[External] Re: Question - Livepatch/Kprobe Coexistence on Ftrace-enabled Functions (Ubuntu kernel based on Linux stable 5.15.30)
Andrey Grodzovsky
andrey.grodzovsky at crowdstrike.com
Mon Oct 20 16:45:40 UTC 2025
On 10/20/25 12:03, Song Liu wrote:
> On Mon, Oct 20, 2025 at 7:56 AM Andrey Grodzovsky
> <andrey.grodzovsky at crowdstrike.com> wrote:
> [...]
>>> If you build the kernel from source code, there are some samples in
>>> samples/livepatch that you can use for testing. PS: You need to enable
>>>
>>> CONFIG_SAMPLE_LIVEPATCH=m
>>>
>>> I hope this helps.
>> Thanks Song, working on repro, kernel rebuilt, test module is loading
>> but, bpftrace is refusing to attach now to fentries/fexits claiming the
>> costum kernel is not supporting it. It did
>> attach in the case of stock AWS kernel i copied the .config from. So
>> just trying to figure out now if some Kcofnig flags are missing or
>> different . Let me know in case you manage to confirm yourself in the
>> meanwhile the fix works for
>> you.
> Yes, it worked in my tests.
>
> [root@(none) /]# kpatch load linux/samples/livepatch/livepatch-sample.ko
> loading patch module: linux/samples/livepatch/livepatch-sample.ko
> [root@(none) /]# bpftrace.real -e 'fexit:cmdline_proc_show
> {printf("fexit\n");}' &
> [1] 388
> [root@(none) /]# Attached 1 probe
> [root@(none) /]# bpftrace.real -e 'fentry:cmdline_proc_show
> {printf("fentry\n");}' &
> [2] 397
> [root@(none) /]# Attached 1 probe
>
> [root@(none) /]# cat /proc/cmdline
> this has been live patched
> fentry
> fexit
>
> Thanks,
> Song
>
Verified the failures I observe when trying to attach with BPF trace are
only in presence of patch you provided.
Please see attached dmesg for failures. Initial warning on boot.
Subsequebt warnings and errors at the point i try to run
sudo bpftrace -e "fexit:cmdline_proc_show { printf(\"fexit hit\\n\");
exit(); }"
sudo: unable to resolve host ip-10-10-115-238: Temporary failure in name
resolution
stdin:1:1-25: ERROR: kfunc/kretfunc not available for your kernel version.
ubuntu at ip-10-10-115-238:~/linux-6.8.1$ sudo cat
/sys/kernel/debug/tracing/available_filter_functions | grep
cmdline_proc_show
sudo: unable to resolve host ip-10-10-115-238: Temporary failure in name
resolution
cat: /sys/kernel/debug/tracing/available_filter_functions: No such device
After reboot and before trying to attacg with bpftrace,
/sys/kernel/debug/tracing/available_filter_functions is available and
shows all function.
Using stable kernel from
https://cdn.kernel.org/pub/linux/kernel/v6.x/linux-6.8.1.tar.gz for build.
FTRACE related KCONFIGs bellow
ubuntu at ip-10-10-115-238:~$ cat /boot/config-6.8.1 | grep TRACE
CONFIG_TASKS_TRACE_RCU=y
CONFIG_SYSCTL_EXCEPTION_TRACE=y
CONFIG_TRACEPOINTS=y
CONFIG_STACKTRACE_SUPPORT=y
CONFIG_PM_TRACE=y
CONFIG_PM_TRACE_RTC=y
CONFIG_KPROBES_ON_FTRACE=y
CONFIG_HAVE_KPROBES_ON_FTRACE=y
CONFIG_ARCH_CORRECT_STACKTRACE_ON_KRETPROBE=y
CONFIG_TRACE_IRQFLAGS_SUPPORT=y
CONFIG_TRACE_IRQFLAGS_NMI_SUPPORT=y
CONFIG_HAVE_ARCH_TRACEHOOK=y
CONFIG_HAVE_RELIABLE_STACKTRACE=y
CONFIG_NETFILTER_XT_TARGET_TRACE=m
# CONFIG_DMA_FENCE_TRACE is not set
CONFIG_SCSI_IPR_TRACE=y
# CONFIG_ATH5K_TRACER is not set
# CONFIG_DRM_I915_LOW_LEVEL_TRACEPOINTS is not set
CONFIG_STM_SOURCE_FTRACE=m
# CONFIG_PSTORE_FTRACE is not set
# CONFIG_STACKTRACE_BUILD_ID is not set
CONFIG_STACKTRACE=y
# CONFIG_RCU_TRACE is not set
CONFIG_USER_STACKTRACE_SUPPORT=y
CONFIG_NOP_TRACER=y
CONFIG_HAVE_FUNCTION_TRACER=y
CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
CONFIG_HAVE_DYNAMIC_FTRACE=y
CONFIG_HAVE_DYNAMIC_FTRACE_WITH_REGS=y
CONFIG_HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS=y
CONFIG_HAVE_DYNAMIC_FTRACE_WITH_ARGS=y
CONFIG_HAVE_DYNAMIC_FTRACE_NO_PATCHABLE=y
CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
CONFIG_TRACER_MAX_TRACE=y
CONFIG_TRACE_CLOCK=y
CONFIG_CONTEXT_SWITCH_TRACER=y
CONFIG_GENERIC_TRACER=y
CONFIG_FTRACE=y
CONFIG_FUNCTION_TRACER=y
CONFIG_FUNCTION_GRAPH_TRACER=y
CONFIG_DYNAMIC_FTRACE=y
CONFIG_DYNAMIC_FTRACE_WITH_REGS=y
CONFIG_DYNAMIC_FTRACE_WITH_DIRECT_CALLS=y
CONFIG_DYNAMIC_FTRACE_WITH_ARGS=y
CONFIG_STACK_TRACER=y
# CONFIG_IRQSOFF_TRACER is not set
CONFIG_SCHED_TRACER=y
CONFIG_HWLAT_TRACER=y
CONFIG_OSNOISE_TRACER=y
CONFIG_TIMERLAT_TRACER=y
CONFIG_MMIOTRACE=y
CONFIG_FTRACE_SYSCALLS=y
CONFIG_TRACER_SNAPSHOT=y
# CONFIG_TRACER_SNAPSHOT_PER_CPU_SWAP is not set
CONFIG_BLK_DEV_IO_TRACE=y
# CONFIG_KPROBE_EVENTS_ON_NOTRACE is not set
CONFIG_FTRACE_MCOUNT_RECORD=y
CONFIG_FTRACE_MCOUNT_USE_CC=y
CONFIG_TRACE_EVENT_INJECT=y
# CONFIG_TRACEPOINT_BENCHMARK is not set
# CONFIG_TRACE_EVAL_MAP_FILE is not set
# CONFIG_FTRACE_RECORD_RECURSION is not set
# CONFIG_FTRACE_STARTUP_TEST is not set
CONFIG_FTRACE_SORT_STARTUP_TEST=y
# CONFIG_MMIOTRACE_TEST is not set
# CONFIG_SAMPLE_TRACE_EVENTS is not set
# CONFIG_SAMPLE_TRACE_CUSTOM_EVENTS is not set
CONFIG_SAMPLE_TRACE_PRINTK=m
CONFIG_SAMPLE_FTRACE_DIRECT=m
# CONFIG_SAMPLE_FTRACE_DIRECT_MULTI is not set
# CONFIG_SAMPLE_FTRACE_OPS is not set
CONFIG_SAMPLE_TRACE_ARRAY=m
CONFIG_HAVE_SAMPLE_FTRACE_DIRECT=y
CONFIG_HAVE_SAMPLE_FTRACE_DIRECT_MULTI=y
CONFIG_HAVE_MMIOTRACE_SUPPORT=y
CONFIG_CC_HAS_SANCOV_TRACE_PC=y
# CONFIG_BACKTRACE_SELF_TEST is not set
Andrey
-------------- next part --------------
[ 0.958579] NET: Registered PF_INET6 protocol family
[ 0.960794] Segment Routing with IPv6
[ 0.961819] In-situ OAM (IOAM) with IPv6
[ 0.962927] NET: Registered PF_PACKET protocol family
[ 0.964393] Key type dns_resolver registered
[ 0.968676] No MBM correction factor available
[ 0.969933] IPI shorthand broadcast: enabled
[ 0.972554] sched_clock: Marking stable (673007499, 299279483)->(1155822036, -183535054)
[ 0.974892] registered taskstats version 1
[ 0.977043] Loading compiled-in X.509 certificates
[ 0.979081] Loaded X.509 cert 'Build time autogenerated kernel key: 774d7f8f61628ad4e8d329abbb98ef067d7b43a9'
[ 0.985242] Key type .fscrypt registered
[ 0.986488] Key type fscrypt-provisioning registered
[ 0.988673] Key type encrypted registered
[ 0.989923] AppArmor: AppArmor sha256 policy hashing enabled
[ 0.991934] ima: No TPM chip found, activating TPM-bypass!
[ 0.993570] Loading compiled-in module X.509 certificates
[ 0.996021] Loaded X.509 cert 'Build time autogenerated kernel key: 774d7f8f61628ad4e8d329abbb98ef067d7b43a9'
[ 0.999303] ima: Allocated hash algorithm: sha256
[ 1.000769] ima: No architecture policies found
[ 1.002184] evm: Initialising EVM extended attributes:
[ 1.003740] evm: security.selinux
[ 1.004829] evm: security.SMACK64
[ 1.005916] evm: security.SMACK64EXEC
[ 1.007085] evm: security.SMACK64TRANSMUTE
[ 1.008389] evm: security.SMACK64MMAP
[ 1.009567] evm: security.apparmor
[ 1.010663] evm: security.ima
[ 1.011651] evm: security.capability
[ 1.012788] evm: HMAC attrs: 0x1
[ 1.014248] PM: Magic number: 13:837:285
[ 1.019035] ------------[ cut here ]------------
[ 1.020163] WARNING: CPU: 10 PID: 1 at kernel/trace/ftrace.c:2589 ftrace_get_addr_new+0x10c/0x120
[ 1.022417] Modules linked in:
[ 1.023417] CPU: 10 PID: 1 Comm: swapper/0 Not tainted 6.8.1 #1
[ 1.025148] Hardware name: Amazon EC2 c5.4xlarge/, BIOS 1.0 10/16/2017
[ 1.027039] RIP: 0010:ftrace_get_addr_new+0x10c/0x120
[ 1.028559] Code: 00 48 85 c0 74 9d 5b 41 5c 41 5d 5d 31 d2 31 c9 31 f6 31 ff c3 cc cc cc cc 48 8b 3f e8 5d fe ff ff 48 85 c0 0f 85 38 ff ff ff <0f> 0b 48 8b 43 08 e9 0f ff ff ff 66 0f 1f 84 00 00 00 00 00 90 90
[ 1.033947] RSP: 0000:ffffa8bbc0027808 EFLAGS: 00010246
[ 1.035521] RAX: 0000000000000000 RBX: ffff88bf800ec540 RCX: 0000000000000000
[ 1.037587] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 1.039648] RBP: ffffa8bbc0027820 R08: 0000000000000000 R09: 0000000000000000
[ 1.041713] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88bf800ec540
[ 1.043773] R13: 0000000000000001 R14: ffffffffa39aef08 R15: ffffffffa2206cca
[ 1.045836] FS: 0000000000000000(0000) GS:ffff88c665900000(0000) knlGS:0000000000000000
[ 1.048143] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1.049851] CR2: 0000000000000000 CR3: 000000037203c001 CR4: 00000000007706f0
[ 1.051926] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1.053992] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1.056061] PKRU: 55555554
[ 1.056978] Call Trace:
[ 1.057833] <TASK>
[ 1.058584] ? show_regs+0x6d/0x80
[ 1.059676] ? __warn+0x89/0x150
[ 1.060714] ? ftrace_get_addr_new+0x10c/0x120
[ 1.062073] ? report_bug+0x16a/0x190
[ 1.063219] ? handle_bug+0x51/0xa0
[ 1.064351] ? exc_invalid_op+0x18/0x80
[ 1.065547] ? asm_exc_invalid_op+0x1b/0x20
[ 1.066840] ? ftrace_get_addr_new+0x10c/0x120
[ 1.068207] ? ftrace_get_addr_new+0x103/0x120
[ 1.069576] ftrace_replace_code+0x11d/0x1b0
[ 1.070894] ftrace_modify_all_code+0x15e/0x1a0
[ 1.072317] arch_ftrace_update_code+0x9/0x20
[ 1.073666] ftrace_startup+0xcc/0x180
[ 1.074855] register_ftrace_function_nolock+0x24/0x70
[ 1.076438] register_ftrace_direct+0x2ed/0x370
[ 1.077838] ? 0xffffffffc010ca00
[ 1.078923] ? __pfx___hid_bpf_tail_call+0x10/0x10
[ 1.080404] bpf_trampoline_update+0x469/0x650
[ 1.081775] ? 0xffffffffc010ca00
[ 1.082833] ? 0xffffffffc010ca00
[ 1.083881] __bpf_trampoline_link_prog+0x10d/0x2d0
[ 1.085359] bpf_trampoline_link_prog+0x2b/0x50
[ 1.086700] bpf_tracing_prog_attach+0x3c2/0x5f0
[ 1.088073] bpf_raw_tp_link_attach+0x206/0x2d0
[ 1.089430] __sys_bpf+0x1120/0x2500
[ 1.090531] kern_sys_bpf+0x61/0x1e0
[ 1.091635] ? close_fd+0x58/0x80
[ 1.092664] skel_raw_tracepoint_open.constprop.0+0x43/0x70
[ 1.094297] hid_bpf_preload_skel+0x111/0x180
[ 1.095596] ? __pfx_hid_bpf_init+0x10/0x10
[ 1.096849] hid_bpf_init+0x1e/0xc0
[ 1.097930] do_one_initcall+0x5e/0x310
[ 1.099092] kernel_init_freeable+0x359/0x500
[ 1.100403] ? __pfx_kernel_init+0x10/0x10
[ 1.101628] kernel_init+0x1b/0x200
[ 1.102695] ret_from_fork+0x47/0x70
[ 1.103790] ? __pfx_kernel_init+0x10/0x10
[ 1.105011] ret_from_fork_asm+0x1b/0x30
[ 1.106207] </TASK>
[ 1.106931] ---[ end trace 0000000000000000 ]---
[ 1.109385] RAS: Correctable Errors collector initialized.
[ 1.111113] clk: Disabling unused clocks
[ 1.416156] input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input2
[ 1.418725] md: Waiting for all devices to be available before autodetect
[ 1.419892] md: If you don't use raid, use raid=noautodetect
[ 1.420894] md: Autodetecting RAID arrays.
[ 1.421656] md: autorun ...
[ 1.422215] md: ... autorun DONE.
[ 1.429543] EXT4-fs (nvme0n1p1): mounted filesystem 6387caa1-122f-48bc-b447-9f1386d06e06 ro with ordered data mode. Quota mode: none.
[ 1.431922] VFS: Mounted root (ext4 filesystem) readonly on device 259:1.
[ 1.434051] devtmpfs: mounted
[ 1.435734] Freeing unused decrypted memory: 2028K
[ 1.437643] Freeing unused kernel image (initmem) memory: 4984K
[ 1.439121] Write protecting the kernel read-only data: 34816k
[ 1.440674] Freeing unused kernel image (rodata/data gap) memory: 872K
[ 1.486425] x86/mm: Checked W+X mappings: passed, no W+X pages found.
[ 1.487559] x86/mm: Checking user space page tables
[ 1.531530] x86/mm: Checked W+X mappings: passed, no W+X pages found.
[ 1.532674] Run /sbin/init as init process
[ 1.533460] with arguments:
[ 1.533462] /sbin/init
[ 1.533463] with environment:
[ 1.533464] HOME=/
[ 1.533465] TERM=linux
[ 1.533465] BOOT_IMAGE=/vmlinuz-6.8.1
[ 1.691160] systemd[1]: Inserted module 'autofs4'
[ 1.739692] systemd[1]: systemd 255.4-1ubuntu8 running in system mode (+PAM +AUDIT +SELINUX +APPARMOR +IMA +SMACK +SECCOMP +GCRYPT -GNUTLS +OPENSSL +ACL +BLKID +CURL +ELFUTILS +FIDO2 +IDN2 -IDN +IPTC +KMOD +LIBCRYPTSETUP +LIBFDISK +PCRE2 -PWQUALITY +P11KIT +QRENCODE +TPM2 +BZIP2 +LZ4 +XZ +ZLIB +ZSTD -BPF_FRAMEWORK -XKBCOMMON +UTMP +SYSVINIT default-hierarchy=unified)
[ 1.745330] systemd[1]: Detected virtualization amazon.
[ 1.746574] systemd[1]: Detected architecture x86-64.
[ 1.751410] systemd[1]: Hostname set to <ip-10-10-115-238>.
[ 2.144939] systemd[1]: Queued start job for default target graphical.target.
[ 2.169782] systemd[1]: Created slice system-modprobe.slice - Slice /system/modprobe.
[ 2.173549] systemd[1]: Created slice system-serial\x2dgetty.slice - Slice /system/serial-getty.
[ 2.177997] systemd[1]: Created slice system-systemd\x2dfsck.slice - Slice /system/systemd-fsck.
[ 2.181785] systemd[1]: Created slice user.slice - User and Session Slice.
[ 2.184612] systemd[1]: Started ntpsec-systemd-netif.path.
[ 2.187009] systemd[1]: Started systemd-ask-password-wall.path - Forward Password Requests to Wall Directory Watch.
[ 2.191530] systemd[1]: Set up automount proc-sys-fs-binfmt_misc.automount - Arbitrary Executable File Formats File System Automount Point.
[ 2.196152] systemd[1]: Expecting device dev-disk-by\x2dlabel-BOOT.device - /dev/disk/by-label/BOOT...
[ 2.200018] systemd[1]: Expecting device dev-disk-by\x2dlabel-UEFI.device - /dev/disk/by-label/UEFI...
[ 2.203876] systemd[1]: Expecting device dev-ttyS0.device - /dev/ttyS0...
[ 2.206699] systemd[1]: Reached target integritysetup.target - Local Integrity Protected Volumes.
[ 2.210142] systemd[1]: Reached target slices.target - Slice Units.
[ 2.213182] systemd[1]: Reached target swap.target - Swaps.
[ 2.215621] systemd[1]: Reached target veritysetup.target - Local Verity Protected Volumes.
[ 2.219064] systemd[1]: Listening on dm-event.socket - Device-mapper event daemon FIFOs.
[ 2.222434] systemd[1]: Listening on lvm2-lvmpolld.socket - LVM2 poll daemon socket.
[ 2.226036] systemd[1]: Listening on multipathd.socket - multipathd control socket.
[ 2.242149] systemd[1]: Listening on rpcbind.socket - RPCbind Server Activation Socket.
[ 2.246074] systemd[1]: Listening on syslog.socket - Syslog Socket.
[ 2.249145] systemd[1]: Listening on systemd-fsckd.socket - fsck to fsckd communication Socket.
[ 2.252891] systemd[1]: Listening on systemd-initctl.socket - initctl Compatibility Named Pipe.
[ 2.256663] systemd[1]: Listening on systemd-journald-dev-log.socket - Journal Socket (/dev/log).
[ 2.260465] systemd[1]: Listening on systemd-journald.socket - Journal Socket.
[ 2.263756] systemd[1]: Listening on systemd-networkd.socket - Network Service Netlink Socket.
[ 2.267430] systemd[1]: systemd-pcrextend.socket - TPM2 PCR Extension (Varlink) was skipped because of an unmet condition check (ConditionSecurity=measured-uki).
[ 2.270426] systemd[1]: Listening on systemd-udevd-control.socket - udev Control Socket.
[ 2.273935] systemd[1]: Listening on systemd-udevd-kernel.socket - udev Kernel Socket.
[ 2.291382] systemd[1]: Mounting dev-hugepages.mount - Huge Pages File System...
[ 2.295171] systemd[1]: Mounting dev-mqueue.mount - POSIX Message Queue File System...
[ 2.299230] systemd[1]: Mounting sys-kernel-debug.mount - Kernel Debug File System...
[ 2.303059] systemd[1]: Mounting sys-kernel-tracing.mount - Kernel Trace File System...
[ 2.306079] systemd[1]: auth-rpcgss-module.service - Kernel Module supporting RPCSEC_GSS was skipped because of an unmet condition check (ConditionPathExists=/etc/krb5.keytab).
[ 2.310195] systemd[1]: Starting keyboard-setup.service - Set the console keyboard layout...
[ 2.314585] systemd[1]: Starting kmod-static-nodes.service - Create List of Static Device Nodes...
[ 2.319415] systemd[1]: Starting lvm2-monitor.service - Monitoring of LVM2 mirrors, snapshots etc. using dmeventd or progress polling...
[ 2.324999] systemd[1]: Starting modprobe at configfs.service - Load Kernel Module configfs...
[ 2.328934] systemd[1]: Starting modprobe at dm_mod.service - Load Kernel Module dm_mod...
[ 2.332977] systemd[1]: Starting modprobe at drm.service - Load Kernel Module drm...
[ 2.337481] systemd[1]: Starting modprobe at efi_pstore.service - Load Kernel Module efi_pstore...
[ 2.341518] systemd[1]: Starting modprobe at fuse.service - Load Kernel Module fuse...
[ 2.345226] systemd[1]: Starting modprobe at loop.service - Load Kernel Module loop...
[ 2.348111] systemd[1]: netplan-ovs-cleanup.service - OpenVSwitch configuration for cleanup was skipped because of an unmet condition check (ConditionFileIsExecutable=/usr/bin/ovs-vsctl).
[ 2.351100] pstore: Using crash dump compression: deflate
[ 2.352436] systemd[1]: Starting systemd-fsck-root.service - File System Check on Root Device...
[ 2.356026] pstore: Registered efi_pstore as persistent store backend
[ 2.358847] systemd[1]: Starting systemd-journald.service - Journal Service...
[ 2.364360] systemd[1]: Starting systemd-modules-load.service - Load Kernel Modules...
[ 2.366617] systemd[1]: systemd-pcrmachine.service - TPM2 PCR Machine ID Measurement was skipped because of an unmet condition check (ConditionSecurity=measured-uki).
[ 2.370028] systemd[1]: systemd-tpm2-setup-early.service - TPM2 SRK Setup (Early) was skipped because of an unmet condition check (ConditionSecurity=measured-uki).
[ 2.373850] systemd[1]: Starting systemd-udev-trigger.service - Coldplug All udev Devices...
[ 2.377223] systemd[1]: Mounted dev-hugepages.mount - Huge Pages File System.
[ 2.380691] systemd[1]: Mounted dev-mqueue.mount - POSIX Message Queue File System.
[ 2.383791] systemd[1]: Mounted sys-kernel-debug.mount - Kernel Debug File System.
[ 2.385162] systemd-journald[255]: Collecting audit messages is disabled.
[ 2.387968] systemd[1]: Mounted sys-kernel-tracing.mount - Kernel Trace File System.
[ 2.391368] systemd[1]: Finished keyboard-setup.service - Set the console keyboard layout.
[ 2.394953] systemd[1]: Finished kmod-static-nodes.service - Create List of Static Device Nodes.
[ 2.398483] systemd[1]: modprobe at configfs.service: Deactivated successfully.
[ 2.399910] systemd[1]: Finished modprobe at configfs.service - Load Kernel Module configfs.
[ 2.403776] systemd[1]: modprobe at dm_mod.service: Deactivated successfully.
[ 2.405468] systemd[1]: Finished modprobe at dm_mod.service - Load Kernel Module dm_mod.
[ 2.408695] systemd[1]: Finished lvm2-monitor.service - Monitoring of LVM2 mirrors, snapshots etc. using dmeventd or progress polling.
[ 2.412929] systemd[1]: modprobe at drm.service: Deactivated successfully.
[ 2.414661] systemd[1]: Finished modprobe at drm.service - Load Kernel Module drm.
[ 2.417973] systemd[1]: Started systemd-journald.service - Journal Service.
[ 2.545456] EXT4-fs (nvme0n1p1): re-mounted 6387caa1-122f-48bc-b447-9f1386d06e06 r/w. Quota mode: none.
[ 2.572734] systemd-journald[255]: Received client request to flush runtime journal.
[ 2.594301] systemd-journald[255]: /var/log/journal/ec220e94df30bda465b15689b7378e3a/system.journal: Journal file uses a different sequence number ID, rotating.
[ 2.594307] systemd-journald[255]: Rotating system journal.
[ 2.761565] piix4_smbus 0000:00:01.3: SMBus base address uninitialized - upgrade BIOS or use force_addr=0xaddr
[ 2.786745] ena 0000:00:05.0: ENA device version: 0.10
[ 2.786750] ena 0000:00:05.0: ENA controller version: 0.0.1 implementation version 1
[ 2.802370] parport_pc 00:03: reported by Plug and Play ACPI
[ 2.841917] ena 0000:00:05.0: Elastic Network Adapter (ENA) found at mem c0510000, mac addr 12:67:59:84:01:a5
[ 2.852675] ppdev: user-space parallel port driver
[ 2.853640] ena 0000:00:05.0 ens5: renamed from eth0
[ 2.860372] RAPL PMU: API unit is 2^-32 Joules, 0 fixed counters, 10737418240 ms ovfl timer
[ 2.866183] cryptd: max_cpu_qlen set to 1000
[ 2.899090] AVX2 version of gcm_enc/dec engaged.
[ 2.899202] AES CTR mode by8 optimization enabled
[ 2.984184] EXT4-fs (nvme0n1p16): mounted filesystem 9d39f3ff-b465-4c20-9ec1-06182226356c r/w with ordered data mode. Quota mode: none.
[ 3.084656] audit: type=1400 audit(1760973474.672:2): apparmor="STATUS" operation="profile_load" profile="unconfined" name="busybox" pid=708 comm="apparmor_parser"
[ 3.084663] audit: type=1400 audit(1760973474.672:3): apparmor="STATUS" operation="profile_load" profile="unconfined" name="crun" pid=714 comm="apparmor_parser"
[ 3.084665] audit: type=1400 audit(1760973474.672:4): apparmor="STATUS" operation="profile_load" profile="unconfined" name="ch-checkns" pid=710 comm="apparmor_parser"
[ 3.084668] audit: type=1400 audit(1760973474.672:5): apparmor="STATUS" operation="profile_load" profile="unconfined" name="devhelp" pid=715 comm="apparmor_parser"
[ 3.084671] audit: type=1400 audit(1760973474.672:6): apparmor="STATUS" operation="profile_load" profile="unconfined" name="Discord" pid=703 comm="apparmor_parser"
[ 3.084697] audit: type=1400 audit(1760973474.672:7): apparmor="STATUS" operation="profile_load" profile="unconfined" name="brave" pid=706 comm="apparmor_parser"
[ 3.084727] audit: type=1400 audit(1760973474.672:8): apparmor="STATUS" operation="profile_load" profile="unconfined" name="vscode" pid=713 comm="apparmor_parser"
[ 3.084763] audit: type=1400 audit(1760973474.672:9): apparmor="STATUS" operation="profile_load" profile="unconfined" name="ch-run" pid=711 comm="apparmor_parser"
[ 3.084794] audit: type=1400 audit(1760973474.672:10): apparmor="STATUS" operation="profile_load" profile="unconfined" name="element-desktop" pid=716 comm="apparmor_parser"
[ 3.502649] RPC: Registered named UNIX socket transport module.
[ 3.502652] RPC: Registered udp transport module.
[ 3.502653] RPC: Registered tcp transport module.
[ 3.502654] RPC: Registered tcp-with-tls transport module.
[ 3.502655] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 3.674659] input: ImPS/2 Generic Wheel Mouse as /devices/platform/i8042/serio1/input/input4
[ 4.013037] 8021q: 802.1Q VLAN Support v1.8
[ 4.140597] cfg80211: Loading compiled-in X.509 certificates for regulatory database
[ 4.140856] Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'
[ 4.140992] Loaded X.509 cert 'wens: 61c038651aabdcf94bd0ac7ff06c7248db18c600'
[ 4.141693] platform regulatory.0: Direct firmware load for regulatory.db failed with error -2
[ 4.141696] cfg80211: failed to load regulatory.db
[ 9.730872] kauditd_printk_skb: 94 callbacks suppressed
[ 9.730875] audit: type=1400 audit(1760973481.318:105): apparmor="STATUS" operation="profile_replace" info="same as current profile, skipping" profile="unconfined" name="rsyslogd" pid=1152 comm="apparmor_parser"
[ 9.906210] NET: Registered PF_QIPCRTR protocol family
[ 10.657618] audit: type=1400 audit(1760973482.245:106): apparmor="STATUS" operation="profile_load" profile="unconfined" name="docker-default" pid=1353 comm="apparmor_parser"
[ 10.743033] evm: overlay not supported
[ 10.843306] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[ 10.852812] Bridge firewalling registered
[ 11.008539] Initializing XFRM netlink socket
[ 49.644664] systemd-journald[255]: /var/log/journal/ec220e94df30bda465b15689b7378e3a/user-1000.journal: Journal file uses a different sequence number ID, rotating.
[ 1237.397558] ------------[ cut here ]------------
[ 1237.397562] WARNING: CPU: 12 PID: 1988 at arch/x86/kernel/ftrace.c:99 ftrace_verify_code+0x4a/0x90
[ 1237.397569] Modules linked in: xt_conntrack nft_chain_nat xt_MASQUERADE nf_nat nf_conntrack_netlink nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 xfrm_user xfrm_algo xt_addrtype nft_compat nf_tables libcrc32c br_netfilter bridge qrtr overlay cfg80211 8021q garp mrp stp llc sunrpc binfmt_misc intel_rapl_msr intel_rapl_common nls_iso8859_1 intel_uncore_frequency_common isst_if_common nfit crct10dif_pclmul crc32_pclmul polyval_clmulni polyval_generic ghash_clmulni_intel sha256_ssse3 sha1_ssse3 aesni_intel crypto_simd cryptd rapl ppdev parport_pc psmouse ena parport i2c_piix4 input_leds mac_hid serio_raw dm_multipath msr efi_pstore nfnetlink dmi_sysfs ip_tables x_tables autofs4
[ 1237.397610] CPU: 12 PID: 1988 Comm: bpftrace Tainted: G W 6.8.1 #1
[ 1237.397613] Hardware name: Amazon EC2 c5.4xlarge/, BIOS 1.0 10/16/2017
[ 1237.397614] RIP: 0010:ftrace_verify_code+0x4a/0x90
[ 1237.397616] Code: 00 48 89 45 f0 31 c0 c7 45 eb 00 00 00 00 c6 45 ef 00 e8 09 9c 2f 00 48 85 c0 75 41 8b 03 39 45 eb 74 2d 48 89 1d 26 01 be 02 <0f> 0b b8 ea ff ff ff 48 8b 55 f0 65 48 2b 14 25 28 00 00 00 75 26
[ 1237.397618] RSP: 0018:ffffa8bbc1d7fbd8 EFLAGS: 00010286
[ 1237.397621] RAX: 000000001d8d3be8 RBX: ffffffffa39aef08 RCX: 0000000000000000
[ 1237.397622] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 1237.397623] RBP: ffffa8bbc1d7fbf0 R08: 0000000000000000 R09: 0000000000000000
[ 1237.397625] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffffa39aef08
[ 1237.397626] R13: 0000000000000001 R14: ffff88bf80114d20 R15: ffffffffa39aef08
[ 1237.397627] FS: 00007fa3bcbd0780(0000) GS:ffff88c665a00000(0000) knlGS:0000000000000000
[ 1237.397629] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1237.397630] CR2: 00007ffe71155124 CR3: 0000000117032001 CR4: 00000000007706f0
[ 1237.397636] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1237.397637] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1237.397639] PKRU: 55555554
[ 1237.397640] Call Trace:
[ 1237.397641] <TASK>
[ 1237.397643] ? show_regs+0x6d/0x80
[ 1237.397649] ? __warn+0x89/0x150
[ 1237.397653] ? ftrace_verify_code+0x4a/0x90
[ 1237.397655] ? report_bug+0x16a/0x190
[ 1237.397659] ? handle_bug+0x51/0xa0
[ 1237.397662] ? exc_invalid_op+0x18/0x80
[ 1237.397664] ? asm_exc_invalid_op+0x1b/0x20
[ 1237.397668] ? ftrace_verify_code+0x4a/0x90
[ 1237.397669] ? ftrace_verify_code+0x37/0x90
[ 1237.397670] ftrace_replace_code+0x71/0x1b0
[ 1237.397673] ftrace_modify_all_code+0x125/0x1a0
[ 1237.397675] ? 0xffffffffc01206c0
[ 1237.397684] arch_ftrace_update_code+0x9/0x20
[ 1237.397686] ftrace_shutdown.part.0+0x114/0x1e0
[ 1237.397688] ? 0xffffffffc01206c0
[ 1237.397690] ? 0xffffffffc01206c0
[ 1237.397691] unregister_ftrace_function+0x47/0x170
[ 1237.397693] ? 0xffffffffc01206c0
[ 1237.397694] ? 0xffffffffc01206c0
[ 1237.397696] unregister_ftrace_direct+0x60/0x1e0
[ 1237.397697] ? kmalloc_trace+0x136/0x310
[ 1237.397700] ? bpf_trampoline_update+0x68/0x650
[ 1237.397703] ? 0xffffffffc01206c0
[ 1237.397704] ? __pfx_sched_fork+0x10/0x10
[ 1237.397707] bpf_trampoline_update+0x4f7/0x650
[ 1237.397709] bpf_trampoline_unlink_prog+0x9d/0x130
[ 1237.397711] bpf_tracing_link_release+0x16/0x50
[ 1237.397715] bpf_link_free+0x55/0x80
[ 1237.397717] bpf_link_release+0x26/0x40
[ 1237.397719] __fput+0xa1/0x2e0
[ 1237.397723] __fput_sync+0x1c/0x30
[ 1237.397725] __x64_sys_close+0x3e/0x90
[ 1237.397728] do_syscall_64+0x85/0x180
[ 1237.397732] ? syscall_exit_to_user_mode+0x86/0x260
[ 1237.397736] ? do_syscall_64+0x92/0x180
[ 1237.397738] ? do_syscall_64+0x92/0x180
[ 1237.397740] ? do_syscall_64+0x92/0x180
[ 1237.397743] ? irqentry_exit+0x21/0x40
[ 1237.397745] ? exc_page_fault+0x94/0x190
[ 1237.397748] entry_SYSCALL_64_after_hwframe+0x6e/0x76
[ 1237.397752] RIP: 0033:0x7fa3b4f166f4
[ 1237.397755] Code: 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 80 3d 55 49 0f 00 00 74 13 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 3c c3 0f 1f 00 55 48 89 e5 48 83 ec 10 89 7d
[ 1237.397756] RSP: 002b:00007ffe7113d028 EFLAGS: 00000202 ORIG_RAX: 0000000000000003
[ 1237.397758] RAX: ffffffffffffffda RBX: 0000555e10456800 RCX: 00007fa3b4f166f4
[ 1237.397760] RDX: 0000000000000010 RSI: 00007ffe7113cf60 RDI: 0000000000000004
[ 1237.397761] RBP: 00007ffe7113d080 R08: 0000555e0f7fb86c R09: 0000000000000000
[ 1237.397762] R10: 00007ffe7113ba00 R11: 0000000000000202 R12: 0000000000000004
[ 1237.397763] R13: 0000000000000003 R14: 0000555e0f7faeac R15: 00007ffe7113d750
[ 1237.397765] </TASK>
[ 1237.397766] ---[ end trace 0000000000000000 ]---
[ 1237.397767] ------------[ ftrace bug ]------------
[ 1237.397768] ftrace failed to modify
[ 1237.397769] [<ffffffffa0f47980>] sched_fork+0x0/0x260
[ 1237.397771] actual: e8:db:38:f6:ff
[ 1237.397773] expected: e8:3b:8d:1d:1f
[ 1237.397775] Setting ftrace call site to NOP
[ 1237.397775] ftrace record flags: e8980000
[ 1237.397776] (0) R tramp: ERROR!
expected tramp: ffffffffc01206c0
[ 1237.397787] ------------[ cut here ]------------
[ 1237.397788] WARNING: CPU: 12 PID: 1988 at kernel/trace/ftrace.c:2179 ftrace_bug+0x10d/0x2d0
[ 1237.397790] Modules linked in: xt_conntrack nft_chain_nat xt_MASQUERADE nf_nat nf_conntrack_netlink nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 xfrm_user xfrm_algo xt_addrtype nft_compat nf_tables libcrc32c br_netfilter bridge qrtr overlay cfg80211 8021q garp mrp stp llc sunrpc binfmt_misc intel_rapl_msr intel_rapl_common nls_iso8859_1 intel_uncore_frequency_common isst_if_common nfit crct10dif_pclmul crc32_pclmul polyval_clmulni polyval_generic ghash_clmulni_intel sha256_ssse3 sha1_ssse3 aesni_intel crypto_simd cryptd rapl ppdev parport_pc psmouse ena parport i2c_piix4 input_leds mac_hid serio_raw dm_multipath msr efi_pstore nfnetlink dmi_sysfs ip_tables x_tables autofs4
[ 1237.397819] CPU: 12 PID: 1988 Comm: bpftrace Tainted: G W 6.8.1 #1
[ 1237.397821] Hardware name: Amazon EC2 c5.4xlarge/, BIOS 1.0 10/16/2017
[ 1237.397821] RIP: 0010:ftrace_bug+0x10d/0x2d0
[ 1237.397823] Code: 07 00 e8 46 df f2 ff 41 f6 44 24 0b 08 0f 85 18 01 00 00 4c 89 e7 e8 a2 fc ff ff 48 c7 c7 7d 51 77 a2 48 89 c6 e8 23 df f2 ff <0f> 0b c7 05 af cf 3d 02 01 00 00 00 5b c7 05 b4 cf 3d 02 00 00 00
[ 1237.397824] RSP: 0018:ffffa8bbc1d7fbd8 EFLAGS: 00010246
[ 1237.397826] RAX: 0000000000000022 RBX: ffffffffa344a640 RCX: 0000000000000000
[ 1237.397827] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 1237.397828] RBP: ffffa8bbc1d7fbf0 R08: 0000000000000000 R09: 0000000000000000
[ 1237.397829] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88bf80114d20
[ 1237.397830] R13: ffffffffa0f47980 R14: ffff88bf80114d20 R15: ffffffffa39aef08
[ 1237.397831] FS: 00007fa3bcbd0780(0000) GS:ffff88c665a00000(0000) knlGS:0000000000000000
[ 1237.397833] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1237.397834] CR2: 00007ffe71155124 CR3: 0000000117032001 CR4: 00000000007706f0
[ 1237.397839] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1237.397840] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1237.397841] PKRU: 55555554
[ 1237.397842] Call Trace:
[ 1237.397843] <TASK>
[ 1237.397844] ? show_regs+0x6d/0x80
[ 1237.397846] ? __warn+0x89/0x150
[ 1237.397849] ? ftrace_bug+0x10d/0x2d0
[ 1237.397850] ? report_bug+0x16a/0x190
[ 1237.397853] ? handle_bug+0x51/0xa0
[ 1237.397854] ? exc_invalid_op+0x18/0x80
[ 1237.397856] ? asm_exc_invalid_op+0x1b/0x20
[ 1237.397858] ? __pfx_sched_fork+0x10/0x10
[ 1237.397859] ? ftrace_bug+0x10d/0x2d0
[ 1237.397861] ? ftrace_bug+0x10d/0x2d0
[ 1237.397863] ftrace_replace_code+0xc7/0x1b0
[ 1237.397864] ftrace_modify_all_code+0x125/0x1a0
[ 1237.397866] ? 0xffffffffc01206c0
[ 1237.397868] arch_ftrace_update_code+0x9/0x20
[ 1237.397870] ftrace_shutdown.part.0+0x114/0x1e0
[ 1237.397871] ? 0xffffffffc01206c0
[ 1237.397873] ? 0xffffffffc01206c0
[ 1237.397874] unregister_ftrace_function+0x47/0x170
[ 1237.397876] ? 0xffffffffc01206c0
[ 1237.397877] ? 0xffffffffc01206c0
[ 1237.397878] unregister_ftrace_direct+0x60/0x1e0
[ 1237.397880] ? kmalloc_trace+0x136/0x310
[ 1237.397882] ? bpf_trampoline_update+0x68/0x650
[ 1237.397884] ? 0xffffffffc01206c0
[ 1237.397885] ? __pfx_sched_fork+0x10/0x10
[ 1237.397886] bpf_trampoline_update+0x4f7/0x650
[ 1237.397889] bpf_trampoline_unlink_prog+0x9d/0x130
[ 1237.397891] bpf_tracing_link_release+0x16/0x50
[ 1237.397893] bpf_link_free+0x55/0x80
[ 1237.397895] bpf_link_release+0x26/0x40
[ 1237.397897] __fput+0xa1/0x2e0
[ 1237.397899] __fput_sync+0x1c/0x30
[ 1237.397901] __x64_sys_close+0x3e/0x90
[ 1237.397903] do_syscall_64+0x85/0x180
[ 1237.397906] ? syscall_exit_to_user_mode+0x86/0x260
[ 1237.397908] ? do_syscall_64+0x92/0x180
[ 1237.397911] ? do_syscall_64+0x92/0x180
[ 1237.397913] ? do_syscall_64+0x92/0x180
[ 1237.397915] ? irqentry_exit+0x21/0x40
[ 1237.397917] ? exc_page_fault+0x94/0x190
[ 1237.397920] entry_SYSCALL_64_after_hwframe+0x6e/0x76
[ 1237.397922] RIP: 0033:0x7fa3b4f166f4
[ 1237.397924] Code: 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 80 3d 55 49 0f 00 00 74 13 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 3c c3 0f 1f 00 55 48 89 e5 48 83 ec 10 89 7d
[ 1237.397925] RSP: 002b:00007ffe7113d028 EFLAGS: 00000202 ORIG_RAX: 0000000000000003
[ 1237.397927] RAX: ffffffffffffffda RBX: 0000555e10456800 RCX: 00007fa3b4f166f4
[ 1237.397928] RDX: 0000000000000010 RSI: 00007ffe7113cf60 RDI: 0000000000000004
[ 1237.397929] RBP: 00007ffe7113d080 R08: 0000555e0f7fb86c R09: 0000000000000000
[ 1237.397930] R10: 00007ffe7113ba00 R11: 0000000000000202 R12: 0000000000000004
[ 1237.397931] R13: 0000000000000003 R14: 0000555e0f7faeac R15: 00007ffe7113d750
[ 1237.397933] </TASK>
[ 1237.397934] ---[ end trace 0000000000000000 ]---
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