* [soc:board-remove-7.3] [net] 8d91a5ecce: EIP:kernfs_remove_by_name_ns
@ 2026-09-22 7:23 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2026-09-22 7:23 UTC (permalink / raw)
To: Arnd Bergmann
Cc: oe-lkp, lkp, linux-arm-kernel, arm, linux-kernel, linux-wireless,
brcm80211, brcm80211-dev-list.pdl, yi1.lai
Hello,
kernel test robot noticed "EIP:kernfs_remove_by_name_ns" on:
commit: 8d91a5ecce11412c646ad1f1637334ef9546ea90 ("net: wireless: brcmfmac: remove platform data based probe") https://git.kernel.org/cgit/linux/kernel/git/soc/soc.git board-remove-7.3
in testcase: boot
config: i386-randconfig-011-20260914
compiler: clang-22
test machine: qemu-system-i386 -enable-kvm -cpu SandyBridge -smp 4 -m 4G
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 <yi1.lai@intel.com>
| Closes: https://lore.kernel.org/oe-lkp/202609221423.71fce5fb-lkp@intel.com
[ 5.486950][ T1] ------------[ cut here ]------------
[ 5.488426][ T1] kernfs: can not remove 'uevent', no directory
[ 5.489919][ T1] WARNING: fs/kernfs/dir.c:1786 at kernfs_remove_by_name_ns+0x7b/0xc0, CPU#0: swapper/0/1
[ 5.492378][ T1] Modules linked in:
[ 5.493281][ T1] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 7.3.0-rc2-00073-g8d91a5ecce11 #1 PREEMPTLAZY
[ 5.495837][ T1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 5.498316][ T1] EIP: kernfs_remove_by_name_ns (kernfs/dir.c:1785)
[ 5.499706][ T1] Code: 74 5a a8 03 75 5c ff 00 89 c1 89 c6 e8 5e f9 ff ff 89 f0 e8 d7 d8 ff ff 31 f6 eb 1c 53 68 30 84 07 c3 e8 08 1b d4 ff 83 c4 08 <0f> 0b be fe ff ff ff eb 14 be fe ff ff ff 89 f8 e8 70 da da ff 8b
All code
========
0: 74 5a je 0x5c
2: a8 03 test $0x3,%al
4: 75 5c jne 0x62
6: ff 00 incl (%rax)
8: 89 c1 mov %eax,%ecx
a: 89 c6 mov %eax,%esi
c: e8 5e f9 ff ff call 0xfffffffffffff96f
11: 89 f0 mov %esi,%eax
13: e8 d7 d8 ff ff call 0xffffffffffffd8ef
18: 31 f6 xor %esi,%esi
1a: eb 1c jmp 0x38
1c: 53 push %rbx
1d: 68 30 84 07 c3 push $0xffffffffc3078430
22: e8 08 1b d4 ff call 0xffffffffffd41b2f
27: 83 c4 08 add $0x8,%esp
2a:* 0f 0b ud2 <-- trapping instruction
2c: be fe ff ff ff mov $0xfffffffe,%esi
31: eb 14 jmp 0x47
33: be fe ff ff ff mov $0xfffffffe,%esi
38: 89 f8 mov %edi,%eax
3a: e8 70 da da ff call 0xffffffffffdadaaf
3f: 8b .byte 0x8b
Code starting with the faulting instruction ===========================================
0: 0f 0b ud2
2: be fe ff ff ff mov $0xfffffffe,%esi
7: eb 14 jmp 0x1d
9: be fe ff ff ff mov $0xfffffffe,%esi
e: 89 f8 mov %edi,%eax
10: e8 70 da da ff call 0xffffffffffdada85
15: 8b .byte 0x8b
[ 5.504411][ T1] EAX: 00000000 EBX: c3095d8c ECX: 00000000 EDX: 00000000
[ 5.506084][ T1] ESI: c35f2608 EDI: c01dd42c EBP: c0245c1c ESP: c0245c08
[ 5.507830][ T1] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 EFLAGS: 00010282
[ 5.509606][ T1] CR0: 80050033 CR2: ffd97000 CR3: 0386e000 CR4: 000406d0
[ 5.511412][ T1] Call Trace:
[ 5.512419][ T1] driver_remove_file (sysfs/file.c:515 linux/sysfs.h:780 base/driver.c:126)
[ 5.513635][ T1] bus_remove_driver (base/bus.c:830)
[ 5.514785][ T1] driver_unregister (base/driver.c:202)
[ 5.515927][ T1] brcmfmac_module_init (base/platform.c:1005 net/wireless/broadcom/brcm80211/brcmfmac/common.c:580)
[ 5.517104][ T1] __initstub__kmod_brcmfmac__510_591_brcmfmac_module_init6 (net/wireless/broadcom/brcm80211/brcmfmac/common.c:591)
[ 5.519013][ T1] do_one_initcall (main.c:1357)
[ 5.520164][ T1] ? __initstub__kmod_ath6kl_sdio__508_1430_ath6kl_sdio_driver_init6 (usercopy_32.c:?)
[ 5.522289][ T1] ? __lock_acquire (locking/lockdep.c:4718)
[ 5.523491][ T1] ? __lock_acquire (locking/lockdep.c:4718)
[ 5.525180][ T1] ? lock_acquire (locking/lockdep.c:5942)
[ 5.526824][ T1] ? __lock_acquire (locking/lockdep.c:4718)
[ 5.530956][ T1] ? __lock_acquire (locking/lockdep.c:4718)
[ 5.532755][ T1] ? lock_acquire (locking/lockdep.c:5942)
[ 5.534332][ T1] ? lock_acquire (locking/lockdep.c:5942)
[ 5.536001][ T1] ? __this_cpu_preempt_check (smp_processor_id.c:64)
[ 5.537894][ T1] ? __this_cpu_preempt_check (smp_processor_id.c:64)
[ 5.539914][ T1] ? ktime_get (time/timekeeping.c:1002)
[ 5.541408][ T1] ? ktime_get (time/timekeeping.c:1002)
[ 5.542911][ T1] ? ktime_get (time/timekeeping.c:321 time/timekeeping.c:482 time/timekeeping.c:1004)
[ 5.544554][ T1] ? clockevents_program_event (time/clockevents.c:372)
[ 5.546602][ T1] ? irqentry_exit (linux/irq-entry-common.h:507)
[ 5.548377][ T1] ? __this_cpu_preempt_check (smp_processor_id.c:64)
[ 5.550315][ T1] ? lockdep_hardirqs_on (locking/lockdep.c:4516)
[ 5.552128][ T1] ? irqentry_exit (linux/irq-entry-common.h:507)
[ 5.553774][ T1] ? sysvec_apic_timer_interrupt (x86/kernel/apic/apic.c:1062)
[ 5.559179][ T1] ? trace_hardirqs_on (trace/trace_preemptirq.c:79)
[ 5.560942][ T1] ? vmware_sched_clock (vmware.c:?)
[ 5.562784][ T1] ? irqentry_exit (linux/irq-entry-common.h:507)
[ 5.564594][ T1] ? vmware_sched_clock (vmware.c:?)
[ 5.566492][ T1] ? sysvec_apic_timer_interrupt (x86/kernel/apic/apic.c:1062)
[ 5.568555][ T1] ? handle_exception (x86/entry/entry_32.S:1044)
[ 5.570285][ T1] ? parameq (params.c:98)
[ 5.571797][ T1] ? next_arg (cmdline.c:283)
[ 5.573381][ T1] ? parameq (linux/fortify-string.h:218 params.c:99)
[ 5.574711][ T1] ? parse_args (params.c:153)
[ 5.579714][ T1] do_initcall_level (main.c:1419)
[ 5.581382][ T1] do_initcalls (main.c:1435)
[ 5.582841][ T1] ? rest_init (main.c:?)
[ 5.584478][ T1] do_basic_setup (main.c:1455)
[ 5.586016][ T1] kernel_init_freeable (main.c:1670)
[ 5.587875][ T1] ? rest_init (main.c:?)
[ 5.589472][ T1] kernel_init (main.c:1560)
[ 5.590987][ T1] ret_from_fork (x86/kernel/process.c:158)
[ 5.592643][ T1] ? rest_init (main.c:?)
[ 5.594157][ T1] ret_from_fork_asm (x86/entry/entry_32.S:736)
[ 5.595882][ T1] entry_INT80_32 (x86/entry/entry_32.S:940)
[ 5.597546][ T1] irq event stamp: 90237
[ 5.598888][ T1] hardirqs last enabled at (90251): __console_unlock (printk/printk.c:347)
[ 5.600980][ T1] hardirqs last disabled at (90266): __console_unlock (printk/printk.c:345)
[ 5.603033][ T1] softirqs last enabled at (90070): __do_softirq (softirq.c:679)
[ 5.604968][ T1] softirqs last disabled at (90061): __do_softirq (softirq.c:679)
[ 5.606947][ T1] ---[ end trace 0000000000000000 ]---
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20260922/202609221423.71fce5fb-lkp@intel.com
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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2026-09-22 7:23 [soc:board-remove-7.3] [net] 8d91a5ecce: EIP:kernfs_remove_by_name_ns kernel test robot
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