RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f2e2b5ad000
RBP: 00007f2e2b5ad040 R08: 00007f2e2b5ad040 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000
R13: 0000000020000100 R14: 00007f2e2b5ad000 R15: 0000000020000180
------------[ cut here ]------------
kernel BUG at fs/inode.c:1571!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 27762 Comm: syz-executor.0 Not tainted 4.19.183-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:iput+0x727/0x860 fs/inode.c:1571
erofs: read_super, device -> /dev/loop2
Code: b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 84 18 fd ff ff 48 8b 3c 24 e8 73 dc ee ff e9 0a fd ff ff e8 c9 1a b9 ff <0f> 0b e8 c2 1a b9 ff 48 89 ef e8 1a f7 ff ff 4c 89 f7 e8 f2 66 6d
erofs: options -> 
RSP: 0018:ffff88804addfa80 EFLAGS: 00010246
RAX: 0000000000040000 RBX: 0000000000000040 RCX: ffffc90006ef3000
RDX: 0000000000040000 RSI: ffffffff81a94297 RDI: 0000000000000007
RBP: ffff8880460f2a58 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000007 R11: 0000000000000000 R12: ffff8880abfbd280
R13: ffff8880460f2a58 R14: 0000000000000000 R15: 00000000fffffff4
FS:  00007f2e2b5ad700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000003378848 CR3: 000000004917c000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
erofs: root inode @ nid 36
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
erofs: mounted on /dev/loop2 with opts: .
Call Trace:
 erofs_read_super drivers/staging/erofs/super.c:439 [inline]
 erofs_fill_super+0x1205/0x12cc drivers/staging/erofs/super.c:499
 mount_bdev+0x2fc/0x3b0 fs/super.c:1158
 erofs_mount+0x8c/0xc0 drivers/staging/erofs/super.c:512
 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:2469 [inline]
 do_mount+0x113c/0x2f10 fs/namespace.c:2799
 ksys_mount+0xcf/0x130 fs/namespace.c:3015
 __do_sys_mount fs/namespace.c:3029 [inline]
 __se_sys_mount fs/namespace.c:3026 [inline]
 __x64_sys_mount+0xba/0x150 fs/namespace.c:3026
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x46797a
Code: 48 c7 c2 bc 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2e2b5acfa8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 000000000046797a
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f2e2b5ad000
RBP: 00007f2e2b5ad040 R08: 00007f2e2b5ad040 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000
R13: 0000000020000100 R14: 00007f2e2b5ad000 R15: 0000000020000180
Modules linked in:
erofs: read_super, device -> /dev/loop5
---[ end trace 6435e5f8aab46f94 ]---
erofs: options -> 
RIP: 0010:iput+0x727/0x860 fs/inode.c:1571
Code: b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 84 18 fd ff ff 48 8b 3c 24 e8 73 dc ee ff e9 0a fd ff ff e8 c9 1a b9 ff <0f> 0b e8 c2 1a b9 ff 48 89 ef e8 1a f7 ff ff 4c 89 f7 e8 f2 66 6d
RSP: 0018:ffff88804addfa80 EFLAGS: 00010246
erofs: read_super, device -> /dev/loop4
RAX: 0000000000040000 RBX: 0000000000000040 RCX: ffffc90006ef3000
RDX: 0000000000040000 RSI: ffffffff81a94297 RDI: 0000000000000007
RBP: ffff8880460f2a58 R08: 0000000000000000 R09: 0000000000000000
erofs: options -> 
R10: 0000000000000007 R11: 0000000000000000 R12: ffff8880abfbd280
erofs: unmounted for /dev/loop3
R13: ffff8880460f2a58 R14: 0000000000000000 R15: 00000000fffffff4
erofs: root inode @ nid 0
FS:  00007f2e2b5ad700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
erofs: unmounted for /dev/loop2
erofs: cannot read erofs superblock
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000568000 CR3: 000000004917c000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400