From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi2-f1.google.com (mail-oi2-f1.google.com [74.125.231.193]) (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 480A31F4631 for ; Fri, 21 Aug 2026 21:02:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.231.193 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787346168; cv=none; b=jVIVPJU5LOMyNO/E+rLU+x8EAqhE0k+rfTouDC1pYJwfoOdUExWlrfTNYOxy+sQUVgp2jwwzGwamKiY5KT+V4MQeiLYkgJWRSGrgMIxn9oABZPGb1MpFMgvDwBkBDbv9JlXUI3uoG2YHWBuH8RUyNJDnjUBZ4fWUffcGfYlX9Gk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787346168; c=relaxed/simple; bh=DMlZ1Njee3nENwYQkjFZmXgbUZOPmlkbDpMZehjc3uY=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=PuRoLwzr937RglBnrG0krePwsyke2pZ3yAsR0Dm0sibDgJBzwyr5EQpKeAywiNMdAryh5md5VWAidUnOpKmyC6do0jFzpxTta6uAat13pfJw2aXflDDZ0L1uqKY1qDQZfE3UGXL50gjyb9uboe7Znb8uXOpOCY6YsXzX7JoerFQ= 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=74.125.231.193 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-oi2-f1.google.com with SMTP id 5614622812f47-4960a23d5e1so561546b6e.1 for ; Fri, 21 Aug 2026 14:02:47 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1787346166; x=1787950966; h=content-type:to:from:subject:message-id:in-reply-to:date :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to:content-type; bh=Qx2O44ZYXcXU3XKrRNTOR7UWQo6XeJleD2RdLgyaXds=; b=S4LuES6ozMVV6vku5LqYreGPdNwZ6MLDJiimo/fhZj8XmN/zpCOOCkv21L7JkS66/F l6igzfSNTBdA5zwUq8qMsOu2qoRyOEU8t/MobG94KyQH/7p/EzYGGKGB7d/axU3EWcti aV0MoDNnmMcFRyLiXzxRqb+STEYNck3Uro5rrhPD0F7mOux0/vSTRH9Te7HtksoD+uqo mses4d0tZs/yInIXhLXWq4MliUbbbxtoepw7SopAdRZ4mGvxXkzpz3v4x4fBbZZ+7byq m76kl/AjYfRwbTln9hkN66n9ZDE2Q9aYyo35VNExmVsNb0TLewHDMVVJER/+mcb/ux5f JkQQ== X-Forwarded-Encrypted: i=1; AHgh+RrU1GeAeyNSiwvthGE5PODMY8rihzZH+YpEDGWoaNPKFAD0Eo8AH13XmRQvLq8zOj9Nl8EtbxFAX2id+d0=@vger.kernel.org X-Gm-Message-State: AOJu0Yyh/rBIN4EclqWpO5hN2tuvqN9+tiloDIn+8r5Y9QL3FRDUyK34 I7rQGjvw6+7XkRFj4m2hHPwQvhKV2+FHHloOJRSSa4tpcuYV9l1VtDPDqqJM1HcmQ6AcrEoN0Id qX+vuPepxHsMFGqkv6DS8C1CgxK2vpUikpIYR6whaC8ZIxYm5BLjZWdgYW4o= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:150f:b0:495:f85b:38c0 with SMTP id 5614622812f47-4b309b0ed12mr1891748b6e.12.1787346166208; Fri, 21 Aug 2026 14:02:46 -0700 (PDT) Date: Fri, 21 Aug 2026 14:02:46 -0700 In-Reply-To: <6a82bc54.10853dc7.22f513.001b.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a88bcf6.dbb3a75c.13dd47.001f.GAE@google.com> Subject: Re: [syzbot] [ide?] Internal error in ata_sff_freeze From: syzbot To: cassel@kernel.org, dlemoal@kernel.org, linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" syzbot has found a reproducer for the following issue on: HEAD commit: 818bebeb63dd drm/xe: Don't hand out the flat CCS storage a.. git tree: https://kernel.googlesource.com/pub/scm/linux/kernel/git/torvalds/linux master console output: https://syzkaller.appspot.com/x/log.txt?x=139f8415580000 kernel config: https://syzkaller.appspot.com/x/.config?x=c2050ae6a504f163 dashboard link: https://syzkaller.appspot.com/bug?extid=891c7b195b408052e519 compiler: aarch64-linux-gnu-gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44 userspace arch: arm64 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10021549580000 Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/fa3fbcfdac58/non_bootable_disk-818bebeb.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/6059523242a9/vmlinux-818bebeb.xz kernel image: https://storage.googleapis.com/syzbot-assets/b5c6a1cf5025/Image-818bebeb.gz.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+891c7b195b408052e519@syzkaller.appspotmail.com EXT4-fs (vda): shut down requested (2) Aborting journal on device vda-8. Internal error: synchronous external abort: 0000000096000050 [#1] SMP Modules linked in: CPU: 1 UID: 0 PID: 3667 Comm: syz.2.17 Tainted: G M syzkaller #0 PREEMPT Tainted: [M]=MACHINE_CHECK Hardware name: linux,dummy-virt (DT) pstate: 414020c9 (nZcv daIF +PAN -UAO -TCO +DIT -SSBS BTYPE=--) pc : __raw_writeb arch/arm64/include/asm/io.h:29 [inline] pc : writeb include/asm-generic/io.h:265 [inline] pc : iowrite8 include/asm-generic/io.h:924 [inline] pc : ata_sff_set_devctl drivers/ata/libata-sff.c:233 [inline] pc : ata_sff_freeze+0x7c/0x90 drivers/ata/libata-sff.c:1616 lr : __ata_port_freeze drivers/ata/libata-eh.c:1124 [inline] lr : ata_eh_freeze_port+0x34/0x5c drivers/ata/libata-eh.c:1167 sp : ffff800089dab960 x29: ffff800089dab960 x28: f2f00000061cb300 x27: 0000000000000000 x26: 0000000000000001 x25: ffff800081f4bcc0 x24: ffff80008279aa48 x23: 0000000000000000 x22: 0000000000000000 x21: f0f0000013e58000 x20: 0000000000000000 x19: f0f0000013e58000 x18: 00000000ffffffff x17: 0000000000000000 x16: 0000000000000000 x15: f0f0000013e5a3f6 x14: 0000000000000000 x13: 0000000000067000 x12: 0000000000004308 x11: fff000000314a808 x10: ffff800082ea0000 x9 : 0000000000000000 x8 : fbf0000003ff2000 x7 : ffffc1ffc00ffc40 x6 : ffffc1ffc00ffc40 x5 : 0000100000000000 x4 : 01ffdc0000000000 x3 : ffff800082d46be8 x2 : 0000000000000000 x1 : 000000000000000a x0 : ffff800083f55002 Call trace: writeb include/asm-generic/io.h:264 [inline] (P) iowrite8 include/asm-generic/io.h:924 [inline] (P) ata_sff_set_devctl drivers/ata/libata-sff.c:233 [inline] (P) ata_sff_freeze+0x7c/0x90 drivers/ata/libata-sff.c:1616 (P) __ata_port_freeze drivers/ata/libata-eh.c:1124 [inline] ata_eh_freeze_port+0x34/0x5c drivers/ata/libata-eh.c:1167 ata_host_start+0x13c/0x228 drivers/ata/libata-core.c:6110 ata_pci_sff_activate_host+0x50/0x340 drivers/ata/libata-sff.c:2285 ata_pci_init_one+0x19c/0x1d4 drivers/ata/libata-sff.c:2412 ata_pci_bmdma_init_one+0x14/0x20 drivers/ata/libata-sff.c:3180 ata_generic_init_one+0xc4/0x1ac drivers/ata/ata_generic.c:209 local_pci_probe+0x40/0xa8 drivers/pci/pci-driver.c:332 pci_call_probe drivers/pci/pci-driver.c:394 [inline] __pci_device_probe drivers/pci/pci-driver.c:455 [inline] pci_device_probe+0xd8/0x288 drivers/pci/pci-driver.c:489 call_driver_probe drivers/base/dd.c:628 [inline] really_probe+0xbc/0x2bc drivers/base/dd.c:706 __driver_probe_device+0x11c/0x184 drivers/base/dd.c:868 device_driver_attach+0x48/0xac drivers/base/dd.c:1203 bind_store+0x7c/0xd8 drivers/base/bus.c:267 drv_attr_store+0x24/0x40 drivers/base/bus.c:125 sysfs_kf_write+0x7c/0x98 fs/sysfs/file.c:145 kernfs_fop_write_iter+0x138/0x200 fs/kernfs/file.c:345 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x244/0x36c fs/read_write.c:687 ksys_write+0x70/0x108 fs/read_write.c:739 __do_sys_write fs/read_write.c:750 [inline] __se_sys_write fs/read_write.c:747 [inline] __arm64_sys_write+0x18/0x24 fs/read_write.c:747 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x54/0x10c arch/arm64/kernel/syscall.c:49 el0_svc_common.constprop.0+0x40/0xe0 arch/arm64/kernel/syscall.c:121 do_el0_svc+0x1c/0x34 arch/arm64/kernel/syscall.c:140 el0_svc+0x38/0x1fc arch/arm64/kernel/entry-common.c:758 el0t_64_sync_handler+0xa0/0xe4 arch/arm64/kernel/entry-common.c:777 el0t_64_sync+0x1a4/0x1a8 arch/arm64/kernel/entry.S:590 Code: d65f03c0 f9404800 b4fffe60 d50332bf (39000001) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: d65f03c0 ret 4: f9404800 ldr x0, [x0, #144] 8: b4fffe60 cbz x0, 0xffffffffffffffd4 c: d50332bf dmb oshst * 10: 39000001 strb w1, [x0] <-- trapping instruction --- 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.