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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 ffff88804ee49640 by task syz.4.5541/29297

CPU: 0 UID: 0 PID: 29297 Comm: syz.4.5541 Not tainted 6.12.0-rc3-syzkaller-00007-g6485cf5ea253 #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_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9e1cb7dff9
Code: Unable to access opcode bytes at 0x7f9e1cb7dfcf.
RSP: 002b:00007f9e1ce5fb88 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000000 RBX: 00007f9e1cd35f88 RCX: 00007f9e1cb7dff9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f9e1cd35f88
RBP: 00007f9e1cd35f8c R08: 0000000000000000 R09: 00007f9e1ce5fe7f
R10: 00007f9e1cd35f80 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9e1cd35f80 R14: 0000000000000005 R15: 0000000000000c64
 </TASK>

Allocated by task 29326:
 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
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl+0xf9/0x170 fs/ioctl.c:893
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 29298:
 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]
 __x64_sys_close+0x7f/0x110 fs/open.c:1550
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff88804ee49640
 which belongs to the cache kmalloc-16 of size 16
The buggy address is located 0 bytes inside of
 16-byte region [ffff88804ee49640, ffff88804ee49650)

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x4ee49
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 10079, tgid 10079 (syz-executor), ts 404586536877, free_ts 404568476931
 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
 __kvmalloc_node_noprof+0x72/0x190 mm/util.c:658
 xt_jumpstack_alloc net/netfilter/x_tables.c:1355 [inline]
 xt_replace_table+0x1a2/0x780 net/netfilter/x_tables.c:1394
 __do_replace+0x1ae/0xa50 net/ipv6/netfilter/ip6_tables.c:1081
 do_replace net/ipv6/netfilter/ip6_tables.c:1158 [inline]
 do_ip6t_set_ctl+0xf11/0x1270 net/ipv6/netfilter/ip6_tables.c:1644
 nf_setsockopt+0x295/0x2c0 net/netfilter/nf_sockopt.c:101
 do_sock_setsockopt+0x3af/0x720 net/socket.c:2334
 __sys_setsockopt+0x1a2/0x250 net/socket.c:2357
 __do_sys_setsockopt net/socket.c:2366 [inline]
 __se_sys_setsockopt net/socket.c:2363 [inline]
 __x64_sys_setsockopt+0xb5/0xd0 net/socket.c:2363
page last free pid 11240 tgid 11240 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1108 [inline]
 free_unref_page+0xcfb/0xf20 mm/page_alloc.c:2638
 tlb_batch_list_free mm/mmu_gather.c:159 [inline]
 tlb_finish_mmu+0x11f/0x200 mm/mmu_gather.c:468
 exit_mmap+0x496/0xc40 mm/mmap.c:1877
 __mmput+0x115/0x390 kernel/fork.c:1347
 exit_mm+0x220/0x310 kernel/exit.c:571
 do_exit+0x9b2/0x28e0 kernel/exit.c:926
 do_group_exit+0x207/0x2c0 kernel/exit.c:1088
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1097
 x64_sys_call+0x2634/0x2640 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Memory state around the buggy address:
 ffff88804ee49500: 00 04 fc fc 00 00 fc fc 00 00 fc fc fa fb fc fc
 ffff88804ee49580: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc
>ffff88804ee49600: 00 07 fc fc 00 06 fc fc fa fb fc fc 00 00 fc fc
                                           ^
 ffff88804ee49680: 00 00 fc fc 00 00 fc fc 00 00 fc fc 00 07 fc fc
 ffff88804ee49700: fa fb fc fc 00 00 fc fc 00 00 fc fc fa fb fc fc
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