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:2088 Write of size 4 at addr ffff000130842bf0 by task syz-executor.4/12279 CPU: 1 PID: 12279 Comm: syz-executor.4 Not tainted 6.2.0-syzkaller-18302-g596b6b709632 #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+0x174/0x4c0 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 5985: 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+0xd8/0x1c4 mm/slab_common.c:981 kmalloc include/linux/slab.h:584 [inline] kzalloc include/linux/slab.h:720 [inline] new_dir fs/proc/proc_sysctl.c:971 [inline] get_subdir fs/proc/proc_sysctl.c:1015 [inline] __register_sysctl_table+0x8b4/0xf70 fs/proc/proc_sysctl.c:1366 register_net_sysctl+0x310/0x35c net/sysctl_net.c:169 __devinet_sysctl_register+0x170/0x238 net/ipv4/devinet.c:2587 devinet_sysctl_register+0x130/0x1a8 net/ipv4/devinet.c:2627 inetdev_init+0x240/0x480 net/ipv4/devinet.c:286 inetdev_event+0x244/0x11e4 net/ipv4/devinet.c:1535 notifier_call_chain kernel/notifier.c:87 [inline] raw_notifier_call_chain+0xd4/0x164 kernel/notifier.c:455 call_netdevice_notifiers_info net/core/dev.c:1936 [inline] call_netdevice_notifiers_extack net/core/dev.c:1974 [inline] call_netdevice_notifiers+0x138/0x1b8 net/core/dev.c:1988 register_netdevice+0xea8/0x1270 net/core/dev.c:10070 veth_newlink+0x524/0xb74 drivers/net/veth.c:1765 rtnl_newlink_create net/core/rtnetlink.c:3407 [inline] __rtnl_newlink net/core/rtnetlink.c:3624 [inline] rtnl_newlink+0x1174/0x1b1c net/core/rtnetlink.c:3637 rtnetlink_rcv_msg+0x6ec/0xc8c net/core/rtnetlink.c:6141 netlink_rcv_skb+0x214/0x3c4 net/netlink/af_netlink.c:2574 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6159 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline] netlink_unicast+0x660/0x8d4 net/netlink/af_netlink.c:1365 netlink_sendmsg+0x800/0xae0 net/netlink/af_netlink.c:1942 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] __sys_sendto+0x3b4/0x504 net/socket.c:2120 __do_sys_sendto net/socket.c:2132 [inline] __se_sys_sendto net/socket.c:2128 [inline] __arm64_sys_sendto+0xd8/0xf8 net/socket.c:2128 __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 ffff000130842800 which belongs to the cache kmalloc-512 of size 512 The buggy address is located 496 bytes to the right of 512-byte region [ffff000130842800, ffff000130842a00) The buggy address belongs to the physical page: page:00000000197b9634 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x170840 head:00000000197b9634 order:2 compound_mapcount:0 subpages_mapcount:0 compound_pincount:0 anon flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000010200 ffff0000c0002600 0000000000000000 dead000000000001 raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff000130842a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff000130842b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff000130842b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff000130842c00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff000130842c80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================