kernel/tools/testing/selftests/tc-testing/tc-tests/qdiscs, branch linux-6.2.y

net/sched: sch_fq: fix integer overflow of "credit"

2023-05-11T14:11:19Z

[ Upstream commit 7041101ff6c3073fd8f2e99920f535b111c929cb ] if sch_fq is configured with "initial quantum" having values greater than INT_MAX, the first assignment of "credit" does signed integer overflow to a very negative value. In this situation, the syzkaller script provided by Cristoph triggers the CPU soft-lockup warning even with few sockets. It's not an infinite loop, but "credit" wasn't probably meant to be minus 2Gb for each new flow. Capping "initial quantum" to INT_MAX proved to fix the issue. v2: validation of "initial quantum" is done in fq_policy, instead of open coding in fq_change() _ suggested by Jakub Kicinski Reported-by: Christoph Paasch Link: https://github.com/multipath-tcp/mptcp_net-next/issues/377 Fixes: afe4fd062416 ("pkt_sched: fq: Fair Queue packet scheduler") Reviewed-by: Eric Dumazet Signed-off-by: Davide Caratti Link: https://lore.kernel.org/r/7b3a3c7e36d03068707a021760a194a8eb5ad41a.1682002300.git.dcaratti@redhat.com Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin

selftests/tc-testing: add selftests for teql qdisc

2022-09-28T07:32:55Z

Test 84a0: Create TEQL with default setting Test 7734: Create TEQL with multiple device Test 34a9: Delete TEQL with valid handle Test 6289: Show TEQL stats Signed-off-by: Zhengchao Shao Signed-off-by: David S. Miller

selftests/tc-testing: add selftests for tbf qdisc

2022-09-28T07:32:55Z

Test 6430: Create TBF with default setting Test 0518: Create TBF with mtu setting Test 320a: Create TBF with peakrate setting Test 239b: Create TBF with latency setting Test c975: Create TBF with overhead setting Test 948c: Create TBF with linklayer setting Test 3549: Replace TBF with mtu Test f948: Change TBF with latency time Test 2348: Show TBF class Signed-off-by: Zhengchao Shao Signed-off-by: David S. Miller

selftests/tc-testing: add selftests for taprio qdisc

2022-09-28T07:32:55Z

Test ba39: Add taprio Qdisc to multi-queue device (8 queues) Test 9462: Add taprio Qdisc with multiple sched-entry Test 8d92: Add taprio Qdisc with txtime-delay Test d092: Delete taprio Qdisc with valid handle Test 8471: Show taprio class Test 0a85: Add taprio Qdisc to single-queue device Signed-off-by: Zhengchao Shao Signed-off-by: David S. Miller

selftests/tc-testing: add selftests for skbprio qdisc

2022-09-28T07:32:55Z

Test 283e: Create skbprio with default setting Test c086: Create skbprio with limit setting Test 6733: Change skbprio with limit setting Test 2958: Show skbprio class Signed-off-by: Zhengchao Shao Signed-off-by: David S. Miller

selftests/tc-testing: add selftests for sfq qdisc

2022-09-28T07:32:55Z

Test 7482: Create SFQ with default setting Test c186: Create SFQ with limit setting Test ae23: Create SFQ with perturb setting Test a430: Create SFQ with quantum setting Test 4539: Create SFQ with divisor setting Test b089: Create SFQ with flows setting Test 99a0: Create SFQ with depth setting Test 7389: Create SFQ with headdrop setting Test 6472: Create SFQ with redflowlimit setting Test 8929: Show SFQ class Signed-off-by: Zhengchao Shao Signed-off-by: David S. Miller

selftests/tc-testing: add selftests for sfb qdisc

2022-09-28T07:32:55Z

Test 3294: Create SFB with default setting Test 430a: Create SFB with rehash setting Test 3410: Create SFB with db setting Test 49a0: Create SFB with limit setting Test 1241: Create SFB with max setting Test 3249: Create SFB with target setting Test 30a9: Create SFB with increment setting Test 239a: Create SFB with decrement setting Test 9301: Create SFB with penalty_rate setting Test 2a01: Create SFB with penalty_burst setting Test 3209: Change SFB with rehash setting Test 5447: Show SFB class Signed-off-by: Zhengchao Shao Signed-off-by: David S. Miller

selftests/tc-testing: add selftests for plug qdisc

2022-09-28T07:32:54Z

Test 3289: Create PLUG with default setting Test 0917: Create PLUG with block setting Test 483b: Create PLUG with release setting Test 4995: Create PLUG with release_indefinite setting Test 389c: Create PLUG with limit setting Test 384a: Delete PLUG with valid handle Test 439a: Replace PLUG with limit setting Test 9831: Change PLUG with limit setting Signed-off-by: Zhengchao Shao Signed-off-by: David S. Miller

selftests/tc-testing: add selftests for pfifo_fast qdisc

2022-09-28T07:32:54Z

Test 900c: Create pfifo_fast with default setting Test 7470: Dump pfifo_fast stats Test b974: Replace pfifo_fast with different handle Test 3240: Delete pfifo_fast with valid handle Test 4385: Delete pfifo_fast with invalid handle Signed-off-by: Zhengchao Shao Signed-off-by: David S. Miller

selftests/tc-testing: add selftests for hhf qdisc

2022-09-28T07:32:54Z

Test 4812: Create HHF with default setting Test 8a92: Create HHF with limit setting Test 3491: Create HHF with quantum setting Test ba04: Create HHF with reset_timeout setting Test 4238: Create HHF with admit_bytes setting Test 839f: Create HHF with evict_timeout setting Test a044: Create HHF with non_hh_weight setting Test 32f9: Change HHF with limit setting Test 385e: Show HHF class Signed-off-by: Zhengchao Shao Signed-off-by: David S. Miller