./file1: Can't lookup blockdev
BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor instruction fetch in kernel mode
#PF: error_code(0x0010) - not-present page
PGD 8000000023ba6067 P4D 8000000023ba6067 PUD 7debc067 PMD 0 
Oops: Oops: 0010 [#1] PREEMPT SMP KASAN PTI
CPU: 0 UID: 0 PID: 6033 Comm: syz.3.135 Not tainted 6.11.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 0018:ffffc9000b2ff9f8 EFLAGS: 00010246
RAX: 0000000000000001 RBX: 00fff00000000001 RCX: ffffffff81af2ac7
RDX: 0000000000000001 RSI: ffffea0001723ec0 RDI: 0000000000000000
RBP: ffffc9000b2ffac0 R08: ffffea0001723ec7 R09: 1ffffd40002e47d8
R10: dffffc0000000000 R11: 0000000000000000 R12: 1ffffd40002e47d8
R13: 1ffffd40002e47d9 R14: ffffea0001723ec0 R15: ffffea0001723ec8
FS:  00007ff11b1346c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 000000002d304000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 filemap_read_folio+0x155/0x540 mm/filemap.c:2355
 do_read_cache_folio+0x104/0x5a0 mm/filemap.c:3796
 read_mapping_folio include/linux/pagemap.h:915 [inline]
 erofs_bread+0x2ff/0x8b0 fs/erofs/data.c:41
 erofs_read_superblock fs/erofs/super.c:277 [inline]
 erofs_fc_fill_super+0x2a2/0x1550 fs/erofs/super.c:621
 vfs_get_super fs/super.c:1280 [inline]
 get_tree_nodev+0xa3/0x110 fs/super.c:1299
 vfs_get_tree+0x82/0x250 fs/super.c:1800
 do_new_mount+0x21e/0x9b0 fs/namespace.c:3507
 do_mount fs/namespace.c:3847 [inline]
 __do_sys_mount fs/namespace.c:4055 [inline]
 __se_sys_mount+0x22f/0x2c0 fs/namespace.c:4032
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff11a37e719
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ff11b134038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ff11a535f80 RCX: 00007ff11a37e719
RDX: 00000000200005c0 RSI: 0000000020000580 RDI: 0000000020000540
RBP: 00007ff11a3f139e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000200000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007ff11a535f80 R15: 00007fff03844d68
 </TASK>
Modules linked in:
CR2: 0000000000000000
---[ end trace 0000000000000000 ]---
RIP: 0010:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 0018:ffffc9000b2ff9f8 EFLAGS: 00010246
RAX: 0000000000000001 RBX: 00fff00000000001 RCX: ffffffff81af2ac7
RDX: 0000000000000001 RSI: ffffea0001723ec0 RDI: 0000000000000000
RBP: ffffc9000b2ffac0 R08: ffffea0001723ec7 R09: 1ffffd40002e47d8
R10: dffffc0000000000 R11: 0000000000000000 R12: 1ffffd40002e47d8
R13: 1ffffd40002e47d9 R14: ffffea0001723ec0 R15: ffffea0001723ec8
FS:  00007ff11b1346c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 000000002d304000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400