bcachefs (loop4): starting version 1.7: mi_btree_bitmap opts=ro,errors=continue,metadata_checksum=none,data_checksum=none,erasure_code,usrquota,prjquota,norecovery,nojournal_transaction_names,read_only
superblock marked clean but clean section not present, fixing
Unable to handle kernel paging request at virtual address dfff800000000002
KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]
Mem abort info:
  ESR = 0x0000000096000005
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x05: level 1 translation fault
Data abort info:
  ISV = 0, ISS = 0x00000005, ISS2 = 0x00000000
  CM = 0, WnR = 0, TnD = 0, TagAccess = 0
  GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
[dfff800000000002] address between user and kernel address ranges
Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 UID: 0 PID: 6854 Comm: syz.4.69 Not tainted 6.11.0-rc7-syzkaller-g5f5673607153 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : bch2_fs_recovery+0x220/0x5514 fs/bcachefs/recovery.c:644
lr : bch2_fs_recovery+0x214/0x5514 fs/bcachefs/recovery.c:644
sp : ffff8000a3e571c0
x29: ffff8000a3e57590 x28: ffff0000ee900000 x27: ffff7000147cae54
x26: ffff8000a3e57330 x25: ffff8000a3e572a0 x24: dfff800000000000
x23: 0000000000000000 x22: 0000000000000010 x21: ffff0000ee9001cc
x20: 1ffff000147cae66 x19: ffff0000ee94b150 x18: 0000000000000008
x17: 0000000000000000 x16: ffff800080a87264 x15: 0000000000000001
x14: 1ffff000147cae10 x13: 0000000000000000 x12: 0000000000000000
x11: 0000000000040000 x10: 000000000003ffff x9 : ffff8000a78b1000
x8 : 0000000000000002 x7 : ffff8000800614a8 x6 : ffff8000800616a4
x5 : ffff0000d1957828 x4 : ffff8000a3e56c68 x3 : ffff80008b41d320
x2 : 0000000000000001 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 bch2_fs_recovery+0x220/0x5514 fs/bcachefs/recovery.c:644
 bch2_fs_start+0x30c/0x53c fs/bcachefs/super.c:1036
 bch2_fs_get_tree+0x938/0x1030 fs/bcachefs/fs.c:1946
 vfs_get_tree+0x90/0x28c fs/super.c:1800
 do_new_mount+0x278/0x900 fs/namespace.c:3472
 path_mount+0x590/0xe04 fs/namespace.c:3799
 do_mount fs/namespace.c:3812 [inline]
 __do_sys_mount fs/namespace.c:4020 [inline]
 __se_sys_mount fs/namespace.c:3997 [inline]
 __arm64_sys_mount+0x45c/0x5a8 fs/namespace.c:3997
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598
Code: 976e2422 910042f6 91073395 d343fec8 (38786908) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	976e2422 	bl	0xfffffffffdb89088
   4:	910042f6 	add	x22, x23, #0x10
   8:	91073395 	add	x21, x28, #0x1cc
   c:	d343fec8 	lsr	x8, x22, #3
* 10:	38786908 	ldrb	w8, [x8, x24] <-- trapping instruction