lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [day] [month] [year] [list]
Date: Thu, 29 Feb 2024 21:50:32 +0800
From: kernel test robot <oliver.sang@...el.com>
To: Daniel Bristot de Oliveira <bristot@...nel.org>
CC: <oe-lkp@...ts.linux.dev>, <lkp@...el.com>, Peter Zijlstra
	<peterz@...radead.org>, <linux-kernel@...r.kernel.org>,
	<aubrey.li@...ux.intel.com>, <yu.c.chen@...el.com>, <oliver.sang@...el.com>
Subject: [bristot:dl_server_v6] [sched/fair]  0e52e2609c:
 WARNING:at_kernel/sched/deadline.c:#task_contending



Hello,

kernel test robot noticed "WARNING:at_kernel/sched/deadline.c:#task_contending" on:

commit: 0e52e2609c893e6e423dfcdbeabe05e5ecdbeb8d ("sched/fair: Fair server interface")
git://git.kernel.org/cgit/linux/kernel/git/bristot/linux dl_server_v6

in testcase: kernel-selftests
version: kernel-selftests-x86_64-d2f1c3c9-1_20240223
with following parameters:

	group: cgroup



compiler: gcc-12
test machine: 36 threads 1 sockets Intel(R) Core(TM) i9-10980XE CPU @ 3.00GHz (Cascade Lake) with 32G memory

(please refer to attached dmesg/kmsg for entire log/backtrace)


the issue doesn't always happen (6 times out of 30 runs as below), we also
noticed there is another
"dmesg.WARNING:at_kernel/sched/deadline.c:#task_non_contending"
happen on both this commit and its parent. just FYI.


8384c98fed8762cf 0e52e2609c893e6e423dfcdbeab
---------------- ---------------------------
       fail:runs  %reproduction    fail:runs
           |             |             |
           :30          20%           6:30    dmesg.WARNING:at_kernel/sched/deadline.c:#task_contending
          2:30          13%           6:30    dmesg.WARNING:at_kernel/sched/deadline.c:#task_non_contending



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@...el.com>
| Closes: https://lore.kernel.org/oe-lkp/202402291627.c8168277-lkp@intel.com


[  394.923885][    T0] ------------[ cut here ]------------
[  394.923908][    T0]
[  394.923910][    T0] ======================================================
[  394.923911][    T0] WARNING: possible circular locking dependency detected
[  394.923913][    T0] 6.8.0-rc4-00017-g0e52e2609c89 #1 Not tainted
[  394.923916][    T0] ------------------------------------------------------
[  394.923917][    T0] swapper/2/0 is trying to acquire lock:
[ 394.923919][ T0] ffffffff8514af18 ((console_sem).lock){-...}-{2:2}, at: down_trylock (kernel/locking/semaphore.c:140) 
[  394.923949][    T0]
[  394.923949][    T0] but task is already holding lock:
[ 394.923950][ T0] ffff8888073450d8 (&rq->__lock){-.-.}-{2:2}, at: sched_ttwu_pending (kernel/sched/sched.h:1623 kernel/sched/sched.h:1690 kernel/sched/core.c:3887) 
[  394.923957][    T0]
[  394.923957][    T0] which lock already depends on the new lock.
[  394.923957][    T0]
[  394.923958][    T0]
[  394.923958][    T0] the existing dependency chain (in reverse order) is:
[  394.923958][    T0]
[  394.923958][    T0] -> #2 (&rq->__lock){-.-.}-{2:2}:
[ 394.923961][ T0] __lock_acquire (kernel/locking/lockdep.c:5137) 
[ 394.923966][ T0] lock_acquire (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756 kernel/locking/lockdep.c:5719) 
[ 394.923969][ T0] _raw_spin_lock_nested (kernel/locking/spinlock.c:379) 
[ 394.923971][ T0] raw_spin_rq_lock_nested (arch/x86/include/asm/preempt.h:84 kernel/sched/core.c:561) 
[ 394.923974][ T0] task_fork_fair (kernel/sched/sched.h:1623 kernel/sched/sched.h:1706 kernel/sched/fair.c:12681) 
[ 394.923977][ T0] sched_cgroup_fork (kernel/sched/core.c:4837) 
[ 394.923979][ T0] copy_process (include/linux/timekeeping.h:155 kernel/fork.c:2614) 
[ 394.923982][ T0] kernel_clone (include/linux/random.h:26 kernel/fork.c:2903) 
[ 394.923984][ T0] user_mode_thread (kernel/fork.c:2971) 
[ 394.923985][ T0] rest_init (init/main.c:695) 
[ 394.923990][ T0] arch_call_rest_init+0x13/0x30 
[ 394.923993][ T0] start_kernel (init/main.c:996 (discriminator 1)) 
[ 394.923995][ T0] x86_64_start_reservations (arch/x86/kernel/head64.c:543) 
[ 394.923998][ T0] x86_64_start_kernel (arch/x86/kernel/head64.c:485 (discriminator 17)) 
[ 394.924001][ T0] secondary_startup_64_no_verify (arch/x86/kernel/head_64.S:461) 
[  394.924005][    T0]
[  394.924005][    T0] -> #1 (&p->pi_lock){-.-.}-{2:2}:
[ 394.924007][ T0] __lock_acquire (kernel/locking/lockdep.c:5137) 
[ 394.924010][ T0] lock_acquire (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756 kernel/locking/lockdep.c:5719) 
[ 394.924012][ T0] _raw_spin_lock_irqsave (include/linux/spinlock_api_smp.h:111 kernel/locking/spinlock.c:162) 
[ 394.924014][ T0] try_to_wake_up (kernel/sched/core.c:4253) 
[ 394.924017][ T0] up (kernel/locking/semaphore.c:191) 
[ 394.924019][ T0] console_unlock (kernel/printk/printk.c:341 kernel/printk/printk.c:2706 kernel/printk/printk.c:3038) 
[ 394.924021][ T0] vprintk_emit (kernel/printk/printk.c:2303) 
[ 394.924023][ T0] _printk (kernel/printk/printk.c:2323) 
[  394.924026][    T0]        0xffffffffc028e0e1
[ 394.924031][ T0] do_one_initcall (init/main.c:1236) 
[ 394.924034][ T0] do_init_module (kernel/module/main.c:2533) 
[ 394.924038][ T0] load_module (kernel/module/main.c:2984) 
[ 394.924040][ T0] init_module_from_file (kernel/module/main.c:3151) 
[ 394.924042][ T0] idempotent_init_module (kernel/module/main.c:3168) 
[ 394.924044][ T0] __x64_sys_finit_module (include/linux/file.h:45 kernel/module/main.c:3190 kernel/module/main.c:3172 kernel/module/main.c:3172) 
[ 394.924046][ T0] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 394.924048][ T0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
[  394.924051][    T0]
[  394.924051][    T0] -> #0 ((console_sem).lock){-...}-{2:2}:
[ 394.924054][ T0] check_prev_add (kernel/locking/lockdep.c:3135) 
[ 394.924056][ T0] validate_chain (kernel/locking/lockdep.c:3254 kernel/locking/lockdep.c:3869) 
[ 394.924059][ T0] __lock_acquire (kernel/locking/lockdep.c:5137) 
[ 394.924061][ T0] lock_acquire (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756 kernel/locking/lockdep.c:5719) 
[ 394.924063][ T0] _raw_spin_lock_irqsave (include/linux/spinlock_api_smp.h:111 kernel/locking/spinlock.c:162) 
[ 394.924065][ T0] down_trylock (kernel/locking/semaphore.c:140) 
[ 394.924067][ T0] __down_trylock_console_sem (kernel/printk/printk.c:323) 
[ 394.924070][ T0] console_trylock (kernel/printk/printk.c:2659) 
[ 394.924073][ T0] console_trylock_spinning (kernel/printk/printk.c:1923) 
[ 394.924076][ T0] vprintk_emit (kernel/printk/printk.c:2302) 
[ 394.924077][ T0] _printk (kernel/printk/printk.c:2323) 
[ 394.924079][ T0] __warn_printk (kernel/panic.c:723) 
[ 394.924081][ T0] task_contending (kernel/sched/deadline.c:254 kernel/sched/deadline.c:314 kernel/sched/deadline.c:511) 
[ 394.924085][ T0] enqueue_dl_entity (kernel/sched/deadline.c:75 kernel/sched/deadline.c:1061 kernel/sched/deadline.c:1921) 
[ 394.924087][ T0] enqueue_task_fair (kernel/sched/fair.c:6730) 
[ 394.924089][ T0] activate_task (kernel/sched/core.c:2150) 
[ 394.924091][ T0] ttwu_do_activate (kernel/sched/core.c:3796) 
[ 394.924094][ T0] sched_ttwu_pending (kernel/sched/core.c:3890 (discriminator 2)) 
[ 394.924096][ T0] __flush_smp_call_function_queue (arch/x86/include/asm/jump_label.h:27 include/linux/jump_label.h:207 include/trace/events/csd.h:64 kernel/smp.c:134 kernel/smp.c:558) 
[ 394.924101][ T0] flush_smp_call_function_queue (kernel/smp.c:587 (discriminator 1)) 
[ 394.924104][ T0] do_idle (kernel/sched/idle.c:340) 
[ 394.924106][ T0] cpu_startup_entry (kernel/sched/idle.c:409 (discriminator 1)) 
[ 394.924109][ T0] start_secondary (arch/x86/kernel/smpboot.c:224 arch/x86/kernel/smpboot.c:304) 
[ 394.924111][ T0] secondary_startup_64_no_verify (arch/x86/kernel/head_64.S:461) 
[  394.924114][    T0]
[  394.924114][    T0] other info that might help us debug this:
[  394.924114][    T0]
[  394.924114][    T0] Chain exists of:
[  394.924114][    T0]   (console_sem).lock --> &p->pi_lock --> &rq->__lock
[  394.924114][    T0]
[  394.924118][    T0]  Possible unsafe locking scenario:
[  394.924118][    T0]
[  394.924118][    T0]        CPU0                    CPU1
[  394.924119][    T0]        ----                    ----
[  394.924119][    T0]   lock(&rq->__lock);
[  394.924120][    T0]                                lock(&p->pi_lock);
[  394.924122][    T0]                                lock(&rq->__lock);
[  394.924123][    T0]   lock((console_sem).lock);
[  394.924124][    T0]
[  394.924124][    T0]  *** DEADLOCK ***
[  394.924124][    T0]
[  394.924125][    T0] 1 lock held by swapper/2/0:
[ 394.924126][ T0] #0: ffff8888073450d8 (&rq->__lock){-.-.}-{2:2}, at: sched_ttwu_pending (kernel/sched/sched.h:1623 kernel/sched/sched.h:1690 kernel/sched/core.c:3887) 
[  394.924131][    T0]
[  394.924131][    T0] stack backtrace:
[  394.924133][    T0] CPU: 2 PID: 0 Comm: swapper/2 Not tainted 6.8.0-rc4-00017-g0e52e2609c89 #1
[  394.924135][    T0] Hardware name: Gigabyte Technology Co., Ltd. X299 UD4 Pro/X299 UD4 Pro-CF, BIOS F8a 04/27/2021
[  394.924137][    T0] Call Trace:
[  394.924138][    T0]  <TASK>
[ 394.924140][ T0] dump_stack_lvl (lib/dump_stack.c:108) 
[ 394.924146][ T0] check_noncircular (kernel/locking/lockdep.c:2187) 
[ 394.924150][ T0] ? print_circular_bug (kernel/locking/lockdep.c:2163) 
[ 394.924153][ T0] ? data_push_tail (arch/x86/include/asm/atomic64_64.h:15 include/linux/atomic/atomic-arch-fallback.h:2569 include/linux/atomic/atomic-long.h:38 include/linux/atomic/atomic-instrumented.h:3161 kernel/printk/printk_ringbuffer.c:661) 
[ 394.924160][ T0] check_prev_add (kernel/locking/lockdep.c:3135) 
[ 394.924163][ T0] ? print_bfs_bug (kernel/locking/lockdep.c:140) 
[ 394.924167][ T0] validate_chain (kernel/locking/lockdep.c:3254 kernel/locking/lockdep.c:3869) 
[ 394.924172][ T0] ? check_prev_add (kernel/locking/lockdep.c:3825) 
[ 394.924175][ T0] ? mark_lock (arch/x86/include/asm/bitops.h:227 (discriminator 3) arch/x86/include/asm/bitops.h:239 (discriminator 3) include/asm-generic/bitops/instrumented-non-atomic.h:142 (discriminator 3) kernel/locking/lockdep.c:228 (discriminator 3) kernel/locking/lockdep.c:4656 (discriminator 3)) 
[ 394.924179][ T0] __lock_acquire (kernel/locking/lockdep.c:5137) 
[ 394.924183][ T0] ? prb_final_commit (arch/x86/include/asm/atomic64_64.h:20 include/linux/atomic/atomic-arch-fallback.h:2615 include/linux/atomic/atomic-long.h:79 include/linux/atomic/atomic-instrumented.h:3196 kernel/printk/printk_ringbuffer.c:1671) 
[ 394.924187][ T0] lock_acquire (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756 kernel/locking/lockdep.c:5719) 
[ 394.924189][ T0] ? down_trylock (kernel/locking/semaphore.c:140) 
[ 394.924193][ T0] ? lock_sync (kernel/locking/lockdep.c:5722) 
[ 394.924196][ T0] ? secondary_startup_64_no_verify (arch/x86/kernel/head_64.S:461) 
[ 394.924200][ T0] ? validate_chain (kernel/locking/lockdep.c:3836) 
[ 394.924204][ T0] _raw_spin_lock_irqsave (include/linux/spinlock_api_smp.h:111 kernel/locking/spinlock.c:162) 
[ 394.924206][ T0] ? down_trylock (kernel/locking/semaphore.c:140) 
[ 394.924209][ T0] down_trylock (kernel/locking/semaphore.c:140) 
[ 394.924212][ T0] ? console_trylock_spinning (kernel/printk/printk.c:1923) 
[ 394.924215][ T0] __down_trylock_console_sem (kernel/printk/printk.c:323) 
[ 394.924218][ T0] console_trylock (kernel/printk/printk.c:2659) 
[ 394.924221][ T0] console_trylock_spinning (kernel/printk/printk.c:1923) 
[ 394.924225][ T0] vprintk_emit (kernel/printk/printk.c:2302) 
[ 394.924227][ T0] ? wake_up_klogd_work_func (kernel/printk/printk.c:2265) 
[ 394.924230][ T0] ? validate_chain (arch/x86/include/asm/bitops.h:227 arch/x86/include/asm/bitops.h:239 include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228 kernel/locking/lockdep.c:3781 kernel/locking/lockdep.c:3837) 
[ 394.924233][ T0] _printk (kernel/printk/printk.c:2323) 
[ 394.924236][ T0] ? printk_timed_ratelimit (kernel/printk/printk.c:2323) 
[ 394.924240][ T0] ? validate_chain (arch/x86/include/asm/bitops.h:227 arch/x86/include/asm/bitops.h:239 include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228 kernel/locking/lockdep.c:3781 kernel/locking/lockdep.c:3837) 
[ 394.924245][ T0] __warn_printk (kernel/panic.c:723) 
[ 394.924247][ T0] ? warn_count_show (kernel/panic.c:717) 
[ 394.924253][ T0] task_contending (kernel/sched/deadline.c:254 kernel/sched/deadline.c:314 kernel/sched/deadline.c:511) 
[ 394.924257][ T0] enqueue_dl_entity (kernel/sched/deadline.c:75 kernel/sched/deadline.c:1061 kernel/sched/deadline.c:1921) 
[ 394.924259][ T0] ? lock_acquire (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756 kernel/locking/lockdep.c:5719) 
[ 394.924263][ T0] enqueue_task_fair (kernel/sched/fair.c:6730) 
[ 394.924266][ T0] activate_task (kernel/sched/core.c:2150) 
[ 394.924271][ T0] ttwu_do_activate (kernel/sched/core.c:3796) 
[ 394.924274][ T0] ? update_rq_clock_task (kernel/sched/sched.h:1382 kernel/sched/pelt.h:66 kernel/sched/pelt.h:80 kernel/sched/pelt.h:98 kernel/sched/core.c:748) 
[ 394.924277][ T0] sched_ttwu_pending (kernel/sched/core.c:3890 (discriminator 2)) 
[ 394.924281][ T0] ? ttwu_do_activate (kernel/sched/core.c:3878) 
[ 394.924284][ T0] ? tick_nohz_restart_sched_tick (include/linux/hrtimer.h:395 kernel/time/tick-sched.c:784 kernel/time/tick-sched.c:995) 
[ 394.924287][ T0] ? do_raw_spin_unlock (arch/x86/include/asm/atomic.h:23 include/linux/atomic/atomic-arch-fallback.h:457 include/linux/atomic/atomic-instrumented.h:33 include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 394.924290][ T0] __flush_smp_call_function_queue (arch/x86/include/asm/jump_label.h:27 include/linux/jump_label.h:207 include/trace/events/csd.h:64 kernel/smp.c:134 kernel/smp.c:558) 
[ 394.924295][ T0] flush_smp_call_function_queue (kernel/smp.c:587 (discriminator 1)) 
[ 394.924298][ T0] do_idle (kernel/sched/idle.c:340) 
[ 394.924302][ T0] cpu_startup_entry (kernel/sched/idle.c:409 (discriminator 1)) 
[ 394.924305][ T0] start_secondary (arch/x86/kernel/smpboot.c:224 arch/x86/kernel/smpboot.c:304) 
[ 394.924307][ T0] ? set_cpu_sibling_map (arch/x86/kernel/smpboot.c:254) 
[ 394.924310][ T0] ? soft_restart_cpu (arch/x86/kernel/head_64.S:498) 
[ 394.924312][ T0] secondary_startup_64_no_verify (arch/x86/kernel/head_64.S:461) 
[  394.924318][    T0]  </TASK>
[  394.998201][    T0] dl_rq->running_bw > dl_rq->this_bw
[  394.998207][    T0] WARNING: CPU: 2 PID: 0 at kernel/sched/deadline.c:254 task_contending+0x6bf/0x820
[  394.999605][    T0] Modules linked in: netconsole openvswitch nf_conncount nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 intel_rapl_msr intel_rapl_common nfit libnvdimm x86_pkg_temp_thermal intel_powerclamp btrfs blake2b_generic xor coretemp kvm_intel raid6_pq kvm zstd_compress libcrc32c irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel sha512_ssse3 rapl intel_cstate nvme nvme_core t10_pi crc64_rocksoft_generic ahci mei_me libahci ipmi_devintf crc64_rocksoft ipmi_msghandler wmi_bmof intel_wmi_thunderbolt mxm_wmi intel_uncore wdat_wdt crc64 libata i2c_i801 mei i2c_smbus ioatdma dca wmi binfmt_misc loop fuse drm dm_mod ip_tables
[  395.004574][    T0] CPU: 2 PID: 0 Comm: swapper/2 Not tainted 6.8.0-rc4-00017-g0e52e2609c89 #1
[  395.005380][    T0] Hardware name: Gigabyte Technology Co., Ltd. X299 UD4 Pro/X299 UD4 Pro-CF, BIOS F8a 04/27/2021
[  395.006325][    T0] RIP: 0010:task_contending+0x6bf/0x820
[  395.006858][    T0] Code: fc ff ff 0f 0b e9 c7 fc ff ff 80 3d 91 c3 84 04 00 0f 85 c2 fb ff ff 48 c7 c7 a0 c2 09 84 c6 05 7d c3 84 04 01 e8 71 7a ec ff <0f> 0b e9 a8 fb ff ff 80 3d 6b c3 84 04 00 0f 85 6c fb ff ff 48 c7
[  395.008559][    T0] RSP: 0000:ffffc900001f7bf8 EFLAGS: 00010086
[  395.009136][    T0] RAX: 0000000000000000 RBX: ffff888807345b10 RCX: 0000000000000027
[  395.009876][    T0] RDX: 0000000000000027 RSI: 0000000000000004 RDI: ffff888807330c08
[  395.010618][    T0] RBP: ffff8888073450c0 R08: ffffffff816cfe56 R09: ffffed1100e66181
[  395.011357][    T0] R10: ffff888807330c0b R11: 0000000000000001 R12: ffffffff85bf7158
[  395.012097][    T0] R13: 0000000000019998 R14: ffff888807345ae8 R15: 000000000000cccc
[  395.012839][    T0] FS:  0000000000000000(0000) GS:ffff888807300000(0000) knlGS:0000000000000000
[  395.013656][    T0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  395.014270][    T0] CR2: 00007fa2265fff78 CR3: 000000089be7a003 CR4: 00000000003706f0
[  395.015008][    T0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  395.015748][    T0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  395.017413][    T0] Call Trace:
[  395.017764][    T0]  <TASK>
[  395.018083][    T0]  ? __warn+0xcd/0x2b0
[  395.018500][    T0]  ? task_contending+0x6bf/0x820
[  395.018983][    T0]  ? report_bug+0x267/0x2d0
[  395.019431][    T0]  ? handle_bug+0x3c/0x70
[  395.019868][    T0]  ? exc_invalid_op+0x17/0x40
[  395.020331][    T0]  ? asm_exc_invalid_op+0x1a/0x20
[  395.020820][    T0]  ? irq_work_claim+0x16/0x60
[  395.021289][    T0]  ? task_contending+0x6bf/0x820
[  395.021789][    T0]  ? task_contending+0x6bf/0x820
[  395.022272][    T0]  enqueue_dl_entity+0xa57/0x2430
[  395.022764][    T0]  ? lock_acquire+0x193/0x4b0
[  395.023238][    T0]  enqueue_task_fair+0x919/0xe70
[  395.023719][    T0]  activate_task+0xf7/0x2f0
[  395.024182][    T0]  ttwu_do_activate+0x11b/0x8c0
[  395.024657][    T0]  ? update_rq_clock_task+0x699/0x850
[  395.025173][    T0]  sched_ttwu_pending+0x27e/0x500
[  395.025662][    T0]  ? ttwu_do_activate+0x8c0/0x8c0
[  395.026168][    T0]  ? tick_nohz_restart_sched_tick+0x1b1/0x230
[  395.026754][    T0]  ? do_raw_spin_unlock+0x58/0x1f0
[  395.027256][    T0]  __flush_smp_call_function_queue+0x44b/0xb10
[  395.027842][    T0]  flush_smp_call_function_queue+0x68/0xa0
[  395.028397][    T0]  do_idle+0x118/0x1a0
[  395.028806][    T0]  cpu_startup_entry+0x55/0x60
[  395.029271][    T0]  start_secondary+0x209/0x290
[  395.029738][    T0]  ? set_cpu_sibling_map+0x2320/0x2320
[  395.030279][    T0]  ? soft_restart_cpu+0x15/0x15
[  395.030754][    T0]  secondary_startup_64_no_verify+0x184/0x18b
[  395.031339][    T0]  </TASK>
[  395.031665][    T0] irq event stamp: 1494506
[  395.032104][    T0] hardirqs last  enabled at (1494505): [<ffffffff814cd657>] tick_nohz_idle_exit+0xc7/0x190
[  395.033005][    T0] hardirqs last disabled at (1494506): [<ffffffff814e1c6e>] flush_smp_call_function_queue+0x5e/0xa0
[  395.033988][    T0] softirqs last  enabled at (1494464): [<ffffffff83c6c07a>] __do_softirq+0x53a/0x80e
[  395.034851][    T0] softirqs last disabled at (1494447): [<ffffffff8122b4c2>] __irq_exit_rcu+0x132/0x180
[  395.035735][    T0] ---[ end trace 0000000000000000 ]---


The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20240229/202402291627.c8168277-lkp@intel.com



-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki


Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ