UDF-fs: error (device loop3): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) ================================================================== BUG: KASAN: slab-out-of-bounds in udf_write_aext+0x4c0/0x668 fs/udf/inode.c:2110 Write of size 4 at addr ffff0000e5c783f0 by task syz.3.40/4265 CPU: 0 PID: 4265 Comm: syz.3.40 Not tainted 5.15.168-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call trace: dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 print_address_description+0x7c/0x3f0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:434 [inline] kasan_report+0x174/0x1e4 mm/kasan/report.c:451 __asan_report_store_n_noabort+0x40/0x4c mm/kasan/report_generic.c:325 udf_write_aext+0x4c0/0x668 fs/udf/inode.c:2110 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:4065 do_mkdirat+0x20c/0x610 fs/namei.c:4090 __do_sys_mkdirat fs/namei.c:4105 [inline] __se_sys_mkdirat fs/namei.c:4103 [inline] __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4103 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Allocated by task 4025: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] ____kasan_kmalloc+0xbc/0xfc mm/kasan/common.c:513 __kasan_kmalloc+0x10/0x1c mm/kasan/common.c:522 kasan_kmalloc include/linux/kasan.h:264 [inline] __kmalloc_node_track_caller+0x234/0x448 mm/slub.c:4963 kmalloc_reserve+0xe8/0x270 net/core/skbuff.c:356 pskb_expand_head+0xf8/0x1064 net/core/skbuff.c:1709 netlink_trim+0x160/0x204 net/netlink/af_netlink.c:1308 netlink_broadcast_filtered+0x78/0xdf0 net/netlink/af_netlink.c:1513 netlink_broadcast net/netlink/af_netlink.c:1558 [inline] nlmsg_multicast include/net/netlink.h:1033 [inline] nlmsg_notify+0x100/0x1e8 net/netlink/af_netlink.c:2547 rtnl_notify+0xa0/0xd8 net/core/rtnetlink.c:759 rtmsg_fib+0x2fc/0x500 net/ipv4/fib_semantics.c:540 fib_table_insert+0xbe4/0x1550 net/ipv4/fib_trie.c:1398 fib_magic net/ipv4/fib_frontend.c:1092 [inline] fib_add_ifaddr+0x950/0x122c net/ipv4/fib_frontend.c:1129 fib_netdev_event+0x564/0x6d4 net/ipv4/fib_frontend.c:1474 notifier_call_chain kernel/notifier.c:83 [inline] raw_notifier_call_chain+0xd4/0x164 kernel/notifier.c:391 __dev_notify_flags+0x2ac/0x534 dev_change_flags+0xc8/0x154 net/core/dev.c:8893 do_setlink+0xac4/0x3134 net/core/rtnetlink.c:2776 __rtnl_newlink net/core/rtnetlink.c:3447 [inline] rtnl_newlink+0x1294/0x1acc net/core/rtnetlink.c:3569 rtnetlink_rcv_msg+0xa74/0xdac net/core/rtnetlink.c:5647 netlink_rcv_skb+0x20c/0x3b8 net/netlink/af_netlink.c:2504 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:5665 netlink_unicast_kernel net/netlink/af_netlink.c:1326 [inline] netlink_unicast+0x664/0x938 net/netlink/af_netlink.c:1352 netlink_sendmsg+0x844/0xb38 net/netlink/af_netlink.c:1920 sock_sendmsg_nosec net/socket.c:704 [inline] __sock_sendmsg net/socket.c:716 [inline] __sys_sendto+0x388/0x4d0 net/socket.c:2063 __do_sys_sendto net/socket.c:2075 [inline] __se_sys_sendto net/socket.c:2071 [inline] __arm64_sys_sendto+0xd8/0xf8 net/socket.c:2071 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 The buggy address belongs to the object at ffff0000e5c78000 which belongs to the cache kmalloc-512 of size 512 The buggy address is located 496 bytes to the right of 512-byte region [ffff0000e5c78000, ffff0000e5c78200) The buggy address belongs to the page: page:00000000b1973f66 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff0000e5c7bc00 pfn:0x125c78 head:00000000b1973f66 order:2 compound_mapcount:0 compound_pincount:0 flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000010200 fffffc0003971d00 0000000500000005 ffff0000c0002600 raw: ffff0000e5c7bc00 000000008010000e 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000e5c78280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff0000e5c78300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff0000e5c78380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff0000e5c78400: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff0000e5c78480: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================