linux-kernel - [linus:master] [igc] 86167183a1: BUG:spinlock_bad_magic_on

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Date: Mon, 3 Jun 2024 15:36:55 +0800
From: kernel test robot <oliver.sang@...el.com>
To: Corinna Vinschen <vinschen@...hat.com>
CC: <oe-lkp@...ts.linux.dev>, <lkp@...el.com>, <linux-kernel@...r.kernel.org>,
	Tony Nguyen <anthony.l.nguyen@...el.com>, Hariprasad Kelam
	<hkelam@...vell.com>, Vinicius Costa Gomes <vinicius.gomes@...el.com>, "Naama
 Meir" <naamax.meir@...ux.intel.com>, <intel-wired-lan@...ts.osuosl.org>,
	<oliver.sang@...el.com>
Subject: [linus:master] [igc]  86167183a1: BUG:spinlock_bad_magic_on_CPU



Hello,

kernel test robot noticed "BUG:spinlock_bad_magic_on_CPU" on:

commit: 86167183a17e03ec77198897975e9fdfbd53cb0b ("igc: fix a log entry using uninitialized netdev")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master

[test failed on linus/master      4a4be1ad3a6efea16c56615f31117590fd881358]
[test failed on linux-next/master 9d99040b1bc8dbf385a8aa535e9efcdf94466e19]

in testcase: boot

compiler: gcc-13
test machine: 20 threads 1 sockets (Commet Lake) with 16G memory

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


we noticed this issue happens on a low rate (10%), but keeps clean on parent.

8e3a90f2e3aa642d 86167183a17e03ec77198897975
---------------- ---------------------------
       fail:runs  %reproduction    fail:runs
           |             |             |
           :100         10%          10:100   dmesg.BUG:spinlock_bad_magic_on_CPU


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/202406031428.22e2b70a-lkp@intel.com


[    7.177394][    T1] BUG: spinlock bad magic on CPU#10, swapper/0/1
[    7.178391][    T1]  lock: 0xffff888133bc3510, .magic: 00000000, .owner: <none>/-1, .owner_cpu: 0
[    7.178391][    T1] CPU: 10 PID: 1 Comm: swapper/0 Not tainted 6.9.0-rc6-01560-g86167183a17e #1
[    7.178391][    T1] Call Trace:
[    7.178391][    T1]  <TASK>
[ 7.178391][ T1] dump_stack_lvl (lib/dump_stack.c:117) 
[ 7.178391][ T1] do_raw_spin_lock (kernel/locking/spinlock_debug.c:87 (discriminator 2) kernel/locking/spinlock_debug.c:115 (discriminator 2)) 
[ 7.178391][ T1] _raw_spin_lock_irqsave (kernel/locking/spinlock.c:163) 
[ 7.178391][ T1] igc_ptp_clear_tx_tstamp (drivers/net/ethernet/intel/igc/igc_ptp.c:578 (discriminator 1)) 
[ 7.178391][ T1] igc_ptp_set_timestamp_mode (drivers/net/ethernet/intel/igc/igc_ptp.c:607 (discriminator 2) drivers/net/ethernet/intel/igc/igc_ptp.c:644 (discriminator 2)) 
[ 7.178391][ T1] igc_ptp_reset (include/linux/spinlock.h:326 drivers/net/ethernet/intel/igc/igc_ptp.c:1261) 
[ 7.178391][ T1] igc_reset (drivers/net/ethernet/intel/igc/igc_main.c:123) 
[ 7.178391][ T1] igc_probe (drivers/net/ethernet/intel/igc/igc_main.c:6728 (discriminator 2) drivers/net/ethernet/intel/igc/igc_main.c:177 (discriminator 2) drivers/net/ethernet/intel/igc/igc_main.c:7039 (discriminator 2)) 
[ 7.178391][ T1] local_pci_probe (drivers/pci/pci-driver.c:324) 
[ 7.178391][ T1] pci_call_probe (drivers/pci/pci-driver.c:392 (discriminator 1)) 
[ 7.178391][ T1] pci_device_probe (drivers/pci/pci-driver.c:452) 
[ 7.178391][ T1] ? driver_sysfs_add (drivers/base/dd.c:447) 
[ 7.178391][ T1] really_probe (drivers/base/dd.c:578 drivers/base/dd.c:656) 
[ 7.178391][ T1] ? __pfx___driver_attach (drivers/base/dd.c:1155) 
[ 7.178391][ T1] __driver_probe_device (drivers/base/dd.c:798) 
[ 7.178391][ T1] driver_probe_device (drivers/base/dd.c:829) 
[ 7.178391][ T1] __driver_attach (drivers/base/dd.c:1215) 
[ 7.178391][ T1] bus_for_each_dev (drivers/base/bus.c:368) 
[ 7.178391][ T1] bus_add_driver (drivers/base/bus.c:674) 
[ 7.178391][ T1] driver_register (drivers/base/driver.c:247) 
[ 7.178391][ T1] ? __pfx_igc_init_module (drivers/net/ethernet/intel/igc/igc_main.c:7534) 
[ 7.178391][ T1] do_one_initcall (init/main.c:1245) 
[ 7.178391][ T1] do_initcalls (init/main.c:1306 (discriminator 1) init/main.c:1323 (discriminator 1)) 
[ 7.178391][ T1] kernel_init_freeable (init/main.c:1559) 
[ 7.178391][ T1] ? __pfx_kernel_init (init/main.c:1436) 
[ 7.178391][ T1] kernel_init (init/main.c:1446) 
[ 7.178391][ T1] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7.178391][ T1] ? __pfx_kernel_init (init/main.c:1436) 
[ 7.178391][ T1] ret_from_fork_asm (arch/x86/entry/entry_64.S:257) 
[    7.178391][    T1]  </TASK>



The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20240603/202406031428.22e2b70a-lkp@intel.com



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