Commit Graph

8199 Commits

Author SHA1 Message Date
Ameer Hamza
c23738c70e
zed: Prevent special vdev to be replaced by hot spare
Special vdevs should not be replaced by a hot spare.
Log vdevs already support this, extending the
functionality for special vdevs.

Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ameer Hamza <ahamza@ixsystems.com>
Closes #14129
2022-11-04 11:33:47 -07:00
Alexander Lobakin
73b8f700b6 icp: fix all !ENDBR objtool warnings in x86 Asm code
Currently, only Blake3 x86 Asm code has signs of being ENDBR-aware.
At least, under certain conditions it includes some header file and
uses some custom macro from there.
Linux has its own NOENDBR since several releases ago. It's defined
in the same <asm/linkage.h>, so currently <sys/asm_linkage.h>
already is provided with it.

Let's unify those two into one %ENDBR macro. At first, check if it's
present already. If so -- use Linux kernel version. Otherwise, try
to go that second way and use %_CET_ENDBR from <cet.h> if available.
If no, fall back to just empty definition.
This fixes a couple more 'relocations to !ENDBR' across the module.
And now that we always have the latest/actual ENDBR definition, use
it at the entrance of the few corresponding functions that objtool
still complains about. This matches the way how it's used in the
upstream x86 core Asm code.

Reviewed-by: Attila Fülöp <attila@fueloep.org>
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de>
Reviewed-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Alexander Lobakin <alobakin@pm.me>
Closes #14035
2022-11-04 11:25:56 -07:00
Alexander Lobakin
61cca6fa05 icp: fix rodata being marked as text in x86 Asm code
objtool properly complains that it can't decode some of the
instructions from ICP x86 Asm code. As mentioned in the Makefile,
where those object files were excluded from objtool check (but they
can still be visible under IBT and LTO), those are just constants,
not code.
In that case, they must be placed in .rodata, so they won't be
marked as "allocatable, executable" (ax) in EFL headers and this
effectively prevents objtool from trying to decode this data. That
reveals a whole bunch of other issues in ICP Asm code, as previously
objtool was bailing out after that warning message.

Reviewed-by: Attila Fülöp <attila@fueloep.org>
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de>
Reviewed-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Alexander Lobakin <alobakin@pm.me>
Closes #14035
2022-11-04 11:25:51 -07:00
Alexander Lobakin
b844489ec0 icp: properly fix all RETs in x86_64 Asm code
Commit 43569ee374 ("Fix objtool: missing int3 after ret warning")
addressed replacing all `ret`s in x86 asm code to a macro in the
Linux kernel in order to enable SLS. That was done by copying the
upstream macro definitions and fixed objtool complaints.
Since then, several more mitigations were introduced, including
Rethunk. It requires to have a jump to one of the thunks in order
to work, so the RET macro was changed again. And, as ZFS code
didn't use the mainline defition, but copied it, this is currently
missing.

Objtool reminds about it time to time (Clang 16, CONFIG_RETHUNK=y):

fs/zfs/lua/zlua.o: warning: objtool: setjmp+0x25: 'naked' return
 found in RETHUNK build
fs/zfs/lua/zlua.o: warning: objtool: longjmp+0x27: 'naked' return
 found in RETHUNK build

Do it the following way:
* if we're building under Linux, unconditionally include
  <linux/linkage.h> in the related files. It is available in x86
  sources since even pre-2.6 times, so doesn't need any conftests;
* then, if RET macro is available, it will be used directly, so that
  we will always have the version actual to the kernel we build;
* if there's no such macro, we define it as a simple `ret`, as it
  was on pre-SLS times.

This ensures we always have the up-to-date definition with no need
to update it manually, and at the same time is safe for the whole
variety of kernels ZFS module supports.
Then, there's a couple more "naked" rets left in the code, they're
just defined as:

	.byte 0xf3,0xc3

In fact, this is just:

	rep ret

`rep ret` instead of just `ret` seems to mitigate performance issues
on some old AMD processors and most likely makes no sense as of
today.
Anyways, address those rets, so that they will be protected with
Rethunk and SLS. Include <sys/asm_linkage.h> here which now always
has RET definition and replace those constructs with just RET.
This wipes the last couple of places with unpatched rets objtool's
been complaining about.

Reviewed-by: Attila Fülöp <attila@fueloep.org>
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de>
Reviewed-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Alexander Lobakin <alobakin@pm.me>
Closes #14035
2022-11-04 11:24:09 -07:00
Richard Yao
993ee7a006
FreeBSD: Fix out of bounds read in zfs_ioctl_ozfs_to_legacy()
There is an off by 1 error in the check. Fortunately, this function does
not appear to be used in kernel space, despite being compiled as part of
the kernel module. However, it is used in userspace. Callers of
lzc_ioctl_fd() likely will crash if they attempt to use the
unimplemented request number.

This was reported by FreeBSD's coverity scan.

Reported-by: Coverity (CID 1432059)
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Reviewed-by: Damian Szuberski <szuberskidamian@gmail.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Closes #14135
2022-11-04 11:06:14 -07:00
Serapheim Dimitropoulos
f66ffe6878
Expose zfs_vdev_open_timeout_ms as a tunable
Some of our customers have been occasionally hitting zfs import failures
in Linux because udevd doesn't create the by-id symbolic links in time
for zpool import to use them. The main issue is that the
systemd-udev-settle.service that zfs-import-cache.service and other
services depend on is racy. There is also an openzfs issue filed (see
https://github.com/openzfs/zfs/issues/10891) outlining the problem and
potential solutions.

With the proper solutions being significant in terms of complexity and
the priority of the issue being low for the time being, this patch
exposes `zfs_vdev_open_timeout_ms` as a tunable so people that are
experiencing this issue often can increase it as a workaround.

Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Reviewed-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Don Brady <don.brady@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Serapheim Dimitropoulos <serapheim@delphix.com>
Closes #14133
2022-11-03 15:02:46 -07:00
Allan Jude
595d3ac2ed
Allow mounting snapshots in .zfs/snapshot as a regular user
Rather than doing a terrible credential swapping hack, we just
check that the thing being mounted is a snapshot, and the mountpoint
is the zfsctl directory, then we allow it.

If the mount attempt is from inside a jail, on an unjailed dataset
(mounted from the host, not by the jail), the ability to mount the
snapshot is controlled by a new per-jail parameter: zfs.mount_snapshot

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Co-authored-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: Allan Jude <allan@klarasystems.com>
Sponsored-by: Modirum MDPay
Sponsored-by: Klara Inc.
Closes #13758
2022-11-03 11:53:24 -07:00
Richard Yao
11e3416ae7
Cleanup: Remove branches that always evaluate the same way
Coverity reported that the ASSERT in taskq_create() is always true and
the `*offp > MAXOFFSET_T` check in zfs_file_seek() is always false.

We delete them as cleanup.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Closes #14130
2022-11-03 10:47:48 -07:00
Brooks Davis
1e1ce10e55 Remove an unused variable
Clang-16 detects this set-but-unused variable which is assigned and
incremented, but never referenced otherwise.

Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Reviewed-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Signed-off-by: Brooks Davis <brooks.davis@sri.com>
Closes #14125
2022-11-03 10:17:17 -07:00
Brooks Davis
abb42dc5e1 Make 1-bit bitfields unsigned
This fixes -Wsingle-bit-bitfield-constant-conversion warning from
clang-16 like:

lib/libzfs/libzfs_dataset.c:4529:19: error: implicit truncation
  from 'int' to a one-bit wide bit-field changes value from
  1 to -1 [-Werror,-Wsingle-bit-bitfield-constant-conversion]
                flags.nounmount = B_TRUE;
				^ ~~~~~~

Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Reviewed-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Signed-off-by: Brooks Davis <brooks.davis@sri.com>
Closes #14125
2022-11-03 10:16:16 -07:00
Richard Yao
f47f6a055d
Address warnings about possible division by zero from clangsa
* The complaint in ztest_replay_write() is only possible if something
   went horribly wrong. An assertion will silence this and if it goes
   off, we will know that something is wrong.
 * The complaint in spa_estimate_metaslabs_to_flush() is not impossible,
   but seems very unlikely. We resolve this by passing the value from
   the `MIN()` that does not go to infinity when the variable is zero.

There was a third report from Clang's scan-build, but that was a
definite false positive and disappeared when checked again through
Clang's static analyzer with Z3 refution via CodeChecker.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Closes #14124
2022-11-03 09:58:14 -07:00
Brooks Davis
27d29946be
libuutil: deobfuscate internal pointers
uu_avl and uu_list stored internal next/prev pointers and parent
pointers (unused) obfuscated (byte swapped) to hide them from a long
forgotten leak checker (No one at the 2022 OpenZFS developers meeting
could recall the history.)  This would break on CHERI systems and adds
no obvious value.  Rename the members, use proper types rather than
uintptr_t, and eliminate the related macros.

Reviewed-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Brooks Davis <brooks.davis@sri.com>
Closes #14126
2022-11-03 09:57:05 -07:00
Attila Fülöp
211ec1b9fd
Deny receiving into encrypted datasets if the keys are not loaded
Commit 68ddc06b61 introduced support
for receiving unencrypted datasets as children of encrypted ones but
unfortunately got the logic upside down. This resulted in failing to
deny receives of incremental sends into encrypted datasets without
their keys loaded. If receiving a filesystem, the receive was done
into a newly created unencrypted child dataset of the target. In
case of volumes the receive made the target volume undeletable since
a dataset was created below it, which we obviously can't handle.
Incremental streams with embedded blocks are affected as well.

We fix the broken logic to properly deny receives in such cases.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Attila Fülöp <attila@fueloep.org>
Closes #13598
Closes #14055
Closes #14119
2022-11-03 09:55:13 -07:00
Brooks Davis
84477e148d lua: cast through uintptr_t when return a pointer
Don't assume size_t can carry pointer provenance and use uintptr_t
(identialy on all current platforms) instead.

Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Reviewed-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Signed-off-by: Brooks Davis <brooks.davis@sri.com>
Closes #14131
2022-11-03 09:52:28 -07:00
Brooks Davis
b9041e1f27 Use intptr_t when storing an integer in a pointer
Cast the integer type to (u)intptr_t before casting to "void *".  In
CHERI C/C++ we warn on bare casts from integers to pointers to catch
attempts to create pointers our of thin air.  We allow the warning to be
supressed with a suitable cast through (u)intptr_t.

Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Reviewed-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Signed-off-by: Brooks Davis <brooks.davis@sri.com>
Closes #14131
2022-11-03 09:52:23 -07:00
Brooks Davis
877790001e recvd_props_mode: use a uintptr_t to stash nvlists
Avoid assuming than a uint64_t can hold a pointer.

Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Reviewed-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Signed-off-by: Brooks Davis <brooks.davis@sri.com>
Closes #14131
2022-11-03 09:52:19 -07:00
Brooks Davis
250b2bac78 zfs_onexit_add_cb: make action_handle point to a uintptr_t
Avoid assuming than a uint64_t can hold a pointer and reduce the
number of casts in the process.

Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Reviewed-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Signed-off-by: Brooks Davis <brooks.davis@sri.com>
Closes #14131
2022-11-03 09:52:12 -07:00
Brooks Davis
d96303cb07 acl: use uintptr_t for ace walker cookies
Avoid assuming that a pointer can fit in a uint64_t and use uintptr_t
instead.

Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Reviewed-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Signed-off-by: Brooks Davis <brooks.davis@sri.com>
Closes #14131
2022-11-03 09:51:34 -07:00
Brooks Davis
7309e94239 linux isa_defs.h: Don't define _ALIGNMENT_REQUIRED
Nothing consumes this definition so stop defining it.

Reviewed-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Brooks Davis <brooks.davis@sri.com>
Closes #14128
2022-11-03 09:39:51 -07:00
Brooks Davis
5229071ba1 Improve RISC-V support
Check __riscv_xlen == 64 rather than _LP64 and define _LP64 if missing.

Reviewed-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by:	Brooks Davis <brooks.davis@sri.com>
Closes #14128
2022-11-03 09:39:28 -07:00
Richard Yao
da3d266672
FreeBSD: Fix regression from kmem_scnprintf() in libzfs
kmem_scnprintf() is only available in libzpool. Recent buildbot issues
with showing FreeBSD results kept us from seeing this before
97143b9d31 was merged.

The code has been changed to sanitize the output from `kmem_scnprintf()`.

Reviewed-by: Allan Jude <allan@klarasystems.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Closes #14111
2022-11-01 13:58:17 -07:00
Vince van Oosten
fdc59cf563 include overrides for zfs snapshot/rollback bootfs.service
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Vince van Oosten <techhazard@codeforyouand.me>
Closes #14075
Closes #14076
2022-11-01 12:23:58 -07:00
Vince van Oosten
59ca6e2ad0 include overrides for zfs-import.target
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Vince van Oosten <techhazard@codeforyouand.me>
Closes #14075
Closes #14076
2022-11-01 12:23:51 -07:00
Vince van Oosten
b10f73f78e include systemd overrides to zfs-dracut module
If a user that uses systemd and dracut wants to overide certain
settings, they typically use `systemctl edit [unit]` or place a file in
`/etc/systemd/system/[unit].d/override.conf` directly.

The zfs-dracut module did not include those overrides however, so this
did not have any effect at boot time.

For zfs-import-scan.service and zfs-import-cache.service, overrides are
now included in the dracut initramfs image.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Vince van Oosten <techhazard@codeforyouand.me>
Closes #14075
Closes #14076
2022-11-01 12:23:44 -07:00
Ryan Moeller
748b9d5bda
zil: Relax assertion in zil_parse
Rather than panic debug builds when we fail to parse a whole ZIL, let's
instead improve the logging of errors and continue like in a release
build.

Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ryan Moeller <ryan@iXsystems.com>
Closes #14116
2022-11-01 12:19:32 -07:00
youzhongyang
95055c2ce2
ZTS: rsend_009_pos.ksh is destructive on zfs-on-root system
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Allan Jude <allan@klarasystems.com>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Signed-off-by: Youzhong Yang <yyang@mathworks.com>
Closes #14113
2022-11-01 12:08:37 -07:00
Richard Yao
dcce0dc5f0
Fix oversights from 4170ae4e
4170ae4ea6 was intended to tackle TOCTOU
race conditions reported by CodeQL, but as an oversight, a file
descriptor was not closed and some comments were not updated.
Interestingly, CodeQL did not complain about the file descriptor leak,
so there is room for improvement in how we configure it to try to detect
this issue so that we get early warning about this.

In addition, an optimization opportunity was missed by mistake in
lib/libshare/os/linux/smb.c, which prevented us from truly closing the
TOCTOU race. This was also caught by Coverity.

Reported-by: Coverity (CID 1524424)
Reported-by: Coverity (CID 1526804)
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Closes #14109
2022-10-31 10:01:04 -07:00
Allan Jude
b37d495e04
Avoid null pointer dereference in dsl_fs_ss_limit_check()
Check for cr == NULL before dereferencing it in
dsl_enforce_ds_ss_limits() to lookup the zone/jail ID.

Reported-by: Coverity (CID 1210459)
Reviewed-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Allan Jude <allan@klarasystems.com>
Closes #14103
2022-10-29 13:08:54 -07:00
Richard Yao
97143b9d31 Introduce kmem_scnprintf()
`snprintf()` is meant to protect against buffer overflows, but operating
on the buffer using its return value, possibly by calling it again, can
cause a buffer overflow, because it will return how many characters it
would have written if it had enough space even when it did not. In a
number of places, we repeatedly call snprintf() by successively
incrementing a buffer offset and decrementing a buffer length, by its
return value. This is a potentially unsafe usage of `snprintf()`
whenever the buffer length is reached. CodeQL complained about this.

To fix this, we introduce `kmem_scnprintf()`, which will return 0 when
the buffer is zero or the number of written characters, minus 1 to
exclude the NULL character, when the buffer was too small. In all other
cases, it behaves like snprintf(). The name is inspired by the Linux and
XNU kernels' `scnprintf()`. The implementation was written before I
thought to look at `scnprintf()` and had a good name for it, but it
turned out to have identical semantics to the Linux kernel version.
That lead to the name, `kmem_scnprintf()`.

CodeQL only catches this issue in loops, so repeated use of snprintf()
outside of a loop was not caught. As a result, a thorough audit of the
codebase was done to examine all instances of `snprintf()` usage for
potential problems and a few were caught. Fixes for them are included in
this patch.

Unfortunately, ZED is one of the places where `snprintf()` is
potentially used incorrectly. Since using `kmem_scnprintf()` in it would
require changing how it is linked, we modify its usage to make it safe,
no matter what buffer length is used. In addition, there was a bug in
the use of the return value where the NULL format character was not
being written by pwrite(). That has been fixed.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Closes #14098
2022-10-29 13:05:11 -07:00
Richard Yao
2e08df84d8 Cleanup dump_bookmarks()
Assertions are meant to check assumptions, but the way that this
assertion is written does not check an assumption, since it is provably
always true. Removing the assertion will cause a compiler warning (made
into an error by -Werror) about printing up to 512 bytes to a 256-byte
buffer, so instead, we change the assertion to verify the assumption
that we never do a snprintf() that is truncated to avoid overrunning the
256-byte buffer.

This was caught by an audit of the codebase to look for misuse of
`snprintf()` after CodeQL reported that we had misused `snprintf()`. An
explanation of how snprintf() can be misused is here:

https://www.redhat.com/en/blog/trouble-snprintf

This particular instance did not misuse `snprintf()`, but it was caught
by the audit anyway.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Closes #14098
2022-10-29 13:05:02 -07:00
Richard Yao
d71d693261 Fix too few arguments to formatting function
CodeQL reported that when the VERIFY3U condition is false, we do not
pass enough arguments to `spl_panic()`. This is because the format
string from `snprintf()` was concatenated into the format string for
`spl_panic()`, which causes us to have an unexpected format specifier.

A CodeQL developer suggested fixing the macro to have a `%s` format
string that takes a stringified RIGHT argument, which would fix this.
However, upon inspection, the VERIFY3U check was never necessary in the
first place, so we remove it in favor of just calling `snprintf()`.

Lastly, it is interesting that every other static analyzer run on the
codebase did not catch this, including some that made an effort to catch
such things. Presumably, all of them relied on header annotations, which
we have not yet done on `spl_panic()`. CodeQL apparently is able to
track the flow of arguments on their way to annotated functions, which
llowed it to catch this when others did not. A future patch that I have
in development should annotate `spl_panic()`, so the others will catch
this too.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Closes #14098
2022-10-29 13:04:52 -07:00
Richard Yao
4170ae4ea6 Fix TOCTOU race conditions reported by CodeQL and Coverity
CodeQL and Coverity both complained about:

 * lib/libshare/os/linux/smb.c
 * tests/zfs-tests/cmd/mmapwrite.c
 	* twice
 * tests/zfs-tests/tests/functional/tmpfile/tmpfile_002_pos.c
 * tests/zfs-tests/tests/functional/tmpfile/tmpfile_stat_mode.c
	* coverity had a second complaint that CodeQL did not have
 * tests/zfs-tests/cmd/suid_write_to_file.c
	* Coverity had two complaints and CodeQL had one complaint, both
	  differed. The CodeQL complaint is about the main point of the
	  test, so it is not fixable without a hack involving `fork()`.

The issues reported by CodeQL are fixed, with the exception of the last
one, which is deemed to be a false positive that is too much trouble to
wrokaround. The issues reported by Coverity were only fixed if CodeQL
complained about them.

There were issues reported by Coverity in a number of other files that
were not reported by CodeQL, but fixing the CodeQL complaints is
considered a priority since we want to integrate it into a github
workflow, so the remaining Coverity complaints are left for future work.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Closes #14098
2022-10-29 13:04:10 -07:00
Brian Behlendorf
82ad2a06ac
Revert "Cleanup: Delete dead code from send_merge_thread()"
This reverts commit fb823de9f due to a regression.  It is in fact possible
for the range->eos_marker to be false on error.

Reviewed-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Issue #14042
Closes #14104
2022-10-28 13:25:37 -07:00
Rob N ★
5f0a48c7c9
debug: fix output from VERIFY0 assertion
The previous version reported all the right info, but the VERIFY3 name
made a little more confusing when looking for the matching location in
the source code.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Signed-off-by: Rob N ★ <robn@despairlabs.com>
Closes #14099
2022-10-28 11:46:44 -07:00
Mariusz Zaborski
8af08a69cd
quota: extend quota for dataset
This patch relax the quota limitation for dataset by around 3%.
What this means is that user can write more data then the quota is
set to. However thanks to that we can get more stable bandwidth, in
case when we are overwriting data in-place, and not consuming any
additional space.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Allan Jude <allan@klarasystems.com>
Signed-off-by: Mariusz Zaborski <oshogbo@vexillium.org>
Sponsored-by: Zededa Inc.
Sponsored-by: Klara Inc.
Closes #13839
2022-10-28 11:44:18 -07:00
shodanshok
dc56c673e3
Fix ARC target collapse when zfs_arc_meta_limit_percent=100
Reclaim metadata when arc_available_memory < 0 even if
meta_used is not bigger than arc_meta_limit.

As described in https://github.com/openzfs/zfs/issues/14054 if
zfs_arc_meta_limit_percent=100 then ARC target can collapse to
arc_min due to arc_purge not freeing any metadata.

This patch lets arc_prune to do its work when arc_available_memory
is negative even if meta_used is not bigger than arc_meta_limit,
avoiding ARC target collapse.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Gionatan Danti <g.danti@assyoma.it>
Closes #14054 
Closes #14093
2022-10-28 10:21:54 -07:00
vaclavskala
7822b50f54
Propagate extent_bytes change to autotrim thread
The autotrim thread only reads zfs_trim_extent_bytes_min and
zfs_trim_extent_bytes_max variable only on thread start.  We
should check for parameter changes during thread execution to
allow parameter changes take effect without needing to disable
then restart the autotrim.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Václav Skála <skala@vshosting.cz>
Closes #14077
2022-10-28 10:16:31 -07:00
Aleksa Sarai
dbf6108b4d zfs_rename: support RENAME_* flags
Implement support for Linux's RENAME_* flags (for renameat2). Aside from
being quite useful for userspace (providing race-free ways to exchange
paths and implement mv --no-clobber), they are used by overlayfs and are
thus required in order to use overlayfs-on-ZFS.

In order for us to represent the new renameat2(2) flags in the ZIL, we
create two new transaction types for the two flags which need
transactional-level support (RENAME_EXCHANGE and RENAME_WHITEOUT).
RENAME_NOREPLACE does not need any ZIL support because we know that if
the operation succeeded before creating the ZIL entry, there was no file
to be clobbered and thus it can be treated as a regular TX_RENAME.

Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Pavel Snajdr <snajpa@snajpa.net>
Signed-off-by: Aleksa Sarai <cyphar@cyphar.com>
Closes #12209
Closes #14070
2022-10-28 09:49:20 -07:00
Aleksa Sarai
e015d6cc0b zfs_rename: restructure to have cleaner fallbacks
This is in preparation for RENAME_EXCHANGE and RENAME_WHITEOUT support
for ZoL, but the changes here allow for far nicer fallbacks than the
previous implementation (the source and target are re-linked in case of
the final link failing).

In addition, a small cleanup was done for the "target exists but is a
different type" codepath so that it's more understandable.

Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Aleksa Sarai <cyphar@cyphar.com>
Closes #12209
Closes #14070
2022-10-28 09:48:58 -07:00
Aleksa Sarai
7b3ba29654 debug: add VERIFY_{IMPLY,EQUIV} variants
This allows for much cleaner VERIFY-level assertions.

Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Aleksa Sarai <cyphar@cyphar.com>
Closes #14070
2022-10-28 09:48:43 -07:00
Pavel Snajdr
86db35c447 Remove zpl_revalidate: fix snapshot rollback
Open files, which aren't present in the snapshot, which is being
roll-backed to, need to disappear from the visible VFS image of
the dataset.

Kernel provides d_drop function to drop invalid entry from
the dcache, but inode can be referenced by dentry multiple dentries.

The introduced zpl_d_drop_aliases function walks and invalidates
all aliases of an inode.

Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Pavel Snajdr <snajpa@snajpa.net>
Closes #9600
Closes #14070
2022-10-28 09:47:19 -07:00
Andrew Innes
e09fdda977
Fix multiplication converted to larger type
This fixes the instances of the "Multiplication result converted to 
larger type" alert that codeQL scanning found.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Signed-off-by: Andrew Innes <andrew.c12@gmail.com>
Closes #14094
2022-10-28 09:30:37 -07:00
youzhongyang
5d0fd8429b
Fix zio_flag_t print format
Follow up for 4938d01d which changed zio_flag from enum to uint64_t.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Signed-off-by: Youzhong Yang <yyang@mathworks.com>
Closes #14100
2022-10-28 09:08:12 -07:00
Damian Szuberski
1428ede0ba
Process script directory for all configs
Even when only building kmods process the scripts directory.  This
way the common.sh script will be generated and the zfs.sh script
can be used to load/unload the in-tree kernel modules.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: szubersk <szuberskidamian@gmail.com>
Closes #14027
Closes #14051
2022-10-27 16:45:14 -07:00
Umer Saleem
4d631a509d
Add native Debian Packaging for Linux
Currently, the Debian packages are generated from ALIEN that converts
RPMs to Debian packages. This commit adds native Debian packaging for
Debian based systems.

This packaging is a fork of Debian zfs-linux 2.1.6-2 release.
(source: https://salsa.debian.org/zfsonlinux-team/zfs)

Some updates have been made to keep the footprint minimal that
include removing the tests, translation files, patches directory etc.
All credits go to Debian ZFS on Linux Packaging Team.

For copyright information, please refer to contrib/debian/copyright.

scripts/debian-packaging.sh can be used to invoke the build.

Reviewed-by: Mo Zhou <cdluminate@gmail.com>
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: Umer Saleem <usaleem@ixsystems.com>
Closes #13451
2022-10-27 15:38:45 -07:00
Richard Yao
4938d01db7
Convert enum zio_flag to uint64_t
We ran out of space in enum zio_flag for additional flags. Rather than
introduce enum zio_flag2 and then modify a bunch of functions to take a
second flags variable, we expand the type to 64 bits via `typedef
uint64_t zio_flag_t`.

Reviewed-by: Allan Jude <allan@klarasystems.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Richard Yao <richard.yao@klarasystems.com>
Signed-off-by: Allan Jude <allan@klarasystems.com>
Co-authored-by: Richard Yao <richard.yao@klarasystems.com>
Closes #14086
2022-10-27 09:54:54 -07:00
Richard Yao
c8ae0ca11a
Add CodeQL workflow
CodeQL is a static analyzer from github with a very low false positive
rate. We have long wanted to have static analysis runs done on every
pull request and using CodeQL, we can.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Andrew Innes <andrew.c12@gmail.com>
Signed-off-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Closes #14087
2022-10-27 09:36:17 -07:00
Andrew Innes
07de86923b
Aligned free for aligned alloc
Windows port frees memory that was alloc'd aligned in a different way
then alloc'd memory.  So changing frees to be specific.

Reviewed-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Andrew Innes <andrew.c12@gmail.com>
Co-Authored-By: Jorgen Lundman <lundman@lundman.net>
Closes #14059
2022-10-26 15:08:31 -07:00
Andriy Gapon
41133c9794
FreeBSD: vn_flush_cached_data: observe vnode locking contract
vm_object_page_clean() expects that the associated vnode is locked
as VOP_PUTPAGES() may get called on the vnode.

Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: Andriy Gapon <avg@FreeBSD.org>
Closes #14079
2022-10-26 15:00:58 -07:00
Richard Yao
eeddd80572
Silence objtool warnings from 55d7afa4
The use of __noreturn__ in 55d7afa4ad on
spl_panic() caused objtool warnings on Linux when the kernel is built
with CONFIG_STACK_VALIDATION=y. This patch works around that by
restricting the application of __noreturn__ to builds for static
analyzers.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Closes #14068
2022-10-26 14:57:37 -07:00