From: kernel test robot <oliver.sang@intel.com>
To: Xin Zhao <jackzxcui1989@163.com>
Cc: <oe-lkp@lists.linux.dev>, <lkp@intel.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jiri Slaby <jirislaby@kernel.org>, <linux-kernel@vger.kernel.org>,
<linux-serial@vger.kernel.org>, <oliver.sang@intel.com>
Subject: [linux-next:master] [tty] d000422a46: sysfs:cannot_create_duplicate_filename
Date: Wed, 28 Jan 2026 22:09:48 +0800 [thread overview]
Message-ID: <202601282134.b947eae9-lkp@intel.com> (raw)
Hello,
kernel test robot noticed "sysfs:cannot_create_duplicate_filename" on:
commit: d000422a46aad32217cf1be747eb61d641baae2f ("tty: tty_port: add workqueue to flip TTY buffer")
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master
[test failed on linux-next/master 615aad0f61e0c7a898184a394dc895c610100d4f]
in testcase: boot
config: x86_64-randconfig-003-20260127
compiler: clang-20
test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 32G
(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/202601282134.b947eae9-lkp@intel.com
[ 90.273010][ T1] gpio_winbond: not an our chip
[ 90.276100][ T1] ledtrig-cpu: registered to indicate activity on CPUs
[ 90.315441][ T1] Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled
[ 90.322749][ T1] 00:04: ttyS1 at I/O 0x2f8 (irq = 3, base_baud = 115200) is a 16550A
[ 90.330210][ T1] 00:05: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A
[ 90.348052][ T1] sysfs: cannot create duplicate filename '/devices/virtual/workqueue/ttyS-flip-wq'
[ 90.352197][ T1] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.19.0-rc3-00049-gd000422a46aa #1 VOLUNTARY 96515dc2651f95070d1b72690dc313e8c588745e
[ 90.352235][ T1] Call Trace:
[ 90.352248][ T1] <TASK>
[ 90.352300][ T1] __dump_stack (kbuild/src/consumer/lib/dump_stack.c:95)
[ 90.352413][ T1] dump_stack_lvl (kbuild/src/consumer/lib/dump_stack.c:123 (discriminator 1))
[ 90.352430][ T1] dump_stack (kbuild/src/consumer/lib/dump_stack.c:130)
[ 90.352440][ T1] sysfs_warn_dup (kbuild/src/consumer/fs/sysfs/dir.c:32)
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20260128/202601282134.b947eae9-lkp@intel.com
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
reply other threads:[~2026-01-28 14:10 UTC|newest]
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