linux.git/arch/mips, branch master

Merge tag 'staging-7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

2026-06-22T19:43:16+00:00

Pull staging driver updates from Greg KH:
 "Here is the big set of staging driver updates for 7.2-rc1.

  Nothing major in here, just constant grind of tiny cleanups and coding
  style fixes and wrapper removals. Overall more code was removed than
  added, always a nice sign that things are progressing forward.

  Changes outside of drivers/staging/ was due to the octeon driver
  changes, which for some reason also lives partially in the mips
  subsystem, someday that all will be untangled and cleaned up, or just
  removed entirely, it's hard to tell which is going to be its fate.

  Other than octeon driver cleanups, in here are the usual:

   - rtl8723bs driver reworking and cleanups, being the bulk of this
     merge window given all of the issues and wrappers involved in that
     beast of a driver

   - most driver cleanups

   - sm750fb driver cleanups (which might be done, as this really should
     be moved to the drm layer one of these days...)

   - other tiny staging driver cleanups and fixes

  All of these have been in linux-next for many weeks with no reported
  issues"

* tag 'staging-7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (199 commits)
  staging: most: video: avoid double free on video register failure
  staging: sm750: rename CamelCase variable Bpp to bpp
  staging: rtl8723bs: delete superfluous switch statement
  staging: sm750fb: Mark g_noaccel, g_nomtrr and g_dualview as __ro_after_init
  staging: rtl8723bs: propagate errno through hal xmit path
  staging: rtl8723bs: propagate errno through xmit enqueue path
  staging: rtl8723bs: convert rtw_xmit_classifier to return errno
  staging: rtl8723bs: make rtw_xmit_classifier static
  staging: rtl8723bs: simplify rtw_xmit_classifier control flow
  staging: rtl8723bs: make _rtw_enqueue_cmd return 0 on success
  staging: rtl8723bs: simplify rtw_enqueue_cmd control flow
  staging: rtl8723bs: make _rtw_enqueue_cmd static
  staging: rtl8723bs: simplify _rtw_enqueue_cmd control flow
  staging: rtl8723bs: fix multiple blank lines in more hal/ files
  staging: rtl8723bs: remove unused TXDESC_64_BYTES code
  staging: rtl8723bs: remove unused DBG_XMIT_BUF and DBG_XMIT_BUF_EXT code
  staging: rtl8723bs: fix multiple blank lines in hal/Hal* files
  staging: rtl8723bs: fix multiple blank lines in hal/ files
  staging: rtl8723bs: rtw_mlme: add blank line for readability
  staging: rtl8723bs: rtw_mlme: wrap rtw_sitesurvey_cmd condition
  ...

Merge tag 'mm-nonmm-stable-2026-06-21-10-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2026-06-21T20:20:19+00:00

Pull non-MM updates from Andrew Morton:

 - "taskstats: fix TGID dead-thread stat retention" (Yiyang Chen)

   Fix a taskstats TGID aggregation bug where fields added in the TGID
   query path were not preserved after thread exit, and adds a kselftest
   covering the regression.

 - "lib/tests: string_helpers: Slight improvements" (Andy Shevchenko)

   Improve lib/tests/string_helpers_kunit.c a little

 - "lib/base64: decode fixes" (Josh Law)

   Address minor issues in lib/base64.c

 - "selftests/filelock: Make output more kselftestish" (Mark Brown)

   Make the output from the ofdlocks test a bit easier for tooling to
   work with. Also ignore the generated file

 - "uaccess: unify inline vs outline copy_{from,to}_user() selection"
   (Yury Norov)

   Simplify the usercopy code by removing the selectability of inlining
   copy_{from,to}_user().

 - "ocfs2: validate inline xattr header consumers" (ZhengYuan Huang)

   Fix a number of possible issues in the ocfs2 xattr code

 - "lib and lib/cmdline enhancements" (Dmitry Antipov)

   Provide additional robustness checking in the cmdline handling code
   and its in-kernel testing and selftests

 - "cleanup the RAID6 P/Q library" (Christoph Hellwig)

   Clean up the RAID6 P/Q library to match the recent updates to the
   RAID 5 XOR library and other CRC/crypto libraries

 - "ocfs2: harden inode validators against forged metadata" (Michael
   Bommarito)

   Add three structural checks to OCFS2 dinode validation so malformed
   on-disk fields are rejected before ocfs2_populate_inode() copies them
   into the in-core inode

 - "lib/raid: replace __get_free_pages() call with kmalloc()" (Mike
   Rapoport)

   Clean up the lib/raid code by using kmalloc() in more places

* tag 'mm-nonmm-stable-2026-06-21-10-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (108 commits)
  ocfs2: fix circular locking dependency in ocfs2_dio_end_io_write
  ocfs2: fix NULL h_transaction deref in ocfs2_assure_trans_credits
  lib: interval_tree_test: validate benchmark parameters
  ocfs2: avoid moving extents to occupied clusters
  treewide: fix transposed "sign" typos and update spelling.txt
  ocfs2: fix UBSAN array-index-out-of-bounds in ocfs2_sum_rightmost_rec
  fat: reject BPB volumes whose data area starts beyond total sectors
  selftests/uevent: increase __UEVENT_BUFFER_SIZE to avoid ENOBUFS on busy systems
  lib/test_firmware: allocate the configured into_buf size
  fs: efs: remove unneeded debug prints
  checkpatch: cuppress warnings when Reported-by: is followed by Link:
  MAINTAINERS: add Alexander as a kcov reviewer
  mailmap: update Alexander Sverdlin's Email addresses
  fs: fat: inode: replace sprintf() with scnprintf()
  ocfs2: fix out-of-bounds write in ocfs2_remove_refcount_extent
  ocfs2: fix race between ocfs2_control_install_private() and ocfs2_control_release()
  ocfs2/dlm: require a ref for locking_state debugfs open
  ocfs2: reject FITRIM ranges shorter than a cluster
  ocfs2: validate fast symlink target during inode read
  ocfs2: add journal NULL check in ocfs2_checkpoint_inode()
  ...

Merge tag 'mips_7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux

2026-06-19T14:46:16+00:00

Pull MIPS updates from Thomas Bogendoerfer:

 - use software nodes for GPIO code

 - cleanups and fixes

* tag 'mips_7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (41 commits)
  mips: select legacy gpiolib interfaces where used
  MIPS: lib: Remove '.hidden' for local symbols
  MIPS: VDSO: Avoid including .got in dynamic segment
  MIPS: smp: report dying CPU to RCU in stop_this_cpu()
  MIPS: kernel: proc: Delete unnecessary braces in show_cpuinfo()
  MIPS: kernel: proc: Use seq_putc() calls in show_cpuinfo()
  mips: sched: Fix CPUMASK_OFFSTACK memory corruption
  MIPS: mm: Fix out-of-bounds write in maar_res_walk()
  MIPS: ath79: reduce ARCH_DMA_MINALIGN
  mips: dts: ar9132: fix wdt node name
  mips: Remove remaining defconfig references to the pktcdvd driver
  MIPS: mm: remove comment referring to removed CONFIG_MIPS_CMP
  MIPS: alchemy: db1300: switch to static device properties
  MIPS: alchemy: gpr: switch to static device properties
  MIPS: alchemy: db1000: use nodes attached to GPIO chips in properties
  MIPS: alchemy: mtx1: attach software nodes to GPIO chips
  MIPS: alchemy: provide visible function prototypes to board files
  MIPS: alchemy: platform: add missing include
  MIPS: ip22-gio: do not export device release function
  MIPS: ip22-gio: switch to dynamic root device
  ...

Merge tag 'bitmap-for-7.2' of https://github.com/norov/linux

2026-06-17T10:38:38+00:00

Pull bitmap updates from Yury Norov:
 "This includes the new FIELD_GET_SIGNED() helper,
  bitmap_print_to_pagebuf() removal, RISCV/bitrev support, and a couple
  cleanups.

   - new handy helper FIELD_GET_SIGNED() (Yury)

   - arch test_and_set_bit_lock() and clear_bit_unlock() cleanup (Randy)

   - __bf_shf() simplification (Yury)

   - bitmap_print_to_pagebuf() removal (Yury)

   - RISCV/bitrev conditional support (Jindie, Yury)"

* tag 'bitmap-for-7.2' of https://github.com/norov/linux:
  MAINTAINERS: BITOPS: include bitrev.[ch]
  arch/riscv: Add bitrev.h file to support rev8 and brev8
  bitops: Define generic___bitrev8/16/32 for reuse
  lib/bitrev: Introduce GENERIC_BITREVERSE
  arch: select HAVE_ARCH_BITREVERSE conditionally on BITREVERSE
  bitmap: fix find helper documentation
  bitmap: drop bitmap_print_to_pagebuf()
  cpumask: switch cpumap_print_to_pagebuf() to using scnprintf()
  bitfield: wire __bf_shf to __builtin_ctzll
  bitops: use common function parameter names
  ptp: switch to using FIELD_GET_SIGNED()
  rtc: rv3032: switch to using FIELD_GET_SIGNED()
  wifi: rtw89: switch to using FIELD_GET_SIGNED()
  iio: mcp9600: switch to using FIELD_GET_SIGNED()
  iio: pressure: bmp280: switch to using FIELD_GET_SIGNED()
  iio: magnetometer: yas530: switch to using FIELD_GET_SIGNED()
  iio: intel_dc_ti_adc: switch to using FIELD_GET_SIGNED()
  x86/extable: switch to using FIELD_GET_SIGNED()
  bitfield: add FIELD_GET_SIGNED()

Merge tag 'net-next-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

2026-06-17T07:17:00+00:00

Pull networking updates from Jakub Kicinski:
"Core & protocols:

- Work on removing rtnl_lock protection throughout the stack
continues. In this chapter:
- don't use rtnl_lock for IPv6 multicast routing configuration
- don't take rtnl_lock in ethtool for modern drivers
- prepare Qdisc dump callbacks for rtnl_lock removal

- Support dumping just ifindex + name of all interfaces, under RCU.
It's a common operation for Netlink CLI tools (when translating
names to ifindexes) and previously required full rtnl_lock.

- Support dumping qdiscs and page pools for a specific netdev. Even
tho user space wants a dump of all netdevs, most of the time, the
OOO programming model results in repeating the dump for each
netdev. Which, in absence of a cache, leads to a O(n^2) behavior.

- Flush nexthops once on multi-nexthop removal (e.g. when device goes
down), another O(n^2) -> O(n) improvement.

- Rehash locally generated traffic to a different nexthop on
retransmit timeout.

- Honor oif when choosing nexthop for locally generated IPv6 traffic.

- Convert TCP Auth Option to crypto library, and drop non-RFC algos.

- Increase subflow limits in MPTCP to 64 and endpoint limit to 256.

- Support MPTCP signaling of IPv6 address + port (ADD_ADDR). We need
to selectively skip reporting of the standard TCP Timestamp option,
because they won't fit into the header space together (12 + 30 >
40).

- Support using bridge neighbor suppression, Duplicate Address
Detection, Gratuitous ARP and unsolicited NA forwarding - in EVPN
deployments, e.g. VXLAN fabrics (IPv4 and IPv6).

- Improve link state reporting for upper netdevs (e.g. macvlan) over
tunnel devices (again, mostly for EVPN deployments).

- Support binding GENEVE tunnels to a local address.

- Speed up UDP tunnel destruction (remove one synchronize_rcu()).

- Support exponential field encoding in multicast (IGMPv3 and MLDv2).

- Support attaching PSP crypto offload to containers (veth, netkit).

- Add a new IPSec Netlink message XFRM_MSG_MIGRATE_STATE that allows
migrating individual IPsec SAs independently of their policies.

The existing XFRM_MSG_MIGRATE is tightly coupled to policy+SA
migration, lacks SPI for unique SA identification, and cannot
express reqid changes or migrate Transport mode selectors.

The new interface identifies the SA via SPI and mark, supports
reqid changes, address family changes, encap removal, and uses an
atomic create+install flow under x->lock to prevent SN/IV reuse
during AEAD SA migration.

- Implement GRO/GSO support for PPPoE.

- Convert sockopt callbacks in a number of protocols to iov_iter.

Cross-tree stuff:

- Remove support for Crypto TFM cloning (unblocked after the TCP Auth
Option rework). This feature regressed performance for all crypto
API users, since it changed crypto transformation objects into
reference-counted objects.

- Add FCrypt-PCBC implementation to rxrpc and remove it from the
global crypto API as obsolete and insecure.

Wireless:

- Major rework of station bandwidth handling, fixing issues with
lower capability than AP.

- Cleanups for EMLSR spec issues (drafts differed).

- More Neighbor Awareness Networking (Wi-Fi Aware) work (multicast,
schedule improvements, multi-station etc.)

- Some Ultra High Reliability (UHR) / IEEE 802.11bn (D1.4) work
(e.g. non-primary channel access, UHR DBE support).

- Fine Timing Measurement ranging (i.e. distance measurement) APIs.

Netfilter:

- Use per-rule hash initval in nf_conncount. This avoids unnecessary
lock contention with short keys (e.g. conntrack zones) in different
namespaces.

- Various safety improvements, both in packet parsing and object
lifetimes. Notably add refcounts to conntrack timeout policy.

Deletions:

- Remove TLS + sockmap integration. TLS wants to pin user pages to
avoid a copy, and sockmap wants to write to the input stream. More
work on this integration is clearly needed, and we can't find any
users (original author admitted that they never deployed it).

- Remove support for TLS offload with TCP Offload Engine (the far
more common opportunistic offload is retained). The locking looks
unfixable (driver sleeps under TCP spin locks) and people from the
vendor that added this are AWOL.

- Remove more ATM code, trying to leave behind only what PPPoATM
needs, AAL5 and br2684 with permanent circuits.

- Remove AppleTalk. Let it join hamradio in our out of tree protocol
graveyard, I mean, repository.

- Disable 32-bit x_tables compatibility (32bit binaries on 64bit
kernel) interface in user namespaces. To be deleted completely,
soon.

- Remove 5/10 MHz support from cfg80211/mac80211.

Drivers:

- Software:
- Support DEVMEM/DMABUF Tx over NETMEM_TX_NO_DMA devices (netkit)
- bonding: add knob to strictly follow 802.3ad for link state

- New drivers:
- Alibaba Elastic Ethernet Adaptor (cloud vNIC).
- NXP NETC switch within i.MX94.

- DPLL:
- Add operational state to pins (implement in zl3073x).
- Add generic DPLL type, for daisy-chaining DPLLs (implement in ice).

- Ethernet high-speed NICs:
- Huawei (hinic3):
- enhance tc flow offload support with queue selection,
tunnels
- nVidia/Mellanox:
- avoid over-copying payload to the skb's linear part (up to
60% win for LRO on slow CPUs like ARM64 V2)
- expose more per-queue stats over the standard API
- support additional, unprivileged PFs in the DPU
configuration
- support Socket Direct (multi-PF) with switchdev offloads
- add a pool / frag allocator for DMA mapped buffers for
control objects, save memory on systems with 64kB page size
- take advantage of the ability to dynamically change RSS
table size, even when table is configured by the user
- increase the max RSS table size for even traffic
distribution

- Ethernet NICs:
- Marvell/Aquantia:
- AQC113 PTP support
- Realtek USB (r8152):
- support 10Gbit Link Speeds and Energy-Efficient Ethernet
(EEE)
- support firmware loaded (for RTL8157/RTL8159)
- support for the RTL8159
- Intel (ixgbe):
- support Energy-Efficient Ethernet (EEE) on E610 devices

- Ethernet switches:
- Airoha:
- support multiple netdevs on a single GDM block / port
- Marvell (mv88e6xxx):
- support SERDES of mv88e6321
- Microchip (ksz8/9):
- rework the driver callbacks to remove one indirection layer
- Motorcomm (yt921x):
- support port rate policing
- support TBF qdisc offload
- support ACL/flower offload
- nVidia/Mellanox:
- expose per-PG rx_discards
- Realtek:
- rtl8365mb: bridge offloading and VLAN support

- Ethernet PHYs:
- Airoha:
- support Airoha AN8801R Gigabit PHYs.
- Micrel:
- implement 3 low-loss cable tunables
- Realtek:
- support MDI swapping for RTL8226-CG
- support MDIO for RTL931x
- Qualcomm:
- at803x: Rx and Tx clock management for IPQ5018 PHY
- Motorcomm:
- support YT8522 100M RMII PHY
- set drive strength in YT8531s RGMII
- TI:
- dp83822: add optional external PHY clock

- Bluetooth:
- hci_sync: add support for HCI_LE_Set_Host_Feature [v2]
- SMP: use AES-CMAC library API
- Intel:
- support Product level reset
- support smart trigger dump
- Mediatek:
- add event filter to filter specific event
- Realtek:
- fix RTL8761B/BU broken LE extended scan

- WiFi:
- Broadcom (b43):
- new support for a 11n device
- MediaTek (mt76):
- support mt7927
- mt792x: broken usb transport detection
- mt7921: regulatory improvements
- Qualcomm (ath9k):
- GPIO interface improvements
- Qualcomm (ath12k):
- WDS support
- replace dynamic memory allocation in WMI Rx path
- thermal throttling/cooling device support
- 6 GHz incumbent interference detection
- channel 177 in 5 GHz
- Realtek (rt89):
- RTL8922AU support
- USB 3 mode switch for performance
- better monitor radiotap support
- RTL8922DE preparations"

* tag 'net-next-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1778 commits)
ipv4: fib_rule: Move fib4_rules_exit() to ->exit().
net: serialize netif_running() check in enqueue_to_backlog()
net: skmsg: preserve sg.copy across SG transforms
appletalk: move the protocol out of tree
appletalk: stop storing per-interface state in struct net_device
selftests/bpf: test that TLS crypto is rejected on a sockmap socket
selftests/bpf: drop the unused kTLS program from test_sockmap
selftests/bpf: remove sockmap + ktls tests
tls: remove dead sockmap (psock) handling from the SW path
tls: reject the combination of TLS and sockmap
atm: remove orphaned uAPI for deleted drivers, protocols and SVCs
atm: remove unused ATM PHY operations
atm: remove the unused pre_send and send_bh device operations
atm: remove the unused change_qos device operation
atm: remove SVC socket support and the signaling daemon interface
atm: remove the local ATM (NSAP) address registry
atm: remove dead SONET PHY ioctls
atm: remove the unused send_oam / push_oam callbacks
atm: remove AAL3/4 transport support
net: dsa: sja1105: fix lastused timestamp in flower stats
...

appletalk: move the protocol out of tree

2026-06-16T21:37:06+00:00

AppleTalk has been removed in MacOS X 10.6 (Snow Leopard), in 2009,
according to Wikipedia. We recently got a burst of AI generated
fixes to this protocol which nobody is reviewing.

Let AppleTalk follow AX.25 and hamradio out of the Linux tree.
We we will maintain the code at: github.com/linux-netdev/mod-orphan
for anyone interested in playing with it.

Retain the uAPI for now. No strong reason, simply because I suspect
keeping it will be less controversial.

Acked-by: Stephen Hemminger 
Link: https://patch.msgid.link/20260615222935.947233-3-kuba@kernel.org
Signed-off-by: Jakub Kicinski

Merge tag 'v7.2-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

2026-06-16T03:31:23+00:00

Pull crypto updates from Herbert Xu:
 "API:
   - Drop support for off-CPU cryptography in af_alg
   - Document that af_alg is *always* slower
   - Document the deprecation of af_alg
   - Remove zero-copy support from skcipher and aead in af_alg
   - Cap AEAD AD length to 0x80000000 in af_alg
   - Free default RNG on module exit

  Algorithms:
   - Fix vli multiplication carry overflow in ecc
   - Drop unused cipher_null crypto_alg
   - Remove unused variants of drbg
   - Use lib/crypto in drbg
   - Use memcpy_from/to_sglist in authencesn
   - Allow authenc(hmac(sha{256,384}),cts(cbc(aes))) in FIPS mode
   - Disallow RSA PKCS#1 SHA-1 sig algs in FIPS mode
   - Filter out async aead implementations at alloc in krb5
   - Fix non-parallel fallback by rstoring callback in pcrypt
   - Validate poly1305 template argument in chacha20poly1305

  Drivers:
   - Add sysfs PCI reset support to qat
   - Add KPT support for GEN6 devices to qat
   - Remove unused character device and ioctls from qat
   - Add support for hw access via SMCC to mtk
   - Remove prng support from crypto4xx
   - Remove prng support from hisi-trng
   - Remove prng support from sun4i-ss
   - Remove prng support from xilinx-trng
   - Remove loongson-rng
   - Remove exynos-rng

  Others:
   - Remove support for AIO on sockets"

* tag 'v7.2-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (196 commits)
  crypto: tegra - fix refcount leak in tegra_se_host1x_submit()
  crypto: rng - Free default RNG on module exit
  crypto: testmgr - allow authenc(hmac(sha{256,384}),cts(cbc(aes))) in FIPS mode
  hwrng: jh7110 - fix refcount leak in starfive_trng_read()
  crypto: atmel-ecc - drop dead code in atmel_ecdh_max_size
  crypto: cavium/cpt - fix DMA cleanup using wrong loop index
  crypto: marvell/octeontx - fix DMA cleanup using wrong loop index
  MAINTAINERS: make myself the maintainer of the Qualcomm QCE driver
  crypto: amcc - convert irq_of_parse_and_map to platform_get_irq
  crypto: sun4i-ss - Remove insecure and unused rng_alg
  hwrng: xilinx - Move xilinx-rng into drivers/char/hw_random/
  crypto: xilinx-trng - Replace crypto_drbg_ctr_df() with HMAC-SHA512
  crypto: xilinx-trng - Fix return value of xtrng_hwrng_trng_read()
  crypto: xilinx-trng - Remove crypto_rng interface
  crypto: exynos-rng - Remove exynos-rng driver
  hwrng: hisi-trng - Move hisi-trng into drivers/char/hw_random/
  crypto: hisi-trng - Remove crypto_rng interface
  crypto: loongson - Remove broken and unused loongson-rng
  crypto: crypto4xx - Remove insecure and unused rng_alg
  crypto: qat - validate RSA CRT component lengths
  ...

mips: select legacy gpiolib interfaces where used

2026-06-15T10:32:43+00:00

A few old machines have not been converted away from the old-style
gpiolib interfaces. Make these select the new CONFIG_GPIOLIB_LEGACY
symbol so the code still works where it is needed but can be left
out otherwise.

This is the list of all gpio_request() calls in mips:

  arch/mips/alchemy/devboards/db1000.c:           gpio_request(19, "sd0_cd");
  arch/mips/alchemy/devboards/db1000.c:           gpio_request(20, "sd1_cd");
  arch/mips/alchemy/devboards/db1200.c:   gpio_request(215, "otg-vbus");
  arch/mips/bcm47xx/workarounds.c:        err = gpio_request_one(usb_power, GPIOF_OUT_INIT_HIGH, "usb_power");
  arch/mips/bcm63xx/boards/board_bcm963xx.c:              gpio_request_one(board.ephy_reset_gpio,
  arch/mips/txx9/rbtx4927/setup.c:        gpio_request(15, "sio-dtr");

Most of these should be easy enough to change to modern gpio descriptors
or remove if they are no longer in use.

Signed-off-by: Arnd Bergmann 
Reviewed-by: Bartosz Golaszewski 
Reviewed-by: Linus Walleij 
Signed-off-by: Thomas Bogendoerfer

MIPS: lib: Remove '.hidden' for local symbols

2026-06-15T10:21:31+00:00

After a recent change in binutils that warns when local symbols have
non-default visibility [1], there are a couple instances when building
arch/mips:

  Assembler messages:
  {standard input}: Warning: local symbol `__memset' has non-default visibility
  Assembler messages:
  {standard input}: Warning: local symbol `__memcpy' has non-default visibility

Remove the '.hidden' directives for these symbols to clear up the
warnings, as they are pointless with a local symbol, which is by
definition hidden. This results in no changes to these symbols in nm's
output when assembled with various copies of binutils.

Closes: https://lore.kernel.org/20260509122517.GA1108596@ax162/
Link: https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=c4150acbda1b3ce0602f79cbb7700b39e577be7e [1]
Signed-off-by: Nathan Chancellor 
Signed-off-by: Thomas Bogendoerfer

MIPS: VDSO: Avoid including .got in dynamic segment

2026-06-15T10:21:16+00:00

After commit 2db1ec80dfd5 ("MIPS: VDSO: Fold MIPS_DISABLE_VDSO into
MIPS_GENERIC_GETTIMEOFDAY"), building ARCH=mips allnoconfig with LLVM=1
shows some warnings from llvm-readelf while checking the VDSO for
dynamic relocations:

  llvm-readelf: warning: 'arch/mips/vdso/vdso.so.dbg.raw': invalid PT_DYNAMIC size (0xa4)
  llvm-readelf: warning: 'arch/mips/vdso/vdso.so.dbg.raw': PT_DYNAMIC dynamic table is invalid: SHT_DYNAMIC will be used

The blamed commit alters the link order of objects into vdso.so.raw,
placing vgettimeofday.o after sigreturn.o. This ultimately results in
the .text section shrinking slightly in size, which in turn changes the
offset of the .dynamic section.

  -  [ 9] .text             PROGBITS        000002f0 0002f0 000930 00  AX  0   0 16
  -  [10] .dynamic          DYNAMIC         00000c20 000c20 000090 08   A  5   0  4
  +  [ 9] .text             PROGBITS        000002f0 0002f0 000924 00  AX  0   0 16
  +  [10] .dynamic          DYNAMIC         00000c14 000c14 000090 08   A  5   0  4

Changing the offset of the .dynamic section causes the dynamic segment
size to grow by the same amount, which triggers a warning in
llvm-readelf because PT_DYNAMIC's p_filesz (0xa4) is no longer a
multiple of its sh_entsize (8):

  -  DYNAMIC        0x000c20 0x00000c20 0x00000c20 0x00098 0x00098 R   0x10
  +  DYNAMIC        0x000c14 0x00000c14 0x00000c14 0x000a4 0x000a4 R   0x10

The size of the dynamic segment was already incorrect before the blamed
comment, as it should be 0x90 like the .dynamic section above (18
entries at 8 bytes per entry); it just so happens that 0x98 % 8 is 0,
whereas 0xa4 % 8 is 4, so there was no warning.

Looking at the section to segment mapping of the dynamic segment reveals
that it includes the .got section, as it is implicitly placed after
.dynamic by ld.lld's orphan section heuristics and inherits its segments
from the linker script.

  [ 9] .text             PROGBITS        000002f0 0002f0 000924 00  AX  0   0 16
  [10] .dynamic          DYNAMIC         00000c14 000c14 000090 08   A  5   0  4
  [11] .got              PROGBITS        00000cb0 000cb0 000008 00 WAp  0   0 16

  Section to Segment mapping:
   Segment Sections...
    00     .mips_abiflags
    01     .reginfo
    02     .mips_abiflags .reginfo .hash .dynsym .dynstr .gnu.version .gnu.version_d .note .text .dynamic .got
    03     .dynamic .got
    04     .note

Explicitly describe the .got section in the MIPS VDSO linker script
after .rodata, which switches back to the default text segment,
resulting in a dynamic segment that is the exact size of the .dynamic
section as expected with no other layout changes.

  -  DYNAMIC        0x000c14 0x00000c14 0x00000c14 0x000a4 0x000a4 R   0x10
  +  DYNAMIC        0x000c14 0x00000c14 0x00000c14 0x00090 0x00090 R   0x4

  -   03     .dynamic .got
  +   03     .dynamic

Closes: https://github.com/ClangBuiltLinux/linux/issues/2166
Fixes: 2db1ec80dfd5 ("MIPS: VDSO: Fold MIPS_DISABLE_VDSO into MIPS_GENERIC_GETTIMEOFDAY")
Signed-off-by: Nathan Chancellor 
Reviewed-by: Thomas Weißschuh 
Acked-by: Nick Desaulniers 
Signed-off-by: Thomas Bogendoerfer