IPVS: ftp: loaded support on port[0] = 21
==================================================================
BUG: KASAN: slab-out-of-bounds in init_min_max_mtime fs/f2fs/segment.c:4161 [inline]
BUG: KASAN: slab-out-of-bounds in f2fs_build_segment_manager+0xa37a/0xad90 fs/f2fs/segment.c:4243
Read of size 8 at addr ffff888053ced238 by task syz-executor.0/915

CPU: 0 PID: 915 Comm: syz-executor.0 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2022
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 print_address_description.cold+0x54/0x219 mm/kasan/report.c:256
 kasan_report_error.cold+0x8a/0x1b9 mm/kasan/report.c:354
 kasan_report mm/kasan/report.c:412 [inline]
 __asan_report_load8_noabort+0x88/0x90 mm/kasan/report.c:433
 init_min_max_mtime fs/f2fs/segment.c:4161 [inline]
 f2fs_build_segment_manager+0xa37a/0xad90 fs/f2fs/segment.c:4243
 f2fs_fill_super+0x31d9/0x7050 fs/f2fs/super.c:3016
 mount_bdev+0x2fc/0x3b0 fs/super.c:1158
 mount_fs+0xa3/0x310 fs/super.c:1261
 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961
 vfs_kern_mount fs/namespace.c:951 [inline]
 do_new_mount fs/namespace.c:2492 [inline]
 do_mount+0x115c/0x2f50 fs/namespace.c:2822
 ksys_mount+0xcf/0x130 fs/namespace.c:3038
 __do_sys_mount fs/namespace.c:3052 [inline]
 __se_sys_mount fs/namespace.c:3049 [inline]
 __x64_sys_mount+0xba/0x150 fs/namespace.c:3049
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7ffae9a1bb9a
Code: 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffae838df88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007ffae9a1bb9a
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffae838dfe0
RBP: 00007ffae838e020 R08: 00007ffae838e020 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000
R13: 0000000020000100 R14: 00007ffae838dfe0 R15: 0000000020000040

Allocated by task 915:
 __do_kmalloc_node mm/slab.c:3689 [inline]
 __kmalloc_node+0x4c/0x70 mm/slab.c:3696
 kmalloc_node include/linux/slab.h:557 [inline]
 kvmalloc_node+0x61/0xf0 mm/util.c:423
 kvmalloc include/linux/mm.h:577 [inline]
 f2fs_kvmalloc fs/f2fs/f2fs.h:2687 [inline]
 f2fs_kvzalloc fs/f2fs/f2fs.h:2693 [inline]
 build_sit_info fs/f2fs/segment.c:3768 [inline]
 f2fs_build_segment_manager+0xb96/0xad90 fs/f2fs/segment.c:4219
 f2fs_fill_super+0x31d9/0x7050 fs/f2fs/super.c:3016
 mount_bdev+0x2fc/0x3b0 fs/super.c:1158
 mount_fs+0xa3/0x310 fs/super.c:1261
 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961
 vfs_kern_mount fs/namespace.c:951 [inline]
 do_new_mount fs/namespace.c:2492 [inline]
 do_mount+0x115c/0x2f50 fs/namespace.c:2822
 ksys_mount+0xcf/0x130 fs/namespace.c:3038
 __do_sys_mount fs/namespace.c:3052 [inline]
 __se_sys_mount fs/namespace.c:3049 [inline]
 __x64_sys_mount+0xba/0x150 fs/namespace.c:3049
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Freed by task 23777:
 __cache_free mm/slab.c:3503 [inline]
 kfree+0xcc/0x210 mm/slab.c:3822
 sk_prot_free net/core/sock.c:1520 [inline]
 __sk_destruct+0x684/0x8a0 net/core/sock.c:1602
 sk_destruct net/core/sock.c:1617 [inline]
 __sk_free+0x165/0x3b0 net/core/sock.c:1628
 sk_free+0x3b/0x50 net/core/sock.c:1639
 sock_put include/net/sock.h:1713 [inline]
 x25_release+0x257/0x2e0 net/x25/af_x25.c:672
 __sock_release+0xcd/0x2a0 net/socket.c:599
 sock_close+0x15/0x20 net/socket.c:1214
 __fput+0x2ce/0x890 fs/file_table.c:278
 task_work_run+0x148/0x1c0 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:193 [inline]
 exit_to_usermode_loop+0x251/0x2a0 arch/x86/entry/common.c:167
 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:271 [inline]
 do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

The buggy address belongs to the object at ffff888053cecb80
 which belongs to the cache kmalloc-2048 of size 2048
The buggy address is located 1720 bytes inside of
 2048-byte region [ffff888053cecb80, ffff888053ced380)
The buggy address belongs to the page:
page:ffffea00014f3b00 count:1 mapcount:0 mapping:ffff88813bff0c40 index:0x0 compound_mapcount: 0
flags: 0xfff00000008100(slab|head)
raw: 00fff00000008100 ffffea0001610e08 ffffea000273f288 ffff88813bff0c40
raw: 0000000000000000 ffff888053cec300 0000000100000003 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff888053ced100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff888053ced180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff888053ced200: 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                                        ^
 ffff888053ced280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888053ced300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================