tjh.dev
Linux kernel
============
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In order to build the documentation, use ``make htmldocs`` or
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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.
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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Pull ksmbd fixes from Steve French:
"Five fixes for the ksmbd kernel server, including three security
fixes:
- remove follow symlinks support
- use LOOKUP_BENEATH to prevent out of share access
- SMB3 compounding security fix
- fix for returning the default streams correctly, fixing a bug when
writing ppt or doc files from some clients
- logging more clearly that ksmbd is experimental (at module load
time)"
* tag '5.15-rc2-ksmbd-fixes' of git://git.samba.org/ksmbd:
ksmbd: use LOOKUP_BENEATH to prevent the out of share access
ksmbd: remove follow symlinks support
ksmbd: check protocol id in ksmbd_verify_smb_message()
ksmbd: add default data stream name in FILE_STREAM_INFORMATION
ksmbd: log that server is experimental at module load
Pull EDAC fixes from Borislav Petkov:
"Fix two EDAC drivers using the wrong value type for the DIMM mode"
* tag 'edac_urgent_for_v5.15_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras:
EDAC/dmc520: Assign the proper type to dimm->edac_mode
EDAC/synopsys: Fix wrong value type assignment for edac_mode
instead of removing '..' in a given path, call
kern_path with LOOKUP_BENEATH flag to prevent
the out of share access.
ran various test on this:
smb2-cat-async smb://127.0.0.1/homes/../out_of_share
smb2-cat-async smb://127.0.0.1/homes/foo/../../out_of_share
smbclient //127.0.0.1/homes -c "mkdir ../foo2"
smbclient //127.0.0.1/homes -c "rename bar ../bar"
Cc: Ronnie Sahlberg <ronniesahlberg@gmail.com>
Cc: Ralph Boehme <slow@samba.org>
Tested-by: Steve French <smfrench@gmail.com>
Tested-by: Namjae Jeon <linkinjeon@kernel.org>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Pull thermal fixes from Daniel Lezcano:
- Fix thermal shutdown after a suspend/resume due to a wrong TCC value
restored on Intel platform (Antoine Tenart)
- Fix potential buffer overflow when building the list of policies. The
buffer size is not updated after writing to it (Dan Carpenter)
- Fix wrong check against IS_ERR instead of NULL (Ansuel Smith)
* tag 'thermal-v5.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux:
thermal/drivers/tsens: Fix wrong check for tzd in irq handlers
thermal/core: Potential buffer overflow in thermal_build_list_of_policies()
thermal/drivers/int340x: Do not set a wrong tcc offset on resume
dimm->edac_mode contains values of type enum edac_type - not the
corresponding capability flags. Fix that.
Fixes: 1088750d7839 ("EDAC: Add EDAC driver for DMC520")
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: <stable@vger.kernel.org>
Link: https://lkml.kernel.org/r/20210916085258.7544-1-bp@alien8.de
Use LOOKUP_NO_SYMLINKS flags for default lookup to prohibit the middle of
symlink component lookup and remove follow symlinks parameter support.
We re-implement it as reparse point later.
Test result:
smbclient -Ulinkinjeon%1234 //172.30.1.42/share -c
"get hacked/passwd passwd"
NT_STATUS_OBJECT_NAME_NOT_FOUND opening remote file \hacked\passwd
Cc: Ralph Böhme <slow@samba.org>
Cc: Steve French <smfrench@gmail.com>
Acked-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Pull x86 fixes from Thomas Gleixner:
"A set of fixes for X86:
- Prevent sending the wrong signal when protection keys are enabled
and the kernel handles a fault in the vsyscall emulation.
- Invoke early_reserve_memory() before invoking e820_memory_setup()
which is required to make the Xen dom0 e820 hooks work correctly.
- Use the correct data type for the SETZ operand in the EMQCMDS
instruction wrapper.
- Prevent undefined behaviour to the potential unaligned accesss in
the instruction decoder library"
* tag 'x86-urgent-2021-09-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/insn, tools/x86: Fix undefined behavior due to potential unaligned accesses
x86/asm: Fix SETZ size enqcmds() build failure
x86/setup: Call early_reserve_memory() earlier
x86/fault: Fix wrong signal when vsyscall fails with pkey
Some devices can have some thermal sensors disabled from the
factory. The current two irq handler functions check all the sensor by
default and the check if the sensor was actually registered is
wrong. The tzd is actually never set if the registration fails hence
the IS_ERR check is wrong.
Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210907212543.20220-1-ansuelsmth@gmail.com
dimm->edac_mode contains values of type enum edac_type - not the
corresponding capability flags. Fix that.
Issue caught by Coverity check "enumerated type mixed with another
type."
[ bp: Rewrite commit message, add tags. ]
Fixes: ae9b56e3996d ("EDAC, synps: Add EDAC support for zynq ddr ecc controller")
Signed-off-by: Sai Krishna Potthuri <lakshmi.sai.krishna.potthuri@xilinx.com>
Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: <stable@vger.kernel.org>
Link: https://lkml.kernel.org/r/20210818072315.15149-1-shubhrajyoti.datta@xilinx.com
When second smb2 pdu has invalid protocol id, ksmbd doesn't detect it
and allow to process smb2 request. This patch add the check it in
ksmbd_verify_smb_message() and don't use protocol id of smb2 request as
protocol id of response.
Reviewed-by: Ronnie Sahlberg <ronniesahlberg@gmail.com>
Reviewed-by: Ralph Böhme <slow@samba.org>
Reported-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Pull timer fix from Thomas Gleixner:
"A single fix for the recently introduced regression in posix CPU
timers which failed to stop the timer when requested. That caused
unexpected signals to be sent to the process/thread causing
malfunction"
* tag 'timers-urgent-2021-09-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
posix-cpu-timers: Prevent spuriously armed 0-value itimer
Don't perform unaligned loads in __get_next() and __peek_nbyte_next() as
these are forms of undefined behavior:
"A pointer to an object or incomplete type may be converted to a pointer
to a different object or incomplete type. If the resulting pointer
is not correctly aligned for the pointed-to type, the behavior is
undefined."
(from http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1256.pdf)
These problems were identified using the undefined behavior sanitizer
(ubsan) with the tools version of the code and perf test.
[ bp: Massage commit message. ]
Signed-off-by: Numfor Mbiziwo-Tiapo <nums@google.com>
Signed-off-by: Ian Rogers <irogers@google.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Link: https://lkml.kernel.org/r/20210923161843.751834-1-irogers@google.com
After printing the list of thermal governors, then this function prints
a newline character. The problem is that "size" has not been updated
after printing the last governor. This means that it can write one
character (the NUL terminator) beyond the end of the buffer.
Get rid of the "size" variable and just use "PAGE_SIZE - count" directly.
Fixes: 1b4f48494eb2 ("thermal: core: group functions related to governor handling")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210916131342.GB25094@kili
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