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BUG: KASAN: use-after-free in driver_find drivers/base/driver.c:293 [inline]
BUG: KASAN: use-after-free in driver_register+0x2c1/0x3e0 drivers/base/driver.c:233
Read of size 8 at addr ffff888079d940c8 by task syz-executor.2/6809

CPU: 1 PID: 6809 Comm: syz-executor.2 Not tainted 5.19.0-rc3-syzkaller-00038-gca1fdab7fd27 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 print_address_description+0x65/0x4b0 mm/kasan/report.c:313
 print_report+0xf4/0x210 mm/kasan/report.c:429
 kasan_report+0xfb/0x130 mm/kasan/report.c:491
 driver_find drivers/base/driver.c:293 [inline]
 driver_register+0x2c1/0x3e0 drivers/base/driver.c:233
 usb_gadget_register_driver_owner+0xd9/0x230 drivers/usb/gadget/udc/core.c:1558
 raw_ioctl_run+0xbd/0x300 drivers/usb/gadget/legacy/raw_gadget.c:515
 raw_ioctl+0x163/0xc20 drivers/usb/gadget/legacy/raw_gadget.c:1222
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl+0xfb/0x170 fs/ioctl.c:856
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x46/0xb0
RIP: 0033:0x7f8b6d688ec7
Code: 3c 1c 48 f7 d8 49 39 c4 72 b8 e8 34 54 02 00 85 c0 78 bd 48 83 c4 08 4c 89 e0 5b 41 5c c3 0f 1f 44 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8b6e7d6098 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f8b6e7d7110 RCX: 00007f8b6d688ec7
RDX: 0000000000000000 RSI: 0000000000005501 RDI: 0000000000000003
RBP: 0000000000000003 R08: 000000000000ffff R09: 000000000000000b
R10: 00007f8b6e7d6140 R11: 0000000000000246 R12: 0000000000000000
R13: 00000000200004c0 R14: 0000000020000000 R15: 0000000000000000
 </TASK>

Allocated by task 6793:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:45 [inline]
 set_alloc_info mm/kasan/common.c:436 [inline]
 ____kasan_kmalloc+0xdc/0x110 mm/kasan/common.c:515
 kasan_kmalloc include/linux/kasan.h:234 [inline]
 kmem_cache_alloc_trace+0x94/0x310 mm/slub.c:3284
 kmalloc include/linux/slab.h:600 [inline]
 kzalloc include/linux/slab.h:733 [inline]
 bus_add_driver+0xde/0x600 drivers/base/bus.c:602
 driver_register+0x2e9/0x3e0 drivers/base/driver.c:240
 usb_gadget_register_driver_owner+0xd9/0x230 drivers/usb/gadget/udc/core.c:1558
 raw_ioctl_run+0xbd/0x300 drivers/usb/gadget/legacy/raw_gadget.c:515
 raw_ioctl+0x163/0xc20 drivers/usb/gadget/legacy/raw_gadget.c:1222
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl+0xfb/0x170 fs/ioctl.c:856
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x46/0xb0

Freed by task 6809:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track+0x4c/0x70 mm/kasan/common.c:45
 kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:370
 ____kasan_slab_free+0xd8/0x110 mm/kasan/common.c:366
 kasan_slab_free include/linux/kasan.h:200 [inline]
 slab_free_hook mm/slub.c:1754 [inline]
 slab_free_freelist_hook+0x12e/0x1a0 mm/slub.c:1780
 slab_free mm/slub.c:3536 [inline]
 kfree+0xc6/0x210 mm/slub.c:4584
 kobject_cleanup+0x235/0x470 lib/kobject.c:673
 driver_find drivers/base/driver.c:291 [inline]
 driver_register+0x29b/0x3e0 drivers/base/driver.c:233
 usb_gadget_register_driver_owner+0xd9/0x230 drivers/usb/gadget/udc/core.c:1558
 raw_ioctl_run+0xbd/0x300 drivers/usb/gadget/legacy/raw_gadget.c:515
 raw_ioctl+0x163/0xc20 drivers/usb/gadget/legacy/raw_gadget.c:1222
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl+0xfb/0x170 fs/ioctl.c:856
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x46/0xb0

The buggy address belongs to the object at ffff888079d94000
 which belongs to the cache kmalloc-256 of size 256
The buggy address is located 200 bytes inside of
 256-byte region [ffff888079d94000, ffff888079d94100)

The buggy address belongs to the physical page:
page:ffffea0001e76500 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x79d94
head:ffffea0001e76500 order:1 compound_mapcount:0 compound_pincount:0
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000010200 dead000000000100 dead000000000122 ffff888011c41b40
raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 1, migratetype Unmovable, gfp_mask 0x1d2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 16626, tgid 16626 (syz-executor.1), ts 243388015936, free_ts 242697001574
 prep_new_page mm/page_alloc.c:2456 [inline]
 get_page_from_freelist+0x72b/0x7a0 mm/page_alloc.c:4198
 __alloc_pages+0x259/0x560 mm/page_alloc.c:5426
 alloc_slab_page+0x70/0xf0 mm/slub.c:1824
 allocate_slab+0x5e/0x520 mm/slub.c:1969
 new_slab mm/slub.c:2029 [inline]
 ___slab_alloc+0x42e/0xce0 mm/slub.c:3031
 __slab_alloc mm/slub.c:3118 [inline]
 slab_alloc_node mm/slub.c:3209 [inline]
 slab_alloc mm/slub.c:3251 [inline]
 kmem_cache_alloc_trace+0x25c/0x310 mm/slub.c:3282
 kmalloc include/linux/slab.h:600 [inline]
 kzalloc include/linux/slab.h:733 [inline]
 smk_fetch+0x91/0x140 security/smack/smack_lsm.c:290
 smack_d_instantiate+0x7b0/0xa10 security/smack/smack_lsm.c:3459
 security_d_instantiate+0xa5/0x100 security/security.c:2050
 d_instantiate_new+0x61/0x110 fs/dcache.c:2053
 ext4_add_nondir+0x200/0x260 fs/ext4/namei.c:2741
 ext4_symlink+0x925/0xb40 fs/ext4/namei.c:3374
 vfs_symlink+0x246/0x3d0 fs/namei.c:4341
 do_symlinkat+0x209/0x610 fs/namei.c:4370
 __do_sys_symlinkat fs/namei.c:4387 [inline]
 __se_sys_symlinkat fs/namei.c:4384 [inline]
 __x64_sys_symlinkat+0x95/0xa0 fs/namei.c:4384
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1371 [inline]
 free_pcp_prepare+0x812/0x900 mm/page_alloc.c:1421
 free_unref_page_prepare mm/page_alloc.c:3343 [inline]
 free_unref_page_list+0x12c/0x890 mm/page_alloc.c:3475
 release_pages+0x2a04/0x2cb0 mm/swap.c:980
 tlb_batch_pages_flush mm/mmu_gather.c:58 [inline]
 tlb_flush_mmu_free mm/mmu_gather.c:255 [inline]
 tlb_flush_mmu+0x850/0xa70 mm/mmu_gather.c:262
 tlb_finish_mmu+0xcb/0x200 mm/mmu_gather.c:353
 exit_mmap+0x1dc/0x530 mm/mmap.c:3164
 __mmput+0x111/0x3a0 kernel/fork.c:1187
 exit_mm+0x211/0x2f0 kernel/exit.c:510
 do_exit+0x4ca/0x1ed0 kernel/exit.c:782
 do_group_exit+0x23b/0x2f0 kernel/exit.c:925
 __do_sys_exit_group kernel/exit.c:936 [inline]
 __se_sys_exit_group kernel/exit.c:934 [inline]
 __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:934
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x46/0xb0

Memory state around the buggy address:
 ffff888079d93f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff888079d94000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888079d94080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                              ^
 ffff888079d94100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888079d94180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
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