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X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR11MB8479 X-OriginatorOrg: intel.com Hello, kernel test robot noticed "WARNING:at_kernel/time/timer_migration.c:#tmigr_connect_child_parent" on: commit: 8cdb61838ee5c63556773ea2eed24deab6b15257 ("timers/migration: Move hierarchy setup into cpuhotplug prepare callback") https://git.kernel.org/cgit/linux/kernel/git/tip/tip.git timers/urgent [test failed on linux-next/master 82d01fe6ee52086035b201cfa1410a3b04384257] in testcase: filebench version: filebench-x86_64-22620e6-1_20240224 with following parameters: disk: 1HDD fs: xfs test: randomwrite.f cpufreq_governor: performance compiler: gcc-13 test machine: 128 threads 2 sockets Intel(R) Xeon(R) Platinum 8358 CPU @ 2.60GHz (Ice Lake) with 128G memory (please refer to attached dmesg/kmsg for entire log/backtrace) 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/202407101636.d9d4e8be-oliver.sang@intel.com [ 16.306955][ T209] ------------[ cut here ]------------ [ 16.312287][ T209] WARNING: CPU: 32 PID: 209 at kernel/time/timer_migration.c:1620 tmigr_connect_child_parent (kernel/time/timer_migration.c:1620 (discriminator 7)) [ 16.323148][ T209] Modules linked in: [ 16.326901][ T209] CPU: 32 PID: 209 Comm: cpuhp/32 Not tainted 6.10.0-rc6-00002-g8cdb61838ee5 #1 [ 16.335766][ T209] RIP: 0010:tmigr_connect_child_parent (kernel/time/timer_migration.c:1620 (discriminator 7)) [ 16.341945][ T209] Code: c6 07 00 0f 1f 00 fb 66 90 0f b6 45 60 48 89 e2 48 89 ee 48 89 df 88 44 24 18 e8 ec fc ff ff 84 c0 75 09 48 83 7b 08 00 74 02 <0f> 0b 48 8b 44 24 20 65 48 2b 04 25 28 00 00 00 75 36 48 83 c4 28 All code ======== 0: c6 07 00 movb $0x0,(%rdi) 3: 0f 1f 00 nopl (%rax) 6: fb sti 7: 66 90 xchg %ax,%ax 9: 0f b6 45 60 movzbl 0x60(%rbp),%eax d: 48 89 e2 mov %rsp,%rdx 10: 48 89 ee mov %rbp,%rsi 13: 48 89 df mov %rbx,%rdi 16: 88 44 24 18 mov %al,0x18(%rsp) 1a: e8 ec fc ff ff callq 0xfffffffffffffd0b 1f: 84 c0 test %al,%al 21: 75 09 jne 0x2c 23: 48 83 7b 08 00 cmpq $0x0,0x8(%rbx) 28: 74 02 je 0x2c 2a:* 0f 0b ud2 <-- trapping instruction 2c: 48 8b 44 24 20 mov 0x20(%rsp),%rax 31: 65 48 2b 04 25 28 00 sub %gs:0x28,%rax 38: 00 00 3a: 75 36 jne 0x72 3c: 48 83 c4 28 add $0x28,%rsp Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 48 8b 44 24 20 mov 0x20(%rsp),%rax 7: 65 48 2b 04 25 28 00 sub %gs:0x28,%rax e: 00 00 10: 75 36 jne 0x48 12: 48 83 c4 28 add $0x28,%rsp [ 16.361382][ T209] RSP: 0000:ffa0000007587da0 EFLAGS: 00010286 [ 16.367302][ T209] RAX: 0000000000000000 RBX: ff11002000b56b00 RCX: 0000000000010101 [ 16.375130][ T209] RDX: 0000000000010101 RSI: ff11002000b56b00 RDI: ff11002000b56b50 [ 16.382955][ T209] RBP: ff11002000b57500 R08: 0000000000000101 R09: ffa0000007587da0 [ 16.390782][ T209] R10: 0000000000000001 R11: 00000000c5672a10 R12: 0000000000000001 [ 16.398608][ T209] R13: ff11001084311240 R14: 0000000000000020 R15: 0000000000000002 [ 16.406433][ T209] FS: 0000000000000000(0000) GS:ff11001fffe00000(0000) knlGS:0000000000000000 [ 16.415213][ T209] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 16.421650][ T209] CR2: 0000000000000000 CR3: 000000207de1c001 CR4: 0000000000771ef0 [ 16.429477][ T209] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 16.437301][ T209] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 16.445128][ T209] PKRU: 55555554 [ 16.448535][ T209] Call Trace: [ 16.451680][ T209] [ 16.454479][ T209] ? __warn (kernel/panic.c:693) [ 16.458405][ T209] ? tmigr_connect_child_parent (kernel/time/timer_migration.c:1620 (discriminator 7)) [ 16.463980][ T209] ? report_bug (lib/bug.c:180 lib/bug.c:219) [ 16.468338][ T209] ? handle_bug (arch/x86/kernel/traps.c:239) [ 16.472523][ T209] ? exc_invalid_op (arch/x86/kernel/traps.c:260 (discriminator 1)) [ 16.477055][ T209] ? asm_exc_invalid_op (arch/x86/include/asm/idtentry.h:621) [ 16.481936][ T209] ? tmigr_connect_child_parent (kernel/time/timer_migration.c:1620 (discriminator 7)) [ 16.487507][ T209] tmigr_setup_groups+0x1e6/0x430 [ 16.492993][ T209] ? __pfx_tmigr_cpu_prepare (kernel/time/timer_migration.c:1727) [ 16.498305][ T209] tmigr_cpu_prepare (kernel/time/timer_migration.c:1721 kernel/time/timer_migration.c:1737) [ 16.502927][ T209] cpuhp_invoke_callback (kernel/cpu.c:194) [ 16.507980][ T209] ? __pfx_smpboot_thread_fn (kernel/smpboot.c:107) [ 16.513291][ T209] cpuhp_thread_fun (kernel/cpu.c:1092 (discriminator 1)) [ 16.517910][ T209] smpboot_thread_fn (kernel/smpboot.c:164) [ 16.522615][ T209] kthread (kernel/kthread.c:389) [ 16.526367][ T209] ? __pfx_kthread (kernel/kthread.c:342) [ 16.530814][ T209] ret_from_fork (arch/x86/kernel/process.c:147) [ 16.535088][ T209] ? __pfx_kthread (kernel/kthread.c:342) [ 16.539533][ T209] ret_from_fork_asm (arch/x86/entry/entry_64.S:257) [ 16.544153][ T209] [ 16.547039][ T209] ---[ end trace 0000000000000000 ]--- [ 16.562459][ T1] Timer migration setup failed The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20240710/202407101636.d9d4e8be-oliver.sang@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki