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BUG: KASAN: slab-use-after-free in usb_endpoint_dir_in include/uapi/linux/usb/ch9.h:498 [inline]
BUG: KASAN: slab-use-after-free in raw_process_ep_io+0x848/0xb90 drivers/usb/gadget/legacy/raw_gadget.c:1098
Read of size 1 at addr ffff88810df44502 by task syz.2.5231/27899

CPU: 0 UID: 0 PID: 27899 Comm: syz.2.5231 Not tainted 6.12.0-rc3-syzkaller-00051-g07b887f8236e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:377 [inline]
 print_report+0xc3/0x620 mm/kasan/report.c:488
 kasan_report+0xd9/0x110 mm/kasan/report.c:601
 usb_endpoint_dir_in include/uapi/linux/usb/ch9.h:498 [inline]
 raw_process_ep_io+0x848/0xb90 drivers/usb/gadget/legacy/raw_gadget.c:1098
 raw_ioctl_ep_write drivers/usb/gadget/legacy/raw_gadget.c:1152 [inline]
 raw_ioctl+0xa4d/0x2b90 drivers/usb/gadget/legacy/raw_gadget.c:1324
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl fs/ioctl.c:893 [inline]
 __x64_sys_ioctl+0x18f/0x220 fs/ioctl.c:893
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd94a29dbfb
Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00
RSP: 002b:00007fd948ed3f70 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00000000000000ad RCX: 00007fd94a29dbfb
RDX: 00007fd948ed3ff0 RSI: 0000000040085507 RDI: 0000000000000003
RBP: 0000000000000003 R08: 00007fd94a580320 R09: 0000000000000000
R10: 0000000000000003 R11: 0000000000000246 R12: 0000000020000400
R13: 0000000000000000 R14: 00007fd94a456130 R15: 00007ffe2ad32b48
 </TASK>

Allocated by task 27899:
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
 __kasan_kmalloc+0x8f/0xa0 mm/kasan/common.c:394
 kasan_kmalloc include/linux/kasan.h:257 [inline]
 __do_kmalloc_node mm/slub.c:4264 [inline]
 __kmalloc_node_track_caller_noprof+0x1ff/0x3e0 mm/slub.c:4283
 memdup_user+0x2a/0xd0 mm/util.c:226
 raw_ioctl_ep_enable drivers/usb/gadget/legacy/raw_gadget.c:847 [inline]
 raw_ioctl+0xbc4/0x2b90 drivers/usb/gadget/legacy/raw_gadget.c:1318
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl fs/ioctl.c:893 [inline]
 __x64_sys_ioctl+0x18f/0x220 fs/ioctl.c:893
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 27897:
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:579
 poison_slab_object mm/kasan/common.c:247 [inline]
 __kasan_slab_free+0x37/0x50 mm/kasan/common.c:264
 kasan_slab_free include/linux/kasan.h:230 [inline]
 slab_free_hook mm/slub.c:2342 [inline]
 slab_free mm/slub.c:4579 [inline]
 kfree+0x130/0x480 mm/slub.c:4727
 dev_free+0x446/0x700 drivers/usb/gadget/legacy/raw_gadget.c:225
 kref_put include/linux/kref.h:65 [inline]
 raw_release+0x168/0x2b0 drivers/usb/gadget/legacy/raw_gadget.c:473
 __fput+0x3f6/0xb60 fs/file_table.c:431
 __fput_sync+0x45/0x50 fs/file_table.c:516
 __do_sys_close fs/open.c:1565 [inline]
 __se_sys_close fs/open.c:1550 [inline]
 __x64_sys_close+0x86/0x100 fs/open.c:1550
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff88810df44500
 which belongs to the cache kmalloc-16 of size 16
The buggy address is located 2 bytes inside of
 freed 16-byte region [ffff88810df44500, ffff88810df44510)

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10df44
flags: 0x200000000000000(node=0|zone=2)
page_type: f5(slab)
raw: 0200000000000000 ffff888100041640 dead000000000100 dead000000000122
raw: 0000000000000000 0000000000800080 00000001f5000000 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 0x52cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 4931, tgid 4931 (kworker/1:3), ts 2166626591565, free_ts 2166521100233
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1537
 prep_new_page mm/page_alloc.c:1545 [inline]
 get_page_from_freelist+0xd5c/0x2630 mm/page_alloc.c:3457
 __alloc_pages_noprof+0x221/0x2270 mm/page_alloc.c:4733
 alloc_pages_mpol_noprof+0xeb/0x400 mm/mempolicy.c:2265
 alloc_slab_page mm/slub.c:2412 [inline]
 allocate_slab mm/slub.c:2578 [inline]
 new_slab+0x2ba/0x3f0 mm/slub.c:2631
 ___slab_alloc+0xd45/0x1760 mm/slub.c:3818
 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3908
 __slab_alloc_node mm/slub.c:3961 [inline]
 slab_alloc_node mm/slub.c:4122 [inline]
 __do_kmalloc_node mm/slub.c:4263 [inline]
 __kmalloc_node_track_caller_noprof+0x14e/0x3e0 mm/slub.c:4283
 kvasprintf+0xbd/0x160 lib/kasprintf.c:25
 kasprintf+0xc8/0x100 lib/kasprintf.c:59
 dvb_create_tsout_entity+0x26d/0x430 drivers/media/dvb-core/dvbdev.c:266
 dvb_create_media_entity drivers/media/dvb-core/dvbdev.c:298 [inline]
 dvb_register_media_device drivers/media/dvb-core/dvbdev.c:397 [inline]
 dvb_register_device+0xd99/0x2000 drivers/media/dvb-core/dvbdev.c:547
 dvb_dmxdev_init+0x33e/0x4e0 drivers/media/dvb-core/dmxdev.c:1435
 dvb_usbv2_adapter_dvb_init drivers/media/usb/dvb-usb-v2/dvb_usb_core.c:484 [inline]
 dvb_usbv2_adapter_init drivers/media/usb/dvb-usb-v2/dvb_usb_core.c:801 [inline]
 dvb_usbv2_init drivers/media/usb/dvb-usb-v2/dvb_usb_core.c:866 [inline]
 dvb_usbv2_probe+0x11fa/0x4090 drivers/media/usb/dvb-usb-v2/dvb_usb_core.c:981
 usb_probe_interface+0x309/0x9d0 drivers/usb/core/driver.c:399
 call_driver_probe drivers/base/dd.c:579 [inline]
 really_probe+0x23e/0xa90 drivers/base/dd.c:658
page last free pid 2548 tgid 2548 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1108 [inline]
 free_unref_page+0x58a/0xb50 mm/page_alloc.c:2638
 selinux_genfs_get_sid security/selinux/hooks.c:1348 [inline]
 inode_doinit_with_dentry+0xac4/0x12c0 security/selinux/hooks.c:1546
 selinux_d_instantiate+0x26/0x30 security/selinux/hooks.c:6331
 security_d_instantiate+0x58/0xc0 security/security.c:4063
 d_splice_alias+0x94/0xdf0 fs/dcache.c:2989
 kernfs_iop_lookup+0x286/0x330 fs/kernfs/dir.c:1229
 lookup_open.isra.0+0x806/0x14b0 fs/namei.c:3573
 open_last_lookups fs/namei.c:3694 [inline]
 path_openat+0x904/0x2d60 fs/namei.c:3930
 do_filp_open+0x1dc/0x430 fs/namei.c:3960
 do_sys_openat2+0x17a/0x1e0 fs/open.c:1415
 do_sys_open fs/open.c:1430 [inline]
 __do_sys_openat fs/open.c:1446 [inline]
 __se_sys_openat fs/open.c:1441 [inline]
 __x64_sys_openat+0x175/0x210 fs/open.c:1441
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Memory state around the buggy address:
 ffff88810df44400: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc
 ffff88810df44480: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc
>ffff88810df44500: fa fb fc fc 00 00 fc fc fa fb fc fc fa fb fc fc
                   ^
 ffff88810df44580: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc
 ffff88810df44600: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc
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