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BUG: KASAN: slab-out-of-bounds in udf_write_aext+0x4c0/0x668 fs/udf/inode.c:2088
Write of size 4 at addr ffff0001179007f0 by task syz-executor.1/11500

CPU: 0 PID: 11500 Comm: syz-executor.1 Not tainted 6.2.0-syzkaller-18295-ga9b06ec42c0f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
Call trace:
 dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd0/0x124 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:306 [inline]
 print_report+0x178/0x4e0 mm/kasan/report.c:417
 kasan_report+0xd4/0x130 mm/kasan/report.c:517
 __asan_report_store_n_noabort+0x28/0x34 mm/kasan/report_generic.c:367
 udf_write_aext+0x4c0/0x668 fs/udf/inode.c:2088
 udf_add_entry+0x11e0/0x28b0 fs/udf/namei.c:482
 udf_mkdir+0x158/0x7e0 fs/udf/namei.c:681
 vfs_mkdir+0x334/0x4e4 fs/namei.c:4036
 do_mkdirat+0x200/0x5f8 fs/namei.c:4061
 __do_sys_mkdirat fs/namei.c:4076 [inline]
 __se_sys_mkdirat fs/namei.c:4074 [inline]
 __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4074
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x64/0x198 arch/arm64/kernel/syscall.c:193
 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591

Allocated by task 11493:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4c/0x80 mm/kasan/common.c:52
 kasan_save_alloc_info+0x24/0x30 mm/kasan/generic.c:512
 ____kasan_kmalloc mm/kasan/common.c:374 [inline]
 __kasan_kmalloc+0xac/0xc4 mm/kasan/common.c:383
 kasan_kmalloc include/linux/kasan.h:211 [inline]
 __do_kmalloc_node mm/slab_common.c:968 [inline]
 __kmalloc_node_track_caller+0xd0/0x1c0 mm/slab_common.c:988
 kmalloc_reserve net/core/skbuff.c:492 [inline]
 __alloc_skb+0x180/0x324 net/core/skbuff.c:565
 alloc_skb include/linux/skbuff.h:1270 [inline]
 alloc_uevent_skb+0x78/0x1e4 lib/kobject_uevent.c:290
 uevent_net_broadcast_tagged lib/kobject_uevent.c:351 [inline]
 kobject_uevent_net_broadcast+0x158/0x528 lib/kobject_uevent.c:412
 kobject_uevent_env+0x530/0x874 lib/kobject_uevent.c:593
 kobject_uevent+0x2c/0x3c lib/kobject_uevent.c:642
 __kobject_del+0xd8/0x2d4 lib/kobject.c:585
 kobject_cleanup lib/kobject.c:664 [inline]
 kobject_release lib/kobject.c:704 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x2c0/0x41c lib/kobject.c:721
 netdev_queue_update_kobjects+0x3dc/0x470 net/core/net-sysfs.c:1733
 remove_queue_kobjects net/core/net-sysfs.c:1830 [inline]
 netdev_unregister_kobject+0x100/0x204 net/core/net-sysfs.c:1983
 unregister_netdevice_many_notify+0x1390/0x1988 net/core/dev.c:10861
 unregister_netdevice_many net/core/dev.c:10887 [inline]
 unregister_netdevice_queue+0x2d8/0x324 net/core/dev.c:10768
 unregister_netdevice include/linux/netdevice.h:3057 [inline]
 __tun_detach+0xb24/0x1234 drivers/net/tun.c:684
 tun_detach drivers/net/tun.c:700 [inline]
 tun_chr_close+0xf8/0x1d8 drivers/net/tun.c:3468
 __fput+0x30c/0x7bc fs/file_table.c:320
 ____fput+0x20/0x30 fs/file_table.c:348
 task_work_run+0x240/0x2f0 kernel/task_work.c:179
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 do_notify_resume+0x2180/0x3c90 arch/arm64/kernel/signal.c:1302
 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline]
 el0_svc+0x9c/0x168 arch/arm64/kernel/entry-common.c:638
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591

Freed by task 11493:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4c/0x80 mm/kasan/common.c:52
 kasan_save_free_info+0x38/0x5c mm/kasan/generic.c:523
 ____kasan_slab_free+0x144/0x20c mm/kasan/common.c:236
 __kasan_slab_free+0x18/0x28 mm/kasan/common.c:244
 kasan_slab_free include/linux/kasan.h:177 [inline]
 slab_free_hook mm/slub.c:1781 [inline]
 slab_free_freelist_hook mm/slub.c:1807 [inline]
 slab_free mm/slub.c:3787 [inline]
 __kmem_cache_free+0x2c0/0x500 mm/slub.c:3800
 kfree+0x104/0x268 mm/slab_common.c:1020
 skb_free_head net/core/skbuff.c:822 [inline]
 skb_release_data+0x4ec/0x714 net/core/skbuff.c:851
 skb_release_all net/core/skbuff.c:916 [inline]
 __kfree_skb net/core/skbuff.c:930 [inline]
 consume_skb+0xa4/0x17c net/core/skbuff.c:1098
 netlink_broadcast+0xed0/0x1054 net/netlink/af_netlink.c:1538
 uevent_net_broadcast_tagged lib/kobject_uevent.c:372 [inline]
 kobject_uevent_net_broadcast+0x490/0x528 lib/kobject_uevent.c:412
 kobject_uevent_env+0x530/0x874 lib/kobject_uevent.c:593
 kobject_uevent+0x2c/0x3c lib/kobject_uevent.c:642
 __kobject_del+0xd8/0x2d4 lib/kobject.c:585
 kobject_cleanup lib/kobject.c:664 [inline]
 kobject_release lib/kobject.c:704 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x2c0/0x41c lib/kobject.c:721
 netdev_queue_update_kobjects+0x3dc/0x470 net/core/net-sysfs.c:1733
 remove_queue_kobjects net/core/net-sysfs.c:1830 [inline]
 netdev_unregister_kobject+0x100/0x204 net/core/net-sysfs.c:1983
 unregister_netdevice_many_notify+0x1390/0x1988 net/core/dev.c:10861
 unregister_netdevice_many net/core/dev.c:10887 [inline]
 unregister_netdevice_queue+0x2d8/0x324 net/core/dev.c:10768
 unregister_netdevice include/linux/netdevice.h:3057 [inline]
 __tun_detach+0xb24/0x1234 drivers/net/tun.c:684
 tun_detach drivers/net/tun.c:700 [inline]
 tun_chr_close+0xf8/0x1d8 drivers/net/tun.c:3468
 __fput+0x30c/0x7bc fs/file_table.c:320
 ____fput+0x20/0x30 fs/file_table.c:348
 task_work_run+0x240/0x2f0 kernel/task_work.c:179
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 do_notify_resume+0x2180/0x3c90 arch/arm64/kernel/signal.c:1302
 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline]
 el0_svc+0x9c/0x168 arch/arm64/kernel/entry-common.c:638
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591

Last potentially related work creation:
 kasan_save_stack+0x40/0x70 mm/kasan/common.c:45
 __kasan_record_aux_stack+0xcc/0xe8 mm/kasan/generic.c:493
 kasan_record_aux_stack_noalloc+0x14/0x20 mm/kasan/generic.c:503
 insert_work+0x64/0x384 kernel/workqueue.c:1358
 __queue_work+0xdc4/0x1484 kernel/workqueue.c:1517
 delayed_work_timer_fn+0x74/0x90 kernel/workqueue.c:1643
 call_timer_fn+0x250/0xc94 kernel/time/timer.c:1700
 expire_timers kernel/time/timer.c:1746 [inline]
 __run_timers+0x5b4/0x734 kernel/time/timer.c:2022
 run_timer_softirq+0x7c/0x114 kernel/time/timer.c:2035
 __do_softirq+0x368/0xfa4 kernel/softirq.c:571

Second to last potentially related work creation:
 kasan_save_stack+0x40/0x70 mm/kasan/common.c:45
 __kasan_record_aux_stack+0xcc/0xe8 mm/kasan/generic.c:493
 kasan_record_aux_stack_noalloc+0x14/0x20 mm/kasan/generic.c:503
 insert_work+0x64/0x384 kernel/workqueue.c:1358
 __queue_work+0xdc4/0x1484 kernel/workqueue.c:1517
 delayed_work_timer_fn+0x74/0x90 kernel/workqueue.c:1643
 call_timer_fn+0x250/0xc94 kernel/time/timer.c:1700
 expire_timers kernel/time/timer.c:1746 [inline]
 __run_timers+0x5b4/0x734 kernel/time/timer.c:2022
 run_timer_softirq+0x7c/0x114 kernel/time/timer.c:2035
 __do_softirq+0x368/0xfa4 kernel/softirq.c:571

The buggy address belongs to the object at ffff000117900400
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 496 bytes to the right of
 512-byte region [ffff000117900400, ffff000117900600)

The buggy address belongs to the physical page:
page:00000000f8aa5a6f refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x157900
head:00000000f8aa5a6f order:2 compound_mapcount:0 subpages_mapcount:0 compound_pincount:0
flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000010200 ffff0000c0002600 dead000000000100 dead000000000122
raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff000117900680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff000117900700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff000117900780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                                                             ^
 ffff000117900800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff000117900880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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