* [hare-scsi-devel:configfs-ns.v5] c30cbbf5a2: EIP:configfs_link_subsystems
@ 2026-06-15 14:19 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2026-06-15 14:19 UTC (permalink / raw)
To: Hannes Reinecke; +Cc: oe-lkp, lkp, linux-fsdevel, oliver.sang
Hello,
kernel test robot noticed "EIP:configfs_link_subsystems" on:
commit: c30cbbf5a225651bcec95051409f08b2be078aa8 ("Reshuffle pin_fs and drop global mutex")
https://git.kernel.org/cgit/linux/kernel/git/hare/scsi-devel.git configfs-ns.v5
in testcase: boot
config: i386-randconfig-013-20260614
compiler: gcc-14
test machine: qemu-system-i386 -enable-kvm -cpu SandyBridge -smp 2 -m 4G
(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/202606152237.4fa64355-lkp@intel.com
[ 6.264454][ T1] ------------[ cut here ]------------
[ 6.266633][ T1] WARNING: fs/configfs/dir.c:1937 at configfs_link_subsystems+0x2c0/0x300, CPU#0: swapper/0/1
[ 6.271620][ T1] Modules linked in: aesni_intel
[ 6.273169][ T1] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Tainted: G T 7.1.0-rc2-00056-gc30cbbf5a225 #1 PREEMPT(full)
[ 6.275841][ T1] Tainted: [T]=RANDSTRUCT
[ 6.276725][ T1] EIP: configfs_link_subsystems (configfs/dir.c:1978)
[ 6.290683][ T1] Code: 76 00 0f 0b 6a 01 31 c9 ba 01 00 00 00 b8 68 7e da 82 e8 93 ad d9 ff 59 8d 65 f4 5b 5e 5f 5d 31 c0 31 d2 31 c9 c3 8d 74 26 00 <0f> 0b 6a 01 31 c9 ba 01 00 00 00 b8 38 7e da 82 e8 6b ad d9 ff 5b
All code
========
0: 76 00 jbe 0x2
2: 0f 0b ud2
4: 6a 01 push $0x1
6: 31 c9 xor %ecx,%ecx
8: ba 01 00 00 00 mov $0x1,%edx
d: b8 68 7e da 82 mov $0x82da7e68,%eax
12: e8 93 ad d9 ff call 0xffffffffffd9adaa
17: 59 pop %rcx
18: 8d 65 f4 lea -0xc(%rbp),%esp
1b: 5b pop %rbx
1c: 5e pop %rsi
1d: 5f pop %rdi
1e: 5d pop %rbp
1f: 31 c0 xor %eax,%eax
21: 31 d2 xor %edx,%edx
23: 31 c9 xor %ecx,%ecx
25: c3 ret
26: 8d 74 26 00 lea 0x0(%rsi,%riz,1),%esi
2a:* 0f 0b ud2 <-- trapping instruction
2c: 6a 01 push $0x1
2e: 31 c9 xor %ecx,%ecx
30: ba 01 00 00 00 mov $0x1,%edx
35: b8 38 7e da 82 mov $0x82da7e38,%eax
3a: e8 6b ad d9 ff call 0xffffffffffd9adaa
3f: 5b pop %rbx
Code starting with the faulting instruction
===========================================
0: 0f 0b ud2
2: 6a 01 push $0x1
4: 31 c9 xor %ecx,%ecx
6: ba 01 00 00 00 mov $0x1,%edx
b: b8 38 7e da 82 mov $0x82da7e38,%eax
10: e8 6b ad d9 ff call 0xffffffffffd9ad80
15: 5b pop %rbx
[ 6.296593][ T1] EAX: 00000001 EBX: 00000000 ECX: 00000000 EDX: 00000000
[ 6.298852][ T1] ESI: 80113000 EDI: 80113000 EBP: 80337df4 ESP: 80337dc8
[ 6.301048][ T1] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 EFLAGS: 00010246
[ 6.315892][ T1] CR0: 80050033 CR2: 77f65cd4 CR3: 02f68000 CR4: 00040690
[ 6.318169][ T1] Call Trace:
[ 6.319175][ T1] ? d_instantiate (linux/spinlock.h:390 dcache.c:2081)
[ 6.320578][ T1] configfs_fill_super (configfs/mount.c:156)
[ 6.322193][ T1] ? configfs_unlink.cold (linux/list.h:132 linux/list.h:223 linux/list.h:295 configfs/symlink.c:230)
[ 6.323768][ T1] vfs_get_super (super.c:1327)
[ 6.325079][ T1] get_tree_keyed (super.c:1364)
[ 6.339136][ T1] configfs_get_tree (configfs/mount.c:170)
[ 6.340538][ T1] vfs_get_tree (super.c:1754)
[ 6.341914][ T1] ? vfs_parse_monolithic_sep (linux/fs_context.h:142 (discriminator 2))
[ 6.343687][ T1] fc_mount (namespace.c:1193)
[ 6.344871][ T1] vfs_kern_mount (namespace.c:1231)
[ 6.346307][ T1] simple_pin_fs (libfs.c:1102)
[ 6.347661][ T1] configfs_pin_fs (configfs/mount.c:239)
[ 6.349018][ T1] configfs_register_subsystem (configfs/dir.c:1900)
[ 6.350779][ T1] gpio_sim_init (gpio/gpio-sim.c:1618)
[ 6.352080][ T1] do_one_initcall (main.c:1392)
[ 6.353467][ T1] ? rc5t583_gpio_init (gpio-rc5t583.c:?)
[ 6.354986][ T1] ? parse_args (params.c:153 params.c:186)
[ 6.356314][ T1] do_initcalls (main.c:1454 (discriminator 1) main.c:1470 (discriminator 1))
[ 6.357647][ T1] kernel_init_freeable (main.c:1490 main.c:1703)
[ 6.359228][ T1] ? rest_init (main.c:762)
[ 6.360525][ T1] kernel_init (main.c:1593)
[ 6.361824][ T1] ret_from_fork (x86/kernel/process.c:158)
[ 6.363252][ T1] ? rest_init (main.c:762)
[ 6.364527][ T1] ret_from_fork_asm (x86/entry/entry_32.S:736)
[ 6.365921][ T1] entry_INT80_32 (x86/entry/entry_32.S:940)
[ 6.367299][ T1] irq event stamp: 67993
[ 6.368533][ T1] hardirqs last enabled at (68005): __up_console_sem (printk/printk.c:347 (discriminator 1))
[ 6.371225][ T1] hardirqs last disabled at (68018): __up_console_sem (printk/printk.c:345 (discriminator 1))
[ 6.373845][ T1] softirqs last enabled at (67734): handle_softirqs (softirq.c:468 softirq.c:650)
[ 6.376494][ T1] softirqs last disabled at (67725): __do_softirq (softirq.c:656)
[ 6.379044][ T1] ---[ end trace 0000000000000000 ]---
[ 6.380681][ T1] configfs: configfs_fs_context_free: ns 0
[ 6.382718][ T1] configfs: configfs_get_super_info: use ns 0
[ 6.384538][ T1] gpio_virtuser: Failed to create the debugfs tree: -1
[ 6.386631][ T1] configfs: configfs_get_super_info: use ns 0
[ 6.388488][ T1]
[ 6.389150][ T1] =====================================
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20260615/202606152237.4fa64355-lkp@intel.com
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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2026-06-15 14:19 [hare-scsi-devel:configfs-ns.v5] c30cbbf5a2: EIP:configfs_link_subsystems kernel test robot
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