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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hello, the config for this test is a randconfig. by this commit, the config has below diff between parent and this commit. --- /pkg/linux/i386-randconfig-r022-20221003/gcc-13/d65635ebba92ee02e8284acfabbaf6b59ec0b5b6/.config 2024-06-23 23:24:45.203220229 +0800 +++ /pkg/linux/i386-randconfig-r022-20221003/gcc-13/7a1fcbb52e611c49331bd66dd2da1efa4c0afef7/.config 2024-06-23 23:59:34.976722738 +0800 @@ -133,7 +133,7 @@ CONFIG_IRQ_TIME_ACCOUNTING=y CONFIG_TREE_RCU=y CONFIG_PREEMPT_RCU=y CONFIG_RCU_EXPERT=y -CONFIG_TREE_SRCU=y +CONFIG_TINY_SRCU=y CONFIG_TASKS_RCU_GENERIC=y CONFIG_FORCE_TASKS_RCU=y CONFIG_NEED_TASKS_RCU=y we don't have enough knowledge how this diff impacts rcutorture test results, just FYI what we observed in our tests. kernel test robot noticed "WARNING:at_kernel/rcu/rcutorture.c:#rcu_torture_stats_print[rcutorture]" on: commit: 7a1fcbb52e611c49331bd66dd2da1efa4c0afef7 ("rcutorture: Add SRCU-V scenario for preemptible Tiny SRCU") https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master [test failed on linux-next/master f76698bd9a8ca01d3581236082d786e9a6b72bb7] in testcase: rcutorture version: with following parameters: runtime: 300s test: default torture_type: busted_srcud compiler: gcc-13 test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G (please refer to attached dmesg/kmsg for entire log/backtrace) +-------------------------------------------------------------------------+------------+------------+ | | d65635ebba | 7a1fcbb52e | +-------------------------------------------------------------------------+------------+------------+ | WARNING:suspicious_RCU_usage | 6 | 6 | | kernel/rcu/rcutorture.c:#suspicious_rcu_dereference_check()usage | 6 | 6 | | WARNING:at_kernel/rcu/rcutorture.c:#rcu_torture_stats_print[rcutorture] | 0 | 6 | | EIP:rcu_torture_stats_print | 0 | 6 | +-------------------------------------------------------------------------+------------+------------+ If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-lkp/202406241652.e44865a0-lkp@intel.com The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20240624/202406241652.e44865a0-lkp@intel.com [ 96.952168][ T436] busted_srcud-torture: !!! [ 96.952253][ T436] ------------[ cut here ]------------ [ 96.954867][ T436] WARNING: CPU: 0 PID: 436 at kernel/rcu/rcutorture.c:2268 rcu_torture_stats_print+0x253/0x496 [rcutorture] [ 96.956537][ T436] Modules linked in: rcutorture torture ppdev i6300esb rapl ipmi_devintf parport_pc bochs drm_vram_helper parport drm_ttm_helper ttm drm_kms_helper i2c_piix4 tiny_power_button ata_generic button fuse drm drm_panel_orientation_quirks i2c_core configfs [ 96.959483][ T436] CPU: 0 PID: 436 Comm: rcu_torture_sta Not tainted 6.10.0-rc1-00067-g7a1fcbb52e61 #1 [ 96.960380][ T436] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 [ 96.961355][ T436] EIP: rcu_torture_stats_print+0x253/0x496 [rcutorture] [ 96.962139][ T436] Code: 85 c0 74 02 0f 0b 83 3d e4 17 59 ef 00 74 02 0f 0b 83 3d e0 17 59 ef 00 74 02 0f 0b 83 3d dc 17 59 ef 00 74 02 0f 0b 4b 7e 02 <0f> 0b 68 31 76 59 ef 31 db e8 40 11 54 de 5f 83 fb 0b 72 0c 89 da [ 96.963988][ T436] EAX: 00000000 EBX: 00000003 ECX: ef597627 EDX: ef59762c [ 96.964651][ T436] ESI: ef591994 EDI: 0000453c EBP: c6567f6c ESP: c6567eec [ 96.965187][ T436] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 EFLAGS: 00010206 [ 96.965660][ T436] CR0: 80050033 CR2: b6b5f000 CR3: 04f71000 CR4: 00040690 [ 96.966172][ T436] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 [ 96.966624][ T436] DR6: fffe0ff0 DR7: 00000400 [ 96.966924][ T436] Call Trace: [ 96.967138][ T436] ? show_regs+0x45/0x4b [ 96.967415][ T436] ? rcu_torture_stats_print+0x253/0x496 [rcutorture] [ 96.967849][ T436] ? __warn+0x7c/0x113 [ 96.968117][ T436] ? report_bug+0xb3/0x111 [ 96.968406][ T436] ? rcu_torture_stats_print+0x253/0x496 [rcutorture] [ 96.968880][ T436] ? exc_overflow+0x37/0x37 [ 96.969174][ T436] ? handle_bug+0x2b/0x47 [ 96.969452][ T436] ? exc_invalid_op+0x17/0x53 [ 96.969755][ T436] ? handle_exception+0x100/0x100 [ 96.970141][ T436] ? exc_overflow+0x37/0x37 [ 96.970434][ T436] ? rcu_torture_stats_print+0x253/0x496 [rcutorture] [ 96.970871][ T436] ? exc_overflow+0x37/0x37 [ 96.971162][ T436] ? rcu_torture_stats_print+0x253/0x496 [rcutorture] [ 96.971599][ T436] ? __timer_delete_sync+0x82/0x92 [ 96.971938][ T436] rcu_torture_stats+0x3d/0x5e [rcutorture] [ 96.972322][ T436] kthread+0xdc/0xe1 [ 96.972575][ T436] ? rcu_torture_stats_print+0x496/0x496 [rcutorture] [ 96.973010][ T436] ? kthread_park+0x62/0x62 [ 96.973302][ T436] ret_from_fork+0x1c/0x2f [ 96.973589][ T436] ? kthread_park+0x62/0x62 [ 96.973879][ T436] ret_from_fork_asm+0x12/0x18 [ 96.974230][ T436] entry_INT80_32+0xef/0xef [ 96.974519][ T436] irq event stamp: 535 [ 96.974777][ T436] hardirqs last enabled at (543): [] console_unlock+0x80/0xd4 [ 96.975183][ T436] hardirqs last disabled at (550): [] console_unlock+0x63/0xd4 [ 96.975588][ T436] softirqs last enabled at (104): [] handle_softirqs+0x2cf/0x2f9 [ 96.976007][ T436] softirqs last disabled at (97): [] __do_softirq+0xa/0xc [ 96.976392][ T436] ---[ end trace 0000000000000000 ]--- [ 96.999461][ T436] Reader Pipe: 1738294 6779 1992 57 1 0 0 0 0 0 0 [ 96.999803][ T436] busted_srcud-torture: Reader Batch: 1747123 0 0 0 0 0 0 0 0 0 0 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki