Hello, syzbot found the following issue on: HEAD commit: 496659003dac Merge tag 'i2c-for-6.14-rc3' of git://git.ker.. git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=11012bf8580000 kernel config: https://syzkaller.appspot.com/x/.config?x=c776e555cfbdb82d dashboard link: https://syzkaller.appspot.com/bug?extid=d7d8c418e8317899e88c compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14f7b9b0580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=155602e4580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/c1675d5fc116/disk-49665900.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/0342ce7d0bc9/vmlinux-49665900.xz kernel image: https://storage.googleapis.com/syzbot-assets/5ce5b4978fc4/bzImage-49665900.xz The issue was bisected to: commit b3e40fc85735b787ce65909619fcd173107113c2 Author: Oliver Neukum <oneukum@xxxxxxxx> Date: Thu May 2 11:51:40 2024 +0000 USB: usb_parse_endpoint: ignore reserved bits bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=11c65bf8580000 final oops: https://syzkaller.appspot.com/x/report.txt?x=13c65bf8580000 console output: https://syzkaller.appspot.com/x/log.txt?x=15c65bf8580000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+d7d8c418e8317899e88c@xxxxxxxxxxxxxxxxxxxxxxxxx Fixes: b3e40fc85735 ("USB: usb_parse_endpoint: ignore reserved bits") ------------[ cut here ]------------ strnlen: detected buffer overflow: 129 byte read of buffer size 128 WARNING: CPU: 0 PID: 9 at lib/string_helpers.c:1033 __fortify_report+0x9d/0xb0 lib/string_helpers.c:1032 Modules linked in: CPU: 0 UID: 0 PID: 9 Comm: kworker/0:1 Not tainted 6.14.0-rc2-syzkaller-00281-g496659003dac #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Workqueue: usb_hub_wq hub_event RIP: 0010:__fortify_report+0x9d/0xb0 lib/string_helpers.c:1032 Code: 84 ed 48 8b 33 48 c7 c0 a0 ae 80 8c 48 c7 c1 c0 ae 80 8c 48 0f 44 c8 48 c7 c7 20 ac 80 8c 4c 89 fa 4d 89 f0 e8 04 dd 8b fc 90 <0f> 0b 90 90 5b 41 5e 41 5f 5d c3 cc cc cc cc 0f 1f 40 00 90 90 90 RSP: 0018:ffffc900000e6b50 EFLAGS: 00010246 RAX: e8edca93825f5800 RBX: ffffffff8c80ab68 RCX: ffff88801c2f8000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffffffff81817e32 R09: fffffbfff1d3a614 R10: dffffc0000000000 R11: fffffbfff1d3a614 R12: dffffc0000000000 R13: 1ffff9200001cd84 R14: 0000000000000080 R15: 0000000000000081 FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055d6c3b85e50 CR3: 0000000078508000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> __fortify_panic+0x9/0x10 lib/string_helpers.c:1039 _Z7strnlenPKcU25pass_dynamic_object_size1m include/linux/fortify-string.h:235 [inline] _Z13sized_strscpyPcU25pass_dynamic_object_size1PKcU25pass_dynamic_object_size1m include/linux/fortify-string.h:309 [inline] ucan_probe+0x195e/0x1980 drivers/net/can/usb/ucan.c:1535 usb_probe_interface+0x641/0xbb0 drivers/usb/core/driver.c:396 really_probe+0x2b9/0xad0 drivers/base/dd.c:658 __driver_probe_device+0x1a2/0x390 drivers/base/dd.c:800 driver_probe_device+0x50/0x430 drivers/base/dd.c:830 __device_attach_driver+0x2d6/0x530 drivers/base/dd.c:958 bus_for_each_drv+0x24e/0x2e0 drivers/base/bus.c:462 __device_attach+0x333/0x520 drivers/base/dd.c:1030 bus_probe_device+0x189/0x260 drivers/base/bus.c:537 device_add+0x856/0xbf0 drivers/base/core.c:3665 usb_set_configuration+0x1976/0x1fb0 drivers/usb/core/message.c:2210 usb_generic_driver_probe+0x88/0x140 drivers/usb/core/generic.c:250 usb_probe_device+0x1b8/0x380 drivers/usb/core/driver.c:291 really_probe+0x2b9/0xad0 drivers/base/dd.c:658 __driver_probe_device+0x1a2/0x390 drivers/base/dd.c:800 driver_probe_device+0x50/0x430 drivers/base/dd.c:830 __device_attach_driver+0x2d6/0x530 drivers/base/dd.c:958 bus_for_each_drv+0x24e/0x2e0 drivers/base/bus.c:462 __device_attach+0x333/0x520 drivers/base/dd.c:1030 bus_probe_device+0x189/0x260 drivers/base/bus.c:537 device_add+0x856/0xbf0 drivers/base/core.c:3665 usb_new_device+0x104a/0x19a0 drivers/usb/core/hub.c:2652 hub_port_connect drivers/usb/core/hub.c:5523 [inline] hub_port_connect_change drivers/usb/core/hub.c:5663 [inline] port_event drivers/usb/core/hub.c:5823 [inline] hub_event+0x2d6d/0x5150 drivers/usb/core/hub.c:5905 process_one_work kernel/workqueue.c:3236 [inline] process_scheduled_works+0xabe/0x18e0 kernel/workqueue.c:3317 worker_thread+0x870/0xd30 kernel/workqueue.c:3398 kthread+0x7a9/0x920 kernel/kthread.c:464 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 </TASK> --- 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@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. For information about bisection process see: https://goo.gl/tpsmEJ#bisection 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
