================================================================== BUG: KASAN: slab-out-of-bounds in udf_write_aext+0x4c0/0x668 fs/udf/inode.c:2105 Write of size 4 at addr ffff0000cc70c3f0 by task syz.2.293/5919 CPU: 0 PID: 5919 Comm: syz.2.293 Not tainted 6.1.113-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 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+0x108/0x170 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:284 [inline] print_report+0x174/0x4c0 mm/kasan/report.c:395 kasan_report+0xd4/0x130 mm/kasan/report.c:495 __asan_report_store_n_noabort+0x28/0x34 mm/kasan/report_generic.c:367 udf_write_aext+0x4c0/0x668 fs/udf/inode.c:2105 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:4106 do_mkdirat+0x220/0x510 fs/namei.c:4131 __do_sys_mkdirat fs/namei.c:4146 [inline] __se_sys_mkdirat fs/namei.c:4144 [inline] __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4144 __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:140 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:204 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+0x18c/0x190 arch/arm64/kernel/entry.S:585 Allocated by task 455: 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:505 ____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:936 [inline] __kmalloc_node_track_caller+0xd0/0x1c0 mm/slab_common.c:956 kmalloc_reserve net/core/skbuff.c:446 [inline] __alloc_skb+0x180/0x580 net/core/skbuff.c:515 skb_copy+0x10c/0x6c8 net/core/skbuff.c:1732 mac80211_hwsim_tx_frame_no_nl+0xdf0/0x1638 drivers/net/wireless/mac80211_hwsim.c:1724 mac80211_hwsim_tx_frame+0x1c4/0x1f8 drivers/net/wireless/mac80211_hwsim.c:2053 mac80211_hwsim_beacon_tx+0x500/0x94c drivers/net/wireless/mac80211_hwsim.c:2116 __iterate_interfaces+0x204/0x484 net/mac80211/util.c:790 ieee80211_iterate_active_interfaces_atomic+0xd4/0x180 net/mac80211/util.c:826 mac80211_hwsim_beacon+0xcc/0x1c8 drivers/net/wireless/mac80211_hwsim.c:2142 __run_hrtimer kernel/time/hrtimer.c:1689 [inline] __hrtimer_run_queues+0x4b0/0xdc0 kernel/time/hrtimer.c:1753 hrtimer_run_softirq+0x158/0x21c kernel/time/hrtimer.c:1770 handle_softirqs+0x318/0xd58 kernel/softirq.c:571 __do_softirq+0x14/0x20 kernel/softirq.c:605 Freed by task 4358: 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:516 ____kasan_slab_free+0x144/0x1c0 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:1724 [inline] slab_free_freelist_hook mm/slub.c:1750 [inline] slab_free mm/slub.c:3661 [inline] __kmem_cache_free+0x2c0/0x4b4 mm/slub.c:3674 kfree+0xcc/0x1b8 mm/slab_common.c:988 skb_free_head net/core/skbuff.c:762 [inline] skb_release_data+0x488/0x6b0 net/core/skbuff.c:791 skb_release_all net/core/skbuff.c:856 [inline] __kfree_skb net/core/skbuff.c:870 [inline] kfree_skb_reason+0x1a4/0x47c net/core/skbuff.c:893 kfree_skb include/linux/skbuff.h:1220 [inline] ieee80211_iface_work+0x650/0xa90 net/mac80211/iface.c:1724 process_one_work+0x7ac/0x1404 kernel/workqueue.c:2292 worker_thread+0x8e4/0xfec kernel/workqueue.c:2439 kthread+0x250/0x2d8 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:864 The buggy address belongs to the object at ffff0000cc70c000 which belongs to the cache kmalloc-512 of size 512 The buggy address is located 496 bytes to the right of 512-byte region [ffff0000cc70c000, ffff0000cc70c200) The buggy address belongs to the physical page: page:00000000c081b7ec refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10c70c head:00000000c081b7ec order:2 compound_mapcount:0 compound_pincount:0 flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000010200 0000000000000000 dead000000000001 ffff0000c0002600 raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000cc70c280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff0000cc70c300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff0000cc70c380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff0000cc70c400: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff0000cc70c480: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ================================================================== UDF-fs: error (device loop2): udf_read_inode: (ino 1347) failed !bh UDF-fs: error (device loop2): udf_read_inode: (ino 1347) failed !bh overlayfs: failed to resolve './file2': -5