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linux-stable/drivers
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Nikita Yushchenko 922b4b955a net: renesas: rswitch: rework ts tags management 
The existing linked list based implementation of how ts tags are
assigned and managed is unsafe against concurrency and corner cases:
- element addition in tx processing can race against element removal
  in ts queue completion,
- element removal in ts queue completion can race against element
  removal in device close,
- if a large number of frames gets added to tx queue without ts queue
  completions in between, elements with duplicate tag values can get
  added.

Use a different implementation, based on per-port used tags bitmaps and
saved skb arrays.

Safety for addition in tx processing vs removal in ts completion is
provided by:

    tag = find_first_zero_bit(...);
    smp_mb();
    <write rdev->ts_skb[tag]>
    set_bit(...);

  vs

    <read rdev->ts_skb[tag]>
    smp_mb();
    clear_bit(...);

Safety for removal in ts completion vs removal in device close is
provided by using atomic read-and-clear for rdev->ts_skb[tag]:

    ts_skb = xchg(&rdev->ts_skb[tag], NULL);
    if (ts_skb)
        <handle it>

Fixes: 33f5d733b5 ("net: renesas: rswitch: Improve TX timestamp accuracy")
Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Link: https://patch.msgid.link/20241212062558.436455-1-nikita.yoush@cogentembedded.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-12-15 14:39:10 -08:00
..
accel module: Convert symbol namespace to string literal 2024-12-02 11:34:44 -08:00
accessibility speakup: use SPKDIR=$(src) to specify the source directory 2024-11-04 17:53:09 +09:00
acpi arm64 fixes for 6.13-rc2: 2024-12-06 13:47:55 -08:00
amba ARM: 9415/1: amba: Add dev_is_amba() function and export it for modules 2024-11-12 16:41:45 +00:00
android Char/Misc/IIO/Whatever driver subsystem updates for 6.13-rc1 2024-11-29 11:58:27 -08:00
ata pci-v6.13-changes 2024-11-26 18:05:44 -08:00
atm Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
auxdisplay module: Convert symbol namespace to string literal 2024-12-02 11:34:44 -08:00
base - Have the Automatic IBRS setting check on AMD does not falsely fire in 2024-12-08 11:38:56 -08:00
bcma Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
block virtio-blk: don't keep queue frozen during system suspend 2024-12-05 10:00:20 -07:00
bluetooth Bluetooth: btmtk: avoid UAF in btmtk_process_coredump 2024-12-12 09:25:28 -05:00
bus Char/Misc/IIO/Whatever driver subsystem updates for 6.13-rc1 2024-11-29 11:58:27 -08:00
cache
cdrom Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
cdx module: Convert default symbol namespace to string literal 2024-12-03 08:22:25 -08:00
char Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
clk Two reverts and two EN7581 driver fixes: 2024-12-10 18:21:40 -08:00
clocksource Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
comedi comedi: Flush partial mappings in error case 2024-11-05 14:01:07 +01:00
connector
counter module: Convert symbol namespace to string literal 2024-12-02 11:34:44 -08:00
cpufreq powerpc updates for 6.13 2024-11-23 10:44:31 -08:00
cpuidle Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
crypto module: Convert default symbol namespace to string literal 2024-12-03 08:22:25 -08:00
cxl module: Convert symbol namespace to string literal 2024-12-02 11:34:44 -08:00
dax module: Convert symbol namespace to string literal 2024-12-02 11:34:44 -08:00
dca
devfreq Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
dio
dma module: Convert default symbol namespace to string literal 2024-12-03 08:22:25 -08:00
dma-buf drm fixes for 6.13-rc2 2024-12-06 11:52:15 -08:00
dpll dpll: add clock quality level attribute and op 2024-11-03 08:39:07 -08:00
edac Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
eisa
extcon Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
firewire firewire updates for v6.13 2024-11-25 17:12:54 -08:00
firmware module: Convert symbol namespace to string literal 2024-12-02 11:34:44 -08:00
fpga module: Convert symbol namespace to string literal 2024-12-02 11:34:44 -08:00
fsi Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
gnss
gpio module: Convert default symbol namespace to string literal 2024-12-03 08:22:25 -08:00
gpu drm fixes for -rc2, part 2 2024-12-06 13:16:41 -08:00
greybus greybus: Fix a typo 2024-11-05 05:33:46 +01:00
hid hid-for-linus-2024120501 2024-12-05 10:06:47 -08:00
hsi Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
hte Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
hv Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
hwmon module: Convert default symbol namespace to string literal 2024-12-03 08:22:25 -08:00
hwspinlock Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
hwtracing Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
i2c module: Convert default symbol namespace to string literal 2024-12-03 08:22:25 -08:00
i3c Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
idle intel_idle: add Granite Rapids Xeon D support 2024-11-11 15:48:50 +01:00
iio 24 hotfixes. 17 are cc:stable. 15 are MM and 9 are non-MM. 2024-12-08 11:26:13 -08:00
infiniband module: Convert symbol namespace to string literal 2024-12-02 11:34:44 -08:00
input Input updates for v6.13-rc0 2024-11-25 10:31:39 -08:00
interconnect Merge branch 'icc-sar2130p' into icc-next 2024-11-05 01:32:05 +02:00
iommu iommufd 6.13 first rc pull 2024-12-05 15:02:20 -08:00
ipack
irqchip - Fix a /proc/interrupts formatting regression 2024-12-08 11:54:04 -08:00
isdn mISDN: Fix typos 2024-11-09 09:14:12 -08:00
leds module: Convert symbol namespace to string literal 2024-12-02 11:34:44 -08:00
macintosh Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
mailbox TTY / Serial driver updates for 6.13-rc1 2024-11-30 09:03:16 -08:00
mcb module: Convert symbol namespace to string literal 2024-12-02 11:34:44 -08:00
md bcache: revert replacing IS_ERR_OR_NULL with IS_ERR again 2024-12-03 15:06:27 -07:00
media module: Convert symbol namespace to string literal 2024-12-02 11:34:44 -08:00
memory Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
memstick Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
message scsi: message: fusion: Constify struct pci_device_id 2024-11-20 21:38:24 -05:00
mfd module: Convert symbol namespace to string literal 2024-12-02 11:34:44 -08:00
misc module: Convert symbol namespace to string literal 2024-12-02 11:34:44 -08:00
mmc mmc: core: Further prevent card detect during shutdown 2024-12-02 15:37:16 +01:00
most
mtd This pull request contains updates for JFFS2, UBI and UBIFS: 2024-11-30 10:32:47 -08:00
mux
net net: renesas: rswitch: rework ts tags management 2024-12-15 14:39:10 -08:00
nfc
ntb
nubus
nvdimm module: Convert symbol namespace to string literal 2024-12-02 11:34:44 -08:00
nvme nvme fixes for Linux 6.13 2024-12-05 10:14:36 -07:00
nvmem Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
of Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
opp Additional power management updates for 6.13-rc1 2024-11-27 14:40:33 -08:00
parisc Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
parport Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
pci module: Convert symbol namespace to string literal 2024-12-02 11:34:44 -08:00
pcmcia Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
peci module: Convert symbol namespace to string literal 2024-12-02 11:34:44 -08:00
perf module: Convert symbol namespace to string literal 2024-12-02 11:34:44 -08:00
phy Driver core changes for 6.13-rc1 2024-11-29 11:43:29 -08:00
pinctrl module: Convert symbol namespace to string literal 2024-12-02 11:34:44 -08:00
platform platform-drivers-x86 for v6.13-2 2024-12-04 10:28:30 -08:00
pmdomain pmdomain core: 2024-12-06 11:24:00 -08:00
pnp
power power supply and reset changes for the 6.13 series 2024-11-28 09:28:09 -08:00
powercap module: Convert symbol namespace to string literal 2024-12-02 11:34:44 -08:00
pps Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
ps3 ps3: Correct some typos in comments 2024-11-15 00:32:29 +11:00
ptp ptp: kvm: x86: Return EOPNOTSUPP instead of ENODEV from kvm_arch_ptp_init() 2024-12-06 17:38:11 -08:00
pwm module: Convert default symbol namespace to string literal 2024-12-03 08:22:25 -08:00
rapidio
ras
regulator regulator: Fixes for v6.13 2024-11-28 09:40:53 -08:00
remoteproc remoteproc: qcom: wcss: Remove double assignment in q6v5_wcss_probe() 2024-11-15 20:36:27 -08:00
reset module: Convert symbol namespace to string literal 2024-12-02 11:34:44 -08:00
rpmsg Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
rtc module: Convert symbol namespace to string literal 2024-12-02 11:34:44 -08:00
s390 Driver core changes for 6.13-rc1 2024-11-29 11:43:29 -08:00
sbus Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
scsi scsi: scsi_debug: Fix hrtimer support for ndelay 2024-12-04 13:22:59 -05:00
sh sh updates for v6.13 2024-11-30 14:45:29 -08:00
siox
slimbus Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
soc Networking changes for 6.13. 2024-11-21 08:28:08 -08:00
soundwire module: Convert symbol namespace to string literal 2024-12-02 11:34:44 -08:00
spi spi: Fixes for v6.13 2024-12-06 11:36:48 -08:00
spmi Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
ssb
staging module: Convert symbol namespace to string literal 2024-12-02 11:34:44 -08:00
target Merge branch '6.13/scsi-queue' into 6.13/scsi-fixes 2024-12-02 12:36:18 -05:00
tc TC: Fix the wrong format specifier 2024-11-12 15:48:08 +01:00
tee Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
thermal module: Convert symbol namespace to string literal 2024-12-02 11:34:44 -08:00
thunderbolt USB / Thunderbolt (USB4) changes for 6.13-rc1 2024-11-29 11:19:31 -08:00
tty module: Convert default symbol namespace to string literal 2024-12-03 08:22:25 -08:00
ufs scsi: ufs: core: Add missing post notify for power mode change 2024-12-04 13:22:59 -05:00
uio Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
usb module: Convert default symbol namespace to string literal 2024-12-03 08:22:25 -08:00
vdpa vdpa/mlx5: Fix suboptimal range on iotlb iteration 2024-11-12 18:05:05 -05:00
vfio VFIO fixes for v6.13-rc3 2024-12-11 13:48:25 -08:00
vhost mm: page_frag: avoid caller accessing 'page_frag_cache' directly 2024-11-11 10:56:27 -08:00
video module: Convert symbol namespace to string literal 2024-12-02 11:34:44 -08:00
virt arm64 fixes for 6.13-rc2: 2024-12-06 13:47:55 -08:00
virtio virtio_ring: add a func argument 'recycle_done' to virtqueue_reset() 2024-12-10 11:22:21 +01:00
w1 Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
watchdog linux-watchdog 6.13-rc1 tag 2024-12-05 10:03:43 -08:00
xen module: Convert symbol namespace to string literal 2024-12-02 11:34:44 -08:00
zorro
Kconfig
Makefile