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BUG: KASAN: slab-out-of-bounds in udf_write_aext+0x5e9/0x7a0 fs/udf/inode.c:2105
Write of size 4 at addr ffff88802890fff0 by task syz.3.398/5543

CPU: 0 PID: 5543 Comm: syz.3.398 Not tainted 6.1.110-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:284 [inline]
 print_report+0x15f/0x4f0 mm/kasan/report.c:395
 kasan_report+0x136/0x160 mm/kasan/report.c:495
 udf_write_aext+0x5e9/0x7a0 fs/udf/inode.c:2105
 udf_add_entry+0x17b7/0x3350 fs/udf/namei.c:482
 udf_mkdir+0x1a8/0xaa0 fs/udf/namei.c:681
 vfs_mkdir+0x3b6/0x590 fs/namei.c:4108
 do_mkdirat+0x225/0x360 fs/namei.c:4133
 __do_sys_mkdir fs/namei.c:4153 [inline]
 __se_sys_mkdir fs/namei.c:4151 [inline]
 __x64_sys_mkdir+0x6a/0x80 fs/namei.c:4151
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7ff88877def9
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:00007ff8895ec038 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007ff888935f80 RCX: 00007ff88877def9
RDX: 0000000000000000 RSI: 0000000000000040 RDI: 0000000020000080
RBP: 00007ff8887f0b76 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007ff888935f80 R15: 00007fff4142a8e8
 </TASK>

Allocated by task 1:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
 ____kasan_kmalloc mm/kasan/common.c:374 [inline]
 __kasan_kmalloc+0x97/0xb0 mm/kasan/common.c:383
 kmalloc include/linux/slab.h:557 [inline]
 kzalloc include/linux/slab.h:693 [inline]
 device_private_init drivers/base/core.c:3536 [inline]
 device_add+0xb5/0xfd0 drivers/base/core.c:3586
 device_create_groups_vargs drivers/base/core.c:4386 [inline]
 device_create+0x253/0x2e0 drivers/base/core.c:4428
 mon_bin_add+0xad/0x120 drivers/usb/mon/mon_bin.c:1369
 mon_bus_init+0x169/0x290 drivers/usb/mon/mon_main.c:302
 mon_bus_add drivers/usb/mon/mon_main.c:199 [inline]
 mon_notify+0x10e/0x3f0 drivers/usb/mon/mon_main.c:230
 notifier_call_chain kernel/notifier.c:87 [inline]
 blocking_notifier_call_chain+0x104/0x1b0 kernel/notifier.c:382
 usb_register_bus drivers/usb/core/hcd.c:935 [inline]
 usb_add_hcd+0x48f/0x1250 drivers/usb/core/hcd.c:2881
 vhci_hcd_probe+0x1f0/0x3b0 drivers/usb/usbip/vhci_hcd.c:1379
 platform_probe+0x131/0x1b0 drivers/base/platform.c:1400
 really_probe+0x2ab/0xcb0 drivers/base/dd.c:639
 __driver_probe_device+0x1a2/0x3d0 drivers/base/dd.c:785
 driver_probe_device+0x50/0x420 drivers/base/dd.c:815
 __device_attach_driver+0x2cf/0x510 drivers/base/dd.c:943
 bus_for_each_drv+0x183/0x200 drivers/base/bus.c:427
 __device_attach+0x359/0x570 drivers/base/dd.c:1015
 bus_probe_device+0xba/0x1e0 drivers/base/bus.c:487
 device_add+0xb48/0xfd0 drivers/base/core.c:3692
 platform_device_add+0x46e/0x7d0 drivers/base/platform.c:717
 vhci_hcd_init+0x3e4/0x508 drivers/usb/usbip/vhci_hcd.c:1549
 do_one_initcall+0x265/0x8f0 init/main.c:1298
 do_initcall_level+0x157/0x207 init/main.c:1371
 do_initcalls+0x49/0x86 init/main.c:1387
 kernel_init_freeable+0x45c/0x60f init/main.c:1626
 kernel_init+0x19/0x290 init/main.c:1514
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295

The buggy address belongs to the object at ffff88802890fc00
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 496 bytes to the right of
 512-byte region [ffff88802890fc00, ffff88802890fe00)

The buggy address belongs to the physical page:
page:ffffea0000a24300 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2890c
head:ffffea0000a24300 order:2 compound_mapcount:0 compound_pincount:0
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000010200 0000000000000000 dead000000000122 ffff888017c41c80
raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1, tgid 1 (swapper/0), ts 10889431793, free_ts 0
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x18d/0x1b0 mm/page_alloc.c:2517
 prep_new_page mm/page_alloc.c:2524 [inline]
 get_page_from_freelist+0x322e/0x33b0 mm/page_alloc.c:4290
 __alloc_pages+0x28d/0x770 mm/page_alloc.c:5558
 alloc_page_interleave+0x22/0x1c0 mm/mempolicy.c:2115
 alloc_slab_page+0x6a/0x150 mm/slub.c:1794
 allocate_slab mm/slub.c:1939 [inline]
 new_slab+0x84/0x2d0 mm/slub.c:1992
 ___slab_alloc+0xc20/0x1270 mm/slub.c:3180
 __slab_alloc mm/slub.c:3279 [inline]
 slab_alloc_node mm/slub.c:3364 [inline]
 __kmem_cache_alloc_node+0x19f/0x260 mm/slub.c:3437
 kmalloc_trace+0x26/0xe0 mm/slab_common.c:1026
 kmalloc include/linux/slab.h:557 [inline]
 kzalloc include/linux/slab.h:693 [inline]
 dev_pm_qos_constraints_allocate+0x8f/0x400 drivers/base/power/qos.c:204
 __dev_pm_qos_add_request+0x122/0x530 drivers/base/power/qos.c:344
 dev_pm_qos_add_request+0x36/0x50 drivers/base/power/qos.c:394
 usb_hub_create_port_device+0x44a/0xb50 drivers/usb/core/port.c:718
 hub_configure drivers/usb/core/hub.c:1681 [inline]
 hub_probe+0x24cb/0x35b0 drivers/usb/core/hub.c:1936
 usb_probe_interface+0x5c0/0xaf0 drivers/usb/core/driver.c:396
 really_probe+0x2ab/0xcb0 drivers/base/dd.c:639
page_owner free stack trace missing

Memory state around the buggy address:
 ffff88802890fe80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88802890ff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88802890ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                                                             ^
 ffff888028910000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff888028910080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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