Bug#1126015: linux-image-6.17.13+deb14-rt-amd64: ethtool -x <sfc-net-driver-ifname> causes: rtmutex deadlock detected

Package:=20src:linux
Version:=206.17.13-1
Severity:=20critical
Justification:=20breaks=20the=20whole=20system
X-Debbugs-Cc:[email protected],[email protected]
User:[email protected]
Usertags:=20amd64

I=20am=20trying=20to=20read=20the=20receive=20flow=20hash=20indirection=20t=
able=20from=20a=20NIC=20serviced=20by=20the=20sfc=20driver=20and=20I=20get=
=20a=20hung=20system.

$=20ethtool=20-x=20enp1s0f0np0
Jan=2020=2014:30:30=20kernel:=20------------[=20cut=20here=20]------------
Jan=2020=2014:30:30=20kernel:=20rtmutex=20deadlock=20detected
Jan=2020=2014:30:30=20kernel:=20WARNING:=20CPU:=202=20PID:=201194=20at=20ke=
rnel/locking/rtmutex.c:1674=20__rt_mutex_slowlock_locked.constprop.0+0x1e8/=
0x220
Jan=2020=2014:30:30=20kernel:=20Modules=20linked=20in:=20rpcsec_gss_krb5=20=
nfsv4=20dns_resolver=20nfs=20lockd=20grace=20netfs=208021q=20garp=20stp=20l=
lc=20mrp=20binfmt_misc=20nls_ascii=20nls_cp437=20vfat=20fat=20intel_rapl_ms=
r=20intel_rapl_common=20x86_pkg_temp_thermal=20intel_powerclamp=20coretemp=
=20kvm_intel=20kvm=20jc42=20dell_smbios=20ppdev=20dell_wmi_descriptor=20pla=
tform_profile=20dcdbas=20irqbypass=20ghash_clmulni_intel=20mgag200=20aesni_=
intel=20drm_client_lib=20rapl=20drm_shmem_helper=20at24=20drm_kms_helper=20=
intel_cstate=20intel_uncore=20vga16fb=20i2c_algo_bit=20vgastate=20pcspkr=20=
acpi_cpufreq=20parport_pc=20parport=20intel_vbtn=20sparse_keymap=20joydev=
=20ipmi_ssif=20evdev=20button=20ie31200_edac=20sg=20onload(OE)=20acpi_ipmi=
=20ipmi_si=20ipmi_watchdog=20sfc_resource(OE)=20ipmi_devintf=20ipmi_msghand=
ler=20drm=20efi_pstore=20configfs=20auth_rpcgss=20sunrpc=20nfnetlink=20auto=
fs4=20ext4=20crc16=20mbcache=20jbd2=20crc32c_cryptoapi=20hid_generic=20usbh=
id=20hid=20dm_mod=20sd_mod=20iTCO_wdt=20ahci=20intel_pmc_bxt=20iTCO_vendor_=
support=20watchdog=20tg3=20libahci=20xhci_pci=20ehci_pci=20video=20sfc=20xh=
ci_hcd=20libphy=20ehci_hcd=20wmi=20battery=20libata=20usbcore=20mdio_bus=20=
mtd=20scsi_mod=20i2c_i801=20fan=20usb_common=20i2c_smbus=20scsi_common
Jan=2020=2014:30:30=20kernel:=20=20lpc_ich
Jan=2020=2014:30:30=20kernel:=20CPU:=202=20UID:=201100=20PID:=201194=20Comm=
:=20ethtool=20Tainted:=20G=20=20=20=20=20=20=20=20W=20=20OE=20=20=20=20=20=
=20=206.17.13+deb14-rt-amd64=20#1=20PREEMPT_{RT,(full)}=20=20Debian=206.17.=
13-1=20
Jan=2020=2014:30:30=20kernel:=20Tainted:=20[W]=3DWARN,=20[O]=3DOOT_MODULE,=
=20[E]=3DUNSIGNED_MODULE
Jan=2020=2014:30:30=20kernel:=20Hardware=20name:=20Dell=20Inc.=20PowerEdge=
=20R220/05Y15N,=20BIOS=201.4.0=2010/23/2014
Jan=2020=2014:30:30=20kernel:=20RIP:=200010:__rt_mutex_slowlock_locked.cons=
tprop.0+0x1e8/0x220
Jan=2020=2014:30:30=20kernel:=20Code:=2000=204c=2089=20e6=2048=2089=20ef=20=
e8=20b6=2035=20ca=2000=2041=2083=20fd=20dd=200f=2085=20d7=20fe=20ff=20ff=20=
48=2089=20ef=20e8=20f4=209c=20ca=2000=2048=20c7=20c7=206c=2051=205d=20a9=20=
e8=20a8=2000=20f6=20ff=20<0f>=200b=2066=2090=20b8=2001=2000=2000=2000=2087=
=2043=2018=20e8=20c7=203e=20fb=20ff=20eb=20ef=20bf=2001=2000=20
Jan=2020=2014:30:30=20kernel:=20RSP:=200018:ffffcdc24208f5a0=20EFLAGS:=2000=
010246
Jan=2020=2014:30:30=20kernel:=20RAX:=200000000000000000=20RBX:=20ffff8b14d3=
888000=20RCX:=200000000000000027
Jan=2020=2014:30:30=20kernel:=20RDX:=20ffff8b1617f1ce88=20RSI:=200000000000=
000001=20RDI:=20ffff8b1617f1ce80
Jan=2020=2014:30:30=20kernel:=20RBP:=20ffff8b14ca3d9150=20R08:=200000000000=
000000=20R09:=20ffffcdc24208f378
Jan=2020=2014:30:30=20kernel:=20R10:=20ffffffffa9ee3e48=20R11:=2000000000ff=
ffefff=20R12:=20ffffcdc24208f5a0
Jan=2020=2014:30:30=20kernel:=20R13:=2000000000ffffffdd=20R14:=20ffffcdc242=
08f648=20R15:=20ffffffffa9168880
Jan=2020=2014:30:30=20kernel:=20FS:=20=2000007f1bb6609b80(0000)=20GS:ffff8b=
166d501000(0000)=20knlGS:0000000000000000
Jan=2020=2014:30:30=20kernel:=20CS:=20=200010=20DS:=200000=20ES:=200000=20C=
R0:=200000000080050033
Jan=2020=2014:30:30=20kernel:=20CR2:=20000055f2ef901700=20CR3:=20000000013b=
2c4001=20CR4:=2000000000001726f0
Jan=2020=2014:30:30=20kernel:=20Call=20Trace:
Jan=2020=2014:30:30=20kernel:=20=20<TASK>
Jan=2020=2014:30:30=20kernel:=20=20rt_mutex_slowlock.constprop.0+0x4d/0xc0
Jan=2020=2014:30:30=20kernel:=20=20efx_mcdi_rx_pull_rss_config+0x28/0x60=20=
[sfc]=20
Jan=2020=2014:30:30=20kernel:=20=20efx_ethtool_get_rxfh+0x3b/0xd0=20[sfc]=
=20
Jan=2020=2014:30:30=20kernel:=20=20rss_prepare.isra.0+0x1c9/0x330
Jan=2020=2014:30:30=20kernel:=20=20ethnl_default_doit+0x147/0x3f0
Jan=2020=2014:30:30=20kernel:=20=20genl_family_rcv_msg_doit+0xff/0x160
Jan=2020=2014:30:30=20kernel:=20=20genl_rcv_msg+0x1aa/0x2b0
Jan=2020=2014:30:30=20kernel:=20=20?=20__pfx_ethnl_default_doit+0x10/0x10
Jan=2020=2014:30:30=20kernel:=20=20?=20__pfx_genl_rcv_msg+0x10/0x10
Jan=2020=2014:30:30=20kernel:=20=20netlink_rcv_skb+0x5c/0x110
Jan=2020=2014:30:30=20kernel:=20=20genl_rcv+0x28/0x40
Jan=2020=2014:30:30=20kernel:=20=20netlink_unicast+0x28f/0x3c0
Jan=2020=2014:30:30=20kernel:=20=20?=20__alloc_skb+0xdb/0x1a0
Jan=2020=2014:30:30=20kernel:=20=20netlink_sendmsg+0x20d/0x440
Jan=2020=2014:30:30=20kernel:=20=20__sys_sendto+0x1f5/0x200
Jan=2020=2014:30:30=20kernel:=20=20__x64_sys_sendto+0x24/0x30
Jan=2020=2014:30:30=20kernel:=20=20do_syscall_64+0x82/0x320
Jan=2020=2014:30:30=20kernel:=20=20?=20netlink_recvmsg+0x273/0x310
Jan=2020=2014:30:30=20kernel:=20=20?=20__check_object_size+0x48/0x200
Jan=2020=2014:30:30=20kernel:=20=20?=20mod_memcg_lruvec_state+0xe7/0x2e0
Jan=2020=2014:30:30=20kernel:=20=20?=20xas_load+0x11/0x100
Jan=2020=2014:30:30=20kernel:=20=20?=20__lruvec_stat_mod_folio+0x85/0xd0
Jan=2020=2014:30:30=20kernel:=20=20?=20xas_find+0x83/0x1b0
Jan=2020=2014:30:30=20kernel:=20=20?=20folio_add_file_rmap_ptes+0x3d/0xc0
Jan=2020=2014:30:30=20kernel:=20=20?=20next_uptodate_folio+0xa0/0x350
Jan=2020=2014:30:30=20kernel:=20=20?=20rt_spin_unlock+0x17/0x40
Jan=2020=2014:30:30=20kernel:=20=20?=20filemap_map_pages+0x4c7/0x5d0
Jan=2020=2014:30:30=20kernel:=20=20?=20do_fault+0x310/0x560
Jan=2020=2014:30:30=20kernel:=20=20?=20___pte_offset_map+0x1b/0xe0
Jan=2020=2014:30:30=20kernel:=20=20?=20__handle_mm_fault+0x2b3/0x380
Jan=2020=2014:30:30=20kernel:=20=20?=20count_memcg_events+0xd6/0x220
Jan=2020=2014:30:30=20kernel:=20=20?=20handle_mm_fault+0x1d6/0x2d0
Jan=2020=2014:30:30=20kernel:=20=20?=20do_user_addr_fault+0x21a/0x690
Jan=2020=2014:30:30=20kernel:=20=20?=20exc_page_fault+0x74/0x180
Jan=2020=2014:30:30=20kernel:=20=20entry_SYSCALL_64_after_hwframe+0x76/0x7e
Jan=2020=2014:30:30=20kernel:=20RIP:=200033:0x7f1bb669ceb2
Jan=2020=2014:30:30=20kernel:=20Code:=2018=2041=208b=2093=2008=2003=2000=20=
00=2059=205e=2048=2083=20f8=20fc=2075=201a=2083=20e2=2039=2083=20fa=2008=20=
75=2012=20e8=202b=20ff=20ff=20ff=200f=201f=2000=2049=2089=20ca=2048=208b=20=
44=2024=2020=200f=2005=20<48>=2083=20c4=2018=20c3=2066=200f=201f=2084=2000=
=2000=2000=2000=2000=2048=2083=20ec=2010=20ff=2074=2024=2018=20
Jan=2020=2014:30:30=20kernel:=20RSP:=20002b:00007ffd41813ba0=20EFLAGS:=2000=
000202=20ORIG_RAX:=20000000000000002c
Jan=2020=2014:30:30=20kernel:=20RAX:=20ffffffffffffffda=20RBX:=2000007ffd41=
813cd0=20RCX:=2000007f1bb669ceb2
Jan=2020=2014:30:30=20kernel:=20RDX:=200000000000000028=20RSI:=20000055f2fe=
d75420=20RDI:=200000000000000003
Jan=2020=2014:30:30=20kernel:=20RBP:=20000055f2fed75310=20R08:=2000007f1bb6=
831000=20R09:=20000000000000000c
Jan=2020=2014:30:30=20kernel:=20R10:=200000000000000000=20R11:=200000000000=
000202=20R12:=20000055f2fed753c0
Jan=2020=2014:30:30=20kernel:=20R13:=20000055f2fed753b0=20R14:=200000000000=
000000=20R15:=20000055f2ef9061dd
Jan=2020=2014:30:30=20kernel:=20=20</TASK>


enp1s0f0np0=20info:
$=20ethtool=20-i=20enp1s0f0np0
driver:=20sfc
version:=206.17.13+deb14-rt-amd64
firmware-version:=208.5.0.1002=20rx0=20tx0
expansion-rom-version:=20
bus-info:=200000:01:00.0
supports-statistics:=20yes
supports-test:=20yes
supports-eeprom-access:=20no
supports-register-dump:=20yes
supports-priv-flags:=20no


--=20System=20Information:
Debian=20Release:=20forky/sid
=20=20APT=20prefers=20oldstable-updates
=20=20APT=20policy:=20(500,=20'oldstable-updates'),=20(500,=20'oldstable-se=
curity'),=20(500,=20'testing'),=20(500,=20'oldstable'),=20(300,=20'unstable=
'),=20(200,=20'oldstable-proposed-updates'),=20(200,=20'experimental')
Architecture:=20amd64=20(x86_64)
Foreign=20Architectures:=20i386

Kernel:=20Linux=206.17.13+deb14-rt-amd64=20(SMP=20w/4=20CPU=20threads;=20PR=
EEMPT)
Kernel=20taint=20flags:=20TAINT_WARN,=20TAINT_OOT_MODULE,=20TAINT_UNSIGNED_=
MODULE
Locale:=20LANG=3Den_US.UTF-8,=20LC_CTYPE=3Den_US.UTF-8=20(charmap=3DUTF-8),=
=20LANGUAGE=20not=20set
Shell:=20/bin/sh=20linked=20to=20/usr/bin/dash
Init:=20systemd=20(via=20/run/systemd/system)

Versions=20of=20packages=20linux-image-6.17.13+deb14-rt-amd64=20depends=20o=
n:
ii=20=20initramfs-tools=20[linux-initramfs-tool]=20=200.150
ii=20=20kmod=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=2034.2-2
ii=20=20linux-base=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=204.15

Versions=20of=20packages=20linux-image-6.17.13+deb14-rt-amd64=20recommends:
pn=20=20apparmor=20=20<none>

Versions=20of=20packages=20linux-image-6.17.13+deb14-rt-amd64=20suggests:
pn=20=20debian-kernel-handbook=20=20<none>
ii=20=20firmware-linux-free=20=20=20=20=2020241210-2
ii=20=20grub-pc=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=202.14~git2=
0250718.0e36779-2
pn=20=20linux-doc-6.17=20=20=20=20=20=20=20=20=20=20<none>

Versions=20of=20packages=20linux-image-6.17.13+deb14-rt-amd64=20is=20relate=
d=20to:
ii=20=20firmware-amd-graphics=20=20=20=20=20=2020230210-5
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pn=20=20firmware-bnx2=20=20=20=20=20=20=20=20=20=20=20=20=20=20<none>
pn=20=20firmware-bnx2x=20=20=20=20=20=20=20=20=20=20=20=20=20<none>
pn=20=20firmware-brcm80211=20=20=20=20=20=20=20=20=20<none>
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pn=20=20firmware-intel-sound=20=20=20=20=20=20=20<none>
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pn=20=20firmware-marvell-prestera=20=20<none>
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--=20no=20debconf=20information