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AKwUvBwQnRPGLOYaJ+V4m7is5J0idpS2u03iaXD15GCmtFErWkZboNvTKSWMjDr4BcDEozAi7n1MPdwYPI2716E=@vger.kernel.org X-Gm-Message-State: AFuF++ly7t9I5ox7iB19oU/VA5X4apx1rMlmhzpW2WE8p3S/88hsT8RY OKKYYcOzUFay6SeomPemkU7tk7Egld8XrEsSzAhMpzDrt+HJvIi9m2MzA7apihHs7cUH0DGOxf1 g2pTDuIWaVAmvN6k7Ym60yemA9Jm9OR8uhjtvirJX8FgQaKzoFs8aT13fkIE= 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:f036:b0:6b1:b68e:5109 with SMTP id 006d021491bc7-6b6fe59cdf5mr17762393eaf.33.1788905325930; Tue, 08 Sep 2026 15:08:45 -0700 (PDT) Date: Tue, 08 Sep 2026 15:08:45 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6aa0876d.f81106d8.285f0a.0003.GAE@google.com> Subject: [syzbot] [usb-storage?] BUG: unable to handle kernel NULL pointer dereference in usb_stor_invoke_transport (2) From: syzbot To: gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, stern@rowland.harvard.edu, syzkaller-bugs@googlegroups.com, usb-storage@lists.one-eyed-alien.net Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 28924df2a08f Merge tag 'perf-tools-fixes-for-v7.3-2026-09-.. git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=16145749580000 kernel config: https://syzkaller.appspot.com/x/.config?x=5e4e3a0e188a497e dashboard link: https://syzkaller.appspot.com/bug?extid=356ae236154297f0d60d compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14bf2a15580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15023b9e580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/dbb658780e3f/disk-28924df2.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/ed954d86e83d/vmlinux-28924df2.xz kernel image: https://storage.googleapis.com/syzbot-assets/56cc5fdb5ce4/bzImage-28924df2.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+356ae236154297f0d60d@syzkaller.appspotmail.com BUG: kernel NULL pointer dereference, address: 0000000000000000 #PF: supervisor instruction fetch in kernel mode #PF: error_code(0x0010) - not-present page PGD 80000000733dc067 P4D 80000000733dc067 PUD 7324b067 PMD 0 Oops: Oops: 0010 [#1] SMP KASAN PTI CPU: 0 UID: 0 PID: 5644 Comm: usb-storage Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:0x0 Code: Unable to access opcode bytes at 0xffffffffffffffd6. RSP: 0018:ffffc90003997af8 EFLAGS: 00010246 RAX: 1ffff1100f2c69f0 RBX: ffff888073cbd110 RCX: ffffffff9a9de501 RDX: 0000000000000001 RSI: ffffffff8e474d50 RDI: ffff888079634e90 RBP: ffffc90003997cd0 R08: ffffffff907a1e7f R09: 1ffffffff20f43cf R10: dffffc0000000000 R11: 0000000000000000 R12: 1ffff1100f2c680e R13: 1ffff92000732f74 R14: ffff888079634e90 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff888124cd6000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 00000000729a6000 CR4: 00000000003526f0 Call Trace: usb_stor_invoke_transport+0x55a/0x1a40 drivers/usb/storage/transport.c:926 usb_stor_control_thread+0x44c/0x8f0 drivers/usb/storage/usb.c:462 kthread+0x38b/0x480 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CR2: 0000000000000000 ---[ end trace 0000000000000000 ]--- RIP: 0010:0x0 Code: Unable to access opcode bytes at 0xffffffffffffffd6. RSP: 0018:ffffc90003997af8 EFLAGS: 00010246 RAX: 1ffff1100f2c69f0 RBX: ffff888073cbd110 RCX: ffffffff9a9de501 RDX: 0000000000000001 RSI: ffffffff8e474d50 RDI: ffff888079634e90 RBP: ffffc90003997cd0 R08: ffffffff907a1e7f R09: 1ffffffff20f43cf R10: dffffc0000000000 R11: 0000000000000000 R12: 1ffff1100f2c680e R13: 1ffff92000732f74 R14: ffff888079634e90 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff888124cd6000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 00000000729a6000 CR4: 00000000003526f0 --- 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. 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