Hello, syzbot found the following issue on: HEAD commit: f9a6bea13184 Add linux-next specific files for 20231012 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=1534d829680000 kernel config: https://syzkaller.appspot.com/x/.config?x=9e549f76cbaa1b13 dashboard link: https://syzkaller.appspot.com/bug?extid=6867a9777f4b8dc4e256 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/db1637d9c577/disk-f9a6bea1.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/16c1010b94c4/vmlinux-f9a6bea1.xz kernel image: https://storage.googleapis.com/syzbot-assets/f804f5e468c9/bzImage-f9a6bea1.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+6867a9777f4b8dc4e256@xxxxxxxxxxxxxxxxxxxxxxxxx usb usb4: New USB device strings: Mfr=3, Product=2, SerialNumber=1 usb usb4: Product: Dummy host controller usb usb4: Manufacturer: Linux 6.6.0-rc5-next-20231012-syzkaller dummy_hcd usb usb4: SerialNumber: dummy_hcd.3 hub 4-0:1.0: USB hub found hub 4-0:1.0: 1 port detected dummy_hcd dummy_hcd.4: USB Host+Gadget Emulator, driver 02 May 2005 dummy_hcd dummy_hcd.4: Dummy host controller dummy_hcd dummy_hcd.4: new USB bus registered, assigned bus number 5 usb usb5: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.06 usb usb5: New USB device strings: Mfr=3, Product=2, SerialNumber=1 usb usb5: Product: Dummy host controller usb usb5: Manufacturer: Linux 6.6.0-rc5-next-20231012-syzkaller dummy_hcd usb usb5: SerialNumber: dummy_hcd.4 hub 5-0:1.0: USB hub found hub 5-0:1.0: 1 port detected dummy_hcd dummy_hcd.5: USB Host+Gadget Emulator, driver 02 May 2005 dummy_hcd dummy_hcd.5: Dummy host controller dummy_hcd dummy_hcd.5: new USB bus registered, assigned bus number 6 usb usb6: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.06 usb usb6: New USB device strings: Mfr=3, Product=2, SerialNumber=1 usb usb6: Product: Dummy host controller usb usb6: Manufacturer: Linux 6.6.0-rc5-next-20231012-syzkaller dummy_hcd usb usb6: SerialNumber: dummy_hcd.5 hub 6-0:1.0: USB hub found hub 6-0:1.0: 1 port detected dummy_hcd dummy_hcd.6: USB Host+Gadget Emulator, driver 02 May 2005 dummy_hcd dummy_hcd.6: Dummy host controller dummy_hcd dummy_hcd.6: new USB bus registered, assigned bus number 7 usb usb7: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.06 usb usb7: New USB device strings: Mfr=3, Product=2, SerialNumber=1 usb usb7: Product: Dummy host controller usb usb7: Manufacturer: Linux 6.6.0-rc5-next-20231012-syzkaller dummy_hcd usb usb7: SerialNumber: dummy_hcd.6 hub 7-0:1.0: USB hub found hub 7-0:1.0: 1 port detected dummy_hcd dummy_hcd.7: USB Host+Gadget Emulator, driver 02 May 2005 dummy_hcd dummy_hcd.7: Dummy host controller dummy_hcd dummy_hcd.7: new USB bus registered, assigned bus number 8 usb usb8: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.06 usb usb8: New USB device strings: Mfr=3, Product=2, SerialNumber=1 usb usb8: Product: Dummy host controller usb usb8: Manufacturer: Linux 6.6.0-rc5-next-20231012-syzkaller dummy_hcd usb usb8: SerialNumber: dummy_hcd.7 hub 8-0:1.0: USB hub found hub 8-0:1.0: 1 port detected gadgetfs: USB Gadget filesystem, version 24 Aug 2004 vhci_hcd vhci_hcd.0: USB/IP Virtual Host Controller vhci_hcd vhci_hcd.0: new USB bus registered, assigned bus number 9 ================================================================== BUG: KASAN: slab-out-of-bounds in vhci_setup+0x2d3/0x340 drivers/usb/usbip/vhci_hcd.c:1145 Write of size 8 at addr ffff8881417e15c0 by task swapper/0/1 CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.6.0-rc5-next-20231012-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:364 [inline] print_report+0xc4/0x620 mm/kasan/report.c:475 kasan_report+0xda/0x110 mm/kasan/report.c:588 vhci_setup+0x2d3/0x340 drivers/usb/usbip/vhci_hcd.c:1145 usb_add_hcd+0x5bc/0x1770 drivers/usb/core/hcd.c:2911 vhci_hcd_probe+0x12c/0x460 drivers/usb/usbip/vhci_hcd.c:1363 platform_probe+0xff/0x1e0 drivers/base/platform.c:1404 call_driver_probe drivers/base/dd.c:579 [inline] really_probe+0x234/0xc90 drivers/base/dd.c:658 __driver_probe_device+0x1de/0x4b0 drivers/base/dd.c:800 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:830 __device_attach_driver+0x1d4/0x300 drivers/base/dd.c:958 bus_for_each_drv+0x157/0x1d0 drivers/base/bus.c:457 __device_attach+0x1e8/0x4b0 drivers/base/dd.c:1030 bus_probe_device+0x17c/0x1c0 drivers/base/bus.c:532 device_add+0x117e/0x1aa0 drivers/base/core.c:3625 platform_device_add+0x316/0x810 drivers/base/platform.c:716 platform_device_register_full+0x3ec/0x550 drivers/base/platform.c:844 vhci_hcd_init+0x1ad/0x360 drivers/usb/usbip/vhci_hcd.c:1532 do_one_initcall+0x128/0x670 init/main.c:1232 do_initcall_level init/main.c:1294 [inline] do_initcalls init/main.c:1310 [inline] do_basic_setup init/main.c:1329 [inline] kernel_init_freeable+0x5c2/0x900 init/main.c:1547 kernel_init+0x1c/0x2a0 init/main.c:1437 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:291 </TASK> Allocated by task 1: kasan_save_stack+0x33/0x50 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0xa2/0xb0 mm/kasan/common.c:383 kasan_kmalloc include/linux/kasan.h:198 [inline] __do_kmalloc_node mm/slab_common.c:1007 [inline] __kmalloc_node_track_caller+0x65/0x130 mm/slab_common.c:1027 kvasprintf+0xbd/0x150 lib/kasprintf.c:25 kvasprintf_const+0x66/0x190 lib/kasprintf.c:49 kobject_set_name_vargs+0x5a/0x130 lib/kobject.c:272 dev_set_name+0xc8/0x100 drivers/base/core.c:3428 usb_alloc_dev+0xb45/0xdb0 drivers/usb/core/usb.c:696 usb_add_hcd+0x3a9/0x1770 drivers/usb/core/hcd.c:2856 vhci_hcd_probe+0x12c/0x460 drivers/usb/usbip/vhci_hcd.c:1363 platform_probe+0xff/0x1e0 drivers/base/platform.c:1404 call_driver_probe drivers/base/dd.c:579 [inline] really_probe+0x234/0xc90 drivers/base/dd.c:658 __driver_probe_device+0x1de/0x4b0 drivers/base/dd.c:800 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:830 __device_attach_driver+0x1d4/0x300 drivers/base/dd.c:958 bus_for_each_drv+0x157/0x1d0 drivers/base/bus.c:457 __device_attach+0x1e8/0x4b0 drivers/base/dd.c:1030 bus_probe_device+0x17c/0x1c0 drivers/base/bus.c:532 device_add+0x117e/0x1aa0 drivers/base/core.c:3625 platform_device_add+0x316/0x810 drivers/base/platform.c:716 platform_device_register_full+0x3ec/0x550 drivers/base/platform.c:844 vhci_hcd_init+0x1ad/0x360 drivers/usb/usbip/vhci_hcd.c:1532 do_one_initcall+0x128/0x670 init/main.c:1232 do_initcall_level init/main.c:1294 [inline] do_initcalls init/main.c:1310 [inline] do_basic_setup init/main.c:1329 [inline] kernel_init_freeable+0x5c2/0x900 init/main.c:1547 kernel_init+0x1c/0x2a0 init/main.c:1437 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:291 The buggy address belongs to the object at ffff8881417e15a0 which belongs to the cache kmalloc-8 of size 8 The buggy address is located 27 bytes to the right of allocated 5-byte region [ffff8881417e15a0, ffff8881417e15a5) The buggy address belongs to the physical page: page:ffffea000505f840 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1417e1 flags: 0x57ff00000000800(slab|node=1|zone=2|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 057ff00000000800 ffff888012c41280 dead000000000122 0000000000000000 raw: 0000000000000000 0000000080660066 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 1, tgid 1 (swapper/0), ts 10541560946, free_ts 0 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x2cf/0x340 mm/page_alloc.c:1540 prep_new_page mm/page_alloc.c:1547 [inline] get_page_from_freelist+0x98f/0x32a0 mm/page_alloc.c:3339 __alloc_pages+0x1d0/0x4c0 mm/page_alloc.c:4595 alloc_pages_mpol+0x258/0x5f0 mm/mempolicy.c:2133 alloc_slab_page mm/slub.c:1870 [inline] allocate_slab+0x251/0x380 mm/slub.c:2017 new_slab mm/slub.c:2070 [inline] ___slab_alloc+0x8c7/0x1580 mm/slub.c:3223 __slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3322 __slab_alloc_node mm/slub.c:3375 [inline] slab_alloc_node mm/slub.c:3468 [inline] __kmem_cache_alloc_node+0x131/0x310 mm/slub.c:3517 __do_kmalloc_node mm/slab_common.c:1006 [inline] __kmalloc_node_track_caller+0x54/0x130 mm/slab_common.c:1027 kstrdup+0x3c/0x70 mm/util.c:62 kstrdup_const+0x5f/0x70 mm/util.c:85 kvasprintf_const+0x10b/0x190 lib/kasprintf.c:48 kobject_set_name_vargs+0x5a/0x130 lib/kobject.c:272 dev_set_name+0xc8/0x100 drivers/base/core.c:3428 netdev_register_kobject+0xc1/0x3f0 net/core/net-sysfs.c:2031 register_netdevice+0xbcb/0x1490 net/core/dev.c:10162 page_owner free stack trace missing Memory state around the buggy address: ffff8881417e1480: fc 00 fc fc fc fc 00 fc fc fc fc 00 fc fc fc fc ffff8881417e1500: 06 fc fc fc fc 05 fc fc fc fc 05 fc fc fc fc 00 >ffff8881417e1580: fc fc fc fc 05 fc fc fc fc fc fc fc fc fc fc fc ^ ffff8881417e1600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8881417e1680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ================================================================== --- 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. If the bug is already fixed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite bug's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the bug is a duplicate of another bug, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
