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6Cj+wU/bvQFbbx/QJOggHqZv40w6+5CilPprT0889W0fRB3LM/1DXk7Xj228+ZrCbR+jkpAC+mVH+OuZRGxcXQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA1PR11MB6267 X-OriginatorOrg: intel.com Hello, kernel test robot noticed "WARNING:at_kernel/sched/sched.h:#update_rq_clock" on: commit: 8250cf6004de715b0abbbd5bf837d5ac869f1641 ("[PATCH 1/1] sched/fair: Update blocked averages on tick") url: https://github.com/intel-lab-lkp/linux/commits/Pierre-Gondois/sched-fair-Update-blocked-averages-on-tick/20241011-203402 base: https://git.kernel.org/cgit/linux/kernel/git/tip/tip.git 7266f0a6d3bb73f42ea06656d3cc48c7d0386f71 patch link: https://lore.kernel.org/all/20241011123222.1282936-2-pierre.gondois@arm.com/ patch subject: [PATCH 1/1] sched/fair: Update blocked averages on tick in testcase: boot config: x86_64-randconfig-006-20241013 compiler: clang-18 test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G (please refer to attached dmesg/kmsg for entire log/backtrace) +-------------------------------------------------------------+------------+------------+ | | 7266f0a6d3 | 8250cf6004 | +-------------------------------------------------------------+------------+------------+ | boot_successes | 18 | 0 | | boot_failures | 0 | 21 | | WARNING:at_kernel/sched/sched.h:#update_rq_clock | 0 | 21 | | RIP:update_rq_clock | 0 | 21 | | RIP:default_idle | 0 | 21 | | WARNING:at_kernel/sched/sched.h:#_update_idle_rq_clock_pelt | 0 | 21 | | RIP:_update_idle_rq_clock_pelt | 0 | 21 | | WARNING:at_kernel/sched/sched.h:#update_other_load_avgs | 0 | 21 | | RIP:update_other_load_avgs | 0 | 21 | | WARNING:at_kernel/sched/sched.h:#update_blocked_averages | 0 | 21 | | RIP:update_blocked_averages | 0 | 21 | +-------------------------------------------------------------+------------+------------+ 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/202410141238.aa194a45-lkp@intel.com [ 2.078083][ C1] ------------[ cut here ]------------ [ 2.079049][ C1] WARNING: CPU: 1 PID: 0 at kernel/sched/sched.h:1496 update_rq_clock (kernel/sched/sched.h:1496) [ 2.080428][ C1] Modules linked in: [ 2.081070][ C1] CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted 6.12.0-rc2-00014-g8250cf6004de #1 dfe5ae60b9ab8d21e49756916bb824f564f72e7b [ 2.081391][ C1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 [ 2.081391][ C1] RIP: 0010:update_rq_clock (kernel/sched/sched.h:1496) [ 2.081391][ C1] Code: 00 00 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 c7 38 41 00 4c 01 3b 48 83 c4 18 5b 41 5c 41 5d 41 5e 41 5f 5d c3 <0f> 0b e9 52 fd ff ff 48 89 df e8 fe 38 01 00 eb e0 48 c7 c1 3c 21 All code ======== 0: 00 00 add %al,(%rax) 2: 48 89 d8 mov %rbx,%rax 5: 48 c1 e8 03 shr $0x3,%rax 9: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) e: 74 08 je 0x18 10: 48 89 df mov %rbx,%rdi 13: e8 c7 38 41 00 call 0x4138df 18: 4c 01 3b add %r15,(%rbx) 1b: 48 83 c4 18 add $0x18,%rsp 1f: 5b pop %rbx 20: 41 5c pop %r12 22: 41 5d pop %r13 24: 41 5e pop %r14 26: 41 5f pop %r15 28: 5d pop %rbp 29: c3 ret 2a:* 0f 0b ud2 <-- trapping instruction 2c: e9 52 fd ff ff jmp 0xfffffffffffffd83 31: 48 89 df mov %rbx,%rdi 34: e8 fe 38 01 00 call 0x13937 39: eb e0 jmp 0x1b 3b: 48 rex.W 3c: c7 .byte 0xc7 3d: c1 .byte 0xc1 3e: 3c 21 cmp $0x21,%al Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: e9 52 fd ff ff jmp 0xfffffffffffffd59 7: 48 89 df mov %rbx,%rdi a: e8 fe 38 01 00 call 0x1390d f: eb e0 jmp 0xfffffffffffffff1 11: 48 rex.W 12: c7 .byte 0xc7 13: c1 .byte 0xc1 14: 3c 21 cmp $0x21,%al [ 2.081391][ C1] RSP: 0000:ffffc900001e8df0 EFLAGS: 00010046 [ 2.081391][ C1] RAX: 0000000000000000 RBX: ffff8883aeb396c0 RCX: dffffc0000000000 [ 2.081391][ C1] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffff8883aeb396d8 [ 2.081391][ C1] RBP: ffffc900001e8e30 R08: ffffffffb6af076f R09: 1ffffffff6d5e0ed [ 2.081391][ C1] R10: dffffc0000000000 R11: fffffbfff6d5e0ee R12: dffffc0000000000 [ 2.081391][ C1] R13: dffffc0000000000 R14: ffff8883aeb3a158 R15: ffff8883aeb3a088 [ 2.081391][ C1] FS: 0000000000000000(0000) GS:ffff8883aeb00000(0000) knlGS:0000000000000000 [ 2.081391][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.081391][ C1] CR2: 0000000000000000 CR3: 0000000182a4c000 CR4: 00000000000406f0 [ 2.081391][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 2.081391][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 2.081391][ C1] Call Trace: [ 2.081391][ C1] [ 2.081391][ C1] ? show_regs (arch/x86/kernel/dumpstack.c:479) [ 2.081391][ C1] ? __warn (kernel/panic.c:748) [ 2.081391][ C1] ? update_rq_clock (kernel/sched/sched.h:1496) [ 2.081391][ C1] ? report_bug (lib/bug.c:?) [ 2.081391][ C1] ? update_rq_clock (kernel/sched/sched.h:1496) [ 2.081391][ C1] ? handle_bug (arch/x86/kernel/traps.c:285) [ 2.081391][ C1] ? exc_invalid_op (arch/x86/kernel/traps.c:309) [ 2.081391][ C1] ? asm_exc_invalid_op (arch/x86/include/asm/idtentry.h:621) [ 2.081391][ C1] ? update_rq_clock (kernel/sched/sched.h:1496) [ 2.081391][ C1] update_blocked_averages (kernel/sched/fair.c:9720 kernel/sched/fair.c:9845) [ 2.081391][ C1] sched_balance_trigger (kernel/sched/fair.c:12887) [ 2.081391][ C1] sched_tick (kernel/sched/core.c:5617) [ 2.081391][ C1] update_process_times (kernel/time/timer.c:2526) [ 2.081391][ C1] tick_periodic (kernel/time/tick-common.c:102) [ 2.081391][ C1] tick_handle_periodic (kernel/time/tick-common.c:120) [ 2.081391][ C1] __sysvec_apic_timer_interrupt (arch/x86/include/asm/jump_label.h:27 include/linux/jump_label.h:207 arch/x86/include/asm/trace/irq_vectors.h:41 arch/x86/kernel/apic/apic.c:1044) [ 2.081391][ C1] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1037) [ 2.081391][ C1] [ 2.081391][ C1] [ 2.081391][ C1] asm_sysvec_apic_timer_interrupt (arch/x86/include/asm/idtentry.h:702) [ 2.081391][ C1] RIP: 0010:default_idle (arch/x86/include/asm/irqflags.h:37 arch/x86/include/asm/irqflags.h:92 arch/x86/kernel/process.c:743) [ 2.081391][ C1] Code: 00 4d 29 c8 4c 01 c7 4c 29 c2 e9 72 ff ff ff cc cc cc cc 90 90 90 b8 0c 67 40 a5 eb 07 0f 00 2d 9f 89 47 00 55 48 89 e5 fb f4 5d c3 66 0f 1f 44 00 00 90 90 90 b8 0c 67 40 a5 55 48 89 e5 e8 All code ======== 0: 00 4d 29 add %cl,0x29(%rbp) 3: c8 4c 01 c7 enter $0x14c,$0xc7 7: 4c 29 c2 sub %r8,%rdx a: e9 72 ff ff ff jmp 0xffffffffffffff81 f: cc int3 10: cc int3 11: cc int3 12: cc int3 13: 90 nop 14: 90 nop 15: 90 nop 16: b8 0c 67 40 a5 mov $0xa540670c,%eax 1b: eb 07 jmp 0x24 1d: 0f 00 2d 9f 89 47 00 verw 0x47899f(%rip) # 0x4789c3 24: 55 push %rbp 25: 48 89 e5 mov %rsp,%rbp 28: fb sti 29: f4 hlt 2a:* fa cli <-- trapping instruction 2b: 5d pop %rbp 2c: c3 ret 2d: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1) 33: 90 nop 34: 90 nop 35: 90 nop 36: b8 0c 67 40 a5 mov $0xa540670c,%eax 3b: 55 push %rbp 3c: 48 89 e5 mov %rsp,%rbp 3f: e8 .byte 0xe8 Code starting with the faulting instruction =========================================== 0: fa cli 1: 5d pop %rbp 2: c3 ret 3: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1) 9: 90 nop a: 90 nop b: 90 nop c: b8 0c 67 40 a5 mov $0xa540670c,%eax 11: 55 push %rbp 12: 48 89 e5 mov %rsp,%rbp 15: e8 .byte 0xe8 The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20241014/202410141238.aa194a45-lkp@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki