F2FS-fs (loop0): Magic Mismatch, valid(0xf2f52010) - read(0x0)
F2FS-fs (loop0): Can't find valid F2FS filesystem in 2th superblock
F2FS-fs (loop0): invalid crc value
F2FS-fs (loop0): Cannot turn on journaled quota: error -2
==================================================================
BUG: KASAN: use-after-free in f2fs_evict_inode+0xdad/0x1070 fs/f2fs/inode.c:544
Read of size 4 at addr ffff888095fc7470 by task syz-executor201/7993
CPU: 0 PID: 7993 Comm: syz-executor201 Not tainted 4.14.281-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x1b2/0x281 lib/dump_stack.c:58
print_address_description.cold+0x54/0x1d3 mm/kasan/report.c:252
kasan_report_error.cold+0x8a/0x191 mm/kasan/report.c:351
kasan_report mm/kasan/report.c:409 [inline]
__asan_report_load4_noabort+0x68/0x70 mm/kasan/report.c:429
f2fs_evict_inode+0xdad/0x1070 fs/f2fs/inode.c:544
evict+0x2c8/0x700 fs/inode.c:555
iput_final fs/inode.c:1524 [inline]
iput+0x458/0x7e0 fs/inode.c:1551
dentry_unlink_inode+0x25c/0x310 fs/dcache.c:387
__dentry_kill+0x320/0x550 fs/dcache.c:591
shrink_dentry_list+0x2c2/0xac0 fs/dcache.c:1069
shrink_dcache_sb+0x105/0x1b0 fs/dcache.c:1191
f2fs_fill_super+0x127f/0x56a0 fs/f2fs/super.c:2767
mount_bdev+0x2b3/0x360 fs/super.c:1134
mount_fs+0x92/0x2a0 fs/super.c:1237
vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046
vfs_kern_mount fs/namespace.c:1036 [inline]
do_new_mount fs/namespace.c:2572 [inline]
do_mount+0xe65/0x2a30 fs/namespace.c:2905
SYSC_mount fs/namespace.c:3121 [inline]
SyS_mount+0xa8/0x120 fs/namespace.c:3098
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7fb02ca2c2ea
RSP: 002b:00007fb02c9d8168 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fb02c9d81c0 RCX: 00007fb02ca2c2ea
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fb02c9d8180
RBP: 0000000000000008 R08: 00007fb02c9d81c0 R09: 00007fb02c9d86b8
R10: 0000000000000000 R11: 0000000000000286 R12: 00007fb02c9d8180
R13: 00000000200002c0 R14: 0000000000000004 R15: 0000000000000005
Allocated by task 7993:
save_stack mm/kasan/kasan.c:447 [inline]
set_track mm/kasan/kasan.c:459 [inline]
kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:551
kmem_cache_alloc_trace+0x131/0x3d0 mm/slab.c:3618
kmalloc include/linux/slab.h:488 [inline]
kzalloc include/linux/slab.h:661 [inline]
f2fs_fill_super+0xef/0x56a0 fs/f2fs/super.c:2407
mount_bdev+0x2b3/0x360 fs/super.c:1134
mount_fs+0x92/0x2a0 fs/super.c:1237
vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046
vfs_kern_mount fs/namespace.c:1036 [inline]
do_new_mount fs/namespace.c:2572 [inline]
do_mount+0xe65/0x2a30 fs/namespace.c:2905
SYSC_mount fs/namespace.c:3121 [inline]
SyS_mount+0xa8/0x120 fs/namespace.c:3098
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
Freed by task 7993:
save_stack mm/kasan/kasan.c:447 [inline]
set_track mm/kasan/kasan.c:459 [inline]
kasan_slab_free+0xc3/0x1a0 mm/kasan/kasan.c:524
__cache_free mm/slab.c:3496 [inline]
kfree+0xc9/0x250 mm/slab.c:3815
f2fs_fill_super+0x1263/0x56a0 fs/f2fs/super.c:2762
mount_bdev+0x2b3/0x360 fs/super.c:1134
mount_fs+0x92/0x2a0 fs/super.c:1237
vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046
vfs_kern_mount fs/namespace.c:1036 [inline]
do_new_mount fs/namespace.c:2572 [inline]
do_mount+0xe65/0x2a30 fs/namespace.c:2905
SYSC_mount fs/namespace.c:3121 [inline]
SyS_mount+0xa8/0x120 fs/namespace.c:3098
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
The buggy address belongs to the object at ffff888095fc6b40
which belongs to the cache kmalloc-4096 of size 4096
The buggy address is located 2352 bytes inside of
4096-byte region [ffff888095fc6b40, ffff888095fc7b40)
The buggy address belongs to the page:
page:ffffea000257f180 count:1 mapcount:0 mapping:ffff888095fc6b40 index:0x0 compound_mapcount: 0
flags: 0xfff00000008100(slab|head)
raw: 00fff00000008100 ffff888095fc6b40 0000000000000000 0000000100000001
raw: ffffea0002cc7420 ffffea000257f120 ffff88813fe74dc0 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff888095fc7300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888095fc7380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888095fc7400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888095fc7480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888095fc7500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================