On Fri, Oct 06, 2023 at 12:20:38PM -0400, Liam R. Howlett wrote: > * Naresh Kamboju <naresh.kamboju@xxxxxxxxxx> [231005 13:49]: > > On Wed, 4 Oct 2023 at 23:33, Greg Kroah-Hartman > > <gregkh@xxxxxxxxxxxxxxxxxxx> wrote: > > > > > > This is the start of the stable review cycle for the 5.15.134 release. > > > There are 183 patches in this series, all will be posted as a response > > > to this one. If anyone has any issues with these being applied, please > > > let me know. > > > > > > Responses should be made by Fri, 06 Oct 2023 17:51:12 +0000. > > > Anything received after that time might be too late. > > > > > > The whole patch series can be found in one patch at: > > > https://www.kernel.org/pub/linux/kernel/v5.x/stable-review/patch-5.15.134-rc1.gz > > > or in the git tree and branch at: > > > git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.15.y > > > and the diffstat can be found below. > > > > > > thanks, > > > > > > greg k-h > > > > Results from Linaro’s test farm. > > Regressions on x86. > > > > Following kernel warning noticed on x86 while booting stable-rc 5.15.134-rc1 > > with selftest merge config built kernel. > > > > Reported-by: Linux Kernel Functional Testing <lkft@xxxxxxxxxx> > > > > Anyone noticed this kernel warning ? > > > > This is always reproducible while booting x86 with a given config. > > >From that config: > # > # RCU Subsystem > # > CONFIG_TREE_RCU=y > # CONFIG_RCU_EXPERT is not set > CONFIG_SRCU=y > CONFIG_TREE_SRCU=y > CONFIG_TASKS_RCU_GENERIC=y > CONFIG_TASKS_RUDE_RCU=y > CONFIG_TASKS_TRACE_RCU=y > CONFIG_RCU_STALL_COMMON=y > CONFIG_RCU_NEED_SEGCBLIST=y > # end of RCU Subsystem > > # > # RCU Debugging > # > CONFIG_PROVE_RCU=y > # CONFIG_RCU_SCALE_TEST is not set > # CONFIG_RCU_TORTURE_TEST is not set > # CONFIG_RCU_REF_SCALE_TEST is not set > CONFIG_RCU_CPU_STALL_TIMEOUT=21 > CONFIG_RCU_TRACE=y > # CONFIG_RCU_EQS_DEBUG is not set > # end of RCU Debugging > > > > > > x86 boot log: > > ----- > > [ 0.000000] Linux version 5.15.134-rc1 (tuxmake@tuxmake) > > (x86_64-linux-gnu-gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils > > for Debian) 2.40) #1 SMP @1696443178 > > ... > > [ 1.480701] ------------[ cut here ]------------ > > [ 1.481296] WARNING: CPU: 0 PID: 13 at kernel/rcu/tasks.h:958 > > trc_inspect_reader+0x80/0xb0 > > [ 1.481296] Modules linked in: > > [ 1.481296] CPU: 0 PID: 13 Comm: rcu_tasks_trace Not tainted 5.15.134-rc1 #1 > > [ 1.481296] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS > > 2.5 11/26/2020 > > [ 1.481296] RIP: 0010:trc_inspect_reader+0x80/0xb0 > > This function has changed a lot, including the dropping of this > WARN_ON_ONCE(). The warning was replaced in 897ba84dc5aa ("rcu-tasks: > Handle idle tasks for recently offlined CPUs") with something that looks > equivalent so I'm not sure why it would not trigger in newer revisions. > > Obviously the behaviour I changed was the test for the task being idle. > I am not sure how best to short-circuit that test from happening during > boot as I am not familiar with the RCU code. The usual test for RCU's notion of early boot being completed is (rcu_scheduler_active != RCU_SCHEDULER_INIT). Except that "ofl" should always be false that early in boot, at least in mainline. > It's also worth noting that the bug this fixes wasn't exposed until the > maple tree (added in v6.1) was used for the IRQ descriptors (added in > v6.5). Lots of latent bugs, to be sure, even with rcutorture. :-/ Thanx, Paul > > [ 1.481296] Code: b6 83 45 04 00 00 84 c0 75 48 c6 83 45 04 00 00 > > 01 b8 01 00 00 00 5b 41 5c 5d c3 cc cc cc cc 0f 94 c0 eb b4 f6 43 2c > > 02 75 02 <0f> 0b 48 83 05 36 f8 ee 02 01 b8 01 00 00 00 48 83 05 21 f8 > > ee 02 > > [ 1.481296] RSP: 0000:ffffb25e000afd70 EFLAGS: 00010046 > > [ 1.481296] RAX: 0000000000000000 RBX: ffff9b40c080d040 RCX: 0000000000000003 > > [ 1.481296] RDX: ffff9b4427b80000 RSI: 0000000000000000 RDI: ffff9b40c080d040 > > [ 1.481296] RBP: ffffb25e000afd80 R08: e32db91cdfdc3bef R09: 00000000035b89d4 > > [ 1.481296] R10: 000000006a495065 R11: 0000000000000030 R12: ffffffffae692100 > > [ 1.481296] R13: 0000000000000000 R14: ffff9b40c080d9a8 R15: 0000000000000000 > > [ 1.481296] FS: 0000000000000000(0000) GS:ffff9b4427a00000(0000) > > knlGS:0000000000000000 > > [ 1.481296] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > > [ 1.481296] CR2: ffff9b4297201000 CR3: 00000002d5e26001 CR4: 00000000003706f0 > > [ 1.481296] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > > [ 1.481296] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > > [ 1.481296] Call Trace: > > [ 1.481296] <TASK> > > [ 1.481296] ? show_regs.cold+0x1a/0x1f > > [ 1.481296] ? __warn+0x88/0x120 > > [ 1.481296] ? trc_inspect_reader+0x80/0xb0 > > [ 1.481296] ? report_bug+0xa8/0xd0 > > [ 1.481296] ? handle_bug+0x40/0x70 > > [ 1.481296] ? exc_invalid_op+0x18/0x70 > > [ 1.481296] ? asm_exc_invalid_op+0x1b/0x20 > > [ 1.481296] ? rcu_tasks_kthread+0x250/0x250 > > [ 1.481296] ? trc_inspect_reader+0x80/0xb0 > > [ 1.481296] ? rcu_tasks_kthread+0x250/0x250 > > [ 1.481296] try_invoke_on_locked_down_task+0x109/0x120 > > [ 1.481296] trc_wait_for_one_reader.part.0+0x48/0x270 > > [ 1.481296] rcu_tasks_trace_postscan+0x76/0xb0 > > [ 1.481296] rcu_tasks_wait_gp+0x186/0x380 > > [ 1.481296] ? _raw_spin_unlock_irqrestore+0x35/0x50 > > [ 1.481296] rcu_tasks_kthread+0x145/0x250 > > [ 1.481296] ? do_wait_intr_irq+0xc0/0xc0 > > [ 1.481296] ? synchronize_rcu_tasks_rude+0x20/0x20 > > [ 1.481296] kthread+0x146/0x170 > > [ 1.481296] ? set_kthread_struct+0x50/0x50 > > [ 1.481296] ret_from_fork+0x1f/0x30 > > [ 1.481296] </TASK> > > [ 1.481296] irq event stamp: 132 > > [ 1.481296] hardirqs last enabled at (131): [<ffffffffaf7936a5>] > > _raw_spin_unlock_irqrestore+0x35/0x50 > > [ 1.481296] hardirqs last disabled at (132): [<ffffffffaf79345b>] > > _raw_spin_lock_irqsave+0x5b/0x60 > > [ 1.481296] softirqs last enabled at (54): [<ffffffffae69201c>] > > rcu_tasks_kthread+0x16c/0x250 > > [ 1.481296] softirqs last disabled at (50): [<ffffffffae69201c>] > > rcu_tasks_kthread+0x16c/0x250 > > [ 1.481296] ---[ end trace 5a00c61d8412a9ac ]--- > > > > > > Links: > > ---- > > - https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-5.15.y/build/v5.15.133-184-g6f28ecf24aef/testrun/20260259/suite/log-parser-boot/test/check-kernel-exception/log > > - https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-5.15.y/build/v5.15.133-184-g6f28ecf24aef/testrun/20260259/suite/log-parser-boot/tests/ > > Build: https://storage.tuxsuite.com/public/linaro/lkft/builds/2WJFhcfqqG69pqj6LWuI14kVoP5/ > > > > steps to reproduce: > > -------- > > - https://storage.tuxsuite.com/public/linaro/lkft/builds/2WJFhcfqqG69pqj6LWuI14kVoP5/tuxmake_reproducer.sh > > > > ## Build > > * kernel: 5.15.134-rc1 > > * git: https://gitlab.com/Linaro/lkft/mirrors/stable/linux-stable-rc > > * git branch: linux-5.15.y > > * git commit: 6f28ecf24aef2896f4071dc6268d3fb5f8259c77 > > * git describe: v5.15.133-184-g6f28ecf24aef > > * test details: > > https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-5.15.y/build/v5.15.133-184-g6f28ecf24aef > > > > ## Test Regressions (compared to v5.15.133) > > * x86, log-parser-boot > > - check-kernel-exception > > - check-kernel-warning > > > > * x86, log-parser-test > > - check-kernel-exception > > - check-kernel-warning > > > > > > ## Metric Regressions (compared to v5.15.133) > > > > ## Test Fixes (compared to v5.15.133) > > > > ## Metric Fixes (compared to v5.15.133) > > > > ## Test result summary > > total: 90392, pass: 71514, fail: 2557, skip: 16224, xfail: 97 > > > > ## Build Summary > > * arc: 4 total, 4 passed, 0 failed > > * arm: 114 total, 114 passed, 0 failed > > * arm64: 42 total, 42 passed, 0 failed > > * i386: 32 total, 31 passed, 1 failed > > * mips: 27 total, 26 passed, 1 failed > > * parisc: 4 total, 4 passed, 0 failed > > * powerpc: 26 total, 25 passed, 1 failed > > * riscv: 11 total, 11 passed, 0 failed > > * s390: 12 total, 11 passed, 1 failed > > * sh: 13 total, 11 passed, 2 failed > > * sparc: 8 total, 8 passed, 0 failed > > * x86_64: 38 total, 38 passed, 0 failed > > > > ## Test suites summary > > * boot > > * kselftest-android > > * kselftest-arm64 > > * kselftest-breakpoints > > * kselftest-capabilities > > * kselftest-cgroup > > * kselftest-clone3 > > * kselftest-core > > * kselftest-cpu-hotplug > > * kselftest-cpufreq > > * kselftest-drivers-dma-buf > > * kselftest-efivarfs > > * kselftest-exec > > * kselftest-filesystems > > * kselftest-filesystems-binderfs > > * kselftest-filesystems-epoll > > * kselftest-firmware > > * kselftest-fpu > > * kselftest-ftrace > > * kselftest-futex > > * kselftest-gpio > > * kselftest-intel_pstate > > * kselftest-ipc > > * kselftest-ir > > * kselftest-kcmp > > * kselftest-kexec > > * kselftest-kvm > > * kselftest-lib > > * kselftest-membarrier > > * kselftest-memfd > > * kselftest-memory-hotplug > > * kselftest-mincore > > * kselftest-mount > > * kselftest-mqueue > > * kselftest-net > > * kselftest-net-forwarding > > * kselftest-net-mptcp > > * kselftest-netfilter > > * kselftest-nsfs > > * kselftest-openat2 > > * kselftest-pid_namespace > > * kselftest-pidfd > > * kselftest-proc > > * kselftest-pstore > > * kselftest-ptrace > > * kselftest-rseq > > * kselftest-rtc > > * kselftest-seccomp > > * kselftest-sigaltstack > > * kselftest-size > > * kselftest-splice > > * kselftest-static_keys > > * kselftest-sync > > * kselftest-sysctl > > * kselftest-tc-testing > > * kselftest-timens > > * kselftest-tmpfs > > * kselftest-tpm2 > > * kselftest-user > > * kselftest-user_events > > * kselftest-vDSO > > * kselftest-vm > > * kselftest-watchdog > > * kselftest-x86 > > * kselftest-zram > > * kunit > > * kvm-unit-tests > > * libgpiod > > * log-parser-boot > > * log-parser-test > > * ltp-cap_bounds > > * ltp-commands > > * ltp-containers > > * ltp-controllers > > * ltp-cpuhotplug > > * ltp-crypto > > * ltp-cve > > * ltp-dio > > * ltp-fcntl-locktests > > * ltp-filecaps > > * ltp-fs > > * ltp-fs_bind > > * ltp-fs_perms_simple > > * ltp-fsx > > * ltp-hugetlb > > * ltp-io > > * ltp-ipc > > * ltp-math > > * ltp-mm > > * ltp-nptl > > * ltp-pty > > * ltp-sched > > * ltp-securebits > > * ltp-smoke > > * ltp-syscalls > > * ltp-tracing > > * network-basic-tests > > * perf > > * rcutorture > > * v4l2-compliance > > > > -- > > Linaro LKFT > > https://lkft.linaro.org
