Package: src:linux
Version: 5.10.136-1
Severity: normal

I have written a server which sets SO_RCVLOWAT to 700, waits to receive 700 
byte, send back 2 byte and exit.
The related client sends 2 packets with 350 byte each, tries to receive two 
byte and exit.

If the server waits on the socket using a select call everything works as 
expected.

If the server calls recv without preceeding select the server hangs until I 
stop the client by hitting ctrl-c.
Wireshark shows that two packets each with 350 byte data are sent to the server 
and are acknowledged by the server. Neverthelss the recv call does not return.

I have removed all error checking to shorten the programs as much as possible.
If you start the server without parameter, it makes a call to select and only 
if that call is successfull it calls recv.
If you start the server with a parameter it does not call select but 
immediately calls recv.

On Debian 8 and 9 everything works as expected in both cases (server started 
with parameter and without parameter).
On Debian 10 and 11 the second variant only works unreliably – in most cases 
the server program hangs and receives the 700 byte only if I stop the client by 
pressing ctrl-c.

/*
 * server.c
 * compile with "gcc -o server server.c
 * run either "./server &" or "./server 1 &"
 * afterwards start the below client with "./client"
 */
#include <unistd.h>
#include <string.h>
#include <arpa/inet.h>
#include <stdio.h>

int main(int argc, char ** argv)
{
  struct sockaddr_in sin;
  int listenSocket;
  int rcvSocket;
  socklen_t len;
  struct sockaddr socketAddr;
  struct timeval tv;
  char buffer[700];
  int minBytes;
  fd_set rmask;
  int noWait=0;
  int rcvd;
  int one=1;

  if (argc > 1) {
    noWait = 1;
    fprintf(stderr, "running without select\n");
  }

  memset((char *) &sin, 0, sizeof(struct sockaddr_in));
  sin.sin_family = AF_INET;
  sin.sin_addr.s_addr = 0x0100007f;
  sin.sin_port = htons(5756);
  listenSocket = socket(AF_INET, SOCK_STREAM, 0);
  setsockopt(listenSocket, SOL_SOCKET, SO_REUSEADDR, (char *) &one, 
sizeof(one));
  bind(listenSocket, (struct sockaddr *) &sin, sizeof(sin));
  listen(listenSocket, 1);
  memset(&socketAddr, 0, sizeof(socketAddr));
  len = sizeof(socketAddr);
  rcvSocket = accept(listenSocket, &socketAddr, &len);

  minBytes = 700;
  setsockopt(rcvSocket, SOL_SOCKET, SO_RCVLOWAT, (char *) &minBytes, 
sizeof(int));

  tv.tv_sec = 10;
  tv.tv_usec = 0;
  FD_ZERO(&rmask);
  FD_SET(rcvSocket, &rmask);

  if (noWait || select(rcvSocket + 1, &rmask, (fd_set *) 0L, (fd_set *) 0L, 
&tv) > 0) {
    rcvd = recv(rcvSocket, buffer, 700, 0);
    fprintf(stderr, "received %d byte\n", rcvd);
    send(rcvSocket, "OK", 2, 0);

    shutdown(rcvSocket, SHUT_RDWR);
    close(rcvSocket);
  }

  shutdown(listenSocket, SHUT_RDWR);
  close(listenSocket);

  return 0;
}
/*
 * end of server.c
 */

/*
 * client.c
 * compile with "gcc -o client client.c
 * first run either the above "./server &" or "./server 1 &"
 * afterwards start client with "./client"
 */
#include <unistd.h>
#include <string.h>
#include <netdb.h>

int main(int argc, char ** argv)
{
  int socketNo;
  char buffer[350];
  struct addrinfo *ai;
  struct addrinfo hints;

  memset(&hints, 0, sizeof(hints));
  hints.ai_family = AF_INET;
  hints.ai_socktype = SOCK_STREAM;
  hints.ai_protocol = IPPROTO_TCP;

  getaddrinfo("localhost", "5756", &hints, &ai);
  socketNo = socket(AF_INET, SOCK_STREAM | SOCK_CLOEXEC, IPPROTO_TCP);
  connect(socketNo, ai->ai_addr, ai->ai_addrlen);
  freeaddrinfo(ai);

  memset(buffer, '1', 350);
  send(socketNo, buffer, 350, 0L);
  sleep(3);
  send(socketNo, buffer, 350, 0L);
  recv(socketNo, buffer, 2, 0);

  shutdown(socketNo, SHUT_RDWR);
  close(socketNo);

  return 0;
}
/*
 * end of client.c
 */




-- Package-specific info:
** Version:
Linux version 5.10.0-17-amd64 (debian-kernel@lists.debian.org) (gcc-10 (Debian 
10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2) #1 SMP 
Debian 5.10.136-1 (2022-08-13)

** Command line:
BOOT_IMAGE=/boot/vmlinuz-5.10.0-17-amd64 
root=UUID=72fa6125-16d6-4e09-9dd1-534c91cf447d ro quiet

** Not tainted

** Kernel log:
Unable to read kernel log; any relevant messages should be attached

** Model information
sys_vendor: TUXEDO
product_name: TUXEDO Pulse 14 Gen1
product_version: Standard
chassis_vendor: TUXEDO
chassis_version: Standard
bios_vendor: American Megatrends Inc.
bios_version: N.1.07.A03
board_vendor: TUXEDO Computers
board_name: PULSE1401
board_version: Standard

** Loaded modules:
nfnetlink_queue
nfnetlink_log
vhost_net
vhost
vhost_iotlb
tap
sd_mod
sg
uas
usb_storage
dm_mod
tun
xt_conntrack
ipt_REJECT
nf_reject_ipv4
ctr
ccm
xt_CHECKSUM
nft_chain_nat
xt_MASQUERADE
nf_nat
nf_conntrack
nf_defrag_ipv6
nf_defrag_ipv4
nft_counter
xt_tcpudp
nft_compat
bridge
stp
llc
nf_tables
libcrc32c
nfnetlink
cmac
algif_hash
algif_skcipher
af_alg
bnep
btusb
btrtl
btbcm
btintel
bluetooth
snd_hda_codec_realtek
edac_mce_amd
snd_hda_codec_generic
ledtrig_audio
snd_hda_codec_hdmi
kvm_amd
jitterentropy_rng
snd_hda_intel
iwlmvm
drbg
snd_intel_dspcfg
soundwire_intel
kvm
soundwire_generic_allocation
mac80211
snd_soc_core
uvcvideo
videobuf2_vmalloc
videobuf2_memops
videobuf2_v4l2
irqbypass
snd_compress
videobuf2_common
soundwire_cadence
joydev
aes_generic
ghash_clmulni_intel
libarc4
snd_hda_codec
binfmt_misc
videodev
snd_hda_core
iwlwifi
nls_ascii
aesni_intel
snd_hwdep
nls_cp437
soundwire_bus
crypto_simd
ansi_cprng
vfat
asus_wmi
cryptd
fat
cfg80211
glue_helper
mc
snd_pcm
ecdh_generic
sp5100_tco
sparse_keymap
ecc
rapl
wmi_bmof
libaes
snd_timer
serio_raw
pcspkr
hid_multitouch
k10temp
watchdog
efi_pstore
snd
ccp
soundcore
snd_rn_pci_acp3x
snd_pci_acp3x
rfkill
tpm_crb
tpm_tis
tpm_tis_core
tpm
rng_core
evdev
acpi_cpufreq
ac
nfsd
auth_rpcgss
nfs_acl
lockd
grace
msr
parport_pc
ppdev
lp
parport
sunrpc
fuse
configfs
efivarfs
ip_tables
x_tables
autofs4
ext4
crc16
mbcache
jbd2
crc32c_generic
amdgpu
gpu_sched
i2c_algo_bit
xhci_pci
xhci_hcd
ttm
nvme
drm_kms_helper
usbcore
nvme_core
r8169
ahci
t10_pi
cec
crc_t10dif
realtek
libahci
hid_generic
crct10dif_generic
mdio_devres
libata
drm
crct10dif_pclmul
crc32_pclmul
crc32c_intel
scsi_mod
libphy
i2c_piix4
usb_common
crct10dif_common
wmi
battery
i2c_hid
video
hid
button

** PCI devices:
00:00.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Renoir Root 
Complex [1022:1630]
        Subsystem: Tongfang Hongkong Limited Renoir Root Complex [1d05:109f]
        Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx-
        Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR- INTx-

00:00.2 IOMMU [0806]: Advanced Micro Devices, Inc. [AMD] Renoir IOMMU 
[1022:1631]
        Subsystem: Tongfang Hongkong Limited Renoir IOMMU [1d05:109f]
        Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR- INTx-
        Interrupt: pin A routed to IRQ 25
        Capabilities: <access denied>

00:01.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Renoir PCIe 
Dummy Host Bridge [1022:1632]
        Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx-
        Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR- INTx-
        IOMMU group: 0

00:01.2 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Renoir PCIe GPP 
Bridge [1022:1634] (prog-if 00 [Normal decode])
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR- INTx-
        Latency: 0, Cache Line Size: 64 bytes
        Interrupt: pin ? routed to IRQ 26
        IOMMU group: 1
        Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
        I/O behind bridge: [disabled]
        Memory behind bridge: fea00000-feafffff [size=1M]
        Prefetchable memory behind bridge: [disabled]
        Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort+ <SERR- <PERR-
        BridgeCtl: Parity- SERR+ NoISA- VGA- VGA16+ MAbort- >Reset- FastB2B-
                PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
        Capabilities: <access denied>
        Kernel driver in use: pcieport

00:01.3 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Renoir PCIe GPP 
Bridge [1022:1634] (prog-if 00 [Normal decode])
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR- INTx-
        Latency: 0, Cache Line Size: 64 bytes
        Interrupt: pin ? routed to IRQ 27
        IOMMU group: 2
        Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
        I/O behind bridge: 0000f000-0000ffff [size=4K]
        Memory behind bridge: fe900000-fe9fffff [size=1M]
        Prefetchable memory behind bridge: [disabled]
        Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort+ <SERR- <PERR-
        BridgeCtl: Parity- SERR+ NoISA- VGA- VGA16+ MAbort- >Reset- FastB2B-
                PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
        Capabilities: <access denied>
        Kernel driver in use: pcieport

00:02.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Renoir PCIe 
Dummy Host Bridge [1022:1632]
        Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx-
        Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR- INTx-
        IOMMU group: 3

00:02.4 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Renoir PCIe GPP 
Bridge [1022:1634] (prog-if 00 [Normal decode])
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR- INTx-
        Latency: 0, Cache Line Size: 64 bytes
        Interrupt: pin ? routed to IRQ 28
        IOMMU group: 4
        Bus: primary=00, secondary=03, subordinate=03, sec-latency=0
        I/O behind bridge: [disabled]
        Memory behind bridge: fe800000-fe8fffff [size=1M]
        Prefetchable memory behind bridge: [disabled]
        Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort+ <SERR- <PERR-
        BridgeCtl: Parity- SERR+ NoISA- VGA- VGA16+ MAbort- >Reset- FastB2B-
                PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
        Capabilities: <access denied>
        Kernel driver in use: pcieport

00:08.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Renoir PCIe 
Dummy Host Bridge [1022:1632]
        Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx-
        Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR- INTx-
        IOMMU group: 5

00:08.1 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Renoir Internal 
PCIe GPP Bridge to Bus [1022:1635] (prog-if 00 [Normal decode])
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR- INTx-
        Latency: 0, Cache Line Size: 64 bytes
        Interrupt: pin A routed to IRQ 29
        IOMMU group: 5
        Bus: primary=00, secondary=04, subordinate=04, sec-latency=0
        I/O behind bridge: 0000e000-0000efff [size=4K]
        Memory behind bridge: fe300000-fe6fffff [size=4M]
        Prefetchable memory behind bridge: 00000000d0000000-00000000e01fffff 
[size=258M]
        Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- <SERR- <PERR-
        BridgeCtl: Parity- SERR+ NoISA- VGA- VGA16+ MAbort- >Reset- FastB2B-
                PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
        Capabilities: <access denied>
        Kernel driver in use: pcieport

00:08.2 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Renoir Internal 
PCIe GPP Bridge to Bus [1022:1635] (prog-if 00 [Normal decode])
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR- INTx-
        Latency: 0, Cache Line Size: 64 bytes
        Interrupt: pin A routed to IRQ 30
        IOMMU group: 5
        Bus: primary=00, secondary=05, subordinate=05, sec-latency=0
        I/O behind bridge: [disabled]
        Memory behind bridge: fe700000-fe7fffff [size=1M]
        Prefetchable memory behind bridge: [disabled]
        Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- <SERR- <PERR-
        BridgeCtl: Parity- SERR+ NoISA- VGA- VGA16+ MAbort- >Reset- FastB2B-
                PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
        Capabilities: <access denied>
        Kernel driver in use: pcieport

00:14.0 SMBus [0c05]: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller 
[1022:790b] (rev 51)
        Subsystem: Tongfang Hongkong Limited FCH SMBus Controller [1d05:109f]
        Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx+
        Status: Cap- 66MHz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- 
<TAbort- <MAbort- >SERR- <PERR- INTx-
        IOMMU group: 6
        Kernel driver in use: piix4_smbus
        Kernel modules: i2c_piix4, sp5100_tco

00:14.3 ISA bridge [0601]: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge 
[1022:790e] (rev 51)
        Subsystem: Tongfang Hongkong Limited FCH LPC Bridge [1d05:109f]
        Control: I/O+ Mem+ BusMaster+ SpecCycle+ MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx-
        Status: Cap- 66MHz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- 
<TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0
        IOMMU group: 6

00:18.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Renoir Device 
24: Function 0 [1022:1448]
        Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx-
        Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR- INTx-
        IOMMU group: 7

00:18.1 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Renoir Device 
24: Function 1 [1022:1449]
        Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx-
        Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR- INTx-
        IOMMU group: 7

00:18.2 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Renoir Device 
24: Function 2 [1022:144a]
        Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx-
        Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR- INTx-
        IOMMU group: 7

00:18.3 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Renoir Device 
24: Function 3 [1022:144b]
        Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx-
        Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR- INTx-
        IOMMU group: 7
        Kernel driver in use: k10temp
        Kernel modules: k10temp

00:18.4 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Renoir Device 
24: Function 4 [1022:144c]
        Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx-
        Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR- INTx-
        IOMMU group: 7

00:18.5 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Renoir Device 
24: Function 5 [1022:144d]
        Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx-
        Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR- INTx-
        IOMMU group: 7

00:18.6 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Renoir Device 
24: Function 6 [1022:144e]
        Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx-
        Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR- INTx-
        IOMMU group: 7

00:18.7 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Renoir Device 
24: Function 7 [1022:144f]
        Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx-
        Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR- INTx-
        IOMMU group: 7

01:00.0 Network controller [0280]: Intel Corporation Wi-Fi 6 AX200 [8086:2723] 
(rev 1a)
        Subsystem: Intel Corporation Wi-Fi 6 AX200 [8086:0084]
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR- INTx-
        Latency: 0, Cache Line Size: 64 bytes
        Interrupt: pin A routed to IRQ 77
        IOMMU group: 8
        Region 0: Memory at fea00000 (64-bit, non-prefetchable) [size=16K]
        Capabilities: <access denied>
        Kernel driver in use: iwlwifi
        Kernel modules: iwlwifi

02:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. 
RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 15)
        DeviceName: Onboard LAN Brodcom
        Subsystem: Tongfang Hongkong Limited RTL8111/8168/8411 PCI Express 
Gigabit Ethernet Controller [1d05:109f]
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR- INTx-
        Latency: 0, Cache Line Size: 64 bytes
        Interrupt: pin A routed to IRQ 24
        IOMMU group: 9
        Region 0: I/O ports at f000 [size=256]
        Region 2: Memory at fe904000 (64-bit, non-prefetchable) [size=4K]
        Region 4: Memory at fe900000 (64-bit, non-prefetchable) [size=16K]
        Capabilities: <access denied>
        Kernel driver in use: r8169
        Kernel modules: r8169

03:00.0 Non-Volatile memory controller [0108]: Samsung Electronics Co Ltd NVMe 
SSD Controller SM981/PM981/PM983 [144d:a808] (prog-if 02 [NVM Express])
        Subsystem: Samsung Electronics Co Ltd NVMe SSD Controller 
SM981/PM981/PM983 [144d:a801]
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR- INTx-
        Latency: 0, Cache Line Size: 64 bytes
        Interrupt: pin A routed to IRQ 37
        NUMA node: 0
        IOMMU group: 10
        Region 0: Memory at fe800000 (64-bit, non-prefetchable) [size=16K]
        Capabilities: <access denied>
        Kernel driver in use: nvme
        Kernel modules: nvme

04:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. 
[AMD/ATI] Renoir [1002:1636] (rev c6) (prog-if 00 [VGA controller])
        Subsystem: Tongfang Hongkong Limited Renoir [1d05:109f]
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort+ <TAbort- 
<MAbort- >SERR- <PERR- INTx-
        Latency: 0, Cache Line Size: 64 bytes
        Interrupt: pin A routed to IRQ 64
        IOMMU group: 5
        Region 0: Memory at d0000000 (64-bit, prefetchable) [size=256M]
        Region 2: Memory at e0000000 (64-bit, prefetchable) [size=2M]
        Region 4: I/O ports at e000 [size=256]
        Region 5: Memory at fe600000 (32-bit, non-prefetchable) [size=512K]
        Capabilities: <access denied>
        Kernel driver in use: amdgpu
        Kernel modules: amdgpu

04:00.1 Audio device [0403]: Advanced Micro Devices, Inc. [AMD/ATI] Device 
[1002:1637]
        Subsystem: Tongfang Hongkong Limited Device [1d05:109f]
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR- INTx-
        Latency: 0, Cache Line Size: 64 bytes
        Interrupt: pin B routed to IRQ 96
        IOMMU group: 5
        Region 0: Memory at fe6c8000 (32-bit, non-prefetchable) [size=16K]
        Capabilities: <access denied>
        Kernel driver in use: snd_hda_intel
        Kernel modules: snd_hda_intel

04:00.2 Encryption controller [1080]: Advanced Micro Devices, Inc. [AMD] Family 
17h (Models 10h-1fh) Platform Security Processor [1022:15df]
        Subsystem: Tongfang Hongkong Limited Family 17h (Models 10h-1fh) 
Platform Security Processor [1d05:109f]
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR- INTx-
        Latency: 0, Cache Line Size: 64 bytes
        Interrupt: pin C routed to IRQ 74
        IOMMU group: 5
        Region 2: Memory at fe500000 (32-bit, non-prefetchable) [size=1M]
        Region 5: Memory at fe6cc000 (32-bit, non-prefetchable) [size=8K]
        Capabilities: <access denied>
        Kernel driver in use: ccp
        Kernel modules: ccp

04:00.3 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] Renoir USB 
3.1 [1022:1639] (prog-if 30 [XHCI])
        Subsystem: Tongfang Hongkong Limited Renoir USB 3.1 [1d05:109f]
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR- INTx-
        Latency: 0, Cache Line Size: 64 bytes
        Interrupt: pin D routed to IRQ 55
        IOMMU group: 5
        Region 0: Memory at fe400000 (64-bit, non-prefetchable) [size=1M]
        Capabilities: <access denied>
        Kernel driver in use: xhci_hcd
        Kernel modules: xhci_pci

04:00.4 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] Renoir USB 
3.1 [1022:1639] (prog-if 30 [XHCI])
        Subsystem: Tongfang Hongkong Limited Renoir USB 3.1 [1d05:109f]
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR- INTx-
        Latency: 0, Cache Line Size: 64 bytes
        Interrupt: pin A routed to IRQ 64
        IOMMU group: 5
        Region 0: Memory at fe300000 (64-bit, non-prefetchable) [size=1M]
        Capabilities: <access denied>
        Kernel driver in use: xhci_hcd
        Kernel modules: xhci_pci

04:00.5 Multimedia controller [0480]: Advanced Micro Devices, Inc. [AMD] 
Raven/Raven2/FireFlight/Renoir Audio Processor [1022:15e2] (rev 01)
        Subsystem: Tongfang Hongkong Limited Raven/Raven2/FireFlight/Renoir 
Audio Processor [1d05:109f]
        Control: I/O- Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR- INTx-
        Interrupt: pin B routed to IRQ 74
        IOMMU group: 5
        Region 0: Memory at fe680000 (32-bit, non-prefetchable) [size=256K]
        Capabilities: <access denied>
        Kernel modules: snd_pci_acp3x, snd_rn_pci_acp3x

04:00.6 Audio device [0403]: Advanced Micro Devices, Inc. [AMD] Family 17h 
(Models 10h-1fh) HD Audio Controller [1022:15e3]
        DeviceName: HD Audio Controller
        Subsystem: Tongfang Hongkong Limited Family 17h (Models 10h-1fh) HD 
Audio Controller [1d05:109f]
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR- INTx-
        Latency: 0, Cache Line Size: 64 bytes
        Interrupt: pin C routed to IRQ 38
        IOMMU group: 5
        Region 0: Memory at fe6c0000 (32-bit, non-prefetchable) [size=32K]
        Capabilities: <access denied>
        Kernel driver in use: snd_hda_intel
        Kernel modules: snd_hda_intel

05:00.0 SATA controller [0106]: Advanced Micro Devices, Inc. [AMD] FCH SATA 
Controller [AHCI mode] [1022:7901] (rev 81) (prog-if 01 [AHCI 1.0])
        Subsystem: Tongfang Hongkong Limited FCH SATA Controller [AHCI mode] 
[1d05:109f]
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR- INTx-
        Latency: 0, Cache Line Size: 64 bytes
        Interrupt: pin A routed to IRQ 33
        IOMMU group: 5
        Region 5: Memory at fe701000 (32-bit, non-prefetchable) [size=2K]
        Capabilities: <access denied>
        Kernel driver in use: ahci
        Kernel modules: ahci

05:00.1 SATA controller [0106]: Advanced Micro Devices, Inc. [AMD] FCH SATA 
Controller [AHCI mode] [1022:7901] (rev 81) (prog-if 01 [AHCI 1.0])
        Subsystem: Tongfang Hongkong Limited FCH SATA Controller [AHCI mode] 
[1d05:109f]
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR- INTx-
        Latency: 0, Cache Line Size: 64 bytes
        Interrupt: pin B routed to IRQ 35
        IOMMU group: 5
        Region 5: Memory at fe700000 (32-bit, non-prefetchable) [size=2K]
        Capabilities: <access denied>
        Kernel driver in use: ahci
        Kernel modules: ahci


** USB devices:
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 8087:0029 Intel Corp. AX200 Bluetooth
Bus 001 Device 003: ID 05e3:0608 Genesys Logic, Inc. Hub
Bus 001 Device 002: ID 04f2:b68b Chicony Electronics Co., Ltd HD Webcam
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub


-- System Information:
Debian Release: 11.4
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 5.10.0-17-amd64 (SMP w/16 CPU threads)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages linux-image-5.10.0-17-amd64 depends on:
ii  initramfs-tools [linux-initramfs-tool]  0.140
ii  kmod                                    28-1
ii  linux-base                              4.6

Versions of packages linux-image-5.10.0-17-amd64 recommends:
ii  apparmor             2.13.6-10
ii  firmware-linux-free  20200122-1

Versions of packages linux-image-5.10.0-17-amd64 suggests:
ii  debian-kernel-handbook  1.0.19
ii  grub-efi-amd64          2.04-20
pn  linux-doc-5.10          <none>

Versions of packages linux-image-5.10.0-17-amd64 is related to:
ii  firmware-amd-graphics     20210315-3
pn  firmware-atheros          <none>
pn  firmware-bnx2             <none>
pn  firmware-bnx2x            <none>
pn  firmware-brcm80211        <none>
pn  firmware-cavium           <none>
pn  firmware-intel-sound      <none>
pn  firmware-intelwimax       <none>
pn  firmware-ipw2x00          <none>
pn  firmware-ivtv             <none>
ii  firmware-iwlwifi          20210315-3
pn  firmware-libertas         <none>
pn  firmware-linux-nonfree    <none>
ii  firmware-misc-nonfree     20210315-3
pn  firmware-myricom          <none>
pn  firmware-netxen           <none>
pn  firmware-qlogic           <none>
ii  firmware-realtek          20210315-3
pn  firmware-samsung          <none>
pn  firmware-siano            <none>
pn  firmware-ti-connectivity  <none>
pn  xen-hypervisor            <none>

-- no debconf information

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