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AHgh+RpbNbFPH14acBH/XDp0bk1FRGw4S1MB/w1JmfsNp88K5qFgWWdgViKo/lsxXT7G+1XlCh3jfoo=@vger.kernel.org X-Gm-Message-State: AOJu0Yxf4sVaQzFgpnUrG1c7L+yZx5BoAYGL8NkYdwWCylrtFfFMcduy 02ATFi5gPymz/GCHE0dbbEtkbjKZegv/JEemQxF19vSL5pxGyWlTv9pw8dNkoXVE06YsCxS67aU UzC+QFrhuW11VhTHpAWddh06XI84IiFqIQgPpd9xR5DqHYDVd4lZAF7/YvRc= Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:1927:b0:497:d371:21c8 with SMTP id 5614622812f47-4afae27b56emr10300335b6e.19.1786030596845; Thu, 06 Aug 2026 08:36:36 -0700 (PDT) Date: Thu, 06 Aug 2026 08:36:36 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a74aa04.01d0871a.3a0d52.0025.GAE@google.com> Subject: [syzbot] [intel-wired-lan?] UBSAN: shift-out-of-bounds in e100_eeprom_load From: syzbot To: andrew+netdev@lunn.ch, anthony.l.nguyen@intel.com, davem@davemloft.net, edumazet@google.com, intel-wired-lan@lists.osuosl.org, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pabeni@redhat.com, przemyslaw.kitszel@intel.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" 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=15087e32580000 kernel config: https://syzkaller.appspot.com/x/.config?x=145fa60d73086782 dashboard link: https://syzkaller.appspot.com/bug?extid=e0abb1d45ac291ebebeb 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=17ed13b9580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=162c5bb9580000 Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/d900f083ada3/non_bootable_disk-848acc8f.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/6fb497cc0c8d/vmlinux-848acc8f.xz kernel image: https://storage.googleapis.com/syzbot-assets/663ccee34982/bzImage-848acc8f.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+e0abb1d45ac291ebebeb@syzkaller.appspotmail.com e1000e 0000:00:02.0 eth1: removed PHC e1000e 0000:00:02.0 eth1: NIC Link is Down ------------[ cut here ]------------ UBSAN: shift-out-of-bounds in drivers/net/ethernet/intel/e100.c:768:21 shift exponent 65529 is too large for 32-bit type 'int' CPU: 0 UID: 0 PID: 5934 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 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120 ubsan_epilogue+0xa/0x30 lib/ubsan.c:233 __ubsan_handle_shift_out_of_bounds+0x279/0x2a0 lib/ubsan.c:494 e100_eeprom_load.cold+0x55/0x9e drivers/net/ethernet/intel/e100.c:768 e100_probe+0xd07/0x1ab0 drivers/net/ethernet/intel/e100.c:2921 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: 0033:0x7f60d819e019 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:00007ffc13c52ae8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f60d8425fa0 RCX: 00007f60d819e019 RDX: 000000000000000c RSI: 0000200000000280 RDI: 0000000000000005 RBP: 00007f60d823500c R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f60d8425fac R14: 00007f60d8425fa0 R15: 00007f60d8425fa0 ---[ end trace ]--- --- 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 syzkaller@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 syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. 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