syzbot
BUG: unable to handle kernel paging request in e1000_get_cfg_done_82571
Status:
upstream: reported C repro on 2026/08/06 15:37
Subsystems:
intel-wired-lan
Labels:
prio:high
[Documentation on labels]
Reported-by: syzbot+8ce4dba751e79facdc38@syzkaller.appspotmail.com
First crash: 16d, last: 3d13h
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✨ AI Patch Versions (2)
Sample crash report:
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.
e1000e 0000:00:03.0: The NVM Checksum Is Not Valid
BUG: unable to handle page fault for address: ffffc9000392e0b0
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 1c000067 P4D 1c000067 PUD 1d6a8067 PMD 269d7067 PTE 0
Oops: Oops: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5964 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
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_get_cfg_done_82571+0x68/0x150 drivers/net/ethernet/intel/e1000e/82571.c:850
Code: 00 00 ba 02 00 00 00 e8 c6 60 c5 04 31 ff 89 ee e8 5d 79 10 fb 85 ed 74 4e e8 e4 7e 10 fb 41 80 7d 00 00 75 5e 49 8b 44 24 08 <8b> 98 10 10 00 00 81 e3 00 00 04 00 31 ff 89 de e8 33 79 10 fb 85
RSP: 0018:ffffc9000653f850 EFLAGS: 00010246
RAX: ffffc9000392d0a0 RBX: ffff88803a4615b8 RCX: ffffffff86ffdb0d
RDX: ffff88802edf4a80 RSI: ffffffff86f9f4bc RDI: ffff88803a4615b8
RBP: 0000000000000064 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88803a4615b8
R13: ffffed100748c2b8 R14: ffff88803a4615c0 R15: 1ffff92000ca7f25
FS: 000055555c433500(0000) GS:ffff8880d5bde000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc9000392e0b0 CR3: 00000000360b5000 CR4: 0000000000352ef0
Call Trace:
<TASK>
e1000e_phy_hw_reset_generic+0x1f2/0x260 drivers/net/ethernet/intel/e1000e/phy.c:2167
e1000_phy_hw_reset drivers/net/ethernet/intel/e1000e/e1000.h:542 [inline]
e1000_probe+0x2446/0x36b0 drivers/net/ethernet/intel/e1000e/netdev.c:7725
local_pci_probe+0xdd/0x1b0 drivers/pci/pci-driver.c:332
pci_call_probe+0x176/0x800 drivers/pci/pci-driver.c:394
__pci_device_probe drivers/pci/pci-driver.c:455 [inline]
pci_device_probe+0x1cd/0x370 drivers/pci/pci-driver.c:489
call_driver_probe drivers/base/dd.c:628 [inline]
really_probe+0x241/0xa60 drivers/base/dd.c:706
__driver_probe_device+0x20e/0x450 drivers/base/dd.c:868
device_driver_attach+0xd1/0x220 drivers/base/dd.c:1203
bind_store+0xf4/0x190 drivers/base/bus.c:267
drv_attr_store+0x74/0xb0 drivers/base/bus.c:125
sysfs_kf_write+0xf2/0x150 fs/sysfs/file.c:145
kernfs_fop_write_iter+0x3e0/0x5f0 fs/kernfs/file.c:345
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x6ac/0x1050 fs/read_write.c:687
ksys_write+0x12a/0x250 fs/read_write.c:739
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f937d59e0d9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffccb71ee08 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f937d825fa0 RCX: 00007f937d59e0d9
RDX: 000000000000000d RSI: 0000200000000240 RDI: 0000000000000005
RBP: 00007f937d635024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f937d825fac R14: 00007f937d825fa0 R15: 00007f937d825fa0
</TASK>
Modules linked in:
CR2: ffffc9000392e0b0
---[ 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_get_cfg_done_82571+0x68/0x150 drivers/net/ethernet/intel/e1000e/82571.c:850
Code: 00 00 ba 02 00 00 00 e8 c6 60 c5 04 31 ff 89 ee e8 5d 79 10 fb 85 ed 74 4e e8 e4 7e 10 fb 41 80 7d 00 00 75 5e 49 8b 44 24 08 <8b> 98 10 10 00 00 81 e3 00 00 04 00 31 ff 89 de e8 33 79 10 fb 85
RSP: 0018:ffffc9000653f850 EFLAGS: 00010246
RAX: ffffc9000392d0a0 RBX: ffff88803a4615b8 RCX: ffffffff86ffdb0d
RDX: ffff88802edf4a80 RSI: ffffffff86f9f4bc RDI: ffff88803a4615b8
RBP: 0000000000000064 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88803a4615b8
R13: ffffed100748c2b8 R14: ffff88803a4615c0 R15: 1ffff92000ca7f25
FS: 000055555c433500(0000) GS:ffff8880d5bde000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc9000392e0b0 CR3: 00000000360b5000 CR4: 0000000000352ef0
----------------
Code disassembly (best guess):
0: 00 00 add %al,(%rax)
2: ba 02 00 00 00 mov $0x2,%edx
7: e8 c6 60 c5 04 call 0x4c560d2
c: 31 ff xor %edi,%edi
e: 89 ee mov %ebp,%esi
10: e8 5d 79 10 fb call 0xfb107972
15: 85 ed test %ebp,%ebp
17: 74 4e je 0x67
19: e8 e4 7e 10 fb call 0xfb107f02
1e: 41 80 7d 00 00 cmpb $0x0,0x0(%r13)
23: 75 5e jne 0x83
25: 49 8b 44 24 08 mov 0x8(%r12),%rax
* 2a: 8b 98 10 10 00 00 mov 0x1010(%rax),%ebx <-- trapping instruction
30: 81 e3 00 00 04 00 and $0x40000,%ebx
36: 31 ff xor %edi,%edi
38: 89 de mov %ebx,%esi
3a: e8 33 79 10 fb call 0xfb107972
3f: 85 .byte 0x85
* Struck through repros no longer work on HEAD.