F2FS-fs (loop4): Magic Mismatch, valid(0xf2f52010) - read(0x0)
F2FS-fs (loop4): Can't find valid F2FS filesystem in 2th superblock
F2FS-fs (loop4): invalid crc value
F2FS-fs (loop4): Found nat_bits in checkpoint
------------[ cut here ]------------
kernel BUG at fs/f2fs/node.c:1031!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 19835 Comm: syz-executor.4 Not tainted 4.14.198-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8880a982c140 task.stack: ffff88808ec20000
RIP: 0010:remove_inode_page+0x578/0x610 fs/f2fs/node.c:1031
RSP: 0018:ffff88808ec27918 EFLAGS: 00010246
RAX: 0000000000040000 RBX: 1ffff11011d84f23 RCX: ffffc90009909000
RDX: 0000000000040000 RSI: ffffffff82b6da58 RDI: ffff88805449f8c0
RBP: ffff88805449f7f0 R08: 0000000000000000 R09: 0000000000000003
R10: 0000000000000000 R11: ffff8880a982c140 R12: 0000000000000000
R13: ffff88808ec27948 R14: 0000000000006000 R15: dffffc0000000000
FS:  00007fa4a380c700(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000768000 CR3: 00000000a7f07000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 f2fs_evict_inode+0xc2e/0x1070 fs/f2fs/inode.c:576
 evict+0x2c8/0x700 fs/inode.c:555
 iput_final fs/inode.c:1524 [inline]
 iput+0x458/0x7e0 fs/inode.c:1551
 f2fs_fill_super+0x4084/0x56a0 fs/f2fs/super.c:2629
 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:2549 [inline]
 do_mount+0xe53/0x2a00 fs/namespace.c:2879
 SYSC_mount fs/namespace.c:3095 [inline]
 SyS_mount+0xa8/0x120 fs/namespace.c:3072
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x460bca
RSP: 002b:00007fa4a380ba88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fa4a380bb20 RCX: 0000000000460bca
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fa4a380bae0
RBP: 00007fa4a380bae0 R08: 00007fa4a380bb20 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000
R13: 0000000020000100 R14: 0000000020000200 R15: 0000000020000040
Code: 0f 0b e8 dc bc a4 fe 49 8d 6d ff e9 0f fd ff ff e8 ce bc a4 fe 48 c7 c6 60 f6 db 86 48 89 ef e8 5f 0b c3 fe 0f 0b e8 b8 bc a4 fe <0f> 0b e8 f1 8f ce fe e9 f2 fa ff ff e8 e7 8f ce fe e9 d0 fc ff 
RIP: remove_inode_page+0x578/0x610 fs/f2fs/node.c:1031 RSP: ffff88808ec27918
---[ end trace 780d76f7b09ae826 ]---
print_req_error: I/O error, dev loop2, sector 0