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2002:a05:6820:4d07:b0:6ae:4959:e1c4 with SMTP id 006d021491bc7-6ae96ed3e38mr5421908eaf.23.1785969877263; Wed, 05 Aug 2026 15:44:37 -0700 (PDT) Date: Wed, 05 Aug 2026 15:44:37 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a73bcd5.01d0871a.3a0d52.0003.GAE@google.com> Subject: [syzbot] [intel-gfx?] general protection fault in i915_pci_probe From: syzbot To: airlied@gmail.com, dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, jani.nikula@linux.intel.com, joonas.lahtinen@linux.intel.com, linux-kernel@vger.kernel.org, rodrigo.vivi@intel.com, simona@ffwll.ch, syzkaller-bugs@googlegroups.com, tursulin@ursulin.net 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=13245bb9580000 kernel config: https://syzkaller.appspot.com/x/.config?x=145fa60d73086782 dashboard link: https://syzkaller.appspot.com/bug?extid=db96c5ff032f4292a8dc 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=101513b9580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17245bb9580000 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+db96c5ff032f4292a8dc@syzkaller.appspotmail.com e1000e 0000:00:02.0 eth1: removed PHC e1000e 0000:00:02.0 eth1: NIC Link is Down Oops: general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f] CPU: 2 UID: 0 PID: 5932 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:i915_pci_probe+0x57/0x480 drivers/gpu/drm/i915/i915_pci.c:961 Code: 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 f6 03 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 6c 24 18 4c 8d 6d 1c 4c 89 ea 48 c1 ea 03 <0f> b6 04 02 4c 89 ea 83 e2 07 38 d0 7f 08 84 c0 0f 85 86 03 00 00 RSP: 0018:ffffc900016bf9a0 EFLAGS: 00010207 RAX: dffffc0000000000 RBX: ffff888023150000 RCX: 0000000000000000 RDX: 0000000000000003 RSI: ffffffff85d8d20d RDI: ffffffff8c43a498 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff8c43a480 R13: 000000000000001c R14: ffffffff85d8d1f0 R15: ffff888023150130 FS: 0000555583377500(0000) GS:ffff8880d5fd8000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff49e597e9c CR3: 0000000023b2c000 CR4: 0000000000352ef0 Call Trace: 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: 0033:0x7f246059e019 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:00007ffe32b38f68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f2460825fa0 RCX: 00007f246059e019 RDX: 000000000000000d RSI: 0000200000000180 RDI: 0000000000000005 RBP: 00007f246063500c R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f2460825fac R14: 00007f2460825fa0 R15: 00007f2460825fa0 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:i915_pci_probe+0x57/0x480 drivers/gpu/drm/i915/i915_pci.c:961 Code: 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 f6 03 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 6c 24 18 4c 8d 6d 1c 4c 89 ea 48 c1 ea 03 <0f> b6 04 02 4c 89 ea 83 e2 07 38 d0 7f 08 84 c0 0f 85 86 03 00 00 RSP: 0018:ffffc900016bf9a0 EFLAGS: 00010207 RAX: dffffc0000000000 RBX: ffff888023150000 RCX: 0000000000000000 RDX: 0000000000000003 RSI: ffffffff85d8d20d RDI: ffffffff8c43a498 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff8c43a480 R13: 000000000000001c R14: ffffffff85d8d1f0 R15: ffff888023150130 FS: 0000555583377500(0000) GS:ffff8880d5fd8000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff49e597e9c CR3: 0000000023b2c000 CR4: 0000000000352ef0 ---------------- Code disassembly (best guess): 0: 89 fa mov %edi,%edx 2: 48 c1 ea 03 shr $0x3,%rdx 6: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) a: 0f 85 f6 03 00 00 jne 0x406 10: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 17: fc ff df 1a: 49 8b 6c 24 18 mov 0x18(%r12),%rbp 1f: 4c 8d 6d 1c lea 0x1c(%rbp),%r13 23: 4c 89 ea mov %r13,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax <-- trapping instruction 2e: 4c 89 ea mov %r13,%rdx 31: 83 e2 07 and $0x7,%edx 34: 38 d0 cmp %dl,%al 36: 7f 08 jg 0x40 38: 84 c0 test %al,%al 3a: 0f 85 86 03 00 00 jne 0x3c6 --- 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