[Kernel-packages] [Bug 1896504] Re: tc/ebpf: unable to use BPF_FUNC_skb_change_head
This bug was fixed in the package linux - 5.4.0-56.62 --- linux (5.4.0-56.62) focal; urgency=medium * focal/linux: 5.4.0-56.62 -proposed tracker (LP: #1905300) * CVE-2020-4788 - selftests/powerpc: rfi_flush: disable entry flush if present - powerpc/64s: flush L1D on kernel entry - powerpc/64s: flush L1D after user accesses - selftests/powerpc: entry flush test linux (5.4.0-55.61) focal; urgency=medium * focal/linux: 5.4.0-55.61 -proposed tracker (LP: #1903175) * Update kernel packaging to support forward porting kernels (LP: #1902957) - [Debian] Update for leader included in BACKPORT_SUFFIX * Avoid double newline when running insertchanges (LP: #1903293) - [Packaging] insertchanges: avoid double newline * EFI: Fails when BootCurrent entry does not exist (LP: #183) - efivarfs: Replace invalid slashes with exclamation marks in dentries. * CVE-2020-14351 - perf/core: Fix race in the perf_mmap_close() function * raid10: Block discard is very slow, causing severe delays for mkfs and fstrim operations (LP: #1896578) - md: add md_submit_discard_bio() for submitting discard bio - md/raid10: extend r10bio devs to raid disks - md/raid10: pull codes that wait for blocked dev into one function - md/raid10: improve raid10 discard request - md/raid10: improve discard request for far layout - dm raid: fix discard limits for raid1 and raid10 - dm raid: remove unnecessary discard limits for raid10 * Bionic: btrfs: kernel BUG at /build/linux- eTBZpZ/linux-4.15.0/fs/btrfs/ctree.c:3233! (LP: #1902254) - btrfs: drop unnecessary offset_in_page in extent buffer helpers - btrfs: extent_io: do extra check for extent buffer read write functions - btrfs: extent-tree: kill BUG_ON() in __btrfs_free_extent() - btrfs: extent-tree: kill the BUG_ON() in insert_inline_extent_backref() - btrfs: ctree: check key order before merging tree blocks * Ethernet no link lights after reboot (Intel i225-v 2.5G) (LP: #1902578) - igc: Add PHY power management control * Undetected Data corruption in MPI workloads that use VSX for reductions on POWER9 DD2.1 systems (LP: #1902694) - powerpc: Fix undetected data corruption with P9N DD2.1 VSX CI load emulation - selftests/powerpc: Make alignment handler test P9N DD2.1 vector CI load workaround * [20.04 FEAT] Support/enhancement of NVMe IPL (LP: #1902179) - s390: nvme ipl - s390: nvme reipl - s390/ipl: support NVMe IPL kernel parameters * uvcvideo: add mapping for HEVC payloads (LP: #1895803) - media: uvcvideo: Add mapping for HEVC payloads * Focal update: v5.4.73 upstream stable release (LP: #1902115) - ibmveth: Switch order of ibmveth_helper calls. - ibmveth: Identify ingress large send packets. - ipv4: Restore flowi4_oif update before call to xfrm_lookup_route - mlx4: handle non-napi callers to napi_poll - net: fec: Fix phy_device lookup for phy_reset_after_clk_enable() - net: fec: Fix PHY init after phy_reset_after_clk_enable() - net: fix pos incrementment in ipv6_route_seq_next - net/smc: fix valid DMBE buffer sizes - net/tls: sendfile fails with ktls offload - net: usb: qmi_wwan: add Cellient MPL200 card - tipc: fix the skb_unshare() in tipc_buf_append() - socket: fix option SO_TIMESTAMPING_NEW - can: m_can_platform: don't call m_can_class_suspend in runtime suspend - can: j1935: j1939_tp_tx_dat_new(): fix missing initialization of skbcnt - net: j1939: j1939_session_fresh_new(): fix missing initialization of skbcnt - net/ipv4: always honour route mtu during forwarding - net_sched: remove a redundant goto chain check - r8169: fix data corruption issue on RTL8402 - cxgb4: handle 4-tuple PEDIT to NAT mode translation - binder: fix UAF when releasing todo list - ALSA: bebob: potential info leak in hwdep_read() - ALSA: hda/hdmi: fix incorrect locking in hdmi_pcm_close - nvme-pci: disable the write zeros command for Intel 600P/P3100 - chelsio/chtls: fix socket lock - chelsio/chtls: correct netdevice for vlan interface - chelsio/chtls: correct function return and return type - ibmvnic: save changed mac address to adapter->mac_addr - net: ftgmac100: Fix Aspeed ast2600 TX hang issue - net: hdlc: In hdlc_rcv, check to make sure dev is an HDLC device - net: hdlc_raw_eth: Clear the IFF_TX_SKB_SHARING flag after calling ether_setup - net: Properly typecast int values to set sk_max_pacing_rate - net/sched: act_tunnel_key: fix OOB write in case of IPv6 ERSPAN tunnels - nexthop: Fix performance regression in nexthop deletion - nfc: Ensure presence of NFC_ATTR_FIRMWARE_NAME attribute in nfc_genl_fw_download() - r8169: fix operation under forced interrupt threading - selftests: forwarding: Add missing 'rp_filter' configuration - tcp: fix to update snd_wl1 in bulk receiver fast
[Kernel-packages] [Bug 1896504] Re: tc/ebpf: unable to use BPF_FUNC_skb_change_head
** Tags removed: verification-needed-focal
** Tags added: verification-done-focal
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https://bugs.launchpad.net/bugs/1896504
Title:
tc/ebpf: unable to use BPF_FUNC_skb_change_head
Status in linux package in Ubuntu:
Incomplete
Status in linux source package in Focal:
Fix Committed
Status in linux source package in Groovy:
Incomplete
Bug description:
[Impact]
tc ebpf program that uses BPF_FUNC_skb_change_head are rejected.
This helper exists since linux v4.10, but it cannot be used until the the
upstream commit 6f3f65d80dac ("net: bpf: Allow TC programs to call
BPF_FUNC_skb_change_head"):
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6f3f65d80dac
[Test Case]
Create a, ebpf program that uses this helper and load it with tc.
[Regression Potential]
The patch is trivial, the potential regressions are low.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1896504/+subscriptions
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[Kernel-packages] [Bug 1896504] Re: tc/ebpf: unable to use BPF_FUNC_skb_change_head
This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
focal' to 'verification-done-focal'. If the problem still exists, change
the tag 'verification-needed-focal' to 'verification-failed-focal'.
If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.
See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
to enable and use -proposed. Thank you!
** Tags added: verification-needed-focal
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https://bugs.launchpad.net/bugs/1896504
Title:
tc/ebpf: unable to use BPF_FUNC_skb_change_head
Status in linux package in Ubuntu:
Incomplete
Status in linux source package in Focal:
Fix Committed
Status in linux source package in Groovy:
Incomplete
Bug description:
[Impact]
tc ebpf program that uses BPF_FUNC_skb_change_head are rejected.
This helper exists since linux v4.10, but it cannot be used until the the
upstream commit 6f3f65d80dac ("net: bpf: Allow TC programs to call
BPF_FUNC_skb_change_head"):
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6f3f65d80dac
[Test Case]
Create a, ebpf program that uses this helper and load it with tc.
[Regression Potential]
The patch is trivial, the potential regressions are low.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1896504/+subscriptions
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[Kernel-packages] [Bug 1896504] Re: tc/ebpf: unable to use BPF_FUNC_skb_change_head
** Changed in: linux (Ubuntu Focal)
Status: Confirmed => Fix Committed
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https://bugs.launchpad.net/bugs/1896504
Title:
tc/ebpf: unable to use BPF_FUNC_skb_change_head
Status in linux package in Ubuntu:
Incomplete
Status in linux source package in Focal:
Fix Committed
Status in linux source package in Groovy:
Incomplete
Bug description:
[Impact]
tc ebpf program that uses BPF_FUNC_skb_change_head are rejected.
This helper exists since linux v4.10, but it cannot be used until the the
upstream commit 6f3f65d80dac ("net: bpf: Allow TC programs to call
BPF_FUNC_skb_change_head"):
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6f3f65d80dac
[Test Case]
Create a, ebpf program that uses this helper and load it with tc.
[Regression Potential]
The patch is trivial, the potential regressions are low.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1896504/+subscriptions
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[Kernel-packages] [Bug 1896504] Re: tc/ebpf: unable to use BPF_FUNC_skb_change_head
** Also affects: linux (Ubuntu Focal)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Groovy)
Importance: Undecided
Status: Incomplete
** Changed in: linux (Ubuntu Focal)
Status: New => Confirmed
** Changed in: linux (Ubuntu Groovy)
Assignee: (unassigned) => Thadeu Lima de Souza Cascardo (cascardo)
** Changed in: linux (Ubuntu Focal)
Assignee: (unassigned) => Thadeu Lima de Souza Cascardo (cascardo)
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You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1896504
Title:
tc/ebpf: unable to use BPF_FUNC_skb_change_head
Status in linux package in Ubuntu:
Incomplete
Status in linux source package in Focal:
Confirmed
Status in linux source package in Groovy:
Incomplete
Bug description:
[Impact]
tc ebpf program that uses BPF_FUNC_skb_change_head are rejected.
This helper exists since linux v4.10, but it cannot be used until the the
upstream commit 6f3f65d80dac ("net: bpf: Allow TC programs to call
BPF_FUNC_skb_change_head"):
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6f3f65d80dac
[Test Case]
Create a, ebpf program that uses this helper and load it with tc.
[Regression Potential]
The patch is trivial, the potential regressions are low.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1896504/+subscriptions
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[Kernel-packages] [Bug 1896504] Re: tc/ebpf: unable to use BPF_FUNC_skb_change_head
Here is an example:
root@ubuntu1804hwe:~# uname -a
Linux ubuntu1804hwe 5.4.0-47-generic #51~18.04.1-Ubuntu SMP Sat Sep 5 14:35:50
UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
root@ubuntu1804hwe:~# cat test.c
#include
#include
#ifndef __section
# define __section(NAME) __attribute__((section(NAME), used))
#endif
static int (*bpf_skb_change_head)(void *ctx, int headroom, int flags) =
(void *) BPF_FUNC_skb_change_head;
__section("test")
int _test(struct __sk_buff *skb)
{
bpf_skb_change_head(skb, 14, 0);
return TC_ACT_OK;
}
char _license[] __section("license") = "GPL";
root@ubuntu1804hwe:~# clang -target bpf -I/usr/include/x86_64-linux-gnu/ -O2 -o
test.o -c test.c
root@ubuntu1804hwe:~# ip link add name dummy1 type dummy
root@ubuntu1804hwe:~# ip link set dummy1 up
root@ubuntu1804hwe:~# tc qdisc add dev dummy1 clsact
root@ubuntu1804hwe:~# tc filter add dev dummy1 egress matchall action bpf obj
./test.o sec test
Prog section 'test' rejected: Invalid argument (22)!
- Type: 4
- Instructions: 5 (0 over limit)
- License: GPL
Verifier analysis:
0: (b7) r2 = 14
1: (b7) r3 = 0
2: (85) call bpf_skb_change_head#43
unknown func bpf_skb_change_head#43
processed 3 insns (limit 100) max_states_per_insn 0 total_states 0
peak_states 0 mark_read 0
Error fetching program/map!
bad action parsing
parse_action: bad value (5:bpf)!
Illegal "action"
root@ubuntu1804hwe:~#
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https://bugs.launchpad.net/bugs/1896504
Title:
tc/ebpf: unable to use BPF_FUNC_skb_change_head
Status in linux package in Ubuntu:
Incomplete
Bug description:
[Impact]
tc ebpf program that uses BPF_FUNC_skb_change_head are rejected.
This helper exists since linux v4.10, but it cannot be used until the the
upstream commit 6f3f65d80dac ("net: bpf: Allow TC programs to call
BPF_FUNC_skb_change_head"):
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6f3f65d80dac
[Test Case]
Create a, ebpf program that uses this helper and load it with tc.
[Regression Potential]
The patch is trivial, the potential regressions are low.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1896504/+subscriptions
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[Kernel-packages] [Bug 1896504] Re: tc/ebpf: unable to use BPF_FUNC_skb_change_head
With a newer kernel, the last command succeeds (not output):
root@ubuntu1804hwe:~# uname -a
Linux ubuntu1804hwe 5.9.0-rc3-ge1b81391421b+6wind-net #1 SMP Mon Sep 21
19:31:31 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
root@ubuntu1804hwe:~# tc filter add dev dummy1 egress matchall action bpf obj
./test.o sec test
root@ubuntu1804hwe:~#
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https://bugs.launchpad.net/bugs/1896504
Title:
tc/ebpf: unable to use BPF_FUNC_skb_change_head
Status in linux package in Ubuntu:
Incomplete
Bug description:
[Impact]
tc ebpf program that uses BPF_FUNC_skb_change_head are rejected.
This helper exists since linux v4.10, but it cannot be used until the the
upstream commit 6f3f65d80dac ("net: bpf: Allow TC programs to call
BPF_FUNC_skb_change_head"):
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6f3f65d80dac
[Test Case]
Create a, ebpf program that uses this helper and load it with tc.
[Regression Potential]
The patch is trivial, the potential regressions are low.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1896504/+subscriptions
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[Kernel-packages] [Bug 1896504] Re: tc/ebpf: unable to use BPF_FUNC_skb_change_head
I forget to explain how to check that the tc command was accepted:
root@ubuntu1804hwe:~# tc filter show dev dummy1 egress
filter protocol all pref 49152 matchall chain 0
filter protocol all pref 49152 matchall chain 0 handle 0x1
not_in_hw
action order 1: bpf test.o:[test] id 9 tag 26af4b090d2d67ee jited
default-action pipe
index 1 ref 1 bind 1
root@ubuntu1804hwe:~#
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Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1896504
Title:
tc/ebpf: unable to use BPF_FUNC_skb_change_head
Status in linux package in Ubuntu:
Incomplete
Bug description:
[Impact]
tc ebpf program that uses BPF_FUNC_skb_change_head are rejected.
This helper exists since linux v4.10, but it cannot be used until the the
upstream commit 6f3f65d80dac ("net: bpf: Allow TC programs to call
BPF_FUNC_skb_change_head"):
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6f3f65d80dac
[Test Case]
Create a, ebpf program that uses this helper and load it with tc.
[Regression Potential]
The patch is trivial, the potential regressions are low.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1896504/+subscriptions
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