errors, running e2fsck is recommended
[home]# dmesg
EXT4-fs (sda): warning: mounting fs with errors, running e2fsck is recommended
EXT4-fs (sda): Errors on filesystem, clearing orphan list.
EXT4-fs (sda): recovery complete
EXT4-fs (sda): mounted filesystem with ordered data mode. Quota mode: none.
[home]# debugfs /dev/sda
debugfs 1.46.5 (30-Dec-2021)
Checksum errors in superblock! Retrying...
Reason is ext4_orphan_cleanup will reset ‘s_last_orphan’ but not update
super block checksum.
To solve above issue, defer update super block checksum after
ext4_orphan_cleanup.
Signed-off-by: Ye Bin <yebin10@huawei.com>
Cc: stable@kernel.org
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Ritesh Harjani <ritesh.list@gmail.com>
Link: https://lore.kernel.org/r/20220525012904.1604737-1-yebin10@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
cifs_ses_get_chan_index gets the index for a given server pointer.
When a match is not found, we warn about a possible bug.
However, printing details about the non-matching server could be
more useful to debug here.
Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
load_unaligned_zeropad() can lead to unwanted loads across page boundaries.
The unwanted loads are typically harmless. But, they might be made to
totally unrelated or even unmapped memory. load_unaligned_zeropad()
relies on exception fixup (#PF, #GP and now #VE) to recover from these
unwanted loads.
In TDX guests, the second page can be shared page and a VMM may configure
it to trigger #VE.
The kernel assumes that #VE on a shared page is an MMIO access and tries to
decode instruction to handle it. In case of load_unaligned_zeropad() it
may result in confusion as it is not MMIO access.
Fix it by detecting split page MMIO accesses and failing them.
load_unaligned_zeropad() will recover using exception fixups.
The issue was discovered by analysis and reproduced artificially. It was
not triggered during testing.
[ dhansen: fix up changelogs and comments for grammar and clarity,
plus incorporate Kirill's off-by-one fix]
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Link: https://lkml.kernel.org/r/20220614120135.14812-4-kirill.shutemov@linux.intel.com
- Bugfixes:
- Add FMODE_CAN_ODIRECT support to NFSv4 so opens don't fail
- Fix trunking detection & cl_max_connect setting
- Avoid pnfs_update_layout() livelocks
- Don't keep retrying pNFS if the server replies with NFS4ERR_UNAVAILABLE
-----BEGIN PGP SIGNATURE-----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=nTJk
-----END PGP SIGNATURE-----
Merge tag 'nfs-for-5.19-2' of git://git.linux-nfs.org/projects/anna/linux-nfs
Pull NFS client fixes from Anna Schumaker:
- Add FMODE_CAN_ODIRECT support to NFSv4 so opens don't fail
- Fix trunking detection & cl_max_connect setting
- Avoid pnfs_update_layout() livelocks
- Don't keep retrying pNFS if the server replies with NFS4ERR_UNAVAILABLE
* tag 'nfs-for-5.19-2' of git://git.linux-nfs.org/projects/anna/linux-nfs:
NFSv4: Add FMODE_CAN_ODIRECT after successful open of a NFS4.x file
sunrpc: set cl_max_connect when cloning an rpc_clnt
pNFS: Avoid a live lock condition in pnfs_update_layout()
pNFS: Don't keep retrying if the server replied NFS4ERR_LAYOUTUNAVAILABLE
-----BEGIN PGP SIGNATURE-----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=5y1d
-----END PGP SIGNATURE-----
Merge tag 'pci-v5.19-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull pci fix from Bjorn Helgaas:
"Revert clipping of PCI host bridge windows to avoid E820 regions,
which broke several machines by forcing unnecessary BAR reassignments
(Hans de Goede)"
* tag 'pci-v5.19-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
x86/PCI: Revert "x86/PCI: Clip only host bridge windows for E820 regions"
-----BEGIN PGP SIGNATURE-----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=iiXX
-----END PGP SIGNATURE-----
Merge tag 'printk-for-5.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux
Pull printk fixes from Petr Mladek:
"Make the global console_sem available for CPU that is handling panic()
or shutdown.
This is an old problem when an existing console lock owner might block
console output, but it became more visible with the kthreads"
* tag 'printk-for-5.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux:
printk: Wait for the global console lock when the system is going down
printk: Block console kthreads when direct printing will be required
This reverts commit 4c5e242d3e93.
Prior to 4c5e242d3e93 ("x86/PCI: Clip only host bridge windows for E820
regions"), E820 regions did not affect PCI host bridge windows. We only
looked at E820 regions and avoided them when allocating new MMIO space.
If firmware PCI bridge window and BAR assignments used E820 regions, we
left them alone.
After 4c5e242d3e93, we removed E820 regions from the PCI host bridge
windows before looking at BARs, so firmware assignments in E820 regions
looked like errors, and we moved things around to fit in the space left
(if any) after removing the E820 regions. This unnecessary BAR
reassignment broke several machines.
Guilherme reported that Steam Deck fails to boot after 4c5e242d3e93. We
clipped the window that contained most 32-bit BARs:
BIOS-e820: [mem 0x00000000a0000000-0x00000000a00fffff] reserved
acpi PNP0A08:00: clipped [mem 0x80000000-0xf7ffffff window] to [mem 0xa0100000-0xf7ffffff window] for e820 entry [mem 0xa0000000-0xa00fffff]
which forced us to reassign all those BARs, for example, this NVMe BAR:
pci 0000:00:01.2: PCI bridge to [bus 01]
pci 0000:00:01.2: bridge window [mem 0x80600000-0x806fffff]
pci 0000:01:00.0: BAR 0: [mem 0x80600000-0x80603fff 64bit]
pci 0000:00:01.2: can't claim window [mem 0x80600000-0x806fffff]: no compatible bridge window
pci 0000:01:00.0: can't claim BAR 0 [mem 0x80600000-0x80603fff 64bit]: no compatible bridge window
pci 0000:00:01.2: bridge window: assigned [mem 0xa0100000-0xa01fffff]
pci 0000:01:00.0: BAR 0: assigned [mem 0xa0100000-0xa0103fff 64bit]
All the reassignments were successful, so the devices should have been
functional at the new addresses, but some were not.
Andy reported a similar failure on an Intel MID platform. Benjamin
reported a similar failure on a VMWare Fusion VM.
Note: this is not a clean revert; this revert keeps the later change to
make the clipping dependent on a new pci_use_e820 bool, moving the checking
of this bool to arch_remove_reservations().
[bhelgaas: commit log, add more reporters and testers]
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=216109
Reported-by: Guilherme G. Piccoli <gpiccoli@igalia.com>
Reported-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reported-by: Benjamin Coddington <bcodding@redhat.com>
Reported-by: Jongman Heo <jongman.heo@gmail.com>
Fixes: 4c5e242d3e93 ("x86/PCI: Clip only host bridge windows for E820 regions")
Link: https://lore.kernel.org/r/20220612144325.85366-1-hdegoede@redhat.com
Tested-by: Guilherme G. Piccoli <gpiccoli@igalia.com>
Tested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Benjamin Coddington <bcodding@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
- Revert the moving of the jump labels initialisation before
setup_machine_fdt(). The bug was fixed in drivers/char/random.c.
- Ftrace fixes: branch range check and consistent handling of PLTs.
- Clean rather than invalidate FROM_DEVICE buffers at start of DMA
transfer (safer if such buffer is mapped in user space). A cache
invalidation is done already at the end of the transfer.
- A couple of clean-ups (unexport symbol, remove unused label).
-----BEGIN PGP SIGNATURE-----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=Q14k
-----END PGP SIGNATURE-----
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
- Revert the moving of the jump labels initialisation before
setup_machine_fdt(). The bug was fixed in drivers/char/random.c.
- Ftrace fixes: branch range check and consistent handling of PLTs.
- Clean rather than invalidate FROM_DEVICE buffers at start of DMA
transfer (safer if such buffer is mapped in user space). A cache
invalidation is done already at the end of the transfer.
- A couple of clean-ups (unexport symbol, remove unused label).
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: mm: Don't invalidate FROM_DEVICE buffers at start of DMA transfer
arm64/cpufeature: Unexport set_cpu_feature()
arm64: ftrace: remove redundant label
arm64: ftrace: consistently handle PLTs.
arm64: ftrace: fix branch range checks
Revert "arm64: Initialize jump labels before setup_machine_fdt()"
