[ciqlts9_2] Multiple patches tested (5 commits)

[github-actions]

Summary

This PR has been automatically created after successful completion of all CI stages.

Commit Message(s)

### net: sched: sfb: fix null pointer access issue when sfb_init() fails

jira VULN-155243
cve CVE-2022-50356
commit-author Zhengchao Shao <[email protected]>
commit 2a3fc78210b9f0e85372a2435368962009f480fc

When the default qdisc is sfb, if the qdisc of dev_queue fails to be
inited during mqprio_init(), sfb_reset() is invoked to clear resources.
In this case, the q->qdisc is NULL, and it will cause gpf issue.

The process is as follows:
qdisc_create_dflt()
	sfb_init()
		tcf_block_get()          --->failed, q->qdisc is NULL
	...
	qdisc_put()
		...
		sfb_reset()
			qdisc_reset(q->qdisc)    --->q->qdisc is NULL
				ops = qdisc->ops

The following is the Call Trace information:
general protection fault, probably for non-canonical address
0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f]
RIP: 0010:qdisc_reset+0x2b/0x6f0
Call Trace:
<TASK>
sfb_reset+0x37/0xd0
qdisc_reset+0xed/0x6f0
qdisc_destroy+0x82/0x4c0
qdisc_put+0x9e/0xb0
qdisc_create_dflt+0x2c3/0x4a0
mqprio_init+0xa71/0x1760
qdisc_create+0x3eb/0x1000
tc_modify_qdisc+0x408/0x1720
rtnetlink_rcv_msg+0x38e/0xac0
netlink_rcv_skb+0x12d/0x3a0
netlink_unicast+0x4a2/0x740
netlink_sendmsg+0x826/0xcc0
sock_sendmsg+0xc5/0x100
____sys_sendmsg+0x583/0x690
___sys_sendmsg+0xe8/0x160
__sys_sendmsg+0xbf/0x160
do_syscall_64+0x35/0x80
entry_SYSCALL_64_after_hwframe+0x46/0xb0
RIP: 0033:0x7f2164122d04
</TASK>

Fixes: e13e02a3c68d ("net_sched: SFB flow scheduler")
	Signed-off-by: Zhengchao Shao <[email protected]>
	Signed-off-by: David S. Miller <[email protected]>
(cherry picked from commit 2a3fc78210b9f0e85372a2435368962009f480fc)
	Signed-off-by: Roxana Nicolescu <[email protected]>

---
### net: sched: delete duplicate cleanup of backlog and qlen

jira VULN-155243
cve-pre CVE-2022-50356
commit-author Zhengchao Shao <[email protected]>
commit c19d893fbf3f2f8fa864ae39652c7fee939edde2

qdisc_reset() is clearing qdisc->q.qlen and qdisc->qstats.backlog
_after_ calling qdisc->ops->reset. There is no need to clear them
again in the specific reset function.

	Signed-off-by: Zhengchao Shao <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
	Signed-off-by: Paolo Abeni <[email protected]>
(cherry picked from commit c19d893fbf3f2f8fa864ae39652c7fee939edde2)
	Signed-off-by: Roxana Nicolescu <[email protected]>

---
### Add .container_build_image and remove -c flag from workflow

- Created .container_build_image with lts-9.2-kernel-builder
- Updated workflow to remove -c option from build_kernel.sh call
- Build script will now automatically use the image specified in .container_build_image

Signed-off-by: Shreeya Patel <[email protected]>

---
### Add PR body generation script

Script to generate detailed PR descriptions with kselftest results.

Signed-off-by: Shreeya Patel <[email protected]>

---
### Add automated kernel CI workflow with kselftest and PR creation

Implements a 5-stage GitHub Actions pipeline for automated kernel testing and PR creation.
Uses kernel-container-build automated-testing-v1 branch for build/test tooling.

Stage 1: Build (15-30 min)
- Checkout kernel source + kernel-container-build repo (automated-testing-v1)
- Build kernel in CIQ builder container with kABI checking
- Convert built container to QCOW2 VM image
- Upload: kernel-build.log, QCOW2 image

Stage 2: Boot Verification (2-5 min)
- Download QCOW2 image
- Boot kernel in QEMU (KVM or TCG) and validate login prompt appears
- Upload: boot logs

Stage 3: Kernel Selftests (40-60 min)
- Download QCOW2 image
- Execute comprehensive kselftests in QEMU with dual serial consoles
- Upload: kselftest TAP logs, dmesg output

Stage 4: Compare Results (1-2 min)
Purpose: Detect test regressions by comparing against base branch

Steps:
1. Checkout with full history (fetch-depth: 0) for git merge-base ops
2. Download current kselftest logs
3. Smart base branch detection:
   - For PRs: Uses PR's target branch
   - For pushes: Sorts branches by commit date, checks 30 most recent,
     finds closest common ancestor via git merge-base
   - For force-pushes: Doesn't do the detection again, instead uses the
     same base branch as detected during the first PR creation and also
     compares the result against that base branch only
   - Outputs: base_branch (reused by PR stage)
4. Download baseline logs from base branch (searches last 5 successful runs)
5. Compare results:
   - Counts passing/failing tests (before/after)
   - Fails if >±3 tests changed
   - Outputs: comparison_status, comparison_message

Stage 5: Create Pull Request (1-2 min)
Purpose: Auto-create/update PR after all tests pass

Prerequisites: Only runs if build + boot + kselftest passed, no regressions detected

Steps:
1. Check all stages passed and comparison_status != failed
2. Checkout (shallow: fetch-depth: 50) for commit messages
3. Download all artifacts (build/boot/test logs)
4. Extract statistics (pass/fail counts, build times)
5. Get commit info:
   - Single commit: Use commit message
   - Multiple commits: Create summary
6. Create/Update PR:
   - Reuses base_branch from compare-results (no duplication!)
   - Generate PR body with test results via create-pr-body.sh
   - Creates new PR or updates existing one in case of force pushes

Note :-
To skip this github action workflow, add [ci skip] or [skip ci]
into the head commit when pushing the patches.

Signed-off-by: Shreeya Patel <[email protected]>

---

Test Results

✅ Build Stage

• Status: Passed
• Build Time: 23m 46s
• Total Time: 25m 36s
• View build logs

✅ Boot Verification

• Status: Passed
• View boot logs

✅ Kernel Selftests

• Passed: 136
• Failed: 25
• View kselftest logs

⚠️ Test Comparison

• Status: Skipped
• Reason: No baseline test results available from ciqlts9_2
• Note: Manual review recommended to ensure no regressions

---

🤖 This PR was automatically generated by GitHub Actions
Run ID: 19497212379