/dev/loop1: 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 33deb067 P4D 33deb067 PUD 65d73067 PMD 0 
Oops: Oops: 0010 [#1] PREEMPT SMP KASAN NOPTI
CPU: 1 UID: 0 PID: 14555 Comm: syz.1.1056 Not tainted 6.12.0-rc2-syzkaller-00058-g75b607fab38d #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:ffffc9000490f9f8 EFLAGS: 00010283
RAX: ffffffff81cdd19c RBX: 0000000000000000 RCX: 0000000000040000
RDX: ffffc90017f56000 RSI: ffffea00013d4f00 RDI: 0000000000000000
RBP: ffffc9000490fab0 R08: ffffffff81cdd166 R09: 1ffffd400027a9e0
R10: dffffc0000000000 R11: 0000000000000000 R12: 1ffffd400027a9e0
R13: ffffea00013d4f00 R14: ffffc9000490fa40 R15: 1ffffd400027a9e1
FS:  00007fe98dfff6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 0000000069d36000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 filemap_read_folio+0x14d/0x630 mm/filemap.c:2367
 do_read_cache_folio+0x3f5/0x850 mm/filemap.c:3825
 read_mapping_folio include/linux/pagemap.h:1011 [inline]
 erofs_bread+0x499/0xd40 fs/erofs/data.c:41
 erofs_read_superblock fs/erofs/super.c:277 [inline]
 erofs_fc_fill_super+0x345/0x1770 fs/erofs/super.c:621
 vfs_get_super fs/super.c:1280 [inline]
 get_tree_nodev+0xb9/0x140 fs/super.c:1299
 vfs_get_tree+0x92/0x2b0 fs/super.c:1800
 do_new_mount+0x2be/0xb40 fs/namespace.c:3507
 do_mount fs/namespace.c:3847 [inline]
 __do_sys_mount fs/namespace.c:4055 [inline]
 __se_sys_mount+0x2d6/0x3c0 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: 0033:0x7fe98e57dff9
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:00007fe98dfff038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fe98e736130 RCX: 00007fe98e57dff9
RDX: 0000000020000000 RSI: 0000000020000240 RDI: 0000000020000080
RBP: 00007fe98e5f0296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fe98e736130 R15: 00007ffda2b60298
 </TASK>
Modules linked in:
CR2: 0000000000000000
---[ end trace 0000000000000000 ]---
RIP: 0010:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 0018:ffffc9000490f9f8 EFLAGS: 00010283
RAX: ffffffff81cdd19c RBX: 0000000000000000 RCX: 0000000000040000
RDX: ffffc90017f56000 RSI: ffffea00013d4f00 RDI: 0000000000000000
RBP: ffffc9000490fab0 R08: ffffffff81cdd166 R09: 1ffffd400027a9e0
R10: dffffc0000000000 R11: 0000000000000000 R12: 1ffffd400027a9e0
R13: ffffea00013d4f00 R14: ffffc9000490fa40 R15: 1ffffd400027a9e1
FS:  00007fe98dfff6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 0000000069d36000 CR4: 0000000000350ef0