From: kernel test robot <oliver.sang@intel.com>
To: Vlastimil Babka <vbabka@suse.cz>
Cc: <oe-lkp@lists.linux.dev>, <lkp@intel.com>, <linux-mm@kvack.org>,
<oliver.sang@intel.com>
Subject: [vbabka:b4/sheaves-for-all] [slab] de840681a1: BUG:using_smp_processor_id()in_preemptible
Date: Thu, 16 Oct 2025 14:08:26 +0800 [thread overview]
Message-ID: <202510161416.b7adda58-lkp@intel.com> (raw)
Hello,
kernel test robot noticed "BUG:using_smp_processor_id()in_preemptible" on:
commit: de840681a162e0a5a0862e7a0b495fb34deab7ef ("slab: remove cpu (partial) slabs usage from allocation paths")
https://git.kernel.org/cgit/linux/kernel/git/vbabka/linux.git b4/sheaves-for-all
in testcase: boot
config: i386-randconfig-002-20251015
compiler: gcc-14
test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G
(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 <oliver.sang@intel.com>
| Closes: https://lore.kernel.org/oe-lkp/202510161416.b7adda58-lkp@intel.com
[ 2.688724][ T2] BUG: using smp_processor_id() in preemptible [00000000] code: kthreadd/2
[ 2.690336][ T2] caller is debug_smp_processor_id (lib/smp_processor_id.c:59)
[ 2.692339][ T2] CPU: 0 UID: 0 PID: 2 Comm: kthreadd Tainted: G T 6.18.0-rc1-00012-gde840681a162 #1 PREEMPT(full)
[ 2.693316][ T2] Tainted: [T]=RANDSTRUCT
[ 2.693316][ T2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 2.693316][ T2] Call Trace:
[ 2.693316][ T2] dump_stack_lvl (lib/dump_stack.c:122)
[ 2.693316][ T2] dump_stack (lib/dump_stack.c:130)
[ 2.693316][ T2] check_preemption_disabled+0x98/0xa8
[ 2.693316][ T2] debug_smp_processor_id (lib/smp_processor_id.c:59)
[ 2.693316][ T2] set_track_update (mm/slub.c:1035 (discriminator 1))
[ 2.693316][ T2] ___slab_alloc (mm/slub.c:1046 mm/slub.c:4511)
[ 2.693316][ T2] ? copy_process (kernel/fork.c:184 (discriminator 2) kernel/fork.c:873 (discriminator 2) kernel/fork.c:2012 (discriminator 2))
[ 2.693316][ T2] kmem_cache_alloc_node_noprof (mm/slub.c:4544 mm/slub.c:4929 mm/slub.c:4993)
[ 2.693316][ T2] ? copy_process (kernel/fork.c:184 (discriminator 2) kernel/fork.c:873 (discriminator 2) kernel/fork.c:2012 (discriminator 2))
[ 2.693316][ T2] copy_process (kernel/fork.c:184 (discriminator 2) kernel/fork.c:873 (discriminator 2) kernel/fork.c:2012 (discriminator 2))
[ 2.693316][ T2] kernel_clone (include/linux/random.h:26 kernel/fork.c:2610)
[ 2.693316][ T2] ? kthread_is_per_cpu (kernel/kthread.c:412)
[ 2.693316][ T2] kernel_thread (kernel/fork.c:2671)
[ 2.693316][ T2] ? kthread_is_per_cpu (kernel/kthread.c:412)
[ 2.693316][ T2] kthreadd (kernel/kthread.c:486 kernel/kthread.c:846)
[ 2.693316][ T2] ? kthreads_online_cpu (kernel/kthread.c:818)
[ 2.693316][ T2] ret_from_fork (arch/x86/kernel/process.c:164)
[ 2.693316][ T2] ? kthreads_online_cpu (kernel/kthread.c:818)
[ 2.693316][ T2] ret_from_fork_asm (arch/x86/entry/entry_32.S:737)
[ 2.693316][ T2] entry_INT80_32 (arch/x86/entry/entry_32.S:942)
[ 2.693386][ T2] BUG: using smp_processor_id() in preemptible [00000000] code: kthreadd/2
[ 2.695335][ T2] caller is debug_smp_processor_id (lib/smp_processor_id.c:59)
[ 2.697340][ T2] CPU: 0 UID: 0 PID: 2 Comm: kthreadd Tainted: G T 6.18.0-rc1-00012-gde840681a162 #1 PREEMPT(full)
[ 2.698316][ T2] Tainted: [T]=RANDSTRUCT
[ 2.698316][ T2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 2.698316][ T2] Call Trace:
[ 2.698316][ T2] dump_stack_lvl (lib/dump_stack.c:122)
[ 2.698316][ T2] dump_stack (lib/dump_stack.c:130)
[ 2.698316][ T2] check_preemption_disabled+0x98/0xa8
[ 2.698316][ T2] debug_smp_processor_id (lib/smp_processor_id.c:59)
[ 2.698316][ T2] set_track_update (mm/slub.c:1035 (discriminator 1))
[ 2.698316][ T2] ___slab_alloc (mm/slub.c:1046 mm/slub.c:4511)
[ 2.698316][ T2] ? __set_page_owner (mm/page_owner.c:173 mm/page_owner.c:214 mm/page_owner.c:333)
[ 2.698316][ T2] __kmalloc_cache_noprof (mm/slub.c:4544 mm/slub.c:4929 mm/slub.c:5455)
[ 2.698316][ T2] ? __set_page_owner (mm/page_owner.c:173 mm/page_owner.c:214 mm/page_owner.c:333)
[ 2.698316][ T2] __set_page_owner (mm/page_owner.c:173 mm/page_owner.c:214 mm/page_owner.c:333)
[ 2.698316][ T2] post_alloc_hook (mm/page_alloc.c:1852)
[ 2.698316][ T2] prep_new_page (mm/page_alloc.c:1860)
[ 2.698316][ T2] get_page_from_freelist (mm/page_alloc.c:3890 (discriminator 1))
[ 2.698316][ T2] __alloc_frozen_pages_noprof (mm/page_alloc.c:5184 (discriminator 1))
[ 2.698316][ T2] __alloc_pages_noprof (mm/page_alloc.c:5218)
[ 2.698316][ T2] copy_process (kernel/fork.c:367 (discriminator 1) kernel/fork.c:881 (discriminator 1) kernel/fork.c:2012 (discriminator 1))
[ 2.698316][ T2] kernel_clone (include/linux/random.h:26 kernel/fork.c:2610)
[ 2.698316][ T2] ? kthread_is_per_cpu (kernel/kthread.c:412)
[ 2.698316][ T2] kernel_thread (kernel/fork.c:2671)
[ 2.698316][ T2] ? kthread_is_per_cpu (kernel/kthread.c:412)
[ 2.698316][ T2] kthreadd (kernel/kthread.c:486 kernel/kthread.c:846)
[ 2.698316][ T2] ? kthreads_online_cpu (kernel/kthread.c:818)
[ 2.698316][ T2] ret_from_fork (arch/x86/kernel/process.c:164)
[ 2.698316][ T2] ? kthreads_online_cpu (kernel/kthread.c:818)
[ 2.698316][ T2] ret_from_fork_asm (arch/x86/entry/entry_32.S:737)
[ 2.698316][ T2] entry_INT80_32 (arch/x86/entry/entry_32.S:942)
[ 2.698369][ T2] BUG: using smp_processor_id() in preemptible [00000000] code: kthreadd/2
[ 2.700334][ T2] caller is debug_smp_processor_id (lib/smp_processor_id.c:59)
[ 2.702016][ T2] CPU: 0 UID: 0 PID: 2 Comm: kthreadd Tainted: G T 6.18.0-rc1-00012-gde840681a162 #1 PREEMPT(full)
[ 2.702316][ T2] Tainted: [T]=RANDSTRUCT
[ 2.702316][ T2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 2.702316][ T2] Call Trace:
[ 2.702316][ T2] dump_stack_lvl (lib/dump_stack.c:122)
[ 2.702316][ T2] dump_stack (lib/dump_stack.c:130)
[ 2.702316][ T2] check_preemption_disabled+0x98/0xa8
[ 2.702316][ T2] debug_smp_processor_id (lib/smp_processor_id.c:59)
[ 2.702316][ T2] set_track_update (mm/slub.c:1035 (discriminator 1))
[ 2.702316][ T2] ___slab_alloc (mm/slub.c:1046 mm/slub.c:4511)
[ 2.702316][ T2] ? prepare_creds (kernel/cred.c:213)
[ 2.702316][ T2] kmem_cache_alloc_noprof (mm/slub.c:4544 mm/slub.c:4929 mm/slub.c:4948)
[ 2.702316][ T2] ? prepare_creds (kernel/cred.c:213)
[ 2.702316][ T2] prepare_creds (kernel/cred.c:213)
[ 2.702316][ T2] copy_creds (kernel/cred.c:314)
[ 2.702316][ T2] copy_process (kernel/fork.c:2046)
[ 2.702316][ T2] kernel_clone (include/linux/random.h:26 kernel/fork.c:2610)
[ 2.702316][ T2] ? kthread_is_per_cpu (kernel/kthread.c:412)
[ 2.702316][ T2] kernel_thread (kernel/fork.c:2671)
[ 2.702316][ T2] ? kthread_is_per_cpu (kernel/kthread.c:412)
[ 2.702316][ T2] kthreadd (kernel/kthread.c:486 kernel/kthread.c:846)
[ 2.702316][ T2] ? kthreads_online_cpu (kernel/kthread.c:818)
[ 2.702316][ T2] ret_from_fork (arch/x86/kernel/process.c:164)
[ 2.702316][ T2] ? kthreads_online_cpu (kernel/kthread.c:818)
[ 2.702316][ T2] ret_from_fork_asm (arch/x86/entry/entry_32.S:737)
[ 2.702316][ T2] entry_INT80_32 (arch/x86/entry/entry_32.S:942)
[ 2.703358][ T2] BUG: using smp_processor_id() in preemptible [00000000] code: kthreadd/2
[ 2.705335][ T2] caller is debug_smp_processor_id (lib/smp_processor_id.c:59)
[ 2.707023][ T2] CPU: 0 UID: 0 PID: 2 Comm: kthreadd Tainted: G T 6.18.0-rc1-00012-gde840681a162 #1 PREEMPT(full)
[ 2.707316][ T2] Tainted: [T]=RANDSTRUCT
[ 2.707316][ T2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 2.707316][ T2] Call Trace:
[ 2.707316][ T2] dump_stack_lvl (lib/dump_stack.c:122)
[ 2.707316][ T2] dump_stack (lib/dump_stack.c:130)
[ 2.707316][ T2] check_preemption_disabled+0x98/0xa8
[ 2.707316][ T2] debug_smp_processor_id (lib/smp_processor_id.c:59)
[ 2.707316][ T2] set_track_update (mm/slub.c:1035 (discriminator 1))
[ 2.707316][ T2] ___slab_alloc (mm/slub.c:1046 mm/slub.c:4511)
[ 2.707316][ T2] ? set_kthread_struct (include/linux/slab.h:957 include/linux/slab.h:1094 kernel/kthread.c:125)
[ 2.707316][ T2] __kmalloc_cache_noprof (mm/slub.c:4544 mm/slub.c:4929 mm/slub.c:5455)
[ 2.707316][ T2] ? set_kthread_struct (include/linux/slab.h:957 include/linux/slab.h:1094 kernel/kthread.c:125)
[ 2.707316][ T2] set_kthread_struct (include/linux/slab.h:957 include/linux/slab.h:1094 kernel/kthread.c:125)
[ 2.707316][ T2] copy_process (kernel/fork.c:2110 (discriminator 1))
[ 2.707316][ T2] kernel_clone (include/linux/random.h:26 kernel/fork.c:2610)
[ 2.707316][ T2] ? kthread_is_per_cpu (kernel/kthread.c:412)
[ 2.707316][ T2] kernel_thread (kernel/fork.c:2671)
[ 2.707316][ T2] ? kthread_is_per_cpu (kernel/kthread.c:412)
[ 2.707316][ T2] kthreadd (kernel/kthread.c:486 kernel/kthread.c:846)
[ 2.707316][ T2] ? kthreads_online_cpu (kernel/kthread.c:818)
[ 2.707316][ T2] ret_from_fork (arch/x86/kernel/process.c:164)
[ 2.707316][ T2] ? kthreads_online_cpu (kernel/kthread.c:818)
[ 2.707316][ T2] ret_from_fork_asm (arch/x86/entry/entry_32.S:737)
[ 2.707316][ T2] entry_INT80_32 (arch/x86/entry/entry_32.S:942)
[ 2.707369][ T2] BUG: using smp_processor_id() in preemptible [00000000] code: kthreadd/2
[ 2.710331][ T2] caller is debug_smp_processor_id (lib/smp_processor_id.c:59)
[ 2.712340][ T2] CPU: 0 UID: 0 PID: 2 Comm: kthreadd Tainted: G T 6.18.0-rc1-00012-gde840681a162 #1 PREEMPT(full)
[ 2.713316][ T2] Tainted: [T]=RANDSTRUCT
[ 2.713316][ T2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 2.713316][ T2] Call Trace:
[ 2.713316][ T2] dump_stack_lvl (lib/dump_stack.c:122)
[ 2.713316][ T2] dump_stack (lib/dump_stack.c:130)
[ 2.713316][ T2] check_preemption_disabled+0x98/0xa8
[ 2.713316][ T2] debug_smp_processor_id (lib/smp_processor_id.c:59)
[ 2.713316][ T2] set_track_update (mm/slub.c:1035 (discriminator 1))
[ 2.713316][ T2] ___slab_alloc (mm/slub.c:1046 mm/slub.c:4511)
[ 2.713316][ T2] ? copy_sighand (kernel/fork.c:1611 (discriminator 2))
[ 2.713316][ T2] kmem_cache_alloc_noprof (mm/slub.c:4544 mm/slub.c:4929 mm/slub.c:4948)
[ 2.713316][ T2] ? copy_sighand (kernel/fork.c:1611 (discriminator 2))
[ 2.713316][ T2] copy_sighand (kernel/fork.c:1611 (discriminator 2))
[ 2.713316][ T2] copy_process (kernel/fork.c:2176)
[ 2.713316][ T2] kernel_clone (include/linux/random.h:26 kernel/fork.c:2610)
[ 2.713316][ T2] ? kthread_is_per_cpu (kernel/kthread.c:412)
[ 2.713316][ T2] kernel_thread (kernel/fork.c:2671)
[ 2.713316][ T2] ? kthread_is_per_cpu (kernel/kthread.c:412)
[ 2.713316][ T2] kthreadd (kernel/kthread.c:486 kernel/kthread.c:846)
[ 2.713316][ T2] ? kthreads_online_cpu (kernel/kthread.c:818)
[ 2.713316][ T2] ret_from_fork (arch/x86/kernel/process.c:164)
[ 2.713316][ T2] ? kthreads_online_cpu (kernel/kthread.c:818)
[ 2.713316][ T2] ret_from_fork_asm (arch/x86/entry/entry_32.S:737)
[ 2.713316][ T2] entry_INT80_32 (arch/x86/entry/entry_32.S:942)
[ 2.713362][ T2] BUG: using smp_processor_id() in preemptible [00000000] code: kthreadd/2
[ 2.715337][ T2] caller is debug_smp_processor_id (lib/smp_processor_id.c:59)
[ 2.717345][ T2] CPU: 0 UID: 0 PID: 2 Comm: kthreadd Tainted: G T 6.18.0-rc1-00012-gde840681a162 #1 PREEMPT(full)
[ 2.718316][ T2] Tainted: [T]=RANDSTRUCT
[ 2.718316][ T2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 2.718316][ T2] Call Trace:
[ 2.718316][ T2] dump_stack_lvl (lib/dump_stack.c:122)
[ 2.718316][ T2] dump_stack (lib/dump_stack.c:130)
[ 2.718316][ T2] check_preemption_disabled+0x98/0xa8
[ 2.718316][ T2] debug_smp_processor_id (lib/smp_processor_id.c:59)
[ 2.718316][ T2] set_track_update (mm/slub.c:1035 (discriminator 1))
[ 2.718316][ T2] ___slab_alloc (mm/slub.c:1046 mm/slub.c:4511)
[ 2.718316][ T2] ? copy_signal (kernel/fork.c:1659 (discriminator 2))
[ 2.718316][ T2] kmem_cache_alloc_noprof (mm/slub.c:4544 mm/slub.c:4929 mm/slub.c:4948)
[ 2.718316][ T2] ? copy_signal (kernel/fork.c:1659 (discriminator 2))
[ 2.718316][ T2] copy_signal (kernel/fork.c:1659 (discriminator 2))
[ 2.718316][ T2] copy_process (kernel/fork.c:2179)
[ 2.718316][ T2] kernel_clone (include/linux/random.h:26 kernel/fork.c:2610)
[ 2.718316][ T2] ? kthread_is_per_cpu (kernel/kthread.c:412)
[ 2.718316][ T2] kernel_thread (kernel/fork.c:2671)
[ 2.718316][ T2] ? kthread_is_per_cpu (kernel/kthread.c:412)
[ 2.718316][ T2] kthreadd (kernel/kthread.c:486 kernel/kthread.c:846)
[ 2.718316][ T2] ? kthreads_online_cpu (kernel/kthread.c:818)
[ 2.718316][ T2] ret_from_fork (arch/x86/kernel/process.c:164)
[ 2.718316][ T2] ? kthreads_online_cpu (kernel/kthread.c:818)
[ 2.718316][ T2] ret_from_fork_asm (arch/x86/entry/entry_32.S:737)
[ 2.718316][ T2] entry_INT80_32 (arch/x86/entry/entry_32.S:942)
[ 2.718387][ T2] BUG: using smp_processor_id() in preemptible [00000000] code: kthreadd/2
[ 2.720336][ T2] caller is debug_smp_processor_id (lib/smp_processor_id.c:59)
[ 2.722027][ T2] CPU: 0 UID: 0 PID: 2 Comm: kthreadd Tainted: G T 6.18.0-rc1-00012-gde840681a162 #1 PREEMPT(full)
[ 2.722316][ T2] Tainted: [T]=RANDSTRUCT
[ 2.722316][ T2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 2.722316][ T2] Call Trace:
[ 2.722316][ T2] dump_stack_lvl (lib/dump_stack.c:122)
[ 2.722316][ T2] dump_stack (lib/dump_stack.c:130)
[ 2.722316][ T2] check_preemption_disabled+0x98/0xa8
[ 2.722316][ T2] debug_smp_processor_id (lib/smp_processor_id.c:59)
[ 2.722316][ T2] set_track_update (mm/slub.c:1035 (discriminator 1))
[ 2.722316][ T2] ___slab_alloc (mm/slub.c:1046 mm/slub.c:4511)
[ 2.722316][ T2] ? alloc_pid (kernel/pid.c:184 (discriminator 2))
[ 2.722316][ T2] kmem_cache_alloc_noprof (mm/slub.c:4544 mm/slub.c:4929 mm/slub.c:4948)
[ 2.722316][ T2] ? alloc_pid (kernel/pid.c:184 (discriminator 2))
[ 2.722316][ T2] alloc_pid (kernel/pid.c:184 (discriminator 2))
[ 2.722316][ T2] copy_process (kernel/fork.c:2197)
[ 2.722316][ T2] kernel_clone (include/linux/random.h:26 kernel/fork.c:2610)
[ 2.722316][ T2] ? kthread_is_per_cpu (kernel/kthread.c:412)
[ 2.722316][ T2] kernel_thread (kernel/fork.c:2671)
[ 2.722316][ T2] ? kthread_is_per_cpu (kernel/kthread.c:412)
[ 2.722316][ T2] kthreadd (kernel/kthread.c:486 kernel/kthread.c:846)
[ 2.722316][ T2] ? kthreads_online_cpu (kernel/kthread.c:818)
[ 2.722316][ T2] ret_from_fork (arch/x86/kernel/process.c:164)
[ 2.722316][ T2] ? kthreads_online_cpu (kernel/kthread.c:818)
[ 2.722316][ T2] ret_from_fork_asm (arch/x86/entry/entry_32.S:737)
[ 2.722316][ T2] entry_INT80_32 (arch/x86/entry/entry_32.S:942)
[ 2.722693][ T2] BUG: using smp_processor_id() in preemptible [00000000] code: kthreadd/2
[ 2.724339][ T2] caller is debug_smp_processor_id (lib/smp_processor_id.c:59)
[ 2.726341][ T2] CPU: 0 UID: 0 PID: 2 Comm: kthreadd Tainted: G T 6.18.0-rc1-00012-gde840681a162 #1 PREEMPT(full)
[ 2.727316][ T2] Tainted: [T]=RANDSTRUCT
[ 2.727316][ T2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 2.727316][ T2] Call Trace:
[ 2.727316][ T2] dump_stack_lvl (lib/dump_stack.c:122)
[ 2.727316][ T2] dump_stack (lib/dump_stack.c:130)
[ 2.727316][ T2] check_preemption_disabled+0x98/0xa8
[ 2.727316][ T2] debug_smp_processor_id (lib/smp_processor_id.c:59)
[ 2.727316][ T2] set_track_update (mm/slub.c:1035 (discriminator 1))
[ 2.727316][ T2] ___slab_alloc (mm/slub.c:1046 mm/slub.c:4511)
[ 2.727316][ T2] ? copy_process (kernel/fork.c:184 (discriminator 2) kernel/fork.c:873 (discriminator 2) kernel/fork.c:2012 (discriminator 2))
[ 2.727316][ T2] kmem_cache_alloc_node_noprof (mm/slub.c:4544 mm/slub.c:4929 mm/slub.c:4993)
[ 2.727316][ T2] ? copy_process (kernel/fork.c:184 (discriminator 2) kernel/fork.c:873 (discriminator 2) kernel/fork.c:2012 (discriminator 2))
[ 2.727316][ T2] copy_process (kernel/fork.c:184 (discriminator 2) kernel/fork.c:873 (discriminator 2) kernel/fork.c:2012 (discriminator 2))
[ 2.727316][ T2] kernel_clone (include/linux/random.h:26 kernel/fork.c:2610)
[ 2.727316][ T2] ? kthread_is_per_cpu (kernel/kthread.c:412)
[ 2.727316][ T2] kernel_thread (kernel/fork.c:2671)
[ 2.727316][ T2] ? kthread_is_per_cpu (kernel/kthread.c:412)
[ 2.727316][ T2] kthreadd (kernel/kthread.c:486 kernel/kthread.c:846)
[ 2.727316][ T2] ? kthreads_online_cpu (kernel/kthread.c:818)
[ 2.727316][ T2] ret_from_fork (arch/x86/kernel/process.c:164)
[ 2.727316][ T2] ? kthreads_online_cpu (kernel/kthread.c:818)
[ 2.727316][ T2] ret_from_fork_asm (arch/x86/entry/entry_32.S:737)
[ 2.727316][ T2] entry_INT80_32 (arch/x86/entry/entry_32.S:942)
[ 2.727388][ T2] BUG: using smp_processor_id() in preemptible [00000000] code: kthreadd/2
[ 2.729337][ T2] caller is debug_smp_processor_id (lib/smp_processor_id.c:59)
[ 2.731340][ T2] CPU: 0 UID: 0 PID: 2 Comm: kthreadd Tainted: G T 6.18.0-rc1-00012-gde840681a162 #1 PREEMPT(full)
[ 2.732316][ T2] Tainted: [T]=RANDSTRUCT
[ 2.732316][ T2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 2.732316][ T2] Call Trace:
[ 2.732316][ T2] dump_stack_lvl (lib/dump_stack.c:122)
[ 2.732316][ T2] dump_stack (lib/dump_stack.c:130)
[ 2.732316][ T2] check_preemption_disabled+0x98/0xa8
[ 2.732316][ T2] debug_smp_processor_id (lib/smp_processor_id.c:59)
[ 2.732316][ T2] set_track_update (mm/slub.c:1035 (discriminator 1))
[ 2.732316][ T2] ___slab_alloc (mm/slub.c:1046 mm/slub.c:4511)
[ 2.732316][ T2] ? prepare_creds (kernel/cred.c:213)
[ 2.732316][ T2] kmem_cache_alloc_noprof (mm/slub.c:4544 mm/slub.c:4929 mm/slub.c:4948)
[ 2.732316][ T2] ? prepare_creds (kernel/cred.c:213)
[ 2.732316][ T2] prepare_creds (kernel/cred.c:213)
[ 2.732316][ T2] copy_creds (kernel/cred.c:314)
[ 2.732316][ T2] copy_process (kernel/fork.c:2046)
[ 2.732316][ T2] kernel_clone (include/linux/random.h:26 kernel/fork.c:2610)
[ 2.732316][ T2] ? kthread_is_per_cpu (kernel/kthread.c:412)
[ 2.732316][ T2] kernel_thread (kernel/fork.c:2671)
[ 2.732316][ T2] ? kthread_is_per_cpu (kernel/kthread.c:412)
[ 2.732316][ T2] kthreadd (kernel/kthread.c:486 kernel/kthread.c:846)
[ 2.732316][ T2] ? kthreads_online_cpu (kernel/kthread.c:818)
[ 2.732316][ T2] ret_from_fork (arch/x86/kernel/process.c:164)
[ 2.732316][ T2] ? kthreads_online_cpu (kernel/kthread.c:818)
[ 2.732316][ T2] ret_from_fork_asm (arch/x86/entry/entry_32.S:737)
[ 2.732316][ T2] entry_INT80_32 (arch/x86/entry/entry_32.S:942)
[ 2.732364][ T2] BUG: using smp_processor_id() in preemptible [00000000] code: kthreadd/2
[ 2.734337][ T2] caller is debug_smp_processor_id (lib/smp_processor_id.c:59)
[ 2.736018][ T2] CPU: 0 UID: 0 PID: 2 Comm: kthreadd Tainted: G T 6.18.0-rc1-00012-gde840681a162 #1 PREEMPT(full)
[ 2.736316][ T2] Tainted: [T]=RANDSTRUCT
[ 2.736316][ T2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 2.736316][ T2] Call Trace:
[ 2.736316][ T2] dump_stack_lvl (lib/dump_stack.c:122)
[ 2.736316][ T2] dump_stack (lib/dump_stack.c:130)
[ 2.736316][ T2] check_preemption_disabled+0x98/0xa8
[ 2.736316][ T2] debug_smp_processor_id (lib/smp_processor_id.c:59)
[ 2.736316][ T2] set_track_update (mm/slub.c:1035 (discriminator 1))
[ 2.736316][ T2] ___slab_alloc (mm/slub.c:1046 mm/slub.c:4511)
[ 2.736316][ T2] ? set_kthread_struct (include/linux/slab.h:957 include/linux/slab.h:1094 kernel/kthread.c:125)
[ 2.736316][ T2] __kmalloc_cache_noprof (mm/slub.c:4544 mm/slub.c:4929 mm/slub.c:5455)
[ 2.736316][ T2] ? set_kthread_struct (include/linux/slab.h:957 include/linux/slab.h:1094 kernel/kthread.c:125)
[ 2.736316][ T2] set_kthread_struct (include/linux/slab.h:957 include/linux/slab.h:1094 kernel/kthread.c:125)
[ 2.736316][ T2] copy_process (kernel/fork.c:2110 (discriminator 1))
[ 2.736316][ T2] kernel_clone (include/linux/random.h:26 kernel/fork.c:2610)
[ 2.736316][ T2] ? kthread_is_per_cpu (kernel/kthread.c:412)
[ 2.736316][ T2] kernel_thread (kernel/fork.c:2671)
[ 2.736316][ T2] ? kthread_is_per_cpu (kernel/kthread.c:412)
[ 2.736316][ T2] kthreadd (kernel/kthread.c:486 kernel/kthread.c:846)
[ 2.736316][ T2] ? kthreads_online_cpu (kernel/kthread.c:818)
[ 2.736316][ T2] ret_from_fork (arch/x86/kernel/process.c:164)
[ 2.736316][ T2] ? kthreads_online_cpu (kernel/kthread.c:818)
[ 2.736316][ T2] ret_from_fork_asm (arch/x86/entry/entry_32.S:737)
[ 2.736316][ T2] entry_INT80_32 (arch/x86/entry/entry_32.S:942)
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20251016/202510161416.b7adda58-lkp@intel.com
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
next reply other threads:[~2025-10-16 6:08 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-16 6:08 kernel test robot [this message]
2025-10-16 17:26 ` Vlastimil Babka
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