[Intel-wired-lan] [syzbot] [intel-wired-lan?] BUG: unable to handle kernel paging request in e1000_get_variants_82571

syzbot <[email protected]> Thu, 06 Aug 2026 08:36:37 -0700
Newsgroups	org.osuosl.intel-wired-lan,org.kernel.vger.linux-kernel,org.kernel.vger.netdev
Message-ID	<[email protected]>
Hello,

syzbot found the following issue on:

HEAD commit:    848acc8ffe1b Merge tag 'fsverity-for-linus' of git://git.k..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=15ae93b9580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=145fa60d73086782
dashboard link: https://syzkaller.appspot.com/bug?extid=0ddf1022b4d5c391c09b
compiler:       gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=178b7649580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=117c6cc6580000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/32c9dc084aaa/disk-848acc8f.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/b7604244b0a9/vmlinux-848acc8f.xz
kernel image: https://storage.googleapis.com/syzbot-assets/4cd321f6fe47/bzImage-848acc8f.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: [email protected]

e1000e 0000:00:03.0: Interrupt Throttling Rate (ints/sec) set to dynamic conservative mode
e1000e 0000:00:03.0 0000:00:03.0 (uninitialized): Failed to initialize MSI interrupts.  Falling back to legacy interrupts.
BUG: unable to handle page fault for address: ffffc900035b4b58
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 13fe5c067 P4D 13fe5c067 PUD 1cae3067 PMD 22725067 PTE 0
Oops: Oops: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 10 Comm: kworker/0:1 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
Workqueue: sync_wq local_pci_probe_callback
RIP: 0010:readl arch/x86/include/asm/io.h:59 [inline]
RIP: 0010:__er32 drivers/net/ethernet/intel/e1000e/e1000.h:604 [inline]
RIP: 0010:e1000_init_mac_params_82571 drivers/net/ethernet/intel/e1000e/82571.c:278 [inline]
RIP: 0010:e1000_get_variants_82571+0xe08/0x1c30 drivers/net/ethernet/intel/e1000e/82571.c:320
Code: f6 ff ff e8 da 1f 0f fb 4c 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 f7 0b 00 00 49 8b 87 00 07 00 00 <8b> a8 58 5b 00 00 89 e8 31 ff 83 e0 02 89 c6 89 44 24 10 e8 10 1a
RSP: 0018:ffffc900000f7a00 EFLAGS: 00010246
RAX: ffffc900035af000 RBX: ffff88807ed91694 RCX: ffffffff86fb44f8
RDX: 1ffff1100fdb22b8 RSI: ffffffff86fb4506 RDI: ffff88801eaa2540
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff9200001ef45
R13: ffff88807ed915c0 R14: ffff88807ed915b8 R15: ffff88807ed90ec0
FS:  0000000000000000(0000) GS:ffff888123dd8000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc900035b4b58 CR3: 0000000073af9000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 e1000_probe+0x1123/0x36b0 drivers/net/ethernet/intel/e1000e/netdev.c:7494
 local_pci_probe+0xdd/0x1b0 drivers/pci/pci-driver.c:332
 local_pci_probe_callback+0x35/0x80 drivers/pci/pci-driver.c:361
 process_one_work+0xa23/0x1940 kernel/workqueue.c:3322
 process_scheduled_works kernel/workqueue.c:3405 [inline]
 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3486
 kthread+0x370/0x450 kernel/kthread.c:436
 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
CR2: ffffc900035b4b58
---[ end trace 0000000000000000 ]---
RIP: 0010:readl arch/x86/include/asm/io.h:59 [inline]
RIP: 0010:__er32 drivers/net/ethernet/intel/e1000e/e1000.h:604 [inline]
RIP: 0010:e1000_init_mac_params_82571 drivers/net/ethernet/intel/e1000e/82571.c:278 [inline]
RIP: 0010:e1000_get_variants_82571+0xe08/0x1c30 drivers/net/ethernet/intel/e1000e/82571.c:320
Code: f6 ff ff e8 da 1f 0f fb 4c 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 f7 0b 00 00 49 8b 87 00 07 00 00 <8b> a8 58 5b 00 00 89 e8 31 ff 83 e0 02 89 c6 89 44 24 10 e8 10 1a
RSP: 0018:ffffc900000f7a00 EFLAGS: 00010246
RAX: ffffc900035af000 RBX: ffff88807ed91694 RCX: ffffffff86fb44f8
RDX: 1ffff1100fdb22b8 RSI: ffffffff86fb4506 RDI: ffff88801eaa2540
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff9200001ef45
R13: ffff88807ed915c0 R14: ffff88807ed915b8 R15: ffff88807ed90ec0
FS:  0000000000000000(0000) GS:ffff888123dd8000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc900035b4b58 CR3: 0000000073af9000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	f6 ff                	idiv   %bh
   2:	ff                   	ljmp   (bad)
   3:	e8 da 1f 0f fb       	call   0xfb0f1fe2
   8:	4c 89 ea             	mov    %r13,%rdx
   b:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  12:	fc ff df
  15:	48 c1 ea 03          	shr    $0x3,%rdx
  19:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1d:	0f 85 f7 0b 00 00    	jne    0xc1a
  23:	49 8b 87 00 07 00 00 	mov    0x700(%r15),%rax
* 2a:	8b a8 58 5b 00 00    	mov    0x5b58(%rax),%ebp <-- trapping instruction
  30:	89 e8                	mov    %ebp,%eax
  32:	31 ff                	xor    %edi,%edi
  34:	83 e0 02             	and    $0x2,%eax
  37:	89 c6                	mov    %eax,%esi
  39:	89 44 24 10          	mov    %eax,0x10(%rsp)
  3d:	e8                   	.byte 0xe8
  3e:	10 1a                	adc    %bl,(%rdx)


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