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X-OriginatorOrg: intel.com 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 | 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