Hello,
we noticed there is same commit in newer branch such like dev.2024.11.14a
and dev.2024.11.17a.
if this is out-of-date version, please just ignore.
we also noticed the WARN added in this commit hit. so just FYI.
kernel test robot noticed "WARNING:at_kernel/rcu/rcutorture.c:#rcutorture_one_extend_check[rcutorture]" on:
commit: d26acb0256b36db3370238cc5c32210f31e9dfd6 ("rcutorture: Make rcutorture_one_extend() check reader state")
https://github.com/paulmckrcu/linux dev.2024.11.11a
in testcase: rcutorture
version:
with following parameters:
runtime: 300s
test: cpuhotplug
torture_type: srcu
config: i386-randconfig-053-20241111
compiler: clang-19
test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G
(please refer to attached dmesg/kmsg for entire log/backtrace)
+------------------------------------------------------------------------------+------------+------------+
| | 43b1ae045d | d26acb0256 |
+------------------------------------------------------------------------------+------------+------------+
| WARNING:at_kernel/rcu/rcutorture.c:#rcutorture_one_extend_check[rcutorture] | 0 | 12 |
| EIP:rcutorture_one_extend_check | 0 | 12 |
+------------------------------------------------------------------------------+------------+------------+
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/202411291603.52f83cd4-lkp@xxxxxxxxx
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20241129/202411291603.52f83cd4-lkp@xxxxxxxxx
[ 62.709400][ T404] ------------[ cut here ]------------
[ 62.709782][ T404] rcutorture_one_extend_check during change: Current 0x20 To add 0x20 To remove 0x0
[ 62.710433][ T404] WARNING: CPU: 0 PID: 404 at kernel/rcu/rcutorture.c:1892 rcutorture_one_extend_check+0x3f8/0x700 [rcutorture]
[ 62.711255][ T404] Modules linked in: rcutorture(+) torture ppdev parport_pc parport ip_tables x_tables autofs4
[ 62.712010][ T404] CPU: 0 UID: 0 PID: 404 Comm: rcu_torture_rea Not tainted 6.12.0-rc2-00092-gd26acb0256b3 #1 f6e892f24717504acbaf436db6a55201e01d506b
[ 62.712960][ T404] EIP: rcutorture_one_extend_check+0x3f8/0x700 [rcutorture]
[ 62.713491][ T404] Code: c9 6a 01 e8 2a 3a 51 ce 83 c4 04 ff 75 0c ff 75 08 8b 5d e4 53 ff 75 e0 68 a9 f7 cb f2 68 5e 03 cc f2 e8 7b 9c 3c ce 83 c4 18 <0f> 0b b8 30 dd d1 f2 ba 01 00 00 00 31 c9 6a 01 e8 f3 39 51 ce 83
[ 62.715104][ T404] EAX: 00000000 EBX: 00000020 ECX: 00000000 EDX: 00000000
[ 62.715608][ T404] ESI: ee0f4f01 EDI: 00000001 EBP: ee331d84 ESP: ee331d64
[ 62.716116][ T404] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 EFLAGS: 00010292
[ 62.716661][ T404] CR0: 80050033 CR2: b6b2c000 CR3: 0013cda0 CR4: 000406f0
[ 62.717181][ T404] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
[ 62.717696][ T404] DR6: fffe0ff0 DR7: 00000400
[ 62.718038][ T404] Call Trace:
[ 62.718290][ T404] ? show_regs+0x62/0x70
[ 62.718611][ T404] ? __warn+0xb1/0x2c0
[ 62.718919][ T404] ? report_bug+0xaf/0x190
[ 62.719244][ T404] ? rcutorture_one_extend_check+0x3f8/0x700 [rcutorture 7a599467fd2675a29242fe514bf39d6557afa4d3]
[ 62.720021][ T404] ? exc_overflow+0x3c/0x3c
[ 62.720345][ T404] ? handle_bug+0x49/0x6c
[ 62.720657][ T404] ? exc_invalid_op+0x24/0x4c
[ 62.720994][ T404] ? handle_exception+0x164/0x164
[ 62.721375][ T404] ? exc_overflow+0x3c/0x3c
[ 62.721707][ T404] ? rcutorture_one_extend_check+0x3f8/0x700 [rcutorture 7a599467fd2675a29242fe514bf39d6557afa4d3]
[ 62.722454][ T404] ? exc_overflow+0x3c/0x3c
[ 62.722791][ T404] ? rcutorture_one_extend_check+0x3f8/0x700 [rcutorture 7a599467fd2675a29242fe514bf39d6557afa4d3]
[ 62.723542][ T404] rcutorture_one_extend+0x1ff/0x5d0 [rcutorture 7a599467fd2675a29242fe514bf39d6557afa4d3]
[ 62.724694][ T404] rcu_torture_one_read+0xb2/0xa10 [rcutorture 7a599467fd2675a29242fe514bf39d6557afa4d3]
[ 62.725459][ T404] rcu_torture_reader+0xe9/0x1d0 [rcutorture 7a599467fd2675a29242fe514bf39d6557afa4d3]
[ 62.726154][ T404] ? rcu_torture_pipe_update+0x150/0x150 [rcutorture 7a599467fd2675a29242fe514bf39d6557afa4d3]
[ 62.726904][ T404] kthread+0x163/0x170
[ 62.727185][ T404] ? rcu_torture_fakewriter+0x4b0/0x4b0 [rcutorture 7a599467fd2675a29242fe514bf39d6557afa4d3]
[ 62.727902][ T404] ? kthread_blkcg+0x60/0x60
[ 62.728212][ T404] ? kthread_blkcg+0x60/0x60
[ 62.728538][ T404] ret_from_fork+0x38/0x50
[ 62.728864][ T404] ret_from_fork_asm+0x12/0x18
[ 62.729196][ T404] entry_INT80_32+0x124/0x124
[ 62.729552][ T404] irq event stamp: 525
[ 62.729849][ T404] hardirqs last enabled at (535): [<c10fc27d>] __console_unlock+0x6d/0xc0
[ 62.730478][ T404] hardirqs last disabled at (544): [<c10fc264>] __console_unlock+0x54/0xc0
[ 62.731122][ T404] softirqs last enabled at (420): [<c1087c8d>] handle_softirqs+0x5cd/0x670
[ 62.731735][ T404] softirqs last disabled at (397): [<c1e73fb3>] __do_softirq+0xf/0x13
[ 62.732315][ T404] ---[ end trace 0000000000000000 ]---
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
