================================================================== BUG: KASAN: slab-out-of-bounds in ntfs_filldir fs/ntfs/dir.c:1021 [inline] BUG: KASAN: slab-out-of-bounds in ntfs_readdir+0xb00/0x2be8 fs/ntfs/dir.c:1200 Read of size 1 at addr ffff0000cdf5f7f1 by task syz-executor.1/20388 CPU: 0 PID: 20388 Comm: syz-executor.1 Not tainted 6.7.0-rc6-syzkaller-gaafe7ad77b91 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 Call trace: dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:291 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:298 __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:364 [inline] print_report+0x174/0x514 mm/kasan/report.c:475 kasan_report+0xd8/0x138 mm/kasan/report.c:588 __asan_report_load1_noabort+0x20/0x2c mm/kasan/report_generic.c:378 ntfs_filldir fs/ntfs/dir.c:1021 [inline] ntfs_readdir+0xb00/0x2be8 fs/ntfs/dir.c:1200 wrap_directory_iterator+0xa8/0xf4 fs/readdir.c:67 shared_ntfs_readdir+0x30/0x40 fs/ntfs/dir.c:1528 iterate_dir+0x184/0x440 fs/readdir.c:106 __do_sys_getdents64 fs/readdir.c:405 [inline] __se_sys_getdents64 fs/readdir.c:390 [inline] __arm64_sys_getdents64+0x1c4/0x4a0 fs/readdir.c:390 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595 Allocated by task 20388: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4c/0x7c mm/kasan/common.c:52 kasan_save_alloc_info+0x24/0x30 mm/kasan/generic.c:511 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0xac/0xc4 mm/kasan/common.c:383 kasan_kmalloc include/linux/kasan.h:198 [inline] __do_kmalloc_node mm/slab_common.c:1007 [inline] __kmalloc+0xcc/0x1b8 mm/slab_common.c:1020 kmalloc include/linux/slab.h:604 [inline] ntfs_readdir+0x65c/0x2be8 fs/ntfs/dir.c:1162 wrap_directory_iterator+0xa8/0xf4 fs/readdir.c:67 shared_ntfs_readdir+0x30/0x40 fs/ntfs/dir.c:1528 iterate_dir+0x184/0x440 fs/readdir.c:106 __do_sys_getdents64 fs/readdir.c:405 [inline] __se_sys_getdents64 fs/readdir.c:390 [inline] __arm64_sys_getdents64+0x1c4/0x4a0 fs/readdir.c:390 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595 Last potentially related work creation: kasan_save_stack+0x40/0x6c mm/kasan/common.c:45 __kasan_record_aux_stack+0xcc/0xe8 mm/kasan/generic.c:492 kasan_record_aux_stack_noalloc+0x14/0x20 mm/kasan/generic.c:502 __call_rcu_common kernel/rcu/tree.c:2681 [inline] call_rcu+0x104/0xaf4 kernel/rcu/tree.c:2795 tnode_free net/ipv4/fib_trie.c:496 [inline] replace+0x218/0x52c net/ipv4/fib_trie.c:522 inflate net/ipv4/fib_trie.c:624 [inline] resize+0xe74/0x24fc net/ipv4/fib_trie.c:869 trie_rebalance net/ipv4/fib_trie.c:1106 [inline] fib_insert_node net/ipv4/fib_trie.c:1150 [inline] fib_insert_alias+0xb00/0xef0 net/ipv4/fib_trie.c:1164 fib_table_insert+0x624/0x1574 net/ipv4/fib_trie.c:1378 fib_magic+0x300/0x4b8 net/ipv4/fib_frontend.c:1104 fib_add_ifaddr+0x118/0x4ec net/ipv4/fib_frontend.c:1126 fib_inetaddr_event+0x12c/0x200 net/ipv4/fib_frontend.c:1440 notifier_call_chain+0x1a4/0x510 kernel/notifier.c:93 blocking_notifier_call_chain+0x70/0xa0 kernel/notifier.c:388 __inet_insert_ifa+0x8b0/0xac8 net/ipv4/devinet.c:556 inet_rtm_newaddr+0xfa4/0x1950 net/ipv4/devinet.c:976 rtnetlink_rcv_msg+0x748/0xdbc net/core/rtnetlink.c:6558 netlink_rcv_skb+0x214/0x3c4 net/netlink/af_netlink.c:2545 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6576 netlink_unicast_kernel net/netlink/af_netlink.c:1342 [inline] netlink_unicast+0x65c/0x898 net/netlink/af_netlink.c:1368 netlink_sendmsg+0x83c/0xb20 net/netlink/af_netlink.c:1910 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] __sys_sendto+0x3bc/0x540 net/socket.c:2190 __do_sys_sendto net/socket.c:2202 [inline] __se_sys_sendto net/socket.c:2198 [inline] __arm64_sys_sendto+0xd8/0xf8 net/socket.c:2198 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595 The buggy address belongs to the object at ffff0000cdf5f780 which belongs to the cache kmalloc-64 of size 64 The buggy address is located 57 bytes to the right of allocated 56-byte region [ffff0000cdf5f780, ffff0000cdf5f7b8) The buggy address belongs to the physical page: page:00000000cfc59d8d refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10df5f flags: 0x5ffc00000000800(slab|node=0|zone=2|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 05ffc00000000800 ffff0000c0001640 dead000000000100 dead000000000122 raw: 0000000000000000 0000000080200020 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000cdf5f680: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff0000cdf5f700: 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc >ffff0000cdf5f780: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc ^ ffff0000cdf5f800: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc ffff0000cdf5f880: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc 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