Hello,
kernel test robot noticed "BUG:using__this_cpu_read()in_preemptible" on:
commit: 26cb612c431de5093ae6a3a67ecaa0363f5b8829 ("srcu: Add srcu_read_lock_lite() and srcu_read_unlock_lite()")
https://github.com/paulmckrcu/linux dev
in testcase: rcutorture
version:
with following parameters:
runtime: 300s
test: cpuhotplug
torture_type: srcud
compiler: gcc-12
test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G
(please refer to attached dmesg/kmsg for entire log/backtrace)
in our tests, this issue doesn't always happen, but with a not small rate.
daf812f27d6bbe4c 26cb612c431de5093ae6a3a67ec
---------------- ---------------------------
fail:runs %reproduction fail:runs
| | |
:50 66% 33:50 dmesg.BUG:using__this_cpu_read()in_preemptible
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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-lkp/202409231124.358fed11-lkp@xxxxxxxxx
[ 169.560380][ T76] BUG: using __this_cpu_read() in preemptible [00000000] code: kworker/1:2/76
[ 169.561229][ T76] caller is try_check_zero (kernel/rcu/srcutree.c:485 kernel/rcu/srcutree.c:1149)
[ 169.561657][ T76] CPU: 0 UID: 0 PID: 76 Comm: kworker/1:2 Not tainted 6.11.0-rc1-00125-g26cb612c431d #1
[ 169.562369][ T76] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[ 169.563120][ T76] Workqueue: rcu_gp process_srcu
[ 169.563518][ T76] Call Trace:
[ 169.563789][ T76] <TASK>
[ 169.564031][ T76] dump_stack_lvl (lib/dump_stack.c:122)
[ 169.564418][ T76] check_preemption_disabled (lib/smp_processor_id.c:52)
[ 169.564842][ T76] ? try_check_zero (kernel/rcu/srcutree.c:485 kernel/rcu/srcutree.c:1149)
[ 169.565219][ T76] ? process_one_work (kernel/workqueue.c:3206)
[ 169.565592][ T76] ? srcu_advance_state (kernel/rcu/srcutree.c:1784)
[ 169.565994][ T76] ? process_srcu (kernel/rcu/srcutree.c:1893)
[ 169.566373][ T76] ? process_one_work (kernel/workqueue.c:3236)
[ 169.566790][ T76] ? __pfx_process_one_work (kernel/workqueue.c:3133)
[ 169.567199][ T76] ? __list_add (include/linux/list.h:83 include/linux/list.h:150)
[ 169.567559][ T76] ? process_scheduled_works (kernel/workqueue.c:3312)
[ 169.567990][ T76] ? worker_thread (include/linux/list.h:373 kernel/workqueue.c:948 kernel/workqueue.c:3391)
[ 169.568361][ T76] ? __kthread_parkme (arch/x86/include/asm/current.h:49 kernel/kthread.c:293)
[ 169.568761][ T76] ? __pfx_worker_thread (kernel/workqueue.c:3339)
[ 169.569156][ T76] ? kthread (kernel/kthread.c:389)
[ 169.569474][ T76] ? __pfx_kthread (kernel/kthread.c:342)
[ 169.569848][ T76] ? ret_from_fork (arch/x86/kernel/process.c:153)
[ 169.570212][ T76] ? __pfx_kthread (kernel/kthread.c:342)
[ 169.570563][ T76] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:257)
[ 169.570954][ T76] </TASK>
[ 169.652036][ T76] BUG: using __this_cpu_read() in preemptible [00000000] code: kworker/1:2/76
[ 169.652785][ T76] caller is try_check_zero (kernel/rcu/srcutree.c:485 kernel/rcu/srcutree.c:1149)
[ 169.653204][ T76] CPU: 0 UID: 0 PID: 76 Comm: kworker/1:2 Not tainted 6.11.0-rc1-00125-g26cb612c431d #1
[ 169.653945][ T76] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[ 169.654710][ T76] Workqueue: rcu_gp process_srcu
[ 169.655095][ T76] Call Trace:
[ 169.655357][ T76] <TASK>
[ 169.655591][ T76] dump_stack_lvl (lib/dump_stack.c:122)
[ 169.655958][ T76] check_preemption_disabled (lib/smp_processor_id.c:52)
[ 169.656392][ T76] ? try_check_zero (kernel/rcu/srcutree.c:485 kernel/rcu/srcutree.c:1149)
[ 169.656771][ T76] ? process_one_work (kernel/workqueue.c:3206)
[ 169.657162][ T76] ? srcu_advance_state (kernel/rcu/srcutree.c:1765)
[ 169.657559][ T76] ? process_srcu (kernel/rcu/srcutree.c:1893)
[ 169.657909][ T76] ? process_one_work (kernel/workqueue.c:3236)
[ 169.658263][ T76] ? __pfx_process_one_work (kernel/workqueue.c:3133)
[ 169.658623][ T76] ? __list_add (include/linux/list.h:83 include/linux/list.h:150)
[ 169.658911][ T76] ? process_scheduled_works (kernel/workqueue.c:3312)
[ 169.659254][ T76] ? worker_thread (include/linux/list.h:373 kernel/workqueue.c:948 kernel/workqueue.c:3391)
[ 169.659554][ T76] ? __kthread_parkme (arch/x86/include/asm/current.h:49 kernel/kthread.c:293)
[ 169.659885][ T76] ? __pfx_worker_thread (kernel/workqueue.c:3339)
[ 169.660211][ T76] ? kthread (kernel/kthread.c:389)
[ 169.660480][ T76] ? __pfx_kthread (kernel/kthread.c:342)
[ 169.660773][ T76] ? ret_from_fork (arch/x86/kernel/process.c:153)
[ 169.661069][ T76] ? __pfx_kthread (kernel/kthread.c:342)
[ 169.661363][ T76] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:257)
[ 169.661693][ T76] </TASK>
[ 169.662140][ T76] BUG: using __this_cpu_read() in preemptible [00000000] code: kworker/1:2/76
[ 169.662810][ T76] caller is try_check_zero (kernel/rcu/srcutree.c:485 kernel/rcu/srcutree.c:1149)
[ 169.663222][ T76] CPU: 0 UID: 0 PID: 76 Comm: kworker/1:2 Not tainted 6.11.0-rc1-00125-g26cb612c431d #1
[ 169.663934][ T76] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[ 169.664696][ T76] Workqueue: rcu_gp process_srcu
[ 169.665091][ T76] Call Trace:
[ 169.665353][ T76] <TASK>
[ 169.665586][ T76] dump_stack_lvl (lib/dump_stack.c:122)
[ 169.665959][ T76] check_preemption_disabled (lib/smp_processor_id.c:52)
[ 169.666369][ T76] ? try_check_zero (kernel/rcu/srcutree.c:485 kernel/rcu/srcutree.c:1149)
[ 169.666727][ T76] ? preempt_count_sub (kernel/sched/core.c:5685)
[ 169.667127][ T76] ? process_one_work (kernel/workqueue.c:3206)
[ 169.667519][ T76] ? srcu_advance_state (kernel/rcu/srcutree.c:1784)
[ 169.667938][ T76] ? process_srcu (kernel/rcu/srcutree.c:1893)
[ 169.668310][ T76] ? process_one_work (kernel/workqueue.c:3236)
[ 169.668719][ T76] ? __pfx_process_one_work (kernel/workqueue.c:3133)
[ 169.669150][ T76] ? __list_add (include/linux/list.h:83 include/linux/list.h:150)
[ 169.669517][ T76] ? process_scheduled_works (kernel/workqueue.c:3312)
[ 169.669954][ T76] ? worker_thread (include/linux/list.h:373 kernel/workqueue.c:948 kernel/workqueue.c:3391)
[ 169.670303][ T76] ? __kthread_parkme (arch/x86/include/asm/current.h:49 kernel/kthread.c:293)
[ 169.670692][ T76] ? __pfx_worker_thread (kernel/workqueue.c:3339)
[ 169.671077][ T76] ? kthread (kernel/kthread.c:389)
[ 169.671412][ T76] ? __pfx_kthread (kernel/kthread.c:342)
[ 169.671761][ T76] ? ret_from_fork (arch/x86/kernel/process.c:153)
[ 169.672114][ T76] ? __pfx_kthread (kernel/kthread.c:342)
[ 169.672463][ T76] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:257)
[ 169.672861][ T76] </TASK>
[ 169.690595][ T75] smpboot: CPU 1 is now offline
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20240923/202409231124.358fed11-lkp@xxxxxxxxx
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
