This is a note to let you know that I've just added the patch titled
once: fix section mismatch on clang builds
to the 5.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
once-fix-section-mismatch-on-clang-builds.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 76d0ecd42da6e2cc54980363ba790591c277f71c Mon Sep 17 00:00:00 2001
From: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Date: Tue, 1 Nov 2022 18:12:39 +0100
Subject: once: fix section mismatch on clang builds
From: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
On older kernels (5.4 and older), building the kernel with clang can
cause the section name to end up with "" in them, which can cause lots
of runtime issues as that is not normally a valid portion of the string.
This was fixed up in newer kernels with commit 33def8498fdd ("treewide:
Convert macro and uses of __section(foo) to __section("foo")") but
that's too heavy-handed for older kernels.
So for now, fix up the problem that commit 62c07983bef9 ("once: add
DO_ONCE_SLOW() for sleepable contexts") caused by being backported by
removing the "" characters from the section definition.
Reported-by: Oleksandr Tymoshenko <ovt@xxxxxxxxxx>
Reported-by: Yongqin Liu <yongqin.liu@xxxxxxxxxx>
Tested-by: Yongqin Liu <yongqin.liu@xxxxxxxxxx>
Cc: Naresh Kamboju <naresh.kamboju@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20221029011211.4049810-1-ovt@xxxxxxxxxx
Link: https://lore.kernel.org/r/CAMSo37XApZ_F5nSQYWFsSqKdMv_gBpfdKG3KN1TDB+QNXqSh0A@xxxxxxxxxxxxxx
Cc: Christophe Leroy <christophe.leroy@xxxxxxxxxx>
Cc: Eric Dumazet <edumazet@xxxxxxxxxx>
Cc: Willy Tarreau <w@xxxxxx>
Cc: Christophe Leroy <christophe.leroy@xxxxxxxxxx>
Cc: David S. Miller <davem@xxxxxxxxxxxxx>
Cc: Sasha Levin <sashal@xxxxxxxxxx>
Cc: Nathan Chancellor <nathan@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
include/linux/once.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/include/linux/once.h
+++ b/include/linux/once.h
@@ -64,7 +64,7 @@ void __do_once_slow_done(bool *done, str
#define DO_ONCE_SLOW(func, ...) \
({ \
bool ___ret = false; \
- static bool __section(".data.once") ___done = false; \
+ static bool __section(.data.once) ___done = false; \
static DEFINE_STATIC_KEY_TRUE(___once_key); \
if (static_branch_unlikely(&___once_key)) { \
___ret = __do_once_slow_start(&___done); \
Patches currently in stable-queue which might be from gregkh@xxxxxxxxxxxxxxxxxxx are
queue-5.4/fbdev-smscufx-fix-several-use-after-free-bugs.patch
queue-5.4/mm-hugetlb-take-hugetlb_lock-before-decrementing-h-resv_huge_pages.patch
queue-5.4/xfs-finish-dfops-on-every-insert-range-shift-iteration.patch
queue-5.4/usb-add-reset_resume-quirk-for-nvidia-jetson-devices-in-rcm.patch
queue-5.4/drm-msm-dsi-fix-memory-corruption-with-too-many-bridges.patch
queue-5.4/perf-auxtrace-fix-address-filter-symbol-name-match-for-modules.patch
queue-5.4/cgroup-v1-add-disabled-controller-check-in-cgroup1_parse_param.patch
queue-5.4/drm-msm-hdmi-fix-memory-corruption-with-too-many-bridges.patch
queue-5.4/can-j1939-transport-j1939_session_skb_drop_old-spin_unlock_irqrestore-before-kfree_skb.patch
queue-5.4/iio-light-tsl2583-fix-module-unloading.patch
queue-5.4/usb-xhci-add-xhci_spurious_success-to-asm1042-despite-being-a-v0.96-controller.patch
queue-5.4/xfs-force-the-log-after-remapping-a-synchronous-writes-file.patch
queue-5.4/alsa-au88x0-use-explicitly-signed-char.patch
queue-5.4/can-kvaser_usb-fix-possible-completions-during-init_completion.patch
queue-5.4/s390-pci-add-missing-ex_table-entries-to-__pcistg_mio_inuser-__pcilg_mio_inuser.patch
queue-5.4/usb-dwc3-gadget-don-t-set-imi-for-no_interrupt.patch
queue-5.4/mtd-rawnand-marvell-use-correct-logic-for-nand-keep-config.patch
queue-5.4/mmc-core-fix-kernel-panic-when-remove-non-standard-sdio-card.patch
queue-5.4/xfs-clear-xfs_dq_freeing-if-we-can-t-lock-the-dquot-buffer-to-flush.patch
queue-5.4/mac802154-fix-lqi-recording.patch
queue-5.4/once-fix-section-mismatch-on-clang-builds.patch
queue-5.4/kernfs-fix-use-after-free-in-__kernfs_remove.patch
queue-5.4/xen-gntdev-don-t-ignore-kernel-unmapping-error.patch
queue-5.4/s390-futex-add-missing-ex_table-entry-to-__futex_atomic_op.patch
queue-5.4/xen-gntdev-prevent-leaking-grants.patch
queue-5.4/alsa-use-del_timer_sync-before-freeing-timer.patch
queue-5.4/tools-iio-iio_utils-fix-digit-calculation.patch
queue-5.4/net-ieee802154-fix-error-return-code-in-dgram_bind.patch
queue-5.4/usb-dwc3-gadget-stop-processing-more-requests-on-imi.patch
queue-5.4/xhci-remove-device-endpoints-from-bandwidth-list-when-freeing-the-device.patch
queue-5.4/usb-bdc-change-state-when-port-disconnected.patch
