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Message-ID: <202408161619.9ed8b83e-lkp@intel.com>
Date: Fri, 16 Aug 2024 17:15:12 +0800
From: kernel test robot <oliver.sang@...el.com>
To: Peter Zijlstra <peterz@...radead.org>
CC: <oe-lkp@...ts.linux.dev>, <lkp@...el.com>, <linux-kernel@...r.kernel.org>,
<aubrey.li@...ux.intel.com>, <yu.c.chen@...el.com>, <oliver.sang@...el.com>
Subject: [peterz-queue:sched/core] [sched/fair] 420356c350:
WARNING:at_kernel/sched/core.c:#__might_sleep
Hello,
kernel test robot noticed "WARNING:at_kernel/sched/core.c:#__might_sleep" on:
commit: 420356c3504091f0f6021974389df7c58f365dad ("sched/fair: Implement delayed dequeue")
https://git.kernel.org/cgit/linux/kernel/git/peterz/queue.git sched/core
in testcase: rcutorture
version:
with following parameters:
runtime: 300s
test: cpuhotplug
torture_type: tasks-rude
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)
+-------------------------------------------------------------------------+------------+------------+
| | 18fdefe603 | 420356c350 |
+-------------------------------------------------------------------------+------------+------------+
| WARNING:at_kernel/sched/core.c:#__might_sleep | 0 | 18 |
| RIP:__might_sleep | 0 | 18 |
+-------------------------------------------------------------------------+------------+------------+
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/202408161619.9ed8b83e-lkp@intel.com
[ 86.252370][ T674] ------------[ cut here ]------------
[ 86.252945][ T674] do not call blocking ops when !TASK_RUNNING; state=1 set at kthread_worker_fn (kernel/kthread.c:?)
[ 86.254001][ T674] WARNING: CPU: 1 PID: 674 at kernel/sched/core.c:8469 __might_sleep (kernel/sched/core.c:8465)
[ 86.255224][ T674] Modules linked in: rcutorture torture crct10dif_pclmul crc32c_intel polyval_clmulni polyval_generic tiny_power_button sha256_ssse3 rtc_cmos sha1_ssse3 button aesni_intel evdev ipmi_devintf ipmi_msghandler drm fuse loop efi_pstore drm_panel_orientation_quirks pstore qemu_fw_cfg ip_tables x_tables autofs4
[ 86.260658][ T674] CPU: 1 UID: 0 PID: 674 Comm: erofs_worker/1 Tainted: G T 6.11.0-rc1-00042-g420356c35040 #1 f37f1ad66c1ebf3b07abcf4fc3040d14b7156f8a
[ 86.262530][ T674] Tainted: [T]=RANDSTRUCT
[ 86.263000][ T674] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[ 86.264783][ T674] RIP: 0010:__might_sleep (kernel/sched/core.c:8465)
[ 86.265305][ T674] Code: 00 00 00 00 fc ff df 80 3c 08 00 74 08 4c 89 ff e8 e6 50 62 00 49 8b 0f 48 c7 c7 e0 b0 ee 84 44 89 e6 48 89 ca e8 c1 0e f5 ff <0f> 0b 48 c7 c7 b0 01 8c 86 be 01 00 00 00 31 d2 b9 01 00 00 00 eb
All code
========
0: 00 00 add %al,(%rax)
2: 00 00 add %al,(%rax)
4: fc cld
5: ff (bad)
6: df 80 3c 08 00 74 filds 0x7400083c(%rax)
c: 08 4c 89 ff or %cl,-0x1(%rcx,%rcx,4)
10: e8 e6 50 62 00 call 0x6250fb
15: 49 8b 0f mov (%r15),%rcx
18: 48 c7 c7 e0 b0 ee 84 mov $0xffffffff84eeb0e0,%rdi
1f: 44 89 e6 mov %r12d,%esi
22: 48 89 ca mov %rcx,%rdx
25: e8 c1 0e f5 ff call 0xfffffffffff50eeb
2a:* 0f 0b ud2 <-- trapping instruction
2c: 48 c7 c7 b0 01 8c 86 mov $0xffffffff868c01b0,%rdi
33: be 01 00 00 00 mov $0x1,%esi
38: 31 d2 xor %edx,%edx
3a: b9 01 00 00 00 mov $0x1,%ecx
3f: eb .byte 0xeb
Code starting with the faulting instruction
===========================================
0: 0f 0b ud2
2: 48 c7 c7 b0 01 8c 86 mov $0xffffffff868c01b0,%rdi
9: be 01 00 00 00 mov $0x1,%esi
e: 31 d2 xor %edx,%edx
10: b9 01 00 00 00 mov $0x1,%ecx
15: eb .byte 0xeb
[ 86.266970][ T674] RSP: 0000:ffffc90000f1fdb8 EFLAGS: 00010246
[ 86.267710][ T674] RAX: 93ef2e1fd3a87a00 RBX: 0000000000000001 RCX: 0000000000000000
[ 86.268961][ T674] RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffffffff868af248
[ 86.269995][ T674] RBP: ffffc90000f1fdf0 R08: ffffc90000f1fbf7 R09: 1ffff920001e3f7e
[ 86.270937][ T674] R10: dffffc0000000000 R11: fffff520001e3f7f R12: 0000000000000001
[ 86.272231][ T674] R13: 0000000000000001 R14: 0000000000000001 R15: ffff88817b340080
[ 86.273485][ T674] FS: 0000000000000000(0000) GS:ffff8883aef00000(0000) knlGS:0000000000000000
[ 86.274487][ T674] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 86.275275][ T674] CR2: 0000000000000000 CR3: 0000000005815000 CR4: 00000000000406f0
[ 86.276454][ T674] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 86.277565][ T674] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 86.278443][ T674] Call Trace:
[ 86.279070][ T674] <TASK>
[ 86.279553][ T674] ? show_regs (arch/x86/kernel/dumpstack.c:479)
[ 86.279942][ T674] ? __warn (kernel/panic.c:735)
[ 86.280703][ T674] ? __might_sleep (kernel/sched/core.c:8465)
[ 86.281360][ T674] ? report_bug (lib/bug.c:?)
[ 86.282183][ T674] ? __might_sleep (kernel/sched/core.c:8465)
[ 86.282816][ T674] ? __wake_up_klogd
[ 86.283398][ T674] ? handle_bug (arch/x86/kernel/traps.c:239)
[ 86.283995][ T674] ? exc_invalid_op (arch/x86/kernel/traps.c:260)
[ 86.284787][ T674] ? asm_exc_invalid_op (arch/x86/include/asm/idtentry.h:621)
[ 86.285682][ T674] ? __might_sleep (kernel/sched/core.c:8465)
[ 86.286380][ T674] ? __might_sleep (kernel/sched/core.c:8465)
[ 86.287116][ T674] kthread_worker_fn (include/linux/kernel.h:73 include/linux/freezer.h:53 kernel/kthread.c:851)
[ 86.287701][ T674] ? kthread_worker_fn (kernel/kthread.c:?)
[ 86.288138][ T674] kthread (kernel/kthread.c:391)
[ 86.288482][ T674] ? __cfi_kthread_worker_fn (kernel/kthread.c:803)
[ 86.288951][ T674] ? __cfi_kthread (kernel/kthread.c:342)
[ 86.289560][ T674] ret_from_fork (arch/x86/kernel/process.c:153)
[ 86.290162][ T674] ? __cfi_kthread (kernel/kthread.c:342)
[ 86.291465][ T674] ret_from_fork_asm (arch/x86/entry/entry_64.S:254)
[ 86.292080][ T674] </TASK>
[ 86.292468][ T674] irq event stamp: 579
[ 86.292872][ T674] hardirqs last enabled at (589): console_unlock (arch/x86/include/asm/irqflags.h:42 arch/x86/include/asm/irqflags.h:97 arch/x86/include/asm/irqflags.h:155 kernel/printk/printk.c:341 kernel/printk/printk.c:2801 kernel/printk/printk.c:3120)
[ 86.293852][ T674] hardirqs last disabled at (598): console_unlock (kernel/printk/printk.c:339 kernel/printk/printk.c:2801 kernel/printk/printk.c:3120)
[ 86.294901][ T674] softirqs last enabled at (0): copy_process (include/linux/rcupdate.h:326 include/linux/rcupdate.h:838 kernel/fork.c:2243)
[ 86.296048][ T674] softirqs last disabled at (0): 0x0
[ 86.296931][ T674] ---[ end trace 0000000000000000 ]---
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20240816/202408161619.9ed8b83e-lkp@intel.com
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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