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BUG: KASAN: slab-out-of-bounds in udf_write_aext+0x847/0x860 fs/udf/inode.c:2059
Write of size 4 at addr ffff88809a15e538 by task syz-executor.3/23650

CPU: 0 PID: 23650 Comm: syz-executor.3 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 print_address_description.cold+0x54/0x219 mm/kasan/report.c:256
 kasan_report_error.cold+0x8a/0x1b9 mm/kasan/report.c:354
 kasan_report mm/kasan/report.c:412 [inline]
 __asan_report_store_n_noabort+0x8b/0xa0 mm/kasan/report.c:449
 udf_write_aext+0x847/0x860 fs/udf/inode.c:2059
 udf_add_entry+0xdab/0x2a20 fs/udf/namei.c:496
 udf_mkdir+0x145/0x650 fs/udf/namei.c:693
 vfs_mkdir+0x508/0x7a0 fs/namei.c:3819
 do_mkdirat+0x262/0x2d0 fs/namei.c:3842
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f94e23865a9
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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f94e0cfa168 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f94e24a7f80 RCX: 00007f94e23865a9
RDX: 00000000000001ff RSI: 0000000020000000 RDI: ffffffffffffff9c
RBP: 00007f94e23e1580 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff8f57f61f R14: 00007f94e0cfa300 R15: 0000000000022000

Allocated by task 6236:
 __do_kmalloc_node mm/slab.c:3689 [inline]
 __kmalloc_node_track_caller+0x4c/0x70 mm/slab.c:3703
 __kmalloc_reserve net/core/skbuff.c:137 [inline]
 __alloc_skb+0xae/0x560 net/core/skbuff.c:205
 __netdev_alloc_skb+0x76/0x460 net/core/skbuff.c:407
 netdev_alloc_skb include/linux/skbuff.h:2680 [inline]
 dev_alloc_skb include/linux/skbuff.h:2693 [inline]
 __ieee80211_beacon_get+0xc7d/0x1a30 net/mac80211/tx.c:4352
 ieee80211_beacon_get_tim+0x88/0x890 net/mac80211/tx.c:4463
 ieee80211_beacon_get include/net/mac80211.h:4484 [inline]
 mac80211_hwsim_beacon_tx+0xff/0x680 drivers/net/wireless/mac80211_hwsim.c:1577
 __iterate_interfaces+0x2e1/0x4a0 net/mac80211/util.c:614
 ieee80211_iterate_active_interfaces_atomic+0x8d/0x170 net/mac80211/util.c:650
 mac80211_hwsim_beacon+0xc9/0x190 drivers/net/wireless/mac80211_hwsim.c:1615
 __tasklet_hrtimer_trampoline+0x29/0xa0 kernel/softirq.c:601
 tasklet_action_common.constprop.0+0x265/0x360 kernel/softirq.c:522
 __do_softirq+0x265/0x980 kernel/softirq.c:292

Freed by task 6236:
 __cache_free mm/slab.c:3503 [inline]
 kfree+0xcc/0x210 mm/slab.c:3822
 skb_free_head net/core/skbuff.c:563 [inline]
 skb_release_data+0x6de/0x920 net/core/skbuff.c:583
 skb_release_all net/core/skbuff.c:640 [inline]
 __kfree_skb net/core/skbuff.c:654 [inline]
 consume_skb+0x113/0x3d0 net/core/skbuff.c:714
 mac80211_hwsim_tx_frame+0x133/0x210 drivers/net/wireless/mac80211_hwsim.c:1557
 mac80211_hwsim_beacon_tx+0x3f8/0x680 drivers/net/wireless/mac80211_hwsim.c:1595
 __iterate_interfaces+0x2e1/0x4a0 net/mac80211/util.c:614
 ieee80211_iterate_active_interfaces_atomic+0x8d/0x170 net/mac80211/util.c:650
 mac80211_hwsim_beacon+0xc9/0x190 drivers/net/wireless/mac80211_hwsim.c:1615
 __tasklet_hrtimer_trampoline+0x29/0xa0 kernel/softirq.c:601
 tasklet_action_common.constprop.0+0x265/0x360 kernel/softirq.c:522
 __do_softirq+0x265/0x980 kernel/softirq.c:292

The buggy address belongs to the object at ffff88809a15e2c0
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 120 bytes to the right of
 512-byte region [ffff88809a15e2c0, ffff88809a15e4c0)
The buggy address belongs to the page:
page:ffffea0002685780 count:1 mapcount:0 mapping:ffff88813bff0940 index:0xffff88809a15ecc0
flags: 0xfff00000000100(slab)
raw: 00fff00000000100 ffffea000263d388 ffffea00027f6688 ffff88813bff0940
raw: ffff88809a15ecc0 ffff88809a15e040 0000000100000004 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff88809a15e400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88809a15e480: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
>ffff88809a15e500: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00
                                        ^
 ffff88809a15e580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88809a15e600: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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