Hello,
kernel test robot noticed "WARNING:at_fs/sysfs/file.c:#sysfs_emit" on:
commit: 74191212ddb1a82ed54ddd75fcd820f3df79abef ("[PATCH] ACPI / sysfs: Replace deprecated and unsafe functions with sysfs_emit")
url: https://github.com/intel-lab-lkp/linux/commits/Brahmajit-Das/ACPI-sysfs-Replace-deprecated-and-unsafe-functions-with-sysfs_emit/20250624-213919
base: https://git.kernel.org/cgit/linux/kernel/git/rafael/linux-pm.git linux-next
patch link: https://lore.kernel.org/all/20250624133739.25215-1-listout@xxxxxxxxxxx/
patch subject: [PATCH] ACPI / sysfs: Replace deprecated and unsafe functions with sysfs_emit
in testcase: boot
config: x86_64-rhel-9.4
compiler: gcc-12
test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G
(please refer to attached dmesg/kmsg for entire log/backtrace)
+----------------------------------------+------------+------------+
| | 3cd1e195f0 | 74191212dd |
+----------------------------------------+------------+------------+
| WARNING:at_fs/sysfs/file.c:#sysfs_emit | 0 | 18 |
| RIP:sysfs_emit | 0 | 18 |
+----------------------------------------+------------+------------+
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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-lkp/202506261036.895ef959-lkp@xxxxxxxxx
[ 0.410439][ T1] ------------[ cut here ]------------
[ 0.410995][ T1] invalid sysfs_emit: buf:(____ptrval____)
[ 0.411411][ T1] WARNING: CPU: 0 PID: 1 at fs/sysfs/file.c:767 sysfs_emit (fs/sysfs/file.c:767)
[ 0.412230][ T1] Modules linked in:
[ 0.412660][ T1] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.16.0-rc3-00031-g74191212ddb1 #1 VOLUNTARY
[ 0.413504][ T1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[ 0.414499][ T1] RIP: 0010:sysfs_emit (fs/sysfs/file.c:767)
[ 0.415012][ T1] Code: 10 e8 d5 8e b4 00 48 8b 54 24 18 65 48 2b 15 40 f5 69 02 75 1b c9 e9 d0 7c b6 00 48 89 fe 48 c7 c7 d9 be b6 ae e8 71 86 b3 ff <0f> 0b 31 c0 eb d6 e8 a6 88 b5 00 66 66 2e 0f 1f 84 00 00 00 00 00
All code
========
0: 10 e8 adc %ch,%al
2: d5 (bad)
3: 8e b4 00 48 8b 54 24 mov 0x24548b48(%rax,%rax,1),%?
a: 18 65 48 sbb %ah,0x48(%rbp)
d: 2b 15 40 f5 69 02 sub 0x269f540(%rip),%edx # 0x269f553
13: 75 1b jne 0x30
15: c9 leave
16: e9 d0 7c b6 00 jmp 0xb67ceb
1b: 48 89 fe mov %rdi,%rsi
1e: 48 c7 c7 d9 be b6 ae mov $0xffffffffaeb6bed9,%rdi
25: e8 71 86 b3 ff call 0xffffffffffb3869b
2a:* 0f 0b ud2 <-- trapping instruction
2c: 31 c0 xor %eax,%eax
2e: eb d6 jmp 0x6
30: e8 a6 88 b5 00 call 0xb588db
35: 66 66 2e 0f 1f 84 00 data16 cs nopw 0x0(%rax,%rax,1)
3c: 00 00 00 00
Code starting with the faulting instruction
===========================================
0: 0f 0b ud2
2: 31 c0 xor %eax,%eax
4: eb d6 jmp 0xffffffffffffffdc
6: e8 a6 88 b5 00 call 0xb588b1
b: 66 66 2e 0f 1f 84 00 data16 cs nopw 0x0(%rax,%rax,1)
12: 00 00 00 00
[ 0.415674][ T1] RSP: 0000:ffffcdc1c0013cb8 EFLAGS: 00010282
[ 0.416230][ T1] RAX: 0000000000000000 RBX: 0000000000000000 RCX: c0000000ffff7fff
[ 0.417231][ T1] RDX: 0000000000000000 RSI: 00000000ffff7fff RDI: ffffffffaee63ba0
[ 0.418233][ T1] RBP: ffffcdc1c0013d08 R08: 0000000000000000 R09: 0000000000000003
[ 0.419233][ T1] R10: ffffcdc1c0013b58 R11: ffffffffaf1e3be8 R12: ffff8c28408940a0
[ 0.420232][ T1] R13: ffffffffadb37cd0 R14: 00000000000004e5 R15: 0000000000000000
[ 0.421234][ T1] FS: 0000000000000000(0000) GS:ffff8c2bbfdce000(0000) knlGS:0000000000000000
[ 0.422237][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 0.423179][ T1] CR2: ffff8c2b7ffff000 CR3: 000000010f024000 CR4: 00000000000406f0
[ 0.423631][ T1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 0.424609][ T1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 0.425613][ T1] Call Trace:
[ 0.426168][ T1] <TASK>
[ 0.426431][ T1] acpi_irq_stats_init (drivers/acpi/sysfs.c:887)
[ 0.427234][ T1] ? acpi_os_signal_semaphore (drivers/acpi/osl.c:1320)
[ 0.428079][ T1] ? acpi_ut_release_mutex (drivers/acpi/acpica/utmutex.c:329)
[ 0.428478][ T1] acpi_os_install_interrupt_handler (drivers/acpi/osl.c:568)
[ 0.429235][ T1] ? __pfx_acpi_init (drivers/acpi/bus.c:1440)
[ 0.429990][ T1] acpi_ev_install_xrupt_handlers (drivers/acpi/acpica/evevent.c:95)
[ 0.430500][ T1] ? __pfx_acpi_init (drivers/acpi/bus.c:1440)
[ 0.431233][ T1] acpi_bus_init (drivers/acpi/bus.c:1362)
[ 0.431971][ T1] ? acpi_ut_release_mutex (drivers/acpi/acpica/utmutex.c:329)
[ 0.432485][ T1] ? acpi_install_address_space_handler_internal+0x64/0xb0
[ 0.433605][ T1] ? __pfx_acpi_init (drivers/acpi/bus.c:1440)
[ 0.434234][ T1] ? __pfx_acpi_init (drivers/acpi/bus.c:1440)
[ 0.434989][ T1] acpi_init (drivers/acpi/bus.c:1456)
[ 0.435382][ T1] ? __pfx_scan_for_dmi_ipmi (drivers/char/ipmi/ipmi_dmi.c:215)
[ 0.435948][ T1] ? __pfx_acpi_init (drivers/acpi/bus.c:1440)
[ 0.436380][ T1] do_one_initcall (init/main.c:1274)
[ 0.436875][ T1] do_initcalls (init/main.c:1335 init/main.c:1352)
[ 0.437233][ T1] kernel_init_freeable (init/main.c:1588)
[ 0.437770][ T1] ? __pfx_kernel_init (init/main.c:1466)
[ 0.438231][ T1] kernel_init (init/main.c:1476)
[ 0.438714][ T1] ret_from_fork (arch/x86/kernel/process.c:154)
[ 0.439203][ T1] ? __pfx_kernel_init (init/main.c:1466)
[ 0.439386][ T1] ret_from_fork_asm (arch/x86/entry/entry_64.S:258)
[ 0.439885][ T1] </TASK>
[ 0.440230][ T1] ---[ end trace 0000000000000000 ]---
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20250626/202506261036.895ef959-lkp@xxxxxxxxx
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
