From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f79.google.com (mail-io1-f79.google.com [209.85.166.79]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 817791ACEDC for ; Sun, 30 Mar 2025 10:15:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.79 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1743329731; cv=none; b=jmvWe19e+8VOkMhy7jHDv85hgoTdHqcr5szu5/FSKRrn7GECh+BsEACRlYnUxXNoJw40DNfsfrA4tZgYFtpUHHWslJONZQ66hyga/+1oJhHdbJNijp8zlM5g1VsOLMrK3jPVEUA4/or1p644OivVY824VkcrQ+Umc+NSdjw9VpM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1743329731; c=relaxed/simple; bh=99wkWhy/lCj+tv6LO2+FpffBuhc7Ut3csLcyTV8mNB8=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=syq+D1W4vuMnQOfZ+och/OdgYbEFkyYw8+RZyDGyQtIsAvzILxPJ6OS4oM6aZIz31Q1EaEofppVkNQXcd8CBrAxz/aNIuP4w0pV97JHYHgn7H8deQUUFiiFpnFKExzZoYJ08AO30Ga/+jp2B0sjFi0jv/suUJ6+QJeZv79bKP1E= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.79 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-io1-f79.google.com with SMTP id ca18e2360f4ac-851a991cf8bso388379239f.0 for ; Sun, 30 Mar 2025 03:15:29 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1743329728; x=1743934528; h=content-transfer-encoding:to:from:subject:message-id:date :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=aRIumUmVALlisx7HIVaILs9tTAYP+kvXPJggT6KTe0s=; b=mh7nLXF8dzNKF3mP3xr8l3eexZfzjfYXLaj9XXuycx6RUwsrvaEBKygkGKUpwDNYrf CRkxoSXtbhvHItGm+tMDH+/wBIcmnghsq3YdYuRhbuYWw0RLNgxTkqGwxHwwkmLE6P8Y Dp6fdvbplAg4CA+8JyZ55CuS9Cj5RQlx3yY477RyV/LmUik2+Gh1jog4gb3zDLFSvEpb FL55FzAwkhS7dsvXJtMdG/IMtr7rMdl2RygNGLrhD3Rr+lgU+PQ8y1emKuFerd+gLgof wwSc1WmJO50Whn5i6IkHrW7wQ58HwxKBZ7ch5iUF8f5igyEyTMUlBZkOEmgxplRemcSw OPjA== X-Forwarded-Encrypted: i=1; AJvYcCUVu9Ns+8h5QZBj/O9OfqHDMEsv2cJ0gG7XyNznO7fBAEcxsnBzhTQhSisYnfTi3fEuTL47xbJ0A0U=@vger.kernel.org X-Gm-Message-State: AOJu0Yy/tPm8QNHVAORprH/94AWaLiIsvpNQEPPiobGnsaIG2AWUeD4f K8wg7DL9bJ+G4UN10IRkmolqtS6RugbXmTvH00CjB+QxBARtBhK6iAtArDuZH+9qZa5XYZtEs85 Ulx/9MWh5kUkWb/DsxI0NxTq0mJhRVhHFvmZEh+6IehQzHP6tlGa3fF4= X-Google-Smtp-Source: AGHT+IECRGMTHDljt+iYwo556tAb9d1HTBmp0TKRaLg8/NmttQiOqh9bw+A9IV5PX3xA+yuzvvLKt674te7Us9JR9Ls3QnAoZrmM Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:4401:20b0:3d5:890b:d9e1 with SMTP id e9e14a558f8ab-3d5e08bced1mr34573115ab.1.1743329728138; Sun, 30 Mar 2025 03:15:28 -0700 (PDT) Date: Sun, 30 Mar 2025 03:15:28 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <67e919c0.050a0220.1547ec.00a1.GAE@google.com> Subject: [syzbot] [pci?] upstream test error: general protection fault in msix_prepare_msi_desc From: syzbot To: bhelgaas@google.com, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hello, syzbot found the following issue on: HEAD commit: f6e0150b2003 Merge tag 'mtd/for-6.15' of git://git.kernel..= . git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=3D12bf5804580000 kernel config: https://syzkaller.appspot.com/x/.config?x=3D4444a7da3861fcf= 5 dashboard link: https://syzkaller.appspot.com/bug?extid=3D8423775fd52d4cc7e= 5c9 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Deb= ian) 2.40 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/9113c1eac62e/disk-= f6e0150b.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/f1dd0f2f5338/vmlinux-= f6e0150b.xz kernel image: https://storage.googleapis.com/syzbot-assets/b275479ad610/bzI= mage-f6e0150b.xz IMPORTANT: if you fix the issue, please add the following tag to the commit= : Reported-by: syzbot+8423775fd52d4cc7e5c9@syzkaller.appspotmail.com ntfs3: Enabled Linux POSIX ACLs support ntfs3: Read-only LZX/Xpress compression included efs: 1.0a - http://aeschi.ch.eu.org/efs/ jffs2: version 2.2. (NAND) (SUMMARY) =C2=A9 2001-2006 Red Hat, Inc. romfs: ROMFS MTD (C) 2007 Red Hat, Inc. QNX4 filesystem 0.2.3 registered. qnx6: QNX6 filesystem 1.0.0 registered. fuse: init (API version 7.42) orangefs_debugfs_init: called with debug mask: :none: :0: orangefs_init: module version upstream loaded JFS: nTxBlock =3D 8192, nTxLock =3D 65536 SGI XFS with ACLs, security attributes, realtime, quota, no debug enabled 9p: Installing v9fs 9p2000 file system support NILFS version 2 loaded befs: version: 0.9.3 ocfs2: Registered cluster interface o2cb ocfs2: Registered cluster interface user OCFS2 User DLM kernel interface loaded gfs2: GFS2 installed ceph: loaded (mds proto 32) NET: Registered PF_ALG protocol family xor: automatically using best checksumming function avx =20 async_tx: api initialized (async) Key type asymmetric registered Asymmetric key parser 'x509' registered Asymmetric key parser 'pkcs8' registered Key type pkcs7_test registered Block layer SCSI generic (bsg) driver version 0.4 loaded (major 238) io scheduler mq-deadline registered io scheduler kyber registered io scheduler bfq registered input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input0 ACPI: button: Power Button [PWRF] input: Sleep Button as /devices/LNXSYSTM:00/LNXSLPBN:00/input/input1 ACPI: button: Sleep Button [SLPF] ioatdma: Intel(R) QuickData Technology Driver 5.00 ACPI: \_SB_.LNKC: Enabled at IRQ 11 virtio-pci 0000:00:03.0: virtio_pci: leaving for legacy driver ACPI: \_SB_.LNKD: Enabled at IRQ 10 virtio-pci 0000:00:04.0: virtio_pci: leaving for legacy driver ACPI: \_SB_.LNKB: Enabled at IRQ 10 virtio-pci 0000:00:06.0: virtio_pci: leaving for legacy driver virtio-pci 0000:00:07.0: virtio_pci: leaving for legacy driver N_HDLC line discipline registered with maxframe=3D4096 Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled 00:03: ttyS0 at I/O 0x3f8 (irq =3D 4, base_baud =3D 115200) is a 16550A 00:04: ttyS1 at I/O 0x2f8 (irq =3D 3, base_baud =3D 115200) is a 16550A 00:05: ttyS2 at I/O 0x3e8 (irq =3D 6, base_baud =3D 115200) is a 16550A 00:06: ttyS3 at I/O 0x2e8 (irq =3D 7, base_baud =3D 115200) is a 16550A Non-volatile memory driver v1.3 Oops: general protection fault, probably for non-canonical address 0xdffffc= 0000000000: 0000 [#1] SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.14.0-syzkaller-03565-gf6= e0150b2003 #0 PREEMPT(full)=20 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Goo= gle 02/12/2025 RIP: 0010:msix_prepare_msi_desc+0x18a/0x310 drivers/pci/msi/msi.c:615 Code: 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 7f 01 00 00 4c 89 = ea 4c 89 63 60 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 04 02 84 c= 0 74 08 3c 03 0f 8e fd 00 00 00 41 8b 6d 00 31 ff RSP: 0000:ffffc900000674f8 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffffc90000067588 RCX: ffffffff8501ef7f RDX: 0000000000000000 RSI: ffffffff8501eb05 RDI: ffffc900000675e8 RBP: ffff888021efe000 R08: 0000000000000004 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000002ba3 R12: ffffc9000008e008 R13: 0000000000000000 R14: 0000000000000002 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff888124e5a000(0000) knlGS:000000000000000= 0 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff88823ffff000 CR3: 000000000df82000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: msix_setup_msi_descs+0x19c/0x260 drivers/pci/msi/msi.c:639 __msix_setup_interrupts drivers/pci/msi/msi.c:672 [inline] msix_setup_interrupts drivers/pci/msi/msi.c:701 [inline] msix_capability_init drivers/pci/msi/msi.c:743 [inline] __pci_enable_msix_range+0x90f/0x1150 drivers/pci/msi/msi.c:851 pci_alloc_irq_vectors_affinity+0x238/0x2a0 drivers/pci/msi/api.c:268 vp_request_msix_vectors drivers/virtio/virtio_pci_common.c:160 [inline] vp_find_vqs_msix+0x423/0xea0 drivers/virtio/virtio_pci_common.c:417 vp_find_vqs+0x96/0x7a0 drivers/virtio/virtio_pci_common.c:525 virtio_find_vqs include/linux/virtio_config.h:226 [inline] virtio_find_single_vq include/linux/virtio_config.h:237 [inline] probe_common+0x324/0x700 drivers/char/hw_random/virtio-rng.c:155 virtio_dev_probe+0x586/0x8a0 drivers/virtio/virtio.c:341 call_driver_probe drivers/base/dd.c:579 [inline] really_probe+0x23e/0xa90 drivers/base/dd.c:658 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:800 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:830 __driver_attach+0x283/0x580 drivers/base/dd.c:1216 bus_for_each_dev+0x13b/0x1d0 drivers/base/bus.c:370 bus_add_driver+0x2e9/0x690 drivers/base/bus.c:678 driver_register+0x15c/0x4b0 drivers/base/driver.c:249 do_one_initcall+0x120/0x6e0 init/main.c:1257 do_initcall_level init/main.c:1319 [inline] do_initcalls init/main.c:1335 [inline] do_basic_setup init/main.c:1354 [inline] kernel_init_freeable+0x5c2/0x900 init/main.c:1567 kernel_init+0x1c/0x2b0 init/main.c:1457 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:msix_prepare_msi_desc+0x18a/0x310 drivers/pci/msi/msi.c:615 Code: 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 7f 01 00 00 4c 89 = ea 4c 89 63 60 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 04 02 84 c= 0 74 08 3c 03 0f 8e fd 00 00 00 41 8b 6d 00 31 ff RSP: 0000:ffffc900000674f8 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffffc90000067588 RCX: ffffffff8501ef7f RDX: 0000000000000000 RSI: ffffffff8501eb05 RDI: ffffc900000675e8 RBP: ffff888021efe000 R08: 0000000000000004 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000002ba3 R12: ffffc9000008e008 R13: 0000000000000000 R14: 0000000000000002 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff888124f5a000(0000) knlGS:000000000000000= 0 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000000df82000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 3 bytes skipped: 0: df 48 89 fisttps -0x77(%rax) 3: fa cli 4: 48 c1 ea 03 shr $0x3,%rdx 8: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) c: 0f 85 7f 01 00 00 jne 0x191 12: 4c 89 ea mov %r13,%rdx 15: 4c 89 63 60 mov %r12,0x60(%rbx) 19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 20: fc ff df 23: 48 c1 ea 03 shr $0x3,%rdx * 27: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax <-- trapping instruct= ion 2b: 84 c0 test %al,%al 2d: 74 08 je 0x37 2f: 3c 03 cmp $0x3,%al 31: 0f 8e fd 00 00 00 jle 0x134 37: 41 8b 6d 00 mov 0x0(%r13),%ebp 3b: 31 ff xor %edi,%edi --- 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 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