From: kernel test robot <oliver.sang@intel.com>
To: Kuen-Han Tsai <khtsai@google.com>
Cc: <oe-lkp@lists.linux.dev>, <lkp@intel.com>,
<linux-kernel@vger.kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
<linux-usb@vger.kernel.org>, <oliver.sang@intel.com>
Subject: [linus:master] [usb] 56a512a9b4: Oops:general_protection_fault,probably_for_non-canonical_address#:#[##]SMP_KASAN
Date: Wed, 18 Feb 2026 17:10:59 +0800 [thread overview]
Message-ID: <202602181727.fd76c561-lkp@intel.com> (raw)
Hello,
kernel test robot noticed "Oops:general_protection_fault,probably_for_non-canonical_address#:#[##]SMP_KASAN" on:
commit: 56a512a9b4107079f68701e7d55da8507eb963d9 ("usb: gadget: f_ncm: align net_device lifecycle with bind/unbind")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
in testcase: boot
config: x86_64-randconfig-002-20260217
compiler: clang-20
test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 32G
(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/202602181727.fd76c561-lkp@intel.com
[ 8.960483][ T1] usb usb1: SerialNumber: dummy_hcd.0
[ 8.962200][ T1] hub 1-0:1.0: USB hub found
[ 8.963048][ T1] hub 1-0:1.0: 1 port detected
[ 8.967283][ T1] file system registered
[ 8.968024][ T1] udc dummy_udc.0: binding gadget driver [g_ncm]
[ 8.968851][ T1] Oops: general protection fault, probably for non-canonical address 0xdffffc00000001a3: 0000 [#1] SMP KASAN
[ 8.970049][ T1] KASAN: null-ptr-deref in range [0x0000000000000d18-0x0000000000000d1f]
[ 8.970973][ T1] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Tainted: G T 6.19.0-rc3-00025-g56a512a9b410 #1 PREEMPTLAZY
[ 8.971938][ T1] Tainted: [T]=RANDSTRUCT
[ 8.971938][ T1] RIP: 0010:gether_set_qmult (kbuild/src/consumer/drivers/usb/gadget/function/u_ether.c:988)
[ 8.971938][ T1] Code: 00 00 f3 0f 1e fa 0f 1f 44 00 00 55 48 89 e5 41 56 53 48 81 c7 18 0d 00 00 48 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 75 07 89 37 5b 41 5e 5d c3 89 f9 80 e1 07 80 c1
All code
========
0: 00 00 add %al,(%rax)
2: f3 0f 1e fa endbr64
6: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
b: 55 push %rbp
c: 48 89 e5 mov %rsp,%rbp
f: 41 56 push %r14
11: 53 push %rbx
12: 48 81 c7 18 0d 00 00 add $0xd18,%rdi
19: 48 89 f8 mov %rdi,%rax
1c: 48 c1 e8 03 shr $0x3,%rax
20: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx
27: fc ff df
2a:* 0f b6 04 08 movzbl (%rax,%rcx,1),%eax <-- trapping instruction
2e: 84 c0 test %al,%al
30: 75 07 jne 0x39
32: 89 37 mov %esi,(%rdi)
34: 5b pop %rbx
35: 41 5e pop %r14
37: 5d pop %rbp
38: c3 ret
39: 89 f9 mov %edi,%ecx
3b: 80 e1 07 and $0x7,%cl
3e: 80 .byte 0x80
3f: c1 .byte 0xc1
Code starting with the faulting instruction
===========================================
0: 0f b6 04 08 movzbl (%rax,%rcx,1),%eax
4: 84 c0 test %al,%al
6: 75 07 jne 0xf
8: 89 37 mov %esi,(%rdi)
a: 5b pop %rbx
b: 41 5e pop %r14
d: 5d pop %rbp
e: c3 ret
f: 89 f9 mov %edi,%ecx
11: 80 e1 07 and $0x7,%cl
14: 80 .byte 0x80
15: c1 .byte 0xc1
[ 8.971938][ T1] RSP: 0018:ffff8881009df660 EFLAGS: 00010206
[ 8.971938][ T1] RAX: 00000000000001a3 RBX: ffff8881020fd400 RCX: dffffc0000000000
[ 8.971938][ T1] RDX: 0000000000000001 RSI: 0000000000000005 RDI: 0000000000000d18
[ 8.971938][ T1] RBP: ffff8881009df670 R08: ffff8881009df5ef R09: 1ffff1102013bebd
[ 8.971938][ T1] R10: dffffc0000000000 R11: ffffed102013bebe R12: dffffc0000000000
[ 8.971938][ T1] R13: 1ffff11020105216 R14: ffff8881296b4c00 R15: ffff8881008290b0
[ 8.971938][ T1] FS: 0000000000000000(0000) GS:ffff88879974e000(0000) knlGS:0000000000000000
[ 8.971938][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8.971938][ T1] CR2: 00007f70208af0ac CR3: 0000000004a7c000 CR4: 00000000000406f0
[ 8.971938][ T1] Call Trace:
[ 8.971938][ T1] <TASK>
[ 8.971938][ T1] gncm_bind (kbuild/src/consumer/drivers/usb/gadget/legacy/ncm.c:140)
[ 8.971938][ T1] ? gadget_bind_driver (kbuild/src/consumer/drivers/usb/gadget/udc/core.c:1629 (discriminator 1024))
[ 8.971938][ T1] composite_bind (kbuild/src/consumer/drivers/usb/gadget/composite.c:2553)
[ 8.971938][ T1] ? suspended_show (kbuild/src/consumer/drivers/usb/gadget/composite.c:2529)
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20260218/202602181727.fd76c561-lkp@intel.com
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
reply other threads:[~2026-02-18 9:11 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=202602181727.fd76c561-lkp@intel.com \
--to=oliver.sang@intel.com \
--cc=gregkh@linuxfoundation.org \
--cc=khtsai@google.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-usb@vger.kernel.org \
--cc=lkp@intel.com \
--cc=oe-lkp@lists.linux.dev \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.