A later patch will require a sleepable context in the idle worker timeout
function. Converting worker_pool.idle_timer to a delayed_work gives us just
that, however this would imply turning all idle_timer expiries into
scheduler events (waking up a worker to handle the dwork).

Instead, implement a "custom dwork" where the timer callback does some
extra checks before queuing the associated work.

No change in functionality intended.

Signed-off-by: Valentin Schneider <vschneid@redhat.com>
Reviewed-by: Lai Jiangshan <jiangshanlai@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

Later patches will reuse this code, move it into reusable functions.

Signed-off-by: Valentin Schneider <vschneid@redhat.com>
Reviewed-by: Lai Jiangshan <jiangshanlai@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

When unbind_workers() reads wq_unbound_cpumask to set the affinity of
freshly-unbound kworkers, it only holds wq_pool_attach_mutex. This isn't
sufficient as wq_unbound_cpumask is only protected by wq_pool_mutex.

Make wq_unbound_cpumask protected with wq_pool_attach_mutex and also
remove the need of temporary saved_cpumask.

Fixes: 10a5a651

 ("workqueue: Restrict kworker in the offline CPU pool running on housekeeping CPUs")
Reported-by: Valentin Schneider <vschneid@redhat.com>
Signed-off-by: Lai Jiangshan <jiangshan.ljs@antgroup.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

The show_pwq() function dumps out a pool_workqueue structure's activity,
including the pending work-queue handlers:

 Showing busy workqueues and worker pools:
 workqueue events: flags=0x0
   pwq 0: cpus=0 node=0 flags=0x1 nice=0 active=10/256 refcnt=11
     in-flight: 7:test_work_func, 64:test_work_func, 249:test_work_func
     pending: test_work_func, test_work_func, test_work_func1, test_work_func1, test_work_func1, test_work_func1, test_work_func1

When large systems are facing certain types of hang conditions, it is not
unusual for this "pending" list to contain runs of hundreds of identical
function names.  This "wall of text" is difficult to read, and worse yet,
it can be interleaved with other output such as stack traces.

Therefore, make show_pwq() use run-length encoding so that the above
printout instead looks like this:

 Showing busy workqueues and worker pools:
 workqueue events: flags=0x0
   pwq 0: cpus=0 node=0 flags=0x1 nice=0 active=10/256 refcnt=11
     in-flight: 7:test_work_func, 64:test_work_func, 249:test_work_func
     pending: 2*test_work_func, 5*test_work_func1

When no comma would be printed, including the WORK_STRUCT_LINKED case,
a new run is started unconditionally.

This output is more readable, places less stress on the hardware,
firmware, and software on the console-log path, and reduces interference
with other output.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Lai Jiangshan <jiangshanlai@gmail.com>
Cc: Dave Jones <davej@codemonkey.org.uk>
Cc: Rik van Riel <riel@surriel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

Currently if the user queues a new work item unintentionally
into a wq after the destroy_workqueue(wq), the work still can
be queued and scheduled without any noticeable kernel message
before the end of a RCU grace period.

As a debug-aid facility, this commit adds a new flag
__WQ_DESTROYING to spot that issue by triggering a kernel WARN
message.

Signed-off-by: Richard Clark <richard.xnu.clark@gmail.com>
Reviewed-by: Lai Jiangshan <jiangshanlai@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

Pull misc x86 fixes from Ingo Molnar:
 "Fix a double-free bug, a binutils warning, a header namespace clash
  and a bug in ib_prctl_set()"

* tag 'x86-urgent-2023-01-04' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/bugs: Flush IBP in ib_prctl_set()
  x86/insn: Avoid namespace clash by separating instruction decoder MMIO type from MMIO trace type
  x86/asm: Fix an assembler warning with current binutils
  x86/kexec: Fix double-free of elf header buffer

Pull f2fs fixes from Jaegeuk Kim:

 - fix a null pointer dereference in f2fs_issue_flush, which occurs by
   the combination of mount/remount options.

 - fix a bug in per-block age-based extent_cache newly introduced in
   6.2-rc1, which reported a wrong age information in extent_cache.

 - fix a kernel panic if extent_tree was not created, which was caught
   by a wrong BUG_ON

* tag 'f2fs-fix-6.2-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs:
  f2fs: let's avoid panic if extent_tree is not created
  f2fs: should use a temp extent_info for lookup
  f2fs: don't mix to use union values in extent_info
  f2fs: initialize extent_cache parameter
  f2fs: fix to avoid NULL pointer dereference in f2fs_issue_flush()

Pull nfsd fixes from Chuck Lever:

 - Fix a filecache UAF during NFSD shutdown

 - Avoid exposing automounted mounts on NFS re-exports

* tag 'nfsd-6.2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux:
  nfsd: fix handling of readdir in v4root vs. mount upcall timeout
  nfsd: shut down the NFSv4 state objects before the filecache

We missed the window between the TIF flag update and the next reschedule.

Signed-off-by: Rodrigo Branco <bsdaemon@google.com>
Reviewed-by: Borislav Petkov (AMD) <bp@alien8.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: <stable@vger.kernel.org>

Both <linux/mmiotrace.h> and <asm/insn-eval.h> define various MMIO_ enum constants,
whose namespace overlaps.

Rename the <asm/insn-eval.h> ones to have a INSN_ prefix, so that the headers can be
used from the same source file.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20230101162910.710293-2-Jason@zx2c4.com

This patch avoids the below panic.

pc : __lookup_extent_tree+0xd8/0x760
lr : f2fs_do_write_data_page+0x104/0x87c
sp : ffffffc010cbb3c0
x29: ffffffc010cbb3e0 x28: 0000000000000000
x27: ffffff8803e7f020 x26: ffffff8803e7ed40
x25: ffffff8803e7f020 x24: ffffffc010cbb460
x23: ffffffc010cbb480 x22: 0000000000000000
x21: 0000000000000000 x20: ffffffff22e90900
x19: 0000000000000000 x18: ffffffc010c5d080
x17: 0000000000000000 x16: 0000000000000020
x15: ffffffdb1acdbb88 x14: ffffff888759e2b0
x13: 0000000000000000 x12: ffffff802da49000
x11: 000000000a001200 x10: ffffff8803e7ed40
x9 : ffffff8023195800 x8 : ffffff802da49078
x7 : 0000000000000001 x6 : 0000000000000000
x5 : 0000000000000006 x4 : ffffffc010cbba28
x3 : 0000000000000000 x2 : ffffffc010cbb480
x1 : 0000000000000000 x0 : ffffff8803e7ed40
Call trace:
 __lookup_extent_tree+0xd8/0x760
 f2fs_do_write_data_page+0x104/0x87c
 f2fs_write_single_data_page+0x420/0xb60
 f2fs_write_cache_pages+0x418/0xb1c
 __f2fs_write_data_pages+0x428/0x58c
 f2fs_write_data_pages+0x30/0x40
 do_writepages+0x88/0x190
 __writeback_single_inode+0x48/0x448
 writeback_sb_inodes+0x468/0x9e8
 __writeback_inodes_wb+0xb8/0x2a4
 wb_writeback+0x33c/0x740
 wb_do_writeback+0x2b4/0x400
 wb_workfn+0xe4/0x34c
 process_one_work+0x24c/0x5bc
 worker_thread+0x3e8/0xa50
 kthread+0x150/0x1b4

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

Otherwise, __lookup_extent_tree() will override the given extent_info which will
be used by caller.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

Let's explicitly use the defined values in block_age case only.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

This can avoid confusing tracepoint values.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

With below two cases, it will cause NULL pointer dereference when
accessing SM_I(sbi)->fcc_info in f2fs_issue_flush().

a) If kthread_run() fails in f2fs_create_flush_cmd_control(), it will
release SM_I(sbi)->fcc_info,

- mount -o noflush_merge /dev/vda /mnt/f2fs
- mount -o remount,flush_merge /dev/vda /mnt/f2fs  -- kthread_run() fails
- dd if=/dev/zero of=/mnt/f2fs/file bs=4k count=1 conv=fsync

b) we will never allocate memory for SM_I(sbi)->fcc_info w/ below
testcase,

- mount -o ro /dev/vda /mnt/f2fs
- mount -o rw,remount /dev/vda /mnt/f2fs
- dd if=/dev/zero of=/mnt/f2fs/file bs=4k count=1 conv=fsync

In order to fix this issue, let change as below:
- fix error path handling in f2fs_create_flush_cmd_control().
- allocate SM_I(sbi)->fcc_info even if readonly is on.

Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

Fix a warning: "found `movsd'; assuming `movsl' was meant"

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: linux-kernel@vger.kernel.org

Pull btrfs fixes from David Sterba:
 "First batch of regression and regular fixes:

   - regressions:
       - fix error handling after conversion to qstr for paths
       - fix raid56/scrub recovery caused by uninitialized variable
         after conversion to error bitmaps
       - restore qgroup backref lookup behaviour after recent
         refactoring
       - fix leak of device lists at module exit time

   - fix resolving backrefs for inline extent followed by prealloc

   - reset defrag ioctl buffer on memory allocation error"

* tag 'for-6.2-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  btrfs: fix fscrypt name leak after failure to join log transaction
  btrfs: scrub: fix uninitialized return value in recover_scrub_rbio
  btrfs: fix resolving backrefs for inline extent followed by prealloc
  btrfs: fix trace event name typo for FLUSH_DELAYED_REFS
  btrfs: restore BTRFS_SEQ_LAST when looking up qgroup backref lookup
  btrfs: fix leak of fs devices after removing btrfs module
  btrfs: fix an error handling path in btrfs_defrag_leaves()
  btrfs: fix an error handling path in btrfs_rename()

syzbot is reporting hung task at do_user_addr_fault() [1], for there is
a silent deadlock between PG_locked bit and ni_lock lock.

Since filemap_update_page() calls filemap_read_folio() after calling
folio_trylock() which will set PG_locked bit, ntfs_truncate() must not
call truncate_setsize() which will wait for PG_locked bit to be cleared
when holding ni_lock lock.

Link: https://lore.kernel.org/all/00000000000060d41f05f139aa44@google.com/
Link: https://syzkaller.appspot.com/bug?extid=bed15dbf10294aa4f2ae

 [1]
Reported-by: syzbot <syzbot+bed15dbf10294aa4f2ae@syzkaller.appspotmail.com>
Debugged-by: Linus Torvalds <torvalds@linux-foundation.org>
Co-developed-by: Hillf Danton <hdanton@sina.com>
Signed-off-by: Hillf Danton <hdanton@sina.com>
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Fixes: 4342306f

 ("fs/ntfs3: Add file operations and implementation")
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

After

  b3e34a47 ("x86/kexec: fix memory leak of elf header buffer"),

freeing image->elf_headers in the error path of crash_load_segments()
is not needed because kimage_file_post_load_cleanup() will take
care of that later. And not clearing it could result in a double-free.

Drop the superfluous vfree() call at the error path of
crash_load_segments().

Fixes: b3e34a47

 ("x86/kexec: fix memory leak of elf header buffer")
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Acked-by: Baoquan He <bhe@redhat.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: <stable@kernel.org>
Link: https://lore.kernel.org/r/20221122115122.13937-1-tiwai@suse.de

If v4 READDIR operation hits a mountpoint and gets back an error,
then it will include that entry in the reply and set RDATTR_ERROR for it
to the error.

That's fine for "normal" exported filesystems, but on the v4root, we
need to be more careful to only expose the existence of dentries that
lead to exports.

If the mountd upcall times out while checking to see whether a
mountpoint on the v4root is exported, then we have no recourse other
than to fail the whole operation.

Cc: Steve Dickson <steved@redhat.com>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=216777


Reported-by: JianHong Yin <yin-jianhong@163.com>
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Cc: <stable@vger.kernel.org>

Pull perf fixes from Borislav Petkov:

 - Pass only an initialized perf event attribute to the LSM hook

 - Fix a use-after-free on the perf syscall's error path

 - A potential integer overflow fix in amd_core_pmu_init()

 - Fix the cgroup events tracking after the context handling rewrite

 - Return the proper value from the inherit_event() function on error

* tag 'perf_urgent_for_v6.2_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/core: Call LSM hook after copying perf_event_attr
  perf: Fix use-after-free in error path
  perf/x86/amd: fix potential integer overflow on shift of a int
  perf/core: Fix cgroup events tracking
  perf core: Return error pointer if inherit_event() fails to find pmu_ctx

Pull x86 fixes from Borislav Petkov:

 - Two fixes to correct how kprobes handles INT3 now that they're added
   by other functionality like the rethunks and not only kgdb

 - Remove __init section markings of two functions which are referenced
   by a function in the .text section

* tag 'x86_urgent_for_v6.2_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/kprobes: Fix optprobe optimization check with CONFIG_RETHUNK
  x86/kprobes: Fix kprobes instruction boudary check with CONFIG_RETHUNK
  x86/calldepth: Fix incorrect init section references

Pull locking fixes from Borislav Petkov:

 - Prevent the leaking of a debug timer in futex_waitv()

 - A preempt-RT mutex locking fix, adding the proper acquire semantics

* tag 'locking_urgent_for_v6.2_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  futex: Fix futex_waitv() hrtimer debug object leak on kcalloc error
  rtmutex: Add acquire semantics for rtmutex lock acquisition slow path

Pull drm fixes from Daniel Vetter:
 "I'm just back from the mountains, and Dave is out at the beach and
  should be back in a week again. Just i915 fixes and since Rodrigo
  bothered to make the pull last week I figured I should warm up gpg and
  forward this in a nice signed tag as a new years present!

   - i915 fixes for newer platforms

   - i915 locking rework to not give up in vm eviction fallback path too
     early"

* tag 'drm-fixes-2023-01-01' of git://anongit.freedesktop.org/drm/drm:
  drm/i915/dsi: fix MIPI_BKLT_EN_1 native GPIO index
  drm/i915/dsi: add support for ICL+ native MIPI GPIO sequence
  drm/i915/uc: Fix two issues with over-size firmware files
  drm/i915: improve the catch-all evict to handle lock contention
  drm/i915: Remove __maybe_unused from mtl_info
  drm/i915: fix TLB invalidation for Gen12.50 video and compute engines

Merge tag 'drm-intel-fixes-2022-12-30' of git://anongit.freedesktop.org/drm/drm-intel

 into drm-fixes

- fix TLB invalidation for DG2 and newer platforms. (Andrzej)
- Remove __maybe_unused from mtl_info (Lucas)
- improve the catch-all evict to handle lock contention (Matt Auld)
- Fix two issues with over-size (GuC/HuC) firmware files (John)
- Fix DSI resume issues on ICL+ (Jani)

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/Y662ijDHrZCjTFla@intel.com

Merge tag 'kbuild-fixes-v6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild fixes from Masahiro Yamada:

 - Fix broken BuildID

 - Add srcrpm-pkg to the help message

 - Fix the option order for modpost built with musl libc

 - Fix the build dependency of rpm-pkg for openSUSE

* tag 'kbuild-fixes-v6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  fixdep: remove unneeded <stdarg.h> inclusion
  kbuild: sort single-targets alphabetically again
  kbuild: rpm-pkg: add libelf-devel as alternative for BuildRequires
  kbuild: Fix running modpost with musl libc
  kbuild: add a missing line for help message
  .gitignore: ignore *.rpm
  arch: fix broken BuildID for arm64 and riscv
  kconfig: Add static text for search information in help menu

Pull ata fix from Damien Le Moal:
 "A single fix to address an issue with wake from suspend with PCS
  adapters, from Adam"

* tag 'ata-6.2-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata:
  ata: ahci: Fix PCS quirk application for suspend

Pull ACPI fixes from Rafael Wysocki:
 "These are new ACPI IRQ override quirks, low-power S0 idle (S0ix)
  support adjustments and ACPI backlight handling fixes, mostly for
  platforms using AMD chips.

  Specifics:

   - Add ACPI IRQ override quirks for Asus ExpertBook B2502, Lenovo
     14ALC7, and XMG Core 15 (Hans de Goede, Adrian Freund, Erik
     Schumacher).

   - Adjust ACPI video detection fallback path to prevent
     non-operational ACPI backlight devices from being created on
     systems where the native driver does not detect a suitable panel
     (Mario Limonciello).

   - Fix Apple GMUX backlight detection (Hans de Goede).

   - Add a low-power S0 idle (S0ix) handling quirk for HP Elitebook 865
     and stop using AMD-specific low-power S0 idle code path for systems
     with Rembrandt chips and newer (Mario Limonciello)"

* tag 'acpi-6.2-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI: x86: s2idle: Stop using AMD specific codepath for Rembrandt+
  ACPI: x86: s2idle: Force AMD GUID/_REV 2 on HP Elitebook 865
  ACPI: video: Fix Apple GMUX backlight detection
  ACPI: resource: Add Asus ExpertBook B2502 to Asus quirks
  ACPI: resource: do IRQ override on Lenovo 14ALC7
  ACPI: resource: do IRQ override on XMG Core 15
  ACPI: video: Don't enable fallback path for creating ACPI backlight by default
  drm/amd/display: Report to ACPI video if no panels were found
  ACPI: video: Allow GPU drivers to report no panels

Pull sound fixes from Takashi Iwai:
 "Just a few small fixes:

   - A regression fix for HDMI audio on HD-audio AMD codecs

   - Fixes for LINE6 MIDI handling

   - HD-audio quirk for Dell laptops"

* tag 'sound-6.2-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda/hdmi: Static PCM mapping again with AMD HDMI codecs
  ALSA: hda/realtek: Apply dual codec fixup for Dell Latitude laptops
  ALSA: line6: fix stack overflow in line6_midi_transmit
  ALSA: line6: correct midi status byte when receiving data from podxt

Merge ACPI resource handling quirks and ACPI backlight handling fixes
for 6.2-rc2:

 - Add ACPI IRQ override quirks for Asus ExpertBook B2502, Lenovo
   14ALC7, and XMG Core 15 (Hans de Goede, Adrian Freund,  Erik
   Schumacher).

 - Adjust ACPI video detection fallback path to prevent non-operational
   ACPI backlight devices from being created on systems where the native
   driver does not detect a suitable panel (Mario Limonciello).

 - Fix Apple GMUX backlight detection (Hans de Goede).

* acpi-resource:
  ACPI: resource: Add Asus ExpertBook B2502 to Asus quirks
  ACPI: resource: do IRQ override on Lenovo 14ALC7
  ACPI: resource: do IRQ override on XMG Core 15

* acpi-video:
  ACPI: video: Fix Apple GMUX backlight detection
  ACPI: video: Don't enable fallback path for creating ACPI backlight by default
  drm/amd/display: Report to ACPI video if no panels were found
  ACPI: video: Allow GPU drivers to report no panels

Due to copy-paste fail, MIPI_BKLT_EN_1 would always use PPS index 1,
never 0. Fix the sloppiest commit in recent memory.

Fixes: 963bbdb3

 ("drm/i915/dsi: add support for ICL+ native MIPI GPIO sequence")
Reported-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221220140105.313333-1-jani.nikula@intel.com
(cherry picked from commit a561933c

)
Cc: stable@vger.kernel.org # 6.1
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

Starting from ICL, the default for MIPI GPIO sequences seems to be using
native GPIOs i.e. GPIOs available in the GPU. These native GPIOs reuse
many pins that quite frankly seem scary to poke based on the VBT
sequences. We pretty much have to trust that the board is configured
such that the relevant HPD, PP_CONTROL and GPIO bits aren't used for
anything else.

MIPI sequence v4 also adds a flag to fall back to non-native sequences.

v5:
- Wrap SHOTPLUG_CTL_DDI modification in spin_lock() in icp_irq_handler()
  too (Ville)
- References instead of Closes issue 6131 because this does not fix everything

v4:
- Wrap SHOTPLUG_CTL_DDI modification in spin_lock_irq() (Ville)

v3:
- Fix -Wbitwise-conditional-parentheses (kernel test robot <lkp@intel.com>)

v2:
- Fix HPD pin output set (impacts GPIOs 0 and 5)
- Fix GPIO data output direction set (impacts GPIOs 4 and 9)
- Reduce register accesses to single intel_de_rwm()

References: https://gitlab.freedesktop.org/drm/intel/-/issues/6131


Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221219105955.4014451-1-jani.nikula@intel.com
(cherry picked from commit f087cfe6

)
Cc: stable@vger.kernel.org # 6.1
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

This is unneeded since commit 69304379

 ("fixdep: use fflush() and
ferror() to ensure successful write to files").

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>

This was previously alphabetically sorted. Sort it again.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Miguel Ojeda <ojeda@kernel.org>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>

Guoqing Jiang reports that openSUSE cannot compile the kernel rpm due
to "BuildRequires: elfutils-libelf-devel" added by commit 8818039f
("kbuild: add ability to make source rpm buildable using koji").
The relevant package name in openSUSE is libelf-devel.

Add it as an alternative package.

BTW, if it is impossible to solve the build requirement, the final
resort would be:

    $ make RPMOPTS=--nodeps rpm-pkg

This passes --nodeps to the rpmbuild command so it will not verify
build dependencies. This is useful to test rpm builds on non-rpm
system. On Debian/Ubuntu, for example, you can install rpmbuild by
'apt-get install rpm'.

NOTE1:
  Likewise, it is possible to bypass the build dependency check for
  debian package builds:

    $ make DPKG_FLAGS=-d deb-pkg

NOTE2:
  The 'or' operator is supported since RPM 4.13. So, old distros such
  as CentOS 7 will break. I suggest installing newer rpmbuild in such
  cases.

Link: https://lore.kernel.org/linux-kbuild/ee227d24-9c94-bfa3-166a-4ee6b5dfea09@linux.dev/T/#u
Fixes: 8818039f

 ("kbuild: add ability to make source rpm buildable using koji")
Reported-by: Guoqing Jiang <guoqing.jiang@linux.dev>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Tested-by: Guoqing Jiang <guoqing.jiang@linux.dev>
Acked-by: Jonathan Toppins <jtoppins@redhat.com>

commit 3d57e1b7 ("kbuild: refactor the prerequisites of the modpost
rule") moved 'vmlinux.o' inside modpost-args, possibly before some of
the other options. However, getopt() in musl libc follows POSIX and
stops looking for options upon reaching the first non-option argument.
As a result, the '-T' option is misinterpreted as a positional argument,
and the build fails:

  make -f ./scripts/Makefile.modpost
     scripts/mod/modpost   -E   -o Module.symvers vmlinux.o -T modules.order
  -T: No such file or directory
  make[1]: *** [scripts/Makefile.modpost:137: Module.symvers] Error 1
  make: *** [Makefile:1960: modpost] Error 2

The fix is to move all options before 'vmlinux.o' in modpost-args.

Fixes: 3d57e1b7

 ("kbuild: refactor the prerequisites of the modpost rule")
Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>

The help message line for building the source RPM package was missing.
Added it.

Signed-off-by: Jun ASAKA <JunASAKA@zzy040330.moe>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>

Previously, *.rpm files were created under $HOME/rpmbuild/, but since
commit 8818039f

 ("kbuild: add ability to make source rpm buildable
using koji"), srcrpm-pkg creates the source rpm in the kernel tree
because it sets '_srcrpmdir'.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>

Dennis Gilmore reports that the BuildID is missing in the arm64 vmlinux
since commit 994b7ac1 ("arm64: remove special treatment for the
link order of head.o").

The issue is that the type of .notes section, which contains the BuildID,
changed from NOTES to PROGBITS.

Ard Biesheuvel figured out that whichever object gets linked first gets
to decide the type of a section. The PROGBITS type is the result of the
compiler emitting .note.GNU-stack as PROGBITS rather than NOTE.

While Ard provided a fix for arm64, I want to fix this globally because
the same issue is happening on riscv since commit 2348e6bf ("riscv:
remove special treatment for the link order of head.o"). This problem
will happen in general for other architectures if they start to drop
unneeded entries from scripts/head-object-list.txt.

Discard .note.GNU-stack in include/asm-generic/vmlinux.lds.h.

Link: https://lore.kernel.org/lkml/CAABkxwuQoz1CTbyb57n0ZX65eSYiTonFCU8-LCQc=74D=xE=rA@mail.gmail.com/
Fixes: 994b7ac1 ("arm64: remove special treatment for the link order of head.o")
Fixes: 2348e6bf

 ("riscv: remove special treatment for the link order of head.o")
Reported-by: Dennis Gilmore <dennis@ausil.us>
Suggested-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Acked-by: Palmer Dabbelt <palmer@rivosinc.com>