syzbot

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BUG: KASAN: slab-use-after-free in usb_endpoint_xfer_isoc include/uapi/linux/usb/ch9.h:563 [inline]
BUG: KASAN: slab-use-after-free in raw_ioctl_ep_set_clear_halt_wedge+0x4be/0x7c0 drivers/usb/gadget/legacy/raw_gadget.c:1012
Read of size 1 at addr ffff888109b3d4c3 by task syz.0.895/8514

CPU: 0 UID: 0 PID: 8514 Comm: syz.0.895 Not tainted 6.12.0-rc1-syzkaller-00027-g4a9fe2a8ac53 #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_xfer_isoc include/uapi/linux/usb/ch9.h:563 [inline]
 raw_ioctl_ep_set_clear_halt_wedge+0x4be/0x7c0 drivers/usb/gadget/legacy/raw_gadget.c:1012
 raw_ioctl+0xff/0x2b90 drivers/usb/gadget/legacy/raw_gadget.c:1350
 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: 0033:0x7f47be4bdff9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f47bd110038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f47be676058 RCX: 00007f47be4bdff9
RDX: 0000000000000000 RSI: 000000004004550d RDI: 0000000000000003
RBP: 00007f47be530296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f47be676058 R15: 00007fff74d69c18
 </TASK>

Allocated by task 8515:
 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:4265 [inline]
 __kmalloc_node_track_caller_noprof+0x1ff/0x3e0 mm/slub.c:4284
 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 8506:
 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:2343 [inline]
 slab_free mm/slub.c:4580 [inline]
 kfree+0x130/0x480 mm/slub.c:4728
 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 ffff888109b3d4c0
 which belongs to the cache kmalloc-16 of size 16
The buggy address is located 3 bytes inside of
 freed 16-byte region [ffff888109b3d4c0, ffff888109b3d4d0)

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x109b3d
anon flags: 0x200000000000000(node=0|zone=2)
page_type: f5(slab)
raw: 0200000000000000 ffff888100041640 0000000000000000 dead000000000001
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 0xd2cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 4938, tgid 4938 (kworker/1:4), ts 270233034458, free_ts 211064263030
 create_dummy_stack mm/page_owner.c:94 [inline]
 register_dummy_stack+0x8a/0xd0 mm/page_owner.c:100
 init_page_owner+0x48/0xbd0 mm/page_owner.c:118
 invoke_init_callbacks mm/page_ext.c:148 [inline]
 page_ext_init+0x725/0xbf0 mm/page_ext.c:497
 mm_core_init+0x202/0x240 mm/mm_init.c:2667
page last free pid 4922 tgid 4922 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
 kasan_depopulate_vmalloc_pte+0x63/0x80 mm/kasan/shadow.c:408
 apply_to_pte_range mm/memory.c:2817 [inline]
 apply_to_pmd_range mm/memory.c:2861 [inline]
 apply_to_pud_range mm/memory.c:2897 [inline]
 apply_to_p4d_range mm/memory.c:2933 [inline]
 __apply_to_page_range+0x5fd/0xd30 mm/memory.c:2967
 kasan_release_vmalloc+0xac/0xc0 mm/kasan/shadow.c:525
 purge_vmap_node+0x3fb/0x930 mm/vmalloc.c:2204
 __purge_vmap_area_lazy+0x9c5/0xc00 mm/vmalloc.c:2288
 drain_vmap_area_work+0x27/0x40 mm/vmalloc.c:2322
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229
 process_scheduled_works kernel/workqueue.c:3310 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Memory state around the buggy address:
 ffff888109b3d380: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc
 ffff888109b3d400: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc
>ffff888109b3d480: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc
                                           ^
 ffff888109b3d500: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc
 ffff888109b3d580: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc
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