================================================================== BUG: KASAN: slab-out-of-bounds in udf_write_aext+0x4c0/0x668 fs/udf/inode.c:2088 Write of size 4 at addr ffff0000cd37eff0 by task syz-executor.5/16562 CPU: 1 PID: 16562 Comm: syz-executor.5 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 5454: 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_untagged lib/kobject_uevent.c:326 [inline] kobject_uevent_net_broadcast+0x2bc/0x528 lib/kobject_uevent.c:409 kobject_uevent_env+0x530/0x874 lib/kobject_uevent.c:593 kobject_synth_uevent+0x818/0xa70 lib/kobject_uevent.c:208 uevent_store+0x34/0x84 drivers/base/core.c:2510 dev_attr_store+0x6c/0x90 drivers/base/core.c:2212 sysfs_kf_write+0x200/0x280 fs/sysfs/file.c:136 kernfs_fop_write_iter+0x334/0x48c fs/kernfs/file.c:334 call_write_iter include/linux/fs.h:2189 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x610/0x914 fs/read_write.c:584 ksys_write+0x15c/0x26c fs/read_write.c:637 __do_sys_write fs/read_write.c:649 [inline] __se_sys_write fs/read_write.c:646 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:646 __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 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 queue_work_on+0x9c/0x128 kernel/workqueue.c:1545 queue_work include/linux/workqueue.h:503 [inline] tipc_topsrv_queue_evt+0x214/0x264 net/tipc/topsrv.c:336 tipc_sub_send_event+0x300/0x66c net/tipc/subscr.c:63 tipc_sub_report_overlap+0x1a8/0x29c net/tipc/subscr.c:102 tipc_service_insert_publ net/tipc/name_table.c:366 [inline] tipc_nametbl_insert_publ+0xa3c/0xe6c net/tipc/name_table.c:491 tipc_nametbl_publish+0xd0/0x1d8 net/tipc/name_table.c:776 tipc_sk_publish+0x198/0x3cc net/tipc/socket.c:2918 tipc_sk_join+0x318/0x5c4 net/tipc/socket.c:3096 tipc_setsockopt+0x7c4/0xb78 net/tipc/socket.c:3203 __sys_setsockopt+0x370/0x630 net/socket.c:2249 __do_sys_setsockopt net/socket.c:2260 [inline] __se_sys_setsockopt net/socket.c:2257 [inline] __arm64_sys_setsockopt+0xb8/0xd4 net/socket.c:2257 __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 The buggy address belongs to the object at ffff0000cd37ec00 which belongs to the cache kmalloc-512 of size 512 The buggy address is located 496 bytes to the right of 512-byte region [ffff0000cd37ec00, ffff0000cd37ee00) The buggy address belongs to the physical page: page:00000000e69c0203 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10d37c head:00000000e69c0203 order:2 compound_mapcount:0 subpages_mapcount:0 compound_pincount:0 flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000010200 ffff0000c0002600 fffffc0003e6bd00 dead000000000002 raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000cd37ee80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff0000cd37ef00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff0000cd37ef80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff0000cd37f000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff0000cd37f080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 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