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BUG: KASAN: double-free in dev_free drivers/usb/gadget/legacy/raw_gadget.c:225 [inline]
BUG: KASAN: double-free in kref_put+0x4ab/0x7c0 include/linux/kref.h:65
Free of addr ffff8880257e56c0 by task syz.1.829/8112

CPU: 1 UID: 0 PID: 8112 Comm: syz.1.829 Not tainted 6.12.0-rc3-syzkaller-00044-g2f87d0916ce0 #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+0x241/0x360 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:377 [inline]
 print_report+0x169/0x550 mm/kasan/report.c:488
 kasan_report_invalid_free+0x11a/0x140 mm/kasan/report.c:563
 check_slab_allocation+0xc6/0x110
 kasan_slab_pre_free include/linux/kasan.h:195 [inline]
 slab_free_hook mm/slub.c:2287 [inline]
 slab_free mm/slub.c:4579 [inline]
 kfree+0x151/0x440 mm/slub.c:4727
 dev_free drivers/usb/gadget/legacy/raw_gadget.c:225 [inline]
 kref_put+0x4ab/0x7c0 include/linux/kref.h:65
 raw_release+0x135/0x1e0 drivers/usb/gadget/legacy/raw_gadget.c:473
 __fput+0x23f/0x880 fs/file_table.c:431
 task_work_run+0x24f/0x310 kernel/task_work.c:228
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0xa2f/0x28e0 kernel/exit.c:939
 do_group_exit+0x207/0x2c0 kernel/exit.c:1088
 get_signal+0x16a3/0x1740 kernel/signal.c:2917
 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0xc9/0x370 kernel/entry/common.c:218
 __do_fast_syscall_32+0xc4/0x110 arch/x86/entry/common.c:389
 do_fast_syscall_32+0x34/0x80 arch/x86/entry/common.c:411
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf743d579
Code: Unable to access opcode bytes at 0xf743d54f.
RSP: 002b:00000000f5726530 EFLAGS: 00000206 ORIG_RAX: 0000000000000006
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00000000f5726b40
RDX: 0000000000000000 RSI: 00000000f742bff4 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>

Allocated by task 8156:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
 __kasan_kmalloc+0x98/0xb0 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+0x225/0x440 mm/slub.c:4283
 memdup_user+0x2b/0xc0 mm/util.c:226
 raw_ioctl_ep_enable drivers/usb/gadget/legacy/raw_gadget.c:847 [inline]
 raw_ioctl+0xd0c/0x3cd0 drivers/usb/gadget/legacy/raw_gadget.c:1318
 __do_compat_sys_ioctl fs/ioctl.c:1007 [inline]
 __se_compat_sys_ioctl+0x510/0xc90 fs/ioctl.c:950
 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
 __do_fast_syscall_32+0xb4/0x110 arch/x86/entry/common.c:386
 do_fast_syscall_32+0x34/0x80 arch/x86/entry/common.c:411
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e

Freed by task 8112:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579
 poison_slab_object mm/kasan/common.c:247 [inline]
 __kasan_slab_free+0x59/0x70 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+0x1a0/0x440 mm/slub.c:4727
 dev_free drivers/usb/gadget/legacy/raw_gadget.c:225 [inline]
 kref_put+0x4ab/0x7c0 include/linux/kref.h:65
 raw_release+0x135/0x1e0 drivers/usb/gadget/legacy/raw_gadget.c:473
 __fput+0x23f/0x880 fs/file_table.c:431
 __do_sys_close fs/open.c:1565 [inline]
 __se_sys_close fs/open.c:1550 [inline]
 __ia32_sys_close+0x7f/0x110 fs/open.c:1550
 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
 __do_fast_syscall_32+0xb4/0x110 arch/x86/entry/common.c:386
 do_fast_syscall_32+0x34/0x80 arch/x86/entry/common.c:411
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e

The buggy address belongs to the object at ffff8880257e56c0
 which belongs to the cache kmalloc-16 of size 16
The buggy address is located 0 bytes inside of
 16-byte region [ffff8880257e56c0, ffff8880257e56d0)

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x257e5
anon flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000000 ffff88801ac41640 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 0x252800(GFP_NOWAIT|__GFP_NORETRY|__GFP_COMP|__GFP_THISNODE), pid 35, tgid 35 (kworker/u8:2), ts 6965360783, free_ts 0
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1537
 prep_new_page mm/page_alloc.c:1545 [inline]
 get_page_from_freelist+0x3045/0x3190 mm/page_alloc.c:3457
 __alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4733
 __alloc_pages_node_noprof include/linux/gfp.h:269 [inline]
 alloc_slab_page+0x59/0x120 mm/slub.c:2414
 allocate_slab+0x5a/0x2f0 mm/slub.c:2578
 new_slab mm/slub.c:2631 [inline]
 ___slab_alloc+0xcd1/0x14b0 mm/slub.c:3818
 __slab_alloc+0x58/0xa0 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_noprof+0x286/0x440 mm/slub.c:4270
 kmalloc_array_node_noprof include/linux/slab.h:995 [inline]
 blk_mq_alloc_hctx block/blk-mq.c:3776 [inline]
 blk_mq_alloc_and_init_hctx+0x47c/0xdc0 block/blk-mq.c:4249
 blk_mq_realloc_hw_ctxs+0x198/0x4a0 block/blk-mq.c:4282
 blk_mq_init_allocated_queue+0x3d1/0x14f0 block/blk-mq.c:4324
 blk_mq_alloc_queue+0x1d9/0x2f0 block/blk-mq.c:4158
 scsi_alloc_sdev+0x772/0xb90 drivers/scsi/scsi_scan.c:337
 scsi_probe_and_add_lun+0x1db/0x4be0 drivers/scsi/scsi_scan.c:1210
 __scsi_scan_target+0x205/0x1080 drivers/scsi/scsi_scan.c:1757
 scsi_scan_channel drivers/scsi/scsi_scan.c:1845 [inline]
 scsi_scan_host_selected+0x37e/0x690 drivers/scsi/scsi_scan.c:1874
page_owner free stack trace missing

Memory state around the buggy address:
 ffff8880257e5580: 00 00 fc fc 00 00 fc fc 00 00 fc fc fa fb fc fc
 ffff8880257e5600: 00 00 fc fc 00 01 fc fc 00 00 fc fc fa fb fc fc
>ffff8880257e5680: 00 00 fc fc 00 00 fc fc fa fb fc fc 00 00 fc fc
                                           ^
 ffff8880257e5700: fa fb fc fc 00 00 fc fc 00 00 fc fc 00 00 fc fc
 ffff8880257e5780: 00 00 fc fc 00 00 fc fc 00 00 fc fc 00 00 fc fc
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