erofs: mounted on /dev/loop2 with opts: .
attempt to access beyond end of device
loop2: rw=4096, want=104, limit=47
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 28853 Comm: syz-executor.2 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:vle_compressed_index_clusterofs drivers/staging/erofs/unzip_vle.c:1470 [inline]
RIP: 0010:z_erofs_map_blocks_iter+0x632/0x1aa0 drivers/staging/erofs/unzip_vle.c:1624
Code: 0f b6 8c 24 9c 00 00 00 48 ba 00 00 00 00 00 fc ff df 48 d3 e3 44 01 f3 81 e3 ff 0f 00 00 48 03 5c 24 30 48 89 d8 48 c1 e8 03 <0f> b6 0c 10 48 8d 43 01 48 89 c6 48 c1 ee 03 0f b6 14 16 48 89 de
RSP: 0018:ffff88809a04f1e0 EFLAGS: 00010206
RAX: 0000a10fffffff3a RBX: 0005087ffffff9d0 RCX: 0000000000000005
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffff8880a33075dc
RBP: fffffffffffffffb R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffff8880a3307540
R13: 0000000000000000 R14: 000000000000c550 R15: ffff88809adc4500
FS:  00007f26adcab700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30022000 CR3: 00000000a995e000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 erofs_map_blocks_iter+0x6d/0x3b0 drivers/staging/erofs/data.c:168
 z_erofs_do_read_page+0x670/0x2820 drivers/staging/erofs/unzip_vle.c:644
 z_erofs_vle_normalaccess_readpage+0x136/0x460 drivers/staging/erofs/unzip_vle.c:1353
 do_read_cache_page+0x533/0x1170 mm/filemap.c:2828
 read_mapping_page include/linux/pagemap.h:402 [inline]
 find_target_block_classic drivers/staging/erofs/namei.c:112 [inline]
 erofs_namei+0x1ab/0x1740 drivers/staging/erofs/namei.c:189
 erofs_lookup+0x143/0x500 drivers/staging/erofs/namei.c:232
 __lookup_slow+0x246/0x4a0 fs/namei.c:1672
 lookup_slow fs/namei.c:1689 [inline]
 walk_component+0x7ac/0xda0 fs/namei.c:1811
 link_path_walk.part.0+0x901/0x1230 fs/namei.c:2142
 link_path_walk fs/namei.c:2073 [inline]
 path_parentat+0x51/0x140 fs/namei.c:2367
 filename_parentat+0x198/0x590 fs/namei.c:2389
 filename_create+0x9e/0x490 fs/namei.c:3621
 user_path_create fs/namei.c:3696 [inline]
 do_mknodat.part.0+0xcd/0x480 fs/namei.c:3757
 do_mknodat fs/namei.c:3789 [inline]
 __do_sys_mknodat fs/namei.c:3792 [inline]
 __se_sys_mknodat fs/namei.c:3789 [inline]
 __x64_sys_mknodat+0x116/0x160 fs/namei.c:3789
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f26af336059
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007f26adcab168 EFLAGS: 00000246 ORIG_RAX: 0000000000000103
RAX: ffffffffffffffda RBX: 00007f26af448f60 RCX: 00007f26af336059
RDX: 0000000000000000 RSI: 0000000020000540 RDI: 0000000000000006
RBP: 00007f26af39008d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000705 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe30b9f4af R14: 00007f26adcab300 R15: 0000000000022000
Modules linked in:
---[ end trace 78e6a75632762bf2 ]---
RIP: 0010:vle_compressed_index_clusterofs drivers/staging/erofs/unzip_vle.c:1470 [inline]
RIP: 0010:z_erofs_map_blocks_iter+0x632/0x1aa0 drivers/staging/erofs/unzip_vle.c:1624
Code: 0f b6 8c 24 9c 00 00 00 48 ba 00 00 00 00 00 fc ff df 48 d3 e3 44 01 f3 81 e3 ff 0f 00 00 48 03 5c 24 30 48 89 d8 48 c1 e8 03 <0f> b6 0c 10 48 8d 43 01 48 89 c6 48 c1 ee 03 0f b6 14 16 48 89 de
RSP: 0018:ffff88809a04f1e0 EFLAGS: 00010206
RAX: 0000a10fffffff3a RBX: 0005087ffffff9d0 RCX: 0000000000000005
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffff8880a33075dc
RBP: fffffffffffffffb R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffff8880a3307540
R13: 0000000000000000 R14: 000000000000c550 R15: ffff88809adc4500
FS:  00007f26adcab700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30022000 CR3: 00000000a995e000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	0f b6 8c 24 9c 00 00 	movzbl 0x9c(%rsp),%ecx
   7:	00
   8:	48 ba 00 00 00 00 00 	movabs $0xdffffc0000000000,%rdx
   f:	fc ff df
  12:	48 d3 e3             	shl    %cl,%rbx
  15:	44 01 f3             	add    %r14d,%ebx
  18:	81 e3 ff 0f 00 00    	and    $0xfff,%ebx
  1e:	48 03 5c 24 30       	add    0x30(%rsp),%rbx
  23:	48 89 d8             	mov    %rbx,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	0f b6 0c 10          	movzbl (%rax,%rdx,1),%ecx <-- trapping instruction
  2e:	48 8d 43 01          	lea    0x1(%rbx),%rax
  32:	48 89 c6             	mov    %rax,%rsi
  35:	48 c1 ee 03          	shr    $0x3,%rsi
  39:	0f b6 14 16          	movzbl (%rsi,%rdx,1),%edx
  3d:	48 89 de             	mov    %rbx,%rsi