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AKwUvBxhIhTFQp2X9rCvC19ZR3RxkztkjTXXS9mZZIWkCdM7gsoZrrDoMdy3/RnIXbU5aCEFLdDCSeFESafS5Ec=@vger.kernel.org X-Gm-Message-State: AFuF++l2NK9kRXXnknFGAzkKijWbjgwV4bqzD8o7UN4/+hD06GOtoqrQ 9/8lzNnmR39PjTX2oX38QcMW8KThVXWUC93FxsT61j67XFWPwsZG7xd2qznnLwe5eT4OTOYf5Sg gTd2YxkM7AdR0v8Vv9skiNuDWadqRkAykcJScFEYtBg9hYGh+ITFtQkc+Trg= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:2221:b0:6b3:752a:53c9 with SMTP id 006d021491bc7-6ca9a63c6ffmr3350107eaf.2.1789760684868; Fri, 18 Sep 2026 12:44:44 -0700 (PDT) Date: Fri, 18 Sep 2026 12:44:44 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6aad94ac.87c06881.1db2b3.0023.GAE@google.com> Subject: [syzbot] [kernel?] WARNING in iounmap From: syzbot To: bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com, linux-kernel@vger.kernel.org, luto@kernel.org, mingo@redhat.com, peterz@infradead.org, syzkaller-bugs@googlegroups.com, tglx@kernel.org, x86@kernel.org Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 704340f1cd0d Merge tag 'x86_urgent_for_7.3-rc4' of git://g.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=13727a99580000 kernel config: https://syzkaller.appspot.com/x/.config?x=8c5c3949d762a91f dashboard link: https://syzkaller.appspot.com/bug?extid=ca1ef9e2e234b8d3599b 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=110f305e580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=118f88c9580000 Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/d900f083ada3/non_bootable_disk-704340f1.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/e02afc1c5927/vmlinux-704340f1.xz kernel image: https://storage.googleapis.com/syzbot-assets/09cb4a8b3309/bzImage-704340f1.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+ca1ef9e2e234b8d3599b@syzkaller.appspotmail.com e1000 0000:00:01.0 (unnamed net_device) (uninitialized): Unknown MAC Type ------------[ cut here ]------------ !is_ioremap_addr((void __force *)addr) WARNING: arch/x86/mm/ioremap.c:460 at iounmap+0x64/0x240 arch/x86/mm/ioremap.c:460, CPU#2: syz.0.17/5914 Modules linked in: CPU: 2 UID: 0 PID: 5914 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:iounmap+0x64/0x240 arch/x86/mm/ioremap.c:460 Code: df 48 89 ee e8 fd 3c 51 00 48 39 eb 72 16 e8 13 43 51 00 eb 28 cc cc cc 49 bc 00 00 00 00 00 00 32 00 eb 23 e8 fd 42 51 00 90 <0f> 0b 90 e8 f4 42 51 00 5b 5d 41 5c 41 5d c3 cc cc cc cc 49 bc 00 RSP: 0018:ffffc90003ebf7d0 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff88802403cb00 RSI: ffffffff81bada13 RDI: ffff88802403cb00 RBP: ffffc90000000000 R08: 0000000000000006 R09: 0000000000000000 R10: ffffc90000000000 R11: 0000000000000001 R12: ffff888057315430 R13: ffff88802322a0d0 R14: ffff88802322a03e R15: ffff888057314000 FS: 0000555593d27500(0000) GS:ffff8880d5d59000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000002dbb65fc090 CR3: 0000000036b28000 CR4: 0000000000352ef0 Call Trace: e1000_probe+0x1400/0x2cf0 drivers/net/ethernet/intel/e1000/e1000_main.c:1230 local_pci_probe+0xdd/0x1b0 drivers/pci/pci-driver.c:354 pci_call_probe+0x176/0x800 drivers/pci/pci-driver.c:416 __pci_device_probe drivers/pci/pci-driver.c:478 [inline] pci_device_probe+0x25b/0x400 drivers/pci/pci-driver.c:512 call_driver_probe drivers/base/dd.c:628 [inline] really_probe+0x241/0xa60 drivers/base/dd.c:706 __driver_probe_device+0x210/0x460 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+0x6af/0x1050 fs/read_write.c:687 ksys_write+0x12a/0x250 fs/read_write.c:739 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f534839e159 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:00007ffc4dfb30e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f5348625fa0 RCX: 00007f534839e159 RDX: 000000000000000d RSI: 0000200000000800 RDI: 0000000000000007 RBP: 00007f534843503b R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f5348625fac R14: 00007f5348625fa0 R15: 00007f5348625fa0 --- 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