[v6.6] BUG: unable to handle kernel paging request in e1000_get_variants_82571
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syzbot
Aug 4, 2026, 7:24:31 PM (2 days ago) Aug 4
to syzkaller...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: aa0e49877a2e Linux 6.6.148
git tree: linux-6.6.y
console output: https://syzkaller.appspot.com/x/log.txt?x=15ec93b9580000
kernel config: https://syzkaller.appspot.com/x/.config?x=f0bc3d90c30838b5
dashboard link: https://syzkaller.appspot.com/bug?extid=d94ebee48e324ce9e837
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/f83b390cfc1f/disk-aa0e4987.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/1d4bdb338edd/vmlinux-aa0e4987.xz
kernel image: https://storage.googleapis.com/syzbot-assets/3f57c1d51ee3/bzImage-aa0e4987.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+d94ebe...@syzkaller.appspotmail.com
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: ffffc9000425eb58
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 17c00067 P4D 17c00067 PUD 19e4a067 PMD 22c67067 PTE 0
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 5821 Comm: kworker/0:4 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Workqueue: events work_for_cpu_fn
RIP: 0010:readl arch/x86/include/asm/io.h:58 [inline]
RIP: 0010:__er32 drivers/net/ethernet/intel/e1000e/e1000.h:601 [inline]
RIP: 0010:e1000_init_mac_params_82571 drivers/net/ethernet/intel/e1000e/82571.c:278 [inline]
RIP: 0010:e1000_get_variants_82571+0x5fa/0x1bd0 drivers/net/ethernet/intel/e1000e/82571.c:320
Code: fe e8 fa f9 a8 fb 41 83 ff 02 73 64 4c 8b 64 24 38 43 80 3c 2c 00 4c 8d b3 80 06 00 00 74 08 4c 89 f7 e8 99 78 01 fc 49 8b 06 <44> 8b b8 58 5b 00 00 44 89 fe 83 e6 02 31 ff e8 c2 f9 a8 fb 44 89
RSP: 0018:ffffc90004a17900 EFLAGS: 00010246
RAX: ffffc90004259000 RBX: ffff88802d5d8d00 RCX: 0000000000000000
RDX: ffff88802ebe9e00 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffc90004a179f0 R08: ffff88802ebe9e00 R09: 0000000000000003
R10: 0000000000000004 R11: 0000000000000000 R12: 1ffff11005abb270
R13: dffffc0000000000 R14: ffff88802d5d9380 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc9000425eb58 CR3: 0000000030fa4000 CR4: 00000000003506f0
Call Trace:
<TASK>
e1000_probe+0xb43/0x2990 drivers/net/ethernet/intel/e1000e/netdev.c:7479
local_pci_probe+0xc9/0x150 drivers/pci/pci-driver.c:324
work_for_cpu_fn+0x54/0x80 kernel/workqueue.c:5704
process_one_work kernel/workqueue.c:2657 [inline]
process_scheduled_works+0xa60/0x1600 kernel/workqueue.c:2734
worker_thread+0xa5e/0xfe0 kernel/workqueue.c:2815
kthread+0x2fa/0x390 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
</TASK>
Modules linked in:
Dumping ftrace buffer:
(ftrace buffer empty)
CR2: ffffc9000425eb58
---[ end trace 0000000000000000 ]---
RIP: 0010:readl arch/x86/include/asm/io.h:58 [inline]
RIP: 0010:__er32 drivers/net/ethernet/intel/e1000e/e1000.h:601 [inline]
RIP: 0010:e1000_init_mac_params_82571 drivers/net/ethernet/intel/e1000e/82571.c:278 [inline]
RIP: 0010:e1000_get_variants_82571+0x5fa/0x1bd0 drivers/net/ethernet/intel/e1000e/82571.c:320
Code: fe e8 fa f9 a8 fb 41 83 ff 02 73 64 4c 8b 64 24 38 43 80 3c 2c 00 4c 8d b3 80 06 00 00 74 08 4c 89 f7 e8 99 78 01 fc 49 8b 06 <44> 8b b8 58 5b 00 00 44 89 fe 83 e6 02 31 ff e8 c2 f9 a8 fb 44 89
RSP: 0018:ffffc90004a17900 EFLAGS: 00010246
RAX: ffffc90004259000 RBX: ffff88802d5d8d00 RCX: 0000000000000000
RDX: ffff88802ebe9e00 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffc90004a179f0 R08: ffff88802ebe9e00 R09: 0000000000000003
R10: 0000000000000004 R11: 0000000000000000 R12: 1ffff11005abb270
R13: dffffc0000000000 R14: ffff88802d5d9380 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc9000425eb58 CR3: 0000000030fa4000 CR4: 00000000003506f0
----------------
Code disassembly (best guess), 1 bytes skipped:
0: e8 fa f9 a8 fb call 0xfba8f9ff
5: 41 83 ff 02 cmp $0x2,%r15d
9: 73 64 jae 0x6f
b: 4c 8b 64 24 38 mov 0x38(%rsp),%r12
10: 43 80 3c 2c 00 cmpb $0x0,(%r12,%r13,1)
15: 4c 8d b3 80 06 00 00 lea 0x680(%rbx),%r14
1c: 74 08 je 0x26
1e: 4c 89 f7 mov %r14,%rdi
21: e8 99 78 01 fc call 0xfc0178bf
26: 49 8b 06 mov (%r14),%rax
* 29: 44 8b b8 58 5b 00 00 mov 0x5b58(%rax),%r15d <-- trapping instruction
30: 44 89 fe mov %r15d,%esi
33: 83 e6 02 and $0x2,%esi
36: 31 ff xor %edi,%edi
38: e8 c2 f9 a8 fb call 0xfba8f9ff
3d: 44 rex.R
3e: 89 .byte 0x89
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title
If you want to overwrite report's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)
If the report is a duplicate of another one, reply with:
#syz dup: exact-subject-of-another-report
If you want to undo deduplication, reply with:
#syz undup
syzbot found the following issue on:
HEAD commit: aa0e49877a2e Linux 6.6.148
git tree: linux-6.6.y
console output: https://syzkaller.appspot.com/x/log.txt?x=15ec93b9580000
kernel config: https://syzkaller.appspot.com/x/.config?x=f0bc3d90c30838b5
dashboard link: https://syzkaller.appspot.com/bug?extid=d94ebee48e324ce9e837
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/f83b390cfc1f/disk-aa0e4987.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/1d4bdb338edd/vmlinux-aa0e4987.xz
kernel image: https://storage.googleapis.com/syzbot-assets/3f57c1d51ee3/bzImage-aa0e4987.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+d94ebe...@syzkaller.appspotmail.com
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: ffffc9000425eb58
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 17c00067 P4D 17c00067 PUD 19e4a067 PMD 22c67067 PTE 0
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 5821 Comm: kworker/0:4 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Workqueue: events work_for_cpu_fn
RIP: 0010:readl arch/x86/include/asm/io.h:58 [inline]
RIP: 0010:__er32 drivers/net/ethernet/intel/e1000e/e1000.h:601 [inline]
RIP: 0010:e1000_init_mac_params_82571 drivers/net/ethernet/intel/e1000e/82571.c:278 [inline]
RIP: 0010:e1000_get_variants_82571+0x5fa/0x1bd0 drivers/net/ethernet/intel/e1000e/82571.c:320
Code: fe e8 fa f9 a8 fb 41 83 ff 02 73 64 4c 8b 64 24 38 43 80 3c 2c 00 4c 8d b3 80 06 00 00 74 08 4c 89 f7 e8 99 78 01 fc 49 8b 06 <44> 8b b8 58 5b 00 00 44 89 fe 83 e6 02 31 ff e8 c2 f9 a8 fb 44 89
RSP: 0018:ffffc90004a17900 EFLAGS: 00010246
RAX: ffffc90004259000 RBX: ffff88802d5d8d00 RCX: 0000000000000000
RDX: ffff88802ebe9e00 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffc90004a179f0 R08: ffff88802ebe9e00 R09: 0000000000000003
R10: 0000000000000004 R11: 0000000000000000 R12: 1ffff11005abb270
R13: dffffc0000000000 R14: ffff88802d5d9380 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc9000425eb58 CR3: 0000000030fa4000 CR4: 00000000003506f0
Call Trace:
<TASK>
e1000_probe+0xb43/0x2990 drivers/net/ethernet/intel/e1000e/netdev.c:7479
local_pci_probe+0xc9/0x150 drivers/pci/pci-driver.c:324
work_for_cpu_fn+0x54/0x80 kernel/workqueue.c:5704
process_one_work kernel/workqueue.c:2657 [inline]
process_scheduled_works+0xa60/0x1600 kernel/workqueue.c:2734
worker_thread+0xa5e/0xfe0 kernel/workqueue.c:2815
kthread+0x2fa/0x390 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
</TASK>
Modules linked in:
Dumping ftrace buffer:
(ftrace buffer empty)
CR2: ffffc9000425eb58
---[ end trace 0000000000000000 ]---
RIP: 0010:readl arch/x86/include/asm/io.h:58 [inline]
RIP: 0010:__er32 drivers/net/ethernet/intel/e1000e/e1000.h:601 [inline]
RIP: 0010:e1000_init_mac_params_82571 drivers/net/ethernet/intel/e1000e/82571.c:278 [inline]
RIP: 0010:e1000_get_variants_82571+0x5fa/0x1bd0 drivers/net/ethernet/intel/e1000e/82571.c:320
Code: fe e8 fa f9 a8 fb 41 83 ff 02 73 64 4c 8b 64 24 38 43 80 3c 2c 00 4c 8d b3 80 06 00 00 74 08 4c 89 f7 e8 99 78 01 fc 49 8b 06 <44> 8b b8 58 5b 00 00 44 89 fe 83 e6 02 31 ff e8 c2 f9 a8 fb 44 89
RSP: 0018:ffffc90004a17900 EFLAGS: 00010246
RAX: ffffc90004259000 RBX: ffff88802d5d8d00 RCX: 0000000000000000
RDX: ffff88802ebe9e00 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffc90004a179f0 R08: ffff88802ebe9e00 R09: 0000000000000003
R10: 0000000000000004 R11: 0000000000000000 R12: 1ffff11005abb270
R13: dffffc0000000000 R14: ffff88802d5d9380 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc9000425eb58 CR3: 0000000030fa4000 CR4: 00000000003506f0
----------------
Code disassembly (best guess), 1 bytes skipped:
0: e8 fa f9 a8 fb call 0xfba8f9ff
5: 41 83 ff 02 cmp $0x2,%r15d
9: 73 64 jae 0x6f
b: 4c 8b 64 24 38 mov 0x38(%rsp),%r12
10: 43 80 3c 2c 00 cmpb $0x0,(%r12,%r13,1)
15: 4c 8d b3 80 06 00 00 lea 0x680(%rbx),%r14
1c: 74 08 je 0x26
1e: 4c 89 f7 mov %r14,%rdi
21: e8 99 78 01 fc call 0xfc0178bf
26: 49 8b 06 mov (%r14),%rax
* 29: 44 8b b8 58 5b 00 00 mov 0x5b58(%rax),%r15d <-- trapping instruction
30: 44 89 fe mov %r15d,%esi
33: 83 e6 02 and $0x2,%esi
36: 31 ff xor %edi,%edi
38: e8 c2 f9 a8 fb call 0xfba8f9ff
3d: 44 rex.R
3e: 89 .byte 0x89
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title
If you want to overwrite report's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)
If the report is a duplicate of another one, reply with:
#syz dup: exact-subject-of-another-report
If you want to undo deduplication, reply with:
#syz undup
syzbot
Aug 4, 2026, 7:51:34 PM (2 days ago) Aug 4
to syzkaller...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: fb28aa725e05 Linux 6.1.180
syzbot found the following issue on:
git tree: linux-6.1.y
console output: https://syzkaller.appspot.com/x/log.txt?x=15197e32580000
kernel config: https://syzkaller.appspot.com/x/.config?x=31dfefc4a14efea3
dashboard link: https://syzkaller.appspot.com/bug?extid=b9a5ca23ab864b6278d1
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/9a6fe2a54d0f/disk-fb28aa72.raw.xz
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
vmlinux: https://storage.googleapis.com/syzbot-assets/742b23a1d931/vmlinux-fb28aa72.xz
kernel image: https://storage.googleapis.com/syzbot-assets/b3f257c16d2e/bzImage-fb28aa72.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
m920x_read = error: -19
dvb-usb: error while querying for an remote control event.
m920x_read = error: -19
dvb-usb: error while querying for an remote control event.
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: ffffc9000371eb58
e1000e 0000:00:03.0 0000:00:03.0 (uninitialized): Failed to initialize MSI interrupts. Falling back to legacy interrupts.
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 17400067 P4D 17400067 PUD 17622067 PMD 1f3ca067 PTE 0
#PF: error_code(0x0000) - not-present page
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 4693 Comm: kworker/0:8 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Workqueue: events work_for_cpu_fn
RIP: 0010:readl arch/x86/include/asm/io.h:61 [inline]
Workqueue: events work_for_cpu_fn
RIP: 0010:__er32 drivers/net/ethernet/intel/e1000e/e1000.h:579 [inline]
RIP: 0010:e1000_init_mac_params_82571 drivers/net/ethernet/intel/e1000e/82571.c:279 [inline]
RIP: 0010:e1000_get_variants_82571+0x5c4/0x1b00 drivers/net/ethernet/intel/e1000e/82571.c:321
Code: f6 e8 10 0b e2 fb 41 83 fe 02 73 55 48 8b 44 24 30 42 80 3c 28 00 4c 8d bb 80 06 00 00 74 08 4c 89 ff e8 4f 34 33 fc 49 8b 07 <44> 8b b0 58 5b 00 00 44 89 f6 83 e6 02 31 ff e8 d8 0a e2 fb 44 89
RSP: 0018:ffffc90003277980 EFLAGS: 00010246
RAX: ffffc90003719000 RBX: ffff888058e08c80 RCX: 0000000000000000
RDX: ffff88801bbeda00 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffc90003277a70 R08: ffff88801bbeda00 R09: 0000000000000003
R10: 0000000000000004 R11: 0000000000000000 R12: ffff888058e092f8
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888058e09300
FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc9000371eb58 CR3: 000000002cf48000 CR4: 00000000003506f0
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
e1000_probe+0xb47/0x29f0 drivers/net/ethernet/intel/e1000e/netdev.c:7474
local_pci_probe+0xc5/0x150 drivers/pci/pci-driver.c:324
work_for_cpu_fn+0x50/0x80 kernel/workqueue.c:5184
process_one_work+0x8ab/0x1160 kernel/workqueue.c:2292
worker_thread+0xaf5/0x12a0 kernel/workqueue.c:2439
kthread+0x29d/0x330 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
</TASK>
Modules linked in:
Dumping ftrace buffer:
(ftrace buffer empty)
CR2: ffffc9000371eb58
Modules linked in:
Dumping ftrace buffer:
(ftrace buffer empty)
---[ end trace 0000000000000000 ]---
RIP: 0010:readl arch/x86/include/asm/io.h:61 [inline]
RIP: 0010:__er32 drivers/net/ethernet/intel/e1000e/e1000.h:579 [inline]
RIP: 0010:e1000_init_mac_params_82571 drivers/net/ethernet/intel/e1000e/82571.c:279 [inline]
RIP: 0010:e1000_get_variants_82571+0x5c4/0x1b00 drivers/net/ethernet/intel/e1000e/82571.c:321
Code: f6 e8 10 0b e2 fb 41 83 fe 02 73 55 48 8b 44 24 30 42 80 3c 28 00 4c 8d bb 80 06 00 00 74 08 4c 89 ff e8 4f 34 33 fc 49 8b 07 <44> 8b b0 58 5b 00 00 44 89 f6 83 e6 02 31 ff e8 d8 0a e2 fb 44 89
RSP: 0018:ffffc90003277980 EFLAGS: 00010246
RAX: ffffc90003719000 RBX: ffff888058e08c80 RCX: 0000000000000000
RDX: ffff88801bbeda00 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffc90003277a70 R08: ffff88801bbeda00 R09: 0000000000000003
R10: 0000000000000004 R11: 0000000000000000 R12: ffff888058e092f8
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888058e09300
FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc9000371eb58 CR3: 000000002cf48000 CR4: 00000000003506f0
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: f6 e8 imul %al
2: 10 0b adc %cl,(%rbx)
4: e2 fb loop 0x1
6: 41 83 fe 02 cmp $0x2,%r14d
a: 73 55 jae 0x61
c: 48 8b 44 24 30 mov 0x30(%rsp),%rax
11: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1)
16: 4c 8d bb 80 06 00 00 lea 0x680(%rbx),%r15
1d: 74 08 je 0x27
1f: 4c 89 ff mov %r15,%rdi
22: e8 4f 34 33 fc call 0xfc333476
27: 49 8b 07 mov (%r15),%rax
* 2a: 44 8b b0 58 5b 00 00 mov 0x5b58(%rax),%r14d <-- trapping instruction
31: 44 89 f6 mov %r14d,%esi
34: 83 e6 02 and $0x2,%esi
37: 31 ff xor %edi,%edi
39: e8 d8 0a e2 fb call 0xfbe20b16
3e: 44 rex.R
3f: 89 .byte 0x89
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