linux-stable.git/tools, branch v6.12.96

selftests/mm: pagemap_ioctl: use the correct page size for transact_test()

2026-07-18T14:52:14+00:00

commit dccf636bf1e68c3fda92f0c9e1018ab7e0ac8b2c upstream.

There are several places in transact_test() where we use the hardcoded
0x1000 (4k) as page size, which is not always correct for architectures
supporting multiple page sizes.

Switch to use the correct page size.  Otherwise ./ksft_pagemap.sh on a
16k-page-size arm64 box fails with

 $ ./ksft_pagemap.sh
 [...]
 # ok 96 mprotect_tests Both pages written after remap and mprotect
 # ok 97 mprotect_tests Clear and make the pages written
 # Bail out! ioctl failed
 # # Planned tests != run tests (117 != 97)
 # # Totals: pass:97 fail:0 xfail:0 xpass:0 skip:0 error:0
 # [FAIL]
 not ok 1 pagemap_ioctl # exit=1
 # SUMMARY: PASS=0 SKIP=0 FAIL=1
 1..1

Link: https://lore.kernel.org/20260628101118.35861-1-zenghui.yu@linux.dev
Fixes: 46fd75d4a3c9 ("selftests: mm: add pagemap ioctl tests")
Signed-off-by: Zenghui Yu 
Cc: Muhammad Usama Anjum 
Cc: David Hildenbrand 
Cc: Liam R. Howlett 
Cc: Lorenzo Stoakes 
Cc: Michal Hocko 
Cc: Mike Rapoport 
Cc: Shuah Khan 
Cc: Suren Baghdasaryan 
Cc: Vlastimil Babka 
Cc: Zenghui Yu 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Greg Kroah-Hartman

selftests: mm: fix and speedup "droppable" test

2026-07-18T14:52:14+00:00

commit cc13a7a618fe8354f16d74c06aaf9565a68e9ebd upstream.

The droppable test currently relies on creating memory pressure in a child
process to trigger dropping the droppable pages.

That not only takes a long time on some machines (allocating and filling
all that memory), on large machines this will not work as we hardcode the
area size to 134217728 bytes.

...  further, we rely on timeouts to detect that memory was not dropped,
which is really suboptimal.

Instead, let's just use MADV_PAGEOUT on a 2 MiB region.  MADV_PAGEOUT
works with droppable memory even without swap.

There is the low chance of MADV_PAGEOUT failing to drop a page because of
speculative references.  We'll wait 1s and retry 10 times to rule that
unlikely case out as best as we can.

On a machine without swap:

	$ ./droppable
	TAP version 13
	1..1
	ok 1 madvise(MADV_PAGEOUT) behavior
	# Totals: pass:1 fail:0 xfail:0 xpass:0 skip:0 error:0

Link: https://lore.kernel.org/20260611-droppable_test-v1-1-b6a73d99f658@kernel.org
Fixes: 9651fcedf7b9 ("mm: add MAP_DROPPABLE for designating always lazily freeable mappings")
Signed-off-by: David Hildenbrand (Arm) 
Reported-by: Aishwarya TCV 
Tested-by: Sarthak Sharma 
Tested-by: Lance Yang 
Reviewed-by: Dev Jain 
Reviewed-by: SeongJae Park 
Tested-by: Lorenzo Stoakes 
Reviewed-by: Lorenzo Stoakes 
Reviewed-by: Jason A. Donenfeld 
Cc: Anthony Yznaga 
Cc: Liam R. Howlett 
Cc: Mark Brown 
Cc: Michal Hocko 
Cc: Mike Rapoport 
Cc: Shuah Khan 
Cc: Suren Baghdasaryan 
Cc: Vlastimil Babka 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Greg Kroah-Hartman

usbip: tools: support SuperSpeedPlus devices

2026-07-18T14:52:10+00:00

commit 195e667c8719480c320cd48ac0fbf1cb81d6ffe0 upstream.

USB devices running at SuperSpeedPlus report "10000" or "20000" in
their sysfs speed attribute. usbip currently maps only "5000" to
USB_SPEED_SUPER, so a SuperSpeedPlus device is imported as
USB_SPEED_UNKNOWN.

The attach request is then rejected by vhci_hcd:

  vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN

Map the SuperSpeedPlus sysfs speed values to USB_SPEED_SUPER_PLUS, use
the SuperSpeed VHCI hub for SuperSpeedPlus devices, and recognize the
gadget current_speed string used by the kernel.

Fixes: b2316645ca5e ("usb: show speed "10000" in sysfs for USB 3.1 SuperSpeedPlus devices")
Cc: stable 
Signed-off-by: Yichong Chen 
Reviewed-by: Shuah Khan 
Link: https://patch.msgid.link/00C828F338E43447+20260617020613.199086-1-chenyichong@uniontech.com
Signed-off-by: Greg Kroah-Hartman

tools/mm/slabinfo: fix total_objects attribute name

2026-07-18T14:52:07+00:00

commit 892a7864730775c3dbee2a39e9ead4fa8d4256e7 upstream.

SLUB exports the total_objects sysfs attribute, but slabinfo tries to read
objects_total. As a result, the lookup fails and the field remains zero.

Use the correct attribute name and rename the corresponding structure
member to match.

Fixes: 205ab99dd103 ("slub: Update statistics handling for variable order slabs")
Signed-off-by: Yichong Chen 
Cc: 
Reviewed-by: SeongJae Park 
Link: https://patch.msgid.link/96556748872BB47E+20260612071359.649946-1-chenyichong@uniontech.com
Signed-off-by: Vlastimil Babka (SUSE) 
Signed-off-by: Greg Kroah-Hartman

tools/mm/slabinfo: Fix trace disable logic inversion

2026-07-18T14:52:07+00:00

commit 235ab68d67eadbef1fdbfb771f21f5bacc77a2ae upstream.

The disable trace path in slab_debug() had a logic error where it would
set trace=1 instead of trace=0. This made trace functionality permanently
enabled once turned on for any slab cache.

Fixes: a87615b8f9e2 ("SLUB: slabinfo upgrade")
Cc: stable@vger.kernel.org
Reviewed-by: SeongJae Park 
Signed-off-by: Xuewen Wang 
WARNING: From:/Signed-off-by: email address mismatch: 'From: wangxuewen <18810879172@163.com>' != 'Signed-off-by: wangxuewen '
Link: https://patch.msgid.link/20260518062159.80664-2-wangxuewen@kylinos.cn
Signed-off-by: Vlastimil Babka (SUSE) 
Signed-off-by: Greg Kroah-Hartman

perf trace beauty fcntl: Fix build with older kernel headers

2026-07-18T14:51:55+00:00

commit 7ee7f48413c42b90230de4a8e40898b757bc8e82 upstream.

Toolchains with older kernel headers that do not include upstream commit
c75b1d9421f80f41 ("fs: add fcntl() interface for setting/getting write
life time hints") will now fail to build perf due to missing definitions
for F_GET_RW_HINT/F_SET_RW_HINT/F_GET_FILE_RW_HINT/F_SET_FILE_RW_HINT.

Provide a fallback definition for these when they are not already
defined.

Fixes: 9c47f66748381ecb ("perf trace beauty fcntl: Basic 'arg' beautifier")
Reviewed-by: Ian Rogers 
Signed-off-by: Florian Fainelli 
Cc: Adrian Hunter 
Cc: Alexander Shishkin 
Cc: Ingo Molnar 
Cc: James Clark 
Cc: Jiri Olsa 
Cc: Mark Rutland 
Cc: Markus Mayer 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Signed-off-by: Arnaldo Carvalho de Melo 
Signed-off-by: Greg Kroah-Hartman

selftests/bpf: Add test to ensure kprobe_multi is not sleepable

2026-07-04T11:43:25+00:00

commit c7cab53f9d5273f0cf2a26bdf178c4e074bdfb50 upstream.

Add a selftest to ensure that kprobe_multi programs cannot be attached
using the BPF_F_SLEEPABLE flag. This test succeeds when the kernel
rejects attachment of kprobe_multi when the BPF_F_SLEEPABLE flag is set.

Suggested-by: Leon Hwang 
Signed-off-by: Varun R Mallya 
Link: https://lore.kernel.org/r/20260408190137.101418-3-varunrmallya@gmail.com
Signed-off-by: Alexei Starovoitov 
Signed-off-by: Shung-Hsi Yu 
Signed-off-by: Sasha Levin

Reapply "selftest/ptp: update ptp selftest to exercise the gettimex options"

2026-07-04T11:43:24+00:00

This reverts commit 6b2176a5c99b33f3c4acc04faadaa9c75da7b163, which in turn
reverts commit fa361565a7275cc43c6ca1abec9ec4fcc9ec51f1, which is commit
3d07b691ee707c00afaf365440975e81bb96cd9b upstream.

The reason for the original revert was that struct ptp_sys_offset_extended
does not contain the field clock_id in 6.12.y. However the claim was false:
6.12.y does in fact contain the field. Reapply therefore the original
patch.

Signed-off-by: Petr Machata 
Signed-off-by: Greg Kroah-Hartman

Revert "selftest/ptp: update ptp selftest to exercise the gettimex options"

2026-06-19T11:42:39+00:00

This reverts commit fa361565a7275cc43c6ca1abec9ec4fcc9ec51f1, which is
commit 3d07b691ee707c00afaf365440975e81bb96cd9b upstream.

The cited commit allows testptp to set a configurable clock_id. That is
done via a PTP_SYS_OFFSET_EXTENDED ioctl call, whose argument is struct
ptp_sys_offset_extended, where the clock_id is set. However, this Linux
version does not support the ptp_sys_offset_extended.clockid field, and
the test case cannot be built against this tree's own UAPI headers.

The reverted commit was introduced to resolve a missing dependency of
commit c6dc458227a3 ("testptp: Add option to open PHC in readonly mode"),
which is 76868642e427 upstream. My suspicion is that the only conflict
between the two is the getopt string, and there is otherwise no direct
dependency between the two.

This patch therefore reverts the cited commit, with hand-resolving the
getopt string to include 'r' (as introduced by c6dc458227a3), but not
'y' (introduced by 06954f715deb).

Reported-by: Yong Wang 
Signed-off-by: Petr Machata 
Signed-off-by: Greg Kroah-Hartman

selftests: mptcp: add test for extra_subflows underflow on userspace PM

2026-06-19T11:42:30+00:00

commit 06fd2bec7aebf393288e4b78924482fe170caabc upstream.

Add a test to verify that when userspace PM fails to create a subflow
(e.g. using an unreachable address), the extra_subflows counter is not
decremented below zero.

Fixes: 77e4b94a3de6 ("mptcp: update userspace pm infos")
Cc: stable@vger.kernel.org
Signed-off-by: Tao Cui 
Reviewed-by: Matthieu Baerts (NGI0) 
Signed-off-by: Matthieu Baerts (NGI0) 
Link: https://patch.msgid.link/20260602-net-mptcp-misc-fixes-7-1-rc7-v2-6-856831229976@kernel.org
Signed-off-by: Jakub Kicinski 
Signed-off-by: Greg Kroah-Hartman