bcachefs (loop2): alloc_read...
Unable to handle kernel paging request at virtual address dfff800000000013
KASAN: null-ptr-deref in range [0x0000000000000098-0x000000000000009f]
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
[dfff800000000013] address between user and kernel address ranges
Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 UID: 0 PID: 8335 Comm: syz.2.299 Not tainted 6.13.0-rc7-syzkaller-g1950a0af2d55 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : btree_path_lock_root fs/bcachefs/btree_iter.c:732 [inline]
pc : bch2_btree_path_traverse_one+0x738/0x2b30 fs/bcachefs/btree_iter.c:1183
lr : btree_path_lock_root fs/bcachefs/btree_iter.c:728 [inline]
lr : bch2_btree_path_traverse_one+0x714/0x2b30 fs/bcachefs/btree_iter.c:1183
sp : ffff80009dbd64c0
x29: ffff80009dbd67a0 x28: ffff0000e6681158 x27: ffff0000fab58268
x26: 0000000000001104 x25: 1fffe0001ccd022b x24: 0000000000000000
x23: ffff80009dbd6620 x22: dfff800000000000 x21: ffff0000e6680000
x20: 0000000000000098 x19: 0000000000000000 x18: ffff80009dbd69e0
x17: ffff80008f99d000 x16: ffff80008b60aec8 x15: 0000000000000005
x14: 0000000000000002 x13: 0000000000000003 x12: ffff0000cb5ebc80
x11: 0000000000080000 x10: 0000000000ff0100 x9 : 0000000000000002
x8 : 0000000000000013 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff8000828e99e0
x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 btree_path_lock_root fs/bcachefs/btree_iter.c:732 [inline] (P)
 bch2_btree_path_traverse_one+0x738/0x2b30 fs/bcachefs/btree_iter.c:1183 (P)
 bch2_btree_path_traverse fs/bcachefs/btree_iter.h:247 [inline]
 __bch2_btree_iter_peek fs/bcachefs/btree_iter.c:2210 [inline]
 bch2_btree_iter_peek_upto+0xafc/0x54f8 fs/bcachefs/btree_iter.c:2310
 bch2_btree_iter_peek_upto_type fs/bcachefs/btree_iter.h:685 [inline]
 bch2_alloc_read+0xbf0/0x1a60 fs/bcachefs/alloc_background.c:630
 bch2_run_recovery_pass+0xe4/0x1d4 fs/bcachefs/recovery_passes.c:191
 bch2_run_recovery_passes+0x30c/0x73c fs/bcachefs/recovery_passes.c:244
 bch2_fs_recovery+0x32d8/0x55dc fs/bcachefs/recovery.c:861
 bch2_fs_start+0x30c/0x53c fs/bcachefs/super.c:1037
 bch2_fs_get_tree+0x938/0x1030 fs/bcachefs/fs.c:2170
 vfs_get_tree+0x90/0x28c fs/super.c:1814
 do_new_mount+0x278/0x900 fs/namespace.c:3511
 path_mount+0x590/0xe04 fs/namespace.c:3838
 do_mount fs/namespace.c:3851 [inline]
 __do_sys_mount fs/namespace.c:4061 [inline]
 __se_sys_mount fs/namespace.c:4038 [inline]
 __arm64_sys_mount+0x4d4/0x5ac fs/namespace.c:4038
 __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:744
 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600
Code: 97896fc4 f9400398 91026314 d343fe88 (38f66908) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	97896fc4 	bl	0xfffffffffe25bf10
   4:	f9400398 	ldr	x24, [x28]
   8:	91026314 	add	x20, x24, #0x98
   c:	d343fe88 	lsr	x8, x20, #3
* 10:	38f66908 	ldrsb	w8, [x8, x22] <-- trapping instruction